1 | /* Compiler driver program that can handle many languages. |
---|---|
2 | Copyright (C) 1987-2025 Free Software Foundation, Inc. |
3 | |
4 | This file is part of GCC. |
5 | |
6 | GCC is free software; you can redistribute it and/or modify it under |
7 | the terms of the GNU General Public License as published by the Free |
8 | Software Foundation; either version 3, or (at your option) any later |
9 | version. |
10 | |
11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
14 | for more details. |
15 | |
16 | You should have received a copy of the GNU General Public License |
17 | along with GCC; see the file COPYING3. If not see |
18 | <http://www.gnu.org/licenses/>. */ |
19 | |
20 | /* This program is the user interface to the C compiler and possibly to |
21 | other compilers. It is used because compilation is a complicated procedure |
22 | which involves running several programs and passing temporary files between |
23 | them, forwarding the users switches to those programs selectively, |
24 | and deleting the temporary files at the end. |
25 | |
26 | CC recognizes how to compile each input file by suffixes in the file names. |
27 | Once it knows which kind of compilation to perform, the procedure for |
28 | compilation is specified by a string called a "spec". */ |
29 | |
30 | #define INCLUDE_STRING |
31 | #include "config.h" |
32 | #include "system.h" |
33 | #ifdef HOST_HAS_PERSONALITY_ADDR_NO_RANDOMIZE |
34 | #include <sys/personality.h> |
35 | #endif |
36 | #include "coretypes.h" |
37 | #include "multilib.h" /* before tm.h */ |
38 | #include "tm.h" |
39 | #include "xregex.h" |
40 | #include "obstack.h" |
41 | #include "intl.h" |
42 | #include "prefix.h" |
43 | #include "opt-suggestions.h" |
44 | #include "gcc.h" |
45 | #include "diagnostic.h" |
46 | #include "diagnostic-format.h" |
47 | #include "pretty-print-urlifier.h" |
48 | #include "flags.h" |
49 | #include "opts.h" |
50 | #include "filenames.h" |
51 | #include "spellcheck.h" |
52 | #include "opts-jobserver.h" |
53 | #include "common/common-target.h" |
54 | #include "gcc-urlifier.h" |
55 | #include "opts-diagnostic.h" |
56 | |
57 | #ifndef MATH_LIBRARY |
58 | #define MATH_LIBRARY "m" |
59 | #endif |
60 | |
61 | |
62 | /* Manage the manipulation of env vars. |
63 | |
64 | We poison "getenv" and "putenv", so that all enviroment-handling is |
65 | done through this class. Note that poisoning happens in the |
66 | preprocessor at the identifier level, and doesn't distinguish between |
67 | env.getenv (); |
68 | and |
69 | getenv (); |
70 | Hence we need to use "get" for the accessor method, not "getenv". */ |
71 | |
72 | struct env_manager |
73 | { |
74 | public: |
75 | void init (bool can_restore, bool debug); |
76 | const char *get (const char *name); |
77 | void xput (const char *string); |
78 | void restore (); |
79 | |
80 | private: |
81 | bool m_can_restore; |
82 | bool m_debug; |
83 | struct kv |
84 | { |
85 | char *m_key; |
86 | char *m_value; |
87 | }; |
88 | vec<kv> m_keys; |
89 | |
90 | }; |
91 | |
92 | /* The singleton instance of class env_manager. */ |
93 | |
94 | static env_manager env; |
95 | |
96 | /* Initializer for class env_manager. |
97 | |
98 | We can't do this as a constructor since we have a statically |
99 | allocated instance ("env" above). */ |
100 | |
101 | void |
102 | env_manager::init (bool can_restore, bool debug) |
103 | { |
104 | m_can_restore = can_restore; |
105 | m_debug = debug; |
106 | } |
107 | |
108 | /* Get the value of NAME within the environment. Essentially |
109 | a wrapper for ::getenv, but adding logging, and the possibility |
110 | of caching results. */ |
111 | |
112 | const char * |
113 | env_manager::get (const char *name) |
114 | { |
115 | const char *result = ::getenv (name: name); |
116 | if (m_debug) |
117 | fprintf (stderr, format: "env_manager::getenv (%s) -> %s\n", name, result); |
118 | return result; |
119 | } |
120 | |
121 | /* Put the given KEY=VALUE entry STRING into the environment. |
122 | If the env_manager was initialized with CAN_RESTORE set, then |
123 | also record the old value of KEY within the environment, so that it |
124 | can be later restored. */ |
125 | |
126 | void |
127 | env_manager::xput (const char *string) |
128 | { |
129 | if (m_debug) |
130 | fprintf (stderr, format: "env_manager::xput (%s)\n", string); |
131 | if (verbose_flag) |
132 | fnotice (stderr, "%s\n", string); |
133 | |
134 | if (m_can_restore) |
135 | { |
136 | char *equals = strchr (s: const_cast <char *> (string), c: '='); |
137 | gcc_assert (equals); |
138 | |
139 | struct kv kv; |
140 | kv.m_key = xstrndup (string, equals - string); |
141 | const char *cur_value = ::getenv (name: kv.m_key); |
142 | if (m_debug) |
143 | fprintf (stderr, format: "saving old value: %s\n",cur_value); |
144 | kv.m_value = cur_value ? xstrdup (cur_value) : NULL; |
145 | m_keys.safe_push (obj: kv); |
146 | } |
147 | |
148 | ::putenv (CONST_CAST (char *, string)); |
149 | } |
150 | |
151 | /* Undo any xputenv changes made since last restore. |
152 | Can only be called if the env_manager was initialized with |
153 | CAN_RESTORE enabled. */ |
154 | |
155 | void |
156 | env_manager::restore () |
157 | { |
158 | unsigned int i; |
159 | struct kv *item; |
160 | |
161 | gcc_assert (m_can_restore); |
162 | |
163 | FOR_EACH_VEC_ELT_REVERSE (m_keys, i, item) |
164 | { |
165 | if (m_debug) |
166 | printf (format: "restoring saved key: %s value: %s\n", item->m_key, item->m_value); |
167 | if (item->m_value) |
168 | ::setenv (name: item->m_key, value: item->m_value, replace: 1); |
169 | else |
170 | ::unsetenv (name: item->m_key); |
171 | free (ptr: item->m_key); |
172 | free (ptr: item->m_value); |
173 | } |
174 | |
175 | m_keys.truncate (size: 0); |
176 | } |
177 | |
178 | /* Forbid other uses of getenv and putenv. */ |
179 | #if (GCC_VERSION >= 3000) |
180 | #pragma GCC poison getenv putenv |
181 | #endif |
182 | |
183 | |
184 | |
185 | /* By default there is no special suffix for target executables. */ |
186 | #ifdef TARGET_EXECUTABLE_SUFFIX |
187 | #define HAVE_TARGET_EXECUTABLE_SUFFIX |
188 | #else |
189 | #define TARGET_EXECUTABLE_SUFFIX "" |
190 | #endif |
191 | |
192 | /* By default there is no special suffix for host executables. */ |
193 | #ifdef HOST_EXECUTABLE_SUFFIX |
194 | #define HAVE_HOST_EXECUTABLE_SUFFIX |
195 | #else |
196 | #define HOST_EXECUTABLE_SUFFIX "" |
197 | #endif |
198 | |
199 | /* By default, the suffix for target object files is ".o". */ |
200 | #ifdef TARGET_OBJECT_SUFFIX |
201 | #define HAVE_TARGET_OBJECT_SUFFIX |
202 | #else |
203 | #define TARGET_OBJECT_SUFFIX ".o" |
204 | #endif |
205 | |
206 | static const char dir_separator_str[] = { DIR_SEPARATOR, 0 }; |
207 | |
208 | /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */ |
209 | #ifndef LIBRARY_PATH_ENV |
210 | #define LIBRARY_PATH_ENV "LIBRARY_PATH" |
211 | #endif |
212 | |
213 | /* If a stage of compilation returns an exit status >= 1, |
214 | compilation of that file ceases. */ |
215 | |
216 | #define MIN_FATAL_STATUS 1 |
217 | |
218 | /* Flag set by cppspec.cc to 1. */ |
219 | int is_cpp_driver; |
220 | |
221 | /* Flag set to nonzero if an @file argument has been supplied to gcc. */ |
222 | static bool at_file_supplied; |
223 | |
224 | /* Definition of string containing the arguments given to configure. */ |
225 | #include "configargs.h" |
226 | |
227 | /* Flag saying to print the command line options understood by gcc and its |
228 | sub-processes. */ |
229 | |
230 | static int print_help_list; |
231 | |
232 | /* Flag saying to print the version of gcc and its sub-processes. */ |
233 | |
234 | static int print_version; |
235 | |
236 | /* Flag that stores string prefix for which we provide bash completion. */ |
237 | |
238 | static const char *completion = NULL; |
239 | |
240 | /* Flag indicating whether we should ONLY print the command and |
241 | arguments (like verbose_flag) without executing the command. |
242 | Displayed arguments are quoted so that the generated command |
243 | line is suitable for execution. This is intended for use in |
244 | shell scripts to capture the driver-generated command line. */ |
245 | static int verbose_only_flag; |
246 | |
247 | /* Flag indicating how to print command line options of sub-processes. */ |
248 | |
249 | static int print_subprocess_help; |
250 | |
251 | /* Linker suffix passed to -fuse-ld=... */ |
252 | static const char *use_ld; |
253 | |
254 | /* Whether we should report subprocess execution times to a file. */ |
255 | |
256 | FILE *report_times_to_file = NULL; |
257 | |
258 | /* Nonzero means place this string before uses of /, so that include |
259 | and library files can be found in an alternate location. */ |
260 | |
261 | #ifdef TARGET_SYSTEM_ROOT |
262 | #define DEFAULT_TARGET_SYSTEM_ROOT (TARGET_SYSTEM_ROOT) |
263 | #else |
264 | #define DEFAULT_TARGET_SYSTEM_ROOT (0) |
265 | #endif |
266 | static const char *target_system_root = DEFAULT_TARGET_SYSTEM_ROOT; |
267 | |
268 | /* Nonzero means pass the updated target_system_root to the compiler. */ |
269 | |
270 | static int target_system_root_changed; |
271 | |
272 | /* Nonzero means append this string to target_system_root. */ |
273 | |
274 | static const char *target_sysroot_suffix = 0; |
275 | |
276 | /* Nonzero means append this string to target_system_root for headers. */ |
277 | |
278 | static const char *target_sysroot_hdrs_suffix = 0; |
279 | |
280 | /* Nonzero means write "temp" files in source directory |
281 | and use the source file's name in them, and don't delete them. */ |
282 | |
283 | static enum save_temps { |
284 | SAVE_TEMPS_NONE, /* no -save-temps */ |
285 | SAVE_TEMPS_CWD, /* -save-temps in current directory */ |
286 | SAVE_TEMPS_DUMP, /* -save-temps in dumpdir */ |
287 | SAVE_TEMPS_OBJ /* -save-temps in object directory */ |
288 | } save_temps_flag; |
289 | |
290 | /* Set this iff the dumppfx implied by a -save-temps=* option is to |
291 | override a -dumpdir option, if any. */ |
292 | static bool save_temps_overrides_dumpdir = false; |
293 | |
294 | /* -dumpdir, -dumpbase and -dumpbase-ext flags passed in, possibly |
295 | rearranged as they are to be passed down, e.g., dumpbase and |
296 | dumpbase_ext may be cleared if integrated with dumpdir or |
297 | dropped. */ |
298 | static char *dumpdir, *dumpbase, *dumpbase_ext; |
299 | |
300 | /* Usually the length of the string in dumpdir. However, during |
301 | linking, it may be shortened to omit a driver-added trailing dash, |
302 | by then replaced with a trailing period, that is still to be passed |
303 | to sub-processes in -dumpdir, but not to be generally used in spec |
304 | filename expansions. See maybe_run_linker. */ |
305 | static size_t dumpdir_length = 0; |
306 | |
307 | /* Set if the last character in dumpdir is (or was) a dash that the |
308 | driver added to dumpdir after dumpbase or linker output name. */ |
309 | static bool dumpdir_trailing_dash_added = false; |
310 | |
311 | /* True if -r, -shared, -pie, -no-pie, -z lazy, or -z norelro were |
312 | specified on the command line, and therefore -fhardened should not |
313 | add -z now/relro. */ |
314 | static bool avoid_linker_hardening_p; |
315 | |
316 | /* True if -static was specified on the command line. */ |
317 | static bool static_p; |
318 | |
319 | /* Basename of dump and aux outputs, computed from dumpbase (given or |
320 | derived from output name), to override input_basename in non-%w %b |
321 | et al. */ |
322 | static char *outbase; |
323 | static size_t outbase_length = 0; |
324 | |
325 | /* The compiler version. */ |
326 | |
327 | static const char *compiler_version; |
328 | |
329 | /* The target version. */ |
330 | |
331 | static const char *const spec_version = DEFAULT_TARGET_VERSION; |
332 | |
333 | /* The target machine. */ |
334 | |
335 | static const char *spec_machine = DEFAULT_TARGET_MACHINE; |
336 | static const char *spec_host_machine = DEFAULT_REAL_TARGET_MACHINE; |
337 | |
338 | /* List of offload targets. Separated by colon. Empty string for |
339 | -foffload=disable. */ |
340 | |
341 | static char *offload_targets = NULL; |
342 | |
343 | #if OFFLOAD_DEFAULTED |
344 | /* Set to true if -foffload has not been used and offload_targets |
345 | is set to the configured in default. */ |
346 | static bool offload_targets_default; |
347 | #endif |
348 | |
349 | /* Nonzero if cross-compiling. |
350 | When -b is used, the value comes from the `specs' file. */ |
351 | |
352 | #ifdef CROSS_DIRECTORY_STRUCTURE |
353 | static const char *cross_compile = "1"; |
354 | #else |
355 | static const char *cross_compile = "0"; |
356 | #endif |
357 | |
358 | /* Greatest exit code of sub-processes that has been encountered up to |
359 | now. */ |
360 | static int greatest_status = 1; |
361 | |
362 | /* This is the obstack which we use to allocate many strings. */ |
363 | |
364 | static struct obstack obstack; |
365 | |
366 | /* This is the obstack to build an environment variable to pass to |
367 | collect2 that describes all of the relevant switches of what to |
368 | pass the compiler in building the list of pointers to constructors |
369 | and destructors. */ |
370 | |
371 | static struct obstack collect_obstack; |
372 | |
373 | /* Forward declaration for prototypes. */ |
374 | struct path_prefix; |
375 | struct prefix_list; |
376 | |
377 | static void init_spec (void); |
378 | static void store_arg (const char *, int, int); |
379 | static void insert_wrapper (const char *); |
380 | static char *load_specs (const char *); |
381 | static void read_specs (const char *, bool, bool); |
382 | static void set_spec (const char *, const char *, bool); |
383 | static struct compiler *lookup_compiler (const char *, size_t, const char *); |
384 | static char *build_search_list (const struct path_prefix *, const char *, |
385 | bool, bool); |
386 | static void xputenv (const char *); |
387 | static void putenv_from_prefixes (const struct path_prefix *, const char *, |
388 | bool); |
389 | static int access_check (const char *, int); |
390 | static char *find_a_file (const struct path_prefix *, const char *, int, bool); |
391 | static char *find_a_program (const char *); |
392 | static void add_prefix (struct path_prefix *, const char *, const char *, |
393 | int, int, int); |
394 | static void add_sysrooted_prefix (struct path_prefix *, const char *, |
395 | const char *, int, int, int); |
396 | static char *skip_whitespace (char *); |
397 | static void delete_if_ordinary (const char *); |
398 | static void delete_temp_files (void); |
399 | static void delete_failure_queue (void); |
400 | static void clear_failure_queue (void); |
401 | static int check_live_switch (int, int); |
402 | static const char *handle_braces (const char *); |
403 | static inline bool input_suffix_matches (const char *, const char *); |
404 | static inline bool switch_matches (const char *, const char *, int); |
405 | static inline void mark_matching_switches (const char *, const char *, int); |
406 | static inline void process_marked_switches (void); |
407 | static const char *process_brace_body (const char *, const char *, const char *, int, int); |
408 | static const struct spec_function *lookup_spec_function (const char *); |
409 | static const char *eval_spec_function (const char *, const char *, const char *); |
410 | static const char *handle_spec_function (const char *, bool *, const char *); |
411 | static char *save_string (const char *, int); |
412 | static void set_collect_gcc_options (void); |
413 | static int do_spec_1 (const char *, int, const char *); |
414 | static int do_spec_2 (const char *, const char *); |
415 | static void do_option_spec (const char *, const char *); |
416 | static void do_self_spec (const char *); |
417 | static const char *find_file (const char *); |
418 | static int is_directory (const char *); |
419 | static const char *validate_switches (const char *, bool, bool); |
420 | static void validate_all_switches (void); |
421 | static inline void validate_switches_from_spec (const char *, bool); |
422 | static void give_switch (int, int); |
423 | static int default_arg (const char *, int); |
424 | static void set_multilib_dir (void); |
425 | static void print_multilib_info (void); |
426 | static void display_help (void); |
427 | static void add_preprocessor_option (const char *, int); |
428 | static void add_assembler_option (const char *, int); |
429 | static void add_linker_option (const char *, int); |
430 | static void process_command (unsigned int, struct cl_decoded_option *); |
431 | static int execute (void); |
432 | static void alloc_args (void); |
433 | static void clear_args (void); |
434 | static void fatal_signal (int); |
435 | #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) |
436 | static void init_gcc_specs (struct obstack *, const char *, const char *, |
437 | const char *); |
438 | #endif |
439 | #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX) |
440 | static const char *convert_filename (const char *, int, int); |
441 | #endif |
442 | |
443 | static void try_generate_repro (const char **argv); |
444 | static const char *getenv_spec_function (int, const char **); |
445 | static const char *if_exists_spec_function (int, const char **); |
446 | static const char *if_exists_else_spec_function (int, const char **); |
447 | static const char *if_exists_then_else_spec_function (int, const char **); |
448 | static const char *sanitize_spec_function (int, const char **); |
449 | static const char *replace_outfile_spec_function (int, const char **); |
450 | static const char *remove_outfile_spec_function (int, const char **); |
451 | static const char *version_compare_spec_function (int, const char **); |
452 | static const char *include_spec_function (int, const char **); |
453 | static const char *find_file_spec_function (int, const char **); |
454 | static const char *find_plugindir_spec_function (int, const char **); |
455 | static const char *print_asm_header_spec_function (int, const char **); |
456 | static const char *compare_debug_dump_opt_spec_function (int, const char **); |
457 | static const char *compare_debug_self_opt_spec_function (int, const char **); |
458 | static const char *pass_through_libs_spec_func (int, const char **); |
459 | static const char *dumps_spec_func (int, const char **); |
460 | static const char *greater_than_spec_func (int, const char **); |
461 | static const char *debug_level_greater_than_spec_func (int, const char **); |
462 | static const char *dwarf_version_greater_than_spec_func (int, const char **); |
463 | static const char *find_fortran_preinclude_file (int, const char **); |
464 | static const char *join_spec_func (int, const char **); |
465 | static char *convert_white_space (char *); |
466 | static char *quote_spec (char *); |
467 | static char *quote_spec_arg (char *); |
468 | static bool not_actual_file_p (const char *); |
469 | |
470 | |
471 | /* The Specs Language |
472 | |
473 | Specs are strings containing lines, each of which (if not blank) |
474 | is made up of a program name, and arguments separated by spaces. |
475 | The program name must be exact and start from root, since no path |
476 | is searched and it is unreliable to depend on the current working directory. |
477 | Redirection of input or output is not supported; the subprograms must |
478 | accept filenames saying what files to read and write. |
479 | |
480 | In addition, the specs can contain %-sequences to substitute variable text |
481 | or for conditional text. Here is a table of all defined %-sequences. |
482 | Note that spaces are not generated automatically around the results of |
483 | expanding these sequences; therefore, you can concatenate them together |
484 | or with constant text in a single argument. |
485 | |
486 | %% substitute one % into the program name or argument. |
487 | %" substitute an empty argument. |
488 | %i substitute the name of the input file being processed. |
489 | %b substitute the basename for outputs related with the input file |
490 | being processed. This is often a substring of the input file name, |
491 | up to (and not including) the last period but, unless %w is active, |
492 | it is affected by the directory selected by -save-temps=*, by |
493 | -dumpdir, and, in case of multiple compilations, even by -dumpbase |
494 | and -dumpbase-ext and, in case of linking, by the linker output |
495 | name. When %w is active, it derives the main output name only from |
496 | the input file base name; when it is not, it names aux/dump output |
497 | file. |
498 | %B same as %b, but include the input file suffix (text after the last |
499 | period). |
500 | %gSUFFIX |
501 | substitute a file name that has suffix SUFFIX and is chosen |
502 | once per compilation, and mark the argument a la %d. To reduce |
503 | exposure to denial-of-service attacks, the file name is now |
504 | chosen in a way that is hard to predict even when previously |
505 | chosen file names are known. For example, `%g.s ... %g.o ... %g.s' |
506 | might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches |
507 | the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it |
508 | had been pre-processed. Previously, %g was simply substituted |
509 | with a file name chosen once per compilation, without regard |
510 | to any appended suffix (which was therefore treated just like |
511 | ordinary text), making such attacks more likely to succeed. |
512 | %|SUFFIX |
513 | like %g, but if -pipe is in effect, expands simply to "-". |
514 | %mSUFFIX |
515 | like %g, but if -pipe is in effect, expands to nothing. (We have both |
516 | %| and %m to accommodate differences between system assemblers; see |
517 | the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.) |
518 | %uSUFFIX |
519 | like %g, but generates a new temporary file name even if %uSUFFIX |
520 | was already seen. |
521 | %USUFFIX |
522 | substitutes the last file name generated with %uSUFFIX, generating a |
523 | new one if there is no such last file name. In the absence of any |
524 | %uSUFFIX, this is just like %gSUFFIX, except they don't share |
525 | the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s' |
526 | would involve the generation of two distinct file names, one |
527 | for each `%g.s' and another for each `%U.s'. Previously, %U was |
528 | simply substituted with a file name chosen for the previous %u, |
529 | without regard to any appended suffix. |
530 | %jSUFFIX |
531 | substitutes the name of the HOST_BIT_BUCKET, if any, and if it is |
532 | writable, and if save-temps is off; otherwise, substitute the name |
533 | of a temporary file, just like %u. This temporary file is not |
534 | meant for communication between processes, but rather as a junk |
535 | disposal mechanism. |
536 | %.SUFFIX |
537 | substitutes .SUFFIX for the suffixes of a matched switch's args when |
538 | it is subsequently output with %*. SUFFIX is terminated by the next |
539 | space or %. |
540 | %d marks the argument containing or following the %d as a |
541 | temporary file name, so that file will be deleted if GCC exits |
542 | successfully. Unlike %g, this contributes no text to the argument. |
543 | %w marks the argument containing or following the %w as the |
544 | "output file" of this compilation. This puts the argument |
545 | into the sequence of arguments that %o will substitute later. |
546 | %V indicates that this compilation produces no "output file". |
547 | %W{...} |
548 | like %{...} but marks the last argument supplied within as a file |
549 | to be deleted on failure. |
550 | %@{...} |
551 | like %{...} but puts the result into a FILE and substitutes @FILE |
552 | if an @file argument has been supplied. |
553 | %o substitutes the names of all the output files, with spaces |
554 | automatically placed around them. You should write spaces |
555 | around the %o as well or the results are undefined. |
556 | %o is for use in the specs for running the linker. |
557 | Input files whose names have no recognized suffix are not compiled |
558 | at all, but they are included among the output files, so they will |
559 | be linked. |
560 | %O substitutes the suffix for object files. Note that this is |
561 | handled specially when it immediately follows %g, %u, or %U |
562 | (with or without a suffix argument) because of the need for |
563 | those to form complete file names. The handling is such that |
564 | %O is treated exactly as if it had already been substituted, |
565 | except that %g, %u, and %U do not currently support additional |
566 | SUFFIX characters following %O as they would following, for |
567 | example, `.o'. |
568 | %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot |
569 | (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH |
570 | and -B options) and -imultilib as necessary. |
571 | %s current argument is the name of a library or startup file of some sort. |
572 | Search for that file in a standard list of directories |
573 | and substitute the full name found. |
574 | %T current argument is the name of a linker script. |
575 | Search for that file in the current list of directories to scan for |
576 | libraries. If the file is located, insert a --script option into the |
577 | command line followed by the full path name found. If the file is |
578 | not found then generate an error message. |
579 | Note: the current working directory is not searched. |
580 | %eSTR Print STR as an error message. STR is terminated by a newline. |
581 | Use this when inconsistent options are detected. |
582 | %nSTR Print STR as a notice. STR is terminated by a newline. |
583 | %x{OPTION} Accumulate an option for %X. |
584 | %X Output the accumulated linker options specified by compilations. |
585 | %Y Output the accumulated assembler options specified by compilations. |
586 | %Z Output the accumulated preprocessor options specified by compilations. |
587 | %a process ASM_SPEC as a spec. |
588 | This allows config.h to specify part of the spec for running as. |
589 | %A process ASM_FINAL_SPEC as a spec. A capital A is actually |
590 | used here. This can be used to run a post-processor after the |
591 | assembler has done its job. |
592 | %D Dump out a -L option for each directory in startfile_prefixes. |
593 | If multilib_dir is set, extra entries are generated with it affixed. |
594 | %l process LINK_SPEC as a spec. |
595 | %L process LIB_SPEC as a spec. |
596 | %M Output multilib_os_dir. |
597 | %P Output a RUNPATH_OPTION for each directory in startfile_prefixes. |
598 | %G process LIBGCC_SPEC as a spec. |
599 | %R Output the concatenation of target_system_root and |
600 | target_sysroot_suffix. |
601 | %S process STARTFILE_SPEC as a spec. A capital S is actually used here. |
602 | %E process ENDFILE_SPEC as a spec. A capital E is actually used here. |
603 | %C process CPP_SPEC as a spec. |
604 | %1 process CC1_SPEC as a spec. |
605 | %2 process CC1PLUS_SPEC as a spec. |
606 | %* substitute the variable part of a matched option. (See below.) |
607 | Note that each comma in the substituted string is replaced by |
608 | a single space. A space is appended after the last substition |
609 | unless there is more text in current sequence. |
610 | %<S remove all occurrences of -S from the command line. |
611 | Note - this command is position dependent. % commands in the |
612 | spec string before this one will see -S, % commands in the |
613 | spec string after this one will not. |
614 | %>S Similar to "%<S", but keep it in the GCC command line. |
615 | %<S* remove all occurrences of all switches beginning with -S from the |
616 | command line. |
617 | %:function(args) |
618 | Call the named function FUNCTION, passing it ARGS. ARGS is |
619 | first processed as a nested spec string, then split into an |
620 | argument vector in the usual fashion. The function returns |
621 | a string which is processed as if it had appeared literally |
622 | as part of the current spec. |
623 | %{S} substitutes the -S switch, if that switch was given to GCC. |
624 | If that switch was not specified, this substitutes nothing. |
625 | Here S is a metasyntactic variable. |
626 | %{S*} substitutes all the switches specified to GCC whose names start |
627 | with -S. This is used for -o, -I, etc; switches that take |
628 | arguments. GCC considers `-o foo' as being one switch whose |
629 | name starts with `o'. %{o*} would substitute this text, |
630 | including the space; thus, two arguments would be generated. |
631 | %{S*&T*} likewise, but preserve order of S and T options (the order |
632 | of S and T in the spec is not significant). Can be any number |
633 | of ampersand-separated variables; for each the wild card is |
634 | optional. Useful for CPP as %{D*&U*&A*}. |
635 | |
636 | %{S:X} substitutes X, if the -S switch was given to GCC. |
637 | %{!S:X} substitutes X, if the -S switch was NOT given to GCC. |
638 | %{S*:X} substitutes X if one or more switches whose names start |
639 | with -S was given to GCC. Normally X is substituted only |
640 | once, no matter how many such switches appeared. However, |
641 | if %* appears somewhere in X, then X will be substituted |
642 | once for each matching switch, with the %* replaced by the |
643 | part of that switch that matched the '*'. A space will be |
644 | appended after the last substition unless there is more |
645 | text in current sequence. |
646 | %{.S:X} substitutes X, if processing a file with suffix S. |
647 | %{!.S:X} substitutes X, if NOT processing a file with suffix S. |
648 | %{,S:X} substitutes X, if processing a file which will use spec S. |
649 | %{!,S:X} substitutes X, if NOT processing a file which will use spec S. |
650 | |
651 | %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be |
652 | combined with '!', '.', ',', and '*' as above binding stronger |
653 | than the OR. |
654 | If %* appears in X, all of the alternatives must be starred, and |
655 | only the first matching alternative is substituted. |
656 | %{%:function(args):X} |
657 | Call function named FUNCTION with args ARGS. If the function |
658 | returns non-NULL, then X is substituted, if it returns |
659 | NULL, it isn't substituted. |
660 | %{S:X; if S was given to GCC, substitutes X; |
661 | T:Y; else if T was given to GCC, substitutes Y; |
662 | :D} else substitutes D. There can be as many clauses as you need. |
663 | This may be combined with '.', '!', ',', '|', and '*' as above. |
664 | |
665 | %(Spec) processes a specification defined in a specs file as *Spec: |
666 | |
667 | The switch matching text S in a %{S}, %{S:X}, or similar construct can use |
668 | a backslash to ignore the special meaning of the character following it, |
669 | thus allowing literal matching of a character that is otherwise specially |
670 | treated. For example, %{std=iso9899\:1999:X} substitutes X if the |
671 | -std=iso9899:1999 option is given. |
672 | |
673 | The conditional text X in a %{S:X} or similar construct may contain |
674 | other nested % constructs or spaces, or even newlines. They are |
675 | processed as usual, as described above. Trailing white space in X is |
676 | ignored. White space may also appear anywhere on the left side of the |
677 | colon in these constructs, except between . or * and the corresponding |
678 | word. |
679 | |
680 | The -O, -f, -g, -m, and -W switches are handled specifically in these |
681 | constructs. If another value of -O or the negated form of a -f, -m, or |
682 | -W switch is found later in the command line, the earlier switch |
683 | value is ignored, except with {S*} where S is just one letter; this |
684 | passes all matching options. |
685 | |
686 | The character | at the beginning of the predicate text is used to indicate |
687 | that a command should be piped to the following command, but only if -pipe |
688 | is specified. |
689 | |
690 | Note that it is built into GCC which switches take arguments and which |
691 | do not. You might think it would be useful to generalize this to |
692 | allow each compiler's spec to say which switches take arguments. But |
693 | this cannot be done in a consistent fashion. GCC cannot even decide |
694 | which input files have been specified without knowing which switches |
695 | take arguments, and it must know which input files to compile in order |
696 | to tell which compilers to run. |
697 | |
698 | GCC also knows implicitly that arguments starting in `-l' are to be |
699 | treated as compiler output files, and passed to the linker in their |
700 | proper position among the other output files. */ |
701 | |
702 | /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */ |
703 | |
704 | /* config.h can define ASM_SPEC to provide extra args to the assembler |
705 | or extra switch-translations. */ |
706 | #ifndef ASM_SPEC |
707 | #define ASM_SPEC "" |
708 | #endif |
709 | |
710 | /* config.h can define ASM_FINAL_SPEC to run a post processor after |
711 | the assembler has run. */ |
712 | #ifndef ASM_FINAL_SPEC |
713 | #define ASM_FINAL_SPEC \ |
714 | "%{gsplit-dwarf: \n\ |
715 | objcopy --extract-dwo \ |
716 | %{c:%{o*:%*}%{!o*:%w%b%O}}%{!c:%U%O} \ |
717 | %b.dwo \n\ |
718 | objcopy --strip-dwo \ |
719 | %{c:%{o*:%*}%{!o*:%w%b%O}}%{!c:%U%O} \ |
720 | }" |
721 | #endif |
722 | |
723 | /* config.h can define CPP_SPEC to provide extra args to the C preprocessor |
724 | or extra switch-translations. */ |
725 | #ifndef CPP_SPEC |
726 | #define CPP_SPEC "" |
727 | #endif |
728 | |
729 | /* Operating systems can define OS_CC1_SPEC to provide extra args to cc1 and |
730 | cc1plus or extra switch-translations. The OS_CC1_SPEC is appended |
731 | to CC1_SPEC in the initialization of cc1_spec. */ |
732 | #ifndef OS_CC1_SPEC |
733 | #define OS_CC1_SPEC "" |
734 | #endif |
735 | |
736 | /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus |
737 | or extra switch-translations. */ |
738 | #ifndef CC1_SPEC |
739 | #define CC1_SPEC "" |
740 | #endif |
741 | |
742 | /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus |
743 | or extra switch-translations. */ |
744 | #ifndef CC1PLUS_SPEC |
745 | #define CC1PLUS_SPEC "" |
746 | #endif |
747 | |
748 | /* config.h can define LINK_SPEC to provide extra args to the linker |
749 | or extra switch-translations. */ |
750 | #ifndef LINK_SPEC |
751 | #define LINK_SPEC "" |
752 | #endif |
753 | |
754 | /* config.h can define LIB_SPEC to override the default libraries. */ |
755 | #ifndef LIB_SPEC |
756 | #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}" |
757 | #endif |
758 | |
759 | /* When using -fsplit-stack we need to wrap pthread_create, in order |
760 | to initialize the stack guard. We always use wrapping, rather than |
761 | shared library ordering, and we keep the wrapper function in |
762 | libgcc. This is not yet a real spec, though it could become one; |
763 | it is currently just stuffed into LINK_SPEC. FIXME: This wrapping |
764 | only works with GNU ld and gold. */ |
765 | #ifdef HAVE_GOLD_NON_DEFAULT_SPLIT_STACK |
766 | #define STACK_SPLIT_SPEC " %{fsplit-stack: -fuse-ld=gold --wrap=pthread_create}" |
767 | #else |
768 | #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}" |
769 | #endif |
770 | |
771 | #ifndef LIBASAN_SPEC |
772 | #define STATIC_LIBASAN_LIBS \ |
773 | " %{static-libasan|static:%:include(libsanitizer.spec)%(link_libasan)}" |
774 | #ifdef LIBASAN_EARLY_SPEC |
775 | #define LIBASAN_SPEC STATIC_LIBASAN_LIBS |
776 | #elif defined(HAVE_LD_STATIC_DYNAMIC) |
777 | #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \ |
778 | "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \ |
779 | STATIC_LIBASAN_LIBS |
780 | #else |
781 | #define LIBASAN_SPEC "-lasan" STATIC_LIBASAN_LIBS |
782 | #endif |
783 | #endif |
784 | |
785 | #ifndef LIBASAN_EARLY_SPEC |
786 | #define LIBASAN_EARLY_SPEC "" |
787 | #endif |
788 | |
789 | #ifndef LIBHWASAN_SPEC |
790 | #define STATIC_LIBHWASAN_LIBS \ |
791 | " %{static-libhwasan|static:%:include(libsanitizer.spec)%(link_libhwasan)}" |
792 | #ifdef LIBHWASAN_EARLY_SPEC |
793 | #define LIBHWASAN_SPEC STATIC_LIBHWASAN_LIBS |
794 | #elif defined(HAVE_LD_STATIC_DYNAMIC) |
795 | #define LIBHWASAN_SPEC "%{static-libhwasan:" LD_STATIC_OPTION \ |
796 | "} -lhwasan %{static-libhwasan:" LD_DYNAMIC_OPTION "}" \ |
797 | STATIC_LIBHWASAN_LIBS |
798 | #else |
799 | #define LIBHWASAN_SPEC "-lhwasan" STATIC_LIBHWASAN_LIBS |
800 | #endif |
801 | #endif |
802 | |
803 | #ifndef LIBHWASAN_EARLY_SPEC |
804 | #define LIBHWASAN_EARLY_SPEC "" |
805 | #endif |
806 | |
807 | #ifndef LIBTSAN_SPEC |
808 | #define STATIC_LIBTSAN_LIBS \ |
809 | " %{static-libtsan|static:%:include(libsanitizer.spec)%(link_libtsan)}" |
810 | #ifdef LIBTSAN_EARLY_SPEC |
811 | #define LIBTSAN_SPEC STATIC_LIBTSAN_LIBS |
812 | #elif defined(HAVE_LD_STATIC_DYNAMIC) |
813 | #define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \ |
814 | "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \ |
815 | STATIC_LIBTSAN_LIBS |
816 | #else |
817 | #define LIBTSAN_SPEC "-ltsan" STATIC_LIBTSAN_LIBS |
818 | #endif |
819 | #endif |
820 | |
821 | #ifndef LIBTSAN_EARLY_SPEC |
822 | #define LIBTSAN_EARLY_SPEC "" |
823 | #endif |
824 | |
825 | #ifndef LIBLSAN_SPEC |
826 | #define STATIC_LIBLSAN_LIBS \ |
827 | " %{static-liblsan|static:%:include(libsanitizer.spec)%(link_liblsan)}" |
828 | #ifdef LIBLSAN_EARLY_SPEC |
829 | #define LIBLSAN_SPEC STATIC_LIBLSAN_LIBS |
830 | #elif defined(HAVE_LD_STATIC_DYNAMIC) |
831 | #define LIBLSAN_SPEC "%{static-liblsan:" LD_STATIC_OPTION \ |
832 | "} -llsan %{static-liblsan:" LD_DYNAMIC_OPTION "}" \ |
833 | STATIC_LIBLSAN_LIBS |
834 | #else |
835 | #define LIBLSAN_SPEC "-llsan" STATIC_LIBLSAN_LIBS |
836 | #endif |
837 | #endif |
838 | |
839 | #ifndef LIBLSAN_EARLY_SPEC |
840 | #define LIBLSAN_EARLY_SPEC "" |
841 | #endif |
842 | |
843 | #ifndef LIBUBSAN_SPEC |
844 | #define STATIC_LIBUBSAN_LIBS \ |
845 | " %{static-libubsan|static:%:include(libsanitizer.spec)%(link_libubsan)}" |
846 | #ifdef HAVE_LD_STATIC_DYNAMIC |
847 | #define LIBUBSAN_SPEC "%{static-libubsan:" LD_STATIC_OPTION \ |
848 | "} -lubsan %{static-libubsan:" LD_DYNAMIC_OPTION "}" \ |
849 | STATIC_LIBUBSAN_LIBS |
850 | #else |
851 | #define LIBUBSAN_SPEC "-lubsan" STATIC_LIBUBSAN_LIBS |
852 | #endif |
853 | #endif |
854 | |
855 | /* Linker options for compressed debug sections. */ |
856 | #if HAVE_LD_COMPRESS_DEBUG == 0 |
857 | /* No linker support. */ |
858 | #define LINK_COMPRESS_DEBUG_SPEC \ |
859 | " %{gz*:%e-gz is not supported in this configuration} " |
860 | #elif HAVE_LD_COMPRESS_DEBUG == 1 |
861 | /* ELF gABI style. */ |
862 | #define LINK_COMPRESS_DEBUG_SPEC \ |
863 | " %{gz|gz=zlib:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \ |
864 | " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \ |
865 | " %{gz=zstd:%e-gz=zstd is not supported in this configuration} " \ |
866 | " %{gz=zlib-gnu:}" /* Ignore silently zlib-gnu option value. */ |
867 | #elif HAVE_LD_COMPRESS_DEBUG == 2 |
868 | /* ELF gABI style and ZSTD. */ |
869 | #define LINK_COMPRESS_DEBUG_SPEC \ |
870 | " %{gz|gz=zlib:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \ |
871 | " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \ |
872 | " %{gz=zstd:" LD_COMPRESS_DEBUG_OPTION "=zstd}" \ |
873 | " %{gz=zlib-gnu:}" /* Ignore silently zlib-gnu option value. */ |
874 | #else |
875 | #error Unknown value for HAVE_LD_COMPRESS_DEBUG. |
876 | #endif |
877 | |
878 | /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is |
879 | included. */ |
880 | #ifndef LIBGCC_SPEC |
881 | #if defined(REAL_LIBGCC_SPEC) |
882 | #define LIBGCC_SPEC REAL_LIBGCC_SPEC |
883 | #elif defined(LINK_LIBGCC_SPECIAL_1) |
884 | /* Have gcc do the search for libgcc.a. */ |
885 | #define LIBGCC_SPEC "libgcc.a%s" |
886 | #else |
887 | #define LIBGCC_SPEC "-lgcc" |
888 | #endif |
889 | #endif |
890 | |
891 | /* config.h can define STARTFILE_SPEC to override the default crt0 files. */ |
892 | #ifndef STARTFILE_SPEC |
893 | #define STARTFILE_SPEC \ |
894 | "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}" |
895 | #endif |
896 | |
897 | /* config.h can define ENDFILE_SPEC to override the default crtn files. */ |
898 | #ifndef ENDFILE_SPEC |
899 | #define ENDFILE_SPEC "" |
900 | #endif |
901 | |
902 | #ifndef LINKER_NAME |
903 | #define LINKER_NAME "collect2" |
904 | #endif |
905 | |
906 | #ifdef HAVE_AS_DEBUG_PREFIX_MAP |
907 | #define ASM_MAP " %{ffile-prefix-map=*:--debug-prefix-map %*} %{fdebug-prefix-map=*:--debug-prefix-map %*}" |
908 | #else |
909 | #define ASM_MAP "" |
910 | #endif |
911 | |
912 | /* Assembler options for compressed debug sections. */ |
913 | #if HAVE_LD_COMPRESS_DEBUG == 0 |
914 | /* Reject if the linker cannot write compressed debug sections. */ |
915 | #define ASM_COMPRESS_DEBUG_SPEC \ |
916 | " %{gz*:%e-gz is not supported in this configuration} " |
917 | #else /* HAVE_LD_COMPRESS_DEBUG >= 1 */ |
918 | #if HAVE_AS_COMPRESS_DEBUG == 0 |
919 | /* No assembler support. Ignore silently. */ |
920 | #define ASM_COMPRESS_DEBUG_SPEC \ |
921 | " %{gz*:} " |
922 | #elif HAVE_AS_COMPRESS_DEBUG == 1 |
923 | /* ELF gABI style. */ |
924 | #define ASM_COMPRESS_DEBUG_SPEC \ |
925 | " %{gz|gz=zlib:" AS_COMPRESS_DEBUG_OPTION "=zlib}" \ |
926 | " %{gz=none:" AS_COMPRESS_DEBUG_OPTION "=none}" \ |
927 | " %{gz=zlib-gnu:}" /* Ignore silently zlib-gnu option value. */ |
928 | #elif HAVE_AS_COMPRESS_DEBUG == 2 |
929 | /* ELF gABI style and ZSTD. */ |
930 | #define ASM_COMPRESS_DEBUG_SPEC \ |
931 | " %{gz|gz=zlib:" AS_COMPRESS_DEBUG_OPTION "=zlib}" \ |
932 | " %{gz=none:" AS_COMPRESS_DEBUG_OPTION "=none}" \ |
933 | " %{gz=zstd:" AS_COMPRESS_DEBUG_OPTION "=zstd}" \ |
934 | " %{gz=zlib-gnu:}" /* Ignore silently zlib-gnu option value. */ |
935 | #else |
936 | #error Unknown value for HAVE_AS_COMPRESS_DEBUG. |
937 | #endif |
938 | #endif /* HAVE_LD_COMPRESS_DEBUG >= 1 */ |
939 | |
940 | /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g' |
941 | to the assembler, when compiling assembly sources only. */ |
942 | #ifndef ASM_DEBUG_SPEC |
943 | # if defined(HAVE_AS_GDWARF_5_DEBUG_FLAG) && defined(HAVE_AS_WORKING_DWARF_N_FLAG) |
944 | /* If --gdwarf-N is supported and as can handle even compiler generated |
945 | .debug_line with it, supply --gdwarf-N in ASM_DEBUG_OPTION_SPEC rather |
946 | than in ASM_DEBUG_SPEC, so that it applies to both .s and .c etc. |
947 | compilations. */ |
948 | # define ASM_DEBUG_DWARF_OPTION "" |
949 | # elif defined(HAVE_AS_GDWARF_5_DEBUG_FLAG) && !defined(HAVE_LD_BROKEN_PE_DWARF5) |
950 | # define ASM_DEBUG_DWARF_OPTION "%{%:dwarf-version-gt(4):--gdwarf-5;" \ |
951 | "%:dwarf-version-gt(3):--gdwarf-4;" \ |
952 | "%:dwarf-version-gt(2):--gdwarf-3;" \ |
953 | ":--gdwarf2}" |
954 | # else |
955 | # define ASM_DEBUG_DWARF_OPTION "--gdwarf2" |
956 | # endif |
957 | # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) |
958 | # define ASM_DEBUG_SPEC "%{g*:%{%:debug-level-gt(0):" \ |
959 | ASM_DEBUG_DWARF_OPTION "}}" ASM_MAP |
960 | # endif |
961 | # endif |
962 | #ifndef ASM_DEBUG_SPEC |
963 | # define ASM_DEBUG_SPEC "" |
964 | #endif |
965 | |
966 | /* Define ASM_DEBUG_OPTION_SPEC to be a spec suitable for translating '-g' |
967 | to the assembler when compiling all sources. */ |
968 | #ifndef ASM_DEBUG_OPTION_SPEC |
969 | # if defined(HAVE_AS_GDWARF_5_DEBUG_FLAG) && defined(HAVE_AS_WORKING_DWARF_N_FLAG) |
970 | # define ASM_DEBUG_OPTION_DWARF_OPT \ |
971 | "%{%:dwarf-version-gt(4):--gdwarf-5 ;" \ |
972 | "%:dwarf-version-gt(3):--gdwarf-4 ;" \ |
973 | "%:dwarf-version-gt(2):--gdwarf-3 ;" \ |
974 | ":--gdwarf2 }" |
975 | # if defined(DWARF2_DEBUGGING_INFO) |
976 | # define ASM_DEBUG_OPTION_SPEC "%{g*:%{%:debug-level-gt(0):" \ |
977 | ASM_DEBUG_OPTION_DWARF_OPT "}}" |
978 | # endif |
979 | # endif |
980 | #endif |
981 | #ifndef ASM_DEBUG_OPTION_SPEC |
982 | # define ASM_DEBUG_OPTION_SPEC "" |
983 | #endif |
984 | |
985 | /* Here is the spec for running the linker, after compiling all files. */ |
986 | |
987 | /* This is overridable by the target in case they need to specify the |
988 | -lgcc and -lc order specially, yet not require them to override all |
989 | of LINK_COMMAND_SPEC. */ |
990 | #ifndef LINK_GCC_C_SEQUENCE_SPEC |
991 | #define LINK_GCC_C_SEQUENCE_SPEC "%G %{!nolibc:%L %G}" |
992 | #endif |
993 | |
994 | #ifndef LINK_SSP_SPEC |
995 | #ifdef TARGET_LIBC_PROVIDES_SSP |
996 | #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \ |
997 | "|fstack-protector-strong|fstack-protector-explicit:}" |
998 | #else |
999 | #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \ |
1000 | "|fstack-protector-strong|fstack-protector-explicit" \ |
1001 | ":-lssp_nonshared -lssp}" |
1002 | #endif |
1003 | #endif |
1004 | |
1005 | #ifdef ENABLE_DEFAULT_PIE |
1006 | #define PIE_SPEC "!no-pie" |
1007 | #define NO_FPIE1_SPEC "fno-pie" |
1008 | #define FPIE1_SPEC NO_FPIE1_SPEC ":;" |
1009 | #define NO_FPIE2_SPEC "fno-PIE" |
1010 | #define FPIE2_SPEC NO_FPIE2_SPEC ":;" |
1011 | #define NO_FPIE_SPEC NO_FPIE1_SPEC "|" NO_FPIE2_SPEC |
1012 | #define FPIE_SPEC NO_FPIE_SPEC ":;" |
1013 | #define NO_FPIC1_SPEC "fno-pic" |
1014 | #define FPIC1_SPEC NO_FPIC1_SPEC ":;" |
1015 | #define NO_FPIC2_SPEC "fno-PIC" |
1016 | #define FPIC2_SPEC NO_FPIC2_SPEC ":;" |
1017 | #define NO_FPIC_SPEC NO_FPIC1_SPEC "|" NO_FPIC2_SPEC |
1018 | #define FPIC_SPEC NO_FPIC_SPEC ":;" |
1019 | #define NO_FPIE1_AND_FPIC1_SPEC NO_FPIE1_SPEC "|" NO_FPIC1_SPEC |
1020 | #define FPIE1_OR_FPIC1_SPEC NO_FPIE1_AND_FPIC1_SPEC ":;" |
1021 | #define NO_FPIE2_AND_FPIC2_SPEC NO_FPIE2_SPEC "|" NO_FPIC2_SPEC |
1022 | #define FPIE2_OR_FPIC2_SPEC NO_FPIE2_AND_FPIC2_SPEC ":;" |
1023 | #define NO_FPIE_AND_FPIC_SPEC NO_FPIE_SPEC "|" NO_FPIC_SPEC |
1024 | #define FPIE_OR_FPIC_SPEC NO_FPIE_AND_FPIC_SPEC ":;" |
1025 | #else |
1026 | #define PIE_SPEC "pie" |
1027 | #define FPIE1_SPEC "fpie" |
1028 | #define NO_FPIE1_SPEC FPIE1_SPEC ":;" |
1029 | #define FPIE2_SPEC "fPIE" |
1030 | #define NO_FPIE2_SPEC FPIE2_SPEC ":;" |
1031 | #define FPIE_SPEC FPIE1_SPEC "|" FPIE2_SPEC |
1032 | #define NO_FPIE_SPEC FPIE_SPEC ":;" |
1033 | #define FPIC1_SPEC "fpic" |
1034 | #define NO_FPIC1_SPEC FPIC1_SPEC ":;" |
1035 | #define FPIC2_SPEC "fPIC" |
1036 | #define NO_FPIC2_SPEC FPIC2_SPEC ":;" |
1037 | #define FPIC_SPEC FPIC1_SPEC "|" FPIC2_SPEC |
1038 | #define NO_FPIC_SPEC FPIC_SPEC ":;" |
1039 | #define FPIE1_OR_FPIC1_SPEC FPIE1_SPEC "|" FPIC1_SPEC |
1040 | #define NO_FPIE1_AND_FPIC1_SPEC FPIE1_OR_FPIC1_SPEC ":;" |
1041 | #define FPIE2_OR_FPIC2_SPEC FPIE2_SPEC "|" FPIC2_SPEC |
1042 | #define NO_FPIE2_AND_FPIC2_SPEC FPIE1_OR_FPIC2_SPEC ":;" |
1043 | #define FPIE_OR_FPIC_SPEC FPIE_SPEC "|" FPIC_SPEC |
1044 | #define NO_FPIE_AND_FPIC_SPEC FPIE_OR_FPIC_SPEC ":;" |
1045 | #endif |
1046 | |
1047 | #ifndef LINK_PIE_SPEC |
1048 | #ifdef HAVE_LD_PIE |
1049 | #ifndef LD_PIE_SPEC |
1050 | #define LD_PIE_SPEC "-pie" |
1051 | #endif |
1052 | #else |
1053 | #define LD_PIE_SPEC "" |
1054 | #endif |
1055 | #define LINK_PIE_SPEC "%{static|shared|r:;" PIE_SPEC ":" LD_PIE_SPEC "} " |
1056 | #endif |
1057 | |
1058 | #ifndef LINK_BUILDID_SPEC |
1059 | # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID) |
1060 | # define LINK_BUILDID_SPEC "%{!r:--build-id} " |
1061 | # endif |
1062 | #endif |
1063 | |
1064 | #ifndef LTO_PLUGIN_SPEC |
1065 | #define LTO_PLUGIN_SPEC "" |
1066 | #endif |
1067 | |
1068 | /* Conditional to test whether the LTO plugin is used or not. |
1069 | FIXME: For slim LTO we will need to enable plugin unconditionally. This |
1070 | still cause problems with PLUGIN_LD != LD and when plugin is built but |
1071 | not useable. For GCC 4.6 we don't support slim LTO and thus we can enable |
1072 | plugin only when LTO is enabled. We still honor explicit |
1073 | -fuse-linker-plugin if the linker used understands -plugin. */ |
1074 | |
1075 | /* The linker has some plugin support. */ |
1076 | #if HAVE_LTO_PLUGIN > 0 |
1077 | /* The linker used has full plugin support, use LTO plugin by default. */ |
1078 | #if HAVE_LTO_PLUGIN == 2 |
1079 | #define PLUGIN_COND "!fno-use-linker-plugin:%{!fno-lto" |
1080 | #define PLUGIN_COND_CLOSE "}" |
1081 | #else |
1082 | /* The linker used has limited plugin support, use LTO plugin with explicit |
1083 | -fuse-linker-plugin. */ |
1084 | #define PLUGIN_COND "fuse-linker-plugin" |
1085 | #define PLUGIN_COND_CLOSE "" |
1086 | #endif |
1087 | #define LINK_PLUGIN_SPEC \ |
1088 | "%{" PLUGIN_COND": \ |
1089 | -plugin %(linker_plugin_file) \ |
1090 | -plugin-opt=%(lto_wrapper) \ |
1091 | -plugin-opt=-fresolution=%u.res \ |
1092 | " LTO_PLUGIN_SPEC "\ |
1093 | %{flinker-output=*:-plugin-opt=-linker-output-known} \ |
1094 | %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \ |
1095 | }" PLUGIN_COND_CLOSE |
1096 | #else |
1097 | /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */ |
1098 | #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\ |
1099 | %e-fuse-linker-plugin is not supported in this configuration}" |
1100 | #endif |
1101 | |
1102 | /* Linker command line options for -fsanitize= early on the command line. */ |
1103 | #ifndef SANITIZER_EARLY_SPEC |
1104 | #define SANITIZER_EARLY_SPEC "\ |
1105 | %{!nostdlib:%{!r:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_EARLY_SPEC "} \ |
1106 | %{%:sanitize(hwaddress):" LIBHWASAN_EARLY_SPEC "} \ |
1107 | %{%:sanitize(thread):" LIBTSAN_EARLY_SPEC "} \ |
1108 | %{%:sanitize(leak):" LIBLSAN_EARLY_SPEC "}}}}" |
1109 | #endif |
1110 | |
1111 | /* Linker command line options for -fsanitize= late on the command line. */ |
1112 | #ifndef SANITIZER_SPEC |
1113 | #define SANITIZER_SPEC "\ |
1114 | %{!nostdlib:%{!r:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_SPEC "\ |
1115 | %{static:%ecannot specify -static with -fsanitize=address}}\ |
1116 | %{%:sanitize(hwaddress):" LIBHWASAN_SPEC "\ |
1117 | %{static:%ecannot specify -static with -fsanitize=hwaddress}}\ |
1118 | %{%:sanitize(thread):" LIBTSAN_SPEC "\ |
1119 | %{static:%ecannot specify -static with -fsanitize=thread}}\ |
1120 | %{%:sanitize(undefined):" LIBUBSAN_SPEC "}\ |
1121 | %{%:sanitize(leak):" LIBLSAN_SPEC "}}}}" |
1122 | #endif |
1123 | |
1124 | #ifndef POST_LINK_SPEC |
1125 | #define POST_LINK_SPEC "" |
1126 | #endif |
1127 | |
1128 | /* This is the spec to use, once the code for creating the vtable |
1129 | verification runtime library, libvtv.so, has been created. Currently |
1130 | the vtable verification runtime functions are in libstdc++, so we use |
1131 | the spec just below this one. */ |
1132 | #ifndef VTABLE_VERIFICATION_SPEC |
1133 | #if ENABLE_VTABLE_VERIFY |
1134 | #define VTABLE_VERIFICATION_SPEC "\ |
1135 | %{!nostdlib:%{!r:%{fvtable-verify=std: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}\ |
1136 | %{fvtable-verify=preinit: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}}}" |
1137 | #else |
1138 | #define VTABLE_VERIFICATION_SPEC "\ |
1139 | %{fvtable-verify=none:} \ |
1140 | %{fvtable-verify=std: \ |
1141 | %e-fvtable-verify=std is not supported in this configuration} \ |
1142 | %{fvtable-verify=preinit: \ |
1143 | %e-fvtable-verify=preinit is not supported in this configuration}" |
1144 | #endif |
1145 | #endif |
1146 | |
1147 | /* -u* was put back because both BSD and SysV seem to support it. */ |
1148 | /* %{static|no-pie|static-pie:} simply prevents an error message: |
1149 | 1. If the target machine doesn't handle -static. |
1150 | 2. If PIE isn't enabled by default. |
1151 | 3. If the target machine doesn't handle -static-pie. |
1152 | */ |
1153 | /* We want %{T*} after %{L*} and %D so that it can be used to specify linker |
1154 | scripts which exist in user specified directories, or in standard |
1155 | directories. */ |
1156 | /* We pass any -flto flags on to the linker, which is expected |
1157 | to understand them. In practice, this means it had better be collect2. */ |
1158 | /* %{e*} includes -export-dynamic; see comment in common.opt. */ |
1159 | #ifndef LINK_COMMAND_SPEC |
1160 | #define LINK_COMMAND_SPEC "\ |
1161 | %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\ |
1162 | %(linker) " \ |
1163 | LINK_PLUGIN_SPEC \ |
1164 | "%{flto|flto=*:%<fcompare-debug*} \ |
1165 | %{flto} %{fno-lto} %{flto=*} %l " LINK_PIE_SPEC \ |
1166 | "%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \ |
1167 | "%X %{o*} %{e*} %{N} %{n} %{r}\ |
1168 | %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!r:%{!nostartfiles:%S}}} \ |
1169 | %{static|no-pie|static-pie:} %@{L*} %(link_libgcc) " \ |
1170 | VTABLE_VERIFICATION_SPEC " " SANITIZER_EARLY_SPEC " %o "" \ |
1171 | %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\ |
1172 | %:include(libgomp.spec)%(link_gomp)}\ |
1173 | %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\ |
1174 | " STACK_SPLIT_SPEC "\ |
1175 | %{fprofile-arcs|fcondition-coverage|fpath-coverage|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \ |
1176 | %{!nostdlib:%{!r:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}}\ |
1177 | %{!nostdlib:%{!r:%{!nostartfiles:%E}}} %{T*} \n%(post_link) }}}}}}" |
1178 | #endif |
1179 | |
1180 | #ifndef LINK_LIBGCC_SPEC |
1181 | /* Generate -L options for startfile prefix list. */ |
1182 | # define LINK_LIBGCC_SPEC "%D" |
1183 | #endif |
1184 | |
1185 | #ifndef STARTFILE_PREFIX_SPEC |
1186 | # define STARTFILE_PREFIX_SPEC "" |
1187 | #endif |
1188 | |
1189 | #ifndef SYSROOT_SPEC |
1190 | # define SYSROOT_SPEC "--sysroot=%R" |
1191 | #endif |
1192 | |
1193 | #ifndef SYSROOT_SUFFIX_SPEC |
1194 | # define SYSROOT_SUFFIX_SPEC "" |
1195 | #endif |
1196 | |
1197 | #ifndef SYSROOT_HEADERS_SUFFIX_SPEC |
1198 | # define SYSROOT_HEADERS_SUFFIX_SPEC "" |
1199 | #endif |
1200 | |
1201 | #ifndef RUNPATH_OPTION |
1202 | # define RUNPATH_OPTION "-rpath" |
1203 | #endif |
1204 | |
1205 | static const char *asm_debug = ASM_DEBUG_SPEC; |
1206 | static const char *asm_debug_option = ASM_DEBUG_OPTION_SPEC; |
1207 | static const char *cpp_spec = CPP_SPEC; |
1208 | static const char *cc1_spec = CC1_SPEC OS_CC1_SPEC; |
1209 | static const char *cc1plus_spec = CC1PLUS_SPEC; |
1210 | static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC; |
1211 | static const char *link_ssp_spec = LINK_SSP_SPEC; |
1212 | static const char *asm_spec = ASM_SPEC; |
1213 | static const char *asm_final_spec = ASM_FINAL_SPEC; |
1214 | static const char *link_spec = LINK_SPEC; |
1215 | static const char *lib_spec = LIB_SPEC; |
1216 | static const char *link_gomp_spec = ""; |
1217 | static const char *libgcc_spec = LIBGCC_SPEC; |
1218 | static const char *endfile_spec = ENDFILE_SPEC; |
1219 | static const char *startfile_spec = STARTFILE_SPEC; |
1220 | static const char *linker_name_spec = LINKER_NAME; |
1221 | static const char *linker_plugin_file_spec = ""; |
1222 | static const char *lto_wrapper_spec = ""; |
1223 | static const char *lto_gcc_spec = ""; |
1224 | static const char *post_link_spec = POST_LINK_SPEC; |
1225 | static const char *link_command_spec = LINK_COMMAND_SPEC; |
1226 | static const char *link_libgcc_spec = LINK_LIBGCC_SPEC; |
1227 | static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC; |
1228 | static const char *sysroot_spec = SYSROOT_SPEC; |
1229 | static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC; |
1230 | static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC; |
1231 | static const char *self_spec = ""; |
1232 | |
1233 | /* Standard options to cpp, cc1, and as, to reduce duplication in specs. |
1234 | There should be no need to override these in target dependent files, |
1235 | but we need to copy them to the specs file so that newer versions |
1236 | of the GCC driver can correctly drive older tool chains with the |
1237 | appropriate -B options. */ |
1238 | |
1239 | /* When cpplib handles traditional preprocessing, get rid of this, and |
1240 | call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so |
1241 | that we default the front end language better. */ |
1242 | static const char *trad_capable_cpp = |
1243 | "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}"; |
1244 | |
1245 | /* We don't wrap .d files in %W{} since a missing .d file, and |
1246 | therefore no dependency entry, confuses make into thinking a .o |
1247 | file that happens to exist is up-to-date. */ |
1248 | static const char *cpp_unique_options = |
1249 | "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %@{I*&F*} %{P} %I\ |
1250 | %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\ |
1251 | %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\ |
1252 | %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\ |
1253 | %{Mmodules} %{Mno-modules}\ |
1254 | %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\ |
1255 | %{remap} %{%:debug-level-gt(2):-dD}\ |
1256 | %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\ |
1257 | %{H} %C %{D*&U*&A*} %{i*} %Z %i\ |
1258 | %{E|M|MM:%W{o*}} %{-embed*}\ |
1259 | %{fdeps-format=*:%{!fdeps-file=*:-fdeps-file=%:join(%{!o:%b.ddi}%{o*:%.ddi%*})}}\ |
1260 | %{fdeps-format=*:%{!fdeps-target=*:-fdeps-target=%:join(%{!o:%b.o}%{o*:%.o%*})}}"; |
1261 | |
1262 | /* This contains cpp options which are common with cc1_options and are passed |
1263 | only when preprocessing only to avoid duplication. We pass the cc1 spec |
1264 | options to the preprocessor so that it the cc1 spec may manipulate |
1265 | options used to set target flags. Those special target flags settings may |
1266 | in turn cause preprocessor symbols to be defined specially. */ |
1267 | static const char *cpp_options = |
1268 | "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\ |
1269 | %{f*} %{g*:%{%:debug-level-gt(0):%{g*}\ |
1270 | %{!fno-working-directory:-fworking-directory}}} %{O*}\ |
1271 | %{undef} %{save-temps*:-fpch-preprocess}"; |
1272 | |
1273 | /* Pass -d* flags, possibly modifying -dumpdir, -dumpbase et al. |
1274 | |
1275 | Make it easy for a language to override the argument for the |
1276 | %:dumps specs function call. */ |
1277 | #define DUMPS_OPTIONS(EXTS) \ |
1278 | "%<dumpdir %<dumpbase %<dumpbase-ext %{d*} %:dumps(" EXTS ")" |
1279 | |
1280 | /* This contains cpp options which are not passed when the preprocessor |
1281 | output will be used by another program. */ |
1282 | static const char *cpp_debug_options = DUMPS_OPTIONS (""); |
1283 | |
1284 | /* NB: This is shared amongst all front-ends, except for Ada. */ |
1285 | static const char *cc1_options = |
1286 | "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\ |
1287 | %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\ |
1288 | %1 %{!Q:-quiet} %(cpp_debug_options) %{m*} %{aux-info*}\ |
1289 | %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\ |
1290 | %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\ |
1291 | %{Qn:-fno-ident} %{Qy:} %{-help:--help}\ |
1292 | %{-target-help:--target-help}\ |
1293 | %{-version:--version}\ |
1294 | %{-help=*:--help=%*}\ |
1295 | %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %w%b.s}}}\ |
1296 | %{fsyntax-only:-o %j} %{-param*}\ |
1297 | %{coverage:-fprofile-arcs -ftest-coverage}\ |
1298 | %{fprofile-arcs|fcondition-coverage|fpath-coverage|fprofile-generate*|coverage:\ |
1299 | %{!fprofile-update=single:\ |
1300 | %{pthread:-fprofile-update=prefer-atomic}}}"; |
1301 | |
1302 | static const char *asm_options = |
1303 | "%{-target-help:%:print-asm-header()} " |
1304 | #if HAVE_GNU_AS |
1305 | /* If GNU AS is used, then convert -w (no warnings), -I, and -v |
1306 | to the assembler equivalents. */ |
1307 | "%{v} %{w:-W} %{I*} " |
1308 | #endif |
1309 | "%(asm_debug_option)" |
1310 | ASM_COMPRESS_DEBUG_SPEC |
1311 | "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}"; |
1312 | |
1313 | static const char *invoke_as = |
1314 | #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT |
1315 | "%{!fwpa*:\ |
1316 | %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\ |
1317 | %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\ |
1318 | }"; |
1319 | #else |
1320 | "%{!fwpa*:\ |
1321 | %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\ |
1322 | %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\ |
1323 | }"; |
1324 | #endif |
1325 | |
1326 | /* Some compilers have limits on line lengths, and the multilib_select |
1327 | and/or multilib_matches strings can be very long, so we build them at |
1328 | run time. */ |
1329 | static struct obstack multilib_obstack; |
1330 | static const char *multilib_select; |
1331 | static const char *multilib_matches; |
1332 | static const char *multilib_defaults; |
1333 | static const char *multilib_exclusions; |
1334 | static const char *multilib_reuse; |
1335 | |
1336 | /* Check whether a particular argument is a default argument. */ |
1337 | |
1338 | #ifndef MULTILIB_DEFAULTS |
1339 | #define MULTILIB_DEFAULTS { "" } |
1340 | #endif |
1341 | |
1342 | static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS; |
1343 | |
1344 | #ifndef DRIVER_SELF_SPECS |
1345 | #define DRIVER_SELF_SPECS "" |
1346 | #endif |
1347 | |
1348 | /* Linking to libgomp implies pthreads. This is particularly important |
1349 | for targets that use different start files and suchlike. */ |
1350 | #ifndef GOMP_SELF_SPECS |
1351 | #define GOMP_SELF_SPECS \ |
1352 | "%{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1): " \ |
1353 | "-pthread}" |
1354 | #endif |
1355 | |
1356 | /* Likewise for -fgnu-tm. */ |
1357 | #ifndef GTM_SELF_SPECS |
1358 | #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}" |
1359 | #endif |
1360 | |
1361 | static const char *const driver_self_specs[] = { |
1362 | "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns", |
1363 | DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS, GTM_SELF_SPECS, |
1364 | /* This discards -fmultiflags at the end of self specs processing in the |
1365 | driver, so that it is effectively Ignored, without actually marking it as |
1366 | Ignored, which would get it discarded before self specs could remap it. */ |
1367 | "%<fmultiflags" |
1368 | }; |
1369 | |
1370 | #ifndef OPTION_DEFAULT_SPECS |
1371 | #define OPTION_DEFAULT_SPECS { "", "" } |
1372 | #endif |
1373 | |
1374 | struct default_spec |
1375 | { |
1376 | const char *name; |
1377 | const char *spec; |
1378 | }; |
1379 | |
1380 | static const struct default_spec |
1381 | option_default_specs[] = { OPTION_DEFAULT_SPECS }; |
1382 | |
1383 | struct user_specs |
1384 | { |
1385 | struct user_specs *next; |
1386 | const char *filename; |
1387 | }; |
1388 | |
1389 | static struct user_specs *user_specs_head, *user_specs_tail; |
1390 | |
1391 | |
1392 | /* Record the mapping from file suffixes for compilation specs. */ |
1393 | |
1394 | struct compiler |
1395 | { |
1396 | const char *suffix; /* Use this compiler for input files |
1397 | whose names end in this suffix. */ |
1398 | |
1399 | const char *spec; /* To use this compiler, run this spec. */ |
1400 | |
1401 | const char *cpp_spec; /* If non-NULL, substitute this spec |
1402 | for `%C', rather than the usual |
1403 | cpp_spec. */ |
1404 | int combinable; /* If nonzero, compiler can deal with |
1405 | multiple source files at once (IMA). */ |
1406 | int needs_preprocessing; /* If nonzero, source files need to |
1407 | be run through a preprocessor. */ |
1408 | }; |
1409 | |
1410 | /* Pointer to a vector of `struct compiler' that gives the spec for |
1411 | compiling a file, based on its suffix. |
1412 | A file that does not end in any of these suffixes will be passed |
1413 | unchanged to the loader and nothing else will be done to it. |
1414 | |
1415 | An entry containing two 0s is used to terminate the vector. |
1416 | |
1417 | If multiple entries match a file, the last matching one is used. */ |
1418 | |
1419 | static struct compiler *compilers; |
1420 | |
1421 | /* Number of entries in `compilers', not counting the null terminator. */ |
1422 | |
1423 | static int n_compilers; |
1424 | |
1425 | /* The default list of file name suffixes and their compilation specs. */ |
1426 | |
1427 | static const struct compiler default_compilers[] = |
1428 | { |
1429 | /* Add lists of suffixes of known languages here. If those languages |
1430 | were not present when we built the driver, we will hit these copies |
1431 | and be given a more meaningful error than "file not used since |
1432 | linking is not done". */ |
1433 | {.suffix: ".m", .spec: "#Objective-C", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".mi", .spec: "#Objective-C", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1434 | {.suffix: ".mm", .spec: "#Objective-C++", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".M", .spec: "#Objective-C++", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1435 | {.suffix: ".mii", .spec: "#Objective-C++", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1436 | {.suffix: ".cc", .spec: "#C++", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".cxx", .spec: "#C++", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1437 | {.suffix: ".cpp", .spec: "#C++", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".cp", .spec: "#C++", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1438 | {.suffix: ".c++", .spec: "#C++", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".C", .spec: "#C++", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1439 | {.suffix: ".CPP", .spec: "#C++", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".ii", .spec: "#C++", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1440 | {.suffix: ".ads", .spec: "#Ada", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".adb", .spec: "#Ada", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1441 | {.suffix: ".f", .spec: "#Fortran", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".F", .spec: "#Fortran", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1442 | {.suffix: ".for", .spec: "#Fortran", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".FOR", .spec: "#Fortran", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1443 | {.suffix: ".ftn", .spec: "#Fortran", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".FTN", .spec: "#Fortran", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1444 | {.suffix: ".fpp", .spec: "#Fortran", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".FPP", .spec: "#Fortran", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1445 | {.suffix: ".f90", .spec: "#Fortran", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".F90", .spec: "#Fortran", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1446 | {.suffix: ".f95", .spec: "#Fortran", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".F95", .spec: "#Fortran", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1447 | {.suffix: ".f03", .spec: "#Fortran", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".F03", .spec: "#Fortran", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1448 | {.suffix: ".f08", .spec: "#Fortran", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".F08", .spec: "#Fortran", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1449 | {.suffix: ".r", .spec: "#Ratfor", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1450 | {.suffix: ".go", .spec: "#Go", .cpp_spec: 0, .combinable: 1, .needs_preprocessing: 0}, |
1451 | {.suffix: ".d", .spec: "#D", .cpp_spec: 0, .combinable: 1, .needs_preprocessing: 0}, {.suffix: ".dd", .spec: "#D", .cpp_spec: 0, .combinable: 1, .needs_preprocessing: 0}, {.suffix: ".di", .spec: "#D", .cpp_spec: 0, .combinable: 1, .needs_preprocessing: 0}, |
1452 | {.suffix: ".mod", .spec: "#Modula-2", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".m2i", .spec: "#Modula-2", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1453 | /* Next come the entries for C. */ |
1454 | {.suffix: ".c", .spec: "@c", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 1}, |
1455 | {.suffix: "@c", |
1456 | /* cc1 has an integrated ISO C preprocessor. We should invoke the |
1457 | external preprocessor if -save-temps is given. */ |
1458 | .spec: "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\ |
1459 | %{!E:%{!M:%{!MM:\ |
1460 | %{traditional:\ |
1461 | %eGNU C no longer supports -traditional without -E}\ |
1462 | %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \ |
1463 | %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\ |
1464 | cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \ |
1465 | %(cc1_options)}\ |
1466 | %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\ |
1467 | cc1 %(cpp_unique_options) %(cc1_options)}}}\ |
1468 | %{!fsyntax-only:%(invoke_as)}}}}", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 1}, |
1469 | {.suffix: "-", |
1470 | .spec: "%{!E:%e-E or -x required when input is from standard input}\ |
1471 | %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1472 | {.suffix: ".h", .spec: "@c-header", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1473 | {.suffix: "@c-header", |
1474 | /* cc1 has an integrated ISO C preprocessor. We should invoke the |
1475 | external preprocessor if -save-temps is given. */ |
1476 | .spec: "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\ |
1477 | %{!E:%{!M:%{!MM:\ |
1478 | %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \ |
1479 | %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\ |
1480 | cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \ |
1481 | %(cc1_options)\ |
1482 | %{!fsyntax-only:%{!S:-o %g.s} \ |
1483 | %{!fdump-ada-spec*:%{!o*:--output-pch %w%i.gch}\ |
1484 | %W{o*:--output-pch %w%*}}%{!S:%V}}}\ |
1485 | %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\ |
1486 | cc1 %(cpp_unique_options) %(cc1_options)\ |
1487 | %{!fsyntax-only:%{!S:-o %g.s} \ |
1488 | %{!fdump-ada-spec*:%{!o*:--output-pch %w%i.gch}\ |
1489 | %W{o*:--output-pch %w%*}}%{!S:%V}}}}}}}}", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1490 | {.suffix: ".i", .spec: "@cpp-output", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1491 | {.suffix: "@cpp-output", |
1492 | .spec: "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1493 | {.suffix: ".s", .spec: "@assembler", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1494 | {.suffix: "@assembler", |
1495 | .spec: "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1496 | {.suffix: ".sx", .spec: "@assembler-with-cpp", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1497 | {.suffix: ".S", .spec: "@assembler-with-cpp", .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1498 | {.suffix: "@assembler-with-cpp", |
1499 | #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT |
1500 | "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\ |
1501 | %{E|M|MM:%(cpp_debug_options)}\ |
1502 | %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\ |
1503 | as %(asm_debug) %(asm_options) %|.s %A }}}}" |
1504 | #else |
1505 | .spec: "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\ |
1506 | %{E|M|MM:%(cpp_debug_options)}\ |
1507 | %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\ |
1508 | as %(asm_debug) %(asm_options) %m.s %A }}}}" |
1509 | #endif |
1510 | , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1511 | |
1512 | #include "specs.h" |
1513 | /* Mark end of table. */ |
1514 | {.suffix: 0, .spec: 0, .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0} |
1515 | }; |
1516 | |
1517 | /* Number of elements in default_compilers, not counting the terminator. */ |
1518 | |
1519 | static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1; |
1520 | |
1521 | typedef char *char_p; /* For DEF_VEC_P. */ |
1522 | |
1523 | /* A vector of options to give to the linker. |
1524 | These options are accumulated by %x, |
1525 | and substituted into the linker command with %X. */ |
1526 | static vec<char_p> linker_options; |
1527 | |
1528 | /* A vector of options to give to the assembler. |
1529 | These options are accumulated by -Wa, |
1530 | and substituted into the assembler command with %Y. */ |
1531 | static vec<char_p> assembler_options; |
1532 | |
1533 | /* A vector of options to give to the preprocessor. |
1534 | These options are accumulated by -Wp, |
1535 | and substituted into the preprocessor command with %Z. */ |
1536 | static vec<char_p> preprocessor_options; |
1537 | |
1538 | static char * |
1539 | skip_whitespace (char *p) |
1540 | { |
1541 | while (1) |
1542 | { |
1543 | /* A fully-blank line is a delimiter in the SPEC file and shouldn't |
1544 | be considered whitespace. */ |
1545 | if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n') |
1546 | return p + 1; |
1547 | else if (*p == '\n' || *p == ' ' || *p == '\t') |
1548 | p++; |
1549 | else if (*p == '#') |
1550 | { |
1551 | while (*p != '\n') |
1552 | p++; |
1553 | p++; |
1554 | } |
1555 | else |
1556 | break; |
1557 | } |
1558 | |
1559 | return p; |
1560 | } |
1561 | /* Structures to keep track of prefixes to try when looking for files. */ |
1562 | |
1563 | struct prefix_list |
1564 | { |
1565 | const char *prefix; /* String to prepend to the path. */ |
1566 | struct prefix_list *next; /* Next in linked list. */ |
1567 | int require_machine_suffix; /* Don't use without machine_suffix. */ |
1568 | /* 2 means try both machine_suffix and just_machine_suffix. */ |
1569 | int priority; /* Sort key - priority within list. */ |
1570 | int os_multilib; /* 1 if OS multilib scheme should be used, |
1571 | 0 for GCC multilib scheme. */ |
1572 | }; |
1573 | |
1574 | struct path_prefix |
1575 | { |
1576 | struct prefix_list *plist; /* List of prefixes to try */ |
1577 | int max_len; /* Max length of a prefix in PLIST */ |
1578 | const char *name; /* Name of this list (used in config stuff) */ |
1579 | }; |
1580 | |
1581 | /* List of prefixes to try when looking for executables. */ |
1582 | |
1583 | static struct path_prefix exec_prefixes = { .plist: 0, .max_len: 0, .name: "exec"}; |
1584 | |
1585 | /* List of prefixes to try when looking for startup (crt0) files. */ |
1586 | |
1587 | static struct path_prefix startfile_prefixes = { .plist: 0, .max_len: 0, .name: "startfile"}; |
1588 | |
1589 | /* List of prefixes to try when looking for include files. */ |
1590 | |
1591 | static struct path_prefix include_prefixes = { .plist: 0, .max_len: 0, .name: "include"}; |
1592 | |
1593 | /* Suffix to attach to directories searched for commands. |
1594 | This looks like `MACHINE/VERSION/'. */ |
1595 | |
1596 | static const char *machine_suffix = 0; |
1597 | |
1598 | /* Suffix to attach to directories searched for commands. |
1599 | This is just `MACHINE/'. */ |
1600 | |
1601 | static const char *just_machine_suffix = 0; |
1602 | |
1603 | /* Adjusted value of GCC_EXEC_PREFIX envvar. */ |
1604 | |
1605 | static const char *gcc_exec_prefix; |
1606 | |
1607 | /* Adjusted value of standard_libexec_prefix. */ |
1608 | |
1609 | static const char *gcc_libexec_prefix; |
1610 | |
1611 | /* Default prefixes to attach to command names. */ |
1612 | |
1613 | #ifndef STANDARD_STARTFILE_PREFIX_1 |
1614 | #define STANDARD_STARTFILE_PREFIX_1 "/lib/" |
1615 | #endif |
1616 | #ifndef STANDARD_STARTFILE_PREFIX_2 |
1617 | #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/" |
1618 | #endif |
1619 | |
1620 | #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */ |
1621 | #undef MD_EXEC_PREFIX |
1622 | #undef MD_STARTFILE_PREFIX |
1623 | #undef MD_STARTFILE_PREFIX_1 |
1624 | #endif |
1625 | |
1626 | /* If no prefixes defined, use the null string, which will disable them. */ |
1627 | #ifndef MD_EXEC_PREFIX |
1628 | #define MD_EXEC_PREFIX "" |
1629 | #endif |
1630 | #ifndef MD_STARTFILE_PREFIX |
1631 | #define MD_STARTFILE_PREFIX "" |
1632 | #endif |
1633 | #ifndef MD_STARTFILE_PREFIX_1 |
1634 | #define MD_STARTFILE_PREFIX_1 "" |
1635 | #endif |
1636 | |
1637 | /* These directories are locations set at configure-time based on the |
1638 | --prefix option provided to configure. Their initializers are |
1639 | defined in Makefile.in. These paths are not *directly* used when |
1640 | gcc_exec_prefix is set because, in that case, we know where the |
1641 | compiler has been installed, and use paths relative to that |
1642 | location instead. */ |
1643 | static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX; |
1644 | static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX; |
1645 | static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX; |
1646 | static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX; |
1647 | |
1648 | /* For native compilers, these are well-known paths containing |
1649 | components that may be provided by the system. For cross |
1650 | compilers, these paths are not used. */ |
1651 | static const char *md_exec_prefix = MD_EXEC_PREFIX; |
1652 | static const char *md_startfile_prefix = MD_STARTFILE_PREFIX; |
1653 | static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1; |
1654 | static const char *const standard_startfile_prefix_1 |
1655 | = STANDARD_STARTFILE_PREFIX_1; |
1656 | static const char *const standard_startfile_prefix_2 |
1657 | = STANDARD_STARTFILE_PREFIX_2; |
1658 | |
1659 | /* A relative path to be used in finding the location of tools |
1660 | relative to the driver. */ |
1661 | static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX; |
1662 | |
1663 | /* A prefix to be used when this is an accelerator compiler. */ |
1664 | static const char *const accel_dir_suffix = ACCEL_DIR_SUFFIX; |
1665 | |
1666 | /* Subdirectory to use for locating libraries. Set by |
1667 | set_multilib_dir based on the compilation options. */ |
1668 | |
1669 | static const char *multilib_dir; |
1670 | |
1671 | /* Subdirectory to use for locating libraries in OS conventions. Set by |
1672 | set_multilib_dir based on the compilation options. */ |
1673 | |
1674 | static const char *multilib_os_dir; |
1675 | |
1676 | /* Subdirectory to use for locating libraries in multiarch conventions. Set by |
1677 | set_multilib_dir based on the compilation options. */ |
1678 | |
1679 | static const char *multiarch_dir; |
1680 | |
1681 | /* Structure to keep track of the specs that have been defined so far. |
1682 | These are accessed using %(specname) in a compiler or link |
1683 | spec. */ |
1684 | |
1685 | struct spec_list |
1686 | { |
1687 | /* The following 2 fields must be first */ |
1688 | /* to allow EXTRA_SPECS to be initialized */ |
1689 | const char *name; /* name of the spec. */ |
1690 | const char *ptr; /* available ptr if no static pointer */ |
1691 | |
1692 | /* The following fields are not initialized */ |
1693 | /* by EXTRA_SPECS */ |
1694 | const char **ptr_spec; /* pointer to the spec itself. */ |
1695 | struct spec_list *next; /* Next spec in linked list. */ |
1696 | int name_len; /* length of the name */ |
1697 | bool user_p; /* whether string come from file spec. */ |
1698 | bool alloc_p; /* whether string was allocated */ |
1699 | const char *default_ptr; /* The default value of *ptr_spec. */ |
1700 | }; |
1701 | |
1702 | #define INIT_STATIC_SPEC(NAME,PTR) \ |
1703 | { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false, \ |
1704 | *PTR } |
1705 | |
1706 | /* List of statically defined specs. */ |
1707 | static struct spec_list static_specs[] = |
1708 | { |
1709 | INIT_STATIC_SPEC ("asm", &asm_spec), |
1710 | INIT_STATIC_SPEC ("asm_debug", &asm_debug), |
1711 | INIT_STATIC_SPEC ("asm_debug_option", &asm_debug_option), |
1712 | INIT_STATIC_SPEC ("asm_final", &asm_final_spec), |
1713 | INIT_STATIC_SPEC ("asm_options", &asm_options), |
1714 | INIT_STATIC_SPEC ("invoke_as", &invoke_as), |
1715 | INIT_STATIC_SPEC ("cpp", &cpp_spec), |
1716 | INIT_STATIC_SPEC ("cpp_options", &cpp_options), |
1717 | INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options), |
1718 | INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options), |
1719 | INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp), |
1720 | INIT_STATIC_SPEC ("cc1", &cc1_spec), |
1721 | INIT_STATIC_SPEC ("cc1_options", &cc1_options), |
1722 | INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec), |
1723 | INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec), |
1724 | INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec), |
1725 | INIT_STATIC_SPEC ("endfile", &endfile_spec), |
1726 | INIT_STATIC_SPEC ("link", &link_spec), |
1727 | INIT_STATIC_SPEC ("lib", &lib_spec), |
1728 | INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec), |
1729 | INIT_STATIC_SPEC ("libgcc", &libgcc_spec), |
1730 | INIT_STATIC_SPEC ("startfile", &startfile_spec), |
1731 | INIT_STATIC_SPEC ("cross_compile", &cross_compile), |
1732 | INIT_STATIC_SPEC ("version", &compiler_version), |
1733 | INIT_STATIC_SPEC ("multilib", &multilib_select), |
1734 | INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults), |
1735 | INIT_STATIC_SPEC ("multilib_extra", &multilib_extra), |
1736 | INIT_STATIC_SPEC ("multilib_matches", &multilib_matches), |
1737 | INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions), |
1738 | INIT_STATIC_SPEC ("multilib_options", &multilib_options), |
1739 | INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse), |
1740 | INIT_STATIC_SPEC ("linker", &linker_name_spec), |
1741 | INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec), |
1742 | INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec), |
1743 | INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec), |
1744 | INIT_STATIC_SPEC ("post_link", &post_link_spec), |
1745 | INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec), |
1746 | INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix), |
1747 | INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix), |
1748 | INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1), |
1749 | INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec), |
1750 | INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec), |
1751 | INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec), |
1752 | INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec), |
1753 | INIT_STATIC_SPEC ("self_spec", &self_spec), |
1754 | }; |
1755 | |
1756 | #ifdef EXTRA_SPECS /* additional specs needed */ |
1757 | /* Structure to keep track of just the first two args of a spec_list. |
1758 | That is all that the EXTRA_SPECS macro gives us. */ |
1759 | struct spec_list_1 |
1760 | { |
1761 | const char *const name; |
1762 | const char *const ptr; |
1763 | }; |
1764 | |
1765 | static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS }; |
1766 | static struct spec_list *extra_specs = (struct spec_list *) 0; |
1767 | #endif |
1768 | |
1769 | /* List of dynamically allocates specs that have been defined so far. */ |
1770 | |
1771 | static struct spec_list *specs = (struct spec_list *) 0; |
1772 | |
1773 | /* List of static spec functions. */ |
1774 | |
1775 | static const struct spec_function static_spec_functions[] = |
1776 | { |
1777 | { .name: "getenv", .func: getenv_spec_function }, |
1778 | { .name: "if-exists", .func: if_exists_spec_function }, |
1779 | { .name: "if-exists-else", .func: if_exists_else_spec_function }, |
1780 | { .name: "if-exists-then-else", .func: if_exists_then_else_spec_function }, |
1781 | { .name: "sanitize", .func: sanitize_spec_function }, |
1782 | { .name: "replace-outfile", .func: replace_outfile_spec_function }, |
1783 | { .name: "remove-outfile", .func: remove_outfile_spec_function }, |
1784 | { .name: "version-compare", .func: version_compare_spec_function }, |
1785 | { .name: "include", .func: include_spec_function }, |
1786 | { .name: "find-file", .func: find_file_spec_function }, |
1787 | { .name: "find-plugindir", .func: find_plugindir_spec_function }, |
1788 | { .name: "print-asm-header", .func: print_asm_header_spec_function }, |
1789 | { .name: "compare-debug-dump-opt", .func: compare_debug_dump_opt_spec_function }, |
1790 | { .name: "compare-debug-self-opt", .func: compare_debug_self_opt_spec_function }, |
1791 | { .name: "pass-through-libs", .func: pass_through_libs_spec_func }, |
1792 | { .name: "dumps", .func: dumps_spec_func }, |
1793 | { .name: "gt", .func: greater_than_spec_func }, |
1794 | { .name: "debug-level-gt", .func: debug_level_greater_than_spec_func }, |
1795 | { .name: "dwarf-version-gt", .func: dwarf_version_greater_than_spec_func }, |
1796 | { .name: "fortran-preinclude-file", .func: find_fortran_preinclude_file}, |
1797 | { .name: "join", .func: join_spec_func}, |
1798 | #ifdef EXTRA_SPEC_FUNCTIONS |
1799 | EXTRA_SPEC_FUNCTIONS |
1800 | #endif |
1801 | { .name: 0, .func: 0 } |
1802 | }; |
1803 | |
1804 | static int processing_spec_function; |
1805 | |
1806 | /* Add appropriate libgcc specs to OBSTACK, taking into account |
1807 | various permutations of -shared-libgcc, -shared, and such. */ |
1808 | |
1809 | #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) |
1810 | |
1811 | #ifndef USE_LD_AS_NEEDED |
1812 | #define USE_LD_AS_NEEDED 0 |
1813 | #endif |
1814 | |
1815 | static void |
1816 | init_gcc_specs (struct obstack *obstack, const char *shared_name, |
1817 | const char *static_name, const char *eh_name) |
1818 | { |
1819 | char *buf; |
1820 | |
1821 | #if USE_LD_AS_NEEDED |
1822 | buf = concat ("%{static|static-libgcc|static-pie:", static_name, " ", eh_name, "}" |
1823 | "%{!static:%{!static-libgcc:%{!static-pie:" |
1824 | "%{!shared-libgcc:", |
1825 | static_name, " "LD_AS_NEEDED_OPTION " ", |
1826 | shared_name, " "LD_NO_AS_NEEDED_OPTION |
1827 | "}" |
1828 | "%{shared-libgcc:", |
1829 | shared_name, "%{!shared: ", static_name, "}" |
1830 | "}}" |
1831 | #else |
1832 | buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}" |
1833 | "%{!static:%{!static-libgcc:" |
1834 | "%{!shared:" |
1835 | "%{!shared-libgcc:", static_name, " ", eh_name, "}" |
1836 | "%{shared-libgcc:", shared_name, " ", static_name, "}" |
1837 | "}" |
1838 | #ifdef LINK_EH_SPEC |
1839 | "%{shared:" |
1840 | "%{shared-libgcc:", shared_name, "}" |
1841 | "%{!shared-libgcc:", static_name, "}" |
1842 | "}" |
1843 | #else |
1844 | "%{shared:", shared_name, "}" |
1845 | #endif |
1846 | #endif |
1847 | "}}", NULL); |
1848 | |
1849 | obstack_grow (obstack, buf, strlen (buf)); |
1850 | free (ptr: buf); |
1851 | } |
1852 | #endif /* ENABLE_SHARED_LIBGCC */ |
1853 | |
1854 | /* Initialize the specs lookup routines. */ |
1855 | |
1856 | static void |
1857 | init_spec (void) |
1858 | { |
1859 | struct spec_list *next = (struct spec_list *) 0; |
1860 | struct spec_list *sl = (struct spec_list *) 0; |
1861 | int i; |
1862 | |
1863 | if (specs) |
1864 | return; /* Already initialized. */ |
1865 | |
1866 | if (verbose_flag) |
1867 | fnotice (stderr, "Using built-in specs.\n"); |
1868 | |
1869 | #ifdef EXTRA_SPECS |
1870 | extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1)); |
1871 | |
1872 | for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--) |
1873 | { |
1874 | sl = &extra_specs[i]; |
1875 | sl->name = extra_specs_1[i].name; |
1876 | sl->ptr = extra_specs_1[i].ptr; |
1877 | sl->next = next; |
1878 | sl->name_len = strlen (s: sl->name); |
1879 | sl->ptr_spec = &sl->ptr; |
1880 | gcc_assert (sl->ptr_spec != NULL); |
1881 | sl->default_ptr = sl->ptr; |
1882 | next = sl; |
1883 | } |
1884 | #endif |
1885 | |
1886 | for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--) |
1887 | { |
1888 | sl = &static_specs[i]; |
1889 | sl->next = next; |
1890 | next = sl; |
1891 | } |
1892 | |
1893 | #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) |
1894 | /* ??? If neither -shared-libgcc nor --static-libgcc was |
1895 | seen, then we should be making an educated guess. Some proposed |
1896 | heuristics for ELF include: |
1897 | |
1898 | (1) If "-Wl,--export-dynamic", then it's a fair bet that the |
1899 | program will be doing dynamic loading, which will likely |
1900 | need the shared libgcc. |
1901 | |
1902 | (2) If "-ldl", then it's also a fair bet that we're doing |
1903 | dynamic loading. |
1904 | |
1905 | (3) For each ET_DYN we're linking against (either through -lfoo |
1906 | or /some/path/foo.so), check to see whether it or one of |
1907 | its dependencies depends on a shared libgcc. |
1908 | |
1909 | (4) If "-shared" |
1910 | |
1911 | If the runtime is fixed to look for program headers instead |
1912 | of calling __register_frame_info at all, for each object, |
1913 | use the shared libgcc if any EH symbol referenced. |
1914 | |
1915 | If crtstuff is fixed to not invoke __register_frame_info |
1916 | automatically, for each object, use the shared libgcc if |
1917 | any non-empty unwind section found. |
1918 | |
1919 | Doing any of this probably requires invoking an external program to |
1920 | do the actual object file scanning. */ |
1921 | { |
1922 | const char *p = libgcc_spec; |
1923 | int in_sep = 1; |
1924 | |
1925 | /* Transform the extant libgcc_spec into one that uses the shared libgcc |
1926 | when given the proper command line arguments. */ |
1927 | while (*p) |
1928 | { |
1929 | if (in_sep && *p == '-' && startswith (str: p, prefix: "-lgcc")) |
1930 | { |
1931 | init_gcc_specs (obstack: &obstack, |
1932 | shared_name: "-lgcc_s" |
1933 | #ifdef USE_LIBUNWIND_EXCEPTIONS |
1934 | " -lunwind" |
1935 | #endif |
1936 | , |
1937 | static_name: "-lgcc", |
1938 | eh_name: "-lgcc_eh" |
1939 | #ifdef USE_LIBUNWIND_EXCEPTIONS |
1940 | # ifdef HAVE_LD_STATIC_DYNAMIC |
1941 | " %{!static:%{!static-pie:"LD_STATIC_OPTION "}} -lunwind" |
1942 | " %{!static:%{!static-pie:"LD_DYNAMIC_OPTION "}}" |
1943 | # else |
1944 | " -lunwind" |
1945 | # endif |
1946 | #endif |
1947 | ); |
1948 | |
1949 | p += 5; |
1950 | in_sep = 0; |
1951 | } |
1952 | else if (in_sep && *p == 'l' && startswith (str: p, prefix: "libgcc.a%s")) |
1953 | { |
1954 | /* Ug. We don't know shared library extensions. Hope that |
1955 | systems that use this form don't do shared libraries. */ |
1956 | init_gcc_specs (obstack: &obstack, |
1957 | shared_name: "-lgcc_s", |
1958 | static_name: "libgcc.a%s", |
1959 | eh_name: "libgcc_eh.a%s" |
1960 | #ifdef USE_LIBUNWIND_EXCEPTIONS |
1961 | " -lunwind" |
1962 | #endif |
1963 | ); |
1964 | p += 10; |
1965 | in_sep = 0; |
1966 | } |
1967 | else |
1968 | { |
1969 | obstack_1grow (&obstack, *p); |
1970 | in_sep = (*p == ' '); |
1971 | p += 1; |
1972 | } |
1973 | } |
1974 | |
1975 | obstack_1grow (&obstack, '\0'); |
1976 | libgcc_spec = XOBFINISH (&obstack, const char *); |
1977 | } |
1978 | #endif |
1979 | #ifdef USE_AS_TRADITIONAL_FORMAT |
1980 | /* Prepend "--traditional-format" to whatever asm_spec we had before. */ |
1981 | { |
1982 | static const char tf[] = "--traditional-format "; |
1983 | obstack_grow (&obstack, tf, sizeof (tf) - 1); |
1984 | obstack_grow0 (&obstack, asm_spec, strlen (asm_spec)); |
1985 | asm_spec = XOBFINISH (&obstack, const char *); |
1986 | } |
1987 | #endif |
1988 | |
1989 | #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \ |
1990 | defined LINKER_HASH_STYLE |
1991 | # ifdef LINK_BUILDID_SPEC |
1992 | /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */ |
1993 | obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof (LINK_BUILDID_SPEC) - 1); |
1994 | # endif |
1995 | # ifdef LINK_EH_SPEC |
1996 | /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */ |
1997 | obstack_grow (&obstack, LINK_EH_SPEC, sizeof (LINK_EH_SPEC) - 1); |
1998 | # endif |
1999 | # ifdef LINKER_HASH_STYLE |
2000 | /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had |
2001 | before. */ |
2002 | { |
2003 | static const char hash_style[] = "--hash-style="; |
2004 | obstack_grow (&obstack, hash_style, sizeof (hash_style) - 1); |
2005 | obstack_grow (&obstack, LINKER_HASH_STYLE, sizeof (LINKER_HASH_STYLE) - 1); |
2006 | obstack_1grow (&obstack, ' '); |
2007 | } |
2008 | # endif |
2009 | obstack_grow0 (&obstack, link_spec, strlen (link_spec)); |
2010 | link_spec = XOBFINISH (&obstack, const char *); |
2011 | #endif |
2012 | |
2013 | specs = sl; |
2014 | } |
2015 | |
2016 | /* Update the entry for SPEC in the static_specs table to point to VALUE, |
2017 | ensuring that we free the previous value if necessary. Set alloc_p for the |
2018 | entry to ALLOC_P: this determines whether we take ownership of VALUE (i.e. |
2019 | whether we need to free it later on). */ |
2020 | static void |
2021 | set_static_spec (const char **spec, const char *value, bool alloc_p) |
2022 | { |
2023 | struct spec_list *sl = NULL; |
2024 | |
2025 | for (unsigned i = 0; i < ARRAY_SIZE (static_specs); i++) |
2026 | { |
2027 | if (static_specs[i].ptr_spec == spec) |
2028 | { |
2029 | sl = static_specs + i; |
2030 | break; |
2031 | } |
2032 | } |
2033 | |
2034 | gcc_assert (sl); |
2035 | |
2036 | if (sl->alloc_p) |
2037 | { |
2038 | const char *old = *spec; |
2039 | free (ptr: const_cast <char *> (old)); |
2040 | } |
2041 | |
2042 | *spec = value; |
2043 | sl->alloc_p = alloc_p; |
2044 | } |
2045 | |
2046 | /* Update a static spec to a new string, taking ownership of that |
2047 | string's memory. */ |
2048 | static void set_static_spec_owned (const char **spec, const char *val) |
2049 | { |
2050 | return set_static_spec (spec, value: val, alloc_p: true); |
2051 | } |
2052 | |
2053 | /* Update a static spec to point to a new value, but don't take |
2054 | ownership of (i.e. don't free) that string. */ |
2055 | static void set_static_spec_shared (const char **spec, const char *val) |
2056 | { |
2057 | return set_static_spec (spec, value: val, alloc_p: false); |
2058 | } |
2059 | |
2060 | |
2061 | /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is |
2062 | removed; If the spec starts with a + then SPEC is added to the end of the |
2063 | current spec. */ |
2064 | |
2065 | static void |
2066 | set_spec (const char *name, const char *spec, bool user_p) |
2067 | { |
2068 | struct spec_list *sl; |
2069 | const char *old_spec; |
2070 | int name_len = strlen (s: name); |
2071 | int i; |
2072 | |
2073 | /* If this is the first call, initialize the statically allocated specs. */ |
2074 | if (!specs) |
2075 | { |
2076 | struct spec_list *next = (struct spec_list *) 0; |
2077 | for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--) |
2078 | { |
2079 | sl = &static_specs[i]; |
2080 | sl->next = next; |
2081 | next = sl; |
2082 | } |
2083 | specs = sl; |
2084 | } |
2085 | |
2086 | /* See if the spec already exists. */ |
2087 | for (sl = specs; sl; sl = sl->next) |
2088 | if (name_len == sl->name_len && !strcmp (s1: sl->name, s2: name)) |
2089 | break; |
2090 | |
2091 | if (!sl) |
2092 | { |
2093 | /* Not found - make it. */ |
2094 | sl = XNEW (struct spec_list); |
2095 | sl->name = xstrdup (name); |
2096 | sl->name_len = name_len; |
2097 | sl->ptr_spec = &sl->ptr; |
2098 | sl->alloc_p = 0; |
2099 | *(sl->ptr_spec) = ""; |
2100 | sl->next = specs; |
2101 | sl->default_ptr = NULL; |
2102 | specs = sl; |
2103 | } |
2104 | |
2105 | old_spec = *(sl->ptr_spec); |
2106 | *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1])) |
2107 | ? concat (old_spec, spec + 1, NULL) |
2108 | : xstrdup (spec)); |
2109 | |
2110 | #ifdef DEBUG_SPECS |
2111 | if (verbose_flag) |
2112 | fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec)); |
2113 | #endif |
2114 | |
2115 | /* Free the old spec. */ |
2116 | if (old_spec && sl->alloc_p) |
2117 | free (CONST_CAST (char *, old_spec)); |
2118 | |
2119 | sl->user_p = user_p; |
2120 | sl->alloc_p = true; |
2121 | } |
2122 | |
2123 | /* Accumulate a command (program name and args), and run it. */ |
2124 | |
2125 | typedef const char *const_char_p; /* For DEF_VEC_P. */ |
2126 | |
2127 | /* Vector of pointers to arguments in the current line of specifications. */ |
2128 | static vec<const_char_p> argbuf; |
2129 | |
2130 | /* Likewise, but for the current @file. */ |
2131 | static vec<const_char_p> at_file_argbuf; |
2132 | |
2133 | /* Whether an @file is currently open. */ |
2134 | static bool in_at_file = false; |
2135 | |
2136 | /* Were the options -c, -S or -E passed. */ |
2137 | static int have_c = 0; |
2138 | |
2139 | /* Was the option -o passed. */ |
2140 | static int have_o = 0; |
2141 | |
2142 | /* Was the option -E passed. */ |
2143 | static int have_E = 0; |
2144 | |
2145 | /* Pointer to output file name passed in with -o. */ |
2146 | static const char *output_file = 0; |
2147 | |
2148 | /* Pointer to input file name passed in with -truncate. |
2149 | This file should be truncated after linking. */ |
2150 | static const char *totruncate_file = 0; |
2151 | |
2152 | /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated |
2153 | temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for |
2154 | it here. */ |
2155 | |
2156 | static struct temp_name { |
2157 | const char *suffix; /* suffix associated with the code. */ |
2158 | int length; /* strlen (suffix). */ |
2159 | int unique; /* Indicates whether %g or %u/%U was used. */ |
2160 | const char *filename; /* associated filename. */ |
2161 | int filename_length; /* strlen (filename). */ |
2162 | struct temp_name *next; |
2163 | } *temp_names; |
2164 | |
2165 | /* Number of commands executed so far. */ |
2166 | |
2167 | static int execution_count; |
2168 | |
2169 | /* Number of commands that exited with a signal. */ |
2170 | |
2171 | static int signal_count; |
2172 | |
2173 | /* Allocate the argument vector. */ |
2174 | |
2175 | static void |
2176 | alloc_args (void) |
2177 | { |
2178 | argbuf.create (nelems: 10); |
2179 | at_file_argbuf.create (nelems: 10); |
2180 | } |
2181 | |
2182 | /* Clear out the vector of arguments (after a command is executed). */ |
2183 | |
2184 | static void |
2185 | clear_args (void) |
2186 | { |
2187 | argbuf.truncate (size: 0); |
2188 | at_file_argbuf.truncate (size: 0); |
2189 | } |
2190 | |
2191 | /* Add one argument to the vector at the end. |
2192 | This is done when a space is seen or at the end of the line. |
2193 | If DELETE_ALWAYS is nonzero, the arg is a filename |
2194 | and the file should be deleted eventually. |
2195 | If DELETE_FAILURE is nonzero, the arg is a filename |
2196 | and the file should be deleted if this compilation fails. */ |
2197 | |
2198 | static void |
2199 | store_arg (const char *arg, int delete_always, int delete_failure) |
2200 | { |
2201 | if (in_at_file) |
2202 | at_file_argbuf.safe_push (obj: arg); |
2203 | else |
2204 | argbuf.safe_push (obj: arg); |
2205 | |
2206 | if (delete_always || delete_failure) |
2207 | { |
2208 | const char *p; |
2209 | /* If the temporary file we should delete is specified as |
2210 | part of a joined argument extract the filename. */ |
2211 | if (arg[0] == '-' |
2212 | && (p = strrchr (s: arg, c: '='))) |
2213 | arg = p + 1; |
2214 | record_temp_file (arg, delete_always, delete_failure); |
2215 | } |
2216 | } |
2217 | |
2218 | /* Open a temporary @file into which subsequent arguments will be stored. */ |
2219 | |
2220 | static void |
2221 | open_at_file (void) |
2222 | { |
2223 | if (in_at_file) |
2224 | fatal_error (input_location, "cannot open nested response file"); |
2225 | else |
2226 | in_at_file = true; |
2227 | } |
2228 | |
2229 | /* Create a temporary @file name. */ |
2230 | |
2231 | static char *make_at_file (void) |
2232 | { |
2233 | static int fileno = 0; |
2234 | char filename[20]; |
2235 | const char *base, *ext; |
2236 | |
2237 | if (!save_temps_flag) |
2238 | return make_temp_file (""); |
2239 | |
2240 | base = dumpbase; |
2241 | if (!(base && *base)) |
2242 | base = dumpdir; |
2243 | if (!(base && *base)) |
2244 | base = "a"; |
2245 | |
2246 | sprintf (s: filename, format: ".args.%d", fileno++); |
2247 | ext = filename; |
2248 | |
2249 | if (base == dumpdir && dumpdir_trailing_dash_added) |
2250 | ext++; |
2251 | |
2252 | return concat (base, ext, NULL); |
2253 | } |
2254 | |
2255 | /* Close the temporary @file and add @file to the argument list. */ |
2256 | |
2257 | static void |
2258 | close_at_file (void) |
2259 | { |
2260 | if (!in_at_file) |
2261 | fatal_error (input_location, "cannot close nonexistent response file"); |
2262 | |
2263 | in_at_file = false; |
2264 | |
2265 | const unsigned int n_args = at_file_argbuf.length (); |
2266 | if (n_args == 0) |
2267 | return; |
2268 | |
2269 | char **argv = XALLOCAVEC (char *, n_args + 1); |
2270 | char *temp_file = make_at_file (); |
2271 | char *at_argument = concat ("@", temp_file, NULL); |
2272 | FILE *f = fopen (filename: temp_file, modes: "w"); |
2273 | int status; |
2274 | unsigned int i; |
2275 | |
2276 | /* Copy the strings over. */ |
2277 | for (i = 0; i < n_args; i++) |
2278 | argv[i] = CONST_CAST (char *, at_file_argbuf[i]); |
2279 | argv[i] = NULL; |
2280 | |
2281 | at_file_argbuf.truncate (size: 0); |
2282 | |
2283 | if (f == NULL) |
2284 | fatal_error (input_location, "could not open temporary response file %s", |
2285 | temp_file); |
2286 | |
2287 | status = writeargv (argv, f); |
2288 | |
2289 | if (status) |
2290 | fatal_error (input_location, |
2291 | "could not write to temporary response file %s", |
2292 | temp_file); |
2293 | |
2294 | status = fclose (stream: f); |
2295 | |
2296 | if (status == EOF) |
2297 | fatal_error (input_location, "could not close temporary response file %s", |
2298 | temp_file); |
2299 | |
2300 | store_arg (arg: at_argument, delete_always: 0, delete_failure: 0); |
2301 | |
2302 | record_temp_file (temp_file, !save_temps_flag, !save_temps_flag); |
2303 | } |
2304 | |
2305 | /* Load specs from a file name named FILENAME, replacing occurrences of |
2306 | various different types of line-endings, \r\n, \n\r and just \r, with |
2307 | a single \n. */ |
2308 | |
2309 | static char * |
2310 | load_specs (const char *filename) |
2311 | { |
2312 | int desc; |
2313 | int readlen; |
2314 | struct stat statbuf; |
2315 | char *buffer; |
2316 | char *buffer_p; |
2317 | char *specs; |
2318 | char *specs_p; |
2319 | |
2320 | if (verbose_flag) |
2321 | fnotice (stderr, "Reading specs from %s\n", filename); |
2322 | |
2323 | /* Open and stat the file. */ |
2324 | desc = open (file: filename, O_RDONLY, 0); |
2325 | if (desc < 0) |
2326 | { |
2327 | failed: |
2328 | /* This leaves DESC open, but the OS will save us. */ |
2329 | fatal_error (input_location, "cannot read spec file %qs: %m", filename); |
2330 | } |
2331 | |
2332 | if (stat (file: filename, buf: &statbuf) < 0) |
2333 | goto failed; |
2334 | |
2335 | /* Read contents of file into BUFFER. */ |
2336 | buffer = XNEWVEC (char, statbuf.st_size + 1); |
2337 | readlen = read (fd: desc, buf: buffer, nbytes: (unsigned) statbuf.st_size); |
2338 | if (readlen < 0) |
2339 | goto failed; |
2340 | buffer[readlen] = 0; |
2341 | close (fd: desc); |
2342 | |
2343 | specs = XNEWVEC (char, readlen + 1); |
2344 | specs_p = specs; |
2345 | for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++) |
2346 | { |
2347 | int skip = 0; |
2348 | char c = *buffer_p; |
2349 | if (c == '\r') |
2350 | { |
2351 | if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */ |
2352 | skip = 1; |
2353 | else if (*(buffer_p + 1) == '\n') /* \r\n */ |
2354 | skip = 1; |
2355 | else /* \r */ |
2356 | c = '\n'; |
2357 | } |
2358 | if (! skip) |
2359 | *specs_p++ = c; |
2360 | } |
2361 | *specs_p = '\0'; |
2362 | |
2363 | free (ptr: buffer); |
2364 | return (specs); |
2365 | } |
2366 | |
2367 | /* Read compilation specs from a file named FILENAME, |
2368 | replacing the default ones. |
2369 | |
2370 | A suffix which starts with `*' is a definition for |
2371 | one of the machine-specific sub-specs. The "suffix" should be |
2372 | *asm, *cc1, *cpp, *link, *startfile, etc. |
2373 | The corresponding spec is stored in asm_spec, etc., |
2374 | rather than in the `compilers' vector. |
2375 | |
2376 | Anything invalid in the file is a fatal error. */ |
2377 | |
2378 | static void |
2379 | read_specs (const char *filename, bool main_p, bool user_p) |
2380 | { |
2381 | char *buffer; |
2382 | char *p; |
2383 | |
2384 | buffer = load_specs (filename); |
2385 | |
2386 | /* Scan BUFFER for specs, putting them in the vector. */ |
2387 | p = buffer; |
2388 | while (1) |
2389 | { |
2390 | char *suffix; |
2391 | char *spec; |
2392 | char *in, *out, *p1, *p2, *p3; |
2393 | |
2394 | /* Advance P in BUFFER to the next nonblank nocomment line. */ |
2395 | p = skip_whitespace (p); |
2396 | if (*p == 0) |
2397 | break; |
2398 | |
2399 | /* Is this a special command that starts with '%'? */ |
2400 | /* Don't allow this for the main specs file, since it would |
2401 | encourage people to overwrite it. */ |
2402 | if (*p == '%' && !main_p) |
2403 | { |
2404 | p1 = p; |
2405 | while (*p && *p != '\n') |
2406 | p++; |
2407 | |
2408 | /* Skip '\n'. */ |
2409 | p++; |
2410 | |
2411 | if (startswith (str: p1, prefix: "%include") |
2412 | && (p1[sizeof "%include"- 1] == ' ' |
2413 | || p1[sizeof "%include"- 1] == '\t')) |
2414 | { |
2415 | char *new_filename; |
2416 | |
2417 | p1 += sizeof ("%include"); |
2418 | while (*p1 == ' ' || *p1 == '\t') |
2419 | p1++; |
2420 | |
2421 | if (*p1++ != '<' || p[-2] != '>') |
2422 | fatal_error (input_location, |
2423 | "specs %%include syntax malformed after " |
2424 | "%td characters", p1 - buffer + 1); |
2425 | |
2426 | p[-2] = '\0'; |
2427 | new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true); |
2428 | read_specs (filename: new_filename ? new_filename : p1, main_p: false, user_p); |
2429 | continue; |
2430 | } |
2431 | else if (startswith (str: p1, prefix: "%include_noerr") |
2432 | && (p1[sizeof "%include_noerr"- 1] == ' ' |
2433 | || p1[sizeof "%include_noerr"- 1] == '\t')) |
2434 | { |
2435 | char *new_filename; |
2436 | |
2437 | p1 += sizeof "%include_noerr"; |
2438 | while (*p1 == ' ' || *p1 == '\t') |
2439 | p1++; |
2440 | |
2441 | if (*p1++ != '<' || p[-2] != '>') |
2442 | fatal_error (input_location, |
2443 | "specs %%include syntax malformed after " |
2444 | "%td characters", p1 - buffer + 1); |
2445 | |
2446 | p[-2] = '\0'; |
2447 | new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true); |
2448 | if (new_filename) |
2449 | read_specs (filename: new_filename, main_p: false, user_p); |
2450 | else if (verbose_flag) |
2451 | fnotice (stderr, "could not find specs file %s\n", p1); |
2452 | continue; |
2453 | } |
2454 | else if (startswith (str: p1, prefix: "%rename") |
2455 | && (p1[sizeof "%rename"- 1] == ' ' |
2456 | || p1[sizeof "%rename"- 1] == '\t')) |
2457 | { |
2458 | int name_len; |
2459 | struct spec_list *sl; |
2460 | struct spec_list *newsl; |
2461 | |
2462 | /* Get original name. */ |
2463 | p1 += sizeof "%rename"; |
2464 | while (*p1 == ' ' || *p1 == '\t') |
2465 | p1++; |
2466 | |
2467 | if (! ISALPHA ((unsigned char) *p1)) |
2468 | fatal_error (input_location, |
2469 | "specs %%rename syntax malformed after " |
2470 | "%td characters", p1 - buffer); |
2471 | |
2472 | p2 = p1; |
2473 | while (*p2 && !ISSPACE ((unsigned char) *p2)) |
2474 | p2++; |
2475 | |
2476 | if (*p2 != ' ' && *p2 != '\t') |
2477 | fatal_error (input_location, |
2478 | "specs %%rename syntax malformed after " |
2479 | "%td characters", p2 - buffer); |
2480 | |
2481 | name_len = p2 - p1; |
2482 | *p2++ = '\0'; |
2483 | while (*p2 == ' ' || *p2 == '\t') |
2484 | p2++; |
2485 | |
2486 | if (! ISALPHA ((unsigned char) *p2)) |
2487 | fatal_error (input_location, |
2488 | "specs %%rename syntax malformed after " |
2489 | "%td characters", p2 - buffer); |
2490 | |
2491 | /* Get new spec name. */ |
2492 | p3 = p2; |
2493 | while (*p3 && !ISSPACE ((unsigned char) *p3)) |
2494 | p3++; |
2495 | |
2496 | if (p3 != p - 1) |
2497 | fatal_error (input_location, |
2498 | "specs %%rename syntax malformed after " |
2499 | "%td characters", p3 - buffer); |
2500 | *p3 = '\0'; |
2501 | |
2502 | for (sl = specs; sl; sl = sl->next) |
2503 | if (name_len == sl->name_len && !strcmp (s1: sl->name, s2: p1)) |
2504 | break; |
2505 | |
2506 | if (!sl) |
2507 | fatal_error (input_location, |
2508 | "specs %s spec was not found to be renamed", p1); |
2509 | |
2510 | if (strcmp (s1: p1, s2: p2) == 0) |
2511 | continue; |
2512 | |
2513 | for (newsl = specs; newsl; newsl = newsl->next) |
2514 | if (strcmp (s1: newsl->name, s2: p2) == 0) |
2515 | fatal_error (input_location, |
2516 | "%s: attempt to rename spec %qs to " |
2517 | "already defined spec %qs", |
2518 | filename, p1, p2); |
2519 | |
2520 | if (verbose_flag) |
2521 | { |
2522 | fnotice (stderr, "rename spec %s to %s\n", p1, p2); |
2523 | #ifdef DEBUG_SPECS |
2524 | fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec)); |
2525 | #endif |
2526 | } |
2527 | |
2528 | set_spec (name: p2, spec: *(sl->ptr_spec), user_p); |
2529 | if (sl->alloc_p) |
2530 | free (CONST_CAST (char *, *(sl->ptr_spec))); |
2531 | |
2532 | *(sl->ptr_spec) = ""; |
2533 | sl->alloc_p = 0; |
2534 | continue; |
2535 | } |
2536 | else |
2537 | fatal_error (input_location, |
2538 | "specs unknown %% command after %td characters", |
2539 | p1 - buffer); |
2540 | } |
2541 | |
2542 | /* Find the colon that should end the suffix. */ |
2543 | p1 = p; |
2544 | while (*p1 && *p1 != ':' && *p1 != '\n') |
2545 | p1++; |
2546 | |
2547 | /* The colon shouldn't be missing. */ |
2548 | if (*p1 != ':') |
2549 | fatal_error (input_location, |
2550 | "specs file malformed after %td characters", |
2551 | p1 - buffer); |
2552 | |
2553 | /* Skip back over trailing whitespace. */ |
2554 | p2 = p1; |
2555 | while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t')) |
2556 | p2--; |
2557 | |
2558 | /* Copy the suffix to a string. */ |
2559 | suffix = save_string (p, p2 - p); |
2560 | /* Find the next line. */ |
2561 | p = skip_whitespace (p: p1 + 1); |
2562 | if (p[1] == 0) |
2563 | fatal_error (input_location, |
2564 | "specs file malformed after %td characters", |
2565 | p - buffer); |
2566 | |
2567 | p1 = p; |
2568 | /* Find next blank line or end of string. */ |
2569 | while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0'))) |
2570 | p1++; |
2571 | |
2572 | /* Specs end at the blank line and do not include the newline. */ |
2573 | spec = save_string (p, p1 - p); |
2574 | p = p1; |
2575 | |
2576 | /* Delete backslash-newline sequences from the spec. */ |
2577 | in = spec; |
2578 | out = spec; |
2579 | while (*in != 0) |
2580 | { |
2581 | if (in[0] == '\\' && in[1] == '\n') |
2582 | in += 2; |
2583 | else if (in[0] == '#') |
2584 | while (*in && *in != '\n') |
2585 | in++; |
2586 | |
2587 | else |
2588 | *out++ = *in++; |
2589 | } |
2590 | *out = 0; |
2591 | |
2592 | if (suffix[0] == '*') |
2593 | { |
2594 | if (! strcmp (s1: suffix, s2: "*link_command")) |
2595 | link_command_spec = spec; |
2596 | else |
2597 | { |
2598 | set_spec (name: suffix + 1, spec, user_p); |
2599 | free (ptr: spec); |
2600 | } |
2601 | } |
2602 | else |
2603 | { |
2604 | /* Add this pair to the vector. */ |
2605 | compilers |
2606 | = XRESIZEVEC (struct compiler, compilers, n_compilers + 2); |
2607 | |
2608 | compilers[n_compilers].suffix = suffix; |
2609 | compilers[n_compilers].spec = spec; |
2610 | n_compilers++; |
2611 | memset (s: &compilers[n_compilers], c: 0, n: sizeof compilers[n_compilers]); |
2612 | } |
2613 | |
2614 | if (*suffix == 0) |
2615 | link_command_spec = spec; |
2616 | } |
2617 | |
2618 | if (link_command_spec == 0) |
2619 | fatal_error (input_location, "spec file has no spec for linking"); |
2620 | |
2621 | XDELETEVEC (buffer); |
2622 | } |
2623 | |
2624 | /* Record the names of temporary files we tell compilers to write, |
2625 | and delete them at the end of the run. */ |
2626 | |
2627 | /* This is the common prefix we use to make temp file names. |
2628 | It is chosen once for each run of this program. |
2629 | It is substituted into a spec by %g or %j. |
2630 | Thus, all temp file names contain this prefix. |
2631 | In practice, all temp file names start with this prefix. |
2632 | |
2633 | This prefix comes from the envvar TMPDIR if it is defined; |
2634 | otherwise, from the P_tmpdir macro if that is defined; |
2635 | otherwise, in /usr/tmp or /tmp; |
2636 | or finally the current directory if all else fails. */ |
2637 | |
2638 | static const char *temp_filename; |
2639 | |
2640 | /* Length of the prefix. */ |
2641 | |
2642 | static int temp_filename_length; |
2643 | |
2644 | /* Define the list of temporary files to delete. */ |
2645 | |
2646 | struct temp_file |
2647 | { |
2648 | const char *name; |
2649 | struct temp_file *next; |
2650 | }; |
2651 | |
2652 | /* Queue of files to delete on success or failure of compilation. */ |
2653 | static struct temp_file *always_delete_queue; |
2654 | /* Queue of files to delete on failure of compilation. */ |
2655 | static struct temp_file *failure_delete_queue; |
2656 | |
2657 | /* Record FILENAME as a file to be deleted automatically. |
2658 | ALWAYS_DELETE nonzero means delete it if all compilation succeeds; |
2659 | otherwise delete it in any case. |
2660 | FAIL_DELETE nonzero means delete it if a compilation step fails; |
2661 | otherwise delete it in any case. */ |
2662 | |
2663 | void |
2664 | record_temp_file (const char *filename, int always_delete, int fail_delete) |
2665 | { |
2666 | char *const name = xstrdup (filename); |
2667 | |
2668 | if (always_delete) |
2669 | { |
2670 | struct temp_file *temp; |
2671 | for (temp = always_delete_queue; temp; temp = temp->next) |
2672 | if (! filename_cmp (s1: name, s2: temp->name)) |
2673 | { |
2674 | free (ptr: name); |
2675 | goto already1; |
2676 | } |
2677 | |
2678 | temp = XNEW (struct temp_file); |
2679 | temp->next = always_delete_queue; |
2680 | temp->name = name; |
2681 | always_delete_queue = temp; |
2682 | |
2683 | already1:; |
2684 | } |
2685 | |
2686 | if (fail_delete) |
2687 | { |
2688 | struct temp_file *temp; |
2689 | for (temp = failure_delete_queue; temp; temp = temp->next) |
2690 | if (! filename_cmp (s1: name, s2: temp->name)) |
2691 | { |
2692 | free (ptr: name); |
2693 | goto already2; |
2694 | } |
2695 | |
2696 | temp = XNEW (struct temp_file); |
2697 | temp->next = failure_delete_queue; |
2698 | temp->name = name; |
2699 | failure_delete_queue = temp; |
2700 | |
2701 | already2:; |
2702 | } |
2703 | } |
2704 | |
2705 | /* Delete all the temporary files whose names we previously recorded. */ |
2706 | |
2707 | #ifndef DELETE_IF_ORDINARY |
2708 | #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \ |
2709 | do \ |
2710 | { \ |
2711 | if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \ |
2712 | if (unlink (NAME) < 0) \ |
2713 | if (VERBOSE_FLAG) \ |
2714 | error ("%s: %m", (NAME)); \ |
2715 | } while (0) |
2716 | #endif |
2717 | |
2718 | static void |
2719 | delete_if_ordinary (const char *name) |
2720 | { |
2721 | struct stat st; |
2722 | #ifdef DEBUG |
2723 | int i, c; |
2724 | |
2725 | printf ("Delete %s? (y or n) ", name); |
2726 | fflush (stdout); |
2727 | i = getchar (); |
2728 | if (i != '\n') |
2729 | while ((c = getchar ()) != '\n' && c != EOF) |
2730 | ; |
2731 | |
2732 | if (i == 'y' || i == 'Y') |
2733 | #endif /* DEBUG */ |
2734 | DELETE_IF_ORDINARY (name, st, verbose_flag); |
2735 | } |
2736 | |
2737 | static void |
2738 | delete_temp_files (void) |
2739 | { |
2740 | struct temp_file *temp; |
2741 | |
2742 | for (temp = always_delete_queue; temp; temp = temp->next) |
2743 | delete_if_ordinary (name: temp->name); |
2744 | always_delete_queue = 0; |
2745 | } |
2746 | |
2747 | /* Delete all the files to be deleted on error. */ |
2748 | |
2749 | static void |
2750 | delete_failure_queue (void) |
2751 | { |
2752 | struct temp_file *temp; |
2753 | |
2754 | for (temp = failure_delete_queue; temp; temp = temp->next) |
2755 | delete_if_ordinary (name: temp->name); |
2756 | } |
2757 | |
2758 | static void |
2759 | clear_failure_queue (void) |
2760 | { |
2761 | failure_delete_queue = 0; |
2762 | } |
2763 | |
2764 | /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK |
2765 | returns non-NULL. |
2766 | If DO_MULTI is true iterate over the paths twice, first with multilib |
2767 | suffix then without, otherwise iterate over the paths once without |
2768 | adding a multilib suffix. When DO_MULTI is true, some attempt is made |
2769 | to avoid visiting the same path twice, but we could do better. For |
2770 | instance, /usr/lib/../lib is considered different from /usr/lib. |
2771 | At least EXTRA_SPACE chars past the end of the path passed to |
2772 | CALLBACK are available for use by the callback. |
2773 | CALLBACK_INFO allows extra parameters to be passed to CALLBACK. |
2774 | |
2775 | Returns the value returned by CALLBACK. */ |
2776 | |
2777 | static void * |
2778 | for_each_path (const struct path_prefix *paths, |
2779 | bool do_multi, |
2780 | size_t extra_space, |
2781 | void *(*callback) (char *, void *), |
2782 | void *callback_info) |
2783 | { |
2784 | struct prefix_list *pl; |
2785 | const char *multi_dir = NULL; |
2786 | const char *multi_os_dir = NULL; |
2787 | const char *multiarch_suffix = NULL; |
2788 | const char *multi_suffix; |
2789 | const char *just_multi_suffix; |
2790 | char *path = NULL; |
2791 | void *ret = NULL; |
2792 | bool skip_multi_dir = false; |
2793 | bool skip_multi_os_dir = false; |
2794 | |
2795 | multi_suffix = machine_suffix; |
2796 | just_multi_suffix = just_machine_suffix; |
2797 | if (do_multi && multilib_dir && strcmp (s1: multilib_dir, s2: ".") != 0) |
2798 | { |
2799 | multi_dir = concat (multilib_dir, dir_separator_str, NULL); |
2800 | multi_suffix = concat (multi_suffix, multi_dir, NULL); |
2801 | just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL); |
2802 | } |
2803 | if (do_multi && multilib_os_dir && strcmp (s1: multilib_os_dir, s2: ".") != 0) |
2804 | multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL); |
2805 | if (multiarch_dir) |
2806 | multiarch_suffix = concat (multiarch_dir, dir_separator_str, NULL); |
2807 | |
2808 | while (1) |
2809 | { |
2810 | size_t multi_dir_len = 0; |
2811 | size_t multi_os_dir_len = 0; |
2812 | size_t multiarch_len = 0; |
2813 | size_t suffix_len; |
2814 | size_t just_suffix_len; |
2815 | size_t len; |
2816 | |
2817 | if (multi_dir) |
2818 | multi_dir_len = strlen (s: multi_dir); |
2819 | if (multi_os_dir) |
2820 | multi_os_dir_len = strlen (s: multi_os_dir); |
2821 | if (multiarch_suffix) |
2822 | multiarch_len = strlen (s: multiarch_suffix); |
2823 | suffix_len = strlen (s: multi_suffix); |
2824 | just_suffix_len = strlen (s: just_multi_suffix); |
2825 | |
2826 | if (path == NULL) |
2827 | { |
2828 | len = paths->max_len + extra_space + 1; |
2829 | len += MAX (MAX (suffix_len, multi_os_dir_len), multiarch_len); |
2830 | path = XNEWVEC (char, len); |
2831 | } |
2832 | |
2833 | for (pl = paths->plist; pl != 0; pl = pl->next) |
2834 | { |
2835 | len = strlen (s: pl->prefix); |
2836 | memcpy (dest: path, src: pl->prefix, n: len); |
2837 | |
2838 | /* Look first in MACHINE/VERSION subdirectory. */ |
2839 | if (!skip_multi_dir) |
2840 | { |
2841 | memcpy (dest: path + len, src: multi_suffix, n: suffix_len + 1); |
2842 | ret = callback (path, callback_info); |
2843 | if (ret) |
2844 | break; |
2845 | } |
2846 | |
2847 | /* Some paths are tried with just the machine (ie. target) |
2848 | subdir. This is used for finding as, ld, etc. */ |
2849 | if (!skip_multi_dir |
2850 | && pl->require_machine_suffix == 2) |
2851 | { |
2852 | memcpy (dest: path + len, src: just_multi_suffix, n: just_suffix_len + 1); |
2853 | ret = callback (path, callback_info); |
2854 | if (ret) |
2855 | break; |
2856 | } |
2857 | |
2858 | /* Now try the multiarch path. */ |
2859 | if (!skip_multi_dir |
2860 | && !pl->require_machine_suffix && multiarch_dir) |
2861 | { |
2862 | memcpy (dest: path + len, src: multiarch_suffix, n: multiarch_len + 1); |
2863 | ret = callback (path, callback_info); |
2864 | if (ret) |
2865 | break; |
2866 | } |
2867 | |
2868 | /* Now try the base path. */ |
2869 | if (!pl->require_machine_suffix |
2870 | && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir)) |
2871 | { |
2872 | const char *this_multi; |
2873 | size_t this_multi_len; |
2874 | |
2875 | if (pl->os_multilib) |
2876 | { |
2877 | this_multi = multi_os_dir; |
2878 | this_multi_len = multi_os_dir_len; |
2879 | } |
2880 | else |
2881 | { |
2882 | this_multi = multi_dir; |
2883 | this_multi_len = multi_dir_len; |
2884 | } |
2885 | |
2886 | if (this_multi_len) |
2887 | memcpy (dest: path + len, src: this_multi, n: this_multi_len + 1); |
2888 | else |
2889 | path[len] = '\0'; |
2890 | |
2891 | ret = callback (path, callback_info); |
2892 | if (ret) |
2893 | break; |
2894 | } |
2895 | } |
2896 | if (pl) |
2897 | break; |
2898 | |
2899 | if (multi_dir == NULL && multi_os_dir == NULL) |
2900 | break; |
2901 | |
2902 | /* Run through the paths again, this time without multilibs. |
2903 | Don't repeat any we have already seen. */ |
2904 | if (multi_dir) |
2905 | { |
2906 | free (CONST_CAST (char *, multi_dir)); |
2907 | multi_dir = NULL; |
2908 | free (CONST_CAST (char *, multi_suffix)); |
2909 | multi_suffix = machine_suffix; |
2910 | free (CONST_CAST (char *, just_multi_suffix)); |
2911 | just_multi_suffix = just_machine_suffix; |
2912 | } |
2913 | else |
2914 | skip_multi_dir = true; |
2915 | if (multi_os_dir) |
2916 | { |
2917 | free (CONST_CAST (char *, multi_os_dir)); |
2918 | multi_os_dir = NULL; |
2919 | } |
2920 | else |
2921 | skip_multi_os_dir = true; |
2922 | } |
2923 | |
2924 | if (multi_dir) |
2925 | { |
2926 | free (CONST_CAST (char *, multi_dir)); |
2927 | free (CONST_CAST (char *, multi_suffix)); |
2928 | free (CONST_CAST (char *, just_multi_suffix)); |
2929 | } |
2930 | if (multi_os_dir) |
2931 | free (CONST_CAST (char *, multi_os_dir)); |
2932 | if (ret != path) |
2933 | free (ptr: path); |
2934 | return ret; |
2935 | } |
2936 | |
2937 | /* Callback for build_search_list. Adds path to obstack being built. */ |
2938 | |
2939 | struct add_to_obstack_info { |
2940 | struct obstack *ob; |
2941 | bool check_dir; |
2942 | bool first_time; |
2943 | }; |
2944 | |
2945 | static void * |
2946 | add_to_obstack (char *path, void *data) |
2947 | { |
2948 | struct add_to_obstack_info *info = (struct add_to_obstack_info *) data; |
2949 | |
2950 | if (info->check_dir && !is_directory (path)) |
2951 | return NULL; |
2952 | |
2953 | if (!info->first_time) |
2954 | obstack_1grow (info->ob, PATH_SEPARATOR); |
2955 | |
2956 | obstack_grow (info->ob, path, strlen (path)); |
2957 | |
2958 | info->first_time = false; |
2959 | return NULL; |
2960 | } |
2961 | |
2962 | /* Add or change the value of an environment variable, outputting the |
2963 | change to standard error if in verbose mode. */ |
2964 | static void |
2965 | xputenv (const char *string) |
2966 | { |
2967 | env.xput (string); |
2968 | } |
2969 | |
2970 | /* Build a list of search directories from PATHS. |
2971 | PREFIX is a string to prepend to the list. |
2972 | If CHECK_DIR_P is true we ensure the directory exists. |
2973 | If DO_MULTI is true, multilib paths are output first, then |
2974 | non-multilib paths. |
2975 | This is used mostly by putenv_from_prefixes so we use `collect_obstack'. |
2976 | It is also used by the --print-search-dirs flag. */ |
2977 | |
2978 | static char * |
2979 | build_search_list (const struct path_prefix *paths, const char *prefix, |
2980 | bool check_dir, bool do_multi) |
2981 | { |
2982 | struct add_to_obstack_info info; |
2983 | |
2984 | info.ob = &collect_obstack; |
2985 | info.check_dir = check_dir; |
2986 | info.first_time = true; |
2987 | |
2988 | obstack_grow (&collect_obstack, prefix, strlen (prefix)); |
2989 | obstack_1grow (&collect_obstack, '='); |
2990 | |
2991 | for_each_path (paths, do_multi, extra_space: 0, callback: add_to_obstack, callback_info: &info); |
2992 | |
2993 | obstack_1grow (&collect_obstack, '\0'); |
2994 | return XOBFINISH (&collect_obstack, char *); |
2995 | } |
2996 | |
2997 | /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables |
2998 | for collect. */ |
2999 | |
3000 | static void |
3001 | putenv_from_prefixes (const struct path_prefix *paths, const char *env_var, |
3002 | bool do_multi) |
3003 | { |
3004 | xputenv (string: build_search_list (paths, prefix: env_var, check_dir: true, do_multi)); |
3005 | } |
3006 | |
3007 | /* Check whether NAME can be accessed in MODE. This is like access, |
3008 | except that it never considers directories to be executable. */ |
3009 | |
3010 | static int |
3011 | access_check (const char *name, int mode) |
3012 | { |
3013 | if (mode == X_OK) |
3014 | { |
3015 | struct stat st; |
3016 | |
3017 | if (stat (file: name, buf: &st) < 0 |
3018 | || S_ISDIR (st.st_mode)) |
3019 | return -1; |
3020 | } |
3021 | |
3022 | return access (name: name, type: mode); |
3023 | } |
3024 | |
3025 | /* Callback for find_a_file. Appends the file name to the directory |
3026 | path. If the resulting file exists in the right mode, return the |
3027 | full pathname to the file. */ |
3028 | |
3029 | struct file_at_path_info { |
3030 | const char *name; |
3031 | const char *suffix; |
3032 | int name_len; |
3033 | int suffix_len; |
3034 | int mode; |
3035 | }; |
3036 | |
3037 | static void * |
3038 | file_at_path (char *path, void *data) |
3039 | { |
3040 | struct file_at_path_info *info = (struct file_at_path_info *) data; |
3041 | size_t len = strlen (s: path); |
3042 | |
3043 | memcpy (dest: path + len, src: info->name, n: info->name_len); |
3044 | len += info->name_len; |
3045 | |
3046 | /* Some systems have a suffix for executable files. |
3047 | So try appending that first. */ |
3048 | if (info->suffix_len) |
3049 | { |
3050 | memcpy (dest: path + len, src: info->suffix, n: info->suffix_len + 1); |
3051 | if (access_check (name: path, mode: info->mode) == 0) |
3052 | return path; |
3053 | } |
3054 | |
3055 | path[len] = '\0'; |
3056 | if (access_check (name: path, mode: info->mode) == 0) |
3057 | return path; |
3058 | |
3059 | return NULL; |
3060 | } |
3061 | |
3062 | /* Search for NAME using the prefix list PREFIXES. MODE is passed to |
3063 | access to check permissions. If DO_MULTI is true, search multilib |
3064 | paths then non-multilib paths, otherwise do not search multilib paths. |
3065 | Return 0 if not found, otherwise return its name, allocated with malloc. */ |
3066 | |
3067 | static char * |
3068 | find_a_file (const struct path_prefix *pprefix, const char *name, int mode, |
3069 | bool do_multi) |
3070 | { |
3071 | struct file_at_path_info info; |
3072 | |
3073 | /* Find the filename in question (special case for absolute paths). */ |
3074 | |
3075 | if (IS_ABSOLUTE_PATH (name)) |
3076 | { |
3077 | if (access (name: name, type: mode) == 0) |
3078 | return xstrdup (name); |
3079 | |
3080 | return NULL; |
3081 | } |
3082 | |
3083 | info.name = name; |
3084 | info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : ""; |
3085 | info.name_len = strlen (s: info.name); |
3086 | info.suffix_len = strlen (s: info.suffix); |
3087 | info.mode = mode; |
3088 | |
3089 | return (char*) for_each_path (paths: pprefix, do_multi, |
3090 | extra_space: info.name_len + info.suffix_len, |
3091 | callback: file_at_path, callback_info: &info); |
3092 | } |
3093 | |
3094 | /* Specialization of find_a_file for programs that also takes into account |
3095 | configure-specified default programs. */ |
3096 | |
3097 | static char* |
3098 | find_a_program (const char *name) |
3099 | { |
3100 | /* Do not search if default matches query. */ |
3101 | |
3102 | #ifdef DEFAULT_ASSEMBLER |
3103 | if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, X_OK) == 0) |
3104 | return xstrdup (DEFAULT_ASSEMBLER); |
3105 | #endif |
3106 | |
3107 | #ifdef DEFAULT_LINKER |
3108 | if (! strcmp (name, "ld") && access (DEFAULT_LINKER, X_OK) == 0) |
3109 | return xstrdup (DEFAULT_LINKER); |
3110 | #endif |
3111 | |
3112 | #ifdef DEFAULT_DSYMUTIL |
3113 | if (! strcmp (name, "dsymutil") && access (DEFAULT_DSYMUTIL, X_OK) == 0) |
3114 | return xstrdup (DEFAULT_DSYMUTIL); |
3115 | #endif |
3116 | |
3117 | return find_a_file (pprefix: &exec_prefixes, name, X_OK, do_multi: false); |
3118 | } |
3119 | |
3120 | /* Ranking of prefixes in the sort list. -B prefixes are put before |
3121 | all others. */ |
3122 | |
3123 | enum path_prefix_priority |
3124 | { |
3125 | PREFIX_PRIORITY_B_OPT, |
3126 | PREFIX_PRIORITY_LAST |
3127 | }; |
3128 | |
3129 | /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending |
3130 | order according to PRIORITY. Within each PRIORITY, new entries are |
3131 | appended. |
3132 | |
3133 | If WARN is nonzero, we will warn if no file is found |
3134 | through this prefix. WARN should point to an int |
3135 | which will be set to 1 if this entry is used. |
3136 | |
3137 | COMPONENT is the value to be passed to update_path. |
3138 | |
3139 | REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without |
3140 | the complete value of machine_suffix. |
3141 | 2 means try both machine_suffix and just_machine_suffix. */ |
3142 | |
3143 | static void |
3144 | add_prefix (struct path_prefix *pprefix, const char *prefix, |
3145 | const char *component, /* enum prefix_priority */ int priority, |
3146 | int require_machine_suffix, int os_multilib) |
3147 | { |
3148 | struct prefix_list *pl, **prev; |
3149 | int len; |
3150 | |
3151 | for (prev = &pprefix->plist; |
3152 | (*prev) != NULL && (*prev)->priority <= priority; |
3153 | prev = &(*prev)->next) |
3154 | ; |
3155 | |
3156 | /* Keep track of the longest prefix. */ |
3157 | |
3158 | prefix = update_path (path: prefix, key: component); |
3159 | len = strlen (s: prefix); |
3160 | if (len > pprefix->max_len) |
3161 | pprefix->max_len = len; |
3162 | |
3163 | pl = XNEW (struct prefix_list); |
3164 | pl->prefix = prefix; |
3165 | pl->require_machine_suffix = require_machine_suffix; |
3166 | pl->priority = priority; |
3167 | pl->os_multilib = os_multilib; |
3168 | |
3169 | /* Insert after PREV. */ |
3170 | pl->next = (*prev); |
3171 | (*prev) = pl; |
3172 | } |
3173 | |
3174 | /* Same as add_prefix, but prepending target_system_root to prefix. */ |
3175 | /* The target_system_root prefix has been relocated by gcc_exec_prefix. */ |
3176 | static void |
3177 | add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix, |
3178 | const char *component, |
3179 | /* enum prefix_priority */ int priority, |
3180 | int require_machine_suffix, int os_multilib) |
3181 | { |
3182 | if (!IS_ABSOLUTE_PATH (prefix)) |
3183 | fatal_error (input_location, "system path %qs is not absolute", prefix); |
3184 | |
3185 | if (target_system_root) |
3186 | { |
3187 | char *sysroot_no_trailing_dir_separator = xstrdup (target_system_root); |
3188 | size_t sysroot_len = strlen (s: target_system_root); |
3189 | |
3190 | if (sysroot_len > 0 |
3191 | && target_system_root[sysroot_len - 1] == DIR_SEPARATOR) |
3192 | sysroot_no_trailing_dir_separator[sysroot_len - 1] = '\0'; |
3193 | |
3194 | if (target_sysroot_suffix) |
3195 | prefix = concat (sysroot_no_trailing_dir_separator, |
3196 | target_sysroot_suffix, prefix, NULL); |
3197 | else |
3198 | prefix = concat (sysroot_no_trailing_dir_separator, prefix, NULL); |
3199 | |
3200 | free (ptr: sysroot_no_trailing_dir_separator); |
3201 | |
3202 | /* We have to override this because GCC's notion of sysroot |
3203 | moves along with GCC. */ |
3204 | component = "GCC"; |
3205 | } |
3206 | |
3207 | add_prefix (pprefix, prefix, component, priority, |
3208 | require_machine_suffix, os_multilib); |
3209 | } |
3210 | |
3211 | /* Same as add_prefix, but prepending target_sysroot_hdrs_suffix to prefix. */ |
3212 | |
3213 | static void |
3214 | add_sysrooted_hdrs_prefix (struct path_prefix *pprefix, const char *prefix, |
3215 | const char *component, |
3216 | /* enum prefix_priority */ int priority, |
3217 | int require_machine_suffix, int os_multilib) |
3218 | { |
3219 | if (!IS_ABSOLUTE_PATH (prefix)) |
3220 | fatal_error (input_location, "system path %qs is not absolute", prefix); |
3221 | |
3222 | if (target_system_root) |
3223 | { |
3224 | char *sysroot_no_trailing_dir_separator = xstrdup (target_system_root); |
3225 | size_t sysroot_len = strlen (s: target_system_root); |
3226 | |
3227 | if (sysroot_len > 0 |
3228 | && target_system_root[sysroot_len - 1] == DIR_SEPARATOR) |
3229 | sysroot_no_trailing_dir_separator[sysroot_len - 1] = '\0'; |
3230 | |
3231 | if (target_sysroot_hdrs_suffix) |
3232 | prefix = concat (sysroot_no_trailing_dir_separator, |
3233 | target_sysroot_hdrs_suffix, prefix, NULL); |
3234 | else |
3235 | prefix = concat (sysroot_no_trailing_dir_separator, prefix, NULL); |
3236 | |
3237 | free (ptr: sysroot_no_trailing_dir_separator); |
3238 | |
3239 | /* We have to override this because GCC's notion of sysroot |
3240 | moves along with GCC. */ |
3241 | component = "GCC"; |
3242 | } |
3243 | |
3244 | add_prefix (pprefix, prefix, component, priority, |
3245 | require_machine_suffix, os_multilib); |
3246 | } |
3247 | |
3248 | |
3249 | /* Execute the command specified by the arguments on the current line of spec. |
3250 | When using pipes, this includes several piped-together commands |
3251 | with `|' between them. |
3252 | |
3253 | Return 0 if successful, -1 if failed. */ |
3254 | |
3255 | static int |
3256 | execute (void) |
3257 | { |
3258 | int i; |
3259 | int n_commands; /* # of command. */ |
3260 | char *string; |
3261 | struct pex_obj *pex; |
3262 | struct command |
3263 | { |
3264 | const char *prog; /* program name. */ |
3265 | const char **argv; /* vector of args. */ |
3266 | }; |
3267 | const char *arg; |
3268 | |
3269 | struct command *commands; /* each command buffer with above info. */ |
3270 | |
3271 | gcc_assert (!processing_spec_function); |
3272 | |
3273 | if (wrapper_string) |
3274 | { |
3275 | string = find_a_program (name: argbuf[0]); |
3276 | if (string) |
3277 | argbuf[0] = string; |
3278 | insert_wrapper (wrapper_string); |
3279 | } |
3280 | |
3281 | /* Count # of piped commands. */ |
3282 | for (n_commands = 1, i = 0; argbuf.iterate (ix: i, ptr: &arg); i++) |
3283 | if (strcmp (s1: arg, s2: "|") == 0) |
3284 | n_commands++; |
3285 | |
3286 | /* Get storage for each command. */ |
3287 | commands = XALLOCAVEC (struct command, n_commands); |
3288 | |
3289 | /* Split argbuf into its separate piped processes, |
3290 | and record info about each one. |
3291 | Also search for the programs that are to be run. */ |
3292 | |
3293 | argbuf.safe_push (obj: 0); |
3294 | |
3295 | commands[0].prog = argbuf[0]; /* first command. */ |
3296 | commands[0].argv = argbuf.address (); |
3297 | |
3298 | if (!wrapper_string) |
3299 | { |
3300 | string = find_a_program(name: commands[0].prog); |
3301 | if (string) |
3302 | commands[0].argv[0] = string; |
3303 | } |
3304 | |
3305 | for (n_commands = 1, i = 0; argbuf.iterate (ix: i, ptr: &arg); i++) |
3306 | if (arg && strcmp (s1: arg, s2: "|") == 0) |
3307 | { /* each command. */ |
3308 | #if defined (__MSDOS__) || defined (OS2) || defined (VMS) |
3309 | fatal_error (input_location, "%<-pipe%> not supported"); |
3310 | #endif |
3311 | argbuf[i] = 0; /* Termination of command args. */ |
3312 | commands[n_commands].prog = argbuf[i + 1]; |
3313 | commands[n_commands].argv |
3314 | = &(argbuf.address ())[i + 1]; |
3315 | string = find_a_program(name: commands[n_commands].prog); |
3316 | if (string) |
3317 | commands[n_commands].argv[0] = string; |
3318 | n_commands++; |
3319 | } |
3320 | |
3321 | /* If -v, print what we are about to do, and maybe query. */ |
3322 | |
3323 | if (verbose_flag) |
3324 | { |
3325 | /* For help listings, put a blank line between sub-processes. */ |
3326 | if (print_help_list) |
3327 | fputc (c: '\n', stderr); |
3328 | |
3329 | /* Print each piped command as a separate line. */ |
3330 | for (i = 0; i < n_commands; i++) |
3331 | { |
3332 | const char *const *j; |
3333 | |
3334 | if (verbose_only_flag) |
3335 | { |
3336 | for (j = commands[i].argv; *j; j++) |
3337 | { |
3338 | const char *p; |
3339 | for (p = *j; *p; ++p) |
3340 | if (!ISALNUM ((unsigned char) *p) |
3341 | && *p != '_' && *p != '/' && *p != '-' && *p != '.') |
3342 | break; |
3343 | if (*p || !*j) |
3344 | { |
3345 | fprintf (stderr, format: " \""); |
3346 | for (p = *j; *p; ++p) |
3347 | { |
3348 | if (*p == '"' || *p == '\\' || *p == '$') |
3349 | fputc (c: '\\', stderr); |
3350 | fputc (c: *p, stderr); |
3351 | } |
3352 | fputc (c: '"', stderr); |
3353 | } |
3354 | /* If it's empty, print "". */ |
3355 | else if (!**j) |
3356 | fprintf (stderr, format: " \"\""); |
3357 | else |
3358 | fprintf (stderr, format: " %s", *j); |
3359 | } |
3360 | } |
3361 | else |
3362 | for (j = commands[i].argv; *j; j++) |
3363 | /* If it's empty, print "". */ |
3364 | if (!**j) |
3365 | fprintf (stderr, format: " \"\""); |
3366 | else |
3367 | fprintf (stderr, format: " %s", *j); |
3368 | |
3369 | /* Print a pipe symbol after all but the last command. */ |
3370 | if (i + 1 != n_commands) |
3371 | fprintf (stderr, format: " |"); |
3372 | fprintf (stderr, format: "\n"); |
3373 | } |
3374 | fflush (stderr); |
3375 | if (verbose_only_flag != 0) |
3376 | { |
3377 | /* verbose_only_flag should act as if the spec was |
3378 | executed, so increment execution_count before |
3379 | returning. This prevents spurious warnings about |
3380 | unused linker input files, etc. */ |
3381 | execution_count++; |
3382 | return 0; |
3383 | } |
3384 | #ifdef DEBUG |
3385 | fnotice (stderr, "\nGo ahead? (y or n) "); |
3386 | fflush (stderr); |
3387 | i = getchar (); |
3388 | if (i != '\n') |
3389 | while (getchar () != '\n') |
3390 | ; |
3391 | |
3392 | if (i != 'y' && i != 'Y') |
3393 | return 0; |
3394 | #endif /* DEBUG */ |
3395 | } |
3396 | |
3397 | #ifdef ENABLE_VALGRIND_CHECKING |
3398 | /* Run the each command through valgrind. To simplify prepending the |
3399 | path to valgrind and the option "-q" (for quiet operation unless |
3400 | something triggers), we allocate a separate argv array. */ |
3401 | |
3402 | for (i = 0; i < n_commands; i++) |
3403 | { |
3404 | const char **argv; |
3405 | int argc; |
3406 | int j; |
3407 | |
3408 | for (argc = 0; commands[i].argv[argc] != NULL; argc++) |
3409 | ; |
3410 | |
3411 | argv = XALLOCAVEC (const char *, argc + 3); |
3412 | |
3413 | argv[0] = VALGRIND_PATH; |
3414 | argv[1] = "-q"; |
3415 | for (j = 2; j < argc + 2; j++) |
3416 | argv[j] = commands[i].argv[j - 2]; |
3417 | argv[j] = NULL; |
3418 | |
3419 | commands[i].argv = argv; |
3420 | commands[i].prog = argv[0]; |
3421 | } |
3422 | #endif |
3423 | |
3424 | /* Run each piped subprocess. */ |
3425 | |
3426 | pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file) |
3427 | ? PEX_RECORD_TIMES : 0), |
3428 | pname: progname, tempbase: temp_filename); |
3429 | if (pex == NULL) |
3430 | fatal_error (input_location, "%<pex_init%> failed: %m"); |
3431 | |
3432 | for (i = 0; i < n_commands; i++) |
3433 | { |
3434 | const char *errmsg; |
3435 | int err; |
3436 | const char *string = commands[i].argv[0]; |
3437 | |
3438 | errmsg = pex_run (obj: pex, |
3439 | flags: ((i + 1 == n_commands ? PEX_LAST : 0) |
3440 | | (string == commands[i].prog ? PEX_SEARCH : 0)), |
3441 | executable: string, CONST_CAST (char **, commands[i].argv), |
3442 | NULL, NULL, err: &err); |
3443 | if (errmsg != NULL) |
3444 | { |
3445 | errno = err; |
3446 | fatal_error (input_location, |
3447 | err ? G_("cannot execute %qs: %s: %m") |
3448 | : G_("cannot execute %qs: %s"), |
3449 | string, errmsg); |
3450 | } |
3451 | |
3452 | if (i && string != commands[i].prog) |
3453 | free (CONST_CAST (char *, string)); |
3454 | } |
3455 | |
3456 | execution_count++; |
3457 | |
3458 | /* Wait for all the subprocesses to finish. */ |
3459 | |
3460 | { |
3461 | int *statuses; |
3462 | struct pex_time *times = NULL; |
3463 | int ret_code = 0; |
3464 | |
3465 | statuses = XALLOCAVEC (int, n_commands); |
3466 | if (!pex_get_status (pex, count: n_commands, vector: statuses)) |
3467 | fatal_error (input_location, "failed to get exit status: %m"); |
3468 | |
3469 | if (report_times || report_times_to_file) |
3470 | { |
3471 | times = XALLOCAVEC (struct pex_time, n_commands); |
3472 | if (!pex_get_times (pex, count: n_commands, vector: times)) |
3473 | fatal_error (input_location, "failed to get process times: %m"); |
3474 | } |
3475 | |
3476 | pex_free (pex); |
3477 | |
3478 | for (i = 0; i < n_commands; ++i) |
3479 | { |
3480 | int status = statuses[i]; |
3481 | |
3482 | if (WIFSIGNALED (status)) |
3483 | switch (WTERMSIG (status)) |
3484 | { |
3485 | case SIGINT: |
3486 | case SIGTERM: |
3487 | /* SIGQUIT and SIGKILL are not available on MinGW. */ |
3488 | #ifdef SIGQUIT |
3489 | case SIGQUIT: |
3490 | #endif |
3491 | #ifdef SIGKILL |
3492 | case SIGKILL: |
3493 | #endif |
3494 | /* The user (or environment) did something to the |
3495 | inferior. Making this an ICE confuses the user into |
3496 | thinking there's a compiler bug. Much more likely is |
3497 | the user or OOM killer nuked it. */ |
3498 | fatal_error (input_location, |
3499 | "%s signal terminated program %s", |
3500 | strsignal (WTERMSIG (status)), |
3501 | commands[i].prog); |
3502 | break; |
3503 | |
3504 | #ifdef SIGPIPE |
3505 | case SIGPIPE: |
3506 | /* SIGPIPE is a special case. It happens in -pipe mode |
3507 | when the compiler dies before the preprocessor is |
3508 | done, or the assembler dies before the compiler is |
3509 | done. There's generally been an error already, and |
3510 | this is just fallout. So don't generate another |
3511 | error unless we would otherwise have succeeded. */ |
3512 | if (signal_count || greatest_status >= MIN_FATAL_STATUS) |
3513 | { |
3514 | signal_count++; |
3515 | ret_code = -1; |
3516 | break; |
3517 | } |
3518 | #endif |
3519 | /* FALLTHROUGH */ |
3520 | |
3521 | default: |
3522 | /* The inferior failed to catch the signal. */ |
3523 | internal_error_no_backtrace ("%s signal terminated program %s", |
3524 | strsignal (WTERMSIG (status)), |
3525 | commands[i].prog); |
3526 | } |
3527 | else if (WIFEXITED (status) |
3528 | && WEXITSTATUS (status) >= MIN_FATAL_STATUS) |
3529 | { |
3530 | /* For ICEs in cc1, cc1obj, cc1plus see if it is |
3531 | reproducible or not. */ |
3532 | const char *p; |
3533 | if (flag_report_bug |
3534 | && WEXITSTATUS (status) == ICE_EXIT_CODE |
3535 | && i == 0 |
3536 | && (p = strrchr (s: commands[0].argv[0], DIR_SEPARATOR)) |
3537 | && startswith (str: p + 1, prefix: "cc1")) |
3538 | try_generate_repro (argv: commands[0].argv); |
3539 | if (WEXITSTATUS (status) > greatest_status) |
3540 | greatest_status = WEXITSTATUS (status); |
3541 | ret_code = -1; |
3542 | } |
3543 | |
3544 | if (report_times || report_times_to_file) |
3545 | { |
3546 | struct pex_time *pt = ×[i]; |
3547 | double ut, st; |
3548 | |
3549 | ut = ((double) pt->user_seconds |
3550 | + (double) pt->user_microseconds / 1.0e6); |
3551 | st = ((double) pt->system_seconds |
3552 | + (double) pt->system_microseconds / 1.0e6); |
3553 | |
3554 | if (ut + st != 0) |
3555 | { |
3556 | if (report_times) |
3557 | fnotice (stderr, "# %s %.2f %.2f\n", |
3558 | commands[i].prog, ut, st); |
3559 | |
3560 | if (report_times_to_file) |
3561 | { |
3562 | int c = 0; |
3563 | const char *const *j; |
3564 | |
3565 | fprintf (stream: report_times_to_file, format: "%g %g", ut, st); |
3566 | |
3567 | for (j = &commands[i].prog; *j; j = &commands[i].argv[++c]) |
3568 | { |
3569 | const char *p; |
3570 | for (p = *j; *p; ++p) |
3571 | if (*p == '"' || *p == '\\' || *p == '$' |
3572 | || ISSPACE (*p)) |
3573 | break; |
3574 | |
3575 | if (*p) |
3576 | { |
3577 | fprintf (stream: report_times_to_file, format: " \""); |
3578 | for (p = *j; *p; ++p) |
3579 | { |
3580 | if (*p == '"' || *p == '\\' || *p == '$') |
3581 | fputc (c: '\\', stream: report_times_to_file); |
3582 | fputc (c: *p, stream: report_times_to_file); |
3583 | } |
3584 | fputc (c: '"', stream: report_times_to_file); |
3585 | } |
3586 | else |
3587 | fprintf (stream: report_times_to_file, format: " %s", *j); |
3588 | } |
3589 | |
3590 | fputc (c: '\n', stream: report_times_to_file); |
3591 | } |
3592 | } |
3593 | } |
3594 | } |
3595 | |
3596 | if (commands[0].argv[0] != commands[0].prog) |
3597 | free (CONST_CAST (char *, commands[0].argv[0])); |
3598 | |
3599 | return ret_code; |
3600 | } |
3601 | } |
3602 | |
3603 | static struct switchstr *switches; |
3604 | |
3605 | static int n_switches; |
3606 | |
3607 | static int n_switches_alloc; |
3608 | |
3609 | /* Set to zero if -fcompare-debug is disabled, positive if it's |
3610 | enabled and we're running the first compilation, negative if it's |
3611 | enabled and we're running the second compilation. For most of the |
3612 | time, it's in the range -1..1, but it can be temporarily set to 2 |
3613 | or 3 to indicate that the -fcompare-debug flags didn't come from |
3614 | the command-line, but rather from the GCC_COMPARE_DEBUG environment |
3615 | variable, until a synthesized -fcompare-debug flag is added to the |
3616 | command line. */ |
3617 | int compare_debug; |
3618 | |
3619 | /* Set to nonzero if we've seen the -fcompare-debug-second flag. */ |
3620 | int compare_debug_second; |
3621 | |
3622 | /* Set to the flags that should be passed to the second compilation in |
3623 | a -fcompare-debug compilation. */ |
3624 | const char *compare_debug_opt; |
3625 | |
3626 | static struct switchstr *switches_debug_check[2]; |
3627 | |
3628 | static int n_switches_debug_check[2]; |
3629 | |
3630 | static int n_switches_alloc_debug_check[2]; |
3631 | |
3632 | static char *debug_check_temp_file[2]; |
3633 | |
3634 | /* Language is one of three things: |
3635 | |
3636 | 1) The name of a real programming language. |
3637 | 2) NULL, indicating that no one has figured out |
3638 | what it is yet. |
3639 | 3) '*', indicating that the file should be passed |
3640 | to the linker. */ |
3641 | struct infile |
3642 | { |
3643 | const char *name; |
3644 | const char *language; |
3645 | struct compiler *incompiler; |
3646 | bool compiled; |
3647 | bool preprocessed; |
3648 | }; |
3649 | |
3650 | /* Also a vector of input files specified. */ |
3651 | |
3652 | static struct infile *infiles; |
3653 | |
3654 | int n_infiles; |
3655 | |
3656 | static int n_infiles_alloc; |
3657 | |
3658 | /* True if undefined environment variables encountered during spec processing |
3659 | are ok to ignore, typically when we're running for --help or --version. */ |
3660 | |
3661 | static bool spec_undefvar_allowed; |
3662 | |
3663 | /* True if multiple input files are being compiled to a single |
3664 | assembly file. */ |
3665 | |
3666 | static bool combine_inputs; |
3667 | |
3668 | /* This counts the number of libraries added by lang_specific_driver, so that |
3669 | we can tell if there were any user supplied any files or libraries. */ |
3670 | |
3671 | static int added_libraries; |
3672 | |
3673 | /* And a vector of corresponding output files is made up later. */ |
3674 | |
3675 | const char **outfiles; |
3676 | |
3677 | #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX) |
3678 | |
3679 | /* Convert NAME to a new name if it is the standard suffix. DO_EXE |
3680 | is true if we should look for an executable suffix. DO_OBJ |
3681 | is true if we should look for an object suffix. */ |
3682 | |
3683 | static const char * |
3684 | convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED, |
3685 | int do_obj ATTRIBUTE_UNUSED) |
3686 | { |
3687 | #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) |
3688 | int i; |
3689 | #endif |
3690 | int len; |
3691 | |
3692 | if (name == NULL) |
3693 | return NULL; |
3694 | |
3695 | len = strlen (name); |
3696 | |
3697 | #ifdef HAVE_TARGET_OBJECT_SUFFIX |
3698 | /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */ |
3699 | if (do_obj && len > 2 |
3700 | && name[len - 2] == '.' |
3701 | && name[len - 1] == 'o') |
3702 | { |
3703 | obstack_grow (&obstack, name, len - 2); |
3704 | obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); |
3705 | name = XOBFINISH (&obstack, const char *); |
3706 | } |
3707 | #endif |
3708 | |
3709 | #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) |
3710 | /* If there is no filetype, make it the executable suffix (which includes |
3711 | the "."). But don't get confused if we have just "-o". */ |
3712 | if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || not_actual_file_p (name)) |
3713 | return name; |
3714 | |
3715 | for (i = len - 1; i >= 0; i--) |
3716 | if (IS_DIR_SEPARATOR (name[i])) |
3717 | break; |
3718 | |
3719 | for (i++; i < len; i++) |
3720 | if (name[i] == '.') |
3721 | return name; |
3722 | |
3723 | obstack_grow (&obstack, name, len); |
3724 | obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX, |
3725 | strlen (TARGET_EXECUTABLE_SUFFIX)); |
3726 | name = XOBFINISH (&obstack, const char *); |
3727 | #endif |
3728 | |
3729 | return name; |
3730 | } |
3731 | #endif |
3732 | |
3733 | /* Display the command line switches accepted by gcc. */ |
3734 | static void |
3735 | display_help (void) |
3736 | { |
3737 | printf (_("Usage: %s [options] file...\n"), progname); |
3738 | fputs (_("Options:\n"), stdout); |
3739 | |
3740 | fputs (_(" -pass-exit-codes Exit with highest error code from a phase.\n"), stdout); |
3741 | fputs (_(" --help Display this information.\n"), stdout); |
3742 | fputs (_(" --target-help Display target specific command line options " |
3743 | "(including assembler and linker options).\n"), stdout); |
3744 | fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...].\n"), stdout); |
3745 | fputs (_(" Display specific types of command line options.\n"), stdout); |
3746 | if (! verbose_flag) |
3747 | fputs (_(" (Use '-v --help' to display command line options of sub-processes).\n"), stdout); |
3748 | fputs (_(" --version Display compiler version information.\n"), stdout); |
3749 | fputs (_(" -dumpspecs Display all of the built in spec strings.\n"), stdout); |
3750 | fputs (_(" -dumpversion Display the version of the compiler.\n"), stdout); |
3751 | fputs (_(" -dumpmachine Display the compiler's target processor.\n"), stdout); |
3752 | fputs (_(" -foffload=<targets> Specify offloading targets.\n"), stdout); |
3753 | fputs (_(" -print-search-dirs Display the directories in the compiler's search path.\n"), stdout); |
3754 | fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library.\n"), stdout); |
3755 | fputs (_(" -print-file-name=<lib> Display the full path to library <lib>.\n"), stdout); |
3756 | fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>.\n"), stdout); |
3757 | fputs (_("\ |
3758 | -print-multiarch Display the target's normalized GNU triplet, used as\n\ |
3759 | a component in the library path.\n"), stdout); |
3760 | fputs (_(" -print-multi-directory Display the root directory for versions of libgcc.\n"), stdout); |
3761 | fputs (_("\ |
3762 | -print-multi-lib Display the mapping between command line options and\n\ |
3763 | multiple library search directories.\n"), stdout); |
3764 | fputs (_(" -print-multi-os-directory Display the relative path to OS libraries.\n"), stdout); |
3765 | fputs (_(" -print-sysroot Display the target libraries directory.\n"), stdout); |
3766 | fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers.\n"), stdout); |
3767 | fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler.\n"), stdout); |
3768 | fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor.\n"), stdout); |
3769 | fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker.\n"), stdout); |
3770 | fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler.\n"), stdout); |
3771 | fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor.\n"), stdout); |
3772 | fputs (_(" -Xlinker <arg> Pass <arg> on to the linker.\n"), stdout); |
3773 | fputs (_(" -save-temps Do not delete intermediate files.\n"), stdout); |
3774 | fputs (_(" -save-temps=<arg> Do not delete intermediate files.\n"), stdout); |
3775 | fputs (_("\ |
3776 | -no-canonical-prefixes Do not canonicalize paths when building relative\n\ |
3777 | prefixes to other gcc components.\n"), stdout); |
3778 | fputs (_(" -pipe Use pipes rather than intermediate files.\n"), stdout); |
3779 | fputs (_(" -time Time the execution of each subprocess.\n"), stdout); |
3780 | fputs (_(" -specs=<file> Override built-in specs with the contents of <file>.\n"), stdout); |
3781 | fputs (_(" -std=<standard> Assume that the input sources are for <standard>.\n"), stdout); |
3782 | fputs (_("\ |
3783 | --sysroot=<directory> Use <directory> as the root directory for headers\n\ |
3784 | and libraries.\n"), stdout); |
3785 | fputs (_(" -B <directory> Add <directory> to the compiler's search paths.\n"), stdout); |
3786 | fputs (_(" -v Display the programs invoked by the compiler.\n"), stdout); |
3787 | fputs (_(" -### Like -v but options quoted and commands not executed.\n"), stdout); |
3788 | fputs (_(" -E Preprocess only; do not compile, assemble or link.\n"), stdout); |
3789 | fputs (_(" -S Compile only; do not assemble or link.\n"), stdout); |
3790 | fputs (_(" -c Compile and assemble, but do not link.\n"), stdout); |
3791 | fputs (_(" -o <file> Place the output into <file>.\n"), stdout); |
3792 | fputs (_(" -pie Create a dynamically linked position independent\n\ |
3793 | executable.\n"), stdout); |
3794 | fputs (_(" -shared Create a shared library.\n"), stdout); |
3795 | fputs (_("\ |
3796 | -x <language> Specify the language of the following input files.\n\ |
3797 | Permissible languages include: c c++ assembler none\n\ |
3798 | 'none' means revert to the default behavior of\n\ |
3799 | guessing the language based on the file's extension.\n\ |
3800 | "), stdout); |
3801 | |
3802 | printf (_("\ |
3803 | \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\ |
3804 | passed on to the various sub-processes invoked by %s. In order to pass\n\ |
3805 | other options on to these processes the -W<letter> options must be used.\n\ |
3806 | "), progname); |
3807 | |
3808 | /* The rest of the options are displayed by invocations of the various |
3809 | sub-processes. */ |
3810 | } |
3811 | |
3812 | static void |
3813 | add_preprocessor_option (const char *option, int len) |
3814 | { |
3815 | preprocessor_options.safe_push (obj: save_string (option, len)); |
3816 | } |
3817 | |
3818 | static void |
3819 | add_assembler_option (const char *option, int len) |
3820 | { |
3821 | assembler_options.safe_push (obj: save_string (option, len)); |
3822 | } |
3823 | |
3824 | static void |
3825 | add_linker_option (const char *option, int len) |
3826 | { |
3827 | linker_options.safe_push (obj: save_string (option, len)); |
3828 | } |
3829 | |
3830 | /* Allocate space for an input file in infiles. */ |
3831 | |
3832 | static void |
3833 | alloc_infile (void) |
3834 | { |
3835 | if (n_infiles_alloc == 0) |
3836 | { |
3837 | n_infiles_alloc = 16; |
3838 | infiles = XNEWVEC (struct infile, n_infiles_alloc); |
3839 | } |
3840 | else if (n_infiles_alloc == n_infiles) |
3841 | { |
3842 | n_infiles_alloc *= 2; |
3843 | infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc); |
3844 | } |
3845 | } |
3846 | |
3847 | /* Store an input file with the given NAME and LANGUAGE in |
3848 | infiles. */ |
3849 | |
3850 | static void |
3851 | add_infile (const char *name, const char *language) |
3852 | { |
3853 | alloc_infile (); |
3854 | infiles[n_infiles].name = name; |
3855 | infiles[n_infiles++].language = language; |
3856 | } |
3857 | |
3858 | /* Allocate space for a switch in switches. */ |
3859 | |
3860 | static void |
3861 | alloc_switch (void) |
3862 | { |
3863 | if (n_switches_alloc == 0) |
3864 | { |
3865 | n_switches_alloc = 16; |
3866 | switches = XNEWVEC (struct switchstr, n_switches_alloc); |
3867 | } |
3868 | else if (n_switches_alloc == n_switches) |
3869 | { |
3870 | n_switches_alloc *= 2; |
3871 | switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc); |
3872 | } |
3873 | } |
3874 | |
3875 | /* Save an option OPT with N_ARGS arguments in array ARGS, marking it |
3876 | as validated if VALIDATED and KNOWN if it is an internal switch. */ |
3877 | |
3878 | static void |
3879 | save_switch (const char *opt, size_t n_args, const char *const *args, |
3880 | bool validated, bool known) |
3881 | { |
3882 | alloc_switch (); |
3883 | switches[n_switches].part1 = opt + 1; |
3884 | if (n_args == 0) |
3885 | switches[n_switches].args = 0; |
3886 | else |
3887 | { |
3888 | switches[n_switches].args = XNEWVEC (const char *, n_args + 1); |
3889 | memcpy (dest: switches[n_switches].args, src: args, n: n_args * sizeof (const char *)); |
3890 | switches[n_switches].args[n_args] = NULL; |
3891 | } |
3892 | |
3893 | switches[n_switches].live_cond = 0; |
3894 | switches[n_switches].validated = validated; |
3895 | switches[n_switches].known = known; |
3896 | switches[n_switches].ordering = 0; |
3897 | n_switches++; |
3898 | } |
3899 | |
3900 | /* Set the SOURCE_DATE_EPOCH environment variable to the current time if it is |
3901 | not set already. */ |
3902 | |
3903 | static void |
3904 | set_source_date_epoch_envvar () |
3905 | { |
3906 | /* Array size is 21 = ceil(log_10(2^64)) + 1 to hold string representations |
3907 | of 64 bit integers. */ |
3908 | char source_date_epoch[21]; |
3909 | time_t tt; |
3910 | |
3911 | errno = 0; |
3912 | tt = time (NULL); |
3913 | if (tt < (time_t) 0 || errno != 0) |
3914 | tt = (time_t) 0; |
3915 | |
3916 | snprintf (s: source_date_epoch, maxlen: 21, format: "%llu", (unsigned long long) tt); |
3917 | /* Using setenv instead of xputenv because we want the variable to remain |
3918 | after finalizing so that it's still set in the second run when using |
3919 | -fcompare-debug. */ |
3920 | setenv (name: "SOURCE_DATE_EPOCH", value: source_date_epoch, replace: 0); |
3921 | } |
3922 | |
3923 | /* Handle an option DECODED that is unknown to the option-processing |
3924 | machinery. */ |
3925 | |
3926 | static bool |
3927 | driver_unknown_option_callback (const struct cl_decoded_option *decoded) |
3928 | { |
3929 | const char *opt = decoded->arg; |
3930 | if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-' |
3931 | && !(decoded->errors & CL_ERR_NEGATIVE)) |
3932 | { |
3933 | /* Leave unknown -Wno-* options for the compiler proper, to be |
3934 | diagnosed only if there are warnings. */ |
3935 | save_switch (opt: decoded->canonical_option[0], |
3936 | n_args: decoded->canonical_option_num_elements - 1, |
3937 | args: &decoded->canonical_option[1], validated: false, known: true); |
3938 | return false; |
3939 | } |
3940 | if (decoded->opt_index == OPT_SPECIAL_unknown) |
3941 | { |
3942 | /* Give it a chance to define it a spec file. */ |
3943 | save_switch (opt: decoded->canonical_option[0], |
3944 | n_args: decoded->canonical_option_num_elements - 1, |
3945 | args: &decoded->canonical_option[1], validated: false, known: false); |
3946 | return false; |
3947 | } |
3948 | else |
3949 | return true; |
3950 | } |
3951 | |
3952 | /* Handle an option DECODED that is not marked as CL_DRIVER. |
3953 | LANG_MASK will always be CL_DRIVER. */ |
3954 | |
3955 | static void |
3956 | driver_wrong_lang_callback (const struct cl_decoded_option *decoded, |
3957 | unsigned int lang_mask ATTRIBUTE_UNUSED) |
3958 | { |
3959 | /* At this point, non-driver options are accepted (and expected to |
3960 | be passed down by specs) unless marked to be rejected by the |
3961 | driver. Options to be rejected by the driver but accepted by the |
3962 | compilers proper are treated just like completely unknown |
3963 | options. */ |
3964 | const struct cl_option *option = &cl_options[decoded->opt_index]; |
3965 | |
3966 | if (option->cl_reject_driver) |
3967 | error ("unrecognized command-line option %qs", |
3968 | decoded->orig_option_with_args_text); |
3969 | else |
3970 | save_switch (opt: decoded->canonical_option[0], |
3971 | n_args: decoded->canonical_option_num_elements - 1, |
3972 | args: &decoded->canonical_option[1], validated: false, known: true); |
3973 | } |
3974 | |
3975 | static const char *spec_lang = 0; |
3976 | static int last_language_n_infiles; |
3977 | |
3978 | |
3979 | /* Check that GCC is configured to support the offload target. */ |
3980 | |
3981 | static bool |
3982 | check_offload_target_name (const char *target, ptrdiff_t len) |
3983 | { |
3984 | const char *n, *c = OFFLOAD_TARGETS; |
3985 | while (c) |
3986 | { |
3987 | n = strchr (s: c, c: ','); |
3988 | if (n == NULL) |
3989 | n = strchr (s: c, c: '\0'); |
3990 | if (len == n - c && strncmp (s1: target, s2: c, n: n - c) == 0) |
3991 | break; |
3992 | c = *n ? n + 1 : NULL; |
3993 | } |
3994 | if (!c) |
3995 | { |
3996 | auto_vec<const char*> candidates; |
3997 | size_t olen = strlen (OFFLOAD_TARGETS) + 1; |
3998 | char *cand = XALLOCAVEC (char, olen); |
3999 | memcpy (dest: cand, OFFLOAD_TARGETS, n: olen); |
4000 | for (c = strtok (s: cand, delim: ","); c; c = strtok (NULL, delim: ",")) |
4001 | candidates.safe_push (obj: c); |
4002 | candidates.safe_push (obj: "default"); |
4003 | candidates.safe_push (obj: "disable"); |
4004 | |
4005 | char *target2 = XALLOCAVEC (char, len + 1); |
4006 | memcpy (dest: target2, src: target, n: len); |
4007 | target2[len] = '\0'; |
4008 | |
4009 | error ("GCC is not configured to support %qs as %<-foffload=%> argument", |
4010 | target2); |
4011 | |
4012 | char *s; |
4013 | const char *hint = candidates_list_and_hint (arg: target2, str&: s, candidates); |
4014 | if (hint) |
4015 | inform (UNKNOWN_LOCATION, |
4016 | "valid %<-foffload=%> arguments are: %s; " |
4017 | "did you mean %qs?", s, hint); |
4018 | else |
4019 | inform (UNKNOWN_LOCATION, "valid %<-foffload=%> arguments are: %s", s); |
4020 | XDELETEVEC (s); |
4021 | return false; |
4022 | } |
4023 | return true; |
4024 | } |
4025 | |
4026 | /* Sanity check for -foffload-options. */ |
4027 | |
4028 | static void |
4029 | check_foffload_target_names (const char *arg) |
4030 | { |
4031 | const char *cur, *next, *end; |
4032 | /* If option argument starts with '-' then no target is specified and we |
4033 | do not need to parse it. */ |
4034 | if (arg[0] == '-') |
4035 | return; |
4036 | end = strchr (s: arg, c: '='); |
4037 | if (end == NULL) |
4038 | { |
4039 | error ("%<=%>options missing after %<-foffload-options=%>target"); |
4040 | return; |
4041 | } |
4042 | |
4043 | cur = arg; |
4044 | while (cur < end) |
4045 | { |
4046 | next = strchr (s: cur, c: ','); |
4047 | if (next == NULL) |
4048 | next = end; |
4049 | next = (next > end) ? end : next; |
4050 | |
4051 | /* Retain non-supported targets after printing an error as those will not |
4052 | be processed; each enabled target only processes its triplet. */ |
4053 | check_offload_target_name (target: cur, len: next - cur); |
4054 | cur = next + 1; |
4055 | } |
4056 | } |
4057 | |
4058 | /* Parse -foffload option argument. */ |
4059 | |
4060 | static void |
4061 | handle_foffload_option (const char *arg) |
4062 | { |
4063 | const char *c, *cur, *n, *next, *end; |
4064 | char *target; |
4065 | |
4066 | /* If option argument starts with '-' then no target is specified and we |
4067 | do not need to parse it. */ |
4068 | if (arg[0] == '-') |
4069 | return; |
4070 | |
4071 | end = strchr (s: arg, c: '='); |
4072 | if (end == NULL) |
4073 | end = strchr (s: arg, c: '\0'); |
4074 | cur = arg; |
4075 | |
4076 | while (cur < end) |
4077 | { |
4078 | next = strchr (s: cur, c: ','); |
4079 | if (next == NULL) |
4080 | next = end; |
4081 | next = (next > end) ? end : next; |
4082 | |
4083 | target = XNEWVEC (char, next - cur + 1); |
4084 | memcpy (dest: target, src: cur, n: next - cur); |
4085 | target[next - cur] = '\0'; |
4086 | |
4087 | /* Reset offloading list and continue. */ |
4088 | if (strcmp (s1: target, s2: "default") == 0) |
4089 | { |
4090 | free (ptr: offload_targets); |
4091 | offload_targets = NULL; |
4092 | goto next_item; |
4093 | } |
4094 | |
4095 | /* If 'disable' is passed to the option, clean the list of |
4096 | offload targets and return, even if more targets follow. |
4097 | Likewise if GCC is not configured to support that offload target. */ |
4098 | if (strcmp (s1: target, s2: "disable") == 0 |
4099 | || !check_offload_target_name (target, len: next - cur)) |
4100 | { |
4101 | free (ptr: offload_targets); |
4102 | offload_targets = xstrdup (""); |
4103 | return; |
4104 | } |
4105 | |
4106 | if (!offload_targets) |
4107 | { |
4108 | offload_targets = target; |
4109 | target = NULL; |
4110 | } |
4111 | else |
4112 | { |
4113 | /* Check that the target hasn't already presented in the list. */ |
4114 | c = offload_targets; |
4115 | do |
4116 | { |
4117 | n = strchr (s: c, c: ':'); |
4118 | if (n == NULL) |
4119 | n = strchr (s: c, c: '\0'); |
4120 | |
4121 | if (next - cur == n - c && strncmp (s1: c, s2: target, n: n - c) == 0) |
4122 | break; |
4123 | |
4124 | c = n + 1; |
4125 | } |
4126 | while (*n); |
4127 | |
4128 | /* If duplicate is not found, append the target to the list. */ |
4129 | if (c > n) |
4130 | { |
4131 | size_t offload_targets_len = strlen (s: offload_targets); |
4132 | offload_targets |
4133 | = XRESIZEVEC (char, offload_targets, |
4134 | offload_targets_len + 1 + next - cur + 1); |
4135 | offload_targets[offload_targets_len++] = ':'; |
4136 | memcpy (dest: offload_targets + offload_targets_len, src: target, n: next - cur + 1); |
4137 | } |
4138 | } |
4139 | next_item: |
4140 | cur = next + 1; |
4141 | XDELETEVEC (target); |
4142 | } |
4143 | } |
4144 | |
4145 | /* Forward certain options to offloading compilation. */ |
4146 | |
4147 | static void |
4148 | forward_offload_option (size_t opt_index, const char *arg, bool validated) |
4149 | { |
4150 | switch (opt_index) |
4151 | { |
4152 | case OPT_l: |
4153 | /* Use a '_GCC_' prefix and standard name ('-l_GCC_m' irrespective of the |
4154 | host's 'MATH_LIBRARY', for example), so that the 'mkoffload's can tell |
4155 | this has been synthesized here, and translate/drop as necessary. */ |
4156 | /* Note that certain libraries ('-lc', '-lgcc', '-lgomp', for example) |
4157 | are injected by default in offloading compilation, and therefore not |
4158 | forwarded here. */ |
4159 | /* GCC libraries. */ |
4160 | if (/* '-lgfortran' */ strcmp (s1: arg, s2: "gfortran") == 0 |
4161 | || /* '-lstdc++' */ strcmp (s1: arg, s2: "stdc++") == 0) |
4162 | save_switch (opt: concat ("-foffload-options=-l_GCC_", arg, NULL), |
4163 | n_args: 0, NULL, validated, known: true); |
4164 | /* Other libraries. */ |
4165 | else |
4166 | { |
4167 | /* The case will need special consideration where on the host |
4168 | '!need_math', but for offloading compilation still need |
4169 | '-foffload-options=-l_GCC_m'. The problem is that we don't get |
4170 | here anything like '-lm', because it's not synthesized in |
4171 | 'gcc/fortran/gfortranspec.cc:lang_specific_driver', for example. |
4172 | Generally synthesizing '-foffload-options=-l_GCC_m' etc. in the |
4173 | language specific drivers is non-trivial, needs very careful |
4174 | review of their options handling. However, this issue is not |
4175 | actually relevant for the current set of supported host/offloading |
4176 | configurations. */ |
4177 | int need_math = (MATH_LIBRARY[0] != '\0'); |
4178 | if (/* '-lm' */ (need_math && strcmp (s1: arg, MATH_LIBRARY) == 0)) |
4179 | save_switch (opt: "-foffload-options=-l_GCC_m", |
4180 | n_args: 0, NULL, validated, known: true); |
4181 | } |
4182 | break; |
4183 | default: |
4184 | gcc_unreachable (); |
4185 | } |
4186 | } |
4187 | |
4188 | /* Handle a driver option; arguments and return value as for |
4189 | handle_option. */ |
4190 | |
4191 | static bool |
4192 | driver_handle_option (struct gcc_options *opts, |
4193 | struct gcc_options *opts_set, |
4194 | const struct cl_decoded_option *decoded, |
4195 | unsigned int lang_mask ATTRIBUTE_UNUSED, int kind, |
4196 | location_t loc, |
4197 | const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED, |
4198 | diagnostic_context *dc, |
4199 | void (*) (void)) |
4200 | { |
4201 | size_t opt_index = decoded->opt_index; |
4202 | const char *arg = decoded->arg; |
4203 | const char *compare_debug_replacement_opt; |
4204 | int value = decoded->value; |
4205 | bool validated = false; |
4206 | bool do_save = true; |
4207 | |
4208 | gcc_assert (opts == &global_options); |
4209 | gcc_assert (opts_set == &global_options_set); |
4210 | gcc_assert (kind == DK_UNSPECIFIED); |
4211 | gcc_assert (loc == UNKNOWN_LOCATION); |
4212 | gcc_assert (dc == global_dc); |
4213 | |
4214 | switch (opt_index) |
4215 | { |
4216 | case OPT_dumpspecs: |
4217 | { |
4218 | struct spec_list *sl; |
4219 | init_spec (); |
4220 | for (sl = specs; sl; sl = sl->next) |
4221 | printf (format: "*%s:\n%s\n\n", sl->name, *(sl->ptr_spec)); |
4222 | if (link_command_spec) |
4223 | printf (format: "*link_command:\n%s\n\n", link_command_spec); |
4224 | exit (status: 0); |
4225 | } |
4226 | |
4227 | case OPT_dumpversion: |
4228 | printf (format: "%s\n", spec_version); |
4229 | exit (status: 0); |
4230 | |
4231 | case OPT_dumpmachine: |
4232 | printf (format: "%s\n", spec_machine); |
4233 | exit (status: 0); |
4234 | |
4235 | case OPT_dumpfullversion: |
4236 | printf ("%s\n", BASEVER); |
4237 | exit (status: 0); |
4238 | |
4239 | case OPT__version: |
4240 | print_version = 1; |
4241 | |
4242 | /* CPP driver cannot obtain switch from cc1_options. */ |
4243 | if (is_cpp_driver) |
4244 | add_preprocessor_option (option: "--version", len: strlen (s: "--version")); |
4245 | add_assembler_option (option: "--version", len: strlen (s: "--version")); |
4246 | add_linker_option (option: "--version", len: strlen (s: "--version")); |
4247 | break; |
4248 | |
4249 | case OPT__completion_: |
4250 | validated = true; |
4251 | completion = decoded->arg; |
4252 | break; |
4253 | |
4254 | case OPT__help: |
4255 | print_help_list = 1; |
4256 | |
4257 | /* CPP driver cannot obtain switch from cc1_options. */ |
4258 | if (is_cpp_driver) |
4259 | add_preprocessor_option (option: "--help", len: 6); |
4260 | add_assembler_option (option: "--help", len: 6); |
4261 | add_linker_option (option: "--help", len: 6); |
4262 | break; |
4263 | |
4264 | case OPT__help_: |
4265 | print_subprocess_help = 2; |
4266 | break; |
4267 | |
4268 | case OPT__target_help: |
4269 | print_subprocess_help = 1; |
4270 | |
4271 | /* CPP driver cannot obtain switch from cc1_options. */ |
4272 | if (is_cpp_driver) |
4273 | add_preprocessor_option (option: "--target-help", len: 13); |
4274 | add_assembler_option (option: "--target-help", len: 13); |
4275 | add_linker_option (option: "--target-help", len: 13); |
4276 | break; |
4277 | |
4278 | case OPT__no_sysroot_suffix: |
4279 | case OPT_pass_exit_codes: |
4280 | case OPT_print_search_dirs: |
4281 | case OPT_print_file_name_: |
4282 | case OPT_print_prog_name_: |
4283 | case OPT_print_multi_lib: |
4284 | case OPT_print_multi_directory: |
4285 | case OPT_print_sysroot: |
4286 | case OPT_print_multi_os_directory: |
4287 | case OPT_print_multiarch: |
4288 | case OPT_print_sysroot_headers_suffix: |
4289 | case OPT_time: |
4290 | case OPT_wrapper: |
4291 | /* These options set the variables specified in common.opt |
4292 | automatically, and do not need to be saved for spec |
4293 | processing. */ |
4294 | do_save = false; |
4295 | break; |
4296 | |
4297 | case OPT_print_libgcc_file_name: |
4298 | print_file_name = "libgcc.a"; |
4299 | do_save = false; |
4300 | break; |
4301 | |
4302 | case OPT_fuse_ld_bfd: |
4303 | use_ld = ".bfd"; |
4304 | break; |
4305 | |
4306 | case OPT_fuse_ld_gold: |
4307 | use_ld = ".gold"; |
4308 | break; |
4309 | |
4310 | case OPT_fuse_ld_mold: |
4311 | use_ld = ".mold"; |
4312 | break; |
4313 | |
4314 | case OPT_fcompare_debug_second: |
4315 | compare_debug_second = 1; |
4316 | break; |
4317 | |
4318 | case OPT_fcompare_debug: |
4319 | switch (value) |
4320 | { |
4321 | case 0: |
4322 | compare_debug_replacement_opt = "-fcompare-debug="; |
4323 | arg = ""; |
4324 | goto compare_debug_with_arg; |
4325 | |
4326 | case 1: |
4327 | compare_debug_replacement_opt = "-fcompare-debug=-gtoggle"; |
4328 | arg = "-gtoggle"; |
4329 | goto compare_debug_with_arg; |
4330 | |
4331 | default: |
4332 | gcc_unreachable (); |
4333 | } |
4334 | break; |
4335 | |
4336 | case OPT_fcompare_debug_: |
4337 | compare_debug_replacement_opt = decoded->canonical_option[0]; |
4338 | compare_debug_with_arg: |
4339 | gcc_assert (decoded->canonical_option_num_elements == 1); |
4340 | gcc_assert (arg != NULL); |
4341 | if (*arg) |
4342 | compare_debug = 1; |
4343 | else |
4344 | compare_debug = -1; |
4345 | if (compare_debug < 0) |
4346 | compare_debug_opt = NULL; |
4347 | else |
4348 | compare_debug_opt = arg; |
4349 | save_switch (opt: compare_debug_replacement_opt, n_args: 0, NULL, validated, known: true); |
4350 | set_source_date_epoch_envvar (); |
4351 | return true; |
4352 | |
4353 | case OPT_fdiagnostics_color_: |
4354 | diagnostic_color_init (context: dc, value); |
4355 | break; |
4356 | |
4357 | case OPT_fdiagnostics_urls_: |
4358 | diagnostic_urls_init (context: dc, value); |
4359 | break; |
4360 | |
4361 | case OPT_fdiagnostics_show_highlight_colors: |
4362 | dc->set_show_highlight_colors (value); |
4363 | break; |
4364 | |
4365 | case OPT_fdiagnostics_format_: |
4366 | { |
4367 | const char *basename = (opts->x_dump_base_name ? opts->x_dump_base_name |
4368 | : opts->x_main_input_basename); |
4369 | gcc_assert (dc); |
4370 | diagnostic_output_format_init (*dc, |
4371 | main_input_filename_: opts->x_main_input_filename, base_file_name: basename, |
4372 | (enum diagnostics_output_format)value, |
4373 | json_formatting: opts->x_flag_diagnostics_json_formatting); |
4374 | break; |
4375 | } |
4376 | |
4377 | case OPT_fdiagnostics_add_output_: |
4378 | handle_OPT_fdiagnostics_add_output_ (opts: *opts, dc&: *dc, arg, loc); |
4379 | break; |
4380 | |
4381 | case OPT_fdiagnostics_set_output_: |
4382 | handle_OPT_fdiagnostics_set_output_ (opts: *opts, dc&: *dc, arg, loc); |
4383 | break; |
4384 | |
4385 | case OPT_fdiagnostics_text_art_charset_: |
4386 | dc->set_text_art_charset ((enum diagnostic_text_art_charset)value); |
4387 | break; |
4388 | |
4389 | case OPT_Wa_: |
4390 | { |
4391 | int prev, j; |
4392 | /* Pass the rest of this option to the assembler. */ |
4393 | |
4394 | /* Split the argument at commas. */ |
4395 | prev = 0; |
4396 | for (j = 0; arg[j]; j++) |
4397 | if (arg[j] == ',') |
4398 | { |
4399 | add_assembler_option (option: arg + prev, len: j - prev); |
4400 | prev = j + 1; |
4401 | } |
4402 | |
4403 | /* Record the part after the last comma. */ |
4404 | add_assembler_option (option: arg + prev, len: j - prev); |
4405 | } |
4406 | do_save = false; |
4407 | break; |
4408 | |
4409 | case OPT_Wp_: |
4410 | { |
4411 | int prev, j; |
4412 | /* Pass the rest of this option to the preprocessor. */ |
4413 | |
4414 | /* Split the argument at commas. */ |
4415 | prev = 0; |
4416 | for (j = 0; arg[j]; j++) |
4417 | if (arg[j] == ',') |
4418 | { |
4419 | add_preprocessor_option (option: arg + prev, len: j - prev); |
4420 | prev = j + 1; |
4421 | } |
4422 | |
4423 | /* Record the part after the last comma. */ |
4424 | add_preprocessor_option (option: arg + prev, len: j - prev); |
4425 | } |
4426 | do_save = false; |
4427 | break; |
4428 | |
4429 | case OPT_Wl_: |
4430 | { |
4431 | int prev, j; |
4432 | /* Split the argument at commas. */ |
4433 | prev = 0; |
4434 | for (j = 0; arg[j]; j++) |
4435 | if (arg[j] == ',') |
4436 | { |
4437 | add_infile (name: save_string (arg + prev, j - prev), language: "*"); |
4438 | prev = j + 1; |
4439 | } |
4440 | /* Record the part after the last comma. */ |
4441 | add_infile (name: arg + prev, language: "*"); |
4442 | if (strcmp (s1: arg, s2: "-z,lazy") == 0 || strcmp (s1: arg, s2: "-z,norelro") == 0) |
4443 | avoid_linker_hardening_p = true; |
4444 | } |
4445 | do_save = false; |
4446 | break; |
4447 | |
4448 | case OPT_z: |
4449 | if (strcmp (s1: arg, s2: "lazy") == 0 || strcmp (s1: arg, s2: "norelro") == 0) |
4450 | avoid_linker_hardening_p = true; |
4451 | break; |
4452 | |
4453 | case OPT_Xlinker: |
4454 | add_infile (name: arg, language: "*"); |
4455 | do_save = false; |
4456 | break; |
4457 | |
4458 | case OPT_Xpreprocessor: |
4459 | add_preprocessor_option (option: arg, len: strlen (s: arg)); |
4460 | do_save = false; |
4461 | break; |
4462 | |
4463 | case OPT_Xassembler: |
4464 | add_assembler_option (option: arg, len: strlen (s: arg)); |
4465 | do_save = false; |
4466 | break; |
4467 | |
4468 | case OPT_l: |
4469 | /* POSIX allows separation of -l and the lib arg; canonicalize |
4470 | by concatenating -l with its arg */ |
4471 | add_infile (name: concat ("-l", arg, NULL), language: "*"); |
4472 | |
4473 | /* Forward to offloading compilation '-l[...]' flags for standard, |
4474 | well-known libraries. */ |
4475 | /* Doing this processing here means that we don't get to see libraries |
4476 | injected via specs, such as '-lquadmath' injected via |
4477 | '[build]/[target]/libgfortran/libgfortran.spec'. However, this issue |
4478 | is not actually relevant for the current set of host/offloading |
4479 | configurations. */ |
4480 | if (ENABLE_OFFLOADING) |
4481 | forward_offload_option (opt_index, arg, validated); |
4482 | |
4483 | do_save = false; |
4484 | break; |
4485 | |
4486 | case OPT_L: |
4487 | /* Similarly, canonicalize -L for linkers that may not accept |
4488 | separate arguments. */ |
4489 | save_switch (opt: concat ("-L", arg, NULL), n_args: 0, NULL, validated, known: true); |
4490 | return true; |
4491 | |
4492 | case OPT_F: |
4493 | /* Likewise -F. */ |
4494 | save_switch (opt: concat ("-F", arg, NULL), n_args: 0, NULL, validated, known: true); |
4495 | return true; |
4496 | |
4497 | case OPT_save_temps: |
4498 | if (!save_temps_flag) |
4499 | save_temps_flag = SAVE_TEMPS_DUMP; |
4500 | validated = true; |
4501 | break; |
4502 | |
4503 | case OPT_save_temps_: |
4504 | if (strcmp (s1: arg, s2: "cwd") == 0) |
4505 | save_temps_flag = SAVE_TEMPS_CWD; |
4506 | else if (strcmp (s1: arg, s2: "obj") == 0 |
4507 | || strcmp (s1: arg, s2: "object") == 0) |
4508 | save_temps_flag = SAVE_TEMPS_OBJ; |
4509 | else |
4510 | fatal_error (input_location, "%qs is an unknown %<-save-temps%> option", |
4511 | decoded->orig_option_with_args_text); |
4512 | save_temps_overrides_dumpdir = true; |
4513 | break; |
4514 | |
4515 | case OPT_dumpdir: |
4516 | free (ptr: dumpdir); |
4517 | dumpdir = xstrdup (arg); |
4518 | save_temps_overrides_dumpdir = false; |
4519 | break; |
4520 | |
4521 | case OPT_dumpbase: |
4522 | free (ptr: dumpbase); |
4523 | dumpbase = xstrdup (arg); |
4524 | break; |
4525 | |
4526 | case OPT_dumpbase_ext: |
4527 | free (ptr: dumpbase_ext); |
4528 | dumpbase_ext = xstrdup (arg); |
4529 | break; |
4530 | |
4531 | case OPT_no_canonical_prefixes: |
4532 | /* Already handled as a special case, so ignored here. */ |
4533 | do_save = false; |
4534 | break; |
4535 | |
4536 | case OPT_pipe: |
4537 | validated = true; |
4538 | /* These options set the variables specified in common.opt |
4539 | automatically, but do need to be saved for spec |
4540 | processing. */ |
4541 | break; |
4542 | |
4543 | case OPT_specs_: |
4544 | { |
4545 | struct user_specs *user = XNEW (struct user_specs); |
4546 | |
4547 | user->next = (struct user_specs *) 0; |
4548 | user->filename = arg; |
4549 | if (user_specs_tail) |
4550 | user_specs_tail->next = user; |
4551 | else |
4552 | user_specs_head = user; |
4553 | user_specs_tail = user; |
4554 | } |
4555 | validated = true; |
4556 | break; |
4557 | |
4558 | case OPT__sysroot_: |
4559 | target_system_root = arg; |
4560 | target_system_root_changed = 1; |
4561 | /* Saving this option is useful to let self-specs decide to |
4562 | provide a default one. */ |
4563 | do_save = true; |
4564 | validated = true; |
4565 | break; |
4566 | |
4567 | case OPT_time_: |
4568 | if (report_times_to_file) |
4569 | fclose (stream: report_times_to_file); |
4570 | report_times_to_file = fopen (filename: arg, modes: "a"); |
4571 | do_save = false; |
4572 | break; |
4573 | |
4574 | case OPT_truncate: |
4575 | totruncate_file = arg; |
4576 | do_save = false; |
4577 | break; |
4578 | |
4579 | case OPT____: |
4580 | /* "-###" |
4581 | This is similar to -v except that there is no execution |
4582 | of the commands and the echoed arguments are quoted. It |
4583 | is intended for use in shell scripts to capture the |
4584 | driver-generated command line. */ |
4585 | verbose_only_flag++; |
4586 | verbose_flag = 1; |
4587 | do_save = false; |
4588 | break; |
4589 | |
4590 | case OPT_B: |
4591 | { |
4592 | size_t len = strlen (s: arg); |
4593 | |
4594 | /* Catch the case where the user has forgotten to append a |
4595 | directory separator to the path. Note, they may be using |
4596 | -B to add an executable name prefix, eg "i386-elf-", in |
4597 | order to distinguish between multiple installations of |
4598 | GCC in the same directory. Hence we must check to see |
4599 | if appending a directory separator actually makes a |
4600 | valid directory name. */ |
4601 | if (!IS_DIR_SEPARATOR (arg[len - 1]) |
4602 | && is_directory (arg)) |
4603 | { |
4604 | char *tmp = XNEWVEC (char, len + 2); |
4605 | strcpy (dest: tmp, src: arg); |
4606 | tmp[len] = DIR_SEPARATOR; |
4607 | tmp[++len] = 0; |
4608 | arg = tmp; |
4609 | } |
4610 | |
4611 | add_prefix (pprefix: &exec_prefixes, prefix: arg, NULL, |
4612 | priority: PREFIX_PRIORITY_B_OPT, require_machine_suffix: 0, os_multilib: 0); |
4613 | add_prefix (pprefix: &startfile_prefixes, prefix: arg, NULL, |
4614 | priority: PREFIX_PRIORITY_B_OPT, require_machine_suffix: 0, os_multilib: 0); |
4615 | add_prefix (pprefix: &include_prefixes, prefix: arg, NULL, |
4616 | priority: PREFIX_PRIORITY_B_OPT, require_machine_suffix: 0, os_multilib: 0); |
4617 | } |
4618 | validated = true; |
4619 | break; |
4620 | |
4621 | case OPT_E: |
4622 | have_E = true; |
4623 | break; |
4624 | |
4625 | case OPT_x: |
4626 | spec_lang = arg; |
4627 | if (!strcmp (s1: spec_lang, s2: "none")) |
4628 | /* Suppress the warning if -xnone comes after the last input |
4629 | file, because alternate command interfaces like g++ might |
4630 | find it useful to place -xnone after each input file. */ |
4631 | spec_lang = 0; |
4632 | else |
4633 | last_language_n_infiles = n_infiles; |
4634 | do_save = false; |
4635 | break; |
4636 | |
4637 | case OPT_o: |
4638 | have_o = 1; |
4639 | #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX) |
4640 | arg = convert_filename (arg, ! have_c, 0); |
4641 | #endif |
4642 | output_file = arg; |
4643 | /* On some systems, ld cannot handle "-o" without a space. So |
4644 | split the option from its argument. */ |
4645 | save_switch (opt: "-o", n_args: 1, args: &arg, validated, known: true); |
4646 | return true; |
4647 | |
4648 | case OPT_pie: |
4649 | #ifdef ENABLE_DEFAULT_PIE |
4650 | /* -pie is turned on by default. */ |
4651 | validated = true; |
4652 | #endif |
4653 | /* FALLTHROUGH */ |
4654 | case OPT_r: |
4655 | case OPT_shared: |
4656 | case OPT_no_pie: |
4657 | avoid_linker_hardening_p = true; |
4658 | break; |
4659 | |
4660 | case OPT_static: |
4661 | static_p = true; |
4662 | break; |
4663 | |
4664 | case OPT_static_libgcc: |
4665 | case OPT_shared_libgcc: |
4666 | case OPT_static_libgfortran: |
4667 | case OPT_static_libquadmath: |
4668 | case OPT_static_libphobos: |
4669 | case OPT_static_libgm2: |
4670 | case OPT_static_libstdc__: |
4671 | /* These are always valid; gcc.cc itself understands the first two |
4672 | gfortranspec.cc understands -static-libgfortran, |
4673 | libgfortran.spec handles -static-libquadmath, |
4674 | d-spec.cc understands -static-libphobos, |
4675 | gm2spec.cc understands -static-libgm2, |
4676 | and g++spec.cc understands -static-libstdc++. */ |
4677 | validated = true; |
4678 | break; |
4679 | |
4680 | case OPT_fwpa: |
4681 | flag_wpa = ""; |
4682 | break; |
4683 | |
4684 | case OPT_foffload_options_: |
4685 | check_foffload_target_names (arg); |
4686 | break; |
4687 | |
4688 | case OPT_foffload_: |
4689 | handle_foffload_option (arg); |
4690 | if (arg[0] == '-' || NULL != strchr (s: arg, c: '=')) |
4691 | save_switch (opt: concat ("-foffload-options=", arg, NULL), |
4692 | n_args: 0, NULL, validated, known: true); |
4693 | do_save = false; |
4694 | break; |
4695 | |
4696 | case OPT_gcodeview: |
4697 | add_infile (name: "--pdb=", language: "*"); |
4698 | break; |
4699 | |
4700 | default: |
4701 | /* Various driver options need no special processing at this |
4702 | point, having been handled in a prescan above or being |
4703 | handled by specs. */ |
4704 | break; |
4705 | } |
4706 | |
4707 | if (do_save) |
4708 | save_switch (opt: decoded->canonical_option[0], |
4709 | n_args: decoded->canonical_option_num_elements - 1, |
4710 | args: &decoded->canonical_option[1], validated, known: true); |
4711 | return true; |
4712 | } |
4713 | |
4714 | /* Return true if F2 is F1 followed by a single suffix, i.e., by a |
4715 | period and additional characters other than a period. */ |
4716 | |
4717 | static inline bool |
4718 | adds_single_suffix_p (const char *f2, const char *f1) |
4719 | { |
4720 | size_t len = strlen (s: f1); |
4721 | |
4722 | return (strncmp (s1: f1, s2: f2, n: len) == 0 |
4723 | && f2[len] == '.' |
4724 | && strchr (s: f2 + len + 1, c: '.') == NULL); |
4725 | } |
4726 | |
4727 | /* Put the driver's standard set of option handlers in *HANDLERS. */ |
4728 | |
4729 | static void |
4730 | set_option_handlers (struct cl_option_handlers *handlers) |
4731 | { |
4732 | handlers->unknown_option_callback = driver_unknown_option_callback; |
4733 | handlers->wrong_lang_callback = driver_wrong_lang_callback; |
4734 | handlers->num_handlers = 3; |
4735 | handlers->handlers[0].handler = driver_handle_option; |
4736 | handlers->handlers[0].mask = CL_DRIVER; |
4737 | handlers->handlers[1].handler = common_handle_option; |
4738 | handlers->handlers[1].mask = CL_COMMON; |
4739 | handlers->handlers[2].handler = target_handle_option; |
4740 | handlers->handlers[2].mask = CL_TARGET; |
4741 | } |
4742 | |
4743 | |
4744 | /* Return the index into infiles for the single non-library |
4745 | non-lto-wpa input file, -1 if there isn't any, or -2 if there is |
4746 | more than one. */ |
4747 | static inline int |
4748 | single_input_file_index () |
4749 | { |
4750 | int ret = -1; |
4751 | |
4752 | for (int i = 0; i < n_infiles; i++) |
4753 | { |
4754 | if (infiles[i].language |
4755 | && (infiles[i].language[0] == '*' |
4756 | || (flag_wpa |
4757 | && strcmp (s1: infiles[i].language, s2: "lto") == 0))) |
4758 | continue; |
4759 | |
4760 | if (ret != -1) |
4761 | return -2; |
4762 | |
4763 | ret = i; |
4764 | } |
4765 | |
4766 | return ret; |
4767 | } |
4768 | |
4769 | /* Create the vector `switches' and its contents. |
4770 | Store its length in `n_switches'. */ |
4771 | |
4772 | static void |
4773 | process_command (unsigned int decoded_options_count, |
4774 | struct cl_decoded_option *decoded_options) |
4775 | { |
4776 | const char *temp; |
4777 | char *temp1; |
4778 | char *tooldir_prefix, *tooldir_prefix2; |
4779 | char *(*get_relative_prefix) (const char *, const char *, |
4780 | const char *) = NULL; |
4781 | struct cl_option_handlers handlers; |
4782 | unsigned int j; |
4783 | |
4784 | gcc_exec_prefix = env.get (name: "GCC_EXEC_PREFIX"); |
4785 | |
4786 | n_switches = 0; |
4787 | n_infiles = 0; |
4788 | added_libraries = 0; |
4789 | |
4790 | /* Figure compiler version from version string. */ |
4791 | |
4792 | compiler_version = temp1 = xstrdup (version_string); |
4793 | |
4794 | for (; *temp1; ++temp1) |
4795 | { |
4796 | if (*temp1 == ' ') |
4797 | { |
4798 | *temp1 = '\0'; |
4799 | break; |
4800 | } |
4801 | } |
4802 | |
4803 | /* Handle any -no-canonical-prefixes flag early, to assign the function |
4804 | that builds relative prefixes. This function creates default search |
4805 | paths that are needed later in normal option handling. */ |
4806 | |
4807 | for (j = 1; j < decoded_options_count; j++) |
4808 | { |
4809 | if (decoded_options[j].opt_index == OPT_no_canonical_prefixes) |
4810 | { |
4811 | get_relative_prefix = make_relative_prefix_ignore_links; |
4812 | break; |
4813 | } |
4814 | } |
4815 | if (! get_relative_prefix) |
4816 | get_relative_prefix = make_relative_prefix; |
4817 | |
4818 | /* Set up the default search paths. If there is no GCC_EXEC_PREFIX, |
4819 | see if we can create it from the pathname specified in |
4820 | decoded_options[0].arg. */ |
4821 | |
4822 | gcc_libexec_prefix = standard_libexec_prefix; |
4823 | #ifndef VMS |
4824 | /* FIXME: make_relative_prefix doesn't yet work for VMS. */ |
4825 | if (!gcc_exec_prefix) |
4826 | { |
4827 | gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg, |
4828 | standard_bindir_prefix, |
4829 | standard_exec_prefix); |
4830 | gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg, |
4831 | standard_bindir_prefix, |
4832 | standard_libexec_prefix); |
4833 | if (gcc_exec_prefix) |
4834 | xputenv (string: concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL)); |
4835 | } |
4836 | else |
4837 | { |
4838 | /* make_relative_prefix requires a program name, but |
4839 | GCC_EXEC_PREFIX is typically a directory name with a trailing |
4840 | / (which is ignored by make_relative_prefix), so append a |
4841 | program name. */ |
4842 | char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL); |
4843 | gcc_libexec_prefix = get_relative_prefix (tmp_prefix, |
4844 | standard_exec_prefix, |
4845 | standard_libexec_prefix); |
4846 | |
4847 | /* The path is unrelocated, so fallback to the original setting. */ |
4848 | if (!gcc_libexec_prefix) |
4849 | gcc_libexec_prefix = standard_libexec_prefix; |
4850 | |
4851 | free (ptr: tmp_prefix); |
4852 | } |
4853 | #else |
4854 | #endif |
4855 | /* From this point onward, gcc_exec_prefix is non-null if the toolchain |
4856 | is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX |
4857 | or an automatically created GCC_EXEC_PREFIX from |
4858 | decoded_options[0].arg. */ |
4859 | |
4860 | /* Do language-specific adjustment/addition of flags. */ |
4861 | lang_specific_driver (&decoded_options, &decoded_options_count, |
4862 | &added_libraries); |
4863 | |
4864 | if (gcc_exec_prefix) |
4865 | { |
4866 | int len = strlen (s: gcc_exec_prefix); |
4867 | |
4868 | if (len > (int) sizeof ("/lib/gcc/") - 1 |
4869 | && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1]))) |
4870 | { |
4871 | temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1; |
4872 | if (IS_DIR_SEPARATOR (*temp) |
4873 | && filename_ncmp (s1: temp + 1, s2: "lib", n: 3) == 0 |
4874 | && IS_DIR_SEPARATOR (temp[4]) |
4875 | && filename_ncmp (s1: temp + 5, s2: "gcc", n: 3) == 0) |
4876 | len -= sizeof ("/lib/gcc/") - 1; |
4877 | } |
4878 | |
4879 | set_std_prefix (gcc_exec_prefix, len); |
4880 | add_prefix (pprefix: &exec_prefixes, prefix: gcc_libexec_prefix, component: "GCC", |
4881 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 0); |
4882 | add_prefix (pprefix: &startfile_prefixes, prefix: gcc_exec_prefix, component: "GCC", |
4883 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 0); |
4884 | } |
4885 | |
4886 | /* COMPILER_PATH and LIBRARY_PATH have values |
4887 | that are lists of directory names with colons. */ |
4888 | |
4889 | temp = env.get (name: "COMPILER_PATH"); |
4890 | if (temp) |
4891 | { |
4892 | const char *startp, *endp; |
4893 | char *nstore = (char *) alloca (strlen (temp) + 3); |
4894 | |
4895 | startp = endp = temp; |
4896 | while (1) |
4897 | { |
4898 | if (*endp == PATH_SEPARATOR || *endp == 0) |
4899 | { |
4900 | strncpy (dest: nstore, src: startp, n: endp - startp); |
4901 | if (endp == startp) |
4902 | strcpy (dest: nstore, src: concat (".", dir_separator_str, NULL)); |
4903 | else if (!IS_DIR_SEPARATOR (endp[-1])) |
4904 | { |
4905 | nstore[endp - startp] = DIR_SEPARATOR; |
4906 | nstore[endp - startp + 1] = 0; |
4907 | } |
4908 | else |
4909 | nstore[endp - startp] = 0; |
4910 | add_prefix (pprefix: &exec_prefixes, prefix: nstore, component: 0, |
4911 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 0); |
4912 | add_prefix (pprefix: &include_prefixes, prefix: nstore, component: 0, |
4913 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 0); |
4914 | if (*endp == 0) |
4915 | break; |
4916 | endp = startp = endp + 1; |
4917 | } |
4918 | else |
4919 | endp++; |
4920 | } |
4921 | } |
4922 | |
4923 | temp = env.get (LIBRARY_PATH_ENV); |
4924 | if (temp && *cross_compile == '0') |
4925 | { |
4926 | const char *startp, *endp; |
4927 | char *nstore = (char *) alloca (strlen (temp) + 3); |
4928 | |
4929 | startp = endp = temp; |
4930 | while (1) |
4931 | { |
4932 | if (*endp == PATH_SEPARATOR || *endp == 0) |
4933 | { |
4934 | strncpy (dest: nstore, src: startp, n: endp - startp); |
4935 | if (endp == startp) |
4936 | strcpy (dest: nstore, src: concat (".", dir_separator_str, NULL)); |
4937 | else if (!IS_DIR_SEPARATOR (endp[-1])) |
4938 | { |
4939 | nstore[endp - startp] = DIR_SEPARATOR; |
4940 | nstore[endp - startp + 1] = 0; |
4941 | } |
4942 | else |
4943 | nstore[endp - startp] = 0; |
4944 | add_prefix (pprefix: &startfile_prefixes, prefix: nstore, NULL, |
4945 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 1); |
4946 | if (*endp == 0) |
4947 | break; |
4948 | endp = startp = endp + 1; |
4949 | } |
4950 | else |
4951 | endp++; |
4952 | } |
4953 | } |
4954 | |
4955 | /* Use LPATH like LIBRARY_PATH (for the CMU build program). */ |
4956 | temp = env.get (name: "LPATH"); |
4957 | if (temp && *cross_compile == '0') |
4958 | { |
4959 | const char *startp, *endp; |
4960 | char *nstore = (char *) alloca (strlen (temp) + 3); |
4961 | |
4962 | startp = endp = temp; |
4963 | while (1) |
4964 | { |
4965 | if (*endp == PATH_SEPARATOR || *endp == 0) |
4966 | { |
4967 | strncpy (dest: nstore, src: startp, n: endp - startp); |
4968 | if (endp == startp) |
4969 | strcpy (dest: nstore, src: concat (".", dir_separator_str, NULL)); |
4970 | else if (!IS_DIR_SEPARATOR (endp[-1])) |
4971 | { |
4972 | nstore[endp - startp] = DIR_SEPARATOR; |
4973 | nstore[endp - startp + 1] = 0; |
4974 | } |
4975 | else |
4976 | nstore[endp - startp] = 0; |
4977 | add_prefix (pprefix: &startfile_prefixes, prefix: nstore, NULL, |
4978 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 1); |
4979 | if (*endp == 0) |
4980 | break; |
4981 | endp = startp = endp + 1; |
4982 | } |
4983 | else |
4984 | endp++; |
4985 | } |
4986 | } |
4987 | |
4988 | /* Process the options and store input files and switches in their |
4989 | vectors. */ |
4990 | |
4991 | last_language_n_infiles = -1; |
4992 | |
4993 | set_option_handlers (&handlers); |
4994 | |
4995 | for (j = 1; j < decoded_options_count; j++) |
4996 | { |
4997 | switch (decoded_options[j].opt_index) |
4998 | { |
4999 | case OPT_S: |
5000 | case OPT_c: |
5001 | case OPT_E: |
5002 | have_c = 1; |
5003 | break; |
5004 | } |
5005 | if (have_c) |
5006 | break; |
5007 | } |
5008 | |
5009 | for (j = 1; j < decoded_options_count; j++) |
5010 | { |
5011 | if (decoded_options[j].opt_index == OPT_SPECIAL_input_file) |
5012 | { |
5013 | const char *arg = decoded_options[j].arg; |
5014 | |
5015 | #ifdef HAVE_TARGET_OBJECT_SUFFIX |
5016 | arg = convert_filename (arg, 0, access (arg, F_OK)); |
5017 | #endif |
5018 | add_infile (name: arg, language: spec_lang); |
5019 | |
5020 | continue; |
5021 | } |
5022 | |
5023 | read_cmdline_option (opts: &global_options, opts_set: &global_options_set, |
5024 | decoded: decoded_options + j, UNKNOWN_LOCATION, |
5025 | CL_DRIVER, handlers: &handlers, dc: global_dc); |
5026 | } |
5027 | |
5028 | /* If the user didn't specify any, default to all configured offload |
5029 | targets. */ |
5030 | if (ENABLE_OFFLOADING && offload_targets == NULL) |
5031 | { |
5032 | handle_foffload_option (OFFLOAD_TARGETS); |
5033 | #if OFFLOAD_DEFAULTED |
5034 | offload_targets_default = true; |
5035 | #endif |
5036 | } |
5037 | |
5038 | /* TODO: check if -static -pie works and maybe use it. */ |
5039 | if (flag_hardened) |
5040 | { |
5041 | if (!avoid_linker_hardening_p && !static_p) |
5042 | { |
5043 | #if defined HAVE_LD_PIE && defined LD_PIE_SPEC |
5044 | save_switch (LD_PIE_SPEC, n_args: 0, NULL, /*validated=*/true, /*known=*/false); |
5045 | #endif |
5046 | /* These are passed straight down to collect2 so we have to break |
5047 | it up like this. */ |
5048 | if (HAVE_LD_NOW_SUPPORT) |
5049 | { |
5050 | add_infile (name: "-z", language: "*"); |
5051 | add_infile (name: "now", language: "*"); |
5052 | } |
5053 | if (HAVE_LD_RELRO_SUPPORT) |
5054 | { |
5055 | add_infile (name: "-z", language: "*"); |
5056 | add_infile (name: "relro", language: "*"); |
5057 | } |
5058 | } |
5059 | /* We can't use OPT_Whardened yet. Sigh. */ |
5060 | else |
5061 | warning_at (UNKNOWN_LOCATION, 0, |
5062 | "linker hardening options not enabled by %<-fhardened%> " |
5063 | "because other link options were specified on the command " |
5064 | "line"); |
5065 | } |
5066 | |
5067 | /* Handle -gtoggle as it would later in toplev.cc:process_options to |
5068 | make the debug-level-gt spec function work as expected. */ |
5069 | if (flag_gtoggle) |
5070 | { |
5071 | if (debug_info_level == DINFO_LEVEL_NONE) |
5072 | debug_info_level = DINFO_LEVEL_NORMAL; |
5073 | else |
5074 | debug_info_level = DINFO_LEVEL_NONE; |
5075 | } |
5076 | |
5077 | if (output_file |
5078 | && strcmp (s1: output_file, s2: "-") != 0 |
5079 | && strcmp (s1: output_file, HOST_BIT_BUCKET) != 0) |
5080 | { |
5081 | int i; |
5082 | for (i = 0; i < n_infiles; i++) |
5083 | if ((!infiles[i].language || infiles[i].language[0] != '*') |
5084 | && canonical_filename_eq (a: infiles[i].name, b: output_file)) |
5085 | fatal_error (input_location, |
5086 | "input file %qs is the same as output file", |
5087 | output_file); |
5088 | } |
5089 | |
5090 | if (output_file != NULL && output_file[0] == '\0') |
5091 | fatal_error (input_location, "output filename may not be empty"); |
5092 | |
5093 | /* -dumpdir and -save-temps=* both specify the location of aux/dump |
5094 | outputs; the one that appears last prevails. When compiling |
5095 | multiple sources, an explicit dumpbase (minus -ext) may be |
5096 | combined with an explicit or implicit dumpdir, whereas when |
5097 | linking, a specified or implied link output name (minus |
5098 | extension) may be combined with a prevailing -save-temps=* or an |
5099 | otherwise implied dumpdir, but not override a prevailing |
5100 | -dumpdir. Primary outputs (e.g., linker output when linking |
5101 | without -o, or .i, .s or .o outputs when processing multiple |
5102 | inputs with -E, -S or -c, respectively) are NOT affected by these |
5103 | -save-temps=/-dump* options, always landing in the current |
5104 | directory and with the same basename as the input when an output |
5105 | name is not given, but when they're intermediate outputs, they |
5106 | are named like other aux outputs, so the options affect their |
5107 | location and name. |
5108 | |
5109 | Here are some examples. There are several more in the |
5110 | documentation of -o and -dump*, and some quite exhaustive tests |
5111 | in gcc.misc-tests/outputs.exp. |
5112 | |
5113 | When compiling any number of sources, no -dump* nor |
5114 | -save-temps=*, all outputs in cwd without prefix: |
5115 | |
5116 | # gcc -c b.c -gsplit-dwarf |
5117 | -> cc1 [-dumpdir ./] -dumpbase b.c -dumpbase-ext .c # b.o b.dwo |
5118 | |
5119 | # gcc -c b.c d.c -gsplit-dwarf |
5120 | -> cc1 [-dumpdir ./] -dumpbase b.c -dumpbase-ext .c # b.o b.dwo |
5121 | && cc1 [-dumpdir ./] -dumpbase d.c -dumpbase-ext .c # d.o d.dwo |
5122 | |
5123 | When compiling and linking, no -dump* nor -save-temps=*, .o |
5124 | outputs are temporary, aux outputs land in the dir of the output, |
5125 | prefixed with the basename of the linker output: |
5126 | |
5127 | # gcc b.c d.c -o ab -gsplit-dwarf |
5128 | -> cc1 -dumpdir ab- -dumpbase b.c -dumpbase-ext .c # ab-b.dwo |
5129 | && cc1 -dumpdir ab- -dumpbase d.c -dumpbase-ext .c # ab-d.dwo |
5130 | && link ... -o ab |
5131 | |
5132 | # gcc b.c d.c [-o a.out] -gsplit-dwarf |
5133 | -> cc1 -dumpdir a- -dumpbase b.c -dumpbase-ext .c # a-b.dwo |
5134 | && cc1 -dumpdir a- -dumpbase d.c -dumpbase-ext .c # a-d.dwo |
5135 | && link ... [-o a.out] |
5136 | |
5137 | When compiling and linking, a prevailing -dumpdir fully overrides |
5138 | the prefix of aux outputs given by the output name: |
5139 | |
5140 | # gcc -dumpdir f b.c d.c -gsplit-dwarf [-o [dir/]whatever] |
5141 | -> cc1 -dumpdir f -dumpbase b.c -dumpbase-ext .c # fb.dwo |
5142 | && cc1 -dumpdir f -dumpbase d.c -dumpbase-ext .c # fd.dwo |
5143 | && link ... [-o whatever] |
5144 | |
5145 | When compiling multiple inputs, an explicit -dumpbase is combined |
5146 | with -dumpdir, affecting aux outputs, but not the .o outputs: |
5147 | |
5148 | # gcc -dumpdir f -dumpbase g- b.c d.c -gsplit-dwarf -c |
5149 | -> cc1 -dumpdir fg- -dumpbase b.c -dumpbase-ext .c # b.o fg-b.dwo |
5150 | && cc1 -dumpdir fg- -dumpbase d.c -dumpbase-ext .c # d.o fg-d.dwo |
5151 | |
5152 | When compiling and linking with -save-temps, the .o outputs that |
5153 | would have been temporary become aux outputs, so they get |
5154 | affected by -dump* flags: |
5155 | |
5156 | # gcc -dumpdir f -dumpbase g- -save-temps b.c d.c |
5157 | -> cc1 -dumpdir fg- -dumpbase b.c -dumpbase-ext .c # fg-b.o |
5158 | && cc1 -dumpdir fg- -dumpbase d.c -dumpbase-ext .c # fg-d.o |
5159 | && link |
5160 | |
5161 | If -save-temps=* prevails over -dumpdir, however, the explicit |
5162 | -dumpdir is discarded, as if it wasn't there. The basename of |
5163 | the implicit linker output, a.out or a.exe, becomes a- as the aux |
5164 | output prefix for all compilations: |
5165 | |
5166 | # gcc [-dumpdir f] -save-temps=cwd b.c d.c |
5167 | -> cc1 -dumpdir a- -dumpbase b.c -dumpbase-ext .c # a-b.o |
5168 | && cc1 -dumpdir a- -dumpbase d.c -dumpbase-ext .c # a-d.o |
5169 | && link |
5170 | |
5171 | A single -dumpbase, applying to multiple inputs, overrides the |
5172 | linker output name, implied or explicit, as the aux output prefix: |
5173 | |
5174 | # gcc [-dumpdir f] -dumpbase g- -save-temps=cwd b.c d.c |
5175 | -> cc1 -dumpdir g- -dumpbase b.c -dumpbase-ext .c # g-b.o |
5176 | && cc1 -dumpdir g- -dumpbase d.c -dumpbase-ext .c # g-d.o |
5177 | && link |
5178 | |
5179 | # gcc [-dumpdir f] -dumpbase g- -save-temps=cwd b.c d.c -o dir/h.out |
5180 | -> cc1 -dumpdir g- -dumpbase b.c -dumpbase-ext .c # g-b.o |
5181 | && cc1 -dumpdir g- -dumpbase d.c -dumpbase-ext .c # g-d.o |
5182 | && link -o dir/h.out |
5183 | |
5184 | Now, if the linker output is NOT overridden as a prefix, but |
5185 | -save-temps=* overrides implicit or explicit -dumpdir, the |
5186 | effective dump dir combines the dir selected by the -save-temps=* |
5187 | option with the basename of the specified or implied link output: |
5188 | |
5189 | # gcc [-dumpdir f] -save-temps=cwd b.c d.c -o dir/h.out |
5190 | -> cc1 -dumpdir h- -dumpbase b.c -dumpbase-ext .c # h-b.o |
5191 | && cc1 -dumpdir h- -dumpbase d.c -dumpbase-ext .c # h-d.o |
5192 | && link -o dir/h.out |
5193 | |
5194 | # gcc [-dumpdir f] -save-temps=obj b.c d.c -o dir/h.out |
5195 | -> cc1 -dumpdir dir/h- -dumpbase b.c -dumpbase-ext .c # dir/h-b.o |
5196 | && cc1 -dumpdir dir/h- -dumpbase d.c -dumpbase-ext .c # dir/h-d.o |
5197 | && link -o dir/h.out |
5198 | |
5199 | But then again, a single -dumpbase applying to multiple inputs |
5200 | gets used instead of the linker output basename in the combined |
5201 | dumpdir: |
5202 | |
5203 | # gcc [-dumpdir f] -dumpbase g- -save-temps=obj b.c d.c -o dir/h.out |
5204 | -> cc1 -dumpdir dir/g- -dumpbase b.c -dumpbase-ext .c # dir/g-b.o |
5205 | && cc1 -dumpdir dir/g- -dumpbase d.c -dumpbase-ext .c # dir/g-d.o |
5206 | && link -o dir/h.out |
5207 | |
5208 | With a single input being compiled, the output basename does NOT |
5209 | affect the dumpdir prefix. |
5210 | |
5211 | # gcc -save-temps=obj b.c -gsplit-dwarf -c -o dir/b.o |
5212 | -> cc1 -dumpdir dir/ -dumpbase b.c -dumpbase-ext .c # dir/b.o dir/b.dwo |
5213 | |
5214 | but when compiling and linking even a single file, it does: |
5215 | |
5216 | # gcc -save-temps=obj b.c -o dir/h.out |
5217 | -> cc1 -dumpdir dir/h- -dumpbase b.c -dumpbase-ext .c # dir/h-b.o |
5218 | |
5219 | unless an explicit -dumpdir prevails: |
5220 | |
5221 | # gcc -save-temps[=obj] -dumpdir g- b.c -o dir/h.out |
5222 | -> cc1 -dumpdir g- -dumpbase b.c -dumpbase-ext .c # g-b.o |
5223 | |
5224 | */ |
5225 | |
5226 | bool explicit_dumpdir = dumpdir; |
5227 | |
5228 | if ((!save_temps_overrides_dumpdir && explicit_dumpdir) |
5229 | || (output_file && not_actual_file_p (output_file))) |
5230 | { |
5231 | /* Do nothing. */ |
5232 | } |
5233 | |
5234 | /* If -save-temps=obj and -o name, create the prefix to use for %b. |
5235 | Otherwise just make -save-temps=obj the same as -save-temps=cwd. */ |
5236 | else if (save_temps_flag != SAVE_TEMPS_CWD && output_file != NULL) |
5237 | { |
5238 | free (ptr: dumpdir); |
5239 | dumpdir = NULL; |
5240 | temp = lbasename (output_file); |
5241 | if (temp != output_file) |
5242 | dumpdir = xstrndup (output_file, |
5243 | strlen (s: output_file) - strlen (s: temp)); |
5244 | } |
5245 | else if (dumpdir) |
5246 | { |
5247 | free (ptr: dumpdir); |
5248 | dumpdir = NULL; |
5249 | } |
5250 | |
5251 | if (save_temps_flag) |
5252 | save_temps_flag = SAVE_TEMPS_DUMP; |
5253 | |
5254 | /* If there is any pathname component in an explicit -dumpbase, it |
5255 | overrides dumpdir entirely, so discard it right away. Although |
5256 | the presence of an explicit -dumpdir matters for the driver, it |
5257 | shouldn't matter for other processes, that get all that's needed |
5258 | from the -dumpdir and -dumpbase always passed to them. */ |
5259 | if (dumpdir && dumpbase && lbasename (dumpbase) != dumpbase) |
5260 | { |
5261 | free (ptr: dumpdir); |
5262 | dumpdir = NULL; |
5263 | } |
5264 | |
5265 | /* Check that dumpbase_ext matches the end of dumpbase, drop it |
5266 | otherwise. */ |
5267 | if (dumpbase_ext && dumpbase && *dumpbase) |
5268 | { |
5269 | int lendb = strlen (s: dumpbase); |
5270 | int lendbx = strlen (s: dumpbase_ext); |
5271 | |
5272 | /* -dumpbase-ext must be a suffix proper; discard it if it |
5273 | matches all of -dumpbase, as that would make for an empty |
5274 | basename. */ |
5275 | if (lendbx >= lendb |
5276 | || strcmp (s1: dumpbase + lendb - lendbx, s2: dumpbase_ext) != 0) |
5277 | { |
5278 | free (ptr: dumpbase_ext); |
5279 | dumpbase_ext = NULL; |
5280 | } |
5281 | } |
5282 | |
5283 | /* -dumpbase with multiple sources goes into dumpdir. With a single |
5284 | source, it does only if linking and if dumpdir was not explicitly |
5285 | specified. */ |
5286 | if (dumpbase && *dumpbase |
5287 | && (single_input_file_index () == -2 |
5288 | || (!have_c && !explicit_dumpdir))) |
5289 | { |
5290 | char *prefix; |
5291 | |
5292 | if (dumpbase_ext) |
5293 | /* We checked that they match above. */ |
5294 | dumpbase[strlen (s: dumpbase) - strlen (s: dumpbase_ext)] = '\0'; |
5295 | |
5296 | if (dumpdir) |
5297 | prefix = concat (dumpdir, dumpbase, "-", NULL); |
5298 | else |
5299 | prefix = concat (dumpbase, "-", NULL); |
5300 | |
5301 | free (ptr: dumpdir); |
5302 | free (ptr: dumpbase); |
5303 | free (ptr: dumpbase_ext); |
5304 | dumpbase = dumpbase_ext = NULL; |
5305 | dumpdir = prefix; |
5306 | dumpdir_trailing_dash_added = true; |
5307 | } |
5308 | |
5309 | /* If dumpbase was not brought into dumpdir but we're linking, bring |
5310 | output_file into dumpdir unless dumpdir was explicitly specified. |
5311 | The test for !explicit_dumpdir is further below, because we want |
5312 | to use the obase computation for a ghost outbase, passed to |
5313 | GCC_COLLECT_OPTIONS. */ |
5314 | else if (!have_c && (!explicit_dumpdir || (dumpbase && !*dumpbase))) |
5315 | { |
5316 | /* If we get here, we know dumpbase was not specified, or it was |
5317 | specified as an empty string. If it was anything else, it |
5318 | would have combined with dumpdir above, because the condition |
5319 | for dumpbase to be used when present is broader than the |
5320 | condition that gets us here. */ |
5321 | gcc_assert (!dumpbase || !*dumpbase); |
5322 | |
5323 | const char *obase; |
5324 | char *tofree = NULL; |
5325 | if (!output_file || not_actual_file_p (output_file)) |
5326 | obase = "a"; |
5327 | else |
5328 | { |
5329 | obase = lbasename (output_file); |
5330 | size_t blen = strlen (s: obase), xlen; |
5331 | /* Drop the suffix if it's dumpbase_ext, if given, |
5332 | otherwise .exe or the target executable suffix, or if the |
5333 | output was explicitly named a.out, but not otherwise. */ |
5334 | if (dumpbase_ext |
5335 | ? (blen > (xlen = strlen (s: dumpbase_ext)) |
5336 | && strcmp (s1: (temp = (obase + blen - xlen)), |
5337 | s2: dumpbase_ext) == 0) |
5338 | : ((temp = strrchr (s: obase + 1, c: '.')) |
5339 | && (xlen = strlen (s: temp)) |
5340 | && (strcmp (s1: temp, s2: ".exe") == 0 |
5341 | #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) |
5342 | || strcmp (temp, TARGET_EXECUTABLE_SUFFIX) == 0 |
5343 | #endif |
5344 | || strcmp (s1: obase, s2: "a.out") == 0))) |
5345 | { |
5346 | tofree = xstrndup (obase, blen - xlen); |
5347 | obase = tofree; |
5348 | } |
5349 | } |
5350 | |
5351 | /* We wish to save this basename to the -dumpdir passed through |
5352 | GCC_COLLECT_OPTIONS within maybe_run_linker, for e.g. LTO, |
5353 | but we do NOT wish to add it to e.g. %b, so we keep |
5354 | outbase_length as zero. */ |
5355 | gcc_assert (!outbase); |
5356 | outbase_length = 0; |
5357 | |
5358 | /* If we're building [dir1/]foo[.exe] out of a single input |
5359 | [dir2/]foo.c that shares the same basename, dump to |
5360 | [dir2/]foo.c.* rather than duplicating the basename into |
5361 | [dir2/]foo-foo.c.*. */ |
5362 | int idxin; |
5363 | if (dumpbase |
5364 | || ((idxin = single_input_file_index ()) >= 0 |
5365 | && adds_single_suffix_p (f2: lbasename (infiles[idxin].name), |
5366 | f1: obase))) |
5367 | { |
5368 | if (obase == tofree) |
5369 | outbase = tofree; |
5370 | else |
5371 | { |
5372 | outbase = xstrdup (obase); |
5373 | free (ptr: tofree); |
5374 | } |
5375 | obase = tofree = NULL; |
5376 | } |
5377 | else |
5378 | { |
5379 | if (dumpdir) |
5380 | { |
5381 | char *p = concat (dumpdir, obase, "-", NULL); |
5382 | free (ptr: dumpdir); |
5383 | dumpdir = p; |
5384 | } |
5385 | else |
5386 | dumpdir = concat (obase, "-", NULL); |
5387 | |
5388 | dumpdir_trailing_dash_added = true; |
5389 | |
5390 | free (ptr: tofree); |
5391 | obase = tofree = NULL; |
5392 | } |
5393 | |
5394 | if (!explicit_dumpdir || dumpbase) |
5395 | { |
5396 | /* Absent -dumpbase and present -dumpbase-ext have been applied |
5397 | to the linker output name, so compute fresh defaults for each |
5398 | compilation. */ |
5399 | free (ptr: dumpbase_ext); |
5400 | dumpbase_ext = NULL; |
5401 | } |
5402 | } |
5403 | |
5404 | /* Now, if we're compiling, or if we haven't used the dumpbase |
5405 | above, then outbase (%B) is derived from dumpbase, if given, or |
5406 | from the output name, given or implied. We can't precompute |
5407 | implied output names, but that's ok, since they're derived from |
5408 | input names. Just make sure we skip this if dumpbase is the |
5409 | empty string: we want to use input names then, so don't set |
5410 | outbase. */ |
5411 | if ((dumpbase || have_c) |
5412 | && !(dumpbase && !*dumpbase)) |
5413 | { |
5414 | gcc_assert (!outbase); |
5415 | |
5416 | if (dumpbase) |
5417 | { |
5418 | gcc_assert (single_input_file_index () != -2); |
5419 | /* We do not want lbasename here; dumpbase with dirnames |
5420 | overrides dumpdir entirely, even if dumpdir is |
5421 | specified. */ |
5422 | if (dumpbase_ext) |
5423 | /* We've already checked above that the suffix matches. */ |
5424 | outbase = xstrndup (dumpbase, |
5425 | strlen (s: dumpbase) - strlen (s: dumpbase_ext)); |
5426 | else |
5427 | outbase = xstrdup (dumpbase); |
5428 | } |
5429 | else if (output_file && !not_actual_file_p (output_file)) |
5430 | { |
5431 | outbase = xstrdup (lbasename (output_file)); |
5432 | char *p = strrchr (s: outbase + 1, c: '.'); |
5433 | if (p) |
5434 | *p = '\0'; |
5435 | } |
5436 | |
5437 | if (outbase) |
5438 | outbase_length = strlen (s: outbase); |
5439 | } |
5440 | |
5441 | /* If there is any pathname component in an explicit -dumpbase, do |
5442 | not use dumpdir, but retain it to pass it on to the compiler. */ |
5443 | if (dumpdir) |
5444 | dumpdir_length = strlen (s: dumpdir); |
5445 | else |
5446 | dumpdir_length = 0; |
5447 | |
5448 | /* Check that dumpbase_ext, if still present, still matches the end |
5449 | of dumpbase, if present, and drop it otherwise. We only retained |
5450 | it above when dumpbase was absent to maybe use it to drop the |
5451 | extension from output_name before combining it with dumpdir. We |
5452 | won't deal with -dumpbase-ext when -dumpbase is not explicitly |
5453 | given, even if just to activate backward-compatible dumpbase: |
5454 | dropping it on the floor is correct, expected and documented |
5455 | behavior. Attempting to deal with a -dumpbase-ext that might |
5456 | match the end of some input filename, or of the combination of |
5457 | the output basename with the suffix of the input filename, |
5458 | possible with an intermediate .gk extension for -fcompare-debug, |
5459 | is just calling for trouble. */ |
5460 | if (dumpbase_ext) |
5461 | { |
5462 | if (!dumpbase || !*dumpbase) |
5463 | { |
5464 | free (ptr: dumpbase_ext); |
5465 | dumpbase_ext = NULL; |
5466 | } |
5467 | else |
5468 | gcc_assert (strcmp (dumpbase + strlen (dumpbase) |
5469 | - strlen (dumpbase_ext), dumpbase_ext) == 0); |
5470 | } |
5471 | |
5472 | if (save_temps_flag && use_pipes) |
5473 | { |
5474 | /* -save-temps overrides -pipe, so that temp files are produced */ |
5475 | if (save_temps_flag) |
5476 | warning (0, "%<-pipe%> ignored because %<-save-temps%> specified"); |
5477 | use_pipes = 0; |
5478 | } |
5479 | |
5480 | if (!compare_debug) |
5481 | { |
5482 | const char *gcd = env.get (name: "GCC_COMPARE_DEBUG"); |
5483 | |
5484 | if (gcd && gcd[0] == '-') |
5485 | { |
5486 | compare_debug = 2; |
5487 | compare_debug_opt = gcd; |
5488 | } |
5489 | else if (gcd && *gcd && strcmp (s1: gcd, s2: "0")) |
5490 | { |
5491 | compare_debug = 3; |
5492 | compare_debug_opt = "-gtoggle"; |
5493 | } |
5494 | } |
5495 | else if (compare_debug < 0) |
5496 | { |
5497 | compare_debug = 0; |
5498 | gcc_assert (!compare_debug_opt); |
5499 | } |
5500 | |
5501 | /* Set up the search paths. We add directories that we expect to |
5502 | contain GNU Toolchain components before directories specified by |
5503 | the machine description so that we will find GNU components (like |
5504 | the GNU assembler) before those of the host system. */ |
5505 | |
5506 | /* If we don't know where the toolchain has been installed, use the |
5507 | configured-in locations. */ |
5508 | if (!gcc_exec_prefix) |
5509 | { |
5510 | #ifndef OS2 |
5511 | add_prefix (pprefix: &exec_prefixes, prefix: standard_libexec_prefix, component: "GCC", |
5512 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 1, os_multilib: 0); |
5513 | add_prefix (pprefix: &exec_prefixes, prefix: standard_libexec_prefix, component: "BINUTILS", |
5514 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 2, os_multilib: 0); |
5515 | add_prefix (pprefix: &exec_prefixes, prefix: standard_exec_prefix, component: "BINUTILS", |
5516 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 2, os_multilib: 0); |
5517 | #endif |
5518 | add_prefix (pprefix: &startfile_prefixes, prefix: standard_exec_prefix, component: "BINUTILS", |
5519 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 1, os_multilib: 0); |
5520 | } |
5521 | |
5522 | gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix)); |
5523 | tooldir_prefix2 = concat (tooldir_base_prefix, spec_machine, |
5524 | dir_separator_str, NULL); |
5525 | |
5526 | /* Look for tools relative to the location from which the driver is |
5527 | running, or, if that is not available, the configured prefix. */ |
5528 | tooldir_prefix |
5529 | = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix, |
5530 | spec_host_machine, dir_separator_str, spec_version, |
5531 | accel_dir_suffix, dir_separator_str, tooldir_prefix2, NULL); |
5532 | free (ptr: tooldir_prefix2); |
5533 | |
5534 | add_prefix (pprefix: &exec_prefixes, |
5535 | prefix: concat (tooldir_prefix, "bin", dir_separator_str, NULL), |
5536 | component: "BINUTILS", priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 0); |
5537 | add_prefix (pprefix: &startfile_prefixes, |
5538 | prefix: concat (tooldir_prefix, "lib", dir_separator_str, NULL), |
5539 | component: "BINUTILS", priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 1); |
5540 | free (ptr: tooldir_prefix); |
5541 | |
5542 | #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS) |
5543 | /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix, |
5544 | then consider it to relocate with the rest of the GCC installation |
5545 | if GCC_EXEC_PREFIX is set. |
5546 | ``make_relative_prefix'' is not compiled for VMS, so don't call it. */ |
5547 | if (target_system_root && !target_system_root_changed && gcc_exec_prefix) |
5548 | { |
5549 | char *tmp_prefix = get_relative_prefix (decoded_options[0].arg, |
5550 | standard_bindir_prefix, |
5551 | target_system_root); |
5552 | if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0) |
5553 | { |
5554 | target_system_root = tmp_prefix; |
5555 | target_system_root_changed = 1; |
5556 | } |
5557 | } |
5558 | #endif |
5559 | |
5560 | /* More prefixes are enabled in main, after we read the specs file |
5561 | and determine whether this is cross-compilation or not. */ |
5562 | |
5563 | if (n_infiles != 0 && n_infiles == last_language_n_infiles && spec_lang != 0) |
5564 | warning (0, "%<-x %s%> after last input file has no effect", spec_lang); |
5565 | |
5566 | /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG |
5567 | environment variable. */ |
5568 | if (compare_debug == 2 || compare_debug == 3) |
5569 | { |
5570 | const char *opt = concat ("-fcompare-debug=", compare_debug_opt, NULL); |
5571 | save_switch (opt, n_args: 0, NULL, validated: false, known: true); |
5572 | compare_debug = 1; |
5573 | } |
5574 | |
5575 | /* Ensure we only invoke each subprocess once. */ |
5576 | if (n_infiles == 0 |
5577 | && (print_subprocess_help || print_help_list || print_version)) |
5578 | { |
5579 | /* Create a dummy input file, so that we can pass |
5580 | the help option on to the various sub-processes. */ |
5581 | add_infile (name: "help-dummy", language: "c"); |
5582 | } |
5583 | |
5584 | /* Decide if undefined variable references are allowed in specs. */ |
5585 | |
5586 | /* -v alone is safe. --version and --help alone or together are safe. Note |
5587 | that -v would make them unsafe, as they'd then be run for subprocesses as |
5588 | well, the location of which might depend on variables possibly coming |
5589 | from self-specs. Note also that the command name is counted in |
5590 | decoded_options_count. */ |
5591 | |
5592 | unsigned help_version_count = 0; |
5593 | |
5594 | if (print_version) |
5595 | help_version_count++; |
5596 | |
5597 | if (print_help_list) |
5598 | help_version_count++; |
5599 | |
5600 | spec_undefvar_allowed = |
5601 | ((verbose_flag && decoded_options_count == 2) |
5602 | || help_version_count == decoded_options_count - 1); |
5603 | |
5604 | alloc_switch (); |
5605 | switches[n_switches].part1 = 0; |
5606 | alloc_infile (); |
5607 | infiles[n_infiles].name = 0; |
5608 | } |
5609 | |
5610 | /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS |
5611 | and place that in the environment. */ |
5612 | |
5613 | static void |
5614 | set_collect_gcc_options (void) |
5615 | { |
5616 | int i; |
5617 | int first_time; |
5618 | |
5619 | /* Build COLLECT_GCC_OPTIONS to have all of the options specified to |
5620 | the compiler. */ |
5621 | obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=", |
5622 | sizeof ("COLLECT_GCC_OPTIONS=") - 1); |
5623 | |
5624 | first_time = true; |
5625 | for (i = 0; (int) i < n_switches; i++) |
5626 | { |
5627 | const char *const *args; |
5628 | const char *p, *q; |
5629 | if (!first_time) |
5630 | obstack_grow (&collect_obstack, " ", 1); |
5631 | |
5632 | first_time = false; |
5633 | |
5634 | /* Ignore elided switches. */ |
5635 | if ((switches[i].live_cond |
5636 | & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC)) |
5637 | == SWITCH_IGNORE) |
5638 | continue; |
5639 | |
5640 | obstack_grow (&collect_obstack, "'-", 2); |
5641 | q = switches[i].part1; |
5642 | while ((p = strchr (s: q, c: '\''))) |
5643 | { |
5644 | obstack_grow (&collect_obstack, q, p - q); |
5645 | obstack_grow (&collect_obstack, "'\\''", 4); |
5646 | q = ++p; |
5647 | } |
5648 | obstack_grow (&collect_obstack, q, strlen (q)); |
5649 | obstack_grow (&collect_obstack, "'", 1); |
5650 | |
5651 | for (args = switches[i].args; args && *args; args++) |
5652 | { |
5653 | obstack_grow (&collect_obstack, " '", 2); |
5654 | q = *args; |
5655 | while ((p = strchr (s: q, c: '\''))) |
5656 | { |
5657 | obstack_grow (&collect_obstack, q, p - q); |
5658 | obstack_grow (&collect_obstack, "'\\''", 4); |
5659 | q = ++p; |
5660 | } |
5661 | obstack_grow (&collect_obstack, q, strlen (q)); |
5662 | obstack_grow (&collect_obstack, "'", 1); |
5663 | } |
5664 | } |
5665 | |
5666 | if (dumpdir) |
5667 | { |
5668 | if (!first_time) |
5669 | obstack_grow (&collect_obstack, " ", 1); |
5670 | first_time = false; |
5671 | |
5672 | obstack_grow (&collect_obstack, "'-dumpdir' '", 12); |
5673 | const char *p, *q; |
5674 | |
5675 | q = dumpdir; |
5676 | while ((p = strchr (s: q, c: '\''))) |
5677 | { |
5678 | obstack_grow (&collect_obstack, q, p - q); |
5679 | obstack_grow (&collect_obstack, "'\\''", 4); |
5680 | q = ++p; |
5681 | } |
5682 | obstack_grow (&collect_obstack, q, strlen (q)); |
5683 | |
5684 | obstack_grow (&collect_obstack, "'", 1); |
5685 | } |
5686 | |
5687 | obstack_grow (&collect_obstack, "\0", 1); |
5688 | xputenv (XOBFINISH (&collect_obstack, char *)); |
5689 | } |
5690 | |
5691 | /* Process a spec string, accumulating and running commands. */ |
5692 | |
5693 | /* These variables describe the input file name. |
5694 | input_file_number is the index on outfiles of this file, |
5695 | so that the output file name can be stored for later use by %o. |
5696 | input_basename is the start of the part of the input file |
5697 | sans all directory names, and basename_length is the number |
5698 | of characters starting there excluding the suffix .c or whatever. */ |
5699 | |
5700 | static const char *gcc_input_filename; |
5701 | static int input_file_number; |
5702 | size_t input_filename_length; |
5703 | static int basename_length; |
5704 | static int suffixed_basename_length; |
5705 | static const char *input_basename; |
5706 | static const char *input_suffix; |
5707 | #ifndef HOST_LACKS_INODE_NUMBERS |
5708 | static struct stat input_stat; |
5709 | #endif |
5710 | static int input_stat_set; |
5711 | |
5712 | /* The compiler used to process the current input file. */ |
5713 | static struct compiler *input_file_compiler; |
5714 | |
5715 | /* These are variables used within do_spec and do_spec_1. */ |
5716 | |
5717 | /* Nonzero if an arg has been started and not yet terminated |
5718 | (with space, tab or newline). */ |
5719 | static int arg_going; |
5720 | |
5721 | /* Nonzero means %d or %g has been seen; the next arg to be terminated |
5722 | is a temporary file name. */ |
5723 | static int delete_this_arg; |
5724 | |
5725 | /* Nonzero means %w has been seen; the next arg to be terminated |
5726 | is the output file name of this compilation. */ |
5727 | static int this_is_output_file; |
5728 | |
5729 | /* Nonzero means %s has been seen; the next arg to be terminated |
5730 | is the name of a library file and we should try the standard |
5731 | search dirs for it. */ |
5732 | static int this_is_library_file; |
5733 | |
5734 | /* Nonzero means %T has been seen; the next arg to be terminated |
5735 | is the name of a linker script and we should try all of the |
5736 | standard search dirs for it. If it is found insert a --script |
5737 | command line switch and then substitute the full path in place, |
5738 | otherwise generate an error message. */ |
5739 | static int this_is_linker_script; |
5740 | |
5741 | /* Nonzero means that the input of this command is coming from a pipe. */ |
5742 | static int input_from_pipe; |
5743 | |
5744 | /* Nonnull means substitute this for any suffix when outputting a switches |
5745 | arguments. */ |
5746 | static const char *suffix_subst; |
5747 | |
5748 | /* If there is an argument being accumulated, terminate it and store it. */ |
5749 | |
5750 | static void |
5751 | end_going_arg (void) |
5752 | { |
5753 | if (arg_going) |
5754 | { |
5755 | const char *string; |
5756 | |
5757 | obstack_1grow (&obstack, 0); |
5758 | string = XOBFINISH (&obstack, const char *); |
5759 | if (this_is_library_file) |
5760 | string = find_file (string); |
5761 | if (this_is_linker_script) |
5762 | { |
5763 | char * full_script_path = find_a_file (pprefix: &startfile_prefixes, name: string, R_OK, do_multi: true); |
5764 | |
5765 | if (full_script_path == NULL) |
5766 | { |
5767 | error ("unable to locate default linker script %qs in the library search paths", string); |
5768 | /* Script was not found on search path. */ |
5769 | return; |
5770 | } |
5771 | store_arg (arg: "--script", delete_always: false, delete_failure: false); |
5772 | string = full_script_path; |
5773 | } |
5774 | store_arg (arg: string, delete_always: delete_this_arg, delete_failure: this_is_output_file); |
5775 | if (this_is_output_file) |
5776 | outfiles[input_file_number] = string; |
5777 | arg_going = 0; |
5778 | } |
5779 | } |
5780 | |
5781 | |
5782 | /* Parse the WRAPPER string which is a comma separated list of the command line |
5783 | and insert them into the beginning of argbuf. */ |
5784 | |
5785 | static void |
5786 | insert_wrapper (const char *wrapper) |
5787 | { |
5788 | int n = 0; |
5789 | int i; |
5790 | char *buf = xstrdup (wrapper); |
5791 | char *p = buf; |
5792 | unsigned int old_length = argbuf.length (); |
5793 | |
5794 | do |
5795 | { |
5796 | n++; |
5797 | while (*p == ',') |
5798 | p++; |
5799 | } |
5800 | while ((p = strchr (s: p, c: ',')) != NULL); |
5801 | |
5802 | argbuf.safe_grow (len: old_length + n, exact: true); |
5803 | memmove (dest: argbuf.address () + n, |
5804 | src: argbuf.address (), |
5805 | n: old_length * sizeof (const_char_p)); |
5806 | |
5807 | i = 0; |
5808 | p = buf; |
5809 | do |
5810 | { |
5811 | while (*p == ',') |
5812 | { |
5813 | *p = 0; |
5814 | p++; |
5815 | } |
5816 | argbuf[i] = p; |
5817 | i++; |
5818 | } |
5819 | while ((p = strchr (s: p, c: ',')) != NULL); |
5820 | gcc_assert (i == n); |
5821 | } |
5822 | |
5823 | /* Process the spec SPEC and run the commands specified therein. |
5824 | Returns 0 if the spec is successfully processed; -1 if failed. */ |
5825 | |
5826 | int |
5827 | do_spec (const char *spec) |
5828 | { |
5829 | int value; |
5830 | |
5831 | value = do_spec_2 (spec, NULL); |
5832 | |
5833 | /* Force out any unfinished command. |
5834 | If -pipe, this forces out the last command if it ended in `|'. */ |
5835 | if (value == 0) |
5836 | { |
5837 | if (argbuf.length () > 0 |
5838 | && !strcmp (s1: argbuf.last (), s2: "|")) |
5839 | argbuf.pop (); |
5840 | |
5841 | set_collect_gcc_options (); |
5842 | |
5843 | if (argbuf.length () > 0) |
5844 | value = execute (); |
5845 | } |
5846 | |
5847 | return value; |
5848 | } |
5849 | |
5850 | /* Process the spec SPEC, with SOFT_MATCHED_PART designating the current value |
5851 | of a matched * pattern which may be re-injected by way of %*. */ |
5852 | |
5853 | static int |
5854 | do_spec_2 (const char *spec, const char *soft_matched_part) |
5855 | { |
5856 | int result; |
5857 | |
5858 | clear_args (); |
5859 | arg_going = 0; |
5860 | delete_this_arg = 0; |
5861 | this_is_output_file = 0; |
5862 | this_is_library_file = 0; |
5863 | this_is_linker_script = 0; |
5864 | input_from_pipe = 0; |
5865 | suffix_subst = NULL; |
5866 | |
5867 | result = do_spec_1 (spec, 0, soft_matched_part); |
5868 | |
5869 | end_going_arg (); |
5870 | |
5871 | return result; |
5872 | } |
5873 | |
5874 | /* Process the given spec string and add any new options to the end |
5875 | of the switches/n_switches array. */ |
5876 | |
5877 | static void |
5878 | do_option_spec (const char *name, const char *spec) |
5879 | { |
5880 | unsigned int i, value_count, value_len; |
5881 | const char *p, *q, *value; |
5882 | char *tmp_spec, *tmp_spec_p; |
5883 | |
5884 | if (configure_default_options[0].name == NULL) |
5885 | return; |
5886 | |
5887 | for (i = 0; i < ARRAY_SIZE (configure_default_options); i++) |
5888 | if (strcmp (s1: configure_default_options[i].name, s2: name) == 0) |
5889 | break; |
5890 | if (i == ARRAY_SIZE (configure_default_options)) |
5891 | return; |
5892 | |
5893 | value = configure_default_options[i].value; |
5894 | value_len = strlen (s: value); |
5895 | |
5896 | /* Compute the size of the final spec. */ |
5897 | value_count = 0; |
5898 | p = spec; |
5899 | while ((p = strstr (haystack: p, needle: "%(VALUE)")) != NULL) |
5900 | { |
5901 | p ++; |
5902 | value_count ++; |
5903 | } |
5904 | |
5905 | /* Replace each %(VALUE) by the specified value. */ |
5906 | tmp_spec = (char *) alloca (strlen (spec) + 1 |
5907 | + value_count * (value_len - strlen ("%(VALUE)"))); |
5908 | tmp_spec_p = tmp_spec; |
5909 | q = spec; |
5910 | while ((p = strstr (haystack: q, needle: "%(VALUE)")) != NULL) |
5911 | { |
5912 | memcpy (dest: tmp_spec_p, src: q, n: p - q); |
5913 | tmp_spec_p = tmp_spec_p + (p - q); |
5914 | memcpy (dest: tmp_spec_p, src: value, n: value_len); |
5915 | tmp_spec_p += value_len; |
5916 | q = p + strlen (s: "%(VALUE)"); |
5917 | } |
5918 | strcpy (dest: tmp_spec_p, src: q); |
5919 | |
5920 | do_self_spec (tmp_spec); |
5921 | } |
5922 | |
5923 | /* Process the given spec string and add any new options to the end |
5924 | of the switches/n_switches array. */ |
5925 | |
5926 | static void |
5927 | do_self_spec (const char *spec) |
5928 | { |
5929 | int i; |
5930 | |
5931 | do_spec_2 (spec, NULL); |
5932 | do_spec_1 (" ", 0, NULL); |
5933 | |
5934 | /* Mark %<S switches processed by do_self_spec to be ignored permanently. |
5935 | do_self_specs adds the replacements to switches array, so it shouldn't |
5936 | be processed afterwards. */ |
5937 | for (i = 0; i < n_switches; i++) |
5938 | if ((switches[i].live_cond & SWITCH_IGNORE)) |
5939 | switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY; |
5940 | |
5941 | if (argbuf.length () > 0) |
5942 | { |
5943 | const char **argbuf_copy; |
5944 | struct cl_decoded_option *decoded_options; |
5945 | struct cl_option_handlers handlers; |
5946 | unsigned int decoded_options_count; |
5947 | unsigned int j; |
5948 | |
5949 | /* Create a copy of argbuf with a dummy argv[0] entry for |
5950 | decode_cmdline_options_to_array. */ |
5951 | argbuf_copy = XNEWVEC (const char *, |
5952 | argbuf.length () + 1); |
5953 | argbuf_copy[0] = ""; |
5954 | memcpy (dest: argbuf_copy + 1, src: argbuf.address (), |
5955 | n: argbuf.length () * sizeof (const char *)); |
5956 | |
5957 | decode_cmdline_options_to_array (argc: argbuf.length () + 1, |
5958 | argv: argbuf_copy, |
5959 | CL_DRIVER, decoded_options: &decoded_options, |
5960 | decoded_options_count: &decoded_options_count); |
5961 | free (ptr: argbuf_copy); |
5962 | |
5963 | set_option_handlers (&handlers); |
5964 | |
5965 | for (j = 1; j < decoded_options_count; j++) |
5966 | { |
5967 | switch (decoded_options[j].opt_index) |
5968 | { |
5969 | case OPT_SPECIAL_input_file: |
5970 | /* Specs should only generate options, not input |
5971 | files. */ |
5972 | if (strcmp (s1: decoded_options[j].arg, s2: "-") != 0) |
5973 | fatal_error (input_location, |
5974 | "switch %qs does not start with %<-%>", |
5975 | decoded_options[j].arg); |
5976 | else |
5977 | fatal_error (input_location, |
5978 | "spec-generated switch is just %<-%>"); |
5979 | break; |
5980 | |
5981 | case OPT_fcompare_debug_second: |
5982 | case OPT_fcompare_debug: |
5983 | case OPT_fcompare_debug_: |
5984 | case OPT_o: |
5985 | /* Avoid duplicate processing of some options from |
5986 | compare-debug specs; just save them here. */ |
5987 | save_switch (opt: decoded_options[j].canonical_option[0], |
5988 | n_args: (decoded_options[j].canonical_option_num_elements |
5989 | - 1), |
5990 | args: &decoded_options[j].canonical_option[1], validated: false, known: true); |
5991 | break; |
5992 | |
5993 | default: |
5994 | read_cmdline_option (opts: &global_options, opts_set: &global_options_set, |
5995 | decoded: decoded_options + j, UNKNOWN_LOCATION, |
5996 | CL_DRIVER, handlers: &handlers, dc: global_dc); |
5997 | break; |
5998 | } |
5999 | } |
6000 | |
6001 | free (ptr: decoded_options); |
6002 | |
6003 | alloc_switch (); |
6004 | switches[n_switches].part1 = 0; |
6005 | } |
6006 | } |
6007 | |
6008 | /* Callback for processing %D and %I specs. */ |
6009 | |
6010 | struct spec_path_info { |
6011 | const char *option; |
6012 | const char *append; |
6013 | size_t append_len; |
6014 | bool omit_relative; |
6015 | bool separate_options; |
6016 | bool realpaths; |
6017 | }; |
6018 | |
6019 | static void * |
6020 | spec_path (char *path, void *data) |
6021 | { |
6022 | struct spec_path_info *info = (struct spec_path_info *) data; |
6023 | size_t len = 0; |
6024 | char save = 0; |
6025 | |
6026 | /* The path must exist; we want to resolve it to the realpath so that this |
6027 | can be embedded as a runpath. */ |
6028 | if (info->realpaths) |
6029 | path = lrealpath (path); |
6030 | |
6031 | /* However, if we failed to resolve it - perhaps because there was a bogus |
6032 | -B option on the command line, then punt on this entry. */ |
6033 | if (!path) |
6034 | return NULL; |
6035 | |
6036 | if (info->omit_relative && !IS_ABSOLUTE_PATH (path)) |
6037 | return NULL; |
6038 | |
6039 | if (info->append_len != 0) |
6040 | { |
6041 | len = strlen (s: path); |
6042 | memcpy (dest: path + len, src: info->append, n: info->append_len + 1); |
6043 | } |
6044 | |
6045 | if (!is_directory (path)) |
6046 | return NULL; |
6047 | |
6048 | do_spec_1 (info->option, 1, NULL); |
6049 | if (info->separate_options) |
6050 | do_spec_1 (" ", 0, NULL); |
6051 | |
6052 | if (info->append_len == 0) |
6053 | { |
6054 | len = strlen (s: path); |
6055 | save = path[len - 1]; |
6056 | if (IS_DIR_SEPARATOR (path[len - 1])) |
6057 | path[len - 1] = '\0'; |
6058 | } |
6059 | |
6060 | do_spec_1 (path, 1, NULL); |
6061 | do_spec_1 (" ", 0, NULL); |
6062 | |
6063 | /* Must not damage the original path. */ |
6064 | if (info->append_len == 0) |
6065 | path[len - 1] = save; |
6066 | |
6067 | return NULL; |
6068 | } |
6069 | |
6070 | /* True if we should compile INFILE. */ |
6071 | |
6072 | static bool |
6073 | compile_input_file_p (struct infile *infile) |
6074 | { |
6075 | if ((!infile->language) || (infile->language[0] != '*')) |
6076 | if (infile->incompiler == input_file_compiler) |
6077 | return true; |
6078 | return false; |
6079 | } |
6080 | |
6081 | /* Process each member of VEC as a spec. */ |
6082 | |
6083 | static void |
6084 | do_specs_vec (vec<char_p> vec) |
6085 | { |
6086 | for (char *opt : vec) |
6087 | { |
6088 | do_spec_1 (opt, 1, NULL); |
6089 | /* Make each accumulated option a separate argument. */ |
6090 | do_spec_1 (" ", 0, NULL); |
6091 | } |
6092 | } |
6093 | |
6094 | /* Add options passed via -Xassembler or -Wa to COLLECT_AS_OPTIONS. */ |
6095 | |
6096 | static void |
6097 | putenv_COLLECT_AS_OPTIONS (vec<char_p> vec) |
6098 | { |
6099 | if (vec.is_empty ()) |
6100 | return; |
6101 | |
6102 | obstack_init (&collect_obstack); |
6103 | obstack_grow (&collect_obstack, "COLLECT_AS_OPTIONS=", |
6104 | strlen ("COLLECT_AS_OPTIONS=")); |
6105 | |
6106 | char *opt; |
6107 | unsigned ix; |
6108 | |
6109 | FOR_EACH_VEC_ELT (vec, ix, opt) |
6110 | { |
6111 | obstack_1grow (&collect_obstack, '\''); |
6112 | obstack_grow (&collect_obstack, opt, strlen (opt)); |
6113 | obstack_1grow (&collect_obstack, '\''); |
6114 | if (ix < vec.length () - 1) |
6115 | obstack_1grow(&collect_obstack, ' '); |
6116 | } |
6117 | |
6118 | obstack_1grow (&collect_obstack, '\0'); |
6119 | xputenv (XOBFINISH (&collect_obstack, char *)); |
6120 | } |
6121 | |
6122 | /* Process the sub-spec SPEC as a portion of a larger spec. |
6123 | This is like processing a whole spec except that we do |
6124 | not initialize at the beginning and we do not supply a |
6125 | newline by default at the end. |
6126 | INSWITCH nonzero means don't process %-sequences in SPEC; |
6127 | in this case, % is treated as an ordinary character. |
6128 | This is used while substituting switches. |
6129 | INSWITCH nonzero also causes SPC not to terminate an argument. |
6130 | |
6131 | Value is zero unless a line was finished |
6132 | and the command on that line reported an error. */ |
6133 | |
6134 | static int |
6135 | do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part) |
6136 | { |
6137 | const char *p = spec; |
6138 | int c; |
6139 | int i; |
6140 | int value; |
6141 | |
6142 | /* If it's an empty string argument to a switch, keep it as is. */ |
6143 | if (inswitch && !*p) |
6144 | arg_going = 1; |
6145 | |
6146 | while ((c = *p++)) |
6147 | /* If substituting a switch, treat all chars like letters. |
6148 | Otherwise, NL, SPC, TAB and % are special. */ |
6149 | switch (inswitch ? 'a' : c) |
6150 | { |
6151 | case '\n': |
6152 | end_going_arg (); |
6153 | |
6154 | if (argbuf.length () > 0 |
6155 | && !strcmp (s1: argbuf.last (), s2: "|")) |
6156 | { |
6157 | /* A `|' before the newline means use a pipe here, |
6158 | but only if -pipe was specified. |
6159 | Otherwise, execute now and don't pass the `|' as an arg. */ |
6160 | if (use_pipes) |
6161 | { |
6162 | input_from_pipe = 1; |
6163 | break; |
6164 | } |
6165 | else |
6166 | argbuf.pop (); |
6167 | } |
6168 | |
6169 | set_collect_gcc_options (); |
6170 | |
6171 | if (argbuf.length () > 0) |
6172 | { |
6173 | value = execute (); |
6174 | if (value) |
6175 | return value; |
6176 | } |
6177 | /* Reinitialize for a new command, and for a new argument. */ |
6178 | clear_args (); |
6179 | arg_going = 0; |
6180 | delete_this_arg = 0; |
6181 | this_is_output_file = 0; |
6182 | this_is_library_file = 0; |
6183 | this_is_linker_script = 0; |
6184 | input_from_pipe = 0; |
6185 | break; |
6186 | |
6187 | case '|': |
6188 | end_going_arg (); |
6189 | |
6190 | /* Use pipe */ |
6191 | obstack_1grow (&obstack, c); |
6192 | arg_going = 1; |
6193 | break; |
6194 | |
6195 | case '\t': |
6196 | case ' ': |
6197 | end_going_arg (); |
6198 | |
6199 | /* Reinitialize for a new argument. */ |
6200 | delete_this_arg = 0; |
6201 | this_is_output_file = 0; |
6202 | this_is_library_file = 0; |
6203 | this_is_linker_script = 0; |
6204 | break; |
6205 | |
6206 | case '%': |
6207 | switch (c = *p++) |
6208 | { |
6209 | case 0: |
6210 | fatal_error (input_location, "spec %qs invalid", spec); |
6211 | |
6212 | case 'b': |
6213 | /* Don't use %b in the linker command. */ |
6214 | gcc_assert (suffixed_basename_length); |
6215 | if (!this_is_output_file && dumpdir_length) |
6216 | obstack_grow (&obstack, dumpdir, dumpdir_length); |
6217 | if (this_is_output_file || !outbase_length) |
6218 | obstack_grow (&obstack, input_basename, basename_length); |
6219 | else |
6220 | obstack_grow (&obstack, outbase, outbase_length); |
6221 | if (compare_debug < 0) |
6222 | obstack_grow (&obstack, ".gk", 3); |
6223 | arg_going = 1; |
6224 | break; |
6225 | |
6226 | case 'B': |
6227 | /* Don't use %B in the linker command. */ |
6228 | gcc_assert (suffixed_basename_length); |
6229 | if (!this_is_output_file && dumpdir_length) |
6230 | obstack_grow (&obstack, dumpdir, dumpdir_length); |
6231 | if (this_is_output_file || !outbase_length) |
6232 | obstack_grow (&obstack, input_basename, basename_length); |
6233 | else |
6234 | obstack_grow (&obstack, outbase, outbase_length); |
6235 | if (compare_debug < 0) |
6236 | obstack_grow (&obstack, ".gk", 3); |
6237 | obstack_grow (&obstack, input_basename + basename_length, |
6238 | suffixed_basename_length - basename_length); |
6239 | |
6240 | arg_going = 1; |
6241 | break; |
6242 | |
6243 | case 'd': |
6244 | delete_this_arg = 2; |
6245 | break; |
6246 | |
6247 | /* Dump out the directories specified with LIBRARY_PATH, |
6248 | followed by the absolute directories |
6249 | that we search for startfiles. */ |
6250 | case 'D': |
6251 | { |
6252 | struct spec_path_info info; |
6253 | |
6254 | info.option = "-L"; |
6255 | info.append_len = 0; |
6256 | #ifdef RELATIVE_PREFIX_NOT_LINKDIR |
6257 | /* Used on systems which record the specified -L dirs |
6258 | and use them to search for dynamic linking. |
6259 | Relative directories always come from -B, |
6260 | and it is better not to use them for searching |
6261 | at run time. In particular, stage1 loses. */ |
6262 | info.omit_relative = true; |
6263 | #else |
6264 | info.omit_relative = false; |
6265 | #endif |
6266 | info.separate_options = false; |
6267 | info.realpaths = false; |
6268 | |
6269 | for_each_path (paths: &startfile_prefixes, do_multi: true, extra_space: 0, callback: spec_path, callback_info: &info); |
6270 | } |
6271 | break; |
6272 | |
6273 | case 'P': |
6274 | { |
6275 | struct spec_path_info info; |
6276 | |
6277 | info.option = RUNPATH_OPTION; |
6278 | info.append_len = 0; |
6279 | info.omit_relative = false; |
6280 | info.separate_options = true; |
6281 | /* We want to embed the actual paths that have the libraries. */ |
6282 | info.realpaths = true; |
6283 | |
6284 | for_each_path (paths: &startfile_prefixes, do_multi: true, extra_space: 0, callback: spec_path, callback_info: &info); |
6285 | } |
6286 | break; |
6287 | |
6288 | case 'e': |
6289 | /* %efoo means report an error with `foo' as error message |
6290 | and don't execute any more commands for this file. */ |
6291 | { |
6292 | const char *q = p; |
6293 | char *buf; |
6294 | while (*p != 0 && *p != '\n') |
6295 | p++; |
6296 | buf = (char *) alloca (p - q + 1); |
6297 | strncpy (dest: buf, src: q, n: p - q); |
6298 | buf[p - q] = 0; |
6299 | error ("%s", _(buf)); |
6300 | return -1; |
6301 | } |
6302 | break; |
6303 | case 'n': |
6304 | /* %nfoo means report a notice with `foo' on stderr. */ |
6305 | { |
6306 | const char *q = p; |
6307 | char *buf; |
6308 | while (*p != 0 && *p != '\n') |
6309 | p++; |
6310 | buf = (char *) alloca (p - q + 1); |
6311 | strncpy (dest: buf, src: q, n: p - q); |
6312 | buf[p - q] = 0; |
6313 | inform (UNKNOWN_LOCATION, "%s", _(buf)); |
6314 | if (*p) |
6315 | p++; |
6316 | } |
6317 | break; |
6318 | |
6319 | case 'j': |
6320 | { |
6321 | struct stat st; |
6322 | |
6323 | /* If save_temps_flag is off, and the HOST_BIT_BUCKET is |
6324 | defined, and it is not a directory, and it is |
6325 | writable, use it. Otherwise, treat this like any |
6326 | other temporary file. */ |
6327 | |
6328 | if ((!save_temps_flag) |
6329 | && (stat (HOST_BIT_BUCKET, buf: &st) == 0) && (!S_ISDIR (st.st_mode)) |
6330 | && (access (HOST_BIT_BUCKET, W_OK) == 0)) |
6331 | { |
6332 | obstack_grow (&obstack, HOST_BIT_BUCKET, |
6333 | strlen (HOST_BIT_BUCKET)); |
6334 | delete_this_arg = 0; |
6335 | arg_going = 1; |
6336 | break; |
6337 | } |
6338 | } |
6339 | goto create_temp_file; |
6340 | case '|': |
6341 | if (use_pipes) |
6342 | { |
6343 | obstack_1grow (&obstack, '-'); |
6344 | delete_this_arg = 0; |
6345 | arg_going = 1; |
6346 | |
6347 | /* consume suffix */ |
6348 | while (*p == '.' || ISALNUM ((unsigned char) *p)) |
6349 | p++; |
6350 | if (p[0] == '%' && p[1] == 'O') |
6351 | p += 2; |
6352 | |
6353 | break; |
6354 | } |
6355 | goto create_temp_file; |
6356 | case 'm': |
6357 | if (use_pipes) |
6358 | { |
6359 | /* consume suffix */ |
6360 | while (*p == '.' || ISALNUM ((unsigned char) *p)) |
6361 | p++; |
6362 | if (p[0] == '%' && p[1] == 'O') |
6363 | p += 2; |
6364 | |
6365 | break; |
6366 | } |
6367 | goto create_temp_file; |
6368 | case 'g': |
6369 | case 'u': |
6370 | case 'U': |
6371 | create_temp_file: |
6372 | { |
6373 | struct temp_name *t; |
6374 | int suffix_length; |
6375 | const char *suffix = p; |
6376 | char *saved_suffix = NULL; |
6377 | |
6378 | while (*p == '.' || ISALNUM ((unsigned char) *p)) |
6379 | p++; |
6380 | suffix_length = p - suffix; |
6381 | if (p[0] == '%' && p[1] == 'O') |
6382 | { |
6383 | p += 2; |
6384 | /* We don't support extra suffix characters after %O. */ |
6385 | if (*p == '.' || ISALNUM ((unsigned char) *p)) |
6386 | fatal_error (input_location, |
6387 | "spec %qs has invalid %<%%0%c%>", spec, *p); |
6388 | if (suffix_length == 0) |
6389 | suffix = TARGET_OBJECT_SUFFIX; |
6390 | else |
6391 | { |
6392 | saved_suffix |
6393 | = XNEWVEC (char, suffix_length |
6394 | + strlen (TARGET_OBJECT_SUFFIX) + 1); |
6395 | strncpy (dest: saved_suffix, src: suffix, n: suffix_length); |
6396 | strcpy (dest: saved_suffix + suffix_length, |
6397 | TARGET_OBJECT_SUFFIX); |
6398 | } |
6399 | suffix_length += strlen (TARGET_OBJECT_SUFFIX); |
6400 | } |
6401 | |
6402 | if (compare_debug < 0) |
6403 | { |
6404 | suffix = concat (".gk", suffix, NULL); |
6405 | suffix_length += 3; |
6406 | } |
6407 | |
6408 | /* If -save-temps was specified, use that for the |
6409 | temp file. */ |
6410 | if (save_temps_flag) |
6411 | { |
6412 | char *tmp; |
6413 | bool adjusted_suffix = false; |
6414 | if (suffix_length |
6415 | && !outbase_length && !basename_length |
6416 | && !dumpdir_trailing_dash_added) |
6417 | { |
6418 | adjusted_suffix = true; |
6419 | suffix++; |
6420 | suffix_length--; |
6421 | } |
6422 | temp_filename_length |
6423 | = dumpdir_length + suffix_length + 1; |
6424 | if (outbase_length) |
6425 | temp_filename_length += outbase_length; |
6426 | else |
6427 | temp_filename_length += basename_length; |
6428 | tmp = (char *) alloca (temp_filename_length); |
6429 | if (dumpdir_length) |
6430 | memcpy (dest: tmp, src: dumpdir, n: dumpdir_length); |
6431 | if (outbase_length) |
6432 | memcpy (dest: tmp + dumpdir_length, src: outbase, |
6433 | n: outbase_length); |
6434 | else if (basename_length) |
6435 | memcpy (dest: tmp + dumpdir_length, src: input_basename, |
6436 | n: basename_length); |
6437 | memcpy (dest: tmp + temp_filename_length - suffix_length - 1, |
6438 | src: suffix, n: suffix_length); |
6439 | if (adjusted_suffix) |
6440 | { |
6441 | adjusted_suffix = false; |
6442 | suffix--; |
6443 | suffix_length++; |
6444 | } |
6445 | tmp[temp_filename_length - 1] = '\0'; |
6446 | temp_filename = tmp; |
6447 | |
6448 | if (filename_cmp (s1: temp_filename, s2: gcc_input_filename) != 0) |
6449 | { |
6450 | #ifndef HOST_LACKS_INODE_NUMBERS |
6451 | struct stat st_temp; |
6452 | |
6453 | /* Note, set_input() resets input_stat_set to 0. */ |
6454 | if (input_stat_set == 0) |
6455 | { |
6456 | input_stat_set = stat (file: gcc_input_filename, |
6457 | buf: &input_stat); |
6458 | if (input_stat_set >= 0) |
6459 | input_stat_set = 1; |
6460 | } |
6461 | |
6462 | /* If we have the stat for the gcc_input_filename |
6463 | and we can do the stat for the temp_filename |
6464 | then the they could still refer to the same |
6465 | file if st_dev/st_ino's are the same. */ |
6466 | if (input_stat_set != 1 |
6467 | || stat (file: temp_filename, buf: &st_temp) < 0 |
6468 | || input_stat.st_dev != st_temp.st_dev |
6469 | || input_stat.st_ino != st_temp.st_ino) |
6470 | #else |
6471 | /* Just compare canonical pathnames. */ |
6472 | char* input_realname = lrealpath (gcc_input_filename); |
6473 | char* temp_realname = lrealpath (temp_filename); |
6474 | bool files_differ = filename_cmp (input_realname, temp_realname); |
6475 | free (input_realname); |
6476 | free (temp_realname); |
6477 | if (files_differ) |
6478 | #endif |
6479 | { |
6480 | temp_filename |
6481 | = save_string (temp_filename, |
6482 | temp_filename_length - 1); |
6483 | obstack_grow (&obstack, temp_filename, |
6484 | temp_filename_length); |
6485 | arg_going = 1; |
6486 | delete_this_arg = 0; |
6487 | break; |
6488 | } |
6489 | } |
6490 | } |
6491 | |
6492 | /* See if we already have an association of %g/%u/%U and |
6493 | suffix. */ |
6494 | for (t = temp_names; t; t = t->next) |
6495 | if (t->length == suffix_length |
6496 | && strncmp (s1: t->suffix, s2: suffix, n: suffix_length) == 0 |
6497 | && t->unique == (c == 'u' || c == 'U' || c == 'j')) |
6498 | break; |
6499 | |
6500 | /* Make a new association if needed. %u and %j |
6501 | require one. */ |
6502 | if (t == 0 || c == 'u' || c == 'j') |
6503 | { |
6504 | if (t == 0) |
6505 | { |
6506 | t = XNEW (struct temp_name); |
6507 | t->next = temp_names; |
6508 | temp_names = t; |
6509 | } |
6510 | t->length = suffix_length; |
6511 | if (saved_suffix) |
6512 | { |
6513 | t->suffix = saved_suffix; |
6514 | saved_suffix = NULL; |
6515 | } |
6516 | else |
6517 | t->suffix = save_string (suffix, suffix_length); |
6518 | t->unique = (c == 'u' || c == 'U' || c == 'j'); |
6519 | temp_filename = make_temp_file (t->suffix); |
6520 | temp_filename_length = strlen (s: temp_filename); |
6521 | t->filename = temp_filename; |
6522 | t->filename_length = temp_filename_length; |
6523 | } |
6524 | |
6525 | free (ptr: saved_suffix); |
6526 | |
6527 | obstack_grow (&obstack, t->filename, t->filename_length); |
6528 | delete_this_arg = 1; |
6529 | } |
6530 | arg_going = 1; |
6531 | break; |
6532 | |
6533 | case 'i': |
6534 | if (combine_inputs) |
6535 | { |
6536 | /* We are going to expand `%i' into `@FILE', where FILE |
6537 | is a newly-created temporary filename. The filenames |
6538 | that would usually be expanded in place of %o will be |
6539 | written to the temporary file. */ |
6540 | if (at_file_supplied) |
6541 | open_at_file (); |
6542 | |
6543 | for (i = 0; (int) i < n_infiles; i++) |
6544 | if (compile_input_file_p (infile: &infiles[i])) |
6545 | { |
6546 | store_arg (arg: infiles[i].name, delete_always: 0, delete_failure: 0); |
6547 | infiles[i].compiled = true; |
6548 | } |
6549 | |
6550 | if (at_file_supplied) |
6551 | close_at_file (); |
6552 | } |
6553 | else |
6554 | { |
6555 | obstack_grow (&obstack, gcc_input_filename, |
6556 | input_filename_length); |
6557 | arg_going = 1; |
6558 | } |
6559 | break; |
6560 | |
6561 | case 'I': |
6562 | { |
6563 | struct spec_path_info info; |
6564 | |
6565 | if (multilib_dir) |
6566 | { |
6567 | do_spec_1 (spec: "-imultilib", inswitch: 1, NULL); |
6568 | /* Make this a separate argument. */ |
6569 | do_spec_1 (spec: " ", inswitch: 0, NULL); |
6570 | do_spec_1 (spec: multilib_dir, inswitch: 1, NULL); |
6571 | do_spec_1 (spec: " ", inswitch: 0, NULL); |
6572 | } |
6573 | |
6574 | if (multiarch_dir) |
6575 | { |
6576 | do_spec_1 (spec: "-imultiarch", inswitch: 1, NULL); |
6577 | /* Make this a separate argument. */ |
6578 | do_spec_1 (spec: " ", inswitch: 0, NULL); |
6579 | do_spec_1 (spec: multiarch_dir, inswitch: 1, NULL); |
6580 | do_spec_1 (spec: " ", inswitch: 0, NULL); |
6581 | } |
6582 | |
6583 | if (gcc_exec_prefix) |
6584 | { |
6585 | do_spec_1 (spec: "-iprefix", inswitch: 1, NULL); |
6586 | /* Make this a separate argument. */ |
6587 | do_spec_1 (spec: " ", inswitch: 0, NULL); |
6588 | do_spec_1 (spec: gcc_exec_prefix, inswitch: 1, NULL); |
6589 | do_spec_1 (spec: " ", inswitch: 0, NULL); |
6590 | } |
6591 | |
6592 | if (target_system_root_changed || |
6593 | (target_system_root && target_sysroot_hdrs_suffix)) |
6594 | { |
6595 | do_spec_1 (spec: "-isysroot", inswitch: 1, NULL); |
6596 | /* Make this a separate argument. */ |
6597 | do_spec_1 (spec: " ", inswitch: 0, NULL); |
6598 | do_spec_1 (spec: target_system_root, inswitch: 1, NULL); |
6599 | if (target_sysroot_hdrs_suffix) |
6600 | do_spec_1 (spec: target_sysroot_hdrs_suffix, inswitch: 1, NULL); |
6601 | do_spec_1 (spec: " ", inswitch: 0, NULL); |
6602 | } |
6603 | |
6604 | info.option = "-isystem"; |
6605 | info.append = "include"; |
6606 | info.append_len = strlen (s: info.append); |
6607 | info.omit_relative = false; |
6608 | info.separate_options = true; |
6609 | info.realpaths = false; |
6610 | |
6611 | for_each_path (paths: &include_prefixes, do_multi: false, extra_space: info.append_len, |
6612 | callback: spec_path, callback_info: &info); |
6613 | |
6614 | info.append = "include-fixed"; |
6615 | if (*sysroot_hdrs_suffix_spec) |
6616 | info.append = concat (info.append, dir_separator_str, |
6617 | multilib_dir, NULL); |
6618 | else if (multiarch_dir) |
6619 | { |
6620 | /* For multiarch, search include-fixed/<multiarch-dir> |
6621 | before include-fixed. */ |
6622 | info.append = concat (info.append, dir_separator_str, |
6623 | multiarch_dir, NULL); |
6624 | info.append_len = strlen (s: info.append); |
6625 | for_each_path (paths: &include_prefixes, do_multi: false, extra_space: info.append_len, |
6626 | callback: spec_path, callback_info: &info); |
6627 | |
6628 | info.append = "include-fixed"; |
6629 | } |
6630 | info.append_len = strlen (s: info.append); |
6631 | for_each_path (paths: &include_prefixes, do_multi: false, extra_space: info.append_len, |
6632 | callback: spec_path, callback_info: &info); |
6633 | } |
6634 | break; |
6635 | |
6636 | case 'o': |
6637 | /* We are going to expand `%o' into `@FILE', where FILE |
6638 | is a newly-created temporary filename. The filenames |
6639 | that would usually be expanded in place of %o will be |
6640 | written to the temporary file. */ |
6641 | if (at_file_supplied) |
6642 | open_at_file (); |
6643 | |
6644 | for (i = 0; i < n_infiles + lang_specific_extra_outfiles; i++) |
6645 | if (outfiles[i]) |
6646 | store_arg (arg: outfiles[i], delete_always: 0, delete_failure: 0); |
6647 | |
6648 | if (at_file_supplied) |
6649 | close_at_file (); |
6650 | break; |
6651 | |
6652 | case 'O': |
6653 | obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); |
6654 | arg_going = 1; |
6655 | break; |
6656 | |
6657 | case 's': |
6658 | this_is_library_file = 1; |
6659 | break; |
6660 | |
6661 | case 'T': |
6662 | this_is_linker_script = 1; |
6663 | break; |
6664 | |
6665 | case 'V': |
6666 | outfiles[input_file_number] = NULL; |
6667 | break; |
6668 | |
6669 | case 'w': |
6670 | this_is_output_file = 1; |
6671 | break; |
6672 | |
6673 | case 'W': |
6674 | { |
6675 | unsigned int cur_index = argbuf.length (); |
6676 | /* Handle the {...} following the %W. */ |
6677 | if (*p != '{') |
6678 | fatal_error (input_location, |
6679 | "spec %qs has invalid %<%%W%c%>", spec, *p); |
6680 | p = handle_braces (p + 1); |
6681 | if (p == 0) |
6682 | return -1; |
6683 | end_going_arg (); |
6684 | /* If any args were output, mark the last one for deletion |
6685 | on failure. */ |
6686 | if (argbuf.length () != cur_index) |
6687 | record_temp_file (filename: argbuf.last (), always_delete: 0, fail_delete: 1); |
6688 | break; |
6689 | } |
6690 | |
6691 | case '@': |
6692 | /* Handle the {...} following the %@. */ |
6693 | if (*p != '{') |
6694 | fatal_error (input_location, |
6695 | "spec %qs has invalid %<%%@%c%>", spec, *p); |
6696 | if (at_file_supplied) |
6697 | open_at_file (); |
6698 | p = handle_braces (p + 1); |
6699 | if (at_file_supplied) |
6700 | close_at_file (); |
6701 | if (p == 0) |
6702 | return -1; |
6703 | break; |
6704 | |
6705 | /* %x{OPTION} records OPTION for %X to output. */ |
6706 | case 'x': |
6707 | { |
6708 | const char *p1 = p; |
6709 | char *string; |
6710 | |
6711 | /* Skip past the option value and make a copy. */ |
6712 | if (*p != '{') |
6713 | fatal_error (input_location, |
6714 | "spec %qs has invalid %<%%x%c%>", spec, *p); |
6715 | while (*p++ != '}') |
6716 | ; |
6717 | string = save_string (p1 + 1, p - p1 - 2); |
6718 | |
6719 | /* See if we already recorded this option. */ |
6720 | for (const char *opt : linker_options) |
6721 | if (! strcmp (s1: string, s2: opt)) |
6722 | { |
6723 | free (ptr: string); |
6724 | return 0; |
6725 | } |
6726 | |
6727 | /* This option is new; add it. */ |
6728 | add_linker_option (option: string, len: strlen (s: string)); |
6729 | free (ptr: string); |
6730 | } |
6731 | break; |
6732 | |
6733 | /* Dump out the options accumulated previously using %x. */ |
6734 | case 'X': |
6735 | do_specs_vec (vec: linker_options); |
6736 | break; |
6737 | |
6738 | /* Dump out the options accumulated previously using -Wa,. */ |
6739 | case 'Y': |
6740 | do_specs_vec (vec: assembler_options); |
6741 | break; |
6742 | |
6743 | /* Dump out the options accumulated previously using -Wp,. */ |
6744 | case 'Z': |
6745 | do_specs_vec (vec: preprocessor_options); |
6746 | break; |
6747 | |
6748 | /* Here are digits and numbers that just process |
6749 | a certain constant string as a spec. */ |
6750 | |
6751 | case '1': |
6752 | value = do_spec_1 (spec: cc1_spec, inswitch: 0, NULL); |
6753 | if (value != 0) |
6754 | return value; |
6755 | break; |
6756 | |
6757 | case '2': |
6758 | value = do_spec_1 (spec: cc1plus_spec, inswitch: 0, NULL); |
6759 | if (value != 0) |
6760 | return value; |
6761 | break; |
6762 | |
6763 | case 'a': |
6764 | value = do_spec_1 (spec: asm_spec, inswitch: 0, NULL); |
6765 | if (value != 0) |
6766 | return value; |
6767 | break; |
6768 | |
6769 | case 'A': |
6770 | value = do_spec_1 (spec: asm_final_spec, inswitch: 0, NULL); |
6771 | if (value != 0) |
6772 | return value; |
6773 | break; |
6774 | |
6775 | case 'C': |
6776 | { |
6777 | const char *const spec |
6778 | = (input_file_compiler->cpp_spec |
6779 | ? input_file_compiler->cpp_spec |
6780 | : cpp_spec); |
6781 | value = do_spec_1 (spec, inswitch: 0, NULL); |
6782 | if (value != 0) |
6783 | return value; |
6784 | } |
6785 | break; |
6786 | |
6787 | case 'E': |
6788 | value = do_spec_1 (spec: endfile_spec, inswitch: 0, NULL); |
6789 | if (value != 0) |
6790 | return value; |
6791 | break; |
6792 | |
6793 | case 'l': |
6794 | value = do_spec_1 (spec: link_spec, inswitch: 0, NULL); |
6795 | if (value != 0) |
6796 | return value; |
6797 | break; |
6798 | |
6799 | case 'L': |
6800 | value = do_spec_1 (spec: lib_spec, inswitch: 0, NULL); |
6801 | if (value != 0) |
6802 | return value; |
6803 | break; |
6804 | |
6805 | case 'M': |
6806 | if (multilib_os_dir == NULL) |
6807 | obstack_1grow (&obstack, '.'); |
6808 | else |
6809 | obstack_grow (&obstack, multilib_os_dir, |
6810 | strlen (multilib_os_dir)); |
6811 | break; |
6812 | |
6813 | case 'G': |
6814 | value = do_spec_1 (spec: libgcc_spec, inswitch: 0, NULL); |
6815 | if (value != 0) |
6816 | return value; |
6817 | break; |
6818 | |
6819 | case 'R': |
6820 | /* We assume there is a directory |
6821 | separator at the end of this string. */ |
6822 | if (target_system_root) |
6823 | { |
6824 | obstack_grow (&obstack, target_system_root, |
6825 | strlen (target_system_root)); |
6826 | if (target_sysroot_suffix) |
6827 | obstack_grow (&obstack, target_sysroot_suffix, |
6828 | strlen (target_sysroot_suffix)); |
6829 | } |
6830 | break; |
6831 | |
6832 | case 'S': |
6833 | value = do_spec_1 (spec: startfile_spec, inswitch: 0, NULL); |
6834 | if (value != 0) |
6835 | return value; |
6836 | break; |
6837 | |
6838 | /* Here we define characters other than letters and digits. */ |
6839 | |
6840 | case '{': |
6841 | p = handle_braces (p); |
6842 | if (p == 0) |
6843 | return -1; |
6844 | break; |
6845 | |
6846 | case ':': |
6847 | p = handle_spec_function (p, NULL, soft_matched_part); |
6848 | if (p == 0) |
6849 | return -1; |
6850 | break; |
6851 | |
6852 | case '%': |
6853 | obstack_1grow (&obstack, '%'); |
6854 | break; |
6855 | |
6856 | case '.': |
6857 | { |
6858 | unsigned len = 0; |
6859 | |
6860 | while (p[len] && p[len] != ' ' && p[len] != '%') |
6861 | len++; |
6862 | suffix_subst = save_string (p - 1, len + 1); |
6863 | p += len; |
6864 | } |
6865 | break; |
6866 | |
6867 | /* Henceforth ignore the option(s) matching the pattern |
6868 | after the %<. */ |
6869 | case '<': |
6870 | case '>': |
6871 | { |
6872 | unsigned len = 0; |
6873 | int have_wildcard = 0; |
6874 | int i; |
6875 | int switch_option; |
6876 | |
6877 | if (c == '>') |
6878 | switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC; |
6879 | else |
6880 | switch_option = SWITCH_IGNORE; |
6881 | |
6882 | while (p[len] && p[len] != ' ' && p[len] != '\t') |
6883 | len++; |
6884 | |
6885 | if (p[len-1] == '*') |
6886 | have_wildcard = 1; |
6887 | |
6888 | for (i = 0; i < n_switches; i++) |
6889 | if (!strncmp (s1: switches[i].part1, s2: p, n: len - have_wildcard) |
6890 | && (have_wildcard || switches[i].part1[len] == '\0')) |
6891 | { |
6892 | switches[i].live_cond |= switch_option; |
6893 | /* User switch be validated from validate_all_switches. |
6894 | when the definition is seen from the spec file. |
6895 | If not defined anywhere, will be rejected. */ |
6896 | if (switches[i].known) |
6897 | switches[i].validated = true; |
6898 | } |
6899 | |
6900 | p += len; |
6901 | } |
6902 | break; |
6903 | |
6904 | case '*': |
6905 | if (soft_matched_part) |
6906 | { |
6907 | if (soft_matched_part[0]) |
6908 | do_spec_1 (spec: soft_matched_part, inswitch: 1, NULL); |
6909 | /* Only insert a space after the substitution if it is at the |
6910 | end of the current sequence. So if: |
6911 | |
6912 | "%{foo=*:bar%*}%{foo=*:one%*two}" |
6913 | |
6914 | matches -foo=hello then it will produce: |
6915 | |
6916 | barhello onehellotwo |
6917 | */ |
6918 | if (*p == 0 || *p == '}') |
6919 | do_spec_1 (spec: " ", inswitch: 0, NULL); |
6920 | } |
6921 | else |
6922 | /* Catch the case where a spec string contains something like |
6923 | '%{foo:%*}'. i.e. there is no * in the pattern on the left |
6924 | hand side of the :. */ |
6925 | error ("spec failure: %<%%*%> has not been initialized by pattern match"); |
6926 | break; |
6927 | |
6928 | /* Process a string found as the value of a spec given by name. |
6929 | This feature allows individual machine descriptions |
6930 | to add and use their own specs. */ |
6931 | case '(': |
6932 | { |
6933 | const char *name = p; |
6934 | struct spec_list *sl; |
6935 | int len; |
6936 | |
6937 | /* The string after the S/P is the name of a spec that is to be |
6938 | processed. */ |
6939 | while (*p && *p != ')') |
6940 | p++; |
6941 | |
6942 | /* See if it's in the list. */ |
6943 | for (len = p - name, sl = specs; sl; sl = sl->next) |
6944 | if (sl->name_len == len && !strncmp (s1: sl->name, s2: name, n: len)) |
6945 | { |
6946 | name = *(sl->ptr_spec); |
6947 | #ifdef DEBUG_SPECS |
6948 | fnotice (stderr, "Processing spec (%s), which is '%s'\n", |
6949 | sl->name, name); |
6950 | #endif |
6951 | break; |
6952 | } |
6953 | |
6954 | if (sl) |
6955 | { |
6956 | value = do_spec_1 (spec: name, inswitch: 0, NULL); |
6957 | if (value != 0) |
6958 | return value; |
6959 | } |
6960 | |
6961 | /* Discard the closing paren. */ |
6962 | if (*p) |
6963 | p++; |
6964 | } |
6965 | break; |
6966 | |
6967 | case '"': |
6968 | /* End a previous argument, if there is one, then issue an |
6969 | empty argument. */ |
6970 | end_going_arg (); |
6971 | arg_going = 1; |
6972 | end_going_arg (); |
6973 | break; |
6974 | |
6975 | default: |
6976 | error ("spec failure: unrecognized spec option %qc", c); |
6977 | break; |
6978 | } |
6979 | break; |
6980 | |
6981 | case '\\': |
6982 | /* Backslash: treat next character as ordinary. */ |
6983 | c = *p++; |
6984 | |
6985 | /* When adding more cases that previously matched default, make |
6986 | sure to adjust quote_spec_char_p as well. */ |
6987 | |
6988 | /* Fall through. */ |
6989 | default: |
6990 | /* Ordinary character: put it into the current argument. */ |
6991 | obstack_1grow (&obstack, c); |
6992 | arg_going = 1; |
6993 | } |
6994 | |
6995 | /* End of string. If we are processing a spec function, we need to |
6996 | end any pending argument. */ |
6997 | if (processing_spec_function) |
6998 | end_going_arg (); |
6999 | |
7000 | return 0; |
7001 | } |
7002 | |
7003 | /* Look up a spec function. */ |
7004 | |
7005 | static const struct spec_function * |
7006 | lookup_spec_function (const char *name) |
7007 | { |
7008 | const struct spec_function *sf; |
7009 | |
7010 | for (sf = static_spec_functions; sf->name != NULL; sf++) |
7011 | if (strcmp (s1: sf->name, s2: name) == 0) |
7012 | return sf; |
7013 | |
7014 | return NULL; |
7015 | } |
7016 | |
7017 | /* Evaluate a spec function. */ |
7018 | |
7019 | static const char * |
7020 | eval_spec_function (const char *func, const char *args, |
7021 | const char *soft_matched_part) |
7022 | { |
7023 | const struct spec_function *sf; |
7024 | const char *funcval; |
7025 | |
7026 | /* Saved spec processing context. */ |
7027 | vec<const_char_p> save_argbuf; |
7028 | |
7029 | int save_arg_going; |
7030 | int save_delete_this_arg; |
7031 | int save_this_is_output_file; |
7032 | int save_this_is_library_file; |
7033 | int save_input_from_pipe; |
7034 | int save_this_is_linker_script; |
7035 | const char *save_suffix_subst; |
7036 | |
7037 | int save_growing_size; |
7038 | void *save_growing_value = NULL; |
7039 | |
7040 | sf = lookup_spec_function (name: func); |
7041 | if (sf == NULL) |
7042 | fatal_error (input_location, "unknown spec function %qs", func); |
7043 | |
7044 | /* Push the spec processing context. */ |
7045 | save_argbuf = argbuf; |
7046 | |
7047 | save_arg_going = arg_going; |
7048 | save_delete_this_arg = delete_this_arg; |
7049 | save_this_is_output_file = this_is_output_file; |
7050 | save_this_is_library_file = this_is_library_file; |
7051 | save_this_is_linker_script = this_is_linker_script; |
7052 | save_input_from_pipe = input_from_pipe; |
7053 | save_suffix_subst = suffix_subst; |
7054 | |
7055 | /* If we have some object growing now, finalize it so the args and function |
7056 | eval proceed from a cleared context. This is needed to prevent the first |
7057 | constructed arg from mistakenly including the growing value. We'll push |
7058 | this value back on the obstack once the function evaluation is done, to |
7059 | restore a consistent processing context for our caller. This is fine as |
7060 | the address of growing objects isn't guaranteed to remain stable until |
7061 | they are finalized, and we expect this situation to be rare enough for |
7062 | the extra copy not to be an issue. */ |
7063 | save_growing_size = obstack_object_size (&obstack); |
7064 | if (save_growing_size > 0) |
7065 | save_growing_value = obstack_finish (&obstack); |
7066 | |
7067 | /* Create a new spec processing context, and build the function |
7068 | arguments. */ |
7069 | |
7070 | alloc_args (); |
7071 | if (do_spec_2 (spec: args, soft_matched_part) < 0) |
7072 | fatal_error (input_location, "error in arguments to spec function %qs", |
7073 | func); |
7074 | |
7075 | /* argbuf_index is an index for the next argument to be inserted, and |
7076 | so contains the count of the args already inserted. */ |
7077 | |
7078 | funcval = (*sf->func) (argbuf.length (), |
7079 | argbuf.address ()); |
7080 | |
7081 | /* Pop the spec processing context. */ |
7082 | argbuf.release (); |
7083 | argbuf = save_argbuf; |
7084 | |
7085 | arg_going = save_arg_going; |
7086 | delete_this_arg = save_delete_this_arg; |
7087 | this_is_output_file = save_this_is_output_file; |
7088 | this_is_library_file = save_this_is_library_file; |
7089 | this_is_linker_script = save_this_is_linker_script; |
7090 | input_from_pipe = save_input_from_pipe; |
7091 | suffix_subst = save_suffix_subst; |
7092 | |
7093 | if (save_growing_size > 0) |
7094 | obstack_grow (&obstack, save_growing_value, save_growing_size); |
7095 | |
7096 | return funcval; |
7097 | } |
7098 | |
7099 | /* Handle a spec function call of the form: |
7100 | |
7101 | %:function(args) |
7102 | |
7103 | ARGS is processed as a spec in a separate context and split into an |
7104 | argument vector in the normal fashion. The function returns a string |
7105 | containing a spec which we then process in the caller's context, or |
7106 | NULL if no processing is required. |
7107 | |
7108 | If RETVAL_NONNULL is not NULL, then store a bool whether function |
7109 | returned non-NULL. |
7110 | |
7111 | SOFT_MATCHED_PART holds the current value of a matched * pattern, which |
7112 | may be re-expanded with a %* as part of the function arguments. */ |
7113 | |
7114 | static const char * |
7115 | handle_spec_function (const char *p, bool *retval_nonnull, |
7116 | const char *soft_matched_part) |
7117 | { |
7118 | char *func, *args; |
7119 | const char *endp, *funcval; |
7120 | int count; |
7121 | |
7122 | processing_spec_function++; |
7123 | |
7124 | /* Get the function name. */ |
7125 | for (endp = p; *endp != '\0'; endp++) |
7126 | { |
7127 | if (*endp == '(') /* ) */ |
7128 | break; |
7129 | /* Only allow [A-Za-z0-9], -, and _ in function names. */ |
7130 | if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_')) |
7131 | fatal_error (input_location, "malformed spec function name"); |
7132 | } |
7133 | if (*endp != '(') /* ) */ |
7134 | fatal_error (input_location, "no arguments for spec function"); |
7135 | func = save_string (p, endp - p); |
7136 | p = ++endp; |
7137 | |
7138 | /* Get the arguments. */ |
7139 | for (count = 0; *endp != '\0'; endp++) |
7140 | { |
7141 | /* ( */ |
7142 | if (*endp == ')') |
7143 | { |
7144 | if (count == 0) |
7145 | break; |
7146 | count--; |
7147 | } |
7148 | else if (*endp == '(') /* ) */ |
7149 | count++; |
7150 | } |
7151 | /* ( */ |
7152 | if (*endp != ')') |
7153 | fatal_error (input_location, "malformed spec function arguments"); |
7154 | args = save_string (p, endp - p); |
7155 | p = ++endp; |
7156 | |
7157 | /* p now points to just past the end of the spec function expression. */ |
7158 | |
7159 | funcval = eval_spec_function (func, args, soft_matched_part); |
7160 | if (funcval != NULL && do_spec_1 (spec: funcval, inswitch: 0, NULL) < 0) |
7161 | p = NULL; |
7162 | if (retval_nonnull) |
7163 | *retval_nonnull = funcval != NULL; |
7164 | |
7165 | free (ptr: func); |
7166 | free (ptr: args); |
7167 | |
7168 | processing_spec_function--; |
7169 | |
7170 | return p; |
7171 | } |
7172 | |
7173 | /* Inline subroutine of handle_braces. Returns true if the current |
7174 | input suffix matches the atom bracketed by ATOM and END_ATOM. */ |
7175 | static inline bool |
7176 | input_suffix_matches (const char *atom, const char *end_atom) |
7177 | { |
7178 | return (input_suffix |
7179 | && !strncmp (s1: input_suffix, s2: atom, n: end_atom - atom) |
7180 | && input_suffix[end_atom - atom] == '\0'); |
7181 | } |
7182 | |
7183 | /* Subroutine of handle_braces. Returns true if the current |
7184 | input file's spec name matches the atom bracketed by ATOM and END_ATOM. */ |
7185 | static bool |
7186 | input_spec_matches (const char *atom, const char *end_atom) |
7187 | { |
7188 | return (input_file_compiler |
7189 | && input_file_compiler->suffix |
7190 | && input_file_compiler->suffix[0] != '\0' |
7191 | && !strncmp (s1: input_file_compiler->suffix + 1, s2: atom, |
7192 | n: end_atom - atom) |
7193 | && input_file_compiler->suffix[end_atom - atom + 1] == '\0'); |
7194 | } |
7195 | |
7196 | /* Subroutine of handle_braces. Returns true if a switch |
7197 | matching the atom bracketed by ATOM and END_ATOM appeared on the |
7198 | command line. */ |
7199 | static bool |
7200 | switch_matches (const char *atom, const char *end_atom, int starred) |
7201 | { |
7202 | int i; |
7203 | int len = end_atom - atom; |
7204 | int plen = starred ? len : -1; |
7205 | |
7206 | for (i = 0; i < n_switches; i++) |
7207 | if (!strncmp (s1: switches[i].part1, s2: atom, n: len) |
7208 | && (starred || switches[i].part1[len] == '\0') |
7209 | && check_live_switch (i, plen)) |
7210 | return true; |
7211 | |
7212 | /* Check if a switch with separated form matching the atom. |
7213 | We check -D and -U switches. */ |
7214 | else if (switches[i].args != 0) |
7215 | { |
7216 | if ((*switches[i].part1 == 'D' || *switches[i].part1 == 'U') |
7217 | && *switches[i].part1 == atom[0]) |
7218 | { |
7219 | if (!strncmp (s1: switches[i].args[0], s2: &atom[1], n: len - 1) |
7220 | && (starred || (switches[i].part1[1] == '\0' |
7221 | && switches[i].args[0][len - 1] == '\0')) |
7222 | && check_live_switch (i, (starred ? 1 : -1))) |
7223 | return true; |
7224 | } |
7225 | } |
7226 | |
7227 | return false; |
7228 | } |
7229 | |
7230 | /* Inline subroutine of handle_braces. Mark all of the switches which |
7231 | match ATOM (extends to END_ATOM; STARRED indicates whether there |
7232 | was a star after the atom) for later processing. */ |
7233 | static inline void |
7234 | mark_matching_switches (const char *atom, const char *end_atom, int starred) |
7235 | { |
7236 | int i; |
7237 | int len = end_atom - atom; |
7238 | int plen = starred ? len : -1; |
7239 | |
7240 | for (i = 0; i < n_switches; i++) |
7241 | if (!strncmp (s1: switches[i].part1, s2: atom, n: len) |
7242 | && (starred || switches[i].part1[len] == '\0') |
7243 | && check_live_switch (i, plen)) |
7244 | switches[i].ordering = 1; |
7245 | } |
7246 | |
7247 | /* Inline subroutine of handle_braces. Process all the currently |
7248 | marked switches through give_switch, and clear the marks. */ |
7249 | static inline void |
7250 | process_marked_switches (void) |
7251 | { |
7252 | int i; |
7253 | |
7254 | for (i = 0; i < n_switches; i++) |
7255 | if (switches[i].ordering == 1) |
7256 | { |
7257 | switches[i].ordering = 0; |
7258 | give_switch (i, 0); |
7259 | } |
7260 | } |
7261 | |
7262 | /* Handle a %{ ... } construct. P points just inside the leading {. |
7263 | Returns a pointer one past the end of the brace block, or 0 |
7264 | if we call do_spec_1 and that returns -1. */ |
7265 | |
7266 | static const char * |
7267 | handle_braces (const char *p) |
7268 | { |
7269 | const char *atom, *end_atom; |
7270 | const char *d_atom = NULL, *d_end_atom = NULL; |
7271 | char *esc_buf = NULL, *d_esc_buf = NULL; |
7272 | int esc; |
7273 | const char *orig = p; |
7274 | |
7275 | bool a_is_suffix; |
7276 | bool a_is_spectype; |
7277 | bool a_is_starred; |
7278 | bool a_is_negated; |
7279 | bool a_matched; |
7280 | |
7281 | bool a_must_be_last = false; |
7282 | bool ordered_set = false; |
7283 | bool disjunct_set = false; |
7284 | bool disj_matched = false; |
7285 | bool disj_starred = true; |
7286 | bool n_way_choice = false; |
7287 | bool n_way_matched = false; |
7288 | |
7289 | #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0) |
7290 | |
7291 | do |
7292 | { |
7293 | if (a_must_be_last) |
7294 | goto invalid; |
7295 | |
7296 | /* Scan one "atom" (S in the description above of %{}, possibly |
7297 | with '!', '.', '@', ',', or '*' modifiers). */ |
7298 | a_matched = false; |
7299 | a_is_suffix = false; |
7300 | a_is_starred = false; |
7301 | a_is_negated = false; |
7302 | a_is_spectype = false; |
7303 | |
7304 | SKIP_WHITE (); |
7305 | if (*p == '!') |
7306 | p++, a_is_negated = true; |
7307 | |
7308 | SKIP_WHITE (); |
7309 | if (*p == '%' && p[1] == ':') |
7310 | { |
7311 | atom = NULL; |
7312 | end_atom = NULL; |
7313 | p = handle_spec_function (p: p + 2, retval_nonnull: &a_matched, NULL); |
7314 | } |
7315 | else |
7316 | { |
7317 | if (*p == '.') |
7318 | p++, a_is_suffix = true; |
7319 | else if (*p == ',') |
7320 | p++, a_is_spectype = true; |
7321 | |
7322 | atom = p; |
7323 | esc = 0; |
7324 | while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '=' |
7325 | || *p == ',' || *p == '.' || *p == '@' || *p == '\\') |
7326 | { |
7327 | if (*p == '\\') |
7328 | { |
7329 | p++; |
7330 | if (!*p) |
7331 | fatal_error (input_location, |
7332 | "braced spec %qs ends in escape", orig); |
7333 | esc++; |
7334 | } |
7335 | p++; |
7336 | } |
7337 | end_atom = p; |
7338 | |
7339 | if (esc) |
7340 | { |
7341 | const char *ap; |
7342 | char *ep; |
7343 | |
7344 | if (esc_buf && esc_buf != d_esc_buf) |
7345 | free (ptr: esc_buf); |
7346 | esc_buf = NULL; |
7347 | ep = esc_buf = (char *) xmalloc (end_atom - atom - esc + 1); |
7348 | for (ap = atom; ap != end_atom; ap++, ep++) |
7349 | { |
7350 | if (*ap == '\\') |
7351 | ap++; |
7352 | *ep = *ap; |
7353 | } |
7354 | *ep = '\0'; |
7355 | atom = esc_buf; |
7356 | end_atom = ep; |
7357 | } |
7358 | |
7359 | if (*p == '*') |
7360 | p++, a_is_starred = 1; |
7361 | } |
7362 | |
7363 | SKIP_WHITE (); |
7364 | switch (*p) |
7365 | { |
7366 | case '&': case '}': |
7367 | /* Substitute the switch(es) indicated by the current atom. */ |
7368 | ordered_set = true; |
7369 | if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix |
7370 | || a_is_spectype || atom == end_atom) |
7371 | goto invalid; |
7372 | |
7373 | mark_matching_switches (atom, end_atom, starred: a_is_starred); |
7374 | |
7375 | if (*p == '}') |
7376 | process_marked_switches (); |
7377 | break; |
7378 | |
7379 | case '|': case ':': |
7380 | /* Substitute some text if the current atom appears as a switch |
7381 | or suffix. */ |
7382 | disjunct_set = true; |
7383 | if (ordered_set) |
7384 | goto invalid; |
7385 | |
7386 | if (atom && atom == end_atom) |
7387 | { |
7388 | if (!n_way_choice || disj_matched || *p == '|' |
7389 | || a_is_negated || a_is_suffix || a_is_spectype |
7390 | || a_is_starred) |
7391 | goto invalid; |
7392 | |
7393 | /* An empty term may appear as the last choice of an |
7394 | N-way choice set; it means "otherwise". */ |
7395 | a_must_be_last = true; |
7396 | disj_matched = !n_way_matched; |
7397 | disj_starred = false; |
7398 | } |
7399 | else |
7400 | { |
7401 | if ((a_is_suffix || a_is_spectype) && a_is_starred) |
7402 | goto invalid; |
7403 | |
7404 | if (!a_is_starred) |
7405 | disj_starred = false; |
7406 | |
7407 | /* Don't bother testing this atom if we already have a |
7408 | match. */ |
7409 | if (!disj_matched && !n_way_matched) |
7410 | { |
7411 | if (atom == NULL) |
7412 | /* a_matched is already set by handle_spec_function. */; |
7413 | else if (a_is_suffix) |
7414 | a_matched = input_suffix_matches (atom, end_atom); |
7415 | else if (a_is_spectype) |
7416 | a_matched = input_spec_matches (atom, end_atom); |
7417 | else |
7418 | a_matched = switch_matches (atom, end_atom, starred: a_is_starred); |
7419 | |
7420 | if (a_matched != a_is_negated) |
7421 | { |
7422 | disj_matched = true; |
7423 | d_atom = atom; |
7424 | d_end_atom = end_atom; |
7425 | d_esc_buf = esc_buf; |
7426 | } |
7427 | } |
7428 | } |
7429 | |
7430 | if (*p == ':') |
7431 | { |
7432 | /* Found the body, that is, the text to substitute if the |
7433 | current disjunction matches. */ |
7434 | p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred, |
7435 | disj_matched && !n_way_matched); |
7436 | if (p == 0) |
7437 | goto done; |
7438 | |
7439 | /* If we have an N-way choice, reset state for the next |
7440 | disjunction. */ |
7441 | if (*p == ';') |
7442 | { |
7443 | n_way_choice = true; |
7444 | n_way_matched |= disj_matched; |
7445 | disj_matched = false; |
7446 | disj_starred = true; |
7447 | d_atom = d_end_atom = NULL; |
7448 | } |
7449 | } |
7450 | break; |
7451 | |
7452 | default: |
7453 | goto invalid; |
7454 | } |
7455 | } |
7456 | while (*p++ != '}'); |
7457 | |
7458 | done: |
7459 | if (d_esc_buf && d_esc_buf != esc_buf) |
7460 | free (ptr: d_esc_buf); |
7461 | if (esc_buf) |
7462 | free (ptr: esc_buf); |
7463 | |
7464 | return p; |
7465 | |
7466 | invalid: |
7467 | fatal_error (input_location, "braced spec %qs is invalid at %qc", orig, *p); |
7468 | |
7469 | #undef SKIP_WHITE |
7470 | } |
7471 | |
7472 | /* Subroutine of handle_braces. Scan and process a brace substitution body |
7473 | (X in the description of %{} syntax). P points one past the colon; |
7474 | ATOM and END_ATOM bracket the first atom which was found to be true |
7475 | (present) in the current disjunction; STARRED indicates whether all |
7476 | the atoms in the current disjunction were starred (for syntax validation); |
7477 | MATCHED indicates whether the disjunction matched or not, and therefore |
7478 | whether or not the body is to be processed through do_spec_1 or just |
7479 | skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1 |
7480 | returns -1. */ |
7481 | |
7482 | static const char * |
7483 | process_brace_body (const char *p, const char *atom, const char *end_atom, |
7484 | int starred, int matched) |
7485 | { |
7486 | const char *body, *end_body; |
7487 | unsigned int nesting_level; |
7488 | bool have_subst = false; |
7489 | |
7490 | /* Locate the closing } or ;, honoring nested braces. |
7491 | Trim trailing whitespace. */ |
7492 | body = p; |
7493 | nesting_level = 1; |
7494 | for (;;) |
7495 | { |
7496 | if (*p == '{') |
7497 | nesting_level++; |
7498 | else if (*p == '}') |
7499 | { |
7500 | if (!--nesting_level) |
7501 | break; |
7502 | } |
7503 | else if (*p == ';' && nesting_level == 1) |
7504 | break; |
7505 | else if (*p == '%' && p[1] == '*' && nesting_level == 1) |
7506 | have_subst = true; |
7507 | else if (*p == '\0') |
7508 | goto invalid; |
7509 | p++; |
7510 | } |
7511 | |
7512 | end_body = p; |
7513 | while (end_body[-1] == ' ' || end_body[-1] == '\t') |
7514 | end_body--; |
7515 | |
7516 | if (have_subst && !starred) |
7517 | goto invalid; |
7518 | |
7519 | if (matched) |
7520 | { |
7521 | /* Copy the substitution body to permanent storage and execute it. |
7522 | If have_subst is false, this is a simple matter of running the |
7523 | body through do_spec_1... */ |
7524 | char *string = save_string (body, end_body - body); |
7525 | if (!have_subst) |
7526 | { |
7527 | if (do_spec_1 (spec: string, inswitch: 0, NULL) < 0) |
7528 | { |
7529 | free (ptr: string); |
7530 | return 0; |
7531 | } |
7532 | } |
7533 | else |
7534 | { |
7535 | /* ... but if have_subst is true, we have to process the |
7536 | body once for each matching switch, with %* set to the |
7537 | variant part of the switch. */ |
7538 | unsigned int hard_match_len = end_atom - atom; |
7539 | int i; |
7540 | |
7541 | for (i = 0; i < n_switches; i++) |
7542 | if (!strncmp (s1: switches[i].part1, s2: atom, n: hard_match_len) |
7543 | && check_live_switch (i, hard_match_len)) |
7544 | { |
7545 | if (do_spec_1 (spec: string, inswitch: 0, |
7546 | soft_matched_part: &switches[i].part1[hard_match_len]) < 0) |
7547 | { |
7548 | free (ptr: string); |
7549 | return 0; |
7550 | } |
7551 | /* Pass any arguments this switch has. */ |
7552 | give_switch (i, 1); |
7553 | suffix_subst = NULL; |
7554 | } |
7555 | } |
7556 | free (ptr: string); |
7557 | } |
7558 | |
7559 | return p; |
7560 | |
7561 | invalid: |
7562 | fatal_error (input_location, "braced spec body %qs is invalid", body); |
7563 | } |
7564 | |
7565 | /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch |
7566 | on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*} |
7567 | spec, or -1 if either exact match or %* is used. |
7568 | |
7569 | A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch |
7570 | whose value does not begin with "no-" is obsoleted by the same value |
7571 | with the "no-", similarly for a switch with the "no-" prefix. */ |
7572 | |
7573 | static int |
7574 | check_live_switch (int switchnum, int prefix_length) |
7575 | { |
7576 | const char *name = switches[switchnum].part1; |
7577 | int i; |
7578 | |
7579 | /* If we already processed this switch and determined if it was |
7580 | live or not, return our past determination. */ |
7581 | if (switches[switchnum].live_cond != 0) |
7582 | return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0 |
7583 | && (switches[switchnum].live_cond & SWITCH_FALSE) == 0 |
7584 | && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY) |
7585 | == 0); |
7586 | |
7587 | /* In the common case of {<at-most-one-letter>*}, a negating |
7588 | switch would always match, so ignore that case. We will just |
7589 | send the conflicting switches to the compiler phase. */ |
7590 | if (prefix_length >= 0 && prefix_length <= 1) |
7591 | return 1; |
7592 | |
7593 | /* Now search for duplicate in a manner that depends on the name. */ |
7594 | switch (*name) |
7595 | { |
7596 | case 'O': |
7597 | for (i = switchnum + 1; i < n_switches; i++) |
7598 | if (switches[i].part1[0] == 'O') |
7599 | { |
7600 | switches[switchnum].validated = true; |
7601 | switches[switchnum].live_cond = SWITCH_FALSE; |
7602 | return 0; |
7603 | } |
7604 | break; |
7605 | |
7606 | case 'W': case 'f': case 'm': case 'g': |
7607 | if (startswith (str: name + 1, prefix: "no-")) |
7608 | { |
7609 | /* We have Xno-YYY, search for XYYY. */ |
7610 | for (i = switchnum + 1; i < n_switches; i++) |
7611 | if (switches[i].part1[0] == name[0] |
7612 | && ! strcmp (s1: &switches[i].part1[1], s2: &name[4])) |
7613 | { |
7614 | /* --specs are validated with the validate_switches mechanism. */ |
7615 | if (switches[switchnum].known) |
7616 | switches[switchnum].validated = true; |
7617 | switches[switchnum].live_cond = SWITCH_FALSE; |
7618 | return 0; |
7619 | } |
7620 | } |
7621 | else |
7622 | { |
7623 | /* We have XYYY, search for Xno-YYY. */ |
7624 | for (i = switchnum + 1; i < n_switches; i++) |
7625 | if (switches[i].part1[0] == name[0] |
7626 | && switches[i].part1[1] == 'n' |
7627 | && switches[i].part1[2] == 'o' |
7628 | && switches[i].part1[3] == '-' |
7629 | && !strcmp (s1: &switches[i].part1[4], s2: &name[1])) |
7630 | { |
7631 | /* --specs are validated with the validate_switches mechanism. */ |
7632 | if (switches[switchnum].known) |
7633 | switches[switchnum].validated = true; |
7634 | switches[switchnum].live_cond = SWITCH_FALSE; |
7635 | return 0; |
7636 | } |
7637 | } |
7638 | break; |
7639 | } |
7640 | |
7641 | /* Otherwise the switch is live. */ |
7642 | switches[switchnum].live_cond |= SWITCH_LIVE; |
7643 | return 1; |
7644 | } |
7645 | |
7646 | /* Pass a switch to the current accumulating command |
7647 | in the same form that we received it. |
7648 | SWITCHNUM identifies the switch; it is an index into |
7649 | the vector of switches gcc received, which is `switches'. |
7650 | This cannot fail since it never finishes a command line. |
7651 | |
7652 | If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */ |
7653 | |
7654 | static void |
7655 | give_switch (int switchnum, int omit_first_word) |
7656 | { |
7657 | if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0) |
7658 | return; |
7659 | |
7660 | if (!omit_first_word) |
7661 | { |
7662 | do_spec_1 (spec: "-", inswitch: 0, NULL); |
7663 | do_spec_1 (spec: switches[switchnum].part1, inswitch: 1, NULL); |
7664 | } |
7665 | |
7666 | if (switches[switchnum].args != 0) |
7667 | { |
7668 | const char **p; |
7669 | for (p = switches[switchnum].args; *p; p++) |
7670 | { |
7671 | const char *arg = *p; |
7672 | |
7673 | do_spec_1 (spec: " ", inswitch: 0, NULL); |
7674 | if (suffix_subst) |
7675 | { |
7676 | unsigned length = strlen (s: arg); |
7677 | int dot = 0; |
7678 | |
7679 | while (length-- && !IS_DIR_SEPARATOR (arg[length])) |
7680 | if (arg[length] == '.') |
7681 | { |
7682 | (CONST_CAST (char *, arg))[length] = 0; |
7683 | dot = 1; |
7684 | break; |
7685 | } |
7686 | do_spec_1 (spec: arg, inswitch: 1, NULL); |
7687 | if (dot) |
7688 | (CONST_CAST (char *, arg))[length] = '.'; |
7689 | do_spec_1 (spec: suffix_subst, inswitch: 1, NULL); |
7690 | } |
7691 | else |
7692 | do_spec_1 (spec: arg, inswitch: 1, NULL); |
7693 | } |
7694 | } |
7695 | |
7696 | do_spec_1 (spec: " ", inswitch: 0, NULL); |
7697 | switches[switchnum].validated = true; |
7698 | } |
7699 | |
7700 | /* Print GCC configuration (e.g. version, thread model, target, |
7701 | configuration_arguments) to a given FILE. */ |
7702 | |
7703 | static void |
7704 | print_configuration (FILE *file) |
7705 | { |
7706 | int n; |
7707 | const char *thrmod; |
7708 | |
7709 | fnotice (file, "Target: %s\n", spec_machine); |
7710 | fnotice (file, "Configured with: %s\n", configuration_arguments); |
7711 | |
7712 | #ifdef THREAD_MODEL_SPEC |
7713 | /* We could have defined THREAD_MODEL_SPEC to "%*" by default, |
7714 | but there's no point in doing all this processing just to get |
7715 | thread_model back. */ |
7716 | obstack_init (&obstack); |
7717 | do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model); |
7718 | obstack_1grow (&obstack, '\0'); |
7719 | thrmod = XOBFINISH (&obstack, const char *); |
7720 | #else |
7721 | thrmod = thread_model; |
7722 | #endif |
7723 | |
7724 | fnotice (file, "Thread model: %s\n", thrmod); |
7725 | fnotice (file, "Supported LTO compression algorithms: zlib"); |
7726 | #ifdef HAVE_ZSTD_H |
7727 | fnotice (file, " zstd"); |
7728 | #endif |
7729 | fnotice (file, "\n"); |
7730 | |
7731 | /* compiler_version is truncated at the first space when initialized |
7732 | from version string, so truncate version_string at the first space |
7733 | before comparing. */ |
7734 | for (n = 0; version_string[n]; n++) |
7735 | if (version_string[n] == ' ') |
7736 | break; |
7737 | |
7738 | if (! strncmp (version_string, s2: compiler_version, n: n) |
7739 | && compiler_version[n] == 0) |
7740 | fnotice (file, "gcc version %s %s\n", version_string, |
7741 | pkgversion_string); |
7742 | else |
7743 | fnotice (file, "gcc driver version %s %sexecuting gcc version %s\n", |
7744 | version_string, pkgversion_string, compiler_version); |
7745 | |
7746 | } |
7747 | |
7748 | #define RETRY_ICE_ATTEMPTS 3 |
7749 | |
7750 | /* Returns true if FILE1 and FILE2 contain equivalent data, 0 otherwise. |
7751 | If lines start with 0x followed by 1-16 lowercase hexadecimal digits |
7752 | followed by a space, ignore anything before that space. These are |
7753 | typically function addresses from libbacktrace and those can differ |
7754 | due to ASLR. */ |
7755 | |
7756 | static bool |
7757 | files_equal_p (char *file1, char *file2) |
7758 | { |
7759 | FILE *f1 = fopen (filename: file1, modes: "rb"); |
7760 | FILE *f2 = fopen (filename: file2, modes: "rb"); |
7761 | char line1[256], line2[256]; |
7762 | |
7763 | bool line_start = true; |
7764 | while (fgets (s: line1, n: sizeof (line1), stream: f1)) |
7765 | { |
7766 | if (!fgets (s: line2, n: sizeof (line2), stream: f2)) |
7767 | goto error; |
7768 | char *p1 = line1, *p2 = line2; |
7769 | if (line_start |
7770 | && line1[0] == '0' |
7771 | && line1[1] == 'x' |
7772 | && line2[0] == '0' |
7773 | && line2[1] == 'x') |
7774 | { |
7775 | int i, j; |
7776 | for (i = 0; i < 16; ++i) |
7777 | if (!ISXDIGIT (line1[2 + i]) || ISUPPER (line1[2 + i])) |
7778 | break; |
7779 | for (j = 0; j < 16; ++j) |
7780 | if (!ISXDIGIT (line2[2 + j]) || ISUPPER (line2[2 + j])) |
7781 | break; |
7782 | if (i && line1[2 + i] == ' ' && j && line2[2 + j] == ' ') |
7783 | { |
7784 | p1 = line1 + i + 3; |
7785 | p2 = line2 + j + 3; |
7786 | } |
7787 | } |
7788 | if (strcmp (s1: p1, s2: p2) != 0) |
7789 | goto error; |
7790 | line_start = strchr (s: line1, c: '\n') != NULL; |
7791 | } |
7792 | if (fgets (s: line2, n: sizeof (line2), stream: f2)) |
7793 | goto error; |
7794 | |
7795 | fclose (stream: f1); |
7796 | fclose (stream: f2); |
7797 | return 1; |
7798 | |
7799 | error: |
7800 | fclose (stream: f1); |
7801 | fclose (stream: f2); |
7802 | return 0; |
7803 | } |
7804 | |
7805 | /* Check that compiler's output doesn't differ across runs. |
7806 | TEMP_STDOUT_FILES and TEMP_STDERR_FILES are arrays of files, containing |
7807 | stdout and stderr for each compiler run. Return true if all of |
7808 | TEMP_STDOUT_FILES and TEMP_STDERR_FILES are equivalent. */ |
7809 | |
7810 | static bool |
7811 | check_repro (char **temp_stdout_files, char **temp_stderr_files) |
7812 | { |
7813 | int i; |
7814 | for (i = 0; i < RETRY_ICE_ATTEMPTS - 2; ++i) |
7815 | { |
7816 | if (!files_equal_p (file1: temp_stdout_files[i], file2: temp_stdout_files[i + 1]) |
7817 | || !files_equal_p (file1: temp_stderr_files[i], file2: temp_stderr_files[i + 1])) |
7818 | { |
7819 | fnotice (stderr, "The bug is not reproducible, so it is" |
7820 | " likely a hardware or OS problem.\n"); |
7821 | break; |
7822 | } |
7823 | } |
7824 | return i == RETRY_ICE_ATTEMPTS - 2; |
7825 | } |
7826 | |
7827 | enum attempt_status { |
7828 | ATTEMPT_STATUS_FAIL_TO_RUN, |
7829 | ATTEMPT_STATUS_SUCCESS, |
7830 | ATTEMPT_STATUS_ICE |
7831 | }; |
7832 | |
7833 | |
7834 | /* Run compiler with arguments NEW_ARGV to reproduce the ICE, storing stdout |
7835 | to OUT_TEMP and stderr to ERR_TEMP. If APPEND is TRUE, append to OUT_TEMP |
7836 | and ERR_TEMP instead of truncating. If EMIT_SYSTEM_INFO is TRUE, also write |
7837 | GCC configuration into to ERR_TEMP. Return ATTEMPT_STATUS_FAIL_TO_RUN if |
7838 | compiler failed to run, ATTEMPT_STATUS_ICE if compiled ICE-ed and |
7839 | ATTEMPT_STATUS_SUCCESS otherwise. */ |
7840 | |
7841 | static enum attempt_status |
7842 | run_attempt (const char **new_argv, const char *out_temp, |
7843 | const char *err_temp, int emit_system_info, int append) |
7844 | { |
7845 | |
7846 | if (emit_system_info) |
7847 | { |
7848 | FILE *file_out = fopen (filename: err_temp, modes: "a"); |
7849 | print_configuration (file: file_out); |
7850 | fputs (s: "\n", stream: file_out); |
7851 | fclose (stream: file_out); |
7852 | } |
7853 | |
7854 | int exit_status; |
7855 | const char *errmsg; |
7856 | struct pex_obj *pex; |
7857 | int err; |
7858 | int pex_flags = PEX_USE_PIPES | PEX_LAST; |
7859 | enum attempt_status status = ATTEMPT_STATUS_FAIL_TO_RUN; |
7860 | |
7861 | if (append) |
7862 | pex_flags |= PEX_STDOUT_APPEND | PEX_STDERR_APPEND; |
7863 | |
7864 | pex = pex_init (PEX_USE_PIPES, pname: new_argv[0], NULL); |
7865 | if (!pex) |
7866 | fatal_error (input_location, "%<pex_init%> failed: %m"); |
7867 | |
7868 | errmsg = pex_run (obj: pex, flags: pex_flags, executable: new_argv[0], |
7869 | CONST_CAST2 (char *const *, const char **, &new_argv[1]), |
7870 | outname: out_temp, errname: err_temp, err: &err); |
7871 | if (errmsg != NULL) |
7872 | { |
7873 | errno = err; |
7874 | fatal_error (input_location, |
7875 | err ? G_ ("cannot execute %qs: %s: %m") |
7876 | : G_ ("cannot execute %qs: %s"), |
7877 | new_argv[0], errmsg); |
7878 | } |
7879 | |
7880 | if (!pex_get_status (pex, count: 1, vector: &exit_status)) |
7881 | goto out; |
7882 | |
7883 | switch (WEXITSTATUS (exit_status)) |
7884 | { |
7885 | case ICE_EXIT_CODE: |
7886 | status = ATTEMPT_STATUS_ICE; |
7887 | break; |
7888 | |
7889 | case SUCCESS_EXIT_CODE: |
7890 | status = ATTEMPT_STATUS_SUCCESS; |
7891 | break; |
7892 | |
7893 | default: |
7894 | ; |
7895 | } |
7896 | |
7897 | out: |
7898 | pex_free (pex); |
7899 | return status; |
7900 | } |
7901 | |
7902 | /* This routine reads lines from IN file, adds C++ style comments |
7903 | at the begining of each line and writes result into OUT. */ |
7904 | |
7905 | static void |
7906 | insert_comments (const char *file_in, const char *file_out) |
7907 | { |
7908 | FILE *in = fopen (filename: file_in, modes: "rb"); |
7909 | FILE *out = fopen (filename: file_out, modes: "wb"); |
7910 | char line[256]; |
7911 | |
7912 | bool add_comment = true; |
7913 | while (fgets (s: line, n: sizeof (line), stream: in)) |
7914 | { |
7915 | if (add_comment) |
7916 | fputs (s: "// ", stream: out); |
7917 | fputs (s: line, stream: out); |
7918 | add_comment = strchr (s: line, c: '\n') != NULL; |
7919 | } |
7920 | |
7921 | fclose (stream: in); |
7922 | fclose (stream: out); |
7923 | } |
7924 | |
7925 | /* This routine adds preprocessed source code into the given ERR_FILE. |
7926 | To do this, it adds "-E" to NEW_ARGV and execute RUN_ATTEMPT routine to |
7927 | add information in report file. RUN_ATTEMPT should return |
7928 | ATTEMPT_STATUS_SUCCESS, in other case we cannot generate the report. */ |
7929 | |
7930 | static void |
7931 | do_report_bug (const char **new_argv, const int nargs, |
7932 | char **out_file, char **err_file) |
7933 | { |
7934 | int i, status; |
7935 | int fd = open (file: *out_file, O_RDWR | O_APPEND); |
7936 | if (fd < 0) |
7937 | return; |
7938 | write (fd: fd, buf: "\n//", n: 3); |
7939 | for (i = 0; i < nargs; i++) |
7940 | { |
7941 | write (fd: fd, buf: " ", n: 1); |
7942 | write (fd: fd, buf: new_argv[i], n: strlen (s: new_argv[i])); |
7943 | } |
7944 | write (fd: fd, buf: "\n\n", n: 2); |
7945 | close (fd: fd); |
7946 | new_argv[nargs] = "-E"; |
7947 | new_argv[nargs + 1] = NULL; |
7948 | |
7949 | status = run_attempt (new_argv, out_temp: *out_file, err_temp: *err_file, emit_system_info: 0, append: 1); |
7950 | |
7951 | if (status == ATTEMPT_STATUS_SUCCESS) |
7952 | { |
7953 | fnotice (stderr, "Preprocessed source stored into %s file," |
7954 | " please attach this to your bugreport.\n", *out_file); |
7955 | /* Make sure it is not deleted. */ |
7956 | free (ptr: *out_file); |
7957 | *out_file = NULL; |
7958 | } |
7959 | } |
7960 | |
7961 | /* Try to reproduce ICE. If bug is reproducible, generate report .err file |
7962 | containing GCC configuration, backtrace, compiler's command line options |
7963 | and preprocessed source code. */ |
7964 | |
7965 | static void |
7966 | try_generate_repro (const char **argv) |
7967 | { |
7968 | int i, nargs, out_arg = -1, quiet = 0, attempt; |
7969 | const char **new_argv; |
7970 | char *temp_files[RETRY_ICE_ATTEMPTS * 2]; |
7971 | char **temp_stdout_files = &temp_files[0]; |
7972 | char **temp_stderr_files = &temp_files[RETRY_ICE_ATTEMPTS]; |
7973 | |
7974 | if (gcc_input_filename == NULL || ! strcmp (s1: gcc_input_filename, s2: "-")) |
7975 | return; |
7976 | |
7977 | for (nargs = 0; argv[nargs] != NULL; ++nargs) |
7978 | /* Only retry compiler ICEs, not preprocessor ones. */ |
7979 | if (! strcmp (s1: argv[nargs], s2: "-E")) |
7980 | return; |
7981 | else if (argv[nargs][0] == '-' && argv[nargs][1] == 'o') |
7982 | { |
7983 | if (out_arg == -1) |
7984 | out_arg = nargs; |
7985 | else |
7986 | return; |
7987 | } |
7988 | /* If the compiler is going to output any time information, |
7989 | it might varry between invocations. */ |
7990 | else if (! strcmp (s1: argv[nargs], s2: "-quiet")) |
7991 | quiet = 1; |
7992 | else if (! strcmp (s1: argv[nargs], s2: "-ftime-report")) |
7993 | return; |
7994 | |
7995 | if (out_arg == -1 || !quiet) |
7996 | return; |
7997 | |
7998 | memset (s: temp_files, c: '\0', n: sizeof (temp_files)); |
7999 | new_argv = XALLOCAVEC (const char *, nargs + 4); |
8000 | memcpy (dest: new_argv, src: argv, n: (nargs + 1) * sizeof (const char *)); |
8001 | new_argv[nargs++] = "-frandom-seed=0"; |
8002 | new_argv[nargs++] = "-fdump-noaddr"; |
8003 | new_argv[nargs] = NULL; |
8004 | if (new_argv[out_arg][2] == '\0') |
8005 | new_argv[out_arg + 1] = "-"; |
8006 | else |
8007 | new_argv[out_arg] = "-o-"; |
8008 | |
8009 | #ifdef HOST_HAS_PERSONALITY_ADDR_NO_RANDOMIZE |
8010 | personality (persona: personality (persona: 0xffffffffU) | ADDR_NO_RANDOMIZE); |
8011 | #endif |
8012 | |
8013 | int status; |
8014 | for (attempt = 0; attempt < RETRY_ICE_ATTEMPTS; ++attempt) |
8015 | { |
8016 | int emit_system_info = 0; |
8017 | int append = 0; |
8018 | temp_stdout_files[attempt] = make_temp_file (".out"); |
8019 | temp_stderr_files[attempt] = make_temp_file (".err"); |
8020 | |
8021 | if (attempt == RETRY_ICE_ATTEMPTS - 1) |
8022 | { |
8023 | append = 1; |
8024 | emit_system_info = 1; |
8025 | } |
8026 | |
8027 | status = run_attempt (new_argv, out_temp: temp_stdout_files[attempt], |
8028 | err_temp: temp_stderr_files[attempt], emit_system_info, |
8029 | append); |
8030 | |
8031 | if (status != ATTEMPT_STATUS_ICE) |
8032 | { |
8033 | fnotice (stderr, "The bug is not reproducible, so it is" |
8034 | " likely a hardware or OS problem.\n"); |
8035 | goto out; |
8036 | } |
8037 | } |
8038 | |
8039 | if (!check_repro (temp_stdout_files, temp_stderr_files)) |
8040 | goto out; |
8041 | |
8042 | { |
8043 | /* Insert commented out backtrace into report file. */ |
8044 | char **stderr_commented = &temp_stdout_files[RETRY_ICE_ATTEMPTS - 1]; |
8045 | insert_comments (file_in: temp_stderr_files[RETRY_ICE_ATTEMPTS - 1], |
8046 | file_out: *stderr_commented); |
8047 | |
8048 | /* In final attempt we append compiler options and preprocesssed code to last |
8049 | generated .out file with configuration and backtrace. */ |
8050 | char **err = &temp_stderr_files[RETRY_ICE_ATTEMPTS - 1]; |
8051 | do_report_bug (new_argv, nargs, out_file: stderr_commented, err_file: err); |
8052 | } |
8053 | |
8054 | out: |
8055 | for (i = 0; i < RETRY_ICE_ATTEMPTS * 2; i++) |
8056 | if (temp_files[i]) |
8057 | { |
8058 | unlink (name: temp_stdout_files[i]); |
8059 | free (ptr: temp_stdout_files[i]); |
8060 | } |
8061 | } |
8062 | |
8063 | /* Search for a file named NAME trying various prefixes including the |
8064 | user's -B prefix and some standard ones. |
8065 | Return the absolute file name found. If nothing is found, return NAME. */ |
8066 | |
8067 | static const char * |
8068 | find_file (const char *name) |
8069 | { |
8070 | char *newname = find_a_file (pprefix: &startfile_prefixes, name, R_OK, do_multi: true); |
8071 | return newname ? newname : name; |
8072 | } |
8073 | |
8074 | /* Determine whether a directory exists. */ |
8075 | |
8076 | static int |
8077 | is_directory (const char *path1) |
8078 | { |
8079 | int len1; |
8080 | char *path; |
8081 | char *cp; |
8082 | struct stat st; |
8083 | |
8084 | /* Ensure the string ends with "/.". The resulting path will be a |
8085 | directory even if the given path is a symbolic link. */ |
8086 | len1 = strlen (s: path1); |
8087 | path = (char *) alloca (3 + len1); |
8088 | memcpy (dest: path, src: path1, n: len1); |
8089 | cp = path + len1; |
8090 | if (!IS_DIR_SEPARATOR (cp[-1])) |
8091 | *cp++ = DIR_SEPARATOR; |
8092 | *cp++ = '.'; |
8093 | *cp = '\0'; |
8094 | |
8095 | return (stat (file: path, buf: &st) >= 0 && S_ISDIR (st.st_mode)); |
8096 | } |
8097 | |
8098 | /* Set up the various global variables to indicate that we're processing |
8099 | the input file named FILENAME. */ |
8100 | |
8101 | void |
8102 | set_input (const char *filename) |
8103 | { |
8104 | const char *p; |
8105 | |
8106 | gcc_input_filename = filename; |
8107 | input_filename_length = strlen (s: gcc_input_filename); |
8108 | input_basename = lbasename (gcc_input_filename); |
8109 | |
8110 | /* Find a suffix starting with the last period, |
8111 | and set basename_length to exclude that suffix. */ |
8112 | basename_length = strlen (s: input_basename); |
8113 | suffixed_basename_length = basename_length; |
8114 | p = input_basename + basename_length; |
8115 | while (p != input_basename && *p != '.') |
8116 | --p; |
8117 | if (*p == '.' && p != input_basename) |
8118 | { |
8119 | basename_length = p - input_basename; |
8120 | input_suffix = p + 1; |
8121 | } |
8122 | else |
8123 | input_suffix = ""; |
8124 | |
8125 | /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then |
8126 | we will need to do a stat on the gcc_input_filename. The |
8127 | INPUT_STAT_SET signals that the stat is needed. */ |
8128 | input_stat_set = 0; |
8129 | } |
8130 | |
8131 | /* On fatal signals, delete all the temporary files. */ |
8132 | |
8133 | static void |
8134 | fatal_signal (int signum) |
8135 | { |
8136 | signal (sig: signum, SIG_DFL); |
8137 | delete_failure_queue (); |
8138 | delete_temp_files (); |
8139 | /* Get the same signal again, this time not handled, |
8140 | so its normal effect occurs. */ |
8141 | kill (pid: getpid (), sig: signum); |
8142 | } |
8143 | |
8144 | /* Compare the contents of the two files named CMPFILE[0] and |
8145 | CMPFILE[1]. Return zero if they're identical, nonzero |
8146 | otherwise. */ |
8147 | |
8148 | static int |
8149 | compare_files (char *cmpfile[]) |
8150 | { |
8151 | int ret = 0; |
8152 | FILE *temp[2] = { NULL, NULL }; |
8153 | int i; |
8154 | |
8155 | #if HAVE_MMAP_FILE |
8156 | { |
8157 | size_t length[2]; |
8158 | void *map[2] = { NULL, NULL }; |
8159 | |
8160 | for (i = 0; i < 2; i++) |
8161 | { |
8162 | struct stat st; |
8163 | |
8164 | if (stat (file: cmpfile[i], buf: &st) < 0 || !S_ISREG (st.st_mode)) |
8165 | { |
8166 | error ("%s: could not determine length of compare-debug file %s", |
8167 | gcc_input_filename, cmpfile[i]); |
8168 | ret = 1; |
8169 | break; |
8170 | } |
8171 | |
8172 | length[i] = st.st_size; |
8173 | } |
8174 | |
8175 | if (!ret && length[0] != length[1]) |
8176 | { |
8177 | error ("%s: %<-fcompare-debug%> failure (length)", gcc_input_filename); |
8178 | ret = 1; |
8179 | } |
8180 | |
8181 | if (!ret) |
8182 | for (i = 0; i < 2; i++) |
8183 | { |
8184 | int fd = open (file: cmpfile[i], O_RDONLY); |
8185 | if (fd < 0) |
8186 | { |
8187 | error ("%s: could not open compare-debug file %s", |
8188 | gcc_input_filename, cmpfile[i]); |
8189 | ret = 1; |
8190 | break; |
8191 | } |
8192 | |
8193 | map[i] = mmap (NULL, len: length[i], PROT_READ, MAP_PRIVATE, fd: fd, offset: 0); |
8194 | close (fd: fd); |
8195 | |
8196 | if (map[i] == (void *) MAP_FAILED) |
8197 | { |
8198 | ret = -1; |
8199 | break; |
8200 | } |
8201 | } |
8202 | |
8203 | if (!ret) |
8204 | { |
8205 | if (memcmp (s1: map[0], s2: map[1], n: length[0]) != 0) |
8206 | { |
8207 | error ("%s: %<-fcompare-debug%> failure", gcc_input_filename); |
8208 | ret = 1; |
8209 | } |
8210 | } |
8211 | |
8212 | for (i = 0; i < 2; i++) |
8213 | if (map[i]) |
8214 | munmap (addr: (caddr_t) map[i], len: length[i]); |
8215 | |
8216 | if (ret >= 0) |
8217 | return ret; |
8218 | |
8219 | ret = 0; |
8220 | } |
8221 | #endif |
8222 | |
8223 | for (i = 0; i < 2; i++) |
8224 | { |
8225 | temp[i] = fopen (filename: cmpfile[i], modes: "r"); |
8226 | if (!temp[i]) |
8227 | { |
8228 | error ("%s: could not open compare-debug file %s", |
8229 | gcc_input_filename, cmpfile[i]); |
8230 | ret = 1; |
8231 | break; |
8232 | } |
8233 | } |
8234 | |
8235 | if (!ret && temp[0] && temp[1]) |
8236 | for (;;) |
8237 | { |
8238 | int c0, c1; |
8239 | c0 = fgetc (stream: temp[0]); |
8240 | c1 = fgetc (stream: temp[1]); |
8241 | |
8242 | if (c0 != c1) |
8243 | { |
8244 | error ("%s: %<-fcompare-debug%> failure", |
8245 | gcc_input_filename); |
8246 | ret = 1; |
8247 | break; |
8248 | } |
8249 | |
8250 | if (c0 == EOF) |
8251 | break; |
8252 | } |
8253 | |
8254 | for (i = 1; i >= 0; i--) |
8255 | { |
8256 | if (temp[i]) |
8257 | fclose (stream: temp[i]); |
8258 | } |
8259 | |
8260 | return ret; |
8261 | } |
8262 | |
8263 | driver::driver (bool can_finalize, bool debug) : |
8264 | explicit_link_files (NULL), |
8265 | decoded_options (NULL) |
8266 | { |
8267 | env.init (can_restore: can_finalize, debug); |
8268 | } |
8269 | |
8270 | driver::~driver () |
8271 | { |
8272 | XDELETEVEC (explicit_link_files); |
8273 | XDELETEVEC (decoded_options); |
8274 | } |
8275 | |
8276 | /* driver::main is implemented as a series of driver:: method calls. */ |
8277 | |
8278 | int |
8279 | driver::main (int argc, char **argv) |
8280 | { |
8281 | bool early_exit; |
8282 | |
8283 | set_progname (argv[0]); |
8284 | expand_at_files (argc: &argc, argv: &argv); |
8285 | decode_argv (argc, argv: const_cast <const char **> (argv)); |
8286 | global_initializations (); |
8287 | build_multilib_strings (); |
8288 | set_up_specs (); |
8289 | putenv_COLLECT_AS_OPTIONS (vec: assembler_options); |
8290 | putenv_COLLECT_GCC (argv0: argv[0]); |
8291 | maybe_putenv_COLLECT_LTO_WRAPPER (); |
8292 | maybe_putenv_OFFLOAD_TARGETS (); |
8293 | handle_unrecognized_options (); |
8294 | |
8295 | if (completion) |
8296 | { |
8297 | m_option_proposer.suggest_completion (option_prefix: completion); |
8298 | return 0; |
8299 | } |
8300 | |
8301 | if (!maybe_print_and_exit ()) |
8302 | return 0; |
8303 | |
8304 | early_exit = prepare_infiles (); |
8305 | if (early_exit) |
8306 | return get_exit_code (); |
8307 | |
8308 | do_spec_on_infiles (); |
8309 | maybe_run_linker (argv0: argv[0]); |
8310 | final_actions (); |
8311 | return get_exit_code (); |
8312 | } |
8313 | |
8314 | /* Locate the final component of argv[0] after any leading path, and set |
8315 | the program name accordingly. */ |
8316 | |
8317 | void |
8318 | driver::set_progname (const char *argv0) const |
8319 | { |
8320 | const char *p = argv0 + strlen (s: argv0); |
8321 | while (p != argv0 && !IS_DIR_SEPARATOR (p[-1])) |
8322 | --p; |
8323 | progname = p; |
8324 | |
8325 | xmalloc_set_program_name (progname); |
8326 | } |
8327 | |
8328 | /* Expand any @ files within the command-line args, |
8329 | setting at_file_supplied if any were expanded. */ |
8330 | |
8331 | void |
8332 | driver::expand_at_files (int *argc, char ***argv) const |
8333 | { |
8334 | char **old_argv = *argv; |
8335 | |
8336 | expandargv (argc, argv); |
8337 | |
8338 | /* Determine if any expansions were made. */ |
8339 | if (*argv != old_argv) |
8340 | at_file_supplied = true; |
8341 | } |
8342 | |
8343 | /* Decode the command-line arguments from argc/argv into the |
8344 | decoded_options array. */ |
8345 | |
8346 | void |
8347 | driver::decode_argv (int argc, const char **argv) |
8348 | { |
8349 | init_opts_obstack (); |
8350 | init_options_struct (opts: &global_options, opts_set: &global_options_set); |
8351 | |
8352 | decode_cmdline_options_to_array (argc, argv, |
8353 | CL_DRIVER, |
8354 | decoded_options: &decoded_options, decoded_options_count: &decoded_options_count); |
8355 | } |
8356 | |
8357 | /* Perform various initializations and setup. */ |
8358 | |
8359 | void |
8360 | driver::global_initializations () |
8361 | { |
8362 | /* Unlock the stdio streams. */ |
8363 | unlock_std_streams (); |
8364 | |
8365 | gcc_init_libintl (); |
8366 | |
8367 | diagnostic_initialize (context: global_dc, n_opts: 0); |
8368 | diagnostic_color_init (context: global_dc); |
8369 | diagnostic_urls_init (context: global_dc); |
8370 | global_dc->push_owned_urlifier (make_gcc_urlifier (lang_mask: 0)); |
8371 | |
8372 | #ifdef GCC_DRIVER_HOST_INITIALIZATION |
8373 | /* Perform host dependent initialization when needed. */ |
8374 | GCC_DRIVER_HOST_INITIALIZATION; |
8375 | #endif |
8376 | |
8377 | if (atexit (func: delete_temp_files) != 0) |
8378 | fatal_error (input_location, "atexit failed"); |
8379 | |
8380 | if (signal (SIGINT, SIG_IGN) != SIG_IGN) |
8381 | signal (SIGINT, handler: fatal_signal); |
8382 | #ifdef SIGHUP |
8383 | if (signal (SIGHUP, SIG_IGN) != SIG_IGN) |
8384 | signal (SIGHUP, handler: fatal_signal); |
8385 | #endif |
8386 | if (signal (SIGTERM, SIG_IGN) != SIG_IGN) |
8387 | signal (SIGTERM, handler: fatal_signal); |
8388 | #ifdef SIGPIPE |
8389 | if (signal (SIGPIPE, SIG_IGN) != SIG_IGN) |
8390 | signal (SIGPIPE, handler: fatal_signal); |
8391 | #endif |
8392 | #ifdef SIGCHLD |
8393 | /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will |
8394 | receive the signal. A different setting is inheritable */ |
8395 | signal (SIGCHLD, SIG_DFL); |
8396 | #endif |
8397 | |
8398 | /* Parsing and gimplification sometimes need quite large stack. |
8399 | Increase stack size limits if possible. */ |
8400 | stack_limit_increase (64 * 1024 * 1024); |
8401 | |
8402 | /* Allocate the argument vector. */ |
8403 | alloc_args (); |
8404 | |
8405 | obstack_init (&obstack); |
8406 | } |
8407 | |
8408 | /* Build multilib_select, et. al from the separate lines that make up each |
8409 | multilib selection. */ |
8410 | |
8411 | void |
8412 | driver::build_multilib_strings () const |
8413 | { |
8414 | { |
8415 | const char *p; |
8416 | const char *const *q = multilib_raw; |
8417 | int need_space; |
8418 | |
8419 | obstack_init (&multilib_obstack); |
8420 | while ((p = *q++) != (char *) 0) |
8421 | obstack_grow (&multilib_obstack, p, strlen (p)); |
8422 | |
8423 | obstack_1grow (&multilib_obstack, 0); |
8424 | multilib_select = XOBFINISH (&multilib_obstack, const char *); |
8425 | |
8426 | q = multilib_matches_raw; |
8427 | while ((p = *q++) != (char *) 0) |
8428 | obstack_grow (&multilib_obstack, p, strlen (p)); |
8429 | |
8430 | obstack_1grow (&multilib_obstack, 0); |
8431 | multilib_matches = XOBFINISH (&multilib_obstack, const char *); |
8432 | |
8433 | q = multilib_exclusions_raw; |
8434 | while ((p = *q++) != (char *) 0) |
8435 | obstack_grow (&multilib_obstack, p, strlen (p)); |
8436 | |
8437 | obstack_1grow (&multilib_obstack, 0); |
8438 | multilib_exclusions = XOBFINISH (&multilib_obstack, const char *); |
8439 | |
8440 | q = multilib_reuse_raw; |
8441 | while ((p = *q++) != (char *) 0) |
8442 | obstack_grow (&multilib_obstack, p, strlen (p)); |
8443 | |
8444 | obstack_1grow (&multilib_obstack, 0); |
8445 | multilib_reuse = XOBFINISH (&multilib_obstack, const char *); |
8446 | |
8447 | need_space = false; |
8448 | for (size_t i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++) |
8449 | { |
8450 | if (need_space) |
8451 | obstack_1grow (&multilib_obstack, ' '); |
8452 | obstack_grow (&multilib_obstack, |
8453 | multilib_defaults_raw[i], |
8454 | strlen (multilib_defaults_raw[i])); |
8455 | need_space = true; |
8456 | } |
8457 | |
8458 | obstack_1grow (&multilib_obstack, 0); |
8459 | multilib_defaults = XOBFINISH (&multilib_obstack, const char *); |
8460 | } |
8461 | } |
8462 | |
8463 | /* Set up the spec-handling machinery. */ |
8464 | |
8465 | void |
8466 | driver::set_up_specs () const |
8467 | { |
8468 | const char *spec_machine_suffix; |
8469 | char *specs_file; |
8470 | size_t i; |
8471 | |
8472 | #ifdef INIT_ENVIRONMENT |
8473 | /* Set up any other necessary machine specific environment variables. */ |
8474 | xputenv (INIT_ENVIRONMENT); |
8475 | #endif |
8476 | |
8477 | /* Make a table of what switches there are (switches, n_switches). |
8478 | Make a table of specified input files (infiles, n_infiles). |
8479 | Decode switches that are handled locally. */ |
8480 | |
8481 | process_command (decoded_options_count, decoded_options); |
8482 | |
8483 | /* Initialize the vector of specs to just the default. |
8484 | This means one element containing 0s, as a terminator. */ |
8485 | |
8486 | compilers = XNEWVAR (struct compiler, sizeof default_compilers); |
8487 | memcpy (dest: compilers, src: default_compilers, n: sizeof default_compilers); |
8488 | n_compilers = n_default_compilers; |
8489 | |
8490 | /* Read specs from a file if there is one. */ |
8491 | |
8492 | machine_suffix = concat (spec_host_machine, dir_separator_str, spec_version, |
8493 | accel_dir_suffix, dir_separator_str, NULL); |
8494 | just_machine_suffix = concat (spec_machine, dir_separator_str, NULL); |
8495 | |
8496 | specs_file = find_a_file (pprefix: &startfile_prefixes, name: "specs", R_OK, do_multi: true); |
8497 | /* Read the specs file unless it is a default one. */ |
8498 | if (specs_file != 0 && strcmp (s1: specs_file, s2: "specs")) |
8499 | read_specs (filename: specs_file, main_p: true, user_p: false); |
8500 | else |
8501 | init_spec (); |
8502 | |
8503 | #ifdef ACCEL_COMPILER |
8504 | spec_machine_suffix = machine_suffix; |
8505 | #else |
8506 | spec_machine_suffix = just_machine_suffix; |
8507 | #endif |
8508 | |
8509 | /* We need to check standard_exec_prefix/spec_machine_suffix/specs |
8510 | for any override of as, ld and libraries. */ |
8511 | specs_file = (char *) alloca (strlen (standard_exec_prefix) |
8512 | + strlen (spec_machine_suffix) + sizeof ("specs")); |
8513 | strcpy (dest: specs_file, src: standard_exec_prefix); |
8514 | strcat (dest: specs_file, src: spec_machine_suffix); |
8515 | strcat (dest: specs_file, src: "specs"); |
8516 | if (access (name: specs_file, R_OK) == 0) |
8517 | read_specs (filename: specs_file, main_p: true, user_p: false); |
8518 | |
8519 | /* Process any configure-time defaults specified for the command line |
8520 | options, via OPTION_DEFAULT_SPECS. */ |
8521 | for (i = 0; i < ARRAY_SIZE (option_default_specs); i++) |
8522 | do_option_spec (name: option_default_specs[i].name, |
8523 | spec: option_default_specs[i].spec); |
8524 | |
8525 | /* Process DRIVER_SELF_SPECS, adding any new options to the end |
8526 | of the command line. */ |
8527 | |
8528 | for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++) |
8529 | do_self_spec (driver_self_specs[i]); |
8530 | |
8531 | /* If not cross-compiling, look for executables in the standard |
8532 | places. */ |
8533 | if (*cross_compile == '0') |
8534 | { |
8535 | if (*md_exec_prefix) |
8536 | { |
8537 | add_prefix (pprefix: &exec_prefixes, prefix: md_exec_prefix, component: "GCC", |
8538 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 0); |
8539 | } |
8540 | } |
8541 | |
8542 | /* Process sysroot_suffix_spec. */ |
8543 | if (*sysroot_suffix_spec != 0 |
8544 | && !no_sysroot_suffix |
8545 | && do_spec_2 (spec: sysroot_suffix_spec, NULL) == 0) |
8546 | { |
8547 | if (argbuf.length () > 1) |
8548 | error ("spec failure: more than one argument to " |
8549 | "%<SYSROOT_SUFFIX_SPEC%>"); |
8550 | else if (argbuf.length () == 1) |
8551 | target_sysroot_suffix = xstrdup (argbuf.last ()); |
8552 | } |
8553 | |
8554 | #ifdef HAVE_LD_SYSROOT |
8555 | /* Pass the --sysroot option to the linker, if it supports that. If |
8556 | there is a sysroot_suffix_spec, it has already been processed by |
8557 | this point, so target_system_root really is the system root we |
8558 | should be using. */ |
8559 | if (target_system_root) |
8560 | { |
8561 | obstack_grow (&obstack, "%(sysroot_spec) ", strlen ( "%(sysroot_spec) ")); |
8562 | obstack_grow0 (&obstack, link_spec, strlen (link_spec)); |
8563 | set_spec (name: "link", XOBFINISH (&obstack, const char *), user_p: false); |
8564 | } |
8565 | #endif |
8566 | |
8567 | /* Process sysroot_hdrs_suffix_spec. */ |
8568 | if (*sysroot_hdrs_suffix_spec != 0 |
8569 | && !no_sysroot_suffix |
8570 | && do_spec_2 (spec: sysroot_hdrs_suffix_spec, NULL) == 0) |
8571 | { |
8572 | if (argbuf.length () > 1) |
8573 | error ("spec failure: more than one argument " |
8574 | "to %<SYSROOT_HEADERS_SUFFIX_SPEC%>"); |
8575 | else if (argbuf.length () == 1) |
8576 | target_sysroot_hdrs_suffix = xstrdup (argbuf.last ()); |
8577 | } |
8578 | |
8579 | /* Look for startfiles in the standard places. */ |
8580 | if (*startfile_prefix_spec != 0 |
8581 | && do_spec_2 (spec: startfile_prefix_spec, NULL) == 0 |
8582 | && do_spec_1 (spec: " ", inswitch: 0, NULL) == 0) |
8583 | { |
8584 | for (const char *arg : argbuf) |
8585 | add_sysrooted_prefix (pprefix: &startfile_prefixes, prefix: arg, component: "BINUTILS", |
8586 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 1); |
8587 | } |
8588 | /* We should eventually get rid of all these and stick to |
8589 | startfile_prefix_spec exclusively. */ |
8590 | else if (*cross_compile == '0' || target_system_root) |
8591 | { |
8592 | if (*md_startfile_prefix) |
8593 | add_sysrooted_prefix (pprefix: &startfile_prefixes, prefix: md_startfile_prefix, |
8594 | component: "GCC", priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 1); |
8595 | |
8596 | if (*md_startfile_prefix_1) |
8597 | add_sysrooted_prefix (pprefix: &startfile_prefixes, prefix: md_startfile_prefix_1, |
8598 | component: "GCC", priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 1); |
8599 | |
8600 | /* If standard_startfile_prefix is relative, base it on |
8601 | standard_exec_prefix. This lets us move the installed tree |
8602 | as a unit. If GCC_EXEC_PREFIX is defined, base |
8603 | standard_startfile_prefix on that as well. |
8604 | |
8605 | If the prefix is relative, only search it for native compilers; |
8606 | otherwise we will search a directory containing host libraries. */ |
8607 | if (IS_ABSOLUTE_PATH (standard_startfile_prefix)) |
8608 | add_sysrooted_prefix (pprefix: &startfile_prefixes, |
8609 | prefix: standard_startfile_prefix, component: "BINUTILS", |
8610 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 1); |
8611 | else if (*cross_compile == '0') |
8612 | { |
8613 | add_prefix (pprefix: &startfile_prefixes, |
8614 | prefix: concat (gcc_exec_prefix |
8615 | ? gcc_exec_prefix : standard_exec_prefix, |
8616 | machine_suffix, |
8617 | standard_startfile_prefix, NULL), |
8618 | NULL, priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 1); |
8619 | } |
8620 | |
8621 | /* Sysrooted prefixes are relocated because target_system_root is |
8622 | also relocated by gcc_exec_prefix. */ |
8623 | if (*standard_startfile_prefix_1) |
8624 | add_sysrooted_prefix (pprefix: &startfile_prefixes, |
8625 | prefix: standard_startfile_prefix_1, component: "BINUTILS", |
8626 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 1); |
8627 | if (*standard_startfile_prefix_2) |
8628 | add_sysrooted_prefix (pprefix: &startfile_prefixes, |
8629 | prefix: standard_startfile_prefix_2, component: "BINUTILS", |
8630 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 1); |
8631 | } |
8632 | |
8633 | /* Process any user specified specs in the order given on the command |
8634 | line. */ |
8635 | for (struct user_specs *uptr = user_specs_head; uptr; uptr = uptr->next) |
8636 | { |
8637 | char *filename = find_a_file (pprefix: &startfile_prefixes, name: uptr->filename, |
8638 | R_OK, do_multi: true); |
8639 | read_specs (filename: filename ? filename : uptr->filename, main_p: false, user_p: true); |
8640 | } |
8641 | |
8642 | /* Process any user self specs. */ |
8643 | { |
8644 | struct spec_list *sl; |
8645 | for (sl = specs; sl; sl = sl->next) |
8646 | if (sl->name_len == sizeof "self_spec"- 1 |
8647 | && !strcmp (s1: sl->name, s2: "self_spec")) |
8648 | do_self_spec (spec: *sl->ptr_spec); |
8649 | } |
8650 | |
8651 | if (compare_debug) |
8652 | { |
8653 | enum save_temps save; |
8654 | |
8655 | if (!compare_debug_second) |
8656 | { |
8657 | n_switches_debug_check[1] = n_switches; |
8658 | n_switches_alloc_debug_check[1] = n_switches_alloc; |
8659 | switches_debug_check[1] = XDUPVEC (struct switchstr, switches, |
8660 | n_switches_alloc); |
8661 | |
8662 | do_self_spec (spec: "%:compare-debug-self-opt()"); |
8663 | n_switches_debug_check[0] = n_switches; |
8664 | n_switches_alloc_debug_check[0] = n_switches_alloc; |
8665 | switches_debug_check[0] = switches; |
8666 | |
8667 | n_switches = n_switches_debug_check[1]; |
8668 | n_switches_alloc = n_switches_alloc_debug_check[1]; |
8669 | switches = switches_debug_check[1]; |
8670 | } |
8671 | |
8672 | /* Avoid crash when computing %j in this early. */ |
8673 | save = save_temps_flag; |
8674 | save_temps_flag = SAVE_TEMPS_NONE; |
8675 | |
8676 | compare_debug = -compare_debug; |
8677 | do_self_spec (spec: "%:compare-debug-self-opt()"); |
8678 | |
8679 | save_temps_flag = save; |
8680 | |
8681 | if (!compare_debug_second) |
8682 | { |
8683 | n_switches_debug_check[1] = n_switches; |
8684 | n_switches_alloc_debug_check[1] = n_switches_alloc; |
8685 | switches_debug_check[1] = switches; |
8686 | compare_debug = -compare_debug; |
8687 | n_switches = n_switches_debug_check[0]; |
8688 | n_switches_alloc = n_switches_debug_check[0]; |
8689 | switches = switches_debug_check[0]; |
8690 | } |
8691 | } |
8692 | |
8693 | |
8694 | /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */ |
8695 | if (gcc_exec_prefix) |
8696 | gcc_exec_prefix = concat (gcc_exec_prefix, spec_host_machine, |
8697 | dir_separator_str, spec_version, |
8698 | accel_dir_suffix, dir_separator_str, NULL); |
8699 | |
8700 | /* Now we have the specs. |
8701 | Set the `valid' bits for switches that match anything in any spec. */ |
8702 | |
8703 | validate_all_switches (); |
8704 | |
8705 | /* Now that we have the switches and the specs, set |
8706 | the subdirectory based on the options. */ |
8707 | set_multilib_dir (); |
8708 | } |
8709 | |
8710 | /* Set up to remember the pathname of gcc and any options |
8711 | needed for collect. We use argv[0] instead of progname because |
8712 | we need the complete pathname. */ |
8713 | |
8714 | void |
8715 | driver::putenv_COLLECT_GCC (const char *argv0) const |
8716 | { |
8717 | obstack_init (&collect_obstack); |
8718 | obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ( "COLLECT_GCC=") - 1); |
8719 | obstack_grow (&collect_obstack, argv0, strlen (argv0) + 1); |
8720 | xputenv (XOBFINISH (&collect_obstack, char *)); |
8721 | } |
8722 | |
8723 | /* Set up to remember the pathname of the lto wrapper. */ |
8724 | |
8725 | void |
8726 | driver::maybe_putenv_COLLECT_LTO_WRAPPER () const |
8727 | { |
8728 | char *lto_wrapper_file; |
8729 | |
8730 | if (have_c) |
8731 | lto_wrapper_file = NULL; |
8732 | else |
8733 | lto_wrapper_file = find_a_program (name: "lto-wrapper"); |
8734 | if (lto_wrapper_file) |
8735 | { |
8736 | lto_wrapper_file = convert_white_space (lto_wrapper_file); |
8737 | set_static_spec_owned (spec: <o_wrapper_spec, val: lto_wrapper_file); |
8738 | obstack_init (&collect_obstack); |
8739 | obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=", |
8740 | sizeof ("COLLECT_LTO_WRAPPER=") - 1); |
8741 | obstack_grow (&collect_obstack, lto_wrapper_spec, |
8742 | strlen (lto_wrapper_spec) + 1); |
8743 | xputenv (XOBFINISH (&collect_obstack, char *)); |
8744 | } |
8745 | |
8746 | } |
8747 | |
8748 | /* Set up to remember the names of offload targets. */ |
8749 | |
8750 | void |
8751 | driver::maybe_putenv_OFFLOAD_TARGETS () const |
8752 | { |
8753 | if (offload_targets && offload_targets[0] != '\0') |
8754 | { |
8755 | obstack_grow (&collect_obstack, "OFFLOAD_TARGET_NAMES=", |
8756 | sizeof ("OFFLOAD_TARGET_NAMES=") - 1); |
8757 | obstack_grow (&collect_obstack, offload_targets, |
8758 | strlen (offload_targets) + 1); |
8759 | xputenv (XOBFINISH (&collect_obstack, char *)); |
8760 | #if OFFLOAD_DEFAULTED |
8761 | if (offload_targets_default) |
8762 | xputenv ("OFFLOAD_TARGET_DEFAULT=1"); |
8763 | #endif |
8764 | } |
8765 | |
8766 | free (ptr: offload_targets); |
8767 | offload_targets = NULL; |
8768 | } |
8769 | |
8770 | /* Reject switches that no pass was interested in. */ |
8771 | |
8772 | void |
8773 | driver::handle_unrecognized_options () |
8774 | { |
8775 | for (size_t i = 0; (int) i < n_switches; i++) |
8776 | if (! switches[i].validated) |
8777 | { |
8778 | const char *hint = m_option_proposer.suggest_option (bad_opt: switches[i].part1); |
8779 | if (hint) |
8780 | error ("unrecognized command-line option %<-%s%>;" |
8781 | " did you mean %<-%s%>?", |
8782 | switches[i].part1, hint); |
8783 | else |
8784 | error ("unrecognized command-line option %<-%s%>", |
8785 | switches[i].part1); |
8786 | } |
8787 | } |
8788 | |
8789 | /* Handle the various -print-* options, returning 0 if the driver |
8790 | should exit, or nonzero if the driver should continue. */ |
8791 | |
8792 | int |
8793 | driver::maybe_print_and_exit () const |
8794 | { |
8795 | if (print_search_dirs) |
8796 | { |
8797 | printf (_("install: %s%s\n"), |
8798 | gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix, |
8799 | gcc_exec_prefix ? "": machine_suffix); |
8800 | printf (_("programs: %s\n"), |
8801 | build_search_list (paths: &exec_prefixes, prefix: "", check_dir: false, do_multi: false)); |
8802 | printf (_("libraries: %s\n"), |
8803 | build_search_list (paths: &startfile_prefixes, prefix: "", check_dir: false, do_multi: true)); |
8804 | return (0); |
8805 | } |
8806 | |
8807 | if (print_file_name) |
8808 | { |
8809 | printf (format: "%s\n", find_file (print_file_name)); |
8810 | return (0); |
8811 | } |
8812 | |
8813 | if (print_prog_name) |
8814 | { |
8815 | if (use_ld != NULL && ! strcmp (print_prog_name, s2: "ld")) |
8816 | { |
8817 | /* Append USE_LD to the default linker. */ |
8818 | #ifdef DEFAULT_LINKER |
8819 | char *ld; |
8820 | # ifdef HAVE_HOST_EXECUTABLE_SUFFIX |
8821 | int len = (sizeof (DEFAULT_LINKER) |
8822 | - sizeof (HOST_EXECUTABLE_SUFFIX)); |
8823 | ld = NULL; |
8824 | if (len > 0) |
8825 | { |
8826 | char *default_linker = xstrdup (DEFAULT_LINKER); |
8827 | /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains |
8828 | HOST_EXECUTABLE_SUFFIX. */ |
8829 | if (! strcmp (&default_linker[len], HOST_EXECUTABLE_SUFFIX)) |
8830 | { |
8831 | default_linker[len] = '\0'; |
8832 | ld = concat (default_linker, use_ld, |
8833 | HOST_EXECUTABLE_SUFFIX, NULL); |
8834 | } |
8835 | } |
8836 | if (ld == NULL) |
8837 | # endif |
8838 | ld = concat (DEFAULT_LINKER, use_ld, NULL); |
8839 | if (access (ld, X_OK) == 0) |
8840 | { |
8841 | printf ("%s\n", ld); |
8842 | return (0); |
8843 | } |
8844 | #endif |
8845 | print_prog_name = concat (print_prog_name, use_ld, NULL); |
8846 | } |
8847 | char *newname = find_a_program (print_prog_name); |
8848 | printf (format: "%s\n", (newname ? newname : print_prog_name)); |
8849 | return (0); |
8850 | } |
8851 | |
8852 | if (print_multi_lib) |
8853 | { |
8854 | print_multilib_info (); |
8855 | return (0); |
8856 | } |
8857 | |
8858 | if (print_multi_directory) |
8859 | { |
8860 | if (multilib_dir == NULL) |
8861 | printf (format: ".\n"); |
8862 | else |
8863 | printf (format: "%s\n", multilib_dir); |
8864 | return (0); |
8865 | } |
8866 | |
8867 | if (print_multiarch) |
8868 | { |
8869 | if (multiarch_dir == NULL) |
8870 | printf (format: "\n"); |
8871 | else |
8872 | printf (format: "%s\n", multiarch_dir); |
8873 | return (0); |
8874 | } |
8875 | |
8876 | if (print_sysroot) |
8877 | { |
8878 | if (target_system_root) |
8879 | { |
8880 | if (target_sysroot_suffix) |
8881 | printf (format: "%s%s\n", target_system_root, target_sysroot_suffix); |
8882 | else |
8883 | printf (format: "%s\n", target_system_root); |
8884 | } |
8885 | return (0); |
8886 | } |
8887 | |
8888 | if (print_multi_os_directory) |
8889 | { |
8890 | if (multilib_os_dir == NULL) |
8891 | printf (format: ".\n"); |
8892 | else |
8893 | printf (format: "%s\n", multilib_os_dir); |
8894 | return (0); |
8895 | } |
8896 | |
8897 | if (print_sysroot_headers_suffix) |
8898 | { |
8899 | if (*sysroot_hdrs_suffix_spec) |
8900 | { |
8901 | printf(format: "%s\n", (target_sysroot_hdrs_suffix |
8902 | ? target_sysroot_hdrs_suffix |
8903 | : "")); |
8904 | return (0); |
8905 | } |
8906 | else |
8907 | /* The error status indicates that only one set of fixed |
8908 | headers should be built. */ |
8909 | fatal_error (input_location, |
8910 | "not configured with sysroot headers suffix"); |
8911 | } |
8912 | |
8913 | if (print_help_list) |
8914 | { |
8915 | display_help (); |
8916 | |
8917 | if (! verbose_flag) |
8918 | { |
8919 | printf (_("\nFor bug reporting instructions, please see:\n")); |
8920 | printf (format: "%s.\n", bug_report_url); |
8921 | |
8922 | return (0); |
8923 | } |
8924 | |
8925 | /* We do not exit here. Instead we have created a fake input file |
8926 | called 'help-dummy' which needs to be compiled, and we pass this |
8927 | on the various sub-processes, along with the --help switch. |
8928 | Ensure their output appears after ours. */ |
8929 | fputc (c: '\n', stdout); |
8930 | fflush (stdout); |
8931 | } |
8932 | |
8933 | if (print_version) |
8934 | { |
8935 | printf (_("%s %s%s\n"), progname, pkgversion_string, |
8936 | version_string); |
8937 | printf (format: "Copyright %s 2025 Free Software Foundation, Inc.\n", |
8938 | _("(C)")); |
8939 | fputs (_("This is free software; see the source for copying conditions. There is NO\n\ |
8940 | warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"), |
8941 | stdout); |
8942 | if (! verbose_flag) |
8943 | return 0; |
8944 | |
8945 | /* We do not exit here. We use the same mechanism of --help to print |
8946 | the version of the sub-processes. */ |
8947 | fputc (c: '\n', stdout); |
8948 | fflush (stdout); |
8949 | } |
8950 | |
8951 | if (verbose_flag) |
8952 | { |
8953 | print_configuration (stderr); |
8954 | if (n_infiles == 0) |
8955 | return (0); |
8956 | } |
8957 | |
8958 | return 1; |
8959 | } |
8960 | |
8961 | /* Figure out what to do with each input file. |
8962 | Return true if we need to exit early from "main", false otherwise. */ |
8963 | |
8964 | bool |
8965 | driver::prepare_infiles () |
8966 | { |
8967 | size_t i; |
8968 | int lang_n_infiles = 0; |
8969 | |
8970 | if (n_infiles == added_libraries) |
8971 | fatal_error (input_location, "no input files"); |
8972 | |
8973 | if (seen_error ()) |
8974 | /* Early exit needed from main. */ |
8975 | return true; |
8976 | |
8977 | /* Make a place to record the compiler output file names |
8978 | that correspond to the input files. */ |
8979 | |
8980 | i = n_infiles; |
8981 | i += lang_specific_extra_outfiles; |
8982 | outfiles = XCNEWVEC (const char *, i); |
8983 | |
8984 | /* Record which files were specified explicitly as link input. */ |
8985 | |
8986 | explicit_link_files = XCNEWVEC (char, n_infiles); |
8987 | |
8988 | combine_inputs = have_o || flag_wpa; |
8989 | |
8990 | for (i = 0; (int) i < n_infiles; i++) |
8991 | { |
8992 | const char *name = infiles[i].name; |
8993 | struct compiler *compiler = lookup_compiler (name, |
8994 | strlen (s: name), |
8995 | infiles[i].language); |
8996 | |
8997 | if (compiler && !(compiler->combinable)) |
8998 | combine_inputs = false; |
8999 | |
9000 | if (lang_n_infiles > 0 && compiler != input_file_compiler |
9001 | && infiles[i].language && infiles[i].language[0] != '*') |
9002 | infiles[i].incompiler = compiler; |
9003 | else if (compiler) |
9004 | { |
9005 | lang_n_infiles++; |
9006 | input_file_compiler = compiler; |
9007 | infiles[i].incompiler = compiler; |
9008 | } |
9009 | else |
9010 | { |
9011 | /* Since there is no compiler for this input file, assume it is a |
9012 | linker file. */ |
9013 | explicit_link_files[i] = 1; |
9014 | infiles[i].incompiler = NULL; |
9015 | } |
9016 | infiles[i].compiled = false; |
9017 | infiles[i].preprocessed = false; |
9018 | } |
9019 | |
9020 | if (!combine_inputs && have_c && have_o && lang_n_infiles > 1) |
9021 | fatal_error (input_location, |
9022 | "cannot specify %<-o%> with %<-c%>, %<-S%> or %<-E%> " |
9023 | "with multiple files"); |
9024 | |
9025 | /* No early exit needed from main; we can continue. */ |
9026 | return false; |
9027 | } |
9028 | |
9029 | /* Run the spec machinery on each input file. */ |
9030 | |
9031 | void |
9032 | driver::do_spec_on_infiles () const |
9033 | { |
9034 | size_t i; |
9035 | |
9036 | for (i = 0; (int) i < n_infiles; i++) |
9037 | { |
9038 | int this_file_error = 0; |
9039 | |
9040 | /* Tell do_spec what to substitute for %i. */ |
9041 | |
9042 | input_file_number = i; |
9043 | set_input (infiles[i].name); |
9044 | |
9045 | if (infiles[i].compiled) |
9046 | continue; |
9047 | |
9048 | /* Use the same thing in %o, unless cp->spec says otherwise. */ |
9049 | |
9050 | outfiles[i] = gcc_input_filename; |
9051 | |
9052 | /* Figure out which compiler from the file's suffix. */ |
9053 | |
9054 | input_file_compiler |
9055 | = lookup_compiler (infiles[i].name, input_filename_length, |
9056 | infiles[i].language); |
9057 | |
9058 | if (input_file_compiler) |
9059 | { |
9060 | /* Ok, we found an applicable compiler. Run its spec. */ |
9061 | |
9062 | if (input_file_compiler->spec[0] == '#') |
9063 | { |
9064 | error ("%s: %s compiler not installed on this system", |
9065 | gcc_input_filename, &input_file_compiler->spec[1]); |
9066 | this_file_error = 1; |
9067 | } |
9068 | else |
9069 | { |
9070 | int value; |
9071 | |
9072 | if (compare_debug) |
9073 | { |
9074 | free (ptr: debug_check_temp_file[0]); |
9075 | debug_check_temp_file[0] = NULL; |
9076 | |
9077 | free (ptr: debug_check_temp_file[1]); |
9078 | debug_check_temp_file[1] = NULL; |
9079 | } |
9080 | |
9081 | value = do_spec (spec: input_file_compiler->spec); |
9082 | infiles[i].compiled = true; |
9083 | if (value < 0) |
9084 | this_file_error = 1; |
9085 | else if (compare_debug && debug_check_temp_file[0]) |
9086 | { |
9087 | if (verbose_flag) |
9088 | inform (UNKNOWN_LOCATION, |
9089 | "recompiling with %<-fcompare-debug%>"); |
9090 | |
9091 | compare_debug = -compare_debug; |
9092 | n_switches = n_switches_debug_check[1]; |
9093 | n_switches_alloc = n_switches_alloc_debug_check[1]; |
9094 | switches = switches_debug_check[1]; |
9095 | |
9096 | value = do_spec (spec: input_file_compiler->spec); |
9097 | |
9098 | compare_debug = -compare_debug; |
9099 | n_switches = n_switches_debug_check[0]; |
9100 | n_switches_alloc = n_switches_alloc_debug_check[0]; |
9101 | switches = switches_debug_check[0]; |
9102 | |
9103 | if (value < 0) |
9104 | { |
9105 | error ("during %<-fcompare-debug%> recompilation"); |
9106 | this_file_error = 1; |
9107 | } |
9108 | |
9109 | gcc_assert (debug_check_temp_file[1] |
9110 | && filename_cmp (debug_check_temp_file[0], |
9111 | debug_check_temp_file[1])); |
9112 | |
9113 | if (verbose_flag) |
9114 | inform (UNKNOWN_LOCATION, "comparing final insns dumps"); |
9115 | |
9116 | if (compare_files (cmpfile: debug_check_temp_file)) |
9117 | this_file_error = 1; |
9118 | } |
9119 | |
9120 | if (compare_debug) |
9121 | { |
9122 | free (ptr: debug_check_temp_file[0]); |
9123 | debug_check_temp_file[0] = NULL; |
9124 | |
9125 | free (ptr: debug_check_temp_file[1]); |
9126 | debug_check_temp_file[1] = NULL; |
9127 | } |
9128 | } |
9129 | } |
9130 | |
9131 | /* If this file's name does not contain a recognized suffix, |
9132 | record it as explicit linker input. */ |
9133 | |
9134 | else |
9135 | explicit_link_files[i] = 1; |
9136 | |
9137 | /* Clear the delete-on-failure queue, deleting the files in it |
9138 | if this compilation failed. */ |
9139 | |
9140 | if (this_file_error) |
9141 | { |
9142 | delete_failure_queue (); |
9143 | errorcount++; |
9144 | } |
9145 | /* If this compilation succeeded, don't delete those files later. */ |
9146 | clear_failure_queue (); |
9147 | } |
9148 | |
9149 | /* Reset the input file name to the first compile/object file name, for use |
9150 | with %b in LINK_SPEC. We use the first input file that we can find |
9151 | a compiler to compile it instead of using infiles.language since for |
9152 | languages other than C we use aliases that we then lookup later. */ |
9153 | if (n_infiles > 0) |
9154 | { |
9155 | int i; |
9156 | |
9157 | for (i = 0; i < n_infiles ; i++) |
9158 | if (infiles[i].incompiler |
9159 | || (infiles[i].language && infiles[i].language[0] != '*')) |
9160 | { |
9161 | set_input (infiles[i].name); |
9162 | break; |
9163 | } |
9164 | } |
9165 | |
9166 | if (!seen_error ()) |
9167 | { |
9168 | /* Make sure INPUT_FILE_NUMBER points to first available open |
9169 | slot. */ |
9170 | input_file_number = n_infiles; |
9171 | if (lang_specific_pre_link ()) |
9172 | errorcount++; |
9173 | } |
9174 | } |
9175 | |
9176 | /* If we have to run the linker, do it now. */ |
9177 | |
9178 | void |
9179 | driver::maybe_run_linker (const char *argv0) const |
9180 | { |
9181 | size_t i; |
9182 | int linker_was_run = 0; |
9183 | int num_linker_inputs; |
9184 | |
9185 | /* Determine if there are any linker input files. */ |
9186 | num_linker_inputs = 0; |
9187 | for (i = 0; (int) i < n_infiles; i++) |
9188 | if (explicit_link_files[i] || outfiles[i] != NULL) |
9189 | num_linker_inputs++; |
9190 | |
9191 | /* Arrange for temporary file names created during linking to take |
9192 | on names related with the linker output rather than with the |
9193 | inputs when appropriate. */ |
9194 | if (outbase && *outbase) |
9195 | { |
9196 | if (dumpdir) |
9197 | { |
9198 | char *tofree = dumpdir; |
9199 | gcc_checking_assert (strlen (dumpdir) == dumpdir_length); |
9200 | dumpdir = concat (dumpdir, outbase, ".", NULL); |
9201 | free (ptr: tofree); |
9202 | } |
9203 | else |
9204 | dumpdir = concat (outbase, ".", NULL); |
9205 | dumpdir_length += strlen (s: outbase) + 1; |
9206 | dumpdir_trailing_dash_added = true; |
9207 | } |
9208 | else if (dumpdir_trailing_dash_added) |
9209 | { |
9210 | gcc_assert (dumpdir[dumpdir_length - 1] == '-'); |
9211 | dumpdir[dumpdir_length - 1] = '.'; |
9212 | } |
9213 | |
9214 | if (dumpdir_trailing_dash_added) |
9215 | { |
9216 | gcc_assert (dumpdir_length > 0); |
9217 | gcc_assert (dumpdir[dumpdir_length - 1] == '.'); |
9218 | dumpdir_length--; |
9219 | } |
9220 | |
9221 | free (ptr: outbase); |
9222 | input_basename = outbase = NULL; |
9223 | outbase_length = suffixed_basename_length = basename_length = 0; |
9224 | |
9225 | /* Run ld to link all the compiler output files. */ |
9226 | |
9227 | if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2) |
9228 | { |
9229 | int tmp = execution_count; |
9230 | |
9231 | detect_jobserver (); |
9232 | |
9233 | if (! have_c) |
9234 | { |
9235 | #if HAVE_LTO_PLUGIN > 0 |
9236 | #if HAVE_LTO_PLUGIN == 2 |
9237 | const char *fno_use_linker_plugin = "fno-use-linker-plugin"; |
9238 | #else |
9239 | const char *fuse_linker_plugin = "fuse-linker-plugin"; |
9240 | #endif |
9241 | #endif |
9242 | |
9243 | /* We'll use ld if we can't find collect2. */ |
9244 | if (! strcmp (s1: linker_name_spec, s2: "collect2")) |
9245 | { |
9246 | char *s = find_a_program (name: "collect2"); |
9247 | if (s == NULL) |
9248 | set_static_spec_shared (spec: &linker_name_spec, val: "ld"); |
9249 | } |
9250 | |
9251 | #if HAVE_LTO_PLUGIN > 0 |
9252 | #if HAVE_LTO_PLUGIN == 2 |
9253 | if (!switch_matches (atom: fno_use_linker_plugin, |
9254 | end_atom: fno_use_linker_plugin |
9255 | + strlen (s: fno_use_linker_plugin), starred: 0)) |
9256 | #else |
9257 | if (switch_matches (fuse_linker_plugin, |
9258 | fuse_linker_plugin |
9259 | + strlen (fuse_linker_plugin), 0)) |
9260 | #endif |
9261 | { |
9262 | char *temp_spec = find_a_file (pprefix: &exec_prefixes, |
9263 | LTOPLUGINSONAME, R_OK, |
9264 | do_multi: false); |
9265 | if (!temp_spec) |
9266 | fatal_error (input_location, |
9267 | "%<-fuse-linker-plugin%>, but %s not found", |
9268 | LTOPLUGINSONAME); |
9269 | linker_plugin_file_spec = convert_white_space (temp_spec); |
9270 | } |
9271 | #endif |
9272 | set_static_spec_shared (spec: <o_gcc_spec, val: argv0); |
9273 | } |
9274 | |
9275 | /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables |
9276 | for collect. */ |
9277 | putenv_from_prefixes (paths: &exec_prefixes, env_var: "COMPILER_PATH", do_multi: false); |
9278 | putenv_from_prefixes (paths: &startfile_prefixes, LIBRARY_PATH_ENV, do_multi: true); |
9279 | |
9280 | if (print_subprocess_help == 1) |
9281 | { |
9282 | printf (_("\nLinker options\n==============\n\n")); |
9283 | printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\"" |
9284 | " to the linker.\n\n")); |
9285 | fflush (stdout); |
9286 | } |
9287 | int value = do_spec (spec: link_command_spec); |
9288 | if (value < 0) |
9289 | errorcount = 1; |
9290 | linker_was_run = (tmp != execution_count); |
9291 | } |
9292 | |
9293 | /* If options said don't run linker, |
9294 | complain about input files to be given to the linker. */ |
9295 | |
9296 | if (! linker_was_run && !seen_error ()) |
9297 | for (i = 0; (int) i < n_infiles; i++) |
9298 | if (explicit_link_files[i] |
9299 | && !(infiles[i].language && infiles[i].language[0] == '*')) |
9300 | { |
9301 | warning (0, "%s: linker input file unused because linking not done", |
9302 | outfiles[i]); |
9303 | if (access (name: outfiles[i], F_OK) < 0) |
9304 | /* This is can be an indication the user specifed an errorneous |
9305 | separated option value, (or used the wrong prefix for an |
9306 | option). */ |
9307 | error ("%s: linker input file not found: %m", outfiles[i]); |
9308 | } |
9309 | } |
9310 | |
9311 | /* The end of "main". */ |
9312 | |
9313 | void |
9314 | driver::final_actions () const |
9315 | { |
9316 | /* Delete some or all of the temporary files we made. */ |
9317 | |
9318 | if (seen_error ()) |
9319 | delete_failure_queue (); |
9320 | delete_temp_files (); |
9321 | |
9322 | if (totruncate_file != NULL && !seen_error ()) |
9323 | /* Truncate file specified by -truncate. |
9324 | Used by lto-wrapper to reduce temporary disk-space usage. */ |
9325 | truncate(file: totruncate_file, length: 0); |
9326 | |
9327 | if (print_help_list) |
9328 | { |
9329 | printf (format: ("\nFor bug reporting instructions, please see:\n")); |
9330 | printf (format: "%s\n", bug_report_url); |
9331 | } |
9332 | } |
9333 | |
9334 | /* Detect whether jobserver is active and working. If not drop |
9335 | --jobserver-auth from MAKEFLAGS. */ |
9336 | |
9337 | void |
9338 | driver::detect_jobserver () const |
9339 | { |
9340 | jobserver_info jinfo; |
9341 | if (!jinfo.is_active && !jinfo.skipped_makeflags.empty ()) |
9342 | xputenv (string: xstrdup (jinfo.skipped_makeflags.c_str ())); |
9343 | } |
9344 | |
9345 | /* Determine what the exit code of the driver should be. */ |
9346 | |
9347 | int |
9348 | driver::get_exit_code () const |
9349 | { |
9350 | return (signal_count != 0 ? 2 |
9351 | : seen_error () ? (pass_exit_codes ? greatest_status : 1) |
9352 | : 0); |
9353 | } |
9354 | |
9355 | /* Find the proper compilation spec for the file name NAME, |
9356 | whose length is LENGTH. LANGUAGE is the specified language, |
9357 | or 0 if this file is to be passed to the linker. */ |
9358 | |
9359 | static struct compiler * |
9360 | lookup_compiler (const char *name, size_t length, const char *language) |
9361 | { |
9362 | struct compiler *cp; |
9363 | |
9364 | /* If this was specified by the user to be a linker input, indicate that. */ |
9365 | if (language != 0 && language[0] == '*') |
9366 | return 0; |
9367 | |
9368 | /* Otherwise, look for the language, if one is spec'd. */ |
9369 | if (language != 0) |
9370 | { |
9371 | for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) |
9372 | if (cp->suffix[0] == '@' && !strcmp (s1: cp->suffix + 1, s2: language)) |
9373 | { |
9374 | if (name != NULL && strcmp (s1: name, s2: "-") == 0 |
9375 | && (strcmp (s1: cp->suffix, s2: "@c-header") == 0 |
9376 | || strcmp (s1: cp->suffix, s2: "@c++-header") == 0) |
9377 | && !have_E) |
9378 | fatal_error (input_location, |
9379 | "cannot use %<-%> as input filename for a " |
9380 | "precompiled header"); |
9381 | |
9382 | return cp; |
9383 | } |
9384 | |
9385 | error ("language %s not recognized", language); |
9386 | return 0; |
9387 | } |
9388 | |
9389 | /* Look for a suffix. */ |
9390 | for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) |
9391 | { |
9392 | if (/* The suffix `-' matches only the file name `-'. */ |
9393 | (!strcmp (s1: cp->suffix, s2: "-") && !strcmp (s1: name, s2: "-")) |
9394 | || (strlen (s: cp->suffix) < length |
9395 | /* See if the suffix matches the end of NAME. */ |
9396 | && !strcmp (s1: cp->suffix, |
9397 | s2: name + length - strlen (s: cp->suffix)) |
9398 | )) |
9399 | break; |
9400 | } |
9401 | |
9402 | #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM) |
9403 | /* Look again, but case-insensitively this time. */ |
9404 | if (cp < compilers) |
9405 | for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) |
9406 | { |
9407 | if (/* The suffix `-' matches only the file name `-'. */ |
9408 | (!strcmp (cp->suffix, "-") && !strcmp (name, "-")) |
9409 | || (strlen (cp->suffix) < length |
9410 | /* See if the suffix matches the end of NAME. */ |
9411 | && ((!strcmp (cp->suffix, |
9412 | name + length - strlen (cp->suffix)) |
9413 | || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ")) |
9414 | && !strcasecmp (cp->suffix, |
9415 | name + length - strlen (cp->suffix))) |
9416 | )) |
9417 | break; |
9418 | } |
9419 | #endif |
9420 | |
9421 | if (cp >= compilers) |
9422 | { |
9423 | if (cp->spec[0] != '@') |
9424 | /* A non-alias entry: return it. */ |
9425 | return cp; |
9426 | |
9427 | /* An alias entry maps a suffix to a language. |
9428 | Search for the language; pass 0 for NAME and LENGTH |
9429 | to avoid infinite recursion if language not found. */ |
9430 | return lookup_compiler (NULL, length: 0, language: cp->spec + 1); |
9431 | } |
9432 | return 0; |
9433 | } |
9434 | |
9435 | static char * |
9436 | save_string (const char *s, int len) |
9437 | { |
9438 | char *result = XNEWVEC (char, len + 1); |
9439 | |
9440 | gcc_checking_assert (strlen (s) >= (unsigned int) len); |
9441 | memcpy (dest: result, src: s, n: len); |
9442 | result[len] = 0; |
9443 | return result; |
9444 | } |
9445 | |
9446 | |
9447 | static inline void |
9448 | validate_switches_from_spec (const char *spec, bool user) |
9449 | { |
9450 | const char *p = spec; |
9451 | char c; |
9452 | while ((c = *p++)) |
9453 | if (c == '%' |
9454 | && (*p == '{' |
9455 | || *p == '<' |
9456 | || (*p == 'W' && *++p == '{') |
9457 | || (*p == '@' && *++p == '{'))) |
9458 | /* We have a switch spec. */ |
9459 | p = validate_switches (p + 1, user, *p == '{'); |
9460 | } |
9461 | |
9462 | static void |
9463 | validate_all_switches (void) |
9464 | { |
9465 | struct compiler *comp; |
9466 | struct spec_list *spec; |
9467 | |
9468 | for (comp = compilers; comp->spec; comp++) |
9469 | validate_switches_from_spec (spec: comp->spec, user: false); |
9470 | |
9471 | /* Look through the linked list of specs read from the specs file. */ |
9472 | for (spec = specs; spec; spec = spec->next) |
9473 | validate_switches_from_spec (spec: *spec->ptr_spec, user: spec->user_p); |
9474 | |
9475 | validate_switches_from_spec (spec: link_command_spec, user: false); |
9476 | } |
9477 | |
9478 | /* Look at the switch-name that comes after START and mark as valid |
9479 | all supplied switches that match it. If BRACED, handle other |
9480 | switches after '|' and '&', and specs after ':' until ';' or '}', |
9481 | going back for more switches after ';'. Without BRACED, handle |
9482 | only one atom. Return a pointer to whatever follows the handled |
9483 | items, after the closing brace if BRACED. */ |
9484 | |
9485 | static const char * |
9486 | validate_switches (const char *start, bool user_spec, bool braced) |
9487 | { |
9488 | const char *p = start; |
9489 | const char *atom; |
9490 | size_t len; |
9491 | int i; |
9492 | bool suffix; |
9493 | bool starred; |
9494 | |
9495 | #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0) |
9496 | |
9497 | next_member: |
9498 | suffix = false; |
9499 | starred = false; |
9500 | |
9501 | SKIP_WHITE (); |
9502 | |
9503 | if (*p == '!') |
9504 | p++; |
9505 | |
9506 | SKIP_WHITE (); |
9507 | if (*p == '.' || *p == ',') |
9508 | suffix = true, p++; |
9509 | |
9510 | atom = p; |
9511 | while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '=' |
9512 | || *p == ',' || *p == '.' || *p == '@') |
9513 | p++; |
9514 | len = p - atom; |
9515 | |
9516 | if (*p == '*') |
9517 | starred = true, p++; |
9518 | |
9519 | SKIP_WHITE (); |
9520 | |
9521 | if (!suffix) |
9522 | { |
9523 | /* Mark all matching switches as valid. */ |
9524 | for (i = 0; i < n_switches; i++) |
9525 | if (!strncmp (s1: switches[i].part1, s2: atom, n: len) |
9526 | && (starred || switches[i].part1[len] == '\0') |
9527 | && (switches[i].known || user_spec)) |
9528 | switches[i].validated = true; |
9529 | } |
9530 | |
9531 | if (!braced) |
9532 | return p; |
9533 | |
9534 | if (*p) p++; |
9535 | if (*p && (p[-1] == '|' || p[-1] == '&')) |
9536 | goto next_member; |
9537 | |
9538 | if (*p && p[-1] == ':') |
9539 | { |
9540 | while (*p && *p != ';' && *p != '}') |
9541 | { |
9542 | if (*p == '%') |
9543 | { |
9544 | p++; |
9545 | if (*p == '{' || *p == '<') |
9546 | p = validate_switches (start: p+1, user_spec, braced: *p == '{'); |
9547 | else if (p[0] == 'W' && p[1] == '{') |
9548 | p = validate_switches (start: p+2, user_spec, braced: true); |
9549 | else if (p[0] == '@' && p[1] == '{') |
9550 | p = validate_switches (start: p+2, user_spec, braced: true); |
9551 | } |
9552 | else |
9553 | p++; |
9554 | } |
9555 | |
9556 | if (*p) p++; |
9557 | if (*p && p[-1] == ';') |
9558 | goto next_member; |
9559 | } |
9560 | |
9561 | return p; |
9562 | #undef SKIP_WHITE |
9563 | } |
9564 | |
9565 | struct mdswitchstr |
9566 | { |
9567 | const char *str; |
9568 | int len; |
9569 | }; |
9570 | |
9571 | static struct mdswitchstr *mdswitches; |
9572 | static int n_mdswitches; |
9573 | |
9574 | /* Check whether a particular argument was used. The first time we |
9575 | canonicalize the switches to keep only the ones we care about. */ |
9576 | |
9577 | struct used_arg_t |
9578 | { |
9579 | public: |
9580 | int operator () (const char *p, int len); |
9581 | void finalize (); |
9582 | |
9583 | private: |
9584 | struct mswitchstr |
9585 | { |
9586 | const char *str; |
9587 | const char *replace; |
9588 | int len; |
9589 | int rep_len; |
9590 | }; |
9591 | |
9592 | mswitchstr *mswitches; |
9593 | int n_mswitches; |
9594 | |
9595 | }; |
9596 | |
9597 | used_arg_t used_arg; |
9598 | |
9599 | int |
9600 | used_arg_t::operator () (const char *p, int len) |
9601 | { |
9602 | int i, j; |
9603 | |
9604 | if (!mswitches) |
9605 | { |
9606 | struct mswitchstr *matches; |
9607 | const char *q; |
9608 | int cnt = 0; |
9609 | |
9610 | /* Break multilib_matches into the component strings of string |
9611 | and replacement string. */ |
9612 | for (q = multilib_matches; *q != '\0'; q++) |
9613 | if (*q == ';') |
9614 | cnt++; |
9615 | |
9616 | matches |
9617 | = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt); |
9618 | i = 0; |
9619 | q = multilib_matches; |
9620 | while (*q != '\0') |
9621 | { |
9622 | matches[i].str = q; |
9623 | while (*q != ' ') |
9624 | { |
9625 | if (*q == '\0') |
9626 | { |
9627 | invalid_matches: |
9628 | fatal_error (input_location, "multilib spec %qs is invalid", |
9629 | multilib_matches); |
9630 | } |
9631 | q++; |
9632 | } |
9633 | matches[i].len = q - matches[i].str; |
9634 | |
9635 | matches[i].replace = ++q; |
9636 | while (*q != ';' && *q != '\0') |
9637 | { |
9638 | if (*q == ' ') |
9639 | goto invalid_matches; |
9640 | q++; |
9641 | } |
9642 | matches[i].rep_len = q - matches[i].replace; |
9643 | i++; |
9644 | if (*q == ';') |
9645 | q++; |
9646 | } |
9647 | |
9648 | /* Now build a list of the replacement string for switches that we care |
9649 | about. Make sure we allocate at least one entry. This prevents |
9650 | xmalloc from calling fatal, and prevents us from re-executing this |
9651 | block of code. */ |
9652 | mswitches |
9653 | = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1)); |
9654 | for (i = 0; i < n_switches; i++) |
9655 | if ((switches[i].live_cond & SWITCH_IGNORE) == 0) |
9656 | { |
9657 | int xlen = strlen (s: switches[i].part1); |
9658 | for (j = 0; j < cnt; j++) |
9659 | if (xlen == matches[j].len |
9660 | && ! strncmp (s1: switches[i].part1, s2: matches[j].str, n: xlen)) |
9661 | { |
9662 | mswitches[n_mswitches].str = matches[j].replace; |
9663 | mswitches[n_mswitches].len = matches[j].rep_len; |
9664 | mswitches[n_mswitches].replace = (char *) 0; |
9665 | mswitches[n_mswitches].rep_len = 0; |
9666 | n_mswitches++; |
9667 | break; |
9668 | } |
9669 | } |
9670 | |
9671 | /* Add MULTILIB_DEFAULTS switches too, as long as they were not present |
9672 | on the command line nor any options mutually incompatible with |
9673 | them. */ |
9674 | for (i = 0; i < n_mdswitches; i++) |
9675 | { |
9676 | const char *r; |
9677 | |
9678 | for (q = multilib_options; *q != '\0'; *q && q++) |
9679 | { |
9680 | while (*q == ' ') |
9681 | q++; |
9682 | |
9683 | r = q; |
9684 | while (strncmp (s1: q, s2: mdswitches[i].str, n: mdswitches[i].len) != 0 |
9685 | || strchr (s: " /", c: q[mdswitches[i].len]) == NULL) |
9686 | { |
9687 | while (*q != ' ' && *q != '/' && *q != '\0') |
9688 | q++; |
9689 | if (*q != '/') |
9690 | break; |
9691 | q++; |
9692 | } |
9693 | |
9694 | if (*q != ' ' && *q != '\0') |
9695 | { |
9696 | while (*r != ' ' && *r != '\0') |
9697 | { |
9698 | q = r; |
9699 | while (*q != ' ' && *q != '/' && *q != '\0') |
9700 | q++; |
9701 | |
9702 | if (used_arg (r, q - r)) |
9703 | break; |
9704 | |
9705 | if (*q != '/') |
9706 | { |
9707 | mswitches[n_mswitches].str = mdswitches[i].str; |
9708 | mswitches[n_mswitches].len = mdswitches[i].len; |
9709 | mswitches[n_mswitches].replace = (char *) 0; |
9710 | mswitches[n_mswitches].rep_len = 0; |
9711 | n_mswitches++; |
9712 | break; |
9713 | } |
9714 | |
9715 | r = q + 1; |
9716 | } |
9717 | break; |
9718 | } |
9719 | } |
9720 | } |
9721 | } |
9722 | |
9723 | for (i = 0; i < n_mswitches; i++) |
9724 | if (len == mswitches[i].len && ! strncmp (s1: p, s2: mswitches[i].str, n: len)) |
9725 | return 1; |
9726 | |
9727 | return 0; |
9728 | } |
9729 | |
9730 | void used_arg_t::finalize () |
9731 | { |
9732 | XDELETEVEC (mswitches); |
9733 | mswitches = NULL; |
9734 | n_mswitches = 0; |
9735 | } |
9736 | |
9737 | |
9738 | static int |
9739 | default_arg (const char *p, int len) |
9740 | { |
9741 | int i; |
9742 | |
9743 | for (i = 0; i < n_mdswitches; i++) |
9744 | if (len == mdswitches[i].len && ! strncmp (s1: p, s2: mdswitches[i].str, n: len)) |
9745 | return 1; |
9746 | |
9747 | return 0; |
9748 | } |
9749 | |
9750 | /* Use multilib_dir as key to find corresponding multilib_os_dir and |
9751 | multiarch_dir. */ |
9752 | |
9753 | static void |
9754 | find_multilib_os_dir_by_multilib_dir (const char *multilib_dir, |
9755 | const char **p_multilib_os_dir, |
9756 | const char **p_multiarch_dir) |
9757 | { |
9758 | const char *p = multilib_select; |
9759 | unsigned int this_path_len; |
9760 | const char *this_path; |
9761 | int ok = 0; |
9762 | |
9763 | while (*p != '\0') |
9764 | { |
9765 | /* Ignore newlines. */ |
9766 | if (*p == '\n') |
9767 | { |
9768 | ++p; |
9769 | continue; |
9770 | } |
9771 | |
9772 | /* Get the initial path. */ |
9773 | this_path = p; |
9774 | while (*p != ' ') |
9775 | { |
9776 | if (*p == '\0') |
9777 | { |
9778 | fatal_error (input_location, "multilib select %qs %qs is invalid", |
9779 | multilib_select, multilib_reuse); |
9780 | } |
9781 | ++p; |
9782 | } |
9783 | this_path_len = p - this_path; |
9784 | |
9785 | ok = 0; |
9786 | |
9787 | /* Skip any arguments, we don't care at this stage. */ |
9788 | while (*++p != ';'); |
9789 | |
9790 | if (this_path_len != 1 |
9791 | || this_path[0] != '.') |
9792 | { |
9793 | char *new_multilib_dir = XNEWVEC (char, this_path_len + 1); |
9794 | char *q; |
9795 | |
9796 | strncpy (dest: new_multilib_dir, src: this_path, n: this_path_len); |
9797 | new_multilib_dir[this_path_len] = '\0'; |
9798 | q = strchr (s: new_multilib_dir, c: ':'); |
9799 | if (q != NULL) |
9800 | *q = '\0'; |
9801 | |
9802 | if (strcmp (s1: new_multilib_dir, s2: multilib_dir) == 0) |
9803 | ok = 1; |
9804 | } |
9805 | |
9806 | /* Found matched multilib_dir, update multilib_os_dir and |
9807 | multiarch_dir. */ |
9808 | if (ok) |
9809 | { |
9810 | const char *q = this_path, *end = this_path + this_path_len; |
9811 | |
9812 | while (q < end && *q != ':') |
9813 | q++; |
9814 | if (q < end) |
9815 | { |
9816 | const char *q2 = q + 1, *ml_end = end; |
9817 | char *new_multilib_os_dir; |
9818 | |
9819 | while (q2 < end && *q2 != ':') |
9820 | q2++; |
9821 | if (*q2 == ':') |
9822 | ml_end = q2; |
9823 | if (ml_end - q == 1) |
9824 | *p_multilib_os_dir = xstrdup ("."); |
9825 | else |
9826 | { |
9827 | new_multilib_os_dir = XNEWVEC (char, ml_end - q); |
9828 | memcpy (dest: new_multilib_os_dir, src: q + 1, n: ml_end - q - 1); |
9829 | new_multilib_os_dir[ml_end - q - 1] = '\0'; |
9830 | *p_multilib_os_dir = new_multilib_os_dir; |
9831 | } |
9832 | |
9833 | if (q2 < end && *q2 == ':') |
9834 | { |
9835 | char *new_multiarch_dir = XNEWVEC (char, end - q2); |
9836 | memcpy (dest: new_multiarch_dir, src: q2 + 1, n: end - q2 - 1); |
9837 | new_multiarch_dir[end - q2 - 1] = '\0'; |
9838 | *p_multiarch_dir = new_multiarch_dir; |
9839 | } |
9840 | break; |
9841 | } |
9842 | } |
9843 | ++p; |
9844 | } |
9845 | } |
9846 | |
9847 | /* Work out the subdirectory to use based on the options. The format of |
9848 | multilib_select is a list of elements. Each element is a subdirectory |
9849 | name followed by a list of options followed by a semicolon. The format |
9850 | of multilib_exclusions is the same, but without the preceding |
9851 | directory. First gcc will check the exclusions, if none of the options |
9852 | beginning with an exclamation point are present, and all of the other |
9853 | options are present, then we will ignore this completely. Passing |
9854 | that, gcc will consider each multilib_select in turn using the same |
9855 | rules for matching the options. If a match is found, that subdirectory |
9856 | will be used. |
9857 | A subdirectory name is optionally followed by a colon and the corresponding |
9858 | multiarch name. */ |
9859 | |
9860 | static void |
9861 | set_multilib_dir (void) |
9862 | { |
9863 | const char *p; |
9864 | unsigned int this_path_len; |
9865 | const char *this_path, *this_arg; |
9866 | const char *start, *end; |
9867 | int not_arg; |
9868 | int ok, ndfltok, first; |
9869 | |
9870 | n_mdswitches = 0; |
9871 | start = multilib_defaults; |
9872 | while (*start == ' ' || *start == '\t') |
9873 | start++; |
9874 | while (*start != '\0') |
9875 | { |
9876 | n_mdswitches++; |
9877 | while (*start != ' ' && *start != '\t' && *start != '\0') |
9878 | start++; |
9879 | while (*start == ' ' || *start == '\t') |
9880 | start++; |
9881 | } |
9882 | |
9883 | if (n_mdswitches) |
9884 | { |
9885 | int i = 0; |
9886 | |
9887 | mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches); |
9888 | for (start = multilib_defaults; *start != '\0'; start = end + 1) |
9889 | { |
9890 | while (*start == ' ' || *start == '\t') |
9891 | start++; |
9892 | |
9893 | if (*start == '\0') |
9894 | break; |
9895 | |
9896 | for (end = start + 1; |
9897 | *end != ' ' && *end != '\t' && *end != '\0'; end++) |
9898 | ; |
9899 | |
9900 | obstack_grow (&multilib_obstack, start, end - start); |
9901 | obstack_1grow (&multilib_obstack, 0); |
9902 | mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *); |
9903 | mdswitches[i++].len = end - start; |
9904 | |
9905 | if (*end == '\0') |
9906 | break; |
9907 | } |
9908 | } |
9909 | |
9910 | p = multilib_exclusions; |
9911 | while (*p != '\0') |
9912 | { |
9913 | /* Ignore newlines. */ |
9914 | if (*p == '\n') |
9915 | { |
9916 | ++p; |
9917 | continue; |
9918 | } |
9919 | |
9920 | /* Check the arguments. */ |
9921 | ok = 1; |
9922 | while (*p != ';') |
9923 | { |
9924 | if (*p == '\0') |
9925 | { |
9926 | invalid_exclusions: |
9927 | fatal_error (input_location, "multilib exclusions %qs is invalid", |
9928 | multilib_exclusions); |
9929 | } |
9930 | |
9931 | if (! ok) |
9932 | { |
9933 | ++p; |
9934 | continue; |
9935 | } |
9936 | |
9937 | this_arg = p; |
9938 | while (*p != ' ' && *p != ';') |
9939 | { |
9940 | if (*p == '\0') |
9941 | goto invalid_exclusions; |
9942 | ++p; |
9943 | } |
9944 | |
9945 | if (*this_arg != '!') |
9946 | not_arg = 0; |
9947 | else |
9948 | { |
9949 | not_arg = 1; |
9950 | ++this_arg; |
9951 | } |
9952 | |
9953 | ok = used_arg (this_arg, p - this_arg); |
9954 | if (not_arg) |
9955 | ok = ! ok; |
9956 | |
9957 | if (*p == ' ') |
9958 | ++p; |
9959 | } |
9960 | |
9961 | if (ok) |
9962 | return; |
9963 | |
9964 | ++p; |
9965 | } |
9966 | |
9967 | first = 1; |
9968 | p = multilib_select; |
9969 | |
9970 | /* Append multilib reuse rules if any. With those rules, we can reuse |
9971 | one multilib for certain different options sets. */ |
9972 | if (strlen (s: multilib_reuse) > 0) |
9973 | p = concat (p, multilib_reuse, NULL); |
9974 | |
9975 | while (*p != '\0') |
9976 | { |
9977 | /* Ignore newlines. */ |
9978 | if (*p == '\n') |
9979 | { |
9980 | ++p; |
9981 | continue; |
9982 | } |
9983 | |
9984 | /* Get the initial path. */ |
9985 | this_path = p; |
9986 | while (*p != ' ') |
9987 | { |
9988 | if (*p == '\0') |
9989 | { |
9990 | invalid_select: |
9991 | fatal_error (input_location, "multilib select %qs %qs is invalid", |
9992 | multilib_select, multilib_reuse); |
9993 | } |
9994 | ++p; |
9995 | } |
9996 | this_path_len = p - this_path; |
9997 | |
9998 | /* Check the arguments. */ |
9999 | ok = 1; |
10000 | ndfltok = 1; |
10001 | ++p; |
10002 | while (*p != ';') |
10003 | { |
10004 | if (*p == '\0') |
10005 | goto invalid_select; |
10006 | |
10007 | if (! ok) |
10008 | { |
10009 | ++p; |
10010 | continue; |
10011 | } |
10012 | |
10013 | this_arg = p; |
10014 | while (*p != ' ' && *p != ';') |
10015 | { |
10016 | if (*p == '\0') |
10017 | goto invalid_select; |
10018 | ++p; |
10019 | } |
10020 | |
10021 | if (*this_arg != '!') |
10022 | not_arg = 0; |
10023 | else |
10024 | { |
10025 | not_arg = 1; |
10026 | ++this_arg; |
10027 | } |
10028 | |
10029 | /* If this is a default argument, we can just ignore it. |
10030 | This is true even if this_arg begins with '!'. Beginning |
10031 | with '!' does not mean that this argument is necessarily |
10032 | inappropriate for this library: it merely means that |
10033 | there is a more specific library which uses this |
10034 | argument. If this argument is a default, we need not |
10035 | consider that more specific library. */ |
10036 | ok = used_arg (this_arg, p - this_arg); |
10037 | if (not_arg) |
10038 | ok = ! ok; |
10039 | |
10040 | if (! ok) |
10041 | ndfltok = 0; |
10042 | |
10043 | if (default_arg (p: this_arg, len: p - this_arg)) |
10044 | ok = 1; |
10045 | |
10046 | if (*p == ' ') |
10047 | ++p; |
10048 | } |
10049 | |
10050 | if (ok && first) |
10051 | { |
10052 | if (this_path_len != 1 |
10053 | || this_path[0] != '.') |
10054 | { |
10055 | char *new_multilib_dir = XNEWVEC (char, this_path_len + 1); |
10056 | char *q; |
10057 | |
10058 | strncpy (dest: new_multilib_dir, src: this_path, n: this_path_len); |
10059 | new_multilib_dir[this_path_len] = '\0'; |
10060 | q = strchr (s: new_multilib_dir, c: ':'); |
10061 | if (q != NULL) |
10062 | *q = '\0'; |
10063 | multilib_dir = new_multilib_dir; |
10064 | } |
10065 | first = 0; |
10066 | } |
10067 | |
10068 | if (ndfltok) |
10069 | { |
10070 | const char *q = this_path, *end = this_path + this_path_len; |
10071 | |
10072 | while (q < end && *q != ':') |
10073 | q++; |
10074 | if (q < end) |
10075 | { |
10076 | const char *q2 = q + 1, *ml_end = end; |
10077 | char *new_multilib_os_dir; |
10078 | |
10079 | while (q2 < end && *q2 != ':') |
10080 | q2++; |
10081 | if (*q2 == ':') |
10082 | ml_end = q2; |
10083 | if (ml_end - q == 1) |
10084 | multilib_os_dir = xstrdup ("."); |
10085 | else |
10086 | { |
10087 | new_multilib_os_dir = XNEWVEC (char, ml_end - q); |
10088 | memcpy (dest: new_multilib_os_dir, src: q + 1, n: ml_end - q - 1); |
10089 | new_multilib_os_dir[ml_end - q - 1] = '\0'; |
10090 | multilib_os_dir = new_multilib_os_dir; |
10091 | } |
10092 | |
10093 | if (q2 < end && *q2 == ':') |
10094 | { |
10095 | char *new_multiarch_dir = XNEWVEC (char, end - q2); |
10096 | memcpy (dest: new_multiarch_dir, src: q2 + 1, n: end - q2 - 1); |
10097 | new_multiarch_dir[end - q2 - 1] = '\0'; |
10098 | multiarch_dir = new_multiarch_dir; |
10099 | } |
10100 | break; |
10101 | } |
10102 | } |
10103 | |
10104 | ++p; |
10105 | } |
10106 | |
10107 | multilib_dir = |
10108 | targetm_common.compute_multilib ( |
10109 | switches, |
10110 | n_switches, |
10111 | multilib_dir, |
10112 | multilib_defaults, |
10113 | multilib_select, |
10114 | multilib_matches, |
10115 | multilib_exclusions, |
10116 | multilib_reuse); |
10117 | |
10118 | if (multilib_dir == NULL && multilib_os_dir != NULL |
10119 | && strcmp (s1: multilib_os_dir, s2: ".") == 0) |
10120 | { |
10121 | free (CONST_CAST (char *, multilib_os_dir)); |
10122 | multilib_os_dir = NULL; |
10123 | } |
10124 | else if (multilib_dir != NULL && multilib_os_dir == NULL) |
10125 | { |
10126 | /* Give second chance to search matched multilib_os_dir again by matching |
10127 | the multilib_dir since some target may use TARGET_COMPUTE_MULTILIB |
10128 | hook rather than the builtin way. */ |
10129 | find_multilib_os_dir_by_multilib_dir (multilib_dir, p_multilib_os_dir: &multilib_os_dir, |
10130 | p_multiarch_dir: &multiarch_dir); |
10131 | |
10132 | if (multilib_os_dir == NULL) |
10133 | multilib_os_dir = multilib_dir; |
10134 | } |
10135 | } |
10136 | |
10137 | /* Print out the multiple library subdirectory selection |
10138 | information. This prints out a series of lines. Each line looks |
10139 | like SUBDIRECTORY;@OPTION@OPTION, with as many options as is |
10140 | required. Only the desired options are printed out, the negative |
10141 | matches. The options are print without a leading dash. There are |
10142 | no spaces to make it easy to use the information in the shell. |
10143 | Each subdirectory is printed only once. This assumes the ordering |
10144 | generated by the genmultilib script. Also, we leave out ones that match |
10145 | the exclusions. */ |
10146 | |
10147 | static void |
10148 | print_multilib_info (void) |
10149 | { |
10150 | const char *p = multilib_select; |
10151 | const char *last_path = 0, *this_path; |
10152 | int skip; |
10153 | int not_arg; |
10154 | unsigned int last_path_len = 0; |
10155 | |
10156 | while (*p != '\0') |
10157 | { |
10158 | skip = 0; |
10159 | /* Ignore newlines. */ |
10160 | if (*p == '\n') |
10161 | { |
10162 | ++p; |
10163 | continue; |
10164 | } |
10165 | |
10166 | /* Get the initial path. */ |
10167 | this_path = p; |
10168 | while (*p != ' ') |
10169 | { |
10170 | if (*p == '\0') |
10171 | { |
10172 | invalid_select: |
10173 | fatal_error (input_location, |
10174 | "multilib select %qs is invalid", multilib_select); |
10175 | } |
10176 | |
10177 | ++p; |
10178 | } |
10179 | |
10180 | /* When --disable-multilib was used but target defines |
10181 | MULTILIB_OSDIRNAMES, entries starting with .: (and not starting |
10182 | with .:: for multiarch configurations) are there just to find |
10183 | multilib_os_dir, so skip them from output. */ |
10184 | if (this_path[0] == '.' && this_path[1] == ':' && this_path[2] != ':') |
10185 | skip = 1; |
10186 | |
10187 | /* Check for matches with the multilib_exclusions. We don't bother |
10188 | with the '!' in either list. If any of the exclusion rules match |
10189 | all of its options with the select rule, we skip it. */ |
10190 | { |
10191 | const char *e = multilib_exclusions; |
10192 | const char *this_arg; |
10193 | |
10194 | while (*e != '\0') |
10195 | { |
10196 | int m = 1; |
10197 | /* Ignore newlines. */ |
10198 | if (*e == '\n') |
10199 | { |
10200 | ++e; |
10201 | continue; |
10202 | } |
10203 | |
10204 | /* Check the arguments. */ |
10205 | while (*e != ';') |
10206 | { |
10207 | const char *q; |
10208 | int mp = 0; |
10209 | |
10210 | if (*e == '\0') |
10211 | { |
10212 | invalid_exclusion: |
10213 | fatal_error (input_location, |
10214 | "multilib exclusion %qs is invalid", |
10215 | multilib_exclusions); |
10216 | } |
10217 | |
10218 | if (! m) |
10219 | { |
10220 | ++e; |
10221 | continue; |
10222 | } |
10223 | |
10224 | this_arg = e; |
10225 | |
10226 | while (*e != ' ' && *e != ';') |
10227 | { |
10228 | if (*e == '\0') |
10229 | goto invalid_exclusion; |
10230 | ++e; |
10231 | } |
10232 | |
10233 | q = p + 1; |
10234 | while (*q != ';') |
10235 | { |
10236 | const char *arg; |
10237 | int len = e - this_arg; |
10238 | |
10239 | if (*q == '\0') |
10240 | goto invalid_select; |
10241 | |
10242 | arg = q; |
10243 | |
10244 | while (*q != ' ' && *q != ';') |
10245 | { |
10246 | if (*q == '\0') |
10247 | goto invalid_select; |
10248 | ++q; |
10249 | } |
10250 | |
10251 | if (! strncmp (s1: arg, s2: this_arg, |
10252 | n: (len < q - arg) ? q - arg : len) |
10253 | || default_arg (p: this_arg, len: e - this_arg)) |
10254 | { |
10255 | mp = 1; |
10256 | break; |
10257 | } |
10258 | |
10259 | if (*q == ' ') |
10260 | ++q; |
10261 | } |
10262 | |
10263 | if (! mp) |
10264 | m = 0; |
10265 | |
10266 | if (*e == ' ') |
10267 | ++e; |
10268 | } |
10269 | |
10270 | if (m) |
10271 | { |
10272 | skip = 1; |
10273 | break; |
10274 | } |
10275 | |
10276 | if (*e != '\0') |
10277 | ++e; |
10278 | } |
10279 | } |
10280 | |
10281 | if (! skip) |
10282 | { |
10283 | /* If this is a duplicate, skip it. */ |
10284 | skip = (last_path != 0 |
10285 | && (unsigned int) (p - this_path) == last_path_len |
10286 | && ! filename_ncmp (s1: last_path, s2: this_path, n: last_path_len)); |
10287 | |
10288 | last_path = this_path; |
10289 | last_path_len = p - this_path; |
10290 | } |
10291 | |
10292 | /* If all required arguments are default arguments, and no default |
10293 | arguments appear in the ! argument list, then we can skip it. |
10294 | We will already have printed a directory identical to this one |
10295 | which does not require that default argument. */ |
10296 | if (! skip) |
10297 | { |
10298 | const char *q; |
10299 | bool default_arg_ok = false; |
10300 | |
10301 | q = p + 1; |
10302 | while (*q != ';') |
10303 | { |
10304 | const char *arg; |
10305 | |
10306 | if (*q == '\0') |
10307 | goto invalid_select; |
10308 | |
10309 | if (*q == '!') |
10310 | { |
10311 | not_arg = 1; |
10312 | q++; |
10313 | } |
10314 | else |
10315 | not_arg = 0; |
10316 | arg = q; |
10317 | |
10318 | while (*q != ' ' && *q != ';') |
10319 | { |
10320 | if (*q == '\0') |
10321 | goto invalid_select; |
10322 | ++q; |
10323 | } |
10324 | |
10325 | if (default_arg (p: arg, len: q - arg)) |
10326 | { |
10327 | /* Stop checking if any default arguments appeared in not |
10328 | list. */ |
10329 | if (not_arg) |
10330 | { |
10331 | default_arg_ok = false; |
10332 | break; |
10333 | } |
10334 | |
10335 | default_arg_ok = true; |
10336 | } |
10337 | else if (!not_arg) |
10338 | { |
10339 | /* Stop checking if any required argument is not provided by |
10340 | default arguments. */ |
10341 | default_arg_ok = false; |
10342 | break; |
10343 | } |
10344 | |
10345 | if (*q == ' ') |
10346 | ++q; |
10347 | } |
10348 | |
10349 | /* Make sure all default argument is OK for this multi-lib set. */ |
10350 | if (default_arg_ok) |
10351 | skip = 1; |
10352 | else |
10353 | skip = 0; |
10354 | } |
10355 | |
10356 | if (! skip) |
10357 | { |
10358 | const char *p1; |
10359 | |
10360 | for (p1 = last_path; p1 < p && *p1 != ':'; p1++) |
10361 | putchar (c: *p1); |
10362 | putchar (c: ';'); |
10363 | } |
10364 | |
10365 | ++p; |
10366 | while (*p != ';') |
10367 | { |
10368 | int use_arg; |
10369 | |
10370 | if (*p == '\0') |
10371 | goto invalid_select; |
10372 | |
10373 | if (skip) |
10374 | { |
10375 | ++p; |
10376 | continue; |
10377 | } |
10378 | |
10379 | use_arg = *p != '!'; |
10380 | |
10381 | if (use_arg) |
10382 | putchar (c: '@'); |
10383 | |
10384 | while (*p != ' ' && *p != ';') |
10385 | { |
10386 | if (*p == '\0') |
10387 | goto invalid_select; |
10388 | if (use_arg) |
10389 | putchar (c: *p); |
10390 | ++p; |
10391 | } |
10392 | |
10393 | if (*p == ' ') |
10394 | ++p; |
10395 | } |
10396 | |
10397 | if (! skip) |
10398 | { |
10399 | /* If there are extra options, print them now. */ |
10400 | if (multilib_extra && *multilib_extra) |
10401 | { |
10402 | int print_at = true; |
10403 | const char *q; |
10404 | |
10405 | for (q = multilib_extra; *q != '\0'; q++) |
10406 | { |
10407 | if (*q == ' ') |
10408 | print_at = true; |
10409 | else |
10410 | { |
10411 | if (print_at) |
10412 | putchar (c: '@'); |
10413 | putchar (c: *q); |
10414 | print_at = false; |
10415 | } |
10416 | } |
10417 | } |
10418 | |
10419 | putchar (c: '\n'); |
10420 | } |
10421 | |
10422 | ++p; |
10423 | } |
10424 | } |
10425 | |
10426 | /* getenv built-in spec function. |
10427 | |
10428 | Returns the value of the environment variable given by its first argument, |
10429 | concatenated with the second argument. If the variable is not defined, a |
10430 | fatal error is issued unless such undefs are internally allowed, in which |
10431 | case the variable name prefixed by a '/' is used as the variable value. |
10432 | |
10433 | The leading '/' allows using the result at a spot where a full path would |
10434 | normally be expected and when the actual value doesn't really matter since |
10435 | undef vars are allowed. */ |
10436 | |
10437 | static const char * |
10438 | getenv_spec_function (int argc, const char **argv) |
10439 | { |
10440 | const char *value; |
10441 | const char *varname; |
10442 | |
10443 | char *result; |
10444 | char *ptr; |
10445 | size_t len; |
10446 | |
10447 | if (argc != 2) |
10448 | return NULL; |
10449 | |
10450 | varname = argv[0]; |
10451 | value = env.get (name: varname); |
10452 | |
10453 | /* If the variable isn't defined and this is allowed, craft our expected |
10454 | return value. Assume variable names used in specs strings don't contain |
10455 | any active spec character so don't need escaping. */ |
10456 | if (!value && spec_undefvar_allowed) |
10457 | { |
10458 | result = XNEWVAR (char, strlen(varname) + 2); |
10459 | sprintf (s: result, format: "/%s", varname); |
10460 | return result; |
10461 | } |
10462 | |
10463 | if (!value) |
10464 | fatal_error (input_location, |
10465 | "environment variable %qs not defined", varname); |
10466 | |
10467 | /* We have to escape every character of the environment variable so |
10468 | they are not interpreted as active spec characters. A |
10469 | particularly painful case is when we are reading a variable |
10470 | holding a windows path complete with \ separators. */ |
10471 | len = strlen (s: value) * 2 + strlen (s: argv[1]) + 1; |
10472 | result = XNEWVAR (char, len); |
10473 | for (ptr = result; *value; ptr += 2) |
10474 | { |
10475 | ptr[0] = '\\'; |
10476 | ptr[1] = *value++; |
10477 | } |
10478 | |
10479 | strcpy (dest: ptr, src: argv[1]); |
10480 | |
10481 | return result; |
10482 | } |
10483 | |
10484 | /* if-exists built-in spec function. |
10485 | |
10486 | Checks to see if the file specified by the absolute pathname in |
10487 | ARGS exists. Returns that pathname if found. |
10488 | |
10489 | The usual use for this function is to check for a library file |
10490 | (whose name has been expanded with %s). */ |
10491 | |
10492 | static const char * |
10493 | if_exists_spec_function (int argc, const char **argv) |
10494 | { |
10495 | /* Must have only one argument. */ |
10496 | if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (name: argv[0], R_OK)) |
10497 | return argv[0]; |
10498 | |
10499 | return NULL; |
10500 | } |
10501 | |
10502 | /* if-exists-else built-in spec function. |
10503 | |
10504 | This is like if-exists, but takes an additional argument which |
10505 | is returned if the first argument does not exist. */ |
10506 | |
10507 | static const char * |
10508 | if_exists_else_spec_function (int argc, const char **argv) |
10509 | { |
10510 | /* Must have exactly two arguments. */ |
10511 | if (argc != 2) |
10512 | return NULL; |
10513 | |
10514 | if (IS_ABSOLUTE_PATH (argv[0]) && ! access (name: argv[0], R_OK)) |
10515 | return argv[0]; |
10516 | |
10517 | return argv[1]; |
10518 | } |
10519 | |
10520 | /* if-exists-then-else built-in spec function. |
10521 | |
10522 | Checks to see if the file specified by the absolute pathname in |
10523 | the first arg exists. Returns the second arg if so, otherwise returns |
10524 | the third arg if it is present. */ |
10525 | |
10526 | static const char * |
10527 | if_exists_then_else_spec_function (int argc, const char **argv) |
10528 | { |
10529 | |
10530 | /* Must have two or three arguments. */ |
10531 | if (argc != 2 && argc != 3) |
10532 | return NULL; |
10533 | |
10534 | if (IS_ABSOLUTE_PATH (argv[0]) && ! access (name: argv[0], R_OK)) |
10535 | return argv[1]; |
10536 | |
10537 | if (argc == 3) |
10538 | return argv[2]; |
10539 | |
10540 | return NULL; |
10541 | } |
10542 | |
10543 | /* sanitize built-in spec function. |
10544 | |
10545 | This returns non-NULL, if sanitizing address, thread or |
10546 | any of the undefined behavior sanitizers. */ |
10547 | |
10548 | static const char * |
10549 | sanitize_spec_function (int argc, const char **argv) |
10550 | { |
10551 | if (argc != 1) |
10552 | return NULL; |
10553 | |
10554 | if (strcmp (s1: argv[0], s2: "address") == 0) |
10555 | return (flag_sanitize & SANITIZE_USER_ADDRESS) ? "": NULL; |
10556 | if (strcmp (s1: argv[0], s2: "hwaddress") == 0) |
10557 | return (flag_sanitize & SANITIZE_USER_HWADDRESS) ? "": NULL; |
10558 | if (strcmp (s1: argv[0], s2: "kernel-address") == 0) |
10559 | return (flag_sanitize & SANITIZE_KERNEL_ADDRESS) ? "": NULL; |
10560 | if (strcmp (s1: argv[0], s2: "kernel-hwaddress") == 0) |
10561 | return (flag_sanitize & SANITIZE_KERNEL_HWADDRESS) ? "": NULL; |
10562 | if (strcmp (s1: argv[0], s2: "thread") == 0) |
10563 | return (flag_sanitize & SANITIZE_THREAD) ? "": NULL; |
10564 | if (strcmp (s1: argv[0], s2: "undefined") == 0) |
10565 | return ((flag_sanitize |
10566 | & ~flag_sanitize_trap |
10567 | & (SANITIZE_UNDEFINED | SANITIZE_UNDEFINED_NONDEFAULT))) |
10568 | ? "": NULL; |
10569 | if (strcmp (s1: argv[0], s2: "leak") == 0) |
10570 | return ((flag_sanitize |
10571 | & (SANITIZE_ADDRESS | SANITIZE_LEAK | SANITIZE_THREAD)) |
10572 | == SANITIZE_LEAK) ? "": NULL; |
10573 | return NULL; |
10574 | } |
10575 | |
10576 | /* replace-outfile built-in spec function. |
10577 | |
10578 | This looks for the first argument in the outfiles array's name and |
10579 | replaces it with the second argument. */ |
10580 | |
10581 | static const char * |
10582 | replace_outfile_spec_function (int argc, const char **argv) |
10583 | { |
10584 | int i; |
10585 | /* Must have exactly two arguments. */ |
10586 | if (argc != 2) |
10587 | abort (); |
10588 | |
10589 | for (i = 0; i < n_infiles; i++) |
10590 | { |
10591 | if (outfiles[i] && !filename_cmp (s1: outfiles[i], s2: argv[0])) |
10592 | outfiles[i] = xstrdup (argv[1]); |
10593 | } |
10594 | return NULL; |
10595 | } |
10596 | |
10597 | /* remove-outfile built-in spec function. |
10598 | * |
10599 | * This looks for the first argument in the outfiles array's name and |
10600 | * removes it. */ |
10601 | |
10602 | static const char * |
10603 | remove_outfile_spec_function (int argc, const char **argv) |
10604 | { |
10605 | int i; |
10606 | /* Must have exactly one argument. */ |
10607 | if (argc != 1) |
10608 | abort (); |
10609 | |
10610 | for (i = 0; i < n_infiles; i++) |
10611 | { |
10612 | if (outfiles[i] && !filename_cmp (s1: outfiles[i], s2: argv[0])) |
10613 | outfiles[i] = NULL; |
10614 | } |
10615 | return NULL; |
10616 | } |
10617 | |
10618 | /* Given two version numbers, compares the two numbers. |
10619 | A version number must match the regular expression |
10620 | ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))* |
10621 | */ |
10622 | static int |
10623 | compare_version_strings (const char *v1, const char *v2) |
10624 | { |
10625 | int rresult; |
10626 | regex_t r; |
10627 | |
10628 | if (regcomp (preg: &r, pattern: "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$", |
10629 | REG_EXTENDED | REG_NOSUB) != 0) |
10630 | abort (); |
10631 | rresult = regexec (preg: &r, string: v1, nmatch: 0, NULL, eflags: 0); |
10632 | if (rresult == REG_NOMATCH) |
10633 | fatal_error (input_location, "invalid version number %qs", v1); |
10634 | else if (rresult != 0) |
10635 | abort (); |
10636 | rresult = regexec (preg: &r, string: v2, nmatch: 0, NULL, eflags: 0); |
10637 | if (rresult == REG_NOMATCH) |
10638 | fatal_error (input_location, "invalid version number %qs", v2); |
10639 | else if (rresult != 0) |
10640 | abort (); |
10641 | |
10642 | return strverscmp (s1: v1, s2: v2); |
10643 | } |
10644 | |
10645 | |
10646 | /* version_compare built-in spec function. |
10647 | |
10648 | This takes an argument of the following form: |
10649 | |
10650 | <comparison-op> <arg1> [<arg2>] <switch> <result> |
10651 | |
10652 | and produces "result" if the comparison evaluates to true, |
10653 | and nothing if it doesn't. |
10654 | |
10655 | The supported <comparison-op> values are: |
10656 | |
10657 | >= true if switch is a later (or same) version than arg1 |
10658 | !> opposite of >= |
10659 | < true if switch is an earlier version than arg1 |
10660 | !< opposite of < |
10661 | >< true if switch is arg1 or later, and earlier than arg2 |
10662 | <> true if switch is earlier than arg1 or is arg2 or later |
10663 | |
10664 | If the switch is not present, the condition is false unless |
10665 | the first character of the <comparison-op> is '!'. |
10666 | |
10667 | For example, |
10668 | %:version-compare(>= 10.3 mmacosx-version-min= -lmx) |
10669 | adds -lmx if -mmacosx-version-min=10.3.9 was passed. */ |
10670 | |
10671 | static const char * |
10672 | version_compare_spec_function (int argc, const char **argv) |
10673 | { |
10674 | int comp1, comp2; |
10675 | size_t switch_len; |
10676 | const char *switch_value = NULL; |
10677 | int nargs = 1, i; |
10678 | bool result; |
10679 | |
10680 | if (argc < 3) |
10681 | fatal_error (input_location, "too few arguments to %%:version-compare"); |
10682 | if (argv[0][0] == '\0') |
10683 | abort (); |
10684 | if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!') |
10685 | nargs = 2; |
10686 | if (argc != nargs + 3) |
10687 | fatal_error (input_location, "too many arguments to %%:version-compare"); |
10688 | |
10689 | switch_len = strlen (s: argv[nargs + 1]); |
10690 | for (i = 0; i < n_switches; i++) |
10691 | if (!strncmp (s1: switches[i].part1, s2: argv[nargs + 1], n: switch_len) |
10692 | && check_live_switch (switchnum: i, prefix_length: switch_len)) |
10693 | switch_value = switches[i].part1 + switch_len; |
10694 | |
10695 | if (switch_value == NULL) |
10696 | comp1 = comp2 = -1; |
10697 | else |
10698 | { |
10699 | comp1 = compare_version_strings (v1: switch_value, v2: argv[1]); |
10700 | if (nargs == 2) |
10701 | comp2 = compare_version_strings (v1: switch_value, v2: argv[2]); |
10702 | else |
10703 | comp2 = -1; /* This value unused. */ |
10704 | } |
10705 | |
10706 | switch (argv[0][0] << 8 | argv[0][1]) |
10707 | { |
10708 | case '>' << 8 | '=': |
10709 | result = comp1 >= 0; |
10710 | break; |
10711 | case '!' << 8 | '<': |
10712 | result = comp1 >= 0 || switch_value == NULL; |
10713 | break; |
10714 | case '<' << 8: |
10715 | result = comp1 < 0; |
10716 | break; |
10717 | case '!' << 8 | '>': |
10718 | result = comp1 < 0 || switch_value == NULL; |
10719 | break; |
10720 | case '>' << 8 | '<': |
10721 | result = comp1 >= 0 && comp2 < 0; |
10722 | break; |
10723 | case '<' << 8 | '>': |
10724 | result = comp1 < 0 || comp2 >= 0; |
10725 | break; |
10726 | |
10727 | default: |
10728 | fatal_error (input_location, |
10729 | "unknown operator %qs in %%:version-compare", argv[0]); |
10730 | } |
10731 | if (! result) |
10732 | return NULL; |
10733 | |
10734 | return argv[nargs + 2]; |
10735 | } |
10736 | |
10737 | /* %:include builtin spec function. This differs from %include in that it |
10738 | can be nested inside a spec, and thus be conditionalized. It takes |
10739 | one argument, the filename, and looks for it in the startfile path. |
10740 | The result is always NULL, i.e. an empty expansion. */ |
10741 | |
10742 | static const char * |
10743 | include_spec_function (int argc, const char **argv) |
10744 | { |
10745 | char *file; |
10746 | |
10747 | if (argc != 1) |
10748 | abort (); |
10749 | |
10750 | file = find_a_file (pprefix: &startfile_prefixes, name: argv[0], R_OK, do_multi: true); |
10751 | read_specs (filename: file ? file : argv[0], main_p: false, user_p: false); |
10752 | |
10753 | return NULL; |
10754 | } |
10755 | |
10756 | /* %:find-file spec function. This function replaces its argument by |
10757 | the file found through find_file, that is the -print-file-name gcc |
10758 | program option. */ |
10759 | static const char * |
10760 | find_file_spec_function (int argc, const char **argv) |
10761 | { |
10762 | const char *file; |
10763 | |
10764 | if (argc != 1) |
10765 | abort (); |
10766 | |
10767 | file = find_file (name: argv[0]); |
10768 | return file; |
10769 | } |
10770 | |
10771 | |
10772 | /* %:find-plugindir spec function. This function replaces its argument |
10773 | by the -iplugindir=<dir> option. `dir' is found through find_file, that |
10774 | is the -print-file-name gcc program option. */ |
10775 | static const char * |
10776 | find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED) |
10777 | { |
10778 | const char *option; |
10779 | |
10780 | if (argc != 0) |
10781 | abort (); |
10782 | |
10783 | option = concat ("-iplugindir=", find_file (name: "plugin"), NULL); |
10784 | return option; |
10785 | } |
10786 | |
10787 | |
10788 | /* %:print-asm-header spec function. Print a banner to say that the |
10789 | following output is from the assembler. */ |
10790 | |
10791 | static const char * |
10792 | print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED, |
10793 | const char **argv ATTRIBUTE_UNUSED) |
10794 | { |
10795 | printf (_("Assembler options\n=================\n\n")); |
10796 | printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n")); |
10797 | fflush (stdout); |
10798 | return NULL; |
10799 | } |
10800 | |
10801 | /* Get a random number for -frandom-seed */ |
10802 | |
10803 | static unsigned HOST_WIDE_INT |
10804 | get_random_number (void) |
10805 | { |
10806 | unsigned HOST_WIDE_INT ret = 0; |
10807 | int fd; |
10808 | |
10809 | fd = open (file: "/dev/urandom", O_RDONLY); |
10810 | if (fd >= 0) |
10811 | { |
10812 | read (fd: fd, buf: &ret, nbytes: sizeof (HOST_WIDE_INT)); |
10813 | close (fd: fd); |
10814 | if (ret) |
10815 | return ret; |
10816 | } |
10817 | |
10818 | /* Get some more or less random data. */ |
10819 | #ifdef HAVE_GETTIMEOFDAY |
10820 | { |
10821 | struct timeval tv; |
10822 | |
10823 | gettimeofday (tv: &tv, NULL); |
10824 | ret = tv.tv_sec * 1000 + tv.tv_usec / 1000; |
10825 | } |
10826 | #else |
10827 | { |
10828 | time_t now = time (NULL); |
10829 | |
10830 | if (now != (time_t)-1) |
10831 | ret = (unsigned) now; |
10832 | } |
10833 | #endif |
10834 | |
10835 | return ret ^ getpid (); |
10836 | } |
10837 | |
10838 | /* %:compare-debug-dump-opt spec function. Save the last argument, |
10839 | expected to be the last -fdump-final-insns option, or generate a |
10840 | temporary. */ |
10841 | |
10842 | static const char * |
10843 | compare_debug_dump_opt_spec_function (int arg, |
10844 | const char **argv ATTRIBUTE_UNUSED) |
10845 | { |
10846 | char *ret; |
10847 | char *name; |
10848 | int which; |
10849 | static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3]; |
10850 | |
10851 | if (arg != 0) |
10852 | fatal_error (input_location, |
10853 | "too many arguments to %%:compare-debug-dump-opt"); |
10854 | |
10855 | do_spec_2 (spec: "%{fdump-final-insns=*:%*}", NULL); |
10856 | do_spec_1 (spec: " ", inswitch: 0, NULL); |
10857 | |
10858 | if (argbuf.length () > 0 |
10859 | && strcmp (s1: argv[argbuf.length () - 1], s2: ".") != 0) |
10860 | { |
10861 | if (!compare_debug) |
10862 | return NULL; |
10863 | |
10864 | name = xstrdup (argv[argbuf.length () - 1]); |
10865 | ret = NULL; |
10866 | } |
10867 | else |
10868 | { |
10869 | if (argbuf.length () > 0) |
10870 | do_spec_2 (spec: "%B.gkd", NULL); |
10871 | else if (!compare_debug) |
10872 | return NULL; |
10873 | else |
10874 | do_spec_2 (spec: "%{!save-temps*:%g.gkd}%{save-temps*:%B.gkd}", NULL); |
10875 | |
10876 | do_spec_1 (spec: " ", inswitch: 0, NULL); |
10877 | |
10878 | gcc_assert (argbuf.length () > 0); |
10879 | |
10880 | name = xstrdup (argbuf.last ()); |
10881 | |
10882 | char *arg = quote_spec (xstrdup (name)); |
10883 | ret = concat ("-fdump-final-insns=", arg, NULL); |
10884 | free (ptr: arg); |
10885 | } |
10886 | |
10887 | which = compare_debug < 0; |
10888 | debug_check_temp_file[which] = name; |
10889 | |
10890 | if (!which) |
10891 | { |
10892 | unsigned HOST_WIDE_INT value = get_random_number (); |
10893 | |
10894 | sprintf (s: random_seed, HOST_WIDE_INT_PRINT_HEX, value); |
10895 | } |
10896 | |
10897 | if (*random_seed) |
10898 | { |
10899 | char *tmp = ret; |
10900 | ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ", |
10901 | ret, NULL); |
10902 | free (ptr: tmp); |
10903 | } |
10904 | |
10905 | if (which) |
10906 | *random_seed = 0; |
10907 | |
10908 | return ret; |
10909 | } |
10910 | |
10911 | /* %:compare-debug-self-opt spec function. Expands to the options |
10912 | that are to be passed in the second compilation of |
10913 | compare-debug. */ |
10914 | |
10915 | static const char * |
10916 | compare_debug_self_opt_spec_function (int arg, |
10917 | const char **argv ATTRIBUTE_UNUSED) |
10918 | { |
10919 | if (arg != 0) |
10920 | fatal_error (input_location, |
10921 | "too many arguments to %%:compare-debug-self-opt"); |
10922 | |
10923 | if (compare_debug >= 0) |
10924 | return NULL; |
10925 | |
10926 | return concat ("\ |
10927 | %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \ |
10928 | %<fdump-final-insns=* -w -S -o %j \ |
10929 | %{!fcompare-debug-second:-fcompare-debug-second} \ |
10930 | ", compare_debug_opt, NULL); |
10931 | } |
10932 | |
10933 | /* %:pass-through-libs spec function. Finds all -l options and input |
10934 | file names in the lib spec passed to it, and makes a list of them |
10935 | prepended with the plugin option to cause them to be passed through |
10936 | to the final link after all the new object files have been added. */ |
10937 | |
10938 | const char * |
10939 | pass_through_libs_spec_func (int argc, const char **argv) |
10940 | { |
10941 | char *prepended = xstrdup (" "); |
10942 | int n; |
10943 | /* Shlemiel the painter's algorithm. Innately horrible, but at least |
10944 | we know that there will never be more than a handful of strings to |
10945 | concat, and it's only once per run, so it's not worth optimising. */ |
10946 | for (n = 0; n < argc; n++) |
10947 | { |
10948 | char *old = prepended; |
10949 | /* Anything that isn't an option is a full path to an output |
10950 | file; pass it through if it ends in '.a'. Among options, |
10951 | pass only -l. */ |
10952 | if (argv[n][0] == '-' && argv[n][1] == 'l') |
10953 | { |
10954 | const char *lopt = argv[n] + 2; |
10955 | /* Handle both joined and non-joined -l options. If for any |
10956 | reason there's a trailing -l with no joined or following |
10957 | arg just discard it. */ |
10958 | if (!*lopt && ++n >= argc) |
10959 | break; |
10960 | else if (!*lopt) |
10961 | lopt = argv[n]; |
10962 | prepended = concat (prepended, "-plugin-opt=-pass-through=-l", |
10963 | lopt, " ", NULL); |
10964 | } |
10965 | else if (!strcmp (s1: ".a", s2: argv[n] + strlen (s: argv[n]) - 2)) |
10966 | { |
10967 | prepended = concat (prepended, "-plugin-opt=-pass-through=", |
10968 | argv[n], " ", NULL); |
10969 | } |
10970 | if (prepended != old) |
10971 | free (ptr: old); |
10972 | } |
10973 | return prepended; |
10974 | } |
10975 | |
10976 | static bool |
10977 | not_actual_file_p (const char *name) |
10978 | { |
10979 | return (strcmp (s1: name, s2: "-") == 0 |
10980 | || strcmp (s1: name, HOST_BIT_BUCKET) == 0); |
10981 | } |
10982 | |
10983 | /* %:dumps spec function. Take an optional argument that overrides |
10984 | the default extension for -dumpbase and -dumpbase-ext. |
10985 | Return -dumpdir, -dumpbase and -dumpbase-ext, if needed. */ |
10986 | const char * |
10987 | dumps_spec_func (int argc, const char **argv ATTRIBUTE_UNUSED) |
10988 | { |
10989 | const char *ext = dumpbase_ext; |
10990 | char *p; |
10991 | |
10992 | char *args[3] = { NULL, NULL, NULL }; |
10993 | int nargs = 0; |
10994 | |
10995 | /* Do not compute a default for -dumpbase-ext when -dumpbase was |
10996 | given explicitly. */ |
10997 | if (dumpbase && *dumpbase && !ext) |
10998 | ext = ""; |
10999 | |
11000 | if (argc == 1) |
11001 | { |
11002 | /* Do not override the explicitly-specified -dumpbase-ext with |
11003 | the specs-provided overrider. */ |
11004 | if (!ext) |
11005 | ext = argv[0]; |
11006 | } |
11007 | else if (argc != 0) |
11008 | fatal_error (input_location, "too many arguments for %%:dumps"); |
11009 | |
11010 | if (dumpdir) |
11011 | { |
11012 | p = quote_spec_arg (xstrdup (dumpdir)); |
11013 | args[nargs++] = concat (" -dumpdir ", p, NULL); |
11014 | free (ptr: p); |
11015 | } |
11016 | |
11017 | if (!ext) |
11018 | ext = input_basename + basename_length; |
11019 | |
11020 | /* Use the precomputed outbase, or compute dumpbase from |
11021 | input_basename, just like %b would. */ |
11022 | char *base; |
11023 | |
11024 | if (dumpbase && *dumpbase) |
11025 | { |
11026 | base = xstrdup (dumpbase); |
11027 | p = base + outbase_length; |
11028 | gcc_checking_assert (strncmp (base, outbase, outbase_length) == 0); |
11029 | gcc_checking_assert (strcmp (p, ext) == 0); |
11030 | } |
11031 | else if (outbase_length) |
11032 | { |
11033 | base = xstrndup (outbase, outbase_length); |
11034 | p = NULL; |
11035 | } |
11036 | else |
11037 | { |
11038 | base = xstrndup (input_basename, suffixed_basename_length); |
11039 | p = base + basename_length; |
11040 | } |
11041 | |
11042 | if (compare_debug < 0 || !p || strcmp (s1: p, s2: ext) != 0) |
11043 | { |
11044 | if (p) |
11045 | *p = '\0'; |
11046 | |
11047 | const char *gk; |
11048 | if (compare_debug < 0) |
11049 | gk = ".gk"; |
11050 | else |
11051 | gk = ""; |
11052 | |
11053 | p = concat (base, gk, ext, NULL); |
11054 | |
11055 | free (ptr: base); |
11056 | base = p; |
11057 | } |
11058 | |
11059 | base = quote_spec_arg (base); |
11060 | args[nargs++] = concat (" -dumpbase ", base, NULL); |
11061 | free (ptr: base); |
11062 | |
11063 | if (*ext) |
11064 | { |
11065 | p = quote_spec_arg (xstrdup (ext)); |
11066 | args[nargs++] = concat (" -dumpbase-ext ", p, NULL); |
11067 | free (ptr: p); |
11068 | } |
11069 | |
11070 | const char *ret = concat (args[0], args[1], args[2], NULL); |
11071 | while (nargs > 0) |
11072 | free (ptr: args[--nargs]); |
11073 | |
11074 | return ret; |
11075 | } |
11076 | |
11077 | /* Returns "" if ARGV[ARGC - 2] is greater than ARGV[ARGC-1]. |
11078 | Otherwise, return NULL. */ |
11079 | |
11080 | static const char * |
11081 | greater_than_spec_func (int argc, const char **argv) |
11082 | { |
11083 | char *converted; |
11084 | |
11085 | if (argc == 1) |
11086 | return NULL; |
11087 | |
11088 | gcc_assert (argc >= 2); |
11089 | |
11090 | long arg = strtol (nptr: argv[argc - 2], endptr: &converted, base: 10); |
11091 | gcc_assert (converted != argv[argc - 2]); |
11092 | |
11093 | long lim = strtol (nptr: argv[argc - 1], endptr: &converted, base: 10); |
11094 | gcc_assert (converted != argv[argc - 1]); |
11095 | |
11096 | if (arg > lim) |
11097 | return ""; |
11098 | |
11099 | return NULL; |
11100 | } |
11101 | |
11102 | /* Returns "" if debug_info_level is greater than ARGV[ARGC-1]. |
11103 | Otherwise, return NULL. */ |
11104 | |
11105 | static const char * |
11106 | debug_level_greater_than_spec_func (int argc, const char **argv) |
11107 | { |
11108 | char *converted; |
11109 | |
11110 | if (argc != 1) |
11111 | fatal_error (input_location, |
11112 | "wrong number of arguments to %%:debug-level-gt"); |
11113 | |
11114 | long arg = strtol (nptr: argv[0], endptr: &converted, base: 10); |
11115 | gcc_assert (converted != argv[0]); |
11116 | |
11117 | if (debug_info_level > arg) |
11118 | return ""; |
11119 | |
11120 | return NULL; |
11121 | } |
11122 | |
11123 | /* Returns "" if dwarf_version is greater than ARGV[ARGC-1]. |
11124 | Otherwise, return NULL. */ |
11125 | |
11126 | static const char * |
11127 | dwarf_version_greater_than_spec_func (int argc, const char **argv) |
11128 | { |
11129 | char *converted; |
11130 | |
11131 | if (argc != 1) |
11132 | fatal_error (input_location, |
11133 | "wrong number of arguments to %%:dwarf-version-gt"); |
11134 | |
11135 | long arg = strtol (nptr: argv[0], endptr: &converted, base: 10); |
11136 | gcc_assert (converted != argv[0]); |
11137 | |
11138 | if (dwarf_version > arg) |
11139 | return ""; |
11140 | |
11141 | return NULL; |
11142 | } |
11143 | |
11144 | static void |
11145 | path_prefix_reset (path_prefix *prefix) |
11146 | { |
11147 | struct prefix_list *iter, *next; |
11148 | iter = prefix->plist; |
11149 | while (iter) |
11150 | { |
11151 | next = iter->next; |
11152 | free (ptr: const_cast <char *> (iter->prefix)); |
11153 | XDELETE (iter); |
11154 | iter = next; |
11155 | } |
11156 | prefix->plist = 0; |
11157 | prefix->max_len = 0; |
11158 | } |
11159 | |
11160 | /* The function takes 3 arguments: OPTION name, file name and location |
11161 | where we search for Fortran modules. |
11162 | When the FILE is found by find_file, return OPTION=path_to_file. */ |
11163 | |
11164 | static const char * |
11165 | find_fortran_preinclude_file (int argc, const char **argv) |
11166 | { |
11167 | char *result = NULL; |
11168 | if (argc != 3) |
11169 | return NULL; |
11170 | |
11171 | struct path_prefix prefixes = { .plist: 0, .max_len: 0, .name: "preinclude"}; |
11172 | |
11173 | /* Search first for 'finclude' folder location for a header file |
11174 | installed by the compiler (similar to omp_lib.h). */ |
11175 | add_prefix (pprefix: &prefixes, prefix: argv[2], NULL, priority: 0, require_machine_suffix: 0, os_multilib: 0); |
11176 | #ifdef TOOL_INCLUDE_DIR |
11177 | /* Then search: <prefix>/<target>/<include>/finclude */ |
11178 | add_prefix (&prefixes, TOOL_INCLUDE_DIR "/finclude/", |
11179 | NULL, 0, 0, 0); |
11180 | #endif |
11181 | #ifdef NATIVE_SYSTEM_HEADER_DIR |
11182 | /* Then search: <sysroot>/usr/include/finclude/<multilib> */ |
11183 | add_sysrooted_hdrs_prefix (&prefixes, NATIVE_SYSTEM_HEADER_DIR "/finclude/", |
11184 | NULL, 0, 0, 0); |
11185 | #endif |
11186 | |
11187 | const char *path = find_a_file (pprefix: &include_prefixes, name: argv[1], R_OK, do_multi: false); |
11188 | if (path != NULL) |
11189 | result = concat (argv[0], path, NULL); |
11190 | else |
11191 | { |
11192 | path = find_a_file (pprefix: &prefixes, name: argv[1], R_OK, do_multi: false); |
11193 | if (path != NULL) |
11194 | result = concat (argv[0], path, NULL); |
11195 | } |
11196 | |
11197 | path_prefix_reset (prefix: &prefixes); |
11198 | return result; |
11199 | } |
11200 | |
11201 | /* The function takes any number of arguments and joins them together. |
11202 | |
11203 | This seems to be necessary to build "-fjoined=foo.b" from "-fseparate foo.a" |
11204 | with a %{fseparate*:-fjoined=%.b$*} rule without adding undesired spaces: |
11205 | when doing $* replacement we first replace $* with the rest of the switch |
11206 | (in this case ""), and then add any arguments as arguments after the result, |
11207 | resulting in "-fjoined= foo.b". Using this function with e.g. |
11208 | %{fseparate*:-fjoined=%:join(%.b$*)} gets multiple words as separate argv |
11209 | elements instead of separated by spaces, and we paste them together. */ |
11210 | |
11211 | static const char * |
11212 | join_spec_func (int argc, const char **argv) |
11213 | { |
11214 | if (argc == 1) |
11215 | return argv[0]; |
11216 | for (int i = 0; i < argc; ++i) |
11217 | obstack_grow (&obstack, argv[i], strlen (argv[i])); |
11218 | obstack_1grow (&obstack, '\0'); |
11219 | return XOBFINISH (&obstack, const char *); |
11220 | } |
11221 | |
11222 | /* If any character in ORIG fits QUOTE_P (_, P), reallocate the string |
11223 | so as to precede every one of them with a backslash. Return the |
11224 | original string or the reallocated one. */ |
11225 | |
11226 | static inline char * |
11227 | quote_string (char *orig, bool (*quote_p)(char, void *), void *p) |
11228 | { |
11229 | int len, number_of_space = 0; |
11230 | |
11231 | for (len = 0; orig[len]; len++) |
11232 | if (quote_p (orig[len], p)) |
11233 | number_of_space++; |
11234 | |
11235 | if (number_of_space) |
11236 | { |
11237 | char *new_spec = (char *) xmalloc (len + number_of_space + 1); |
11238 | int j, k; |
11239 | for (j = 0, k = 0; j <= len; j++, k++) |
11240 | { |
11241 | if (quote_p (orig[j], p)) |
11242 | new_spec[k++] = '\\'; |
11243 | new_spec[k] = orig[j]; |
11244 | } |
11245 | free (ptr: orig); |
11246 | return new_spec; |
11247 | } |
11248 | else |
11249 | return orig; |
11250 | } |
11251 | |
11252 | /* Return true iff C is any of the characters convert_white_space |
11253 | should quote. */ |
11254 | |
11255 | static inline bool |
11256 | whitespace_to_convert_p (char c, void *) |
11257 | { |
11258 | return (c == ' ' || c == '\t'); |
11259 | } |
11260 | |
11261 | /* Insert backslash before spaces in ORIG (usually a file path), to |
11262 | avoid being broken by spec parser. |
11263 | |
11264 | This function is needed as do_spec_1 treats white space (' ' and '\t') |
11265 | as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so, |
11266 | the file name should be treated as a single argument rather than being |
11267 | broken into multiple. Solution is to insert '\\' before the space in a |
11268 | file name. |
11269 | |
11270 | This function converts and only converts all occurrence of ' ' |
11271 | to '\\' + ' ' and '\t' to '\\' + '\t'. For example: |
11272 | "a b" -> "a\\ b" |
11273 | "a b" -> "a\\ \\ b" |
11274 | "a\tb" -> "a\\\tb" |
11275 | "a\\ b" -> "a\\\\ b" |
11276 | |
11277 | orig: input null-terminating string that was allocated by xalloc. The |
11278 | memory it points to might be freed in this function. Behavior undefined |
11279 | if ORIG wasn't xalloced or was freed already at entry. |
11280 | |
11281 | Return: ORIG if no conversion needed. Otherwise a newly allocated string |
11282 | that was converted from ORIG. */ |
11283 | |
11284 | static char * |
11285 | convert_white_space (char *orig) |
11286 | { |
11287 | return quote_string (orig, quote_p: whitespace_to_convert_p, NULL); |
11288 | } |
11289 | |
11290 | /* Return true iff C matches any of the spec active characters. */ |
11291 | static inline bool |
11292 | quote_spec_char_p (char c, void *) |
11293 | { |
11294 | switch (c) |
11295 | { |
11296 | case ' ': |
11297 | case '\t': |
11298 | case '\n': |
11299 | case '|': |
11300 | case '%': |
11301 | case '\\': |
11302 | return true; |
11303 | |
11304 | default: |
11305 | return false; |
11306 | } |
11307 | } |
11308 | |
11309 | /* Like convert_white_space, but deactivate all active spec chars by |
11310 | quoting them. */ |
11311 | |
11312 | static inline char * |
11313 | quote_spec (char *orig) |
11314 | { |
11315 | return quote_string (orig, quote_p: quote_spec_char_p, NULL); |
11316 | } |
11317 | |
11318 | /* Like quote_spec, but also turn an empty string into the spec for an |
11319 | empty argument. */ |
11320 | |
11321 | static inline char * |
11322 | quote_spec_arg (char *orig) |
11323 | { |
11324 | if (!*orig) |
11325 | { |
11326 | free (ptr: orig); |
11327 | return xstrdup ("%\""); |
11328 | } |
11329 | |
11330 | return quote_spec (orig); |
11331 | } |
11332 | |
11333 | /* Restore all state within gcc.cc to the initial state, so that the driver |
11334 | code can be safely re-run in-process. |
11335 | |
11336 | Many const char * variables are referenced by static specs (see |
11337 | INIT_STATIC_SPEC above). These variables are restored to their default |
11338 | values by a simple loop over the static specs. |
11339 | |
11340 | For other variables, we directly restore them all to their initial |
11341 | values (often implicitly 0). |
11342 | |
11343 | Free the various obstacks in this file, along with "opts_obstack" |
11344 | from opts.cc. |
11345 | |
11346 | This function also restores any environment variables that were changed. */ |
11347 | |
11348 | void |
11349 | driver::finalize () |
11350 | { |
11351 | env.restore (); |
11352 | diagnostic_finish (context: global_dc); |
11353 | |
11354 | is_cpp_driver = 0; |
11355 | at_file_supplied = 0; |
11356 | print_help_list = 0; |
11357 | print_version = 0; |
11358 | verbose_only_flag = 0; |
11359 | print_subprocess_help = 0; |
11360 | use_ld = NULL; |
11361 | report_times_to_file = NULL; |
11362 | target_system_root = DEFAULT_TARGET_SYSTEM_ROOT; |
11363 | target_system_root_changed = 0; |
11364 | target_sysroot_suffix = 0; |
11365 | target_sysroot_hdrs_suffix = 0; |
11366 | save_temps_flag = SAVE_TEMPS_NONE; |
11367 | save_temps_overrides_dumpdir = false; |
11368 | dumpdir_trailing_dash_added = false; |
11369 | free (ptr: dumpdir); |
11370 | free (ptr: dumpbase); |
11371 | free (ptr: dumpbase_ext); |
11372 | free (ptr: outbase); |
11373 | dumpdir = dumpbase = dumpbase_ext = outbase = NULL; |
11374 | dumpdir_length = outbase_length = 0; |
11375 | spec_machine = DEFAULT_TARGET_MACHINE; |
11376 | greatest_status = 1; |
11377 | |
11378 | obstack_free (&obstack, NULL); |
11379 | obstack_free (&opts_obstack, NULL); /* in opts.cc */ |
11380 | obstack_free (&collect_obstack, NULL); |
11381 | |
11382 | link_command_spec = LINK_COMMAND_SPEC; |
11383 | |
11384 | obstack_free (&multilib_obstack, NULL); |
11385 | |
11386 | user_specs_head = NULL; |
11387 | user_specs_tail = NULL; |
11388 | |
11389 | /* Within the "compilers" vec, the fields "suffix" and "spec" were |
11390 | statically allocated for the default compilers, but dynamically |
11391 | allocated for additional compilers. Delete them for the latter. */ |
11392 | for (int i = n_default_compilers; i < n_compilers; i++) |
11393 | { |
11394 | free (ptr: const_cast <char *> (compilers[i].suffix)); |
11395 | free (ptr: const_cast <char *> (compilers[i].spec)); |
11396 | } |
11397 | XDELETEVEC (compilers); |
11398 | compilers = NULL; |
11399 | n_compilers = 0; |
11400 | |
11401 | linker_options.truncate (size: 0); |
11402 | assembler_options.truncate (size: 0); |
11403 | preprocessor_options.truncate (size: 0); |
11404 | |
11405 | path_prefix_reset (prefix: &exec_prefixes); |
11406 | path_prefix_reset (prefix: &startfile_prefixes); |
11407 | path_prefix_reset (prefix: &include_prefixes); |
11408 | |
11409 | machine_suffix = 0; |
11410 | just_machine_suffix = 0; |
11411 | gcc_exec_prefix = 0; |
11412 | gcc_libexec_prefix = 0; |
11413 | set_static_spec_shared (spec: &md_exec_prefix, MD_EXEC_PREFIX); |
11414 | set_static_spec_shared (spec: &md_startfile_prefix, MD_STARTFILE_PREFIX); |
11415 | set_static_spec_shared (spec: &md_startfile_prefix_1, MD_STARTFILE_PREFIX_1); |
11416 | multilib_dir = 0; |
11417 | multilib_os_dir = 0; |
11418 | multiarch_dir = 0; |
11419 | |
11420 | /* Free any specs dynamically-allocated by set_spec. |
11421 | These will be at the head of the list, before the |
11422 | statically-allocated ones. */ |
11423 | if (specs) |
11424 | { |
11425 | while (specs != static_specs) |
11426 | { |
11427 | spec_list *next = specs->next; |
11428 | free (ptr: const_cast <char *> (specs->name)); |
11429 | XDELETE (specs); |
11430 | specs = next; |
11431 | } |
11432 | specs = 0; |
11433 | } |
11434 | for (unsigned i = 0; i < ARRAY_SIZE (static_specs); i++) |
11435 | { |
11436 | spec_list *sl = &static_specs[i]; |
11437 | if (sl->alloc_p) |
11438 | { |
11439 | free (ptr: const_cast <char *> (*(sl->ptr_spec))); |
11440 | sl->alloc_p = false; |
11441 | } |
11442 | *(sl->ptr_spec) = sl->default_ptr; |
11443 | } |
11444 | #ifdef EXTRA_SPECS |
11445 | extra_specs = NULL; |
11446 | #endif |
11447 | |
11448 | processing_spec_function = 0; |
11449 | |
11450 | clear_args (); |
11451 | |
11452 | have_c = 0; |
11453 | have_o = 0; |
11454 | |
11455 | temp_names = NULL; |
11456 | execution_count = 0; |
11457 | signal_count = 0; |
11458 | |
11459 | temp_filename = NULL; |
11460 | temp_filename_length = 0; |
11461 | always_delete_queue = NULL; |
11462 | failure_delete_queue = NULL; |
11463 | |
11464 | XDELETEVEC (switches); |
11465 | switches = NULL; |
11466 | n_switches = 0; |
11467 | n_switches_alloc = 0; |
11468 | |
11469 | compare_debug = 0; |
11470 | compare_debug_second = 0; |
11471 | compare_debug_opt = NULL; |
11472 | for (int i = 0; i < 2; i++) |
11473 | { |
11474 | switches_debug_check[i] = NULL; |
11475 | n_switches_debug_check[i] = 0; |
11476 | n_switches_alloc_debug_check[i] = 0; |
11477 | debug_check_temp_file[i] = NULL; |
11478 | } |
11479 | |
11480 | XDELETEVEC (infiles); |
11481 | infiles = NULL; |
11482 | n_infiles = 0; |
11483 | n_infiles_alloc = 0; |
11484 | |
11485 | combine_inputs = false; |
11486 | added_libraries = 0; |
11487 | XDELETEVEC (outfiles); |
11488 | outfiles = NULL; |
11489 | spec_lang = 0; |
11490 | last_language_n_infiles = 0; |
11491 | gcc_input_filename = NULL; |
11492 | input_file_number = 0; |
11493 | input_filename_length = 0; |
11494 | basename_length = 0; |
11495 | suffixed_basename_length = 0; |
11496 | input_basename = NULL; |
11497 | input_suffix = NULL; |
11498 | /* We don't need to purge "input_stat", just to unset "input_stat_set". */ |
11499 | input_stat_set = 0; |
11500 | input_file_compiler = NULL; |
11501 | arg_going = 0; |
11502 | delete_this_arg = 0; |
11503 | this_is_output_file = 0; |
11504 | this_is_library_file = 0; |
11505 | this_is_linker_script = 0; |
11506 | input_from_pipe = 0; |
11507 | suffix_subst = NULL; |
11508 | |
11509 | XDELETEVEC (mdswitches); |
11510 | mdswitches = NULL; |
11511 | n_mdswitches = 0; |
11512 | |
11513 | used_arg.finalize (); |
11514 | } |
11515 | |
11516 | /* PR jit/64810. |
11517 | Targets can provide configure-time default options in |
11518 | OPTION_DEFAULT_SPECS. The jit needs to access these, but |
11519 | they are expressed in the spec language. |
11520 | |
11521 | Run just enough of the driver to be able to expand these |
11522 | specs, and then call the callback CB on each |
11523 | such option. The options strings are *without* a leading |
11524 | '-' character e.g. ("march=x86-64"). Finally, clean up. */ |
11525 | |
11526 | void |
11527 | driver_get_configure_time_options (void (*cb) (const char *option, |
11528 | void *user_data), |
11529 | void *user_data) |
11530 | { |
11531 | size_t i; |
11532 | |
11533 | obstack_init (&obstack); |
11534 | init_opts_obstack (); |
11535 | n_switches = 0; |
11536 | |
11537 | for (i = 0; i < ARRAY_SIZE (option_default_specs); i++) |
11538 | do_option_spec (name: option_default_specs[i].name, |
11539 | spec: option_default_specs[i].spec); |
11540 | |
11541 | for (i = 0; (int) i < n_switches; i++) |
11542 | { |
11543 | gcc_assert (switches[i].part1); |
11544 | (*cb) (switches[i].part1, user_data); |
11545 | } |
11546 | |
11547 | obstack_free (&opts_obstack, NULL); |
11548 | obstack_free (&obstack, NULL); |
11549 | n_switches = 0; |
11550 | } |
11551 |
Definitions
- env_manager
- kv
- env
- init
- get
- xput
- restore
- dir_separator_str
- is_cpp_driver
- at_file_supplied
- print_help_list
- print_version
- completion
- verbose_only_flag
- print_subprocess_help
- use_ld
- report_times_to_file
- target_system_root
- target_system_root_changed
- target_sysroot_suffix
- target_sysroot_hdrs_suffix
- save_temps
- save_temps_flag
- save_temps_overrides_dumpdir
- dumpdir
- dumpbase
- dumpbase_ext
- dumpdir_length
- dumpdir_trailing_dash_added
- avoid_linker_hardening_p
- static_p
- outbase
- outbase_length
- compiler_version
- spec_version
- spec_machine
- spec_host_machine
- offload_targets
- cross_compile
- greatest_status
- obstack
- collect_obstack
- asm_debug
- asm_debug_option
- cpp_spec
- cc1_spec
- cc1plus_spec
- link_gcc_c_sequence_spec
- link_ssp_spec
- asm_spec
- asm_final_spec
- link_spec
- lib_spec
- link_gomp_spec
- libgcc_spec
- endfile_spec
- startfile_spec
- linker_name_spec
- linker_plugin_file_spec
- lto_wrapper_spec
- lto_gcc_spec
- post_link_spec
- link_command_spec
- link_libgcc_spec
- startfile_prefix_spec
- sysroot_spec
- sysroot_suffix_spec
- sysroot_hdrs_suffix_spec
- self_spec
- trad_capable_cpp
- cpp_unique_options
- cpp_options
- cpp_debug_options
- cc1_options
- asm_options
- invoke_as
- multilib_obstack
- multilib_select
- multilib_matches
- multilib_defaults
- multilib_exclusions
- multilib_reuse
- multilib_defaults_raw
- driver_self_specs
- default_spec
- option_default_specs
- user_specs
- user_specs_head
- user_specs_tail
- compiler
- compilers
- n_compilers
- default_compilers
- n_default_compilers
- linker_options
- assembler_options
- preprocessor_options
- skip_whitespace
- prefix_list
- path_prefix
- exec_prefixes
- startfile_prefixes
- include_prefixes
- machine_suffix
- just_machine_suffix
- gcc_exec_prefix
- gcc_libexec_prefix
- standard_exec_prefix
- standard_libexec_prefix
- standard_bindir_prefix
- standard_startfile_prefix
- md_exec_prefix
- md_startfile_prefix
- md_startfile_prefix_1
- standard_startfile_prefix_1
- standard_startfile_prefix_2
- tooldir_base_prefix
- accel_dir_suffix
- multilib_dir
- multilib_os_dir
- multiarch_dir
- spec_list
- static_specs
- spec_list_1
- extra_specs_1
- extra_specs
- specs
- static_spec_functions
- processing_spec_function
- init_gcc_specs
- init_spec
- set_static_spec
- set_static_spec_owned
- set_static_spec_shared
- set_spec
- argbuf
- at_file_argbuf
- in_at_file
- have_c
- have_o
- have_E
- output_file
- totruncate_file
- temp_name
- temp_names
- execution_count
- signal_count
- alloc_args
- clear_args
- store_arg
- open_at_file
- make_at_file
- close_at_file
- load_specs
- read_specs
- temp_filename
- temp_filename_length
- temp_file
- always_delete_queue
- failure_delete_queue
- record_temp_file
- delete_if_ordinary
- delete_temp_files
- delete_failure_queue
- clear_failure_queue
- for_each_path
- add_to_obstack_info
- add_to_obstack
- xputenv
- build_search_list
- putenv_from_prefixes
- access_check
- file_at_path_info
- file_at_path
- find_a_file
- find_a_program
- path_prefix_priority
- add_prefix
- add_sysrooted_prefix
- add_sysrooted_hdrs_prefix
- execute
- switches
- n_switches
- n_switches_alloc
- compare_debug
- compare_debug_second
- compare_debug_opt
- switches_debug_check
- n_switches_debug_check
- n_switches_alloc_debug_check
- debug_check_temp_file
- infile
- infiles
- n_infiles
- n_infiles_alloc
- spec_undefvar_allowed
- combine_inputs
- added_libraries
- outfiles
- display_help
- add_preprocessor_option
- add_assembler_option
- add_linker_option
- alloc_infile
- add_infile
- alloc_switch
- save_switch
- set_source_date_epoch_envvar
- driver_unknown_option_callback
- driver_wrong_lang_callback
- spec_lang
- last_language_n_infiles
- check_offload_target_name
- check_foffload_target_names
- handle_foffload_option
- forward_offload_option
- driver_handle_option
- adds_single_suffix_p
- set_option_handlers
- single_input_file_index
- process_command
- set_collect_gcc_options
- gcc_input_filename
- input_file_number
- input_filename_length
- basename_length
- suffixed_basename_length
- input_basename
- input_suffix
- input_stat
- input_stat_set
- input_file_compiler
- arg_going
- delete_this_arg
- this_is_output_file
- this_is_library_file
- this_is_linker_script
- input_from_pipe
- suffix_subst
- end_going_arg
- insert_wrapper
- do_spec
- do_spec_2
- do_option_spec
- do_self_spec
- spec_path_info
- spec_path
- compile_input_file_p
- do_specs_vec
- putenv_COLLECT_AS_OPTIONS
- do_spec_1
- lookup_spec_function
- eval_spec_function
- handle_spec_function
- input_suffix_matches
- input_spec_matches
- switch_matches
- mark_matching_switches
- process_marked_switches
- handle_braces
- process_brace_body
- check_live_switch
- give_switch
- print_configuration
- files_equal_p
- check_repro
- attempt_status
- run_attempt
- insert_comments
- do_report_bug
- try_generate_repro
- find_file
- is_directory
- set_input
- fatal_signal
- compare_files
- driver
- ~driver
- main
- set_progname
- expand_at_files
- decode_argv
- global_initializations
- build_multilib_strings
- set_up_specs
- putenv_COLLECT_GCC
- maybe_putenv_COLLECT_LTO_WRAPPER
- maybe_putenv_OFFLOAD_TARGETS
- handle_unrecognized_options
- maybe_print_and_exit
- prepare_infiles
- do_spec_on_infiles
- maybe_run_linker
- final_actions
- detect_jobserver
- get_exit_code
- lookup_compiler
- save_string
- validate_switches_from_spec
- validate_all_switches
- validate_switches
- mdswitchstr
- mdswitches
- n_mdswitches
- used_arg_t
- mswitchstr
- used_arg
- operator ()
- finalize
- default_arg
- find_multilib_os_dir_by_multilib_dir
- set_multilib_dir
- print_multilib_info
- getenv_spec_function
- if_exists_spec_function
- if_exists_else_spec_function
- if_exists_then_else_spec_function
- sanitize_spec_function
- replace_outfile_spec_function
- remove_outfile_spec_function
- compare_version_strings
- version_compare_spec_function
- include_spec_function
- find_file_spec_function
- find_plugindir_spec_function
- print_asm_header_spec_function
- get_random_number
- compare_debug_dump_opt_spec_function
- compare_debug_self_opt_spec_function
- pass_through_libs_spec_func
- not_actual_file_p
- dumps_spec_func
- greater_than_spec_func
- debug_level_greater_than_spec_func
- dwarf_version_greater_than_spec_func
- path_prefix_reset
- find_fortran_preinclude_file
- join_spec_func
- quote_string
- whitespace_to_convert_p
- convert_white_space
- quote_spec_char_p
- quote_spec
- quote_spec_arg
- finalize
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