1 | /* Compiler driver program that can handle many languages. |
2 | Copyright (C) 1987-2023 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 | #include "coretypes.h" |
34 | #include "multilib.h" /* before tm.h */ |
35 | #include "tm.h" |
36 | #include "xregex.h" |
37 | #include "obstack.h" |
38 | #include "intl.h" |
39 | #include "prefix.h" |
40 | #include "opt-suggestions.h" |
41 | #include "gcc.h" |
42 | #include "diagnostic.h" |
43 | #include "flags.h" |
44 | #include "opts.h" |
45 | #include "filenames.h" |
46 | #include "spellcheck.h" |
47 | #include "opts-jobserver.h" |
48 | #include "common/common-target.h" |
49 | #include "gcc-urlifier.h" |
50 | |
51 | #ifndef MATH_LIBRARY |
52 | #define MATH_LIBRARY "m" |
53 | #endif |
54 | |
55 | |
56 | /* Manage the manipulation of env vars. |
57 | |
58 | We poison "getenv" and "putenv", so that all enviroment-handling is |
59 | done through this class. Note that poisoning happens in the |
60 | preprocessor at the identifier level, and doesn't distinguish between |
61 | env.getenv (); |
62 | and |
63 | getenv (); |
64 | Hence we need to use "get" for the accessor method, not "getenv". */ |
65 | |
66 | struct env_manager |
67 | { |
68 | public: |
69 | void init (bool can_restore, bool debug); |
70 | const char *get (const char *name); |
71 | void xput (const char *string); |
72 | void restore (); |
73 | |
74 | private: |
75 | bool m_can_restore; |
76 | bool m_debug; |
77 | struct kv |
78 | { |
79 | char *m_key; |
80 | char *m_value; |
81 | }; |
82 | vec<kv> m_keys; |
83 | |
84 | }; |
85 | |
86 | /* The singleton instance of class env_manager. */ |
87 | |
88 | static env_manager env; |
89 | |
90 | /* Initializer for class env_manager. |
91 | |
92 | We can't do this as a constructor since we have a statically |
93 | allocated instance ("env" above). */ |
94 | |
95 | void |
96 | env_manager::init (bool can_restore, bool debug) |
97 | { |
98 | m_can_restore = can_restore; |
99 | m_debug = debug; |
100 | } |
101 | |
102 | /* Get the value of NAME within the environment. Essentially |
103 | a wrapper for ::getenv, but adding logging, and the possibility |
104 | of caching results. */ |
105 | |
106 | const char * |
107 | env_manager::get (const char *name) |
108 | { |
109 | const char *result = ::getenv (name: name); |
110 | if (m_debug) |
111 | fprintf (stderr, format: "env_manager::getenv (%s) -> %s\n" , name, result); |
112 | return result; |
113 | } |
114 | |
115 | /* Put the given KEY=VALUE entry STRING into the environment. |
116 | If the env_manager was initialized with CAN_RESTORE set, then |
117 | also record the old value of KEY within the environment, so that it |
118 | can be later restored. */ |
119 | |
120 | void |
121 | env_manager::xput (const char *string) |
122 | { |
123 | if (m_debug) |
124 | fprintf (stderr, format: "env_manager::xput (%s)\n" , string); |
125 | if (verbose_flag) |
126 | fnotice (stderr, "%s\n" , string); |
127 | |
128 | if (m_can_restore) |
129 | { |
130 | char *equals = strchr (s: const_cast <char *> (string), c: '='); |
131 | gcc_assert (equals); |
132 | |
133 | struct kv kv; |
134 | kv.m_key = xstrndup (string, equals - string); |
135 | const char *cur_value = ::getenv (name: kv.m_key); |
136 | if (m_debug) |
137 | fprintf (stderr, format: "saving old value: %s\n" ,cur_value); |
138 | kv.m_value = cur_value ? xstrdup (cur_value) : NULL; |
139 | m_keys.safe_push (obj: kv); |
140 | } |
141 | |
142 | ::putenv (CONST_CAST (char *, string)); |
143 | } |
144 | |
145 | /* Undo any xputenv changes made since last restore. |
146 | Can only be called if the env_manager was initialized with |
147 | CAN_RESTORE enabled. */ |
148 | |
149 | void |
150 | env_manager::restore () |
151 | { |
152 | unsigned int i; |
153 | struct kv *item; |
154 | |
155 | gcc_assert (m_can_restore); |
156 | |
157 | FOR_EACH_VEC_ELT_REVERSE (m_keys, i, item) |
158 | { |
159 | if (m_debug) |
160 | printf (format: "restoring saved key: %s value: %s\n" , item->m_key, item->m_value); |
161 | if (item->m_value) |
162 | ::setenv (name: item->m_key, value: item->m_value, replace: 1); |
163 | else |
164 | ::unsetenv (name: item->m_key); |
165 | free (ptr: item->m_key); |
166 | free (ptr: item->m_value); |
167 | } |
168 | |
169 | m_keys.truncate (size: 0); |
170 | } |
171 | |
172 | /* Forbid other uses of getenv and putenv. */ |
173 | #if (GCC_VERSION >= 3000) |
174 | #pragma GCC poison getenv putenv |
175 | #endif |
176 | |
177 | |
178 | |
179 | /* By default there is no special suffix for target executables. */ |
180 | #ifdef TARGET_EXECUTABLE_SUFFIX |
181 | #define HAVE_TARGET_EXECUTABLE_SUFFIX |
182 | #else |
183 | #define TARGET_EXECUTABLE_SUFFIX "" |
184 | #endif |
185 | |
186 | /* By default there is no special suffix for host executables. */ |
187 | #ifdef HOST_EXECUTABLE_SUFFIX |
188 | #define HAVE_HOST_EXECUTABLE_SUFFIX |
189 | #else |
190 | #define HOST_EXECUTABLE_SUFFIX "" |
191 | #endif |
192 | |
193 | /* By default, the suffix for target object files is ".o". */ |
194 | #ifdef TARGET_OBJECT_SUFFIX |
195 | #define HAVE_TARGET_OBJECT_SUFFIX |
196 | #else |
197 | #define TARGET_OBJECT_SUFFIX ".o" |
198 | #endif |
199 | |
200 | static const char dir_separator_str[] = { DIR_SEPARATOR, 0 }; |
201 | |
202 | /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */ |
203 | #ifndef LIBRARY_PATH_ENV |
204 | #define LIBRARY_PATH_ENV "LIBRARY_PATH" |
205 | #endif |
206 | |
207 | /* If a stage of compilation returns an exit status >= 1, |
208 | compilation of that file ceases. */ |
209 | |
210 | #define MIN_FATAL_STATUS 1 |
211 | |
212 | /* Flag set by cppspec.cc to 1. */ |
213 | int is_cpp_driver; |
214 | |
215 | /* Flag set to nonzero if an @file argument has been supplied to gcc. */ |
216 | static bool at_file_supplied; |
217 | |
218 | /* Definition of string containing the arguments given to configure. */ |
219 | #include "configargs.h" |
220 | |
221 | /* Flag saying to print the command line options understood by gcc and its |
222 | sub-processes. */ |
223 | |
224 | static int print_help_list; |
225 | |
226 | /* Flag saying to print the version of gcc and its sub-processes. */ |
227 | |
228 | static int print_version; |
229 | |
230 | /* Flag that stores string prefix for which we provide bash completion. */ |
231 | |
232 | static const char *completion = NULL; |
233 | |
234 | /* Flag indicating whether we should ONLY print the command and |
235 | arguments (like verbose_flag) without executing the command. |
236 | Displayed arguments are quoted so that the generated command |
237 | line is suitable for execution. This is intended for use in |
238 | shell scripts to capture the driver-generated command line. */ |
239 | static int verbose_only_flag; |
240 | |
241 | /* Flag indicating how to print command line options of sub-processes. */ |
242 | |
243 | static int print_subprocess_help; |
244 | |
245 | /* Linker suffix passed to -fuse-ld=... */ |
246 | static const char *use_ld; |
247 | |
248 | /* Whether we should report subprocess execution times to a file. */ |
249 | |
250 | FILE *report_times_to_file = NULL; |
251 | |
252 | /* Nonzero means place this string before uses of /, so that include |
253 | and library files can be found in an alternate location. */ |
254 | |
255 | #ifdef TARGET_SYSTEM_ROOT |
256 | #define DEFAULT_TARGET_SYSTEM_ROOT (TARGET_SYSTEM_ROOT) |
257 | #else |
258 | #define DEFAULT_TARGET_SYSTEM_ROOT (0) |
259 | #endif |
260 | static const char *target_system_root = DEFAULT_TARGET_SYSTEM_ROOT; |
261 | |
262 | /* Nonzero means pass the updated target_system_root to the compiler. */ |
263 | |
264 | static int target_system_root_changed; |
265 | |
266 | /* Nonzero means append this string to target_system_root. */ |
267 | |
268 | static const char *target_sysroot_suffix = 0; |
269 | |
270 | /* Nonzero means append this string to target_system_root for headers. */ |
271 | |
272 | static const char *target_sysroot_hdrs_suffix = 0; |
273 | |
274 | /* Nonzero means write "temp" files in source directory |
275 | and use the source file's name in them, and don't delete them. */ |
276 | |
277 | static enum save_temps { |
278 | SAVE_TEMPS_NONE, /* no -save-temps */ |
279 | SAVE_TEMPS_CWD, /* -save-temps in current directory */ |
280 | SAVE_TEMPS_DUMP, /* -save-temps in dumpdir */ |
281 | SAVE_TEMPS_OBJ /* -save-temps in object directory */ |
282 | } save_temps_flag; |
283 | |
284 | /* Set this iff the dumppfx implied by a -save-temps=* option is to |
285 | override a -dumpdir option, if any. */ |
286 | static bool save_temps_overrides_dumpdir = false; |
287 | |
288 | /* -dumpdir, -dumpbase and -dumpbase-ext flags passed in, possibly |
289 | rearranged as they are to be passed down, e.g., dumpbase and |
290 | dumpbase_ext may be cleared if integrated with dumpdir or |
291 | dropped. */ |
292 | static char *dumpdir, *dumpbase, *dumpbase_ext; |
293 | |
294 | /* Usually the length of the string in dumpdir. However, during |
295 | linking, it may be shortened to omit a driver-added trailing dash, |
296 | by then replaced with a trailing period, that is still to be passed |
297 | to sub-processes in -dumpdir, but not to be generally used in spec |
298 | filename expansions. See maybe_run_linker. */ |
299 | static size_t dumpdir_length = 0; |
300 | |
301 | /* Set if the last character in dumpdir is (or was) a dash that the |
302 | driver added to dumpdir after dumpbase or linker output name. */ |
303 | static bool dumpdir_trailing_dash_added = false; |
304 | |
305 | /* Basename of dump and aux outputs, computed from dumpbase (given or |
306 | derived from output name), to override input_basename in non-%w %b |
307 | et al. */ |
308 | static char *outbase; |
309 | static size_t outbase_length = 0; |
310 | |
311 | /* The compiler version. */ |
312 | |
313 | static const char *compiler_version; |
314 | |
315 | /* The target version. */ |
316 | |
317 | static const char *const spec_version = DEFAULT_TARGET_VERSION; |
318 | |
319 | /* The target machine. */ |
320 | |
321 | static const char *spec_machine = DEFAULT_TARGET_MACHINE; |
322 | static const char *spec_host_machine = DEFAULT_REAL_TARGET_MACHINE; |
323 | |
324 | /* List of offload targets. Separated by colon. Empty string for |
325 | -foffload=disable. */ |
326 | |
327 | static char *offload_targets = NULL; |
328 | |
329 | #if OFFLOAD_DEFAULTED |
330 | /* Set to true if -foffload has not been used and offload_targets |
331 | is set to the configured in default. */ |
332 | static bool offload_targets_default; |
333 | #endif |
334 | |
335 | /* Nonzero if cross-compiling. |
336 | When -b is used, the value comes from the `specs' file. */ |
337 | |
338 | #ifdef CROSS_DIRECTORY_STRUCTURE |
339 | static const char *cross_compile = "1" ; |
340 | #else |
341 | static const char *cross_compile = "0" ; |
342 | #endif |
343 | |
344 | /* Greatest exit code of sub-processes that has been encountered up to |
345 | now. */ |
346 | static int greatest_status = 1; |
347 | |
348 | /* This is the obstack which we use to allocate many strings. */ |
349 | |
350 | static struct obstack obstack; |
351 | |
352 | /* This is the obstack to build an environment variable to pass to |
353 | collect2 that describes all of the relevant switches of what to |
354 | pass the compiler in building the list of pointers to constructors |
355 | and destructors. */ |
356 | |
357 | static struct obstack collect_obstack; |
358 | |
359 | /* Forward declaration for prototypes. */ |
360 | struct path_prefix; |
361 | struct prefix_list; |
362 | |
363 | static void init_spec (void); |
364 | static void store_arg (const char *, int, int); |
365 | static void insert_wrapper (const char *); |
366 | static char *load_specs (const char *); |
367 | static void read_specs (const char *, bool, bool); |
368 | static void set_spec (const char *, const char *, bool); |
369 | static struct compiler *lookup_compiler (const char *, size_t, const char *); |
370 | static char *build_search_list (const struct path_prefix *, const char *, |
371 | bool, bool); |
372 | static void xputenv (const char *); |
373 | static void putenv_from_prefixes (const struct path_prefix *, const char *, |
374 | bool); |
375 | static int access_check (const char *, int); |
376 | static char *find_a_file (const struct path_prefix *, const char *, int, bool); |
377 | static char *find_a_program (const char *); |
378 | static void add_prefix (struct path_prefix *, const char *, const char *, |
379 | int, int, int); |
380 | static void add_sysrooted_prefix (struct path_prefix *, const char *, |
381 | const char *, int, int, int); |
382 | static char *skip_whitespace (char *); |
383 | static void delete_if_ordinary (const char *); |
384 | static void delete_temp_files (void); |
385 | static void delete_failure_queue (void); |
386 | static void clear_failure_queue (void); |
387 | static int check_live_switch (int, int); |
388 | static const char *handle_braces (const char *); |
389 | static inline bool input_suffix_matches (const char *, const char *); |
390 | static inline bool switch_matches (const char *, const char *, int); |
391 | static inline void mark_matching_switches (const char *, const char *, int); |
392 | static inline void process_marked_switches (void); |
393 | static const char *process_brace_body (const char *, const char *, const char *, int, int); |
394 | static const struct spec_function *lookup_spec_function (const char *); |
395 | static const char *eval_spec_function (const char *, const char *, const char *); |
396 | static const char *handle_spec_function (const char *, bool *, const char *); |
397 | static char *save_string (const char *, int); |
398 | static void set_collect_gcc_options (void); |
399 | static int do_spec_1 (const char *, int, const char *); |
400 | static int do_spec_2 (const char *, const char *); |
401 | static void do_option_spec (const char *, const char *); |
402 | static void do_self_spec (const char *); |
403 | static const char *find_file (const char *); |
404 | static int is_directory (const char *, bool); |
405 | static const char *validate_switches (const char *, bool, bool); |
406 | static void validate_all_switches (void); |
407 | static inline void validate_switches_from_spec (const char *, bool); |
408 | static void give_switch (int, int); |
409 | static int default_arg (const char *, int); |
410 | static void set_multilib_dir (void); |
411 | static void print_multilib_info (void); |
412 | static void display_help (void); |
413 | static void add_preprocessor_option (const char *, int); |
414 | static void add_assembler_option (const char *, int); |
415 | static void add_linker_option (const char *, int); |
416 | static void process_command (unsigned int, struct cl_decoded_option *); |
417 | static int execute (void); |
418 | static void alloc_args (void); |
419 | static void clear_args (void); |
420 | static void fatal_signal (int); |
421 | #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) |
422 | static void init_gcc_specs (struct obstack *, const char *, const char *, |
423 | const char *); |
424 | #endif |
425 | #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX) |
426 | static const char *convert_filename (const char *, int, int); |
427 | #endif |
428 | |
429 | static void try_generate_repro (const char **argv); |
430 | static const char *getenv_spec_function (int, const char **); |
431 | static const char *if_exists_spec_function (int, const char **); |
432 | static const char *if_exists_else_spec_function (int, const char **); |
433 | static const char *if_exists_then_else_spec_function (int, const char **); |
434 | static const char *sanitize_spec_function (int, const char **); |
435 | static const char *replace_outfile_spec_function (int, const char **); |
436 | static const char *remove_outfile_spec_function (int, const char **); |
437 | static const char *version_compare_spec_function (int, const char **); |
438 | static const char *include_spec_function (int, const char **); |
439 | static const char *find_file_spec_function (int, const char **); |
440 | static const char *find_plugindir_spec_function (int, const char **); |
441 | static const char *print_asm_header_spec_function (int, const char **); |
442 | static const char *compare_debug_dump_opt_spec_function (int, const char **); |
443 | static const char *compare_debug_self_opt_spec_function (int, const char **); |
444 | static const char *pass_through_libs_spec_func (int, const char **); |
445 | static const char *dumps_spec_func (int, const char **); |
446 | static const char *greater_than_spec_func (int, const char **); |
447 | static const char *debug_level_greater_than_spec_func (int, const char **); |
448 | static const char *dwarf_version_greater_than_spec_func (int, const char **); |
449 | static const char *find_fortran_preinclude_file (int, const char **); |
450 | static const char *join_spec_func (int, const char **); |
451 | static char *convert_white_space (char *); |
452 | static char *quote_spec (char *); |
453 | static char *quote_spec_arg (char *); |
454 | static bool not_actual_file_p (const char *); |
455 | |
456 | |
457 | /* The Specs Language |
458 | |
459 | Specs are strings containing lines, each of which (if not blank) |
460 | is made up of a program name, and arguments separated by spaces. |
461 | The program name must be exact and start from root, since no path |
462 | is searched and it is unreliable to depend on the current working directory. |
463 | Redirection of input or output is not supported; the subprograms must |
464 | accept filenames saying what files to read and write. |
465 | |
466 | In addition, the specs can contain %-sequences to substitute variable text |
467 | or for conditional text. Here is a table of all defined %-sequences. |
468 | Note that spaces are not generated automatically around the results of |
469 | expanding these sequences; therefore, you can concatenate them together |
470 | or with constant text in a single argument. |
471 | |
472 | %% substitute one % into the program name or argument. |
473 | %" substitute an empty argument. |
474 | %i substitute the name of the input file being processed. |
475 | %b substitute the basename for outputs related with the input file |
476 | being processed. This is often a substring of the input file name, |
477 | up to (and not including) the last period but, unless %w is active, |
478 | it is affected by the directory selected by -save-temps=*, by |
479 | -dumpdir, and, in case of multiple compilations, even by -dumpbase |
480 | and -dumpbase-ext and, in case of linking, by the linker output |
481 | name. When %w is active, it derives the main output name only from |
482 | the input file base name; when it is not, it names aux/dump output |
483 | file. |
484 | %B same as %b, but include the input file suffix (text after the last |
485 | period). |
486 | %gSUFFIX |
487 | substitute a file name that has suffix SUFFIX and is chosen |
488 | once per compilation, and mark the argument a la %d. To reduce |
489 | exposure to denial-of-service attacks, the file name is now |
490 | chosen in a way that is hard to predict even when previously |
491 | chosen file names are known. For example, `%g.s ... %g.o ... %g.s' |
492 | might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches |
493 | the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it |
494 | had been pre-processed. Previously, %g was simply substituted |
495 | with a file name chosen once per compilation, without regard |
496 | to any appended suffix (which was therefore treated just like |
497 | ordinary text), making such attacks more likely to succeed. |
498 | %|SUFFIX |
499 | like %g, but if -pipe is in effect, expands simply to "-". |
500 | %mSUFFIX |
501 | like %g, but if -pipe is in effect, expands to nothing. (We have both |
502 | %| and %m to accommodate differences between system assemblers; see |
503 | the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.) |
504 | %uSUFFIX |
505 | like %g, but generates a new temporary file name even if %uSUFFIX |
506 | was already seen. |
507 | %USUFFIX |
508 | substitutes the last file name generated with %uSUFFIX, generating a |
509 | new one if there is no such last file name. In the absence of any |
510 | %uSUFFIX, this is just like %gSUFFIX, except they don't share |
511 | the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s' |
512 | would involve the generation of two distinct file names, one |
513 | for each `%g.s' and another for each `%U.s'. Previously, %U was |
514 | simply substituted with a file name chosen for the previous %u, |
515 | without regard to any appended suffix. |
516 | %jSUFFIX |
517 | substitutes the name of the HOST_BIT_BUCKET, if any, and if it is |
518 | writable, and if save-temps is off; otherwise, substitute the name |
519 | of a temporary file, just like %u. This temporary file is not |
520 | meant for communication between processes, but rather as a junk |
521 | disposal mechanism. |
522 | %.SUFFIX |
523 | substitutes .SUFFIX for the suffixes of a matched switch's args when |
524 | it is subsequently output with %*. SUFFIX is terminated by the next |
525 | space or %. |
526 | %d marks the argument containing or following the %d as a |
527 | temporary file name, so that file will be deleted if GCC exits |
528 | successfully. Unlike %g, this contributes no text to the argument. |
529 | %w marks the argument containing or following the %w as the |
530 | "output file" of this compilation. This puts the argument |
531 | into the sequence of arguments that %o will substitute later. |
532 | %V indicates that this compilation produces no "output file". |
533 | %W{...} |
534 | like %{...} but marks the last argument supplied within as a file |
535 | to be deleted on failure. |
536 | %@{...} |
537 | like %{...} but puts the result into a FILE and substitutes @FILE |
538 | if an @file argument has been supplied. |
539 | %o substitutes the names of all the output files, with spaces |
540 | automatically placed around them. You should write spaces |
541 | around the %o as well or the results are undefined. |
542 | %o is for use in the specs for running the linker. |
543 | Input files whose names have no recognized suffix are not compiled |
544 | at all, but they are included among the output files, so they will |
545 | be linked. |
546 | %O substitutes the suffix for object files. Note that this is |
547 | handled specially when it immediately follows %g, %u, or %U |
548 | (with or without a suffix argument) because of the need for |
549 | those to form complete file names. The handling is such that |
550 | %O is treated exactly as if it had already been substituted, |
551 | except that %g, %u, and %U do not currently support additional |
552 | SUFFIX characters following %O as they would following, for |
553 | example, `.o'. |
554 | %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot |
555 | (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH |
556 | and -B options) and -imultilib as necessary. |
557 | %s current argument is the name of a library or startup file of some sort. |
558 | Search for that file in a standard list of directories |
559 | and substitute the full name found. |
560 | %T current argument is the name of a linker script. |
561 | Search for that file in the current list of directories to scan for |
562 | libraries. If the file is located, insert a --script option into the |
563 | command line followed by the full path name found. If the file is |
564 | not found then generate an error message. |
565 | Note: the current working directory is not searched. |
566 | %eSTR Print STR as an error message. STR is terminated by a newline. |
567 | Use this when inconsistent options are detected. |
568 | %nSTR Print STR as a notice. STR is terminated by a newline. |
569 | %x{OPTION} Accumulate an option for %X. |
570 | %X Output the accumulated linker options specified by compilations. |
571 | %Y Output the accumulated assembler options specified by compilations. |
572 | %Z Output the accumulated preprocessor options specified by compilations. |
573 | %a process ASM_SPEC as a spec. |
574 | This allows config.h to specify part of the spec for running as. |
575 | %A process ASM_FINAL_SPEC as a spec. A capital A is actually |
576 | used here. This can be used to run a post-processor after the |
577 | assembler has done its job. |
578 | %D Dump out a -L option for each directory in startfile_prefixes. |
579 | If multilib_dir is set, extra entries are generated with it affixed. |
580 | %l process LINK_SPEC as a spec. |
581 | %L process LIB_SPEC as a spec. |
582 | %M Output multilib_os_dir. |
583 | %P Output a RUNPATH_OPTION for each directory in startfile_prefixes. |
584 | %G process LIBGCC_SPEC as a spec. |
585 | %R Output the concatenation of target_system_root and |
586 | target_sysroot_suffix. |
587 | %S process STARTFILE_SPEC as a spec. A capital S is actually used here. |
588 | %E process ENDFILE_SPEC as a spec. A capital E is actually used here. |
589 | %C process CPP_SPEC as a spec. |
590 | %1 process CC1_SPEC as a spec. |
591 | %2 process CC1PLUS_SPEC as a spec. |
592 | %* substitute the variable part of a matched option. (See below.) |
593 | Note that each comma in the substituted string is replaced by |
594 | a single space. A space is appended after the last substition |
595 | unless there is more text in current sequence. |
596 | %<S remove all occurrences of -S from the command line. |
597 | Note - this command is position dependent. % commands in the |
598 | spec string before this one will see -S, % commands in the |
599 | spec string after this one will not. |
600 | %>S Similar to "%<S", but keep it in the GCC command line. |
601 | %<S* remove all occurrences of all switches beginning with -S from the |
602 | command line. |
603 | %:function(args) |
604 | Call the named function FUNCTION, passing it ARGS. ARGS is |
605 | first processed as a nested spec string, then split into an |
606 | argument vector in the usual fashion. The function returns |
607 | a string which is processed as if it had appeared literally |
608 | as part of the current spec. |
609 | %{S} substitutes the -S switch, if that switch was given to GCC. |
610 | If that switch was not specified, this substitutes nothing. |
611 | Here S is a metasyntactic variable. |
612 | %{S*} substitutes all the switches specified to GCC whose names start |
613 | with -S. This is used for -o, -I, etc; switches that take |
614 | arguments. GCC considers `-o foo' as being one switch whose |
615 | name starts with `o'. %{o*} would substitute this text, |
616 | including the space; thus, two arguments would be generated. |
617 | %{S*&T*} likewise, but preserve order of S and T options (the order |
618 | of S and T in the spec is not significant). Can be any number |
619 | of ampersand-separated variables; for each the wild card is |
620 | optional. Useful for CPP as %{D*&U*&A*}. |
621 | |
622 | %{S:X} substitutes X, if the -S switch was given to GCC. |
623 | %{!S:X} substitutes X, if the -S switch was NOT given to GCC. |
624 | %{S*:X} substitutes X if one or more switches whose names start |
625 | with -S was given to GCC. Normally X is substituted only |
626 | once, no matter how many such switches appeared. However, |
627 | if %* appears somewhere in X, then X will be substituted |
628 | once for each matching switch, with the %* replaced by the |
629 | part of that switch that matched the '*'. A space will be |
630 | appended after the last substition unless there is more |
631 | text in current sequence. |
632 | %{.S:X} substitutes X, if processing a file with suffix S. |
633 | %{!.S:X} substitutes X, if NOT processing a file with suffix S. |
634 | %{,S:X} substitutes X, if processing a file which will use spec S. |
635 | %{!,S:X} substitutes X, if NOT processing a file which will use spec S. |
636 | |
637 | %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be |
638 | combined with '!', '.', ',', and '*' as above binding stronger |
639 | than the OR. |
640 | If %* appears in X, all of the alternatives must be starred, and |
641 | only the first matching alternative is substituted. |
642 | %{%:function(args):X} |
643 | Call function named FUNCTION with args ARGS. If the function |
644 | returns non-NULL, then X is substituted, if it returns |
645 | NULL, it isn't substituted. |
646 | %{S:X; if S was given to GCC, substitutes X; |
647 | T:Y; else if T was given to GCC, substitutes Y; |
648 | :D} else substitutes D. There can be as many clauses as you need. |
649 | This may be combined with '.', '!', ',', '|', and '*' as above. |
650 | |
651 | %(Spec) processes a specification defined in a specs file as *Spec: |
652 | |
653 | The switch matching text S in a %{S}, %{S:X}, or similar construct can use |
654 | a backslash to ignore the special meaning of the character following it, |
655 | thus allowing literal matching of a character that is otherwise specially |
656 | treated. For example, %{std=iso9899\:1999:X} substitutes X if the |
657 | -std=iso9899:1999 option is given. |
658 | |
659 | The conditional text X in a %{S:X} or similar construct may contain |
660 | other nested % constructs or spaces, or even newlines. They are |
661 | processed as usual, as described above. Trailing white space in X is |
662 | ignored. White space may also appear anywhere on the left side of the |
663 | colon in these constructs, except between . or * and the corresponding |
664 | word. |
665 | |
666 | The -O, -f, -g, -m, and -W switches are handled specifically in these |
667 | constructs. If another value of -O or the negated form of a -f, -m, or |
668 | -W switch is found later in the command line, the earlier switch |
669 | value is ignored, except with {S*} where S is just one letter; this |
670 | passes all matching options. |
671 | |
672 | The character | at the beginning of the predicate text is used to indicate |
673 | that a command should be piped to the following command, but only if -pipe |
674 | is specified. |
675 | |
676 | Note that it is built into GCC which switches take arguments and which |
677 | do not. You might think it would be useful to generalize this to |
678 | allow each compiler's spec to say which switches take arguments. But |
679 | this cannot be done in a consistent fashion. GCC cannot even decide |
680 | which input files have been specified without knowing which switches |
681 | take arguments, and it must know which input files to compile in order |
682 | to tell which compilers to run. |
683 | |
684 | GCC also knows implicitly that arguments starting in `-l' are to be |
685 | treated as compiler output files, and passed to the linker in their |
686 | proper position among the other output files. */ |
687 | |
688 | /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */ |
689 | |
690 | /* config.h can define ASM_SPEC to provide extra args to the assembler |
691 | or extra switch-translations. */ |
692 | #ifndef ASM_SPEC |
693 | #define ASM_SPEC "" |
694 | #endif |
695 | |
696 | /* config.h can define ASM_FINAL_SPEC to run a post processor after |
697 | the assembler has run. */ |
698 | #ifndef ASM_FINAL_SPEC |
699 | #define ASM_FINAL_SPEC \ |
700 | "%{gsplit-dwarf: \n\ |
701 | objcopy --extract-dwo \ |
702 | %{c:%{o*:%*}%{!o*:%w%b%O}}%{!c:%U%O} \ |
703 | %b.dwo \n\ |
704 | objcopy --strip-dwo \ |
705 | %{c:%{o*:%*}%{!o*:%w%b%O}}%{!c:%U%O} \ |
706 | }" |
707 | #endif |
708 | |
709 | /* config.h can define CPP_SPEC to provide extra args to the C preprocessor |
710 | or extra switch-translations. */ |
711 | #ifndef CPP_SPEC |
712 | #define CPP_SPEC "" |
713 | #endif |
714 | |
715 | /* Operating systems can define OS_CC1_SPEC to provide extra args to cc1 and |
716 | cc1plus or extra switch-translations. The OS_CC1_SPEC is appended |
717 | to CC1_SPEC in the initialization of cc1_spec. */ |
718 | #ifndef OS_CC1_SPEC |
719 | #define OS_CC1_SPEC "" |
720 | #endif |
721 | |
722 | /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus |
723 | or extra switch-translations. */ |
724 | #ifndef CC1_SPEC |
725 | #define CC1_SPEC "" |
726 | #endif |
727 | |
728 | /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus |
729 | or extra switch-translations. */ |
730 | #ifndef CC1PLUS_SPEC |
731 | #define CC1PLUS_SPEC "" |
732 | #endif |
733 | |
734 | /* config.h can define LINK_SPEC to provide extra args to the linker |
735 | or extra switch-translations. */ |
736 | #ifndef LINK_SPEC |
737 | #define LINK_SPEC "" |
738 | #endif |
739 | |
740 | /* config.h can define LIB_SPEC to override the default libraries. */ |
741 | #ifndef LIB_SPEC |
742 | #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}" |
743 | #endif |
744 | |
745 | /* When using -fsplit-stack we need to wrap pthread_create, in order |
746 | to initialize the stack guard. We always use wrapping, rather than |
747 | shared library ordering, and we keep the wrapper function in |
748 | libgcc. This is not yet a real spec, though it could become one; |
749 | it is currently just stuffed into LINK_SPEC. FIXME: This wrapping |
750 | only works with GNU ld and gold. */ |
751 | #ifdef HAVE_GOLD_NON_DEFAULT_SPLIT_STACK |
752 | #define STACK_SPLIT_SPEC " %{fsplit-stack: -fuse-ld=gold --wrap=pthread_create}" |
753 | #else |
754 | #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}" |
755 | #endif |
756 | |
757 | #ifndef LIBASAN_SPEC |
758 | #define STATIC_LIBASAN_LIBS \ |
759 | " %{static-libasan|static:%:include(libsanitizer.spec)%(link_libasan)}" |
760 | #ifdef LIBASAN_EARLY_SPEC |
761 | #define LIBASAN_SPEC STATIC_LIBASAN_LIBS |
762 | #elif defined(HAVE_LD_STATIC_DYNAMIC) |
763 | #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \ |
764 | "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \ |
765 | STATIC_LIBASAN_LIBS |
766 | #else |
767 | #define LIBASAN_SPEC "-lasan" STATIC_LIBASAN_LIBS |
768 | #endif |
769 | #endif |
770 | |
771 | #ifndef LIBASAN_EARLY_SPEC |
772 | #define LIBASAN_EARLY_SPEC "" |
773 | #endif |
774 | |
775 | #ifndef LIBHWASAN_SPEC |
776 | #define STATIC_LIBHWASAN_LIBS \ |
777 | " %{static-libhwasan|static:%:include(libsanitizer.spec)%(link_libhwasan)}" |
778 | #ifdef LIBHWASAN_EARLY_SPEC |
779 | #define LIBHWASAN_SPEC STATIC_LIBHWASAN_LIBS |
780 | #elif defined(HAVE_LD_STATIC_DYNAMIC) |
781 | #define LIBHWASAN_SPEC "%{static-libhwasan:" LD_STATIC_OPTION \ |
782 | "} -lhwasan %{static-libhwasan:" LD_DYNAMIC_OPTION "}" \ |
783 | STATIC_LIBHWASAN_LIBS |
784 | #else |
785 | #define LIBHWASAN_SPEC "-lhwasan" STATIC_LIBHWASAN_LIBS |
786 | #endif |
787 | #endif |
788 | |
789 | #ifndef LIBHWASAN_EARLY_SPEC |
790 | #define LIBHWASAN_EARLY_SPEC "" |
791 | #endif |
792 | |
793 | #ifndef LIBTSAN_SPEC |
794 | #define STATIC_LIBTSAN_LIBS \ |
795 | " %{static-libtsan|static:%:include(libsanitizer.spec)%(link_libtsan)}" |
796 | #ifdef LIBTSAN_EARLY_SPEC |
797 | #define LIBTSAN_SPEC STATIC_LIBTSAN_LIBS |
798 | #elif defined(HAVE_LD_STATIC_DYNAMIC) |
799 | #define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \ |
800 | "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \ |
801 | STATIC_LIBTSAN_LIBS |
802 | #else |
803 | #define LIBTSAN_SPEC "-ltsan" STATIC_LIBTSAN_LIBS |
804 | #endif |
805 | #endif |
806 | |
807 | #ifndef LIBTSAN_EARLY_SPEC |
808 | #define LIBTSAN_EARLY_SPEC "" |
809 | #endif |
810 | |
811 | #ifndef LIBLSAN_SPEC |
812 | #define STATIC_LIBLSAN_LIBS \ |
813 | " %{static-liblsan|static:%:include(libsanitizer.spec)%(link_liblsan)}" |
814 | #ifdef LIBLSAN_EARLY_SPEC |
815 | #define LIBLSAN_SPEC STATIC_LIBLSAN_LIBS |
816 | #elif defined(HAVE_LD_STATIC_DYNAMIC) |
817 | #define LIBLSAN_SPEC "%{static-liblsan:" LD_STATIC_OPTION \ |
818 | "} -llsan %{static-liblsan:" LD_DYNAMIC_OPTION "}" \ |
819 | STATIC_LIBLSAN_LIBS |
820 | #else |
821 | #define LIBLSAN_SPEC "-llsan" STATIC_LIBLSAN_LIBS |
822 | #endif |
823 | #endif |
824 | |
825 | #ifndef LIBLSAN_EARLY_SPEC |
826 | #define LIBLSAN_EARLY_SPEC "" |
827 | #endif |
828 | |
829 | #ifndef LIBUBSAN_SPEC |
830 | #define STATIC_LIBUBSAN_LIBS \ |
831 | " %{static-libubsan|static:%:include(libsanitizer.spec)%(link_libubsan)}" |
832 | #ifdef HAVE_LD_STATIC_DYNAMIC |
833 | #define LIBUBSAN_SPEC "%{static-libubsan:" LD_STATIC_OPTION \ |
834 | "} -lubsan %{static-libubsan:" LD_DYNAMIC_OPTION "}" \ |
835 | STATIC_LIBUBSAN_LIBS |
836 | #else |
837 | #define LIBUBSAN_SPEC "-lubsan" STATIC_LIBUBSAN_LIBS |
838 | #endif |
839 | #endif |
840 | |
841 | /* Linker options for compressed debug sections. */ |
842 | #if HAVE_LD_COMPRESS_DEBUG == 0 |
843 | /* No linker support. */ |
844 | #define LINK_COMPRESS_DEBUG_SPEC \ |
845 | " %{gz*:%e-gz is not supported in this configuration} " |
846 | #elif HAVE_LD_COMPRESS_DEBUG == 1 |
847 | /* ELF gABI style. */ |
848 | #define LINK_COMPRESS_DEBUG_SPEC \ |
849 | " %{gz|gz=zlib:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \ |
850 | " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \ |
851 | " %{gz=zstd:%e-gz=zstd is not supported in this configuration} " \ |
852 | " %{gz=zlib-gnu:}" /* Ignore silently zlib-gnu option value. */ |
853 | #elif HAVE_LD_COMPRESS_DEBUG == 2 |
854 | /* ELF gABI style and ZSTD. */ |
855 | #define LINK_COMPRESS_DEBUG_SPEC \ |
856 | " %{gz|gz=zlib:" LD_COMPRESS_DEBUG_OPTION "=zlib}" \ |
857 | " %{gz=none:" LD_COMPRESS_DEBUG_OPTION "=none}" \ |
858 | " %{gz=zstd:" LD_COMPRESS_DEBUG_OPTION "=zstd}" \ |
859 | " %{gz=zlib-gnu:}" /* Ignore silently zlib-gnu option value. */ |
860 | #else |
861 | #error Unknown value for HAVE_LD_COMPRESS_DEBUG. |
862 | #endif |
863 | |
864 | /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is |
865 | included. */ |
866 | #ifndef LIBGCC_SPEC |
867 | #if defined(REAL_LIBGCC_SPEC) |
868 | #define LIBGCC_SPEC REAL_LIBGCC_SPEC |
869 | #elif defined(LINK_LIBGCC_SPECIAL_1) |
870 | /* Have gcc do the search for libgcc.a. */ |
871 | #define LIBGCC_SPEC "libgcc.a%s" |
872 | #else |
873 | #define LIBGCC_SPEC "-lgcc" |
874 | #endif |
875 | #endif |
876 | |
877 | /* config.h can define STARTFILE_SPEC to override the default crt0 files. */ |
878 | #ifndef STARTFILE_SPEC |
879 | #define STARTFILE_SPEC \ |
880 | "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}" |
881 | #endif |
882 | |
883 | /* config.h can define ENDFILE_SPEC to override the default crtn files. */ |
884 | #ifndef ENDFILE_SPEC |
885 | #define ENDFILE_SPEC "" |
886 | #endif |
887 | |
888 | #ifndef LINKER_NAME |
889 | #define LINKER_NAME "collect2" |
890 | #endif |
891 | |
892 | #ifdef HAVE_AS_DEBUG_PREFIX_MAP |
893 | #define ASM_MAP " %{ffile-prefix-map=*:--debug-prefix-map %*} %{fdebug-prefix-map=*:--debug-prefix-map %*}" |
894 | #else |
895 | #define ASM_MAP "" |
896 | #endif |
897 | |
898 | /* Assembler options for compressed debug sections. */ |
899 | #if HAVE_LD_COMPRESS_DEBUG == 0 |
900 | /* Reject if the linker cannot write compressed debug sections. */ |
901 | #define ASM_COMPRESS_DEBUG_SPEC \ |
902 | " %{gz*:%e-gz is not supported in this configuration} " |
903 | #else /* HAVE_LD_COMPRESS_DEBUG >= 1 */ |
904 | #if HAVE_AS_COMPRESS_DEBUG == 0 |
905 | /* No assembler support. Ignore silently. */ |
906 | #define ASM_COMPRESS_DEBUG_SPEC \ |
907 | " %{gz*:} " |
908 | #elif HAVE_AS_COMPRESS_DEBUG == 1 |
909 | /* ELF gABI style. */ |
910 | #define ASM_COMPRESS_DEBUG_SPEC \ |
911 | " %{gz|gz=zlib:" AS_COMPRESS_DEBUG_OPTION "=zlib}" \ |
912 | " %{gz=none:" AS_COMPRESS_DEBUG_OPTION "=none}" \ |
913 | " %{gz=zlib-gnu:}" /* Ignore silently zlib-gnu option value. */ |
914 | #elif HAVE_AS_COMPRESS_DEBUG == 2 |
915 | /* ELF gABI style and ZSTD. */ |
916 | #define ASM_COMPRESS_DEBUG_SPEC \ |
917 | " %{gz|gz=zlib:" AS_COMPRESS_DEBUG_OPTION "=zlib}" \ |
918 | " %{gz=none:" AS_COMPRESS_DEBUG_OPTION "=none}" \ |
919 | " %{gz=zstd:" AS_COMPRESS_DEBUG_OPTION "=zstd}" \ |
920 | " %{gz=zlib-gnu:}" /* Ignore silently zlib-gnu option value. */ |
921 | #else |
922 | #error Unknown value for HAVE_AS_COMPRESS_DEBUG. |
923 | #endif |
924 | #endif /* HAVE_LD_COMPRESS_DEBUG >= 1 */ |
925 | |
926 | /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g' |
927 | to the assembler, when compiling assembly sources only. */ |
928 | #ifndef ASM_DEBUG_SPEC |
929 | # if defined(HAVE_AS_GDWARF_5_DEBUG_FLAG) && defined(HAVE_AS_WORKING_DWARF_N_FLAG) |
930 | /* If --gdwarf-N is supported and as can handle even compiler generated |
931 | .debug_line with it, supply --gdwarf-N in ASM_DEBUG_OPTION_SPEC rather |
932 | than in ASM_DEBUG_SPEC, so that it applies to both .s and .c etc. |
933 | compilations. */ |
934 | # define ASM_DEBUG_DWARF_OPTION "" |
935 | # elif defined(HAVE_AS_GDWARF_5_DEBUG_FLAG) && !defined(HAVE_LD_BROKEN_PE_DWARF5) |
936 | # define ASM_DEBUG_DWARF_OPTION "%{%:dwarf-version-gt(4):--gdwarf-5;" \ |
937 | "%:dwarf-version-gt(3):--gdwarf-4;" \ |
938 | "%:dwarf-version-gt(2):--gdwarf-3;" \ |
939 | ":--gdwarf2}" |
940 | # else |
941 | # define ASM_DEBUG_DWARF_OPTION "--gdwarf2" |
942 | # endif |
943 | # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) |
944 | # define ASM_DEBUG_SPEC "%{g*:%{%:debug-level-gt(0):" \ |
945 | ASM_DEBUG_DWARF_OPTION "}}" ASM_MAP |
946 | # endif |
947 | # endif |
948 | #ifndef ASM_DEBUG_SPEC |
949 | # define ASM_DEBUG_SPEC "" |
950 | #endif |
951 | |
952 | /* Define ASM_DEBUG_OPTION_SPEC to be a spec suitable for translating '-g' |
953 | to the assembler when compiling all sources. */ |
954 | #ifndef ASM_DEBUG_OPTION_SPEC |
955 | # if defined(HAVE_AS_GDWARF_5_DEBUG_FLAG) && defined(HAVE_AS_WORKING_DWARF_N_FLAG) |
956 | # define ASM_DEBUG_OPTION_DWARF_OPT \ |
957 | "%{%:dwarf-version-gt(4):--gdwarf-5 ;" \ |
958 | "%:dwarf-version-gt(3):--gdwarf-4 ;" \ |
959 | "%:dwarf-version-gt(2):--gdwarf-3 ;" \ |
960 | ":--gdwarf2 }" |
961 | # if defined(DWARF2_DEBUGGING_INFO) |
962 | # define ASM_DEBUG_OPTION_SPEC "%{g*:%{%:debug-level-gt(0):" \ |
963 | ASM_DEBUG_OPTION_DWARF_OPT "}}" |
964 | # endif |
965 | # endif |
966 | #endif |
967 | #ifndef ASM_DEBUG_OPTION_SPEC |
968 | # define ASM_DEBUG_OPTION_SPEC "" |
969 | #endif |
970 | |
971 | /* Here is the spec for running the linker, after compiling all files. */ |
972 | |
973 | /* This is overridable by the target in case they need to specify the |
974 | -lgcc and -lc order specially, yet not require them to override all |
975 | of LINK_COMMAND_SPEC. */ |
976 | #ifndef LINK_GCC_C_SEQUENCE_SPEC |
977 | #define LINK_GCC_C_SEQUENCE_SPEC "%G %{!nolibc:%L %G}" |
978 | #endif |
979 | |
980 | #ifndef LINK_SSP_SPEC |
981 | #ifdef TARGET_LIBC_PROVIDES_SSP |
982 | #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \ |
983 | "|fstack-protector-strong|fstack-protector-explicit:}" |
984 | #else |
985 | #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \ |
986 | "|fstack-protector-strong|fstack-protector-explicit" \ |
987 | ":-lssp_nonshared -lssp}" |
988 | #endif |
989 | #endif |
990 | |
991 | #ifdef ENABLE_DEFAULT_PIE |
992 | #define PIE_SPEC "!no-pie" |
993 | #define NO_FPIE1_SPEC "fno-pie" |
994 | #define FPIE1_SPEC NO_FPIE1_SPEC ":;" |
995 | #define NO_FPIE2_SPEC "fno-PIE" |
996 | #define FPIE2_SPEC NO_FPIE2_SPEC ":;" |
997 | #define NO_FPIE_SPEC NO_FPIE1_SPEC "|" NO_FPIE2_SPEC |
998 | #define FPIE_SPEC NO_FPIE_SPEC ":;" |
999 | #define NO_FPIC1_SPEC "fno-pic" |
1000 | #define FPIC1_SPEC NO_FPIC1_SPEC ":;" |
1001 | #define NO_FPIC2_SPEC "fno-PIC" |
1002 | #define FPIC2_SPEC NO_FPIC2_SPEC ":;" |
1003 | #define NO_FPIC_SPEC NO_FPIC1_SPEC "|" NO_FPIC2_SPEC |
1004 | #define FPIC_SPEC NO_FPIC_SPEC ":;" |
1005 | #define NO_FPIE1_AND_FPIC1_SPEC NO_FPIE1_SPEC "|" NO_FPIC1_SPEC |
1006 | #define FPIE1_OR_FPIC1_SPEC NO_FPIE1_AND_FPIC1_SPEC ":;" |
1007 | #define NO_FPIE2_AND_FPIC2_SPEC NO_FPIE2_SPEC "|" NO_FPIC2_SPEC |
1008 | #define FPIE2_OR_FPIC2_SPEC NO_FPIE2_AND_FPIC2_SPEC ":;" |
1009 | #define NO_FPIE_AND_FPIC_SPEC NO_FPIE_SPEC "|" NO_FPIC_SPEC |
1010 | #define FPIE_OR_FPIC_SPEC NO_FPIE_AND_FPIC_SPEC ":;" |
1011 | #else |
1012 | #define PIE_SPEC "pie" |
1013 | #define FPIE1_SPEC "fpie" |
1014 | #define NO_FPIE1_SPEC FPIE1_SPEC ":;" |
1015 | #define FPIE2_SPEC "fPIE" |
1016 | #define NO_FPIE2_SPEC FPIE2_SPEC ":;" |
1017 | #define FPIE_SPEC FPIE1_SPEC "|" FPIE2_SPEC |
1018 | #define NO_FPIE_SPEC FPIE_SPEC ":;" |
1019 | #define FPIC1_SPEC "fpic" |
1020 | #define NO_FPIC1_SPEC FPIC1_SPEC ":;" |
1021 | #define FPIC2_SPEC "fPIC" |
1022 | #define NO_FPIC2_SPEC FPIC2_SPEC ":;" |
1023 | #define FPIC_SPEC FPIC1_SPEC "|" FPIC2_SPEC |
1024 | #define NO_FPIC_SPEC FPIC_SPEC ":;" |
1025 | #define FPIE1_OR_FPIC1_SPEC FPIE1_SPEC "|" FPIC1_SPEC |
1026 | #define NO_FPIE1_AND_FPIC1_SPEC FPIE1_OR_FPIC1_SPEC ":;" |
1027 | #define FPIE2_OR_FPIC2_SPEC FPIE2_SPEC "|" FPIC2_SPEC |
1028 | #define NO_FPIE2_AND_FPIC2_SPEC FPIE1_OR_FPIC2_SPEC ":;" |
1029 | #define FPIE_OR_FPIC_SPEC FPIE_SPEC "|" FPIC_SPEC |
1030 | #define NO_FPIE_AND_FPIC_SPEC FPIE_OR_FPIC_SPEC ":;" |
1031 | #endif |
1032 | |
1033 | #ifndef LINK_PIE_SPEC |
1034 | #ifdef HAVE_LD_PIE |
1035 | #ifndef LD_PIE_SPEC |
1036 | #define LD_PIE_SPEC "-pie" |
1037 | #endif |
1038 | #else |
1039 | #define LD_PIE_SPEC "" |
1040 | #endif |
1041 | #define LINK_PIE_SPEC "%{static|shared|r:;" PIE_SPEC ":" LD_PIE_SPEC "} " |
1042 | #endif |
1043 | |
1044 | #ifndef LINK_BUILDID_SPEC |
1045 | # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID) |
1046 | # define LINK_BUILDID_SPEC "%{!r:--build-id} " |
1047 | # endif |
1048 | #endif |
1049 | |
1050 | #ifndef LTO_PLUGIN_SPEC |
1051 | #define LTO_PLUGIN_SPEC "" |
1052 | #endif |
1053 | |
1054 | /* Conditional to test whether the LTO plugin is used or not. |
1055 | FIXME: For slim LTO we will need to enable plugin unconditionally. This |
1056 | still cause problems with PLUGIN_LD != LD and when plugin is built but |
1057 | not useable. For GCC 4.6 we don't support slim LTO and thus we can enable |
1058 | plugin only when LTO is enabled. We still honor explicit |
1059 | -fuse-linker-plugin if the linker used understands -plugin. */ |
1060 | |
1061 | /* The linker has some plugin support. */ |
1062 | #if HAVE_LTO_PLUGIN > 0 |
1063 | /* The linker used has full plugin support, use LTO plugin by default. */ |
1064 | #if HAVE_LTO_PLUGIN == 2 |
1065 | #define PLUGIN_COND "!fno-use-linker-plugin:%{!fno-lto" |
1066 | #define PLUGIN_COND_CLOSE "}" |
1067 | #else |
1068 | /* The linker used has limited plugin support, use LTO plugin with explicit |
1069 | -fuse-linker-plugin. */ |
1070 | #define PLUGIN_COND "fuse-linker-plugin" |
1071 | #define PLUGIN_COND_CLOSE "" |
1072 | #endif |
1073 | #define LINK_PLUGIN_SPEC \ |
1074 | "%{" PLUGIN_COND": \ |
1075 | -plugin %(linker_plugin_file) \ |
1076 | -plugin-opt=%(lto_wrapper) \ |
1077 | -plugin-opt=-fresolution=%u.res \ |
1078 | " LTO_PLUGIN_SPEC "\ |
1079 | %{flinker-output=*:-plugin-opt=-linker-output-known} \ |
1080 | %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \ |
1081 | }" PLUGIN_COND_CLOSE |
1082 | #else |
1083 | /* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */ |
1084 | #define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\ |
1085 | %e-fuse-linker-plugin is not supported in this configuration}" |
1086 | #endif |
1087 | |
1088 | /* Linker command line options for -fsanitize= early on the command line. */ |
1089 | #ifndef SANITIZER_EARLY_SPEC |
1090 | #define SANITIZER_EARLY_SPEC "\ |
1091 | %{!nostdlib:%{!r:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_EARLY_SPEC "} \ |
1092 | %{%:sanitize(hwaddress):" LIBHWASAN_EARLY_SPEC "} \ |
1093 | %{%:sanitize(thread):" LIBTSAN_EARLY_SPEC "} \ |
1094 | %{%:sanitize(leak):" LIBLSAN_EARLY_SPEC "}}}}" |
1095 | #endif |
1096 | |
1097 | /* Linker command line options for -fsanitize= late on the command line. */ |
1098 | #ifndef SANITIZER_SPEC |
1099 | #define SANITIZER_SPEC "\ |
1100 | %{!nostdlib:%{!r:%{!nodefaultlibs:%{%:sanitize(address):" LIBASAN_SPEC "\ |
1101 | %{static:%ecannot specify -static with -fsanitize=address}}\ |
1102 | %{%:sanitize(hwaddress):" LIBHWASAN_SPEC "\ |
1103 | %{static:%ecannot specify -static with -fsanitize=hwaddress}}\ |
1104 | %{%:sanitize(thread):" LIBTSAN_SPEC "\ |
1105 | %{static:%ecannot specify -static with -fsanitize=thread}}\ |
1106 | %{%:sanitize(undefined):" LIBUBSAN_SPEC "}\ |
1107 | %{%:sanitize(leak):" LIBLSAN_SPEC "}}}}" |
1108 | #endif |
1109 | |
1110 | #ifndef POST_LINK_SPEC |
1111 | #define POST_LINK_SPEC "" |
1112 | #endif |
1113 | |
1114 | /* This is the spec to use, once the code for creating the vtable |
1115 | verification runtime library, libvtv.so, has been created. Currently |
1116 | the vtable verification runtime functions are in libstdc++, so we use |
1117 | the spec just below this one. */ |
1118 | #ifndef VTABLE_VERIFICATION_SPEC |
1119 | #if ENABLE_VTABLE_VERIFY |
1120 | #define VTABLE_VERIFICATION_SPEC "\ |
1121 | %{!nostdlib:%{!r:%{fvtable-verify=std: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}\ |
1122 | %{fvtable-verify=preinit: -lvtv -u_vtable_map_vars_start -u_vtable_map_vars_end}}}" |
1123 | #else |
1124 | #define VTABLE_VERIFICATION_SPEC "\ |
1125 | %{fvtable-verify=none:} \ |
1126 | %{fvtable-verify=std: \ |
1127 | %e-fvtable-verify=std is not supported in this configuration} \ |
1128 | %{fvtable-verify=preinit: \ |
1129 | %e-fvtable-verify=preinit is not supported in this configuration}" |
1130 | #endif |
1131 | #endif |
1132 | |
1133 | /* -u* was put back because both BSD and SysV seem to support it. */ |
1134 | /* %{static|no-pie|static-pie:} simply prevents an error message: |
1135 | 1. If the target machine doesn't handle -static. |
1136 | 2. If PIE isn't enabled by default. |
1137 | 3. If the target machine doesn't handle -static-pie. |
1138 | */ |
1139 | /* We want %{T*} after %{L*} and %D so that it can be used to specify linker |
1140 | scripts which exist in user specified directories, or in standard |
1141 | directories. */ |
1142 | /* We pass any -flto flags on to the linker, which is expected |
1143 | to understand them. In practice, this means it had better be collect2. */ |
1144 | /* %{e*} includes -export-dynamic; see comment in common.opt. */ |
1145 | #ifndef LINK_COMMAND_SPEC |
1146 | #define LINK_COMMAND_SPEC "\ |
1147 | %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\ |
1148 | %(linker) " \ |
1149 | LINK_PLUGIN_SPEC \ |
1150 | "%{flto|flto=*:%<fcompare-debug*} \ |
1151 | %{flto} %{fno-lto} %{flto=*} %l " LINK_PIE_SPEC \ |
1152 | "%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \ |
1153 | "%X %{o*} %{e*} %{N} %{n} %{r}\ |
1154 | %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!r:%{!nostartfiles:%S}}} \ |
1155 | %{static|no-pie|static-pie:} %@{L*} %(link_libgcc) " \ |
1156 | VTABLE_VERIFICATION_SPEC " " SANITIZER_EARLY_SPEC " %o "" \ |
1157 | %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\ |
1158 | %:include(libgomp.spec)%(link_gomp)}\ |
1159 | %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\ |
1160 | " STACK_SPLIT_SPEC "\ |
1161 | %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \ |
1162 | %{!nostdlib:%{!r:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}}\ |
1163 | %{!nostdlib:%{!r:%{!nostartfiles:%E}}} %{T*} \n%(post_link) }}}}}}" |
1164 | #endif |
1165 | |
1166 | #ifndef LINK_LIBGCC_SPEC |
1167 | /* Generate -L options for startfile prefix list. */ |
1168 | # define LINK_LIBGCC_SPEC "%D" |
1169 | #endif |
1170 | |
1171 | #ifndef STARTFILE_PREFIX_SPEC |
1172 | # define STARTFILE_PREFIX_SPEC "" |
1173 | #endif |
1174 | |
1175 | #ifndef SYSROOT_SPEC |
1176 | # define SYSROOT_SPEC "--sysroot=%R" |
1177 | #endif |
1178 | |
1179 | #ifndef SYSROOT_SUFFIX_SPEC |
1180 | # define SYSROOT_SUFFIX_SPEC "" |
1181 | #endif |
1182 | |
1183 | #ifndef SYSROOT_HEADERS_SUFFIX_SPEC |
1184 | # define "" |
1185 | #endif |
1186 | |
1187 | #ifndef RUNPATH_OPTION |
1188 | # define RUNPATH_OPTION "-rpath" |
1189 | #endif |
1190 | |
1191 | static const char *asm_debug = ASM_DEBUG_SPEC; |
1192 | static const char *asm_debug_option = ASM_DEBUG_OPTION_SPEC; |
1193 | static const char *cpp_spec = CPP_SPEC; |
1194 | static const char *cc1_spec = CC1_SPEC OS_CC1_SPEC; |
1195 | static const char *cc1plus_spec = CC1PLUS_SPEC; |
1196 | static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC; |
1197 | static const char *link_ssp_spec = LINK_SSP_SPEC; |
1198 | static const char *asm_spec = ASM_SPEC; |
1199 | static const char *asm_final_spec = ASM_FINAL_SPEC; |
1200 | static const char *link_spec = LINK_SPEC; |
1201 | static const char *lib_spec = LIB_SPEC; |
1202 | static const char *link_gomp_spec = "" ; |
1203 | static const char *libgcc_spec = LIBGCC_SPEC; |
1204 | static const char *endfile_spec = ENDFILE_SPEC; |
1205 | static const char *startfile_spec = STARTFILE_SPEC; |
1206 | static const char *linker_name_spec = LINKER_NAME; |
1207 | static const char *linker_plugin_file_spec = "" ; |
1208 | static const char *lto_wrapper_spec = "" ; |
1209 | static const char *lto_gcc_spec = "" ; |
1210 | static const char *post_link_spec = POST_LINK_SPEC; |
1211 | static const char *link_command_spec = LINK_COMMAND_SPEC; |
1212 | static const char *link_libgcc_spec = LINK_LIBGCC_SPEC; |
1213 | static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC; |
1214 | static const char *sysroot_spec = SYSROOT_SPEC; |
1215 | static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC; |
1216 | static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC; |
1217 | static const char *self_spec = "" ; |
1218 | |
1219 | /* Standard options to cpp, cc1, and as, to reduce duplication in specs. |
1220 | There should be no need to override these in target dependent files, |
1221 | but we need to copy them to the specs file so that newer versions |
1222 | of the GCC driver can correctly drive older tool chains with the |
1223 | appropriate -B options. */ |
1224 | |
1225 | /* When cpplib handles traditional preprocessing, get rid of this, and |
1226 | call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so |
1227 | that we default the front end language better. */ |
1228 | static const char *trad_capable_cpp = |
1229 | "cc1 -E %{traditional|traditional-cpp:-traditional-cpp}" ; |
1230 | |
1231 | /* We don't wrap .d files in %W{} since a missing .d file, and |
1232 | therefore no dependency entry, confuses make into thinking a .o |
1233 | file that happens to exist is up-to-date. */ |
1234 | static const char *cpp_unique_options = |
1235 | "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %@{I*&F*} %{P} %I\ |
1236 | %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\ |
1237 | %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\ |
1238 | %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\ |
1239 | %{Mmodules} %{Mno-modules}\ |
1240 | %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\ |
1241 | %{remap} %{%:debug-level-gt(2):-dD}\ |
1242 | %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\ |
1243 | %{H} %C %{D*&U*&A*} %{i*} %Z %i\ |
1244 | %{E|M|MM:%W{o*}}\ |
1245 | %{fdeps-format=*:%{!fdeps-file=*:-fdeps-file=%:join(%{!o:%b.ddi}%{o*:%.ddi%*})}}\ |
1246 | %{fdeps-format=*:%{!fdeps-target=*:-fdeps-target=%:join(%{!o:%b.o}%{o*:%.o%*})}}" ; |
1247 | |
1248 | /* This contains cpp options which are common with cc1_options and are passed |
1249 | only when preprocessing only to avoid duplication. We pass the cc1 spec |
1250 | options to the preprocessor so that it the cc1 spec may manipulate |
1251 | options used to set target flags. Those special target flags settings may |
1252 | in turn cause preprocessor symbols to be defined specially. */ |
1253 | static const char *cpp_options = |
1254 | "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\ |
1255 | %{f*} %{g*:%{%:debug-level-gt(0):%{g*}\ |
1256 | %{!fno-working-directory:-fworking-directory}}} %{O*}\ |
1257 | %{undef} %{save-temps*:-fpch-preprocess}" ; |
1258 | |
1259 | /* Pass -d* flags, possibly modifying -dumpdir, -dumpbase et al. |
1260 | |
1261 | Make it easy for a language to override the argument for the |
1262 | %:dumps specs function call. */ |
1263 | #define DUMPS_OPTIONS(EXTS) \ |
1264 | "%<dumpdir %<dumpbase %<dumpbase-ext %{d*} %:dumps(" EXTS ")" |
1265 | |
1266 | /* This contains cpp options which are not passed when the preprocessor |
1267 | output will be used by another program. */ |
1268 | static const char *cpp_debug_options = DUMPS_OPTIONS ("" ); |
1269 | |
1270 | /* NB: This is shared amongst all front-ends, except for Ada. */ |
1271 | static const char *cc1_options = |
1272 | "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\ |
1273 | %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\ |
1274 | %1 %{!Q:-quiet} %(cpp_debug_options) %{m*} %{aux-info*}\ |
1275 | %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\ |
1276 | %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\ |
1277 | %{Qn:-fno-ident} %{Qy:} %{-help:--help}\ |
1278 | %{-target-help:--target-help}\ |
1279 | %{-version:--version}\ |
1280 | %{-help=*:--help=%*}\ |
1281 | %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %w%b.s}}}\ |
1282 | %{fsyntax-only:-o %j} %{-param*}\ |
1283 | %{coverage:-fprofile-arcs -ftest-coverage}\ |
1284 | %{fprofile-arcs|fprofile-generate*|coverage:\ |
1285 | %{!fprofile-update=single:\ |
1286 | %{pthread:-fprofile-update=prefer-atomic}}}" ; |
1287 | |
1288 | static const char *asm_options = |
1289 | "%{-target-help:%:print-asm-header()} " |
1290 | #if HAVE_GNU_AS |
1291 | /* If GNU AS is used, then convert -w (no warnings), -I, and -v |
1292 | to the assembler equivalents. */ |
1293 | "%{v} %{w:-W} %{I*} " |
1294 | #endif |
1295 | "%(asm_debug_option)" |
1296 | ASM_COMPRESS_DEBUG_SPEC |
1297 | "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}" ; |
1298 | |
1299 | static const char *invoke_as = |
1300 | #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT |
1301 | "%{!fwpa*:\ |
1302 | %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\ |
1303 | %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\ |
1304 | }" ; |
1305 | #else |
1306 | "%{!fwpa*:\ |
1307 | %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\ |
1308 | %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\ |
1309 | }" ; |
1310 | #endif |
1311 | |
1312 | /* Some compilers have limits on line lengths, and the multilib_select |
1313 | and/or multilib_matches strings can be very long, so we build them at |
1314 | run time. */ |
1315 | static struct obstack multilib_obstack; |
1316 | static const char *multilib_select; |
1317 | static const char *multilib_matches; |
1318 | static const char *multilib_defaults; |
1319 | static const char *multilib_exclusions; |
1320 | static const char *multilib_reuse; |
1321 | |
1322 | /* Check whether a particular argument is a default argument. */ |
1323 | |
1324 | #ifndef MULTILIB_DEFAULTS |
1325 | #define MULTILIB_DEFAULTS { "" } |
1326 | #endif |
1327 | |
1328 | static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS; |
1329 | |
1330 | #ifndef DRIVER_SELF_SPECS |
1331 | #define DRIVER_SELF_SPECS "" |
1332 | #endif |
1333 | |
1334 | /* Linking to libgomp implies pthreads. This is particularly important |
1335 | for targets that use different start files and suchlike. */ |
1336 | #ifndef GOMP_SELF_SPECS |
1337 | #define GOMP_SELF_SPECS \ |
1338 | "%{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1): " \ |
1339 | "-pthread}" |
1340 | #endif |
1341 | |
1342 | /* Likewise for -fgnu-tm. */ |
1343 | #ifndef GTM_SELF_SPECS |
1344 | #define GTM_SELF_SPECS "%{fgnu-tm: -pthread}" |
1345 | #endif |
1346 | |
1347 | static const char *const driver_self_specs[] = { |
1348 | "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns" , |
1349 | DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS, GTM_SELF_SPECS, |
1350 | /* This discards -fmultiflags at the end of self specs processing in the |
1351 | driver, so that it is effectively Ignored, without actually marking it as |
1352 | Ignored, which would get it discarded before self specs could remap it. */ |
1353 | "%<fmultiflags" |
1354 | }; |
1355 | |
1356 | #ifndef OPTION_DEFAULT_SPECS |
1357 | #define OPTION_DEFAULT_SPECS { "", "" } |
1358 | #endif |
1359 | |
1360 | struct default_spec |
1361 | { |
1362 | const char *name; |
1363 | const char *spec; |
1364 | }; |
1365 | |
1366 | static const struct default_spec |
1367 | option_default_specs[] = { OPTION_DEFAULT_SPECS }; |
1368 | |
1369 | struct user_specs |
1370 | { |
1371 | struct user_specs *next; |
1372 | const char *filename; |
1373 | }; |
1374 | |
1375 | static struct user_specs *user_specs_head, *user_specs_tail; |
1376 | |
1377 | |
1378 | /* Record the mapping from file suffixes for compilation specs. */ |
1379 | |
1380 | struct compiler |
1381 | { |
1382 | const char *suffix; /* Use this compiler for input files |
1383 | whose names end in this suffix. */ |
1384 | |
1385 | const char *spec; /* To use this compiler, run this spec. */ |
1386 | |
1387 | const char *cpp_spec; /* If non-NULL, substitute this spec |
1388 | for `%C', rather than the usual |
1389 | cpp_spec. */ |
1390 | int combinable; /* If nonzero, compiler can deal with |
1391 | multiple source files at once (IMA). */ |
1392 | int needs_preprocessing; /* If nonzero, source files need to |
1393 | be run through a preprocessor. */ |
1394 | }; |
1395 | |
1396 | /* Pointer to a vector of `struct compiler' that gives the spec for |
1397 | compiling a file, based on its suffix. |
1398 | A file that does not end in any of these suffixes will be passed |
1399 | unchanged to the loader and nothing else will be done to it. |
1400 | |
1401 | An entry containing two 0s is used to terminate the vector. |
1402 | |
1403 | If multiple entries match a file, the last matching one is used. */ |
1404 | |
1405 | static struct compiler *compilers; |
1406 | |
1407 | /* Number of entries in `compilers', not counting the null terminator. */ |
1408 | |
1409 | static int n_compilers; |
1410 | |
1411 | /* The default list of file name suffixes and their compilation specs. */ |
1412 | |
1413 | static const struct compiler default_compilers[] = |
1414 | { |
1415 | /* Add lists of suffixes of known languages here. If those languages |
1416 | were not present when we built the driver, we will hit these copies |
1417 | and be given a more meaningful error than "file not used since |
1418 | linking is not done". */ |
1419 | {.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}, |
1420 | {.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}, |
1421 | {.suffix: ".mii" , .spec: "#Objective-C++" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1422 | {.suffix: ".cc" , .spec: "#C++" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".cxx" , .spec: "#C++" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1423 | {.suffix: ".cpp" , .spec: "#C++" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".cp" , .spec: "#C++" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1424 | {.suffix: ".c++" , .spec: "#C++" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".C" , .spec: "#C++" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1425 | {.suffix: ".CPP" , .spec: "#C++" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".ii" , .spec: "#C++" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1426 | {.suffix: ".ads" , .spec: "#Ada" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".adb" , .spec: "#Ada" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1427 | {.suffix: ".f" , .spec: "#Fortran" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".F" , .spec: "#Fortran" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1428 | {.suffix: ".for" , .spec: "#Fortran" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".FOR" , .spec: "#Fortran" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1429 | {.suffix: ".ftn" , .spec: "#Fortran" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".FTN" , .spec: "#Fortran" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1430 | {.suffix: ".fpp" , .spec: "#Fortran" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".FPP" , .spec: "#Fortran" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1431 | {.suffix: ".f90" , .spec: "#Fortran" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".F90" , .spec: "#Fortran" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1432 | {.suffix: ".f95" , .spec: "#Fortran" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".F95" , .spec: "#Fortran" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1433 | {.suffix: ".f03" , .spec: "#Fortran" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".F03" , .spec: "#Fortran" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1434 | {.suffix: ".f08" , .spec: "#Fortran" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, {.suffix: ".F08" , .spec: "#Fortran" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1435 | {.suffix: ".r" , .spec: "#Ratfor" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1436 | {.suffix: ".go" , .spec: "#Go" , .cpp_spec: 0, .combinable: 1, .needs_preprocessing: 0}, |
1437 | {.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}, |
1438 | {.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}, |
1439 | /* Next come the entries for C. */ |
1440 | {.suffix: ".c" , .spec: "@c" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 1}, |
1441 | {.suffix: "@c" , |
1442 | /* cc1 has an integrated ISO C preprocessor. We should invoke the |
1443 | external preprocessor if -save-temps is given. */ |
1444 | .spec: "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\ |
1445 | %{!E:%{!M:%{!MM:\ |
1446 | %{traditional:\ |
1447 | %eGNU C no longer supports -traditional without -E}\ |
1448 | %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \ |
1449 | %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\ |
1450 | cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \ |
1451 | %(cc1_options)}\ |
1452 | %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\ |
1453 | cc1 %(cpp_unique_options) %(cc1_options)}}}\ |
1454 | %{!fsyntax-only:%(invoke_as)}}}}" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 1}, |
1455 | {.suffix: "-" , |
1456 | .spec: "%{!E:%e-E or -x required when input is from standard input}\ |
1457 | %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1458 | {.suffix: ".h" , .spec: "@c-header" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1459 | {.suffix: "@c-header" , |
1460 | /* cc1 has an integrated ISO C preprocessor. We should invoke the |
1461 | external preprocessor if -save-temps is given. */ |
1462 | .spec: "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\ |
1463 | %{!E:%{!M:%{!MM:\ |
1464 | %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \ |
1465 | %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\ |
1466 | cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \ |
1467 | %(cc1_options)\ |
1468 | %{!fsyntax-only:%{!S:-o %g.s} \ |
1469 | %{!fdump-ada-spec*:%{!o*:--output-pch %w%i.gch}\ |
1470 | %W{o*:--output-pch %w%*}}%{!S:%V}}}\ |
1471 | %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\ |
1472 | cc1 %(cpp_unique_options) %(cc1_options)\ |
1473 | %{!fsyntax-only:%{!S:-o %g.s} \ |
1474 | %{!fdump-ada-spec*:%{!o*:--output-pch %w%i.gch}\ |
1475 | %W{o*:--output-pch %w%*}}%{!S:%V}}}}}}}}" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1476 | {.suffix: ".i" , .spec: "@cpp-output" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1477 | {.suffix: "@cpp-output" , |
1478 | .spec: "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1479 | {.suffix: ".s" , .spec: "@assembler" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1480 | {.suffix: "@assembler" , |
1481 | .spec: "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1482 | {.suffix: ".sx" , .spec: "@assembler-with-cpp" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1483 | {.suffix: ".S" , .spec: "@assembler-with-cpp" , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1484 | {.suffix: "@assembler-with-cpp" , |
1485 | #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT |
1486 | "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\ |
1487 | %{E|M|MM:%(cpp_debug_options)}\ |
1488 | %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\ |
1489 | as %(asm_debug) %(asm_options) %|.s %A }}}}" |
1490 | #else |
1491 | .spec: "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\ |
1492 | %{E|M|MM:%(cpp_debug_options)}\ |
1493 | %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\ |
1494 | as %(asm_debug) %(asm_options) %m.s %A }}}}" |
1495 | #endif |
1496 | , .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0}, |
1497 | |
1498 | #include "specs.h" |
1499 | /* Mark end of table. */ |
1500 | {.suffix: 0, .spec: 0, .cpp_spec: 0, .combinable: 0, .needs_preprocessing: 0} |
1501 | }; |
1502 | |
1503 | /* Number of elements in default_compilers, not counting the terminator. */ |
1504 | |
1505 | static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1; |
1506 | |
1507 | typedef char *char_p; /* For DEF_VEC_P. */ |
1508 | |
1509 | /* A vector of options to give to the linker. |
1510 | These options are accumulated by %x, |
1511 | and substituted into the linker command with %X. */ |
1512 | static vec<char_p> linker_options; |
1513 | |
1514 | /* A vector of options to give to the assembler. |
1515 | These options are accumulated by -Wa, |
1516 | and substituted into the assembler command with %Y. */ |
1517 | static vec<char_p> assembler_options; |
1518 | |
1519 | /* A vector of options to give to the preprocessor. |
1520 | These options are accumulated by -Wp, |
1521 | and substituted into the preprocessor command with %Z. */ |
1522 | static vec<char_p> preprocessor_options; |
1523 | |
1524 | static char * |
1525 | skip_whitespace (char *p) |
1526 | { |
1527 | while (1) |
1528 | { |
1529 | /* A fully-blank line is a delimiter in the SPEC file and shouldn't |
1530 | be considered whitespace. */ |
1531 | if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n') |
1532 | return p + 1; |
1533 | else if (*p == '\n' || *p == ' ' || *p == '\t') |
1534 | p++; |
1535 | else if (*p == '#') |
1536 | { |
1537 | while (*p != '\n') |
1538 | p++; |
1539 | p++; |
1540 | } |
1541 | else |
1542 | break; |
1543 | } |
1544 | |
1545 | return p; |
1546 | } |
1547 | /* Structures to keep track of prefixes to try when looking for files. */ |
1548 | |
1549 | struct prefix_list |
1550 | { |
1551 | const char *prefix; /* String to prepend to the path. */ |
1552 | struct prefix_list *next; /* Next in linked list. */ |
1553 | int require_machine_suffix; /* Don't use without machine_suffix. */ |
1554 | /* 2 means try both machine_suffix and just_machine_suffix. */ |
1555 | int priority; /* Sort key - priority within list. */ |
1556 | int os_multilib; /* 1 if OS multilib scheme should be used, |
1557 | 0 for GCC multilib scheme. */ |
1558 | }; |
1559 | |
1560 | struct path_prefix |
1561 | { |
1562 | struct prefix_list *plist; /* List of prefixes to try */ |
1563 | int max_len; /* Max length of a prefix in PLIST */ |
1564 | const char *name; /* Name of this list (used in config stuff) */ |
1565 | }; |
1566 | |
1567 | /* List of prefixes to try when looking for executables. */ |
1568 | |
1569 | static struct path_prefix exec_prefixes = { .plist: 0, .max_len: 0, .name: "exec" }; |
1570 | |
1571 | /* List of prefixes to try when looking for startup (crt0) files. */ |
1572 | |
1573 | static struct path_prefix startfile_prefixes = { .plist: 0, .max_len: 0, .name: "startfile" }; |
1574 | |
1575 | /* List of prefixes to try when looking for include files. */ |
1576 | |
1577 | static struct path_prefix include_prefixes = { .plist: 0, .max_len: 0, .name: "include" }; |
1578 | |
1579 | /* Suffix to attach to directories searched for commands. |
1580 | This looks like `MACHINE/VERSION/'. */ |
1581 | |
1582 | static const char *machine_suffix = 0; |
1583 | |
1584 | /* Suffix to attach to directories searched for commands. |
1585 | This is just `MACHINE/'. */ |
1586 | |
1587 | static const char *just_machine_suffix = 0; |
1588 | |
1589 | /* Adjusted value of GCC_EXEC_PREFIX envvar. */ |
1590 | |
1591 | static const char *gcc_exec_prefix; |
1592 | |
1593 | /* Adjusted value of standard_libexec_prefix. */ |
1594 | |
1595 | static const char *gcc_libexec_prefix; |
1596 | |
1597 | /* Default prefixes to attach to command names. */ |
1598 | |
1599 | #ifndef STANDARD_STARTFILE_PREFIX_1 |
1600 | #define STANDARD_STARTFILE_PREFIX_1 "/lib/" |
1601 | #endif |
1602 | #ifndef STANDARD_STARTFILE_PREFIX_2 |
1603 | #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/" |
1604 | #endif |
1605 | |
1606 | #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */ |
1607 | #undef MD_EXEC_PREFIX |
1608 | #undef MD_STARTFILE_PREFIX |
1609 | #undef MD_STARTFILE_PREFIX_1 |
1610 | #endif |
1611 | |
1612 | /* If no prefixes defined, use the null string, which will disable them. */ |
1613 | #ifndef MD_EXEC_PREFIX |
1614 | #define MD_EXEC_PREFIX "" |
1615 | #endif |
1616 | #ifndef MD_STARTFILE_PREFIX |
1617 | #define MD_STARTFILE_PREFIX "" |
1618 | #endif |
1619 | #ifndef MD_STARTFILE_PREFIX_1 |
1620 | #define MD_STARTFILE_PREFIX_1 "" |
1621 | #endif |
1622 | |
1623 | /* These directories are locations set at configure-time based on the |
1624 | --prefix option provided to configure. Their initializers are |
1625 | defined in Makefile.in. These paths are not *directly* used when |
1626 | gcc_exec_prefix is set because, in that case, we know where the |
1627 | compiler has been installed, and use paths relative to that |
1628 | location instead. */ |
1629 | static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX; |
1630 | static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX; |
1631 | static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX; |
1632 | static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX; |
1633 | |
1634 | /* For native compilers, these are well-known paths containing |
1635 | components that may be provided by the system. For cross |
1636 | compilers, these paths are not used. */ |
1637 | static const char *md_exec_prefix = MD_EXEC_PREFIX; |
1638 | static const char *md_startfile_prefix = MD_STARTFILE_PREFIX; |
1639 | static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1; |
1640 | static const char *const standard_startfile_prefix_1 |
1641 | = STANDARD_STARTFILE_PREFIX_1; |
1642 | static const char *const standard_startfile_prefix_2 |
1643 | = STANDARD_STARTFILE_PREFIX_2; |
1644 | |
1645 | /* A relative path to be used in finding the location of tools |
1646 | relative to the driver. */ |
1647 | static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX; |
1648 | |
1649 | /* A prefix to be used when this is an accelerator compiler. */ |
1650 | static const char *const accel_dir_suffix = ACCEL_DIR_SUFFIX; |
1651 | |
1652 | /* Subdirectory to use for locating libraries. Set by |
1653 | set_multilib_dir based on the compilation options. */ |
1654 | |
1655 | static const char *multilib_dir; |
1656 | |
1657 | /* Subdirectory to use for locating libraries in OS conventions. Set by |
1658 | set_multilib_dir based on the compilation options. */ |
1659 | |
1660 | static const char *multilib_os_dir; |
1661 | |
1662 | /* Subdirectory to use for locating libraries in multiarch conventions. Set by |
1663 | set_multilib_dir based on the compilation options. */ |
1664 | |
1665 | static const char *multiarch_dir; |
1666 | |
1667 | /* Structure to keep track of the specs that have been defined so far. |
1668 | These are accessed using %(specname) in a compiler or link |
1669 | spec. */ |
1670 | |
1671 | struct spec_list |
1672 | { |
1673 | /* The following 2 fields must be first */ |
1674 | /* to allow EXTRA_SPECS to be initialized */ |
1675 | const char *name; /* name of the spec. */ |
1676 | const char *ptr; /* available ptr if no static pointer */ |
1677 | |
1678 | /* The following fields are not initialized */ |
1679 | /* by EXTRA_SPECS */ |
1680 | const char **ptr_spec; /* pointer to the spec itself. */ |
1681 | struct spec_list *next; /* Next spec in linked list. */ |
1682 | int name_len; /* length of the name */ |
1683 | bool user_p; /* whether string come from file spec. */ |
1684 | bool alloc_p; /* whether string was allocated */ |
1685 | const char *default_ptr; /* The default value of *ptr_spec. */ |
1686 | }; |
1687 | |
1688 | #define INIT_STATIC_SPEC(NAME,PTR) \ |
1689 | { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false, \ |
1690 | *PTR } |
1691 | |
1692 | /* List of statically defined specs. */ |
1693 | static struct spec_list static_specs[] = |
1694 | { |
1695 | INIT_STATIC_SPEC ("asm" , &asm_spec), |
1696 | INIT_STATIC_SPEC ("asm_debug" , &asm_debug), |
1697 | INIT_STATIC_SPEC ("asm_debug_option" , &asm_debug_option), |
1698 | INIT_STATIC_SPEC ("asm_final" , &asm_final_spec), |
1699 | INIT_STATIC_SPEC ("asm_options" , &asm_options), |
1700 | INIT_STATIC_SPEC ("invoke_as" , &invoke_as), |
1701 | INIT_STATIC_SPEC ("cpp" , &cpp_spec), |
1702 | INIT_STATIC_SPEC ("cpp_options" , &cpp_options), |
1703 | INIT_STATIC_SPEC ("cpp_debug_options" , &cpp_debug_options), |
1704 | INIT_STATIC_SPEC ("cpp_unique_options" , &cpp_unique_options), |
1705 | INIT_STATIC_SPEC ("trad_capable_cpp" , &trad_capable_cpp), |
1706 | INIT_STATIC_SPEC ("cc1" , &cc1_spec), |
1707 | INIT_STATIC_SPEC ("cc1_options" , &cc1_options), |
1708 | INIT_STATIC_SPEC ("cc1plus" , &cc1plus_spec), |
1709 | INIT_STATIC_SPEC ("link_gcc_c_sequence" , &link_gcc_c_sequence_spec), |
1710 | INIT_STATIC_SPEC ("link_ssp" , &link_ssp_spec), |
1711 | INIT_STATIC_SPEC ("endfile" , &endfile_spec), |
1712 | INIT_STATIC_SPEC ("link" , &link_spec), |
1713 | INIT_STATIC_SPEC ("lib" , &lib_spec), |
1714 | INIT_STATIC_SPEC ("link_gomp" , &link_gomp_spec), |
1715 | INIT_STATIC_SPEC ("libgcc" , &libgcc_spec), |
1716 | INIT_STATIC_SPEC ("startfile" , &startfile_spec), |
1717 | INIT_STATIC_SPEC ("cross_compile" , &cross_compile), |
1718 | INIT_STATIC_SPEC ("version" , &compiler_version), |
1719 | INIT_STATIC_SPEC ("multilib" , &multilib_select), |
1720 | INIT_STATIC_SPEC ("multilib_defaults" , &multilib_defaults), |
1721 | INIT_STATIC_SPEC ("multilib_extra" , &multilib_extra), |
1722 | INIT_STATIC_SPEC ("multilib_matches" , &multilib_matches), |
1723 | INIT_STATIC_SPEC ("multilib_exclusions" , &multilib_exclusions), |
1724 | INIT_STATIC_SPEC ("multilib_options" , &multilib_options), |
1725 | INIT_STATIC_SPEC ("multilib_reuse" , &multilib_reuse), |
1726 | INIT_STATIC_SPEC ("linker" , &linker_name_spec), |
1727 | INIT_STATIC_SPEC ("linker_plugin_file" , &linker_plugin_file_spec), |
1728 | INIT_STATIC_SPEC ("lto_wrapper" , <o_wrapper_spec), |
1729 | INIT_STATIC_SPEC ("lto_gcc" , <o_gcc_spec), |
1730 | INIT_STATIC_SPEC ("post_link" , &post_link_spec), |
1731 | INIT_STATIC_SPEC ("link_libgcc" , &link_libgcc_spec), |
1732 | INIT_STATIC_SPEC ("md_exec_prefix" , &md_exec_prefix), |
1733 | INIT_STATIC_SPEC ("md_startfile_prefix" , &md_startfile_prefix), |
1734 | INIT_STATIC_SPEC ("md_startfile_prefix_1" , &md_startfile_prefix_1), |
1735 | INIT_STATIC_SPEC ("startfile_prefix_spec" , &startfile_prefix_spec), |
1736 | INIT_STATIC_SPEC ("sysroot_spec" , &sysroot_spec), |
1737 | INIT_STATIC_SPEC ("sysroot_suffix_spec" , &sysroot_suffix_spec), |
1738 | INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec" , &sysroot_hdrs_suffix_spec), |
1739 | INIT_STATIC_SPEC ("self_spec" , &self_spec), |
1740 | }; |
1741 | |
1742 | #ifdef EXTRA_SPECS /* additional specs needed */ |
1743 | /* Structure to keep track of just the first two args of a spec_list. |
1744 | That is all that the EXTRA_SPECS macro gives us. */ |
1745 | struct spec_list_1 |
1746 | { |
1747 | const char *const name; |
1748 | const char *const ptr; |
1749 | }; |
1750 | |
1751 | static const struct spec_list_1 [] = { EXTRA_SPECS }; |
1752 | static struct spec_list * = (struct spec_list *) 0; |
1753 | #endif |
1754 | |
1755 | /* List of dynamically allocates specs that have been defined so far. */ |
1756 | |
1757 | static struct spec_list *specs = (struct spec_list *) 0; |
1758 | |
1759 | /* List of static spec functions. */ |
1760 | |
1761 | static const struct spec_function static_spec_functions[] = |
1762 | { |
1763 | { .name: "getenv" , .func: getenv_spec_function }, |
1764 | { .name: "if-exists" , .func: if_exists_spec_function }, |
1765 | { .name: "if-exists-else" , .func: if_exists_else_spec_function }, |
1766 | { .name: "if-exists-then-else" , .func: if_exists_then_else_spec_function }, |
1767 | { .name: "sanitize" , .func: sanitize_spec_function }, |
1768 | { .name: "replace-outfile" , .func: replace_outfile_spec_function }, |
1769 | { .name: "remove-outfile" , .func: remove_outfile_spec_function }, |
1770 | { .name: "version-compare" , .func: version_compare_spec_function }, |
1771 | { .name: "include" , .func: include_spec_function }, |
1772 | { .name: "find-file" , .func: find_file_spec_function }, |
1773 | { .name: "find-plugindir" , .func: find_plugindir_spec_function }, |
1774 | { .name: "print-asm-header" , .func: print_asm_header_spec_function }, |
1775 | { .name: "compare-debug-dump-opt" , .func: compare_debug_dump_opt_spec_function }, |
1776 | { .name: "compare-debug-self-opt" , .func: compare_debug_self_opt_spec_function }, |
1777 | { .name: "pass-through-libs" , .func: pass_through_libs_spec_func }, |
1778 | { .name: "dumps" , .func: dumps_spec_func }, |
1779 | { .name: "gt" , .func: greater_than_spec_func }, |
1780 | { .name: "debug-level-gt" , .func: debug_level_greater_than_spec_func }, |
1781 | { .name: "dwarf-version-gt" , .func: dwarf_version_greater_than_spec_func }, |
1782 | { .name: "fortran-preinclude-file" , .func: find_fortran_preinclude_file}, |
1783 | { .name: "join" , .func: join_spec_func}, |
1784 | #ifdef EXTRA_SPEC_FUNCTIONS |
1785 | EXTRA_SPEC_FUNCTIONS |
1786 | #endif |
1787 | { .name: 0, .func: 0 } |
1788 | }; |
1789 | |
1790 | static int processing_spec_function; |
1791 | |
1792 | /* Add appropriate libgcc specs to OBSTACK, taking into account |
1793 | various permutations of -shared-libgcc, -shared, and such. */ |
1794 | |
1795 | #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) |
1796 | |
1797 | #ifndef USE_LD_AS_NEEDED |
1798 | #define USE_LD_AS_NEEDED 0 |
1799 | #endif |
1800 | |
1801 | static void |
1802 | init_gcc_specs (struct obstack *obstack, const char *shared_name, |
1803 | const char *static_name, const char *eh_name) |
1804 | { |
1805 | char *buf; |
1806 | |
1807 | #if USE_LD_AS_NEEDED |
1808 | buf = concat ("%{static|static-libgcc|static-pie:" , static_name, " " , eh_name, "}" |
1809 | "%{!static:%{!static-libgcc:%{!static-pie:" |
1810 | "%{!shared-libgcc:" , |
1811 | static_name, " " LD_AS_NEEDED_OPTION " " , |
1812 | shared_name, " " LD_NO_AS_NEEDED_OPTION |
1813 | "}" |
1814 | "%{shared-libgcc:" , |
1815 | shared_name, "%{!shared: " , static_name, "}" |
1816 | "}}" |
1817 | #else |
1818 | buf = concat ("%{static|static-libgcc:" , static_name, " " , eh_name, "}" |
1819 | "%{!static:%{!static-libgcc:" |
1820 | "%{!shared:" |
1821 | "%{!shared-libgcc:" , static_name, " " , eh_name, "}" |
1822 | "%{shared-libgcc:" , shared_name, " " , static_name, "}" |
1823 | "}" |
1824 | #ifdef LINK_EH_SPEC |
1825 | "%{shared:" |
1826 | "%{shared-libgcc:" , shared_name, "}" |
1827 | "%{!shared-libgcc:" , static_name, "}" |
1828 | "}" |
1829 | #else |
1830 | "%{shared:" , shared_name, "}" |
1831 | #endif |
1832 | #endif |
1833 | "}}" , NULL); |
1834 | |
1835 | obstack_grow (obstack, buf, strlen (buf)); |
1836 | free (ptr: buf); |
1837 | } |
1838 | #endif /* ENABLE_SHARED_LIBGCC */ |
1839 | |
1840 | /* Initialize the specs lookup routines. */ |
1841 | |
1842 | static void |
1843 | init_spec (void) |
1844 | { |
1845 | struct spec_list *next = (struct spec_list *) 0; |
1846 | struct spec_list *sl = (struct spec_list *) 0; |
1847 | int i; |
1848 | |
1849 | if (specs) |
1850 | return; /* Already initialized. */ |
1851 | |
1852 | if (verbose_flag) |
1853 | fnotice (stderr, "Using built-in specs.\n" ); |
1854 | |
1855 | #ifdef EXTRA_SPECS |
1856 | extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1)); |
1857 | |
1858 | for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--) |
1859 | { |
1860 | sl = &extra_specs[i]; |
1861 | sl->name = extra_specs_1[i].name; |
1862 | sl->ptr = extra_specs_1[i].ptr; |
1863 | sl->next = next; |
1864 | sl->name_len = strlen (s: sl->name); |
1865 | sl->ptr_spec = &sl->ptr; |
1866 | gcc_assert (sl->ptr_spec != NULL); |
1867 | sl->default_ptr = sl->ptr; |
1868 | next = sl; |
1869 | } |
1870 | #endif |
1871 | |
1872 | for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--) |
1873 | { |
1874 | sl = &static_specs[i]; |
1875 | sl->next = next; |
1876 | next = sl; |
1877 | } |
1878 | |
1879 | #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) |
1880 | /* ??? If neither -shared-libgcc nor --static-libgcc was |
1881 | seen, then we should be making an educated guess. Some proposed |
1882 | heuristics for ELF include: |
1883 | |
1884 | (1) If "-Wl,--export-dynamic", then it's a fair bet that the |
1885 | program will be doing dynamic loading, which will likely |
1886 | need the shared libgcc. |
1887 | |
1888 | (2) If "-ldl", then it's also a fair bet that we're doing |
1889 | dynamic loading. |
1890 | |
1891 | (3) For each ET_DYN we're linking against (either through -lfoo |
1892 | or /some/path/foo.so), check to see whether it or one of |
1893 | its dependencies depends on a shared libgcc. |
1894 | |
1895 | (4) If "-shared" |
1896 | |
1897 | If the runtime is fixed to look for program headers instead |
1898 | of calling __register_frame_info at all, for each object, |
1899 | use the shared libgcc if any EH symbol referenced. |
1900 | |
1901 | If crtstuff is fixed to not invoke __register_frame_info |
1902 | automatically, for each object, use the shared libgcc if |
1903 | any non-empty unwind section found. |
1904 | |
1905 | Doing any of this probably requires invoking an external program to |
1906 | do the actual object file scanning. */ |
1907 | { |
1908 | const char *p = libgcc_spec; |
1909 | int in_sep = 1; |
1910 | |
1911 | /* Transform the extant libgcc_spec into one that uses the shared libgcc |
1912 | when given the proper command line arguments. */ |
1913 | while (*p) |
1914 | { |
1915 | if (in_sep && *p == '-' && startswith (str: p, prefix: "-lgcc" )) |
1916 | { |
1917 | init_gcc_specs (obstack: &obstack, |
1918 | shared_name: "-lgcc_s" |
1919 | #ifdef USE_LIBUNWIND_EXCEPTIONS |
1920 | " -lunwind" |
1921 | #endif |
1922 | , |
1923 | static_name: "-lgcc" , |
1924 | eh_name: "-lgcc_eh" |
1925 | #ifdef USE_LIBUNWIND_EXCEPTIONS |
1926 | # ifdef HAVE_LD_STATIC_DYNAMIC |
1927 | " %{!static:%{!static-pie:" LD_STATIC_OPTION "}} -lunwind" |
1928 | " %{!static:%{!static-pie:" LD_DYNAMIC_OPTION "}}" |
1929 | # else |
1930 | " -lunwind" |
1931 | # endif |
1932 | #endif |
1933 | ); |
1934 | |
1935 | p += 5; |
1936 | in_sep = 0; |
1937 | } |
1938 | else if (in_sep && *p == 'l' && startswith (str: p, prefix: "libgcc.a%s" )) |
1939 | { |
1940 | /* Ug. We don't know shared library extensions. Hope that |
1941 | systems that use this form don't do shared libraries. */ |
1942 | init_gcc_specs (obstack: &obstack, |
1943 | shared_name: "-lgcc_s" , |
1944 | static_name: "libgcc.a%s" , |
1945 | eh_name: "libgcc_eh.a%s" |
1946 | #ifdef USE_LIBUNWIND_EXCEPTIONS |
1947 | " -lunwind" |
1948 | #endif |
1949 | ); |
1950 | p += 10; |
1951 | in_sep = 0; |
1952 | } |
1953 | else |
1954 | { |
1955 | obstack_1grow (&obstack, *p); |
1956 | in_sep = (*p == ' '); |
1957 | p += 1; |
1958 | } |
1959 | } |
1960 | |
1961 | obstack_1grow (&obstack, '\0'); |
1962 | libgcc_spec = XOBFINISH (&obstack, const char *); |
1963 | } |
1964 | #endif |
1965 | #ifdef USE_AS_TRADITIONAL_FORMAT |
1966 | /* Prepend "--traditional-format" to whatever asm_spec we had before. */ |
1967 | { |
1968 | static const char tf[] = "--traditional-format " ; |
1969 | obstack_grow (&obstack, tf, sizeof (tf) - 1); |
1970 | obstack_grow0 (&obstack, asm_spec, strlen (asm_spec)); |
1971 | asm_spec = XOBFINISH (&obstack, const char *); |
1972 | } |
1973 | #endif |
1974 | |
1975 | #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \ |
1976 | defined LINKER_HASH_STYLE |
1977 | # ifdef LINK_BUILDID_SPEC |
1978 | /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */ |
1979 | obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof (LINK_BUILDID_SPEC) - 1); |
1980 | # endif |
1981 | # ifdef LINK_EH_SPEC |
1982 | /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */ |
1983 | obstack_grow (&obstack, LINK_EH_SPEC, sizeof (LINK_EH_SPEC) - 1); |
1984 | # endif |
1985 | # ifdef LINKER_HASH_STYLE |
1986 | /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had |
1987 | before. */ |
1988 | { |
1989 | static const char hash_style[] = "--hash-style=" ; |
1990 | obstack_grow (&obstack, hash_style, sizeof (hash_style) - 1); |
1991 | obstack_grow (&obstack, LINKER_HASH_STYLE, sizeof (LINKER_HASH_STYLE) - 1); |
1992 | obstack_1grow (&obstack, ' '); |
1993 | } |
1994 | # endif |
1995 | obstack_grow0 (&obstack, link_spec, strlen (link_spec)); |
1996 | link_spec = XOBFINISH (&obstack, const char *); |
1997 | #endif |
1998 | |
1999 | specs = sl; |
2000 | } |
2001 | |
2002 | /* Update the entry for SPEC in the static_specs table to point to VALUE, |
2003 | ensuring that we free the previous value if necessary. Set alloc_p for the |
2004 | entry to ALLOC_P: this determines whether we take ownership of VALUE (i.e. |
2005 | whether we need to free it later on). */ |
2006 | static void |
2007 | set_static_spec (const char **spec, const char *value, bool alloc_p) |
2008 | { |
2009 | struct spec_list *sl = NULL; |
2010 | |
2011 | for (unsigned i = 0; i < ARRAY_SIZE (static_specs); i++) |
2012 | { |
2013 | if (static_specs[i].ptr_spec == spec) |
2014 | { |
2015 | sl = static_specs + i; |
2016 | break; |
2017 | } |
2018 | } |
2019 | |
2020 | gcc_assert (sl); |
2021 | |
2022 | if (sl->alloc_p) |
2023 | { |
2024 | const char *old = *spec; |
2025 | free (ptr: const_cast <char *> (old)); |
2026 | } |
2027 | |
2028 | *spec = value; |
2029 | sl->alloc_p = alloc_p; |
2030 | } |
2031 | |
2032 | /* Update a static spec to a new string, taking ownership of that |
2033 | string's memory. */ |
2034 | static void set_static_spec_owned (const char **spec, const char *val) |
2035 | { |
2036 | return set_static_spec (spec, value: val, alloc_p: true); |
2037 | } |
2038 | |
2039 | /* Update a static spec to point to a new value, but don't take |
2040 | ownership of (i.e. don't free) that string. */ |
2041 | static void set_static_spec_shared (const char **spec, const char *val) |
2042 | { |
2043 | return set_static_spec (spec, value: val, alloc_p: false); |
2044 | } |
2045 | |
2046 | |
2047 | /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is |
2048 | removed; If the spec starts with a + then SPEC is added to the end of the |
2049 | current spec. */ |
2050 | |
2051 | static void |
2052 | set_spec (const char *name, const char *spec, bool user_p) |
2053 | { |
2054 | struct spec_list *sl; |
2055 | const char *old_spec; |
2056 | int name_len = strlen (s: name); |
2057 | int i; |
2058 | |
2059 | /* If this is the first call, initialize the statically allocated specs. */ |
2060 | if (!specs) |
2061 | { |
2062 | struct spec_list *next = (struct spec_list *) 0; |
2063 | for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--) |
2064 | { |
2065 | sl = &static_specs[i]; |
2066 | sl->next = next; |
2067 | next = sl; |
2068 | } |
2069 | specs = sl; |
2070 | } |
2071 | |
2072 | /* See if the spec already exists. */ |
2073 | for (sl = specs; sl; sl = sl->next) |
2074 | if (name_len == sl->name_len && !strcmp (s1: sl->name, s2: name)) |
2075 | break; |
2076 | |
2077 | if (!sl) |
2078 | { |
2079 | /* Not found - make it. */ |
2080 | sl = XNEW (struct spec_list); |
2081 | sl->name = xstrdup (name); |
2082 | sl->name_len = name_len; |
2083 | sl->ptr_spec = &sl->ptr; |
2084 | sl->alloc_p = 0; |
2085 | *(sl->ptr_spec) = "" ; |
2086 | sl->next = specs; |
2087 | sl->default_ptr = NULL; |
2088 | specs = sl; |
2089 | } |
2090 | |
2091 | old_spec = *(sl->ptr_spec); |
2092 | *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1])) |
2093 | ? concat (old_spec, spec + 1, NULL) |
2094 | : xstrdup (spec)); |
2095 | |
2096 | #ifdef DEBUG_SPECS |
2097 | if (verbose_flag) |
2098 | fnotice (stderr, "Setting spec %s to '%s'\n\n" , name, *(sl->ptr_spec)); |
2099 | #endif |
2100 | |
2101 | /* Free the old spec. */ |
2102 | if (old_spec && sl->alloc_p) |
2103 | free (CONST_CAST (char *, old_spec)); |
2104 | |
2105 | sl->user_p = user_p; |
2106 | sl->alloc_p = true; |
2107 | } |
2108 | |
2109 | /* Accumulate a command (program name and args), and run it. */ |
2110 | |
2111 | typedef const char *const_char_p; /* For DEF_VEC_P. */ |
2112 | |
2113 | /* Vector of pointers to arguments in the current line of specifications. */ |
2114 | static vec<const_char_p> argbuf; |
2115 | |
2116 | /* Likewise, but for the current @file. */ |
2117 | static vec<const_char_p> at_file_argbuf; |
2118 | |
2119 | /* Whether an @file is currently open. */ |
2120 | static bool in_at_file = false; |
2121 | |
2122 | /* Were the options -c, -S or -E passed. */ |
2123 | static int have_c = 0; |
2124 | |
2125 | /* Was the option -o passed. */ |
2126 | static int have_o = 0; |
2127 | |
2128 | /* Was the option -E passed. */ |
2129 | static int have_E = 0; |
2130 | |
2131 | /* Pointer to output file name passed in with -o. */ |
2132 | static const char *output_file = 0; |
2133 | |
2134 | /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated |
2135 | temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for |
2136 | it here. */ |
2137 | |
2138 | static struct temp_name { |
2139 | const char *suffix; /* suffix associated with the code. */ |
2140 | int length; /* strlen (suffix). */ |
2141 | int unique; /* Indicates whether %g or %u/%U was used. */ |
2142 | const char *filename; /* associated filename. */ |
2143 | int filename_length; /* strlen (filename). */ |
2144 | struct temp_name *next; |
2145 | } *temp_names; |
2146 | |
2147 | /* Number of commands executed so far. */ |
2148 | |
2149 | static int execution_count; |
2150 | |
2151 | /* Number of commands that exited with a signal. */ |
2152 | |
2153 | static int signal_count; |
2154 | |
2155 | /* Allocate the argument vector. */ |
2156 | |
2157 | static void |
2158 | alloc_args (void) |
2159 | { |
2160 | argbuf.create (nelems: 10); |
2161 | at_file_argbuf.create (nelems: 10); |
2162 | } |
2163 | |
2164 | /* Clear out the vector of arguments (after a command is executed). */ |
2165 | |
2166 | static void |
2167 | clear_args (void) |
2168 | { |
2169 | argbuf.truncate (size: 0); |
2170 | at_file_argbuf.truncate (size: 0); |
2171 | } |
2172 | |
2173 | /* Add one argument to the vector at the end. |
2174 | This is done when a space is seen or at the end of the line. |
2175 | If DELETE_ALWAYS is nonzero, the arg is a filename |
2176 | and the file should be deleted eventually. |
2177 | If DELETE_FAILURE is nonzero, the arg is a filename |
2178 | and the file should be deleted if this compilation fails. */ |
2179 | |
2180 | static void |
2181 | store_arg (const char *arg, int delete_always, int delete_failure) |
2182 | { |
2183 | if (in_at_file) |
2184 | at_file_argbuf.safe_push (obj: arg); |
2185 | else |
2186 | argbuf.safe_push (obj: arg); |
2187 | |
2188 | if (delete_always || delete_failure) |
2189 | { |
2190 | const char *p; |
2191 | /* If the temporary file we should delete is specified as |
2192 | part of a joined argument extract the filename. */ |
2193 | if (arg[0] == '-' |
2194 | && (p = strrchr (s: arg, c: '='))) |
2195 | arg = p + 1; |
2196 | record_temp_file (arg, delete_always, delete_failure); |
2197 | } |
2198 | } |
2199 | |
2200 | /* Open a temporary @file into which subsequent arguments will be stored. */ |
2201 | |
2202 | static void |
2203 | open_at_file (void) |
2204 | { |
2205 | if (in_at_file) |
2206 | fatal_error (input_location, "cannot open nested response file" ); |
2207 | else |
2208 | in_at_file = true; |
2209 | } |
2210 | |
2211 | /* Create a temporary @file name. */ |
2212 | |
2213 | static char *make_at_file (void) |
2214 | { |
2215 | static int fileno = 0; |
2216 | char filename[20]; |
2217 | const char *base, *ext; |
2218 | |
2219 | if (!save_temps_flag) |
2220 | return make_temp_file ("" ); |
2221 | |
2222 | base = dumpbase; |
2223 | if (!(base && *base)) |
2224 | base = dumpdir; |
2225 | if (!(base && *base)) |
2226 | base = "a" ; |
2227 | |
2228 | sprintf (s: filename, format: ".args.%d" , fileno++); |
2229 | ext = filename; |
2230 | |
2231 | if (base == dumpdir && dumpdir_trailing_dash_added) |
2232 | ext++; |
2233 | |
2234 | return concat (base, ext, NULL); |
2235 | } |
2236 | |
2237 | /* Close the temporary @file and add @file to the argument list. */ |
2238 | |
2239 | static void |
2240 | close_at_file (void) |
2241 | { |
2242 | if (!in_at_file) |
2243 | fatal_error (input_location, "cannot close nonexistent response file" ); |
2244 | |
2245 | in_at_file = false; |
2246 | |
2247 | const unsigned int n_args = at_file_argbuf.length (); |
2248 | if (n_args == 0) |
2249 | return; |
2250 | |
2251 | char **argv = XALLOCAVEC (char *, n_args + 1); |
2252 | char *temp_file = make_at_file (); |
2253 | char *at_argument = concat ("@" , temp_file, NULL); |
2254 | FILE *f = fopen (filename: temp_file, modes: "w" ); |
2255 | int status; |
2256 | unsigned int i; |
2257 | |
2258 | /* Copy the strings over. */ |
2259 | for (i = 0; i < n_args; i++) |
2260 | argv[i] = CONST_CAST (char *, at_file_argbuf[i]); |
2261 | argv[i] = NULL; |
2262 | |
2263 | at_file_argbuf.truncate (size: 0); |
2264 | |
2265 | if (f == NULL) |
2266 | fatal_error (input_location, "could not open temporary response file %s" , |
2267 | temp_file); |
2268 | |
2269 | status = writeargv (argv, f); |
2270 | |
2271 | if (status) |
2272 | fatal_error (input_location, |
2273 | "could not write to temporary response file %s" , |
2274 | temp_file); |
2275 | |
2276 | status = fclose (stream: f); |
2277 | |
2278 | if (status == EOF) |
2279 | fatal_error (input_location, "could not close temporary response file %s" , |
2280 | temp_file); |
2281 | |
2282 | store_arg (arg: at_argument, delete_always: 0, delete_failure: 0); |
2283 | |
2284 | record_temp_file (temp_file, !save_temps_flag, !save_temps_flag); |
2285 | } |
2286 | |
2287 | /* Load specs from a file name named FILENAME, replacing occurrences of |
2288 | various different types of line-endings, \r\n, \n\r and just \r, with |
2289 | a single \n. */ |
2290 | |
2291 | static char * |
2292 | load_specs (const char *filename) |
2293 | { |
2294 | int desc; |
2295 | int readlen; |
2296 | struct stat statbuf; |
2297 | char *buffer; |
2298 | char *buffer_p; |
2299 | char *specs; |
2300 | char *specs_p; |
2301 | |
2302 | if (verbose_flag) |
2303 | fnotice (stderr, "Reading specs from %s\n" , filename); |
2304 | |
2305 | /* Open and stat the file. */ |
2306 | desc = open (file: filename, O_RDONLY, 0); |
2307 | if (desc < 0) |
2308 | { |
2309 | failed: |
2310 | /* This leaves DESC open, but the OS will save us. */ |
2311 | fatal_error (input_location, "cannot read spec file %qs: %m" , filename); |
2312 | } |
2313 | |
2314 | if (stat (file: filename, buf: &statbuf) < 0) |
2315 | goto failed; |
2316 | |
2317 | /* Read contents of file into BUFFER. */ |
2318 | buffer = XNEWVEC (char, statbuf.st_size + 1); |
2319 | readlen = read (fd: desc, buf: buffer, nbytes: (unsigned) statbuf.st_size); |
2320 | if (readlen < 0) |
2321 | goto failed; |
2322 | buffer[readlen] = 0; |
2323 | close (fd: desc); |
2324 | |
2325 | specs = XNEWVEC (char, readlen + 1); |
2326 | specs_p = specs; |
2327 | for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++) |
2328 | { |
2329 | int skip = 0; |
2330 | char c = *buffer_p; |
2331 | if (c == '\r') |
2332 | { |
2333 | if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */ |
2334 | skip = 1; |
2335 | else if (*(buffer_p + 1) == '\n') /* \r\n */ |
2336 | skip = 1; |
2337 | else /* \r */ |
2338 | c = '\n'; |
2339 | } |
2340 | if (! skip) |
2341 | *specs_p++ = c; |
2342 | } |
2343 | *specs_p = '\0'; |
2344 | |
2345 | free (ptr: buffer); |
2346 | return (specs); |
2347 | } |
2348 | |
2349 | /* Read compilation specs from a file named FILENAME, |
2350 | replacing the default ones. |
2351 | |
2352 | A suffix which starts with `*' is a definition for |
2353 | one of the machine-specific sub-specs. The "suffix" should be |
2354 | *asm, *cc1, *cpp, *link, *startfile, etc. |
2355 | The corresponding spec is stored in asm_spec, etc., |
2356 | rather than in the `compilers' vector. |
2357 | |
2358 | Anything invalid in the file is a fatal error. */ |
2359 | |
2360 | static void |
2361 | read_specs (const char *filename, bool main_p, bool user_p) |
2362 | { |
2363 | char *buffer; |
2364 | char *p; |
2365 | |
2366 | buffer = load_specs (filename); |
2367 | |
2368 | /* Scan BUFFER for specs, putting them in the vector. */ |
2369 | p = buffer; |
2370 | while (1) |
2371 | { |
2372 | char *suffix; |
2373 | char *spec; |
2374 | char *in, *out, *p1, *p2, *p3; |
2375 | |
2376 | /* Advance P in BUFFER to the next nonblank nocomment line. */ |
2377 | p = skip_whitespace (p); |
2378 | if (*p == 0) |
2379 | break; |
2380 | |
2381 | /* Is this a special command that starts with '%'? */ |
2382 | /* Don't allow this for the main specs file, since it would |
2383 | encourage people to overwrite it. */ |
2384 | if (*p == '%' && !main_p) |
2385 | { |
2386 | p1 = p; |
2387 | while (*p && *p != '\n') |
2388 | p++; |
2389 | |
2390 | /* Skip '\n'. */ |
2391 | p++; |
2392 | |
2393 | if (startswith (str: p1, prefix: "%include" ) |
2394 | && (p1[sizeof "%include" - 1] == ' ' |
2395 | || p1[sizeof "%include" - 1] == '\t')) |
2396 | { |
2397 | char *new_filename; |
2398 | |
2399 | p1 += sizeof ("%include" ); |
2400 | while (*p1 == ' ' || *p1 == '\t') |
2401 | p1++; |
2402 | |
2403 | if (*p1++ != '<' || p[-2] != '>') |
2404 | fatal_error (input_location, |
2405 | "specs %%include syntax malformed after " |
2406 | "%ld characters" , |
2407 | (long) (p1 - buffer + 1)); |
2408 | |
2409 | p[-2] = '\0'; |
2410 | new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true); |
2411 | read_specs (filename: new_filename ? new_filename : p1, main_p: false, user_p); |
2412 | continue; |
2413 | } |
2414 | else if (startswith (str: p1, prefix: "%include_noerr" ) |
2415 | && (p1[sizeof "%include_noerr" - 1] == ' ' |
2416 | || p1[sizeof "%include_noerr" - 1] == '\t')) |
2417 | { |
2418 | char *new_filename; |
2419 | |
2420 | p1 += sizeof "%include_noerr" ; |
2421 | while (*p1 == ' ' || *p1 == '\t') |
2422 | p1++; |
2423 | |
2424 | if (*p1++ != '<' || p[-2] != '>') |
2425 | fatal_error (input_location, |
2426 | "specs %%include syntax malformed after " |
2427 | "%ld characters" , |
2428 | (long) (p1 - buffer + 1)); |
2429 | |
2430 | p[-2] = '\0'; |
2431 | new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true); |
2432 | if (new_filename) |
2433 | read_specs (filename: new_filename, main_p: false, user_p); |
2434 | else if (verbose_flag) |
2435 | fnotice (stderr, "could not find specs file %s\n" , p1); |
2436 | continue; |
2437 | } |
2438 | else if (startswith (str: p1, prefix: "%rename" ) |
2439 | && (p1[sizeof "%rename" - 1] == ' ' |
2440 | || p1[sizeof "%rename" - 1] == '\t')) |
2441 | { |
2442 | int name_len; |
2443 | struct spec_list *sl; |
2444 | struct spec_list *newsl; |
2445 | |
2446 | /* Get original name. */ |
2447 | p1 += sizeof "%rename" ; |
2448 | while (*p1 == ' ' || *p1 == '\t') |
2449 | p1++; |
2450 | |
2451 | if (! ISALPHA ((unsigned char) *p1)) |
2452 | fatal_error (input_location, |
2453 | "specs %%rename syntax malformed after " |
2454 | "%ld characters" , |
2455 | (long) (p1 - buffer)); |
2456 | |
2457 | p2 = p1; |
2458 | while (*p2 && !ISSPACE ((unsigned char) *p2)) |
2459 | p2++; |
2460 | |
2461 | if (*p2 != ' ' && *p2 != '\t') |
2462 | fatal_error (input_location, |
2463 | "specs %%rename syntax malformed after " |
2464 | "%ld characters" , |
2465 | (long) (p2 - buffer)); |
2466 | |
2467 | name_len = p2 - p1; |
2468 | *p2++ = '\0'; |
2469 | while (*p2 == ' ' || *p2 == '\t') |
2470 | p2++; |
2471 | |
2472 | if (! ISALPHA ((unsigned char) *p2)) |
2473 | fatal_error (input_location, |
2474 | "specs %%rename syntax malformed after " |
2475 | "%ld characters" , |
2476 | (long) (p2 - buffer)); |
2477 | |
2478 | /* Get new spec name. */ |
2479 | p3 = p2; |
2480 | while (*p3 && !ISSPACE ((unsigned char) *p3)) |
2481 | p3++; |
2482 | |
2483 | if (p3 != p - 1) |
2484 | fatal_error (input_location, |
2485 | "specs %%rename syntax malformed after " |
2486 | "%ld characters" , |
2487 | (long) (p3 - buffer)); |
2488 | *p3 = '\0'; |
2489 | |
2490 | for (sl = specs; sl; sl = sl->next) |
2491 | if (name_len == sl->name_len && !strcmp (s1: sl->name, s2: p1)) |
2492 | break; |
2493 | |
2494 | if (!sl) |
2495 | fatal_error (input_location, |
2496 | "specs %s spec was not found to be renamed" , p1); |
2497 | |
2498 | if (strcmp (s1: p1, s2: p2) == 0) |
2499 | continue; |
2500 | |
2501 | for (newsl = specs; newsl; newsl = newsl->next) |
2502 | if (strcmp (s1: newsl->name, s2: p2) == 0) |
2503 | fatal_error (input_location, |
2504 | "%s: attempt to rename spec %qs to " |
2505 | "already defined spec %qs" , |
2506 | filename, p1, p2); |
2507 | |
2508 | if (verbose_flag) |
2509 | { |
2510 | fnotice (stderr, "rename spec %s to %s\n" , p1, p2); |
2511 | #ifdef DEBUG_SPECS |
2512 | fnotice (stderr, "spec is '%s'\n\n" , *(sl->ptr_spec)); |
2513 | #endif |
2514 | } |
2515 | |
2516 | set_spec (name: p2, spec: *(sl->ptr_spec), user_p); |
2517 | if (sl->alloc_p) |
2518 | free (CONST_CAST (char *, *(sl->ptr_spec))); |
2519 | |
2520 | *(sl->ptr_spec) = "" ; |
2521 | sl->alloc_p = 0; |
2522 | continue; |
2523 | } |
2524 | else |
2525 | fatal_error (input_location, |
2526 | "specs unknown %% command after %ld characters" , |
2527 | (long) (p1 - buffer)); |
2528 | } |
2529 | |
2530 | /* Find the colon that should end the suffix. */ |
2531 | p1 = p; |
2532 | while (*p1 && *p1 != ':' && *p1 != '\n') |
2533 | p1++; |
2534 | |
2535 | /* The colon shouldn't be missing. */ |
2536 | if (*p1 != ':') |
2537 | fatal_error (input_location, |
2538 | "specs file malformed after %ld characters" , |
2539 | (long) (p1 - buffer)); |
2540 | |
2541 | /* Skip back over trailing whitespace. */ |
2542 | p2 = p1; |
2543 | while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t')) |
2544 | p2--; |
2545 | |
2546 | /* Copy the suffix to a string. */ |
2547 | suffix = save_string (p, p2 - p); |
2548 | /* Find the next line. */ |
2549 | p = skip_whitespace (p: p1 + 1); |
2550 | if (p[1] == 0) |
2551 | fatal_error (input_location, |
2552 | "specs file malformed after %ld characters" , |
2553 | (long) (p - buffer)); |
2554 | |
2555 | p1 = p; |
2556 | /* Find next blank line or end of string. */ |
2557 | while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0'))) |
2558 | p1++; |
2559 | |
2560 | /* Specs end at the blank line and do not include the newline. */ |
2561 | spec = save_string (p, p1 - p); |
2562 | p = p1; |
2563 | |
2564 | /* Delete backslash-newline sequences from the spec. */ |
2565 | in = spec; |
2566 | out = spec; |
2567 | while (*in != 0) |
2568 | { |
2569 | if (in[0] == '\\' && in[1] == '\n') |
2570 | in += 2; |
2571 | else if (in[0] == '#') |
2572 | while (*in && *in != '\n') |
2573 | in++; |
2574 | |
2575 | else |
2576 | *out++ = *in++; |
2577 | } |
2578 | *out = 0; |
2579 | |
2580 | if (suffix[0] == '*') |
2581 | { |
2582 | if (! strcmp (s1: suffix, s2: "*link_command" )) |
2583 | link_command_spec = spec; |
2584 | else |
2585 | { |
2586 | set_spec (name: suffix + 1, spec, user_p); |
2587 | free (ptr: spec); |
2588 | } |
2589 | } |
2590 | else |
2591 | { |
2592 | /* Add this pair to the vector. */ |
2593 | compilers |
2594 | = XRESIZEVEC (struct compiler, compilers, n_compilers + 2); |
2595 | |
2596 | compilers[n_compilers].suffix = suffix; |
2597 | compilers[n_compilers].spec = spec; |
2598 | n_compilers++; |
2599 | memset (s: &compilers[n_compilers], c: 0, n: sizeof compilers[n_compilers]); |
2600 | } |
2601 | |
2602 | if (*suffix == 0) |
2603 | link_command_spec = spec; |
2604 | } |
2605 | |
2606 | if (link_command_spec == 0) |
2607 | fatal_error (input_location, "spec file has no spec for linking" ); |
2608 | |
2609 | XDELETEVEC (buffer); |
2610 | } |
2611 | |
2612 | /* Record the names of temporary files we tell compilers to write, |
2613 | and delete them at the end of the run. */ |
2614 | |
2615 | /* This is the common prefix we use to make temp file names. |
2616 | It is chosen once for each run of this program. |
2617 | It is substituted into a spec by %g or %j. |
2618 | Thus, all temp file names contain this prefix. |
2619 | In practice, all temp file names start with this prefix. |
2620 | |
2621 | This prefix comes from the envvar TMPDIR if it is defined; |
2622 | otherwise, from the P_tmpdir macro if that is defined; |
2623 | otherwise, in /usr/tmp or /tmp; |
2624 | or finally the current directory if all else fails. */ |
2625 | |
2626 | static const char *temp_filename; |
2627 | |
2628 | /* Length of the prefix. */ |
2629 | |
2630 | static int temp_filename_length; |
2631 | |
2632 | /* Define the list of temporary files to delete. */ |
2633 | |
2634 | struct temp_file |
2635 | { |
2636 | const char *name; |
2637 | struct temp_file *next; |
2638 | }; |
2639 | |
2640 | /* Queue of files to delete on success or failure of compilation. */ |
2641 | static struct temp_file *always_delete_queue; |
2642 | /* Queue of files to delete on failure of compilation. */ |
2643 | static struct temp_file *failure_delete_queue; |
2644 | |
2645 | /* Record FILENAME as a file to be deleted automatically. |
2646 | ALWAYS_DELETE nonzero means delete it if all compilation succeeds; |
2647 | otherwise delete it in any case. |
2648 | FAIL_DELETE nonzero means delete it if a compilation step fails; |
2649 | otherwise delete it in any case. */ |
2650 | |
2651 | void |
2652 | record_temp_file (const char *filename, int always_delete, int fail_delete) |
2653 | { |
2654 | char *const name = xstrdup (filename); |
2655 | |
2656 | if (always_delete) |
2657 | { |
2658 | struct temp_file *temp; |
2659 | for (temp = always_delete_queue; temp; temp = temp->next) |
2660 | if (! filename_cmp (s1: name, s2: temp->name)) |
2661 | { |
2662 | free (ptr: name); |
2663 | goto already1; |
2664 | } |
2665 | |
2666 | temp = XNEW (struct temp_file); |
2667 | temp->next = always_delete_queue; |
2668 | temp->name = name; |
2669 | always_delete_queue = temp; |
2670 | |
2671 | already1:; |
2672 | } |
2673 | |
2674 | if (fail_delete) |
2675 | { |
2676 | struct temp_file *temp; |
2677 | for (temp = failure_delete_queue; temp; temp = temp->next) |
2678 | if (! filename_cmp (s1: name, s2: temp->name)) |
2679 | { |
2680 | free (ptr: name); |
2681 | goto already2; |
2682 | } |
2683 | |
2684 | temp = XNEW (struct temp_file); |
2685 | temp->next = failure_delete_queue; |
2686 | temp->name = name; |
2687 | failure_delete_queue = temp; |
2688 | |
2689 | already2:; |
2690 | } |
2691 | } |
2692 | |
2693 | /* Delete all the temporary files whose names we previously recorded. */ |
2694 | |
2695 | #ifndef DELETE_IF_ORDINARY |
2696 | #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \ |
2697 | do \ |
2698 | { \ |
2699 | if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \ |
2700 | if (unlink (NAME) < 0) \ |
2701 | if (VERBOSE_FLAG) \ |
2702 | error ("%s: %m", (NAME)); \ |
2703 | } while (0) |
2704 | #endif |
2705 | |
2706 | static void |
2707 | delete_if_ordinary (const char *name) |
2708 | { |
2709 | struct stat st; |
2710 | #ifdef DEBUG |
2711 | int i, c; |
2712 | |
2713 | printf ("Delete %s? (y or n) " , name); |
2714 | fflush (stdout); |
2715 | i = getchar (); |
2716 | if (i != '\n') |
2717 | while ((c = getchar ()) != '\n' && c != EOF) |
2718 | ; |
2719 | |
2720 | if (i == 'y' || i == 'Y') |
2721 | #endif /* DEBUG */ |
2722 | DELETE_IF_ORDINARY (name, st, verbose_flag); |
2723 | } |
2724 | |
2725 | static void |
2726 | delete_temp_files (void) |
2727 | { |
2728 | struct temp_file *temp; |
2729 | |
2730 | for (temp = always_delete_queue; temp; temp = temp->next) |
2731 | delete_if_ordinary (name: temp->name); |
2732 | always_delete_queue = 0; |
2733 | } |
2734 | |
2735 | /* Delete all the files to be deleted on error. */ |
2736 | |
2737 | static void |
2738 | delete_failure_queue (void) |
2739 | { |
2740 | struct temp_file *temp; |
2741 | |
2742 | for (temp = failure_delete_queue; temp; temp = temp->next) |
2743 | delete_if_ordinary (name: temp->name); |
2744 | } |
2745 | |
2746 | static void |
2747 | clear_failure_queue (void) |
2748 | { |
2749 | failure_delete_queue = 0; |
2750 | } |
2751 | |
2752 | /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK |
2753 | returns non-NULL. |
2754 | If DO_MULTI is true iterate over the paths twice, first with multilib |
2755 | suffix then without, otherwise iterate over the paths once without |
2756 | adding a multilib suffix. When DO_MULTI is true, some attempt is made |
2757 | to avoid visiting the same path twice, but we could do better. For |
2758 | instance, /usr/lib/../lib is considered different from /usr/lib. |
2759 | At least EXTRA_SPACE chars past the end of the path passed to |
2760 | CALLBACK are available for use by the callback. |
2761 | CALLBACK_INFO allows extra parameters to be passed to CALLBACK. |
2762 | |
2763 | Returns the value returned by CALLBACK. */ |
2764 | |
2765 | static void * |
2766 | for_each_path (const struct path_prefix *paths, |
2767 | bool do_multi, |
2768 | size_t , |
2769 | void *(*callback) (char *, void *), |
2770 | void *callback_info) |
2771 | { |
2772 | struct prefix_list *pl; |
2773 | const char *multi_dir = NULL; |
2774 | const char *multi_os_dir = NULL; |
2775 | const char *multiarch_suffix = NULL; |
2776 | const char *multi_suffix; |
2777 | const char *just_multi_suffix; |
2778 | char *path = NULL; |
2779 | void *ret = NULL; |
2780 | bool skip_multi_dir = false; |
2781 | bool skip_multi_os_dir = false; |
2782 | |
2783 | multi_suffix = machine_suffix; |
2784 | just_multi_suffix = just_machine_suffix; |
2785 | if (do_multi && multilib_dir && strcmp (s1: multilib_dir, s2: "." ) != 0) |
2786 | { |
2787 | multi_dir = concat (multilib_dir, dir_separator_str, NULL); |
2788 | multi_suffix = concat (multi_suffix, multi_dir, NULL); |
2789 | just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL); |
2790 | } |
2791 | if (do_multi && multilib_os_dir && strcmp (s1: multilib_os_dir, s2: "." ) != 0) |
2792 | multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL); |
2793 | if (multiarch_dir) |
2794 | multiarch_suffix = concat (multiarch_dir, dir_separator_str, NULL); |
2795 | |
2796 | while (1) |
2797 | { |
2798 | size_t multi_dir_len = 0; |
2799 | size_t multi_os_dir_len = 0; |
2800 | size_t multiarch_len = 0; |
2801 | size_t suffix_len; |
2802 | size_t just_suffix_len; |
2803 | size_t len; |
2804 | |
2805 | if (multi_dir) |
2806 | multi_dir_len = strlen (s: multi_dir); |
2807 | if (multi_os_dir) |
2808 | multi_os_dir_len = strlen (s: multi_os_dir); |
2809 | if (multiarch_suffix) |
2810 | multiarch_len = strlen (s: multiarch_suffix); |
2811 | suffix_len = strlen (s: multi_suffix); |
2812 | just_suffix_len = strlen (s: just_multi_suffix); |
2813 | |
2814 | if (path == NULL) |
2815 | { |
2816 | len = paths->max_len + extra_space + 1; |
2817 | len += MAX (MAX (suffix_len, multi_os_dir_len), multiarch_len); |
2818 | path = XNEWVEC (char, len); |
2819 | } |
2820 | |
2821 | for (pl = paths->plist; pl != 0; pl = pl->next) |
2822 | { |
2823 | len = strlen (s: pl->prefix); |
2824 | memcpy (dest: path, src: pl->prefix, n: len); |
2825 | |
2826 | /* Look first in MACHINE/VERSION subdirectory. */ |
2827 | if (!skip_multi_dir) |
2828 | { |
2829 | memcpy (dest: path + len, src: multi_suffix, n: suffix_len + 1); |
2830 | ret = callback (path, callback_info); |
2831 | if (ret) |
2832 | break; |
2833 | } |
2834 | |
2835 | /* Some paths are tried with just the machine (ie. target) |
2836 | subdir. This is used for finding as, ld, etc. */ |
2837 | if (!skip_multi_dir |
2838 | && pl->require_machine_suffix == 2) |
2839 | { |
2840 | memcpy (dest: path + len, src: just_multi_suffix, n: just_suffix_len + 1); |
2841 | ret = callback (path, callback_info); |
2842 | if (ret) |
2843 | break; |
2844 | } |
2845 | |
2846 | /* Now try the multiarch path. */ |
2847 | if (!skip_multi_dir |
2848 | && !pl->require_machine_suffix && multiarch_dir) |
2849 | { |
2850 | memcpy (dest: path + len, src: multiarch_suffix, n: multiarch_len + 1); |
2851 | ret = callback (path, callback_info); |
2852 | if (ret) |
2853 | break; |
2854 | } |
2855 | |
2856 | /* Now try the base path. */ |
2857 | if (!pl->require_machine_suffix |
2858 | && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir)) |
2859 | { |
2860 | const char *this_multi; |
2861 | size_t this_multi_len; |
2862 | |
2863 | if (pl->os_multilib) |
2864 | { |
2865 | this_multi = multi_os_dir; |
2866 | this_multi_len = multi_os_dir_len; |
2867 | } |
2868 | else |
2869 | { |
2870 | this_multi = multi_dir; |
2871 | this_multi_len = multi_dir_len; |
2872 | } |
2873 | |
2874 | if (this_multi_len) |
2875 | memcpy (dest: path + len, src: this_multi, n: this_multi_len + 1); |
2876 | else |
2877 | path[len] = '\0'; |
2878 | |
2879 | ret = callback (path, callback_info); |
2880 | if (ret) |
2881 | break; |
2882 | } |
2883 | } |
2884 | if (pl) |
2885 | break; |
2886 | |
2887 | if (multi_dir == NULL && multi_os_dir == NULL) |
2888 | break; |
2889 | |
2890 | /* Run through the paths again, this time without multilibs. |
2891 | Don't repeat any we have already seen. */ |
2892 | if (multi_dir) |
2893 | { |
2894 | free (CONST_CAST (char *, multi_dir)); |
2895 | multi_dir = NULL; |
2896 | free (CONST_CAST (char *, multi_suffix)); |
2897 | multi_suffix = machine_suffix; |
2898 | free (CONST_CAST (char *, just_multi_suffix)); |
2899 | just_multi_suffix = just_machine_suffix; |
2900 | } |
2901 | else |
2902 | skip_multi_dir = true; |
2903 | if (multi_os_dir) |
2904 | { |
2905 | free (CONST_CAST (char *, multi_os_dir)); |
2906 | multi_os_dir = NULL; |
2907 | } |
2908 | else |
2909 | skip_multi_os_dir = true; |
2910 | } |
2911 | |
2912 | if (multi_dir) |
2913 | { |
2914 | free (CONST_CAST (char *, multi_dir)); |
2915 | free (CONST_CAST (char *, multi_suffix)); |
2916 | free (CONST_CAST (char *, just_multi_suffix)); |
2917 | } |
2918 | if (multi_os_dir) |
2919 | free (CONST_CAST (char *, multi_os_dir)); |
2920 | if (ret != path) |
2921 | free (ptr: path); |
2922 | return ret; |
2923 | } |
2924 | |
2925 | /* Callback for build_search_list. Adds path to obstack being built. */ |
2926 | |
2927 | struct add_to_obstack_info { |
2928 | struct obstack *ob; |
2929 | bool check_dir; |
2930 | bool first_time; |
2931 | }; |
2932 | |
2933 | static void * |
2934 | add_to_obstack (char *path, void *data) |
2935 | { |
2936 | struct add_to_obstack_info *info = (struct add_to_obstack_info *) data; |
2937 | |
2938 | if (info->check_dir && !is_directory (path, false)) |
2939 | return NULL; |
2940 | |
2941 | if (!info->first_time) |
2942 | obstack_1grow (info->ob, PATH_SEPARATOR); |
2943 | |
2944 | obstack_grow (info->ob, path, strlen (path)); |
2945 | |
2946 | info->first_time = false; |
2947 | return NULL; |
2948 | } |
2949 | |
2950 | /* Add or change the value of an environment variable, outputting the |
2951 | change to standard error if in verbose mode. */ |
2952 | static void |
2953 | xputenv (const char *string) |
2954 | { |
2955 | env.xput (string); |
2956 | } |
2957 | |
2958 | /* Build a list of search directories from PATHS. |
2959 | PREFIX is a string to prepend to the list. |
2960 | If CHECK_DIR_P is true we ensure the directory exists. |
2961 | If DO_MULTI is true, multilib paths are output first, then |
2962 | non-multilib paths. |
2963 | This is used mostly by putenv_from_prefixes so we use `collect_obstack'. |
2964 | It is also used by the --print-search-dirs flag. */ |
2965 | |
2966 | static char * |
2967 | build_search_list (const struct path_prefix *paths, const char *prefix, |
2968 | bool check_dir, bool do_multi) |
2969 | { |
2970 | struct add_to_obstack_info info; |
2971 | |
2972 | info.ob = &collect_obstack; |
2973 | info.check_dir = check_dir; |
2974 | info.first_time = true; |
2975 | |
2976 | obstack_grow (&collect_obstack, prefix, strlen (prefix)); |
2977 | obstack_1grow (&collect_obstack, '='); |
2978 | |
2979 | for_each_path (paths, do_multi, extra_space: 0, callback: add_to_obstack, callback_info: &info); |
2980 | |
2981 | obstack_1grow (&collect_obstack, '\0'); |
2982 | return XOBFINISH (&collect_obstack, char *); |
2983 | } |
2984 | |
2985 | /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables |
2986 | for collect. */ |
2987 | |
2988 | static void |
2989 | putenv_from_prefixes (const struct path_prefix *paths, const char *env_var, |
2990 | bool do_multi) |
2991 | { |
2992 | xputenv (string: build_search_list (paths, prefix: env_var, check_dir: true, do_multi)); |
2993 | } |
2994 | |
2995 | /* Check whether NAME can be accessed in MODE. This is like access, |
2996 | except that it never considers directories to be executable. */ |
2997 | |
2998 | static int |
2999 | access_check (const char *name, int mode) |
3000 | { |
3001 | if (mode == X_OK) |
3002 | { |
3003 | struct stat st; |
3004 | |
3005 | if (stat (file: name, buf: &st) < 0 |
3006 | || S_ISDIR (st.st_mode)) |
3007 | return -1; |
3008 | } |
3009 | |
3010 | return access (name: name, type: mode); |
3011 | } |
3012 | |
3013 | /* Callback for find_a_file. Appends the file name to the directory |
3014 | path. If the resulting file exists in the right mode, return the |
3015 | full pathname to the file. */ |
3016 | |
3017 | struct file_at_path_info { |
3018 | const char *name; |
3019 | const char *suffix; |
3020 | int name_len; |
3021 | int suffix_len; |
3022 | int mode; |
3023 | }; |
3024 | |
3025 | static void * |
3026 | file_at_path (char *path, void *data) |
3027 | { |
3028 | struct file_at_path_info *info = (struct file_at_path_info *) data; |
3029 | size_t len = strlen (s: path); |
3030 | |
3031 | memcpy (dest: path + len, src: info->name, n: info->name_len); |
3032 | len += info->name_len; |
3033 | |
3034 | /* Some systems have a suffix for executable files. |
3035 | So try appending that first. */ |
3036 | if (info->suffix_len) |
3037 | { |
3038 | memcpy (dest: path + len, src: info->suffix, n: info->suffix_len + 1); |
3039 | if (access_check (name: path, mode: info->mode) == 0) |
3040 | return path; |
3041 | } |
3042 | |
3043 | path[len] = '\0'; |
3044 | if (access_check (name: path, mode: info->mode) == 0) |
3045 | return path; |
3046 | |
3047 | return NULL; |
3048 | } |
3049 | |
3050 | /* Search for NAME using the prefix list PREFIXES. MODE is passed to |
3051 | access to check permissions. If DO_MULTI is true, search multilib |
3052 | paths then non-multilib paths, otherwise do not search multilib paths. |
3053 | Return 0 if not found, otherwise return its name, allocated with malloc. */ |
3054 | |
3055 | static char * |
3056 | find_a_file (const struct path_prefix *pprefix, const char *name, int mode, |
3057 | bool do_multi) |
3058 | { |
3059 | struct file_at_path_info info; |
3060 | |
3061 | /* Find the filename in question (special case for absolute paths). */ |
3062 | |
3063 | if (IS_ABSOLUTE_PATH (name)) |
3064 | { |
3065 | if (access (name: name, type: mode) == 0) |
3066 | return xstrdup (name); |
3067 | |
3068 | return NULL; |
3069 | } |
3070 | |
3071 | info.name = name; |
3072 | info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "" ; |
3073 | info.name_len = strlen (s: info.name); |
3074 | info.suffix_len = strlen (s: info.suffix); |
3075 | info.mode = mode; |
3076 | |
3077 | return (char*) for_each_path (paths: pprefix, do_multi, |
3078 | extra_space: info.name_len + info.suffix_len, |
3079 | callback: file_at_path, callback_info: &info); |
3080 | } |
3081 | |
3082 | /* Specialization of find_a_file for programs that also takes into account |
3083 | configure-specified default programs. */ |
3084 | |
3085 | static char* |
3086 | find_a_program (const char *name) |
3087 | { |
3088 | /* Do not search if default matches query. */ |
3089 | |
3090 | #ifdef DEFAULT_ASSEMBLER |
3091 | if (! strcmp (name, "as" ) && access (DEFAULT_ASSEMBLER, X_OK) == 0) |
3092 | return xstrdup (DEFAULT_ASSEMBLER); |
3093 | #endif |
3094 | |
3095 | #ifdef DEFAULT_LINKER |
3096 | if (! strcmp (name, "ld" ) && access (DEFAULT_LINKER, X_OK) == 0) |
3097 | return xstrdup (DEFAULT_LINKER); |
3098 | #endif |
3099 | |
3100 | #ifdef DEFAULT_DSYMUTIL |
3101 | if (! strcmp (name, "dsymutil" ) && access (DEFAULT_DSYMUTIL, X_OK) == 0) |
3102 | return xstrdup (DEFAULT_DSYMUTIL); |
3103 | #endif |
3104 | |
3105 | return find_a_file (pprefix: &exec_prefixes, name, X_OK, do_multi: false); |
3106 | } |
3107 | |
3108 | /* Ranking of prefixes in the sort list. -B prefixes are put before |
3109 | all others. */ |
3110 | |
3111 | enum path_prefix_priority |
3112 | { |
3113 | PREFIX_PRIORITY_B_OPT, |
3114 | PREFIX_PRIORITY_LAST |
3115 | }; |
3116 | |
3117 | /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending |
3118 | order according to PRIORITY. Within each PRIORITY, new entries are |
3119 | appended. |
3120 | |
3121 | If WARN is nonzero, we will warn if no file is found |
3122 | through this prefix. WARN should point to an int |
3123 | which will be set to 1 if this entry is used. |
3124 | |
3125 | COMPONENT is the value to be passed to update_path. |
3126 | |
3127 | REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without |
3128 | the complete value of machine_suffix. |
3129 | 2 means try both machine_suffix and just_machine_suffix. */ |
3130 | |
3131 | static void |
3132 | add_prefix (struct path_prefix *pprefix, const char *prefix, |
3133 | const char *component, /* enum prefix_priority */ int priority, |
3134 | int require_machine_suffix, int os_multilib) |
3135 | { |
3136 | struct prefix_list *pl, **prev; |
3137 | int len; |
3138 | |
3139 | for (prev = &pprefix->plist; |
3140 | (*prev) != NULL && (*prev)->priority <= priority; |
3141 | prev = &(*prev)->next) |
3142 | ; |
3143 | |
3144 | /* Keep track of the longest prefix. */ |
3145 | |
3146 | prefix = update_path (path: prefix, key: component); |
3147 | len = strlen (s: prefix); |
3148 | if (len > pprefix->max_len) |
3149 | pprefix->max_len = len; |
3150 | |
3151 | pl = XNEW (struct prefix_list); |
3152 | pl->prefix = prefix; |
3153 | pl->require_machine_suffix = require_machine_suffix; |
3154 | pl->priority = priority; |
3155 | pl->os_multilib = os_multilib; |
3156 | |
3157 | /* Insert after PREV. */ |
3158 | pl->next = (*prev); |
3159 | (*prev) = pl; |
3160 | } |
3161 | |
3162 | /* Same as add_prefix, but prepending target_system_root to prefix. */ |
3163 | /* The target_system_root prefix has been relocated by gcc_exec_prefix. */ |
3164 | static void |
3165 | add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix, |
3166 | const char *component, |
3167 | /* enum prefix_priority */ int priority, |
3168 | int require_machine_suffix, int os_multilib) |
3169 | { |
3170 | if (!IS_ABSOLUTE_PATH (prefix)) |
3171 | fatal_error (input_location, "system path %qs is not absolute" , prefix); |
3172 | |
3173 | if (target_system_root) |
3174 | { |
3175 | char *sysroot_no_trailing_dir_separator = xstrdup (target_system_root); |
3176 | size_t sysroot_len = strlen (s: target_system_root); |
3177 | |
3178 | if (sysroot_len > 0 |
3179 | && target_system_root[sysroot_len - 1] == DIR_SEPARATOR) |
3180 | sysroot_no_trailing_dir_separator[sysroot_len - 1] = '\0'; |
3181 | |
3182 | if (target_sysroot_suffix) |
3183 | prefix = concat (sysroot_no_trailing_dir_separator, |
3184 | target_sysroot_suffix, prefix, NULL); |
3185 | else |
3186 | prefix = concat (sysroot_no_trailing_dir_separator, prefix, NULL); |
3187 | |
3188 | free (ptr: sysroot_no_trailing_dir_separator); |
3189 | |
3190 | /* We have to override this because GCC's notion of sysroot |
3191 | moves along with GCC. */ |
3192 | component = "GCC" ; |
3193 | } |
3194 | |
3195 | add_prefix (pprefix, prefix, component, priority, |
3196 | require_machine_suffix, os_multilib); |
3197 | } |
3198 | |
3199 | /* Same as add_prefix, but prepending target_sysroot_hdrs_suffix to prefix. */ |
3200 | |
3201 | static void |
3202 | add_sysrooted_hdrs_prefix (struct path_prefix *pprefix, const char *prefix, |
3203 | const char *component, |
3204 | /* enum prefix_priority */ int priority, |
3205 | int require_machine_suffix, int os_multilib) |
3206 | { |
3207 | if (!IS_ABSOLUTE_PATH (prefix)) |
3208 | fatal_error (input_location, "system path %qs is not absolute" , prefix); |
3209 | |
3210 | if (target_system_root) |
3211 | { |
3212 | char *sysroot_no_trailing_dir_separator = xstrdup (target_system_root); |
3213 | size_t sysroot_len = strlen (s: target_system_root); |
3214 | |
3215 | if (sysroot_len > 0 |
3216 | && target_system_root[sysroot_len - 1] == DIR_SEPARATOR) |
3217 | sysroot_no_trailing_dir_separator[sysroot_len - 1] = '\0'; |
3218 | |
3219 | if (target_sysroot_hdrs_suffix) |
3220 | prefix = concat (sysroot_no_trailing_dir_separator, |
3221 | target_sysroot_hdrs_suffix, prefix, NULL); |
3222 | else |
3223 | prefix = concat (sysroot_no_trailing_dir_separator, prefix, NULL); |
3224 | |
3225 | free (ptr: sysroot_no_trailing_dir_separator); |
3226 | |
3227 | /* We have to override this because GCC's notion of sysroot |
3228 | moves along with GCC. */ |
3229 | component = "GCC" ; |
3230 | } |
3231 | |
3232 | add_prefix (pprefix, prefix, component, priority, |
3233 | require_machine_suffix, os_multilib); |
3234 | } |
3235 | |
3236 | |
3237 | /* Execute the command specified by the arguments on the current line of spec. |
3238 | When using pipes, this includes several piped-together commands |
3239 | with `|' between them. |
3240 | |
3241 | Return 0 if successful, -1 if failed. */ |
3242 | |
3243 | static int |
3244 | execute (void) |
3245 | { |
3246 | int i; |
3247 | int n_commands; /* # of command. */ |
3248 | char *string; |
3249 | struct pex_obj *pex; |
3250 | struct command |
3251 | { |
3252 | const char *prog; /* program name. */ |
3253 | const char **argv; /* vector of args. */ |
3254 | }; |
3255 | const char *arg; |
3256 | |
3257 | struct command *commands; /* each command buffer with above info. */ |
3258 | |
3259 | gcc_assert (!processing_spec_function); |
3260 | |
3261 | if (wrapper_string) |
3262 | { |
3263 | string = find_a_program (name: argbuf[0]); |
3264 | if (string) |
3265 | argbuf[0] = string; |
3266 | insert_wrapper (wrapper_string); |
3267 | } |
3268 | |
3269 | /* Count # of piped commands. */ |
3270 | for (n_commands = 1, i = 0; argbuf.iterate (ix: i, ptr: &arg); i++) |
3271 | if (strcmp (s1: arg, s2: "|" ) == 0) |
3272 | n_commands++; |
3273 | |
3274 | /* Get storage for each command. */ |
3275 | commands = XALLOCAVEC (struct command, n_commands); |
3276 | |
3277 | /* Split argbuf into its separate piped processes, |
3278 | and record info about each one. |
3279 | Also search for the programs that are to be run. */ |
3280 | |
3281 | argbuf.safe_push (obj: 0); |
3282 | |
3283 | commands[0].prog = argbuf[0]; /* first command. */ |
3284 | commands[0].argv = argbuf.address (); |
3285 | |
3286 | if (!wrapper_string) |
3287 | { |
3288 | string = find_a_program(name: commands[0].prog); |
3289 | if (string) |
3290 | commands[0].argv[0] = string; |
3291 | } |
3292 | |
3293 | for (n_commands = 1, i = 0; argbuf.iterate (ix: i, ptr: &arg); i++) |
3294 | if (arg && strcmp (s1: arg, s2: "|" ) == 0) |
3295 | { /* each command. */ |
3296 | #if defined (__MSDOS__) || defined (OS2) || defined (VMS) |
3297 | fatal_error (input_location, "%<-pipe%> not supported" ); |
3298 | #endif |
3299 | argbuf[i] = 0; /* Termination of command args. */ |
3300 | commands[n_commands].prog = argbuf[i + 1]; |
3301 | commands[n_commands].argv |
3302 | = &(argbuf.address ())[i + 1]; |
3303 | string = find_a_program(name: commands[n_commands].prog); |
3304 | if (string) |
3305 | commands[n_commands].argv[0] = string; |
3306 | n_commands++; |
3307 | } |
3308 | |
3309 | /* If -v, print what we are about to do, and maybe query. */ |
3310 | |
3311 | if (verbose_flag) |
3312 | { |
3313 | /* For help listings, put a blank line between sub-processes. */ |
3314 | if (print_help_list) |
3315 | fputc (c: '\n', stderr); |
3316 | |
3317 | /* Print each piped command as a separate line. */ |
3318 | for (i = 0; i < n_commands; i++) |
3319 | { |
3320 | const char *const *j; |
3321 | |
3322 | if (verbose_only_flag) |
3323 | { |
3324 | for (j = commands[i].argv; *j; j++) |
3325 | { |
3326 | const char *p; |
3327 | for (p = *j; *p; ++p) |
3328 | if (!ISALNUM ((unsigned char) *p) |
3329 | && *p != '_' && *p != '/' && *p != '-' && *p != '.') |
3330 | break; |
3331 | if (*p || !*j) |
3332 | { |
3333 | fprintf (stderr, format: " \"" ); |
3334 | for (p = *j; *p; ++p) |
3335 | { |
3336 | if (*p == '"' || *p == '\\' || *p == '$') |
3337 | fputc (c: '\\', stderr); |
3338 | fputc (c: *p, stderr); |
3339 | } |
3340 | fputc (c: '"', stderr); |
3341 | } |
3342 | /* If it's empty, print "". */ |
3343 | else if (!**j) |
3344 | fprintf (stderr, format: " \"\"" ); |
3345 | else |
3346 | fprintf (stderr, format: " %s" , *j); |
3347 | } |
3348 | } |
3349 | else |
3350 | for (j = commands[i].argv; *j; j++) |
3351 | /* If it's empty, print "". */ |
3352 | if (!**j) |
3353 | fprintf (stderr, format: " \"\"" ); |
3354 | else |
3355 | fprintf (stderr, format: " %s" , *j); |
3356 | |
3357 | /* Print a pipe symbol after all but the last command. */ |
3358 | if (i + 1 != n_commands) |
3359 | fprintf (stderr, format: " |" ); |
3360 | fprintf (stderr, format: "\n" ); |
3361 | } |
3362 | fflush (stderr); |
3363 | if (verbose_only_flag != 0) |
3364 | { |
3365 | /* verbose_only_flag should act as if the spec was |
3366 | executed, so increment execution_count before |
3367 | returning. This prevents spurious warnings about |
3368 | unused linker input files, etc. */ |
3369 | execution_count++; |
3370 | return 0; |
3371 | } |
3372 | #ifdef DEBUG |
3373 | fnotice (stderr, "\nGo ahead? (y or n) " ); |
3374 | fflush (stderr); |
3375 | i = getchar (); |
3376 | if (i != '\n') |
3377 | while (getchar () != '\n') |
3378 | ; |
3379 | |
3380 | if (i != 'y' && i != 'Y') |
3381 | return 0; |
3382 | #endif /* DEBUG */ |
3383 | } |
3384 | |
3385 | #ifdef ENABLE_VALGRIND_CHECKING |
3386 | /* Run the each command through valgrind. To simplify prepending the |
3387 | path to valgrind and the option "-q" (for quiet operation unless |
3388 | something triggers), we allocate a separate argv array. */ |
3389 | |
3390 | for (i = 0; i < n_commands; i++) |
3391 | { |
3392 | const char **argv; |
3393 | int argc; |
3394 | int j; |
3395 | |
3396 | for (argc = 0; commands[i].argv[argc] != NULL; argc++) |
3397 | ; |
3398 | |
3399 | argv = XALLOCAVEC (const char *, argc + 3); |
3400 | |
3401 | argv[0] = VALGRIND_PATH; |
3402 | argv[1] = "-q" ; |
3403 | for (j = 2; j < argc + 2; j++) |
3404 | argv[j] = commands[i].argv[j - 2]; |
3405 | argv[j] = NULL; |
3406 | |
3407 | commands[i].argv = argv; |
3408 | commands[i].prog = argv[0]; |
3409 | } |
3410 | #endif |
3411 | |
3412 | /* Run each piped subprocess. */ |
3413 | |
3414 | pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file) |
3415 | ? PEX_RECORD_TIMES : 0), |
3416 | pname: progname, tempbase: temp_filename); |
3417 | if (pex == NULL) |
3418 | fatal_error (input_location, "%<pex_init%> failed: %m" ); |
3419 | |
3420 | for (i = 0; i < n_commands; i++) |
3421 | { |
3422 | const char *errmsg; |
3423 | int err; |
3424 | const char *string = commands[i].argv[0]; |
3425 | |
3426 | errmsg = pex_run (obj: pex, |
3427 | flags: ((i + 1 == n_commands ? PEX_LAST : 0) |
3428 | | (string == commands[i].prog ? PEX_SEARCH : 0)), |
3429 | executable: string, CONST_CAST (char **, commands[i].argv), |
3430 | NULL, NULL, err: &err); |
3431 | if (errmsg != NULL) |
3432 | { |
3433 | errno = err; |
3434 | fatal_error (input_location, |
3435 | err ? G_("cannot execute %qs: %s: %m" ) |
3436 | : G_("cannot execute %qs: %s" ), |
3437 | string, errmsg); |
3438 | } |
3439 | |
3440 | if (i && string != commands[i].prog) |
3441 | free (CONST_CAST (char *, string)); |
3442 | } |
3443 | |
3444 | execution_count++; |
3445 | |
3446 | /* Wait for all the subprocesses to finish. */ |
3447 | |
3448 | { |
3449 | int *statuses; |
3450 | struct pex_time *times = NULL; |
3451 | int ret_code = 0; |
3452 | |
3453 | statuses = XALLOCAVEC (int, n_commands); |
3454 | if (!pex_get_status (pex, count: n_commands, vector: statuses)) |
3455 | fatal_error (input_location, "failed to get exit status: %m" ); |
3456 | |
3457 | if (report_times || report_times_to_file) |
3458 | { |
3459 | times = XALLOCAVEC (struct pex_time, n_commands); |
3460 | if (!pex_get_times (pex, count: n_commands, vector: times)) |
3461 | fatal_error (input_location, "failed to get process times: %m" ); |
3462 | } |
3463 | |
3464 | pex_free (pex); |
3465 | |
3466 | for (i = 0; i < n_commands; ++i) |
3467 | { |
3468 | int status = statuses[i]; |
3469 | |
3470 | if (WIFSIGNALED (status)) |
3471 | switch (WTERMSIG (status)) |
3472 | { |
3473 | case SIGINT: |
3474 | case SIGTERM: |
3475 | /* SIGQUIT and SIGKILL are not available on MinGW. */ |
3476 | #ifdef SIGQUIT |
3477 | case SIGQUIT: |
3478 | #endif |
3479 | #ifdef SIGKILL |
3480 | case SIGKILL: |
3481 | #endif |
3482 | /* The user (or environment) did something to the |
3483 | inferior. Making this an ICE confuses the user into |
3484 | thinking there's a compiler bug. Much more likely is |
3485 | the user or OOM killer nuked it. */ |
3486 | fatal_error (input_location, |
3487 | "%s signal terminated program %s" , |
3488 | strsignal (WTERMSIG (status)), |
3489 | commands[i].prog); |
3490 | break; |
3491 | |
3492 | #ifdef SIGPIPE |
3493 | case SIGPIPE: |
3494 | /* SIGPIPE is a special case. It happens in -pipe mode |
3495 | when the compiler dies before the preprocessor is |
3496 | done, or the assembler dies before the compiler is |
3497 | done. There's generally been an error already, and |
3498 | this is just fallout. So don't generate another |
3499 | error unless we would otherwise have succeeded. */ |
3500 | if (signal_count || greatest_status >= MIN_FATAL_STATUS) |
3501 | { |
3502 | signal_count++; |
3503 | ret_code = -1; |
3504 | break; |
3505 | } |
3506 | #endif |
3507 | /* FALLTHROUGH */ |
3508 | |
3509 | default: |
3510 | /* The inferior failed to catch the signal. */ |
3511 | internal_error_no_backtrace ("%s signal terminated program %s" , |
3512 | strsignal (WTERMSIG (status)), |
3513 | commands[i].prog); |
3514 | } |
3515 | else if (WIFEXITED (status) |
3516 | && WEXITSTATUS (status) >= MIN_FATAL_STATUS) |
3517 | { |
3518 | /* For ICEs in cc1, cc1obj, cc1plus see if it is |
3519 | reproducible or not. */ |
3520 | const char *p; |
3521 | if (flag_report_bug |
3522 | && WEXITSTATUS (status) == ICE_EXIT_CODE |
3523 | && i == 0 |
3524 | && (p = strrchr (s: commands[0].argv[0], DIR_SEPARATOR)) |
3525 | && startswith (str: p + 1, prefix: "cc1" )) |
3526 | try_generate_repro (argv: commands[0].argv); |
3527 | if (WEXITSTATUS (status) > greatest_status) |
3528 | greatest_status = WEXITSTATUS (status); |
3529 | ret_code = -1; |
3530 | } |
3531 | |
3532 | if (report_times || report_times_to_file) |
3533 | { |
3534 | struct pex_time *pt = ×[i]; |
3535 | double ut, st; |
3536 | |
3537 | ut = ((double) pt->user_seconds |
3538 | + (double) pt->user_microseconds / 1.0e6); |
3539 | st = ((double) pt->system_seconds |
3540 | + (double) pt->system_microseconds / 1.0e6); |
3541 | |
3542 | if (ut + st != 0) |
3543 | { |
3544 | if (report_times) |
3545 | fnotice (stderr, "# %s %.2f %.2f\n" , |
3546 | commands[i].prog, ut, st); |
3547 | |
3548 | if (report_times_to_file) |
3549 | { |
3550 | int c = 0; |
3551 | const char *const *j; |
3552 | |
3553 | fprintf (stream: report_times_to_file, format: "%g %g" , ut, st); |
3554 | |
3555 | for (j = &commands[i].prog; *j; j = &commands[i].argv[++c]) |
3556 | { |
3557 | const char *p; |
3558 | for (p = *j; *p; ++p) |
3559 | if (*p == '"' || *p == '\\' || *p == '$' |
3560 | || ISSPACE (*p)) |
3561 | break; |
3562 | |
3563 | if (*p) |
3564 | { |
3565 | fprintf (stream: report_times_to_file, format: " \"" ); |
3566 | for (p = *j; *p; ++p) |
3567 | { |
3568 | if (*p == '"' || *p == '\\' || *p == '$') |
3569 | fputc (c: '\\', stream: report_times_to_file); |
3570 | fputc (c: *p, stream: report_times_to_file); |
3571 | } |
3572 | fputc (c: '"', stream: report_times_to_file); |
3573 | } |
3574 | else |
3575 | fprintf (stream: report_times_to_file, format: " %s" , *j); |
3576 | } |
3577 | |
3578 | fputc (c: '\n', stream: report_times_to_file); |
3579 | } |
3580 | } |
3581 | } |
3582 | } |
3583 | |
3584 | if (commands[0].argv[0] != commands[0].prog) |
3585 | free (CONST_CAST (char *, commands[0].argv[0])); |
3586 | |
3587 | return ret_code; |
3588 | } |
3589 | } |
3590 | |
3591 | static struct switchstr *switches; |
3592 | |
3593 | static int n_switches; |
3594 | |
3595 | static int n_switches_alloc; |
3596 | |
3597 | /* Set to zero if -fcompare-debug is disabled, positive if it's |
3598 | enabled and we're running the first compilation, negative if it's |
3599 | enabled and we're running the second compilation. For most of the |
3600 | time, it's in the range -1..1, but it can be temporarily set to 2 |
3601 | or 3 to indicate that the -fcompare-debug flags didn't come from |
3602 | the command-line, but rather from the GCC_COMPARE_DEBUG environment |
3603 | variable, until a synthesized -fcompare-debug flag is added to the |
3604 | command line. */ |
3605 | int compare_debug; |
3606 | |
3607 | /* Set to nonzero if we've seen the -fcompare-debug-second flag. */ |
3608 | int compare_debug_second; |
3609 | |
3610 | /* Set to the flags that should be passed to the second compilation in |
3611 | a -fcompare-debug compilation. */ |
3612 | const char *compare_debug_opt; |
3613 | |
3614 | static struct switchstr *switches_debug_check[2]; |
3615 | |
3616 | static int n_switches_debug_check[2]; |
3617 | |
3618 | static int n_switches_alloc_debug_check[2]; |
3619 | |
3620 | static char *debug_check_temp_file[2]; |
3621 | |
3622 | /* Language is one of three things: |
3623 | |
3624 | 1) The name of a real programming language. |
3625 | 2) NULL, indicating that no one has figured out |
3626 | what it is yet. |
3627 | 3) '*', indicating that the file should be passed |
3628 | to the linker. */ |
3629 | struct infile |
3630 | { |
3631 | const char *name; |
3632 | const char *language; |
3633 | struct compiler *incompiler; |
3634 | bool compiled; |
3635 | bool preprocessed; |
3636 | }; |
3637 | |
3638 | /* Also a vector of input files specified. */ |
3639 | |
3640 | static struct infile *infiles; |
3641 | |
3642 | int n_infiles; |
3643 | |
3644 | static int n_infiles_alloc; |
3645 | |
3646 | /* True if undefined environment variables encountered during spec processing |
3647 | are ok to ignore, typically when we're running for --help or --version. */ |
3648 | |
3649 | static bool spec_undefvar_allowed; |
3650 | |
3651 | /* True if multiple input files are being compiled to a single |
3652 | assembly file. */ |
3653 | |
3654 | static bool combine_inputs; |
3655 | |
3656 | /* This counts the number of libraries added by lang_specific_driver, so that |
3657 | we can tell if there were any user supplied any files or libraries. */ |
3658 | |
3659 | static int added_libraries; |
3660 | |
3661 | /* And a vector of corresponding output files is made up later. */ |
3662 | |
3663 | const char **outfiles; |
3664 | |
3665 | #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX) |
3666 | |
3667 | /* Convert NAME to a new name if it is the standard suffix. DO_EXE |
3668 | is true if we should look for an executable suffix. DO_OBJ |
3669 | is true if we should look for an object suffix. */ |
3670 | |
3671 | static const char * |
3672 | convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED, |
3673 | int do_obj ATTRIBUTE_UNUSED) |
3674 | { |
3675 | #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) |
3676 | int i; |
3677 | #endif |
3678 | int len; |
3679 | |
3680 | if (name == NULL) |
3681 | return NULL; |
3682 | |
3683 | len = strlen (name); |
3684 | |
3685 | #ifdef HAVE_TARGET_OBJECT_SUFFIX |
3686 | /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */ |
3687 | if (do_obj && len > 2 |
3688 | && name[len - 2] == '.' |
3689 | && name[len - 1] == 'o') |
3690 | { |
3691 | obstack_grow (&obstack, name, len - 2); |
3692 | obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); |
3693 | name = XOBFINISH (&obstack, const char *); |
3694 | } |
3695 | #endif |
3696 | |
3697 | #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) |
3698 | /* If there is no filetype, make it the executable suffix (which includes |
3699 | the "."). But don't get confused if we have just "-o". */ |
3700 | if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || not_actual_file_p (name)) |
3701 | return name; |
3702 | |
3703 | for (i = len - 1; i >= 0; i--) |
3704 | if (IS_DIR_SEPARATOR (name[i])) |
3705 | break; |
3706 | |
3707 | for (i++; i < len; i++) |
3708 | if (name[i] == '.') |
3709 | return name; |
3710 | |
3711 | obstack_grow (&obstack, name, len); |
3712 | obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX, |
3713 | strlen (TARGET_EXECUTABLE_SUFFIX)); |
3714 | name = XOBFINISH (&obstack, const char *); |
3715 | #endif |
3716 | |
3717 | return name; |
3718 | } |
3719 | #endif |
3720 | |
3721 | /* Display the command line switches accepted by gcc. */ |
3722 | static void |
3723 | display_help (void) |
3724 | { |
3725 | printf (_("Usage: %s [options] file...\n" ), progname); |
3726 | fputs (_("Options:\n" ), stdout); |
3727 | |
3728 | fputs (_(" -pass-exit-codes Exit with highest error code from a phase.\n" ), stdout); |
3729 | fputs (_(" --help Display this information.\n" ), stdout); |
3730 | fputs (_(" --target-help Display target specific command line options " |
3731 | "(including assembler and linker options).\n" ), stdout); |
3732 | fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...].\n" ), stdout); |
3733 | fputs (_(" Display specific types of command line options.\n" ), stdout); |
3734 | if (! verbose_flag) |
3735 | fputs (_(" (Use '-v --help' to display command line options of sub-processes).\n" ), stdout); |
3736 | fputs (_(" --version Display compiler version information.\n" ), stdout); |
3737 | fputs (_(" -dumpspecs Display all of the built in spec strings.\n" ), stdout); |
3738 | fputs (_(" -dumpversion Display the version of the compiler.\n" ), stdout); |
3739 | fputs (_(" -dumpmachine Display the compiler's target processor.\n" ), stdout); |
3740 | fputs (_(" -foffload=<targets> Specify offloading targets.\n" ), stdout); |
3741 | fputs (_(" -print-search-dirs Display the directories in the compiler's search path.\n" ), stdout); |
3742 | fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library.\n" ), stdout); |
3743 | fputs (_(" -print-file-name=<lib> Display the full path to library <lib>.\n" ), stdout); |
3744 | fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>.\n" ), stdout); |
3745 | fputs (_("\ |
3746 | -print-multiarch Display the target's normalized GNU triplet, used as\n\ |
3747 | a component in the library path.\n" ), stdout); |
3748 | fputs (_(" -print-multi-directory Display the root directory for versions of libgcc.\n" ), stdout); |
3749 | fputs (_("\ |
3750 | -print-multi-lib Display the mapping between command line options and\n\ |
3751 | multiple library search directories.\n" ), stdout); |
3752 | fputs (_(" -print-multi-os-directory Display the relative path to OS libraries.\n" ), stdout); |
3753 | fputs (_(" -print-sysroot Display the target libraries directory.\n" ), stdout); |
3754 | fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers.\n" ), stdout); |
3755 | fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler.\n" ), stdout); |
3756 | fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor.\n" ), stdout); |
3757 | fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker.\n" ), stdout); |
3758 | fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler.\n" ), stdout); |
3759 | fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor.\n" ), stdout); |
3760 | fputs (_(" -Xlinker <arg> Pass <arg> on to the linker.\n" ), stdout); |
3761 | fputs (_(" -save-temps Do not delete intermediate files.\n" ), stdout); |
3762 | fputs (_(" -save-temps=<arg> Do not delete intermediate files.\n" ), stdout); |
3763 | fputs (_("\ |
3764 | -no-canonical-prefixes Do not canonicalize paths when building relative\n\ |
3765 | prefixes to other gcc components.\n" ), stdout); |
3766 | fputs (_(" -pipe Use pipes rather than intermediate files.\n" ), stdout); |
3767 | fputs (_(" -time Time the execution of each subprocess.\n" ), stdout); |
3768 | fputs (_(" -specs=<file> Override built-in specs with the contents of <file>.\n" ), stdout); |
3769 | fputs (_(" -std=<standard> Assume that the input sources are for <standard>.\n" ), stdout); |
3770 | fputs (_("\ |
3771 | --sysroot=<directory> Use <directory> as the root directory for headers\n\ |
3772 | and libraries.\n" ), stdout); |
3773 | fputs (_(" -B <directory> Add <directory> to the compiler's search paths.\n" ), stdout); |
3774 | fputs (_(" -v Display the programs invoked by the compiler.\n" ), stdout); |
3775 | fputs (_(" -### Like -v but options quoted and commands not executed.\n" ), stdout); |
3776 | fputs (_(" -E Preprocess only; do not compile, assemble or link.\n" ), stdout); |
3777 | fputs (_(" -S Compile only; do not assemble or link.\n" ), stdout); |
3778 | fputs (_(" -c Compile and assemble, but do not link.\n" ), stdout); |
3779 | fputs (_(" -o <file> Place the output into <file>.\n" ), stdout); |
3780 | fputs (_(" -pie Create a dynamically linked position independent\n\ |
3781 | executable.\n" ), stdout); |
3782 | fputs (_(" -shared Create a shared library.\n" ), stdout); |
3783 | fputs (_("\ |
3784 | -x <language> Specify the language of the following input files.\n\ |
3785 | Permissible languages include: c c++ assembler none\n\ |
3786 | 'none' means revert to the default behavior of\n\ |
3787 | guessing the language based on the file's extension.\n\ |
3788 | " ), stdout); |
3789 | |
3790 | printf (_("\ |
3791 | \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\ |
3792 | passed on to the various sub-processes invoked by %s. In order to pass\n\ |
3793 | other options on to these processes the -W<letter> options must be used.\n\ |
3794 | " ), progname); |
3795 | |
3796 | /* The rest of the options are displayed by invocations of the various |
3797 | sub-processes. */ |
3798 | } |
3799 | |
3800 | static void |
3801 | add_preprocessor_option (const char *option, int len) |
3802 | { |
3803 | preprocessor_options.safe_push (obj: save_string (option, len)); |
3804 | } |
3805 | |
3806 | static void |
3807 | add_assembler_option (const char *option, int len) |
3808 | { |
3809 | assembler_options.safe_push (obj: save_string (option, len)); |
3810 | } |
3811 | |
3812 | static void |
3813 | add_linker_option (const char *option, int len) |
3814 | { |
3815 | linker_options.safe_push (obj: save_string (option, len)); |
3816 | } |
3817 | |
3818 | /* Allocate space for an input file in infiles. */ |
3819 | |
3820 | static void |
3821 | alloc_infile (void) |
3822 | { |
3823 | if (n_infiles_alloc == 0) |
3824 | { |
3825 | n_infiles_alloc = 16; |
3826 | infiles = XNEWVEC (struct infile, n_infiles_alloc); |
3827 | } |
3828 | else if (n_infiles_alloc == n_infiles) |
3829 | { |
3830 | n_infiles_alloc *= 2; |
3831 | infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc); |
3832 | } |
3833 | } |
3834 | |
3835 | /* Store an input file with the given NAME and LANGUAGE in |
3836 | infiles. */ |
3837 | |
3838 | static void |
3839 | add_infile (const char *name, const char *language) |
3840 | { |
3841 | alloc_infile (); |
3842 | infiles[n_infiles].name = name; |
3843 | infiles[n_infiles++].language = language; |
3844 | } |
3845 | |
3846 | /* Allocate space for a switch in switches. */ |
3847 | |
3848 | static void |
3849 | alloc_switch (void) |
3850 | { |
3851 | if (n_switches_alloc == 0) |
3852 | { |
3853 | n_switches_alloc = 16; |
3854 | switches = XNEWVEC (struct switchstr, n_switches_alloc); |
3855 | } |
3856 | else if (n_switches_alloc == n_switches) |
3857 | { |
3858 | n_switches_alloc *= 2; |
3859 | switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc); |
3860 | } |
3861 | } |
3862 | |
3863 | /* Save an option OPT with N_ARGS arguments in array ARGS, marking it |
3864 | as validated if VALIDATED and KNOWN if it is an internal switch. */ |
3865 | |
3866 | static void |
3867 | save_switch (const char *opt, size_t n_args, const char *const *args, |
3868 | bool validated, bool known) |
3869 | { |
3870 | alloc_switch (); |
3871 | switches[n_switches].part1 = opt + 1; |
3872 | if (n_args == 0) |
3873 | switches[n_switches].args = 0; |
3874 | else |
3875 | { |
3876 | switches[n_switches].args = XNEWVEC (const char *, n_args + 1); |
3877 | memcpy (dest: switches[n_switches].args, src: args, n: n_args * sizeof (const char *)); |
3878 | switches[n_switches].args[n_args] = NULL; |
3879 | } |
3880 | |
3881 | switches[n_switches].live_cond = 0; |
3882 | switches[n_switches].validated = validated; |
3883 | switches[n_switches].known = known; |
3884 | switches[n_switches].ordering = 0; |
3885 | n_switches++; |
3886 | } |
3887 | |
3888 | /* Set the SOURCE_DATE_EPOCH environment variable to the current time if it is |
3889 | not set already. */ |
3890 | |
3891 | static void |
3892 | set_source_date_epoch_envvar () |
3893 | { |
3894 | /* Array size is 21 = ceil(log_10(2^64)) + 1 to hold string representations |
3895 | of 64 bit integers. */ |
3896 | char source_date_epoch[21]; |
3897 | time_t tt; |
3898 | |
3899 | errno = 0; |
3900 | tt = time (NULL); |
3901 | if (tt < (time_t) 0 || errno != 0) |
3902 | tt = (time_t) 0; |
3903 | |
3904 | snprintf (s: source_date_epoch, maxlen: 21, format: "%llu" , (unsigned long long) tt); |
3905 | /* Using setenv instead of xputenv because we want the variable to remain |
3906 | after finalizing so that it's still set in the second run when using |
3907 | -fcompare-debug. */ |
3908 | setenv (name: "SOURCE_DATE_EPOCH" , value: source_date_epoch, replace: 0); |
3909 | } |
3910 | |
3911 | /* Handle an option DECODED that is unknown to the option-processing |
3912 | machinery. */ |
3913 | |
3914 | static bool |
3915 | driver_unknown_option_callback (const struct cl_decoded_option *decoded) |
3916 | { |
3917 | const char *opt = decoded->arg; |
3918 | if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-' |
3919 | && !(decoded->errors & CL_ERR_NEGATIVE)) |
3920 | { |
3921 | /* Leave unknown -Wno-* options for the compiler proper, to be |
3922 | diagnosed only if there are warnings. */ |
3923 | save_switch (opt: decoded->canonical_option[0], |
3924 | n_args: decoded->canonical_option_num_elements - 1, |
3925 | args: &decoded->canonical_option[1], validated: false, known: true); |
3926 | return false; |
3927 | } |
3928 | if (decoded->opt_index == OPT_SPECIAL_unknown) |
3929 | { |
3930 | /* Give it a chance to define it a spec file. */ |
3931 | save_switch (opt: decoded->canonical_option[0], |
3932 | n_args: decoded->canonical_option_num_elements - 1, |
3933 | args: &decoded->canonical_option[1], validated: false, known: false); |
3934 | return false; |
3935 | } |
3936 | else |
3937 | return true; |
3938 | } |
3939 | |
3940 | /* Handle an option DECODED that is not marked as CL_DRIVER. |
3941 | LANG_MASK will always be CL_DRIVER. */ |
3942 | |
3943 | static void |
3944 | driver_wrong_lang_callback (const struct cl_decoded_option *decoded, |
3945 | unsigned int lang_mask ATTRIBUTE_UNUSED) |
3946 | { |
3947 | /* At this point, non-driver options are accepted (and expected to |
3948 | be passed down by specs) unless marked to be rejected by the |
3949 | driver. Options to be rejected by the driver but accepted by the |
3950 | compilers proper are treated just like completely unknown |
3951 | options. */ |
3952 | const struct cl_option *option = &cl_options[decoded->opt_index]; |
3953 | |
3954 | if (option->cl_reject_driver) |
3955 | error ("unrecognized command-line option %qs" , |
3956 | decoded->orig_option_with_args_text); |
3957 | else |
3958 | save_switch (opt: decoded->canonical_option[0], |
3959 | n_args: decoded->canonical_option_num_elements - 1, |
3960 | args: &decoded->canonical_option[1], validated: false, known: true); |
3961 | } |
3962 | |
3963 | static const char *spec_lang = 0; |
3964 | static int last_language_n_infiles; |
3965 | |
3966 | |
3967 | /* Check that GCC is configured to support the offload target. */ |
3968 | |
3969 | static bool |
3970 | check_offload_target_name (const char *target, ptrdiff_t len) |
3971 | { |
3972 | const char *n, *c = OFFLOAD_TARGETS; |
3973 | while (c) |
3974 | { |
3975 | n = strchr (s: c, c: ','); |
3976 | if (n == NULL) |
3977 | n = strchr (s: c, c: '\0'); |
3978 | if (len == n - c && strncmp (s1: target, s2: c, n: n - c) == 0) |
3979 | break; |
3980 | c = *n ? n + 1 : NULL; |
3981 | } |
3982 | if (!c) |
3983 | { |
3984 | auto_vec<const char*> candidates; |
3985 | size_t olen = strlen (OFFLOAD_TARGETS) + 1; |
3986 | char *cand = XALLOCAVEC (char, olen); |
3987 | memcpy (dest: cand, OFFLOAD_TARGETS, n: olen); |
3988 | for (c = strtok (s: cand, delim: "," ); c; c = strtok (NULL, delim: "," )) |
3989 | candidates.safe_push (obj: c); |
3990 | candidates.safe_push (obj: "default" ); |
3991 | candidates.safe_push (obj: "disable" ); |
3992 | |
3993 | char *target2 = XALLOCAVEC (char, len + 1); |
3994 | memcpy (dest: target2, src: target, n: len); |
3995 | target2[len] = '\0'; |
3996 | |
3997 | error ("GCC is not configured to support %qs as %<-foffload=%> argument" , |
3998 | target2); |
3999 | |
4000 | char *s; |
4001 | const char *hint = candidates_list_and_hint (arg: target2, str&: s, candidates); |
4002 | if (hint) |
4003 | inform (UNKNOWN_LOCATION, |
4004 | "valid %<-foffload=%> arguments are: %s; " |
4005 | "did you mean %qs?" , s, hint); |
4006 | else |
4007 | inform (UNKNOWN_LOCATION, "valid %<-foffload=%> arguments are: %s" , s); |
4008 | XDELETEVEC (s); |
4009 | return false; |
4010 | } |
4011 | return true; |
4012 | } |
4013 | |
4014 | /* Sanity check for -foffload-options. */ |
4015 | |
4016 | static void |
4017 | check_foffload_target_names (const char *arg) |
4018 | { |
4019 | const char *cur, *next, *end; |
4020 | /* If option argument starts with '-' then no target is specified and we |
4021 | do not need to parse it. */ |
4022 | if (arg[0] == '-') |
4023 | return; |
4024 | end = strchr (s: arg, c: '='); |
4025 | if (end == NULL) |
4026 | { |
4027 | error ("%<=%>options missing after %<-foffload-options=%>target" ); |
4028 | return; |
4029 | } |
4030 | |
4031 | cur = arg; |
4032 | while (cur < end) |
4033 | { |
4034 | next = strchr (s: cur, c: ','); |
4035 | if (next == NULL) |
4036 | next = end; |
4037 | next = (next > end) ? end : next; |
4038 | |
4039 | /* Retain non-supported targets after printing an error as those will not |
4040 | be processed; each enabled target only processes its triplet. */ |
4041 | check_offload_target_name (target: cur, len: next - cur); |
4042 | cur = next + 1; |
4043 | } |
4044 | } |
4045 | |
4046 | /* Parse -foffload option argument. */ |
4047 | |
4048 | static void |
4049 | handle_foffload_option (const char *arg) |
4050 | { |
4051 | const char *c, *cur, *n, *next, *end; |
4052 | char *target; |
4053 | |
4054 | /* If option argument starts with '-' then no target is specified and we |
4055 | do not need to parse it. */ |
4056 | if (arg[0] == '-') |
4057 | return; |
4058 | |
4059 | end = strchr (s: arg, c: '='); |
4060 | if (end == NULL) |
4061 | end = strchr (s: arg, c: '\0'); |
4062 | cur = arg; |
4063 | |
4064 | while (cur < end) |
4065 | { |
4066 | next = strchr (s: cur, c: ','); |
4067 | if (next == NULL) |
4068 | next = end; |
4069 | next = (next > end) ? end : next; |
4070 | |
4071 | target = XNEWVEC (char, next - cur + 1); |
4072 | memcpy (dest: target, src: cur, n: next - cur); |
4073 | target[next - cur] = '\0'; |
4074 | |
4075 | /* Reset offloading list and continue. */ |
4076 | if (strcmp (s1: target, s2: "default" ) == 0) |
4077 | { |
4078 | free (ptr: offload_targets); |
4079 | offload_targets = NULL; |
4080 | goto next_item; |
4081 | } |
4082 | |
4083 | /* If 'disable' is passed to the option, clean the list of |
4084 | offload targets and return, even if more targets follow. |
4085 | Likewise if GCC is not configured to support that offload target. */ |
4086 | if (strcmp (s1: target, s2: "disable" ) == 0 |
4087 | || !check_offload_target_name (target, len: next - cur)) |
4088 | { |
4089 | free (ptr: offload_targets); |
4090 | offload_targets = xstrdup ("" ); |
4091 | return; |
4092 | } |
4093 | |
4094 | if (!offload_targets) |
4095 | { |
4096 | offload_targets = target; |
4097 | target = NULL; |
4098 | } |
4099 | else |
4100 | { |
4101 | /* Check that the target hasn't already presented in the list. */ |
4102 | c = offload_targets; |
4103 | do |
4104 | { |
4105 | n = strchr (s: c, c: ':'); |
4106 | if (n == NULL) |
4107 | n = strchr (s: c, c: '\0'); |
4108 | |
4109 | if (next - cur == n - c && strncmp (s1: c, s2: target, n: n - c) == 0) |
4110 | break; |
4111 | |
4112 | c = n + 1; |
4113 | } |
4114 | while (*n); |
4115 | |
4116 | /* If duplicate is not found, append the target to the list. */ |
4117 | if (c > n) |
4118 | { |
4119 | size_t offload_targets_len = strlen (s: offload_targets); |
4120 | offload_targets |
4121 | = XRESIZEVEC (char, offload_targets, |
4122 | offload_targets_len + 1 + next - cur + 1); |
4123 | offload_targets[offload_targets_len++] = ':'; |
4124 | memcpy (dest: offload_targets + offload_targets_len, src: target, n: next - cur + 1); |
4125 | } |
4126 | } |
4127 | next_item: |
4128 | cur = next + 1; |
4129 | XDELETEVEC (target); |
4130 | } |
4131 | } |
4132 | |
4133 | /* Forward certain options to offloading compilation. */ |
4134 | |
4135 | static void |
4136 | forward_offload_option (size_t opt_index, const char *arg, bool validated) |
4137 | { |
4138 | switch (opt_index) |
4139 | { |
4140 | case OPT_l: |
4141 | /* Use a '_GCC_' prefix and standard name ('-l_GCC_m' irrespective of the |
4142 | host's 'MATH_LIBRARY', for example), so that the 'mkoffload's can tell |
4143 | this has been synthesized here, and translate/drop as necessary. */ |
4144 | /* Note that certain libraries ('-lc', '-lgcc', '-lgomp', for example) |
4145 | are injected by default in offloading compilation, and therefore not |
4146 | forwarded here. */ |
4147 | /* GCC libraries. */ |
4148 | if (/* '-lgfortran' */ strcmp (s1: arg, s2: "gfortran" ) == 0 ) |
4149 | save_switch (opt: concat ("-foffload-options=-l_GCC_" , arg, NULL), |
4150 | n_args: 0, NULL, validated, known: true); |
4151 | /* Other libraries. */ |
4152 | else |
4153 | { |
4154 | /* The case will need special consideration where on the host |
4155 | '!need_math', but for offloading compilation still need |
4156 | '-foffload-options=-l_GCC_m'. The problem is that we don't get |
4157 | here anything like '-lm', because it's not synthesized in |
4158 | 'gcc/fortran/gfortranspec.cc:lang_specific_driver', for example. |
4159 | Generally synthesizing '-foffload-options=-l_GCC_m' etc. in the |
4160 | language specific drivers is non-trivial, needs very careful |
4161 | review of their options handling. However, this issue is not |
4162 | actually relevant for the current set of supported host/offloading |
4163 | configurations. */ |
4164 | int need_math = (MATH_LIBRARY[0] != '\0'); |
4165 | if (/* '-lm' */ (need_math && strcmp (s1: arg, MATH_LIBRARY) == 0)) |
4166 | save_switch (opt: "-foffload-options=-l_GCC_m" , |
4167 | n_args: 0, NULL, validated, known: true); |
4168 | } |
4169 | break; |
4170 | default: |
4171 | gcc_unreachable (); |
4172 | } |
4173 | } |
4174 | |
4175 | /* Handle a driver option; arguments and return value as for |
4176 | handle_option. */ |
4177 | |
4178 | static bool |
4179 | driver_handle_option (struct gcc_options *opts, |
4180 | struct gcc_options *opts_set, |
4181 | const struct cl_decoded_option *decoded, |
4182 | unsigned int lang_mask ATTRIBUTE_UNUSED, int kind, |
4183 | location_t loc, |
4184 | const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED, |
4185 | diagnostic_context *dc, |
4186 | void (*) (void)) |
4187 | { |
4188 | size_t opt_index = decoded->opt_index; |
4189 | const char *arg = decoded->arg; |
4190 | const char *compare_debug_replacement_opt; |
4191 | int value = decoded->value; |
4192 | bool validated = false; |
4193 | bool do_save = true; |
4194 | |
4195 | gcc_assert (opts == &global_options); |
4196 | gcc_assert (opts_set == &global_options_set); |
4197 | gcc_assert (kind == DK_UNSPECIFIED); |
4198 | gcc_assert (loc == UNKNOWN_LOCATION); |
4199 | gcc_assert (dc == global_dc); |
4200 | |
4201 | switch (opt_index) |
4202 | { |
4203 | case OPT_dumpspecs: |
4204 | { |
4205 | struct spec_list *sl; |
4206 | init_spec (); |
4207 | for (sl = specs; sl; sl = sl->next) |
4208 | printf (format: "*%s:\n%s\n\n" , sl->name, *(sl->ptr_spec)); |
4209 | if (link_command_spec) |
4210 | printf (format: "*link_command:\n%s\n\n" , link_command_spec); |
4211 | exit (status: 0); |
4212 | } |
4213 | |
4214 | case OPT_dumpversion: |
4215 | printf (format: "%s\n" , spec_version); |
4216 | exit (status: 0); |
4217 | |
4218 | case OPT_dumpmachine: |
4219 | printf (format: "%s\n" , spec_machine); |
4220 | exit (status: 0); |
4221 | |
4222 | case OPT_dumpfullversion: |
4223 | printf ("%s\n" , BASEVER); |
4224 | exit (status: 0); |
4225 | |
4226 | case OPT__version: |
4227 | print_version = 1; |
4228 | |
4229 | /* CPP driver cannot obtain switch from cc1_options. */ |
4230 | if (is_cpp_driver) |
4231 | add_preprocessor_option (option: "--version" , len: strlen (s: "--version" )); |
4232 | add_assembler_option (option: "--version" , len: strlen (s: "--version" )); |
4233 | add_linker_option (option: "--version" , len: strlen (s: "--version" )); |
4234 | break; |
4235 | |
4236 | case OPT__completion_: |
4237 | validated = true; |
4238 | completion = decoded->arg; |
4239 | break; |
4240 | |
4241 | case OPT__help: |
4242 | print_help_list = 1; |
4243 | |
4244 | /* CPP driver cannot obtain switch from cc1_options. */ |
4245 | if (is_cpp_driver) |
4246 | add_preprocessor_option (option: "--help" , len: 6); |
4247 | add_assembler_option (option: "--help" , len: 6); |
4248 | add_linker_option (option: "--help" , len: 6); |
4249 | break; |
4250 | |
4251 | case OPT__help_: |
4252 | print_subprocess_help = 2; |
4253 | break; |
4254 | |
4255 | case OPT__target_help: |
4256 | print_subprocess_help = 1; |
4257 | |
4258 | /* CPP driver cannot obtain switch from cc1_options. */ |
4259 | if (is_cpp_driver) |
4260 | add_preprocessor_option (option: "--target-help" , len: 13); |
4261 | add_assembler_option (option: "--target-help" , len: 13); |
4262 | add_linker_option (option: "--target-help" , len: 13); |
4263 | break; |
4264 | |
4265 | case OPT__no_sysroot_suffix: |
4266 | case OPT_pass_exit_codes: |
4267 | case OPT_print_search_dirs: |
4268 | case OPT_print_file_name_: |
4269 | case OPT_print_prog_name_: |
4270 | case OPT_print_multi_lib: |
4271 | case OPT_print_multi_directory: |
4272 | case OPT_print_sysroot: |
4273 | case OPT_print_multi_os_directory: |
4274 | case OPT_print_multiarch: |
4275 | case OPT_print_sysroot_headers_suffix: |
4276 | case OPT_time: |
4277 | case OPT_wrapper: |
4278 | /* These options set the variables specified in common.opt |
4279 | automatically, and do not need to be saved for spec |
4280 | processing. */ |
4281 | do_save = false; |
4282 | break; |
4283 | |
4284 | case OPT_print_libgcc_file_name: |
4285 | print_file_name = "libgcc.a" ; |
4286 | do_save = false; |
4287 | break; |
4288 | |
4289 | case OPT_fuse_ld_bfd: |
4290 | use_ld = ".bfd" ; |
4291 | break; |
4292 | |
4293 | case OPT_fuse_ld_gold: |
4294 | use_ld = ".gold" ; |
4295 | break; |
4296 | |
4297 | case OPT_fuse_ld_mold: |
4298 | use_ld = ".mold" ; |
4299 | break; |
4300 | |
4301 | case OPT_fcompare_debug_second: |
4302 | compare_debug_second = 1; |
4303 | break; |
4304 | |
4305 | case OPT_fcompare_debug: |
4306 | switch (value) |
4307 | { |
4308 | case 0: |
4309 | compare_debug_replacement_opt = "-fcompare-debug=" ; |
4310 | arg = "" ; |
4311 | goto compare_debug_with_arg; |
4312 | |
4313 | case 1: |
4314 | compare_debug_replacement_opt = "-fcompare-debug=-gtoggle" ; |
4315 | arg = "-gtoggle" ; |
4316 | goto compare_debug_with_arg; |
4317 | |
4318 | default: |
4319 | gcc_unreachable (); |
4320 | } |
4321 | break; |
4322 | |
4323 | case OPT_fcompare_debug_: |
4324 | compare_debug_replacement_opt = decoded->canonical_option[0]; |
4325 | compare_debug_with_arg: |
4326 | gcc_assert (decoded->canonical_option_num_elements == 1); |
4327 | gcc_assert (arg != NULL); |
4328 | if (*arg) |
4329 | compare_debug = 1; |
4330 | else |
4331 | compare_debug = -1; |
4332 | if (compare_debug < 0) |
4333 | compare_debug_opt = NULL; |
4334 | else |
4335 | compare_debug_opt = arg; |
4336 | save_switch (opt: compare_debug_replacement_opt, n_args: 0, NULL, validated, known: true); |
4337 | set_source_date_epoch_envvar (); |
4338 | return true; |
4339 | |
4340 | case OPT_fdiagnostics_color_: |
4341 | diagnostic_color_init (context: dc, value); |
4342 | break; |
4343 | |
4344 | case OPT_fdiagnostics_urls_: |
4345 | diagnostic_urls_init (context: dc, value); |
4346 | break; |
4347 | |
4348 | case OPT_fdiagnostics_format_: |
4349 | { |
4350 | const char *basename = (opts->x_dump_base_name ? opts->x_dump_base_name |
4351 | : opts->x_main_input_basename); |
4352 | diagnostic_output_format_init (dc, base_file_name: basename, |
4353 | (enum diagnostics_output_format)value); |
4354 | break; |
4355 | } |
4356 | |
4357 | case OPT_fdiagnostics_text_art_charset_: |
4358 | dc->set_text_art_charset ((enum diagnostic_text_art_charset)value); |
4359 | break; |
4360 | |
4361 | case OPT_Wa_: |
4362 | { |
4363 | int prev, j; |
4364 | /* Pass the rest of this option to the assembler. */ |
4365 | |
4366 | /* Split the argument at commas. */ |
4367 | prev = 0; |
4368 | for (j = 0; arg[j]; j++) |
4369 | if (arg[j] == ',') |
4370 | { |
4371 | add_assembler_option (option: arg + prev, len: j - prev); |
4372 | prev = j + 1; |
4373 | } |
4374 | |
4375 | /* Record the part after the last comma. */ |
4376 | add_assembler_option (option: arg + prev, len: j - prev); |
4377 | } |
4378 | do_save = false; |
4379 | break; |
4380 | |
4381 | case OPT_Wp_: |
4382 | { |
4383 | int prev, j; |
4384 | /* Pass the rest of this option to the preprocessor. */ |
4385 | |
4386 | /* Split the argument at commas. */ |
4387 | prev = 0; |
4388 | for (j = 0; arg[j]; j++) |
4389 | if (arg[j] == ',') |
4390 | { |
4391 | add_preprocessor_option (option: arg + prev, len: j - prev); |
4392 | prev = j + 1; |
4393 | } |
4394 | |
4395 | /* Record the part after the last comma. */ |
4396 | add_preprocessor_option (option: arg + prev, len: j - prev); |
4397 | } |
4398 | do_save = false; |
4399 | break; |
4400 | |
4401 | case OPT_Wl_: |
4402 | { |
4403 | int prev, j; |
4404 | /* Split the argument at commas. */ |
4405 | prev = 0; |
4406 | for (j = 0; arg[j]; j++) |
4407 | if (arg[j] == ',') |
4408 | { |
4409 | add_infile (name: save_string (arg + prev, j - prev), language: "*" ); |
4410 | prev = j + 1; |
4411 | } |
4412 | /* Record the part after the last comma. */ |
4413 | add_infile (name: arg + prev, language: "*" ); |
4414 | } |
4415 | do_save = false; |
4416 | break; |
4417 | |
4418 | case OPT_Xlinker: |
4419 | add_infile (name: arg, language: "*" ); |
4420 | do_save = false; |
4421 | break; |
4422 | |
4423 | case OPT_Xpreprocessor: |
4424 | add_preprocessor_option (option: arg, len: strlen (s: arg)); |
4425 | do_save = false; |
4426 | break; |
4427 | |
4428 | case OPT_Xassembler: |
4429 | add_assembler_option (option: arg, len: strlen (s: arg)); |
4430 | do_save = false; |
4431 | break; |
4432 | |
4433 | case OPT_l: |
4434 | /* POSIX allows separation of -l and the lib arg; canonicalize |
4435 | by concatenating -l with its arg */ |
4436 | add_infile (name: concat ("-l" , arg, NULL), language: "*" ); |
4437 | |
4438 | /* Forward to offloading compilation '-l[...]' flags for standard, |
4439 | well-known libraries. */ |
4440 | /* Doing this processing here means that we don't get to see libraries |
4441 | injected via specs, such as '-lquadmath' injected via |
4442 | '[build]/[target]/libgfortran/libgfortran.spec'. However, this issue |
4443 | is not actually relevant for the current set of host/offloading |
4444 | configurations. */ |
4445 | if (ENABLE_OFFLOADING) |
4446 | forward_offload_option (opt_index, arg, validated); |
4447 | |
4448 | do_save = false; |
4449 | break; |
4450 | |
4451 | case OPT_L: |
4452 | /* Similarly, canonicalize -L for linkers that may not accept |
4453 | separate arguments. */ |
4454 | save_switch (opt: concat ("-L" , arg, NULL), n_args: 0, NULL, validated, known: true); |
4455 | return true; |
4456 | |
4457 | case OPT_F: |
4458 | /* Likewise -F. */ |
4459 | save_switch (opt: concat ("-F" , arg, NULL), n_args: 0, NULL, validated, known: true); |
4460 | return true; |
4461 | |
4462 | case OPT_save_temps: |
4463 | if (!save_temps_flag) |
4464 | save_temps_flag = SAVE_TEMPS_DUMP; |
4465 | validated = true; |
4466 | break; |
4467 | |
4468 | case OPT_save_temps_: |
4469 | if (strcmp (s1: arg, s2: "cwd" ) == 0) |
4470 | save_temps_flag = SAVE_TEMPS_CWD; |
4471 | else if (strcmp (s1: arg, s2: "obj" ) == 0 |
4472 | || strcmp (s1: arg, s2: "object" ) == 0) |
4473 | save_temps_flag = SAVE_TEMPS_OBJ; |
4474 | else |
4475 | fatal_error (input_location, "%qs is an unknown %<-save-temps%> option" , |
4476 | decoded->orig_option_with_args_text); |
4477 | save_temps_overrides_dumpdir = true; |
4478 | break; |
4479 | |
4480 | case OPT_dumpdir: |
4481 | free (ptr: dumpdir); |
4482 | dumpdir = xstrdup (arg); |
4483 | save_temps_overrides_dumpdir = false; |
4484 | break; |
4485 | |
4486 | case OPT_dumpbase: |
4487 | free (ptr: dumpbase); |
4488 | dumpbase = xstrdup (arg); |
4489 | break; |
4490 | |
4491 | case OPT_dumpbase_ext: |
4492 | free (ptr: dumpbase_ext); |
4493 | dumpbase_ext = xstrdup (arg); |
4494 | break; |
4495 | |
4496 | case OPT_no_canonical_prefixes: |
4497 | /* Already handled as a special case, so ignored here. */ |
4498 | do_save = false; |
4499 | break; |
4500 | |
4501 | case OPT_pipe: |
4502 | validated = true; |
4503 | /* These options set the variables specified in common.opt |
4504 | automatically, but do need to be saved for spec |
4505 | processing. */ |
4506 | break; |
4507 | |
4508 | case OPT_specs_: |
4509 | { |
4510 | struct user_specs *user = XNEW (struct user_specs); |
4511 | |
4512 | user->next = (struct user_specs *) 0; |
4513 | user->filename = arg; |
4514 | if (user_specs_tail) |
4515 | user_specs_tail->next = user; |
4516 | else |
4517 | user_specs_head = user; |
4518 | user_specs_tail = user; |
4519 | } |
4520 | validated = true; |
4521 | break; |
4522 | |
4523 | case OPT__sysroot_: |
4524 | target_system_root = arg; |
4525 | target_system_root_changed = 1; |
4526 | /* Saving this option is useful to let self-specs decide to |
4527 | provide a default one. */ |
4528 | do_save = true; |
4529 | validated = true; |
4530 | break; |
4531 | |
4532 | case OPT_time_: |
4533 | if (report_times_to_file) |
4534 | fclose (stream: report_times_to_file); |
4535 | report_times_to_file = fopen (filename: arg, modes: "a" ); |
4536 | do_save = false; |
4537 | break; |
4538 | |
4539 | case OPT____: |
4540 | /* "-###" |
4541 | This is similar to -v except that there is no execution |
4542 | of the commands and the echoed arguments are quoted. It |
4543 | is intended for use in shell scripts to capture the |
4544 | driver-generated command line. */ |
4545 | verbose_only_flag++; |
4546 | verbose_flag = 1; |
4547 | do_save = false; |
4548 | break; |
4549 | |
4550 | case OPT_B: |
4551 | { |
4552 | size_t len = strlen (s: arg); |
4553 | |
4554 | /* Catch the case where the user has forgotten to append a |
4555 | directory separator to the path. Note, they may be using |
4556 | -B to add an executable name prefix, eg "i386-elf-", in |
4557 | order to distinguish between multiple installations of |
4558 | GCC in the same directory. Hence we must check to see |
4559 | if appending a directory separator actually makes a |
4560 | valid directory name. */ |
4561 | if (!IS_DIR_SEPARATOR (arg[len - 1]) |
4562 | && is_directory (arg, false)) |
4563 | { |
4564 | char *tmp = XNEWVEC (char, len + 2); |
4565 | strcpy (dest: tmp, src: arg); |
4566 | tmp[len] = DIR_SEPARATOR; |
4567 | tmp[++len] = 0; |
4568 | arg = tmp; |
4569 | } |
4570 | |
4571 | add_prefix (pprefix: &exec_prefixes, prefix: arg, NULL, |
4572 | priority: PREFIX_PRIORITY_B_OPT, require_machine_suffix: 0, os_multilib: 0); |
4573 | add_prefix (pprefix: &startfile_prefixes, prefix: arg, NULL, |
4574 | priority: PREFIX_PRIORITY_B_OPT, require_machine_suffix: 0, os_multilib: 0); |
4575 | add_prefix (pprefix: &include_prefixes, prefix: arg, NULL, |
4576 | priority: PREFIX_PRIORITY_B_OPT, require_machine_suffix: 0, os_multilib: 0); |
4577 | } |
4578 | validated = true; |
4579 | break; |
4580 | |
4581 | case OPT_E: |
4582 | have_E = true; |
4583 | break; |
4584 | |
4585 | case OPT_x: |
4586 | spec_lang = arg; |
4587 | if (!strcmp (s1: spec_lang, s2: "none" )) |
4588 | /* Suppress the warning if -xnone comes after the last input |
4589 | file, because alternate command interfaces like g++ might |
4590 | find it useful to place -xnone after each input file. */ |
4591 | spec_lang = 0; |
4592 | else |
4593 | last_language_n_infiles = n_infiles; |
4594 | do_save = false; |
4595 | break; |
4596 | |
4597 | case OPT_o: |
4598 | have_o = 1; |
4599 | #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX) |
4600 | arg = convert_filename (arg, ! have_c, 0); |
4601 | #endif |
4602 | output_file = arg; |
4603 | /* On some systems, ld cannot handle "-o" without a space. So |
4604 | split the option from its argument. */ |
4605 | save_switch (opt: "-o" , n_args: 1, args: &arg, validated, known: true); |
4606 | return true; |
4607 | |
4608 | #ifdef ENABLE_DEFAULT_PIE |
4609 | case OPT_pie: |
4610 | /* -pie is turned on by default. */ |
4611 | #endif |
4612 | |
4613 | case OPT_static_libgcc: |
4614 | case OPT_shared_libgcc: |
4615 | case OPT_static_libgfortran: |
4616 | case OPT_static_libquadmath: |
4617 | case OPT_static_libphobos: |
4618 | case OPT_static_libgm2: |
4619 | case OPT_static_libstdc__: |
4620 | /* These are always valid; gcc.cc itself understands the first two |
4621 | gfortranspec.cc understands -static-libgfortran, |
4622 | libgfortran.spec handles -static-libquadmath, |
4623 | d-spec.cc understands -static-libphobos, |
4624 | gm2spec.cc understands -static-libgm2, |
4625 | and g++spec.cc understands -static-libstdc++. */ |
4626 | validated = true; |
4627 | break; |
4628 | |
4629 | case OPT_fwpa: |
4630 | flag_wpa = "" ; |
4631 | break; |
4632 | |
4633 | case OPT_foffload_options_: |
4634 | check_foffload_target_names (arg); |
4635 | break; |
4636 | |
4637 | case OPT_foffload_: |
4638 | handle_foffload_option (arg); |
4639 | if (arg[0] == '-' || NULL != strchr (s: arg, c: '=')) |
4640 | save_switch (opt: concat ("-foffload-options=" , arg, NULL), |
4641 | n_args: 0, NULL, validated, known: true); |
4642 | do_save = false; |
4643 | break; |
4644 | |
4645 | case OPT_gcodeview: |
4646 | add_infile (name: "--pdb=" , language: "*" ); |
4647 | break; |
4648 | |
4649 | default: |
4650 | /* Various driver options need no special processing at this |
4651 | point, having been handled in a prescan above or being |
4652 | handled by specs. */ |
4653 | break; |
4654 | } |
4655 | |
4656 | if (do_save) |
4657 | save_switch (opt: decoded->canonical_option[0], |
4658 | n_args: decoded->canonical_option_num_elements - 1, |
4659 | args: &decoded->canonical_option[1], validated, known: true); |
4660 | return true; |
4661 | } |
4662 | |
4663 | /* Return true if F2 is F1 followed by a single suffix, i.e., by a |
4664 | period and additional characters other than a period. */ |
4665 | |
4666 | static inline bool |
4667 | adds_single_suffix_p (const char *f2, const char *f1) |
4668 | { |
4669 | size_t len = strlen (s: f1); |
4670 | |
4671 | return (strncmp (s1: f1, s2: f2, n: len) == 0 |
4672 | && f2[len] == '.' |
4673 | && strchr (s: f2 + len + 1, c: '.') == NULL); |
4674 | } |
4675 | |
4676 | /* Put the driver's standard set of option handlers in *HANDLERS. */ |
4677 | |
4678 | static void |
4679 | set_option_handlers (struct cl_option_handlers *handlers) |
4680 | { |
4681 | handlers->unknown_option_callback = driver_unknown_option_callback; |
4682 | handlers->wrong_lang_callback = driver_wrong_lang_callback; |
4683 | handlers->num_handlers = 3; |
4684 | handlers->handlers[0].handler = driver_handle_option; |
4685 | handlers->handlers[0].mask = CL_DRIVER; |
4686 | handlers->handlers[1].handler = common_handle_option; |
4687 | handlers->handlers[1].mask = CL_COMMON; |
4688 | handlers->handlers[2].handler = target_handle_option; |
4689 | handlers->handlers[2].mask = CL_TARGET; |
4690 | } |
4691 | |
4692 | |
4693 | /* Return the index into infiles for the single non-library |
4694 | non-lto-wpa input file, -1 if there isn't any, or -2 if there is |
4695 | more than one. */ |
4696 | static inline int |
4697 | single_input_file_index () |
4698 | { |
4699 | int ret = -1; |
4700 | |
4701 | for (int i = 0; i < n_infiles; i++) |
4702 | { |
4703 | if (infiles[i].language |
4704 | && (infiles[i].language[0] == '*' |
4705 | || (flag_wpa |
4706 | && strcmp (s1: infiles[i].language, s2: "lto" ) == 0))) |
4707 | continue; |
4708 | |
4709 | if (ret != -1) |
4710 | return -2; |
4711 | |
4712 | ret = i; |
4713 | } |
4714 | |
4715 | return ret; |
4716 | } |
4717 | |
4718 | /* Create the vector `switches' and its contents. |
4719 | Store its length in `n_switches'. */ |
4720 | |
4721 | static void |
4722 | process_command (unsigned int decoded_options_count, |
4723 | struct cl_decoded_option *decoded_options) |
4724 | { |
4725 | const char *temp; |
4726 | char *temp1; |
4727 | char *tooldir_prefix, *tooldir_prefix2; |
4728 | char *(*get_relative_prefix) (const char *, const char *, |
4729 | const char *) = NULL; |
4730 | struct cl_option_handlers handlers; |
4731 | unsigned int j; |
4732 | |
4733 | gcc_exec_prefix = env.get (name: "GCC_EXEC_PREFIX" ); |
4734 | |
4735 | n_switches = 0; |
4736 | n_infiles = 0; |
4737 | added_libraries = 0; |
4738 | |
4739 | /* Figure compiler version from version string. */ |
4740 | |
4741 | compiler_version = temp1 = xstrdup (version_string); |
4742 | |
4743 | for (; *temp1; ++temp1) |
4744 | { |
4745 | if (*temp1 == ' ') |
4746 | { |
4747 | *temp1 = '\0'; |
4748 | break; |
4749 | } |
4750 | } |
4751 | |
4752 | /* Handle any -no-canonical-prefixes flag early, to assign the function |
4753 | that builds relative prefixes. This function creates default search |
4754 | paths that are needed later in normal option handling. */ |
4755 | |
4756 | for (j = 1; j < decoded_options_count; j++) |
4757 | { |
4758 | if (decoded_options[j].opt_index == OPT_no_canonical_prefixes) |
4759 | { |
4760 | get_relative_prefix = make_relative_prefix_ignore_links; |
4761 | break; |
4762 | } |
4763 | } |
4764 | if (! get_relative_prefix) |
4765 | get_relative_prefix = make_relative_prefix; |
4766 | |
4767 | /* Set up the default search paths. If there is no GCC_EXEC_PREFIX, |
4768 | see if we can create it from the pathname specified in |
4769 | decoded_options[0].arg. */ |
4770 | |
4771 | gcc_libexec_prefix = standard_libexec_prefix; |
4772 | #ifndef VMS |
4773 | /* FIXME: make_relative_prefix doesn't yet work for VMS. */ |
4774 | if (!gcc_exec_prefix) |
4775 | { |
4776 | gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg, |
4777 | standard_bindir_prefix, |
4778 | standard_exec_prefix); |
4779 | gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg, |
4780 | standard_bindir_prefix, |
4781 | standard_libexec_prefix); |
4782 | if (gcc_exec_prefix) |
4783 | xputenv (string: concat ("GCC_EXEC_PREFIX=" , gcc_exec_prefix, NULL)); |
4784 | } |
4785 | else |
4786 | { |
4787 | /* make_relative_prefix requires a program name, but |
4788 | GCC_EXEC_PREFIX is typically a directory name with a trailing |
4789 | / (which is ignored by make_relative_prefix), so append a |
4790 | program name. */ |
4791 | char *tmp_prefix = concat (gcc_exec_prefix, "gcc" , NULL); |
4792 | gcc_libexec_prefix = get_relative_prefix (tmp_prefix, |
4793 | standard_exec_prefix, |
4794 | standard_libexec_prefix); |
4795 | |
4796 | /* The path is unrelocated, so fallback to the original setting. */ |
4797 | if (!gcc_libexec_prefix) |
4798 | gcc_libexec_prefix = standard_libexec_prefix; |
4799 | |
4800 | free (ptr: tmp_prefix); |
4801 | } |
4802 | #else |
4803 | #endif |
4804 | /* From this point onward, gcc_exec_prefix is non-null if the toolchain |
4805 | is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX |
4806 | or an automatically created GCC_EXEC_PREFIX from |
4807 | decoded_options[0].arg. */ |
4808 | |
4809 | /* Do language-specific adjustment/addition of flags. */ |
4810 | lang_specific_driver (&decoded_options, &decoded_options_count, |
4811 | &added_libraries); |
4812 | |
4813 | if (gcc_exec_prefix) |
4814 | { |
4815 | int len = strlen (s: gcc_exec_prefix); |
4816 | |
4817 | if (len > (int) sizeof ("/lib/gcc/" ) - 1 |
4818 | && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1]))) |
4819 | { |
4820 | temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/" ) + 1; |
4821 | if (IS_DIR_SEPARATOR (*temp) |
4822 | && filename_ncmp (s1: temp + 1, s2: "lib" , n: 3) == 0 |
4823 | && IS_DIR_SEPARATOR (temp[4]) |
4824 | && filename_ncmp (s1: temp + 5, s2: "gcc" , n: 3) == 0) |
4825 | len -= sizeof ("/lib/gcc/" ) - 1; |
4826 | } |
4827 | |
4828 | set_std_prefix (gcc_exec_prefix, len); |
4829 | add_prefix (pprefix: &exec_prefixes, prefix: gcc_libexec_prefix, component: "GCC" , |
4830 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 0); |
4831 | add_prefix (pprefix: &startfile_prefixes, prefix: gcc_exec_prefix, component: "GCC" , |
4832 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 0); |
4833 | } |
4834 | |
4835 | /* COMPILER_PATH and LIBRARY_PATH have values |
4836 | that are lists of directory names with colons. */ |
4837 | |
4838 | temp = env.get (name: "COMPILER_PATH" ); |
4839 | if (temp) |
4840 | { |
4841 | const char *startp, *endp; |
4842 | char *nstore = (char *) alloca (strlen (temp) + 3); |
4843 | |
4844 | startp = endp = temp; |
4845 | while (1) |
4846 | { |
4847 | if (*endp == PATH_SEPARATOR || *endp == 0) |
4848 | { |
4849 | strncpy (dest: nstore, src: startp, n: endp - startp); |
4850 | if (endp == startp) |
4851 | strcpy (dest: nstore, src: concat ("." , dir_separator_str, NULL)); |
4852 | else if (!IS_DIR_SEPARATOR (endp[-1])) |
4853 | { |
4854 | nstore[endp - startp] = DIR_SEPARATOR; |
4855 | nstore[endp - startp + 1] = 0; |
4856 | } |
4857 | else |
4858 | nstore[endp - startp] = 0; |
4859 | add_prefix (pprefix: &exec_prefixes, prefix: nstore, component: 0, |
4860 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 0); |
4861 | add_prefix (pprefix: &include_prefixes, prefix: nstore, component: 0, |
4862 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 0); |
4863 | if (*endp == 0) |
4864 | break; |
4865 | endp = startp = endp + 1; |
4866 | } |
4867 | else |
4868 | endp++; |
4869 | } |
4870 | } |
4871 | |
4872 | temp = env.get (LIBRARY_PATH_ENV); |
4873 | if (temp && *cross_compile == '0') |
4874 | { |
4875 | const char *startp, *endp; |
4876 | char *nstore = (char *) alloca (strlen (temp) + 3); |
4877 | |
4878 | startp = endp = temp; |
4879 | while (1) |
4880 | { |
4881 | if (*endp == PATH_SEPARATOR || *endp == 0) |
4882 | { |
4883 | strncpy (dest: nstore, src: startp, n: endp - startp); |
4884 | if (endp == startp) |
4885 | strcpy (dest: nstore, src: concat ("." , dir_separator_str, NULL)); |
4886 | else if (!IS_DIR_SEPARATOR (endp[-1])) |
4887 | { |
4888 | nstore[endp - startp] = DIR_SEPARATOR; |
4889 | nstore[endp - startp + 1] = 0; |
4890 | } |
4891 | else |
4892 | nstore[endp - startp] = 0; |
4893 | add_prefix (pprefix: &startfile_prefixes, prefix: nstore, NULL, |
4894 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 1); |
4895 | if (*endp == 0) |
4896 | break; |
4897 | endp = startp = endp + 1; |
4898 | } |
4899 | else |
4900 | endp++; |
4901 | } |
4902 | } |
4903 | |
4904 | /* Use LPATH like LIBRARY_PATH (for the CMU build program). */ |
4905 | temp = env.get (name: "LPATH" ); |
4906 | if (temp && *cross_compile == '0') |
4907 | { |
4908 | const char *startp, *endp; |
4909 | char *nstore = (char *) alloca (strlen (temp) + 3); |
4910 | |
4911 | startp = endp = temp; |
4912 | while (1) |
4913 | { |
4914 | if (*endp == PATH_SEPARATOR || *endp == 0) |
4915 | { |
4916 | strncpy (dest: nstore, src: startp, n: endp - startp); |
4917 | if (endp == startp) |
4918 | strcpy (dest: nstore, src: concat ("." , dir_separator_str, NULL)); |
4919 | else if (!IS_DIR_SEPARATOR (endp[-1])) |
4920 | { |
4921 | nstore[endp - startp] = DIR_SEPARATOR; |
4922 | nstore[endp - startp + 1] = 0; |
4923 | } |
4924 | else |
4925 | nstore[endp - startp] = 0; |
4926 | add_prefix (pprefix: &startfile_prefixes, prefix: nstore, NULL, |
4927 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 1); |
4928 | if (*endp == 0) |
4929 | break; |
4930 | endp = startp = endp + 1; |
4931 | } |
4932 | else |
4933 | endp++; |
4934 | } |
4935 | } |
4936 | |
4937 | /* Process the options and store input files and switches in their |
4938 | vectors. */ |
4939 | |
4940 | last_language_n_infiles = -1; |
4941 | |
4942 | set_option_handlers (&handlers); |
4943 | |
4944 | for (j = 1; j < decoded_options_count; j++) |
4945 | { |
4946 | switch (decoded_options[j].opt_index) |
4947 | { |
4948 | case OPT_S: |
4949 | case OPT_c: |
4950 | case OPT_E: |
4951 | have_c = 1; |
4952 | break; |
4953 | } |
4954 | if (have_c) |
4955 | break; |
4956 | } |
4957 | |
4958 | for (j = 1; j < decoded_options_count; j++) |
4959 | { |
4960 | if (decoded_options[j].opt_index == OPT_SPECIAL_input_file) |
4961 | { |
4962 | const char *arg = decoded_options[j].arg; |
4963 | |
4964 | #ifdef HAVE_TARGET_OBJECT_SUFFIX |
4965 | arg = convert_filename (arg, 0, access (arg, F_OK)); |
4966 | #endif |
4967 | add_infile (name: arg, language: spec_lang); |
4968 | |
4969 | continue; |
4970 | } |
4971 | |
4972 | read_cmdline_option (opts: &global_options, opts_set: &global_options_set, |
4973 | decoded: decoded_options + j, UNKNOWN_LOCATION, |
4974 | CL_DRIVER, handlers: &handlers, dc: global_dc); |
4975 | } |
4976 | |
4977 | /* If the user didn't specify any, default to all configured offload |
4978 | targets. */ |
4979 | if (ENABLE_OFFLOADING && offload_targets == NULL) |
4980 | { |
4981 | handle_foffload_option (OFFLOAD_TARGETS); |
4982 | #if OFFLOAD_DEFAULTED |
4983 | offload_targets_default = true; |
4984 | #endif |
4985 | } |
4986 | |
4987 | /* Handle -gtoggle as it would later in toplev.cc:process_options to |
4988 | make the debug-level-gt spec function work as expected. */ |
4989 | if (flag_gtoggle) |
4990 | { |
4991 | if (debug_info_level == DINFO_LEVEL_NONE) |
4992 | debug_info_level = DINFO_LEVEL_NORMAL; |
4993 | else |
4994 | debug_info_level = DINFO_LEVEL_NONE; |
4995 | } |
4996 | |
4997 | if (output_file |
4998 | && strcmp (s1: output_file, s2: "-" ) != 0 |
4999 | && strcmp (s1: output_file, HOST_BIT_BUCKET) != 0) |
5000 | { |
5001 | int i; |
5002 | for (i = 0; i < n_infiles; i++) |
5003 | if ((!infiles[i].language || infiles[i].language[0] != '*') |
5004 | && canonical_filename_eq (a: infiles[i].name, b: output_file)) |
5005 | fatal_error (input_location, |
5006 | "input file %qs is the same as output file" , |
5007 | output_file); |
5008 | } |
5009 | |
5010 | if (output_file != NULL && output_file[0] == '\0') |
5011 | fatal_error (input_location, "output filename may not be empty" ); |
5012 | |
5013 | /* -dumpdir and -save-temps=* both specify the location of aux/dump |
5014 | outputs; the one that appears last prevails. When compiling |
5015 | multiple sources, an explicit dumpbase (minus -ext) may be |
5016 | combined with an explicit or implicit dumpdir, whereas when |
5017 | linking, a specified or implied link output name (minus |
5018 | extension) may be combined with a prevailing -save-temps=* or an |
5019 | otherwise implied dumpdir, but not override a prevailing |
5020 | -dumpdir. Primary outputs (e.g., linker output when linking |
5021 | without -o, or .i, .s or .o outputs when processing multiple |
5022 | inputs with -E, -S or -c, respectively) are NOT affected by these |
5023 | -save-temps=/-dump* options, always landing in the current |
5024 | directory and with the same basename as the input when an output |
5025 | name is not given, but when they're intermediate outputs, they |
5026 | are named like other aux outputs, so the options affect their |
5027 | location and name. |
5028 | |
5029 | Here are some examples. There are several more in the |
5030 | documentation of -o and -dump*, and some quite exhaustive tests |
5031 | in gcc.misc-tests/outputs.exp. |
5032 | |
5033 | When compiling any number of sources, no -dump* nor |
5034 | -save-temps=*, all outputs in cwd without prefix: |
5035 | |
5036 | # gcc -c b.c -gsplit-dwarf |
5037 | -> cc1 [-dumpdir ./] -dumpbase b.c -dumpbase-ext .c # b.o b.dwo |
5038 | |
5039 | # gcc -c b.c d.c -gsplit-dwarf |
5040 | -> cc1 [-dumpdir ./] -dumpbase b.c -dumpbase-ext .c # b.o b.dwo |
5041 | && cc1 [-dumpdir ./] -dumpbase d.c -dumpbase-ext .c # d.o d.dwo |
5042 | |
5043 | When compiling and linking, no -dump* nor -save-temps=*, .o |
5044 | outputs are temporary, aux outputs land in the dir of the output, |
5045 | prefixed with the basename of the linker output: |
5046 | |
5047 | # gcc b.c d.c -o ab -gsplit-dwarf |
5048 | -> cc1 -dumpdir ab- -dumpbase b.c -dumpbase-ext .c # ab-b.dwo |
5049 | && cc1 -dumpdir ab- -dumpbase d.c -dumpbase-ext .c # ab-d.dwo |
5050 | && link ... -o ab |
5051 | |
5052 | # gcc b.c d.c [-o a.out] -gsplit-dwarf |
5053 | -> cc1 -dumpdir a- -dumpbase b.c -dumpbase-ext .c # a-b.dwo |
5054 | && cc1 -dumpdir a- -dumpbase d.c -dumpbase-ext .c # a-d.dwo |
5055 | && link ... [-o a.out] |
5056 | |
5057 | When compiling and linking, a prevailing -dumpdir fully overrides |
5058 | the prefix of aux outputs given by the output name: |
5059 | |
5060 | # gcc -dumpdir f b.c d.c -gsplit-dwarf [-o [dir/]whatever] |
5061 | -> cc1 -dumpdir f -dumpbase b.c -dumpbase-ext .c # fb.dwo |
5062 | && cc1 -dumpdir f -dumpbase d.c -dumpbase-ext .c # fd.dwo |
5063 | && link ... [-o whatever] |
5064 | |
5065 | When compiling multiple inputs, an explicit -dumpbase is combined |
5066 | with -dumpdir, affecting aux outputs, but not the .o outputs: |
5067 | |
5068 | # gcc -dumpdir f -dumpbase g- b.c d.c -gsplit-dwarf -c |
5069 | -> cc1 -dumpdir fg- -dumpbase b.c -dumpbase-ext .c # b.o fg-b.dwo |
5070 | && cc1 -dumpdir fg- -dumpbase d.c -dumpbase-ext .c # d.o fg-d.dwo |
5071 | |
5072 | When compiling and linking with -save-temps, the .o outputs that |
5073 | would have been temporary become aux outputs, so they get |
5074 | affected by -dump* flags: |
5075 | |
5076 | # gcc -dumpdir f -dumpbase g- -save-temps b.c d.c |
5077 | -> cc1 -dumpdir fg- -dumpbase b.c -dumpbase-ext .c # fg-b.o |
5078 | && cc1 -dumpdir fg- -dumpbase d.c -dumpbase-ext .c # fg-d.o |
5079 | && link |
5080 | |
5081 | If -save-temps=* prevails over -dumpdir, however, the explicit |
5082 | -dumpdir is discarded, as if it wasn't there. The basename of |
5083 | the implicit linker output, a.out or a.exe, becomes a- as the aux |
5084 | output prefix for all compilations: |
5085 | |
5086 | # gcc [-dumpdir f] -save-temps=cwd b.c d.c |
5087 | -> cc1 -dumpdir a- -dumpbase b.c -dumpbase-ext .c # a-b.o |
5088 | && cc1 -dumpdir a- -dumpbase d.c -dumpbase-ext .c # a-d.o |
5089 | && link |
5090 | |
5091 | A single -dumpbase, applying to multiple inputs, overrides the |
5092 | linker output name, implied or explicit, as the aux output prefix: |
5093 | |
5094 | # gcc [-dumpdir f] -dumpbase g- -save-temps=cwd b.c d.c |
5095 | -> cc1 -dumpdir g- -dumpbase b.c -dumpbase-ext .c # g-b.o |
5096 | && cc1 -dumpdir g- -dumpbase d.c -dumpbase-ext .c # g-d.o |
5097 | && link |
5098 | |
5099 | # gcc [-dumpdir f] -dumpbase g- -save-temps=cwd b.c d.c -o dir/h.out |
5100 | -> cc1 -dumpdir g- -dumpbase b.c -dumpbase-ext .c # g-b.o |
5101 | && cc1 -dumpdir g- -dumpbase d.c -dumpbase-ext .c # g-d.o |
5102 | && link -o dir/h.out |
5103 | |
5104 | Now, if the linker output is NOT overridden as a prefix, but |
5105 | -save-temps=* overrides implicit or explicit -dumpdir, the |
5106 | effective dump dir combines the dir selected by the -save-temps=* |
5107 | option with the basename of the specified or implied link output: |
5108 | |
5109 | # gcc [-dumpdir f] -save-temps=cwd b.c d.c -o dir/h.out |
5110 | -> cc1 -dumpdir h- -dumpbase b.c -dumpbase-ext .c # h-b.o |
5111 | && cc1 -dumpdir h- -dumpbase d.c -dumpbase-ext .c # h-d.o |
5112 | && link -o dir/h.out |
5113 | |
5114 | # gcc [-dumpdir f] -save-temps=obj b.c d.c -o dir/h.out |
5115 | -> cc1 -dumpdir dir/h- -dumpbase b.c -dumpbase-ext .c # dir/h-b.o |
5116 | && cc1 -dumpdir dir/h- -dumpbase d.c -dumpbase-ext .c # dir/h-d.o |
5117 | && link -o dir/h.out |
5118 | |
5119 | But then again, a single -dumpbase applying to multiple inputs |
5120 | gets used instead of the linker output basename in the combined |
5121 | dumpdir: |
5122 | |
5123 | # gcc [-dumpdir f] -dumpbase g- -save-temps=obj b.c d.c -o dir/h.out |
5124 | -> cc1 -dumpdir dir/g- -dumpbase b.c -dumpbase-ext .c # dir/g-b.o |
5125 | && cc1 -dumpdir dir/g- -dumpbase d.c -dumpbase-ext .c # dir/g-d.o |
5126 | && link -o dir/h.out |
5127 | |
5128 | With a single input being compiled, the output basename does NOT |
5129 | affect the dumpdir prefix. |
5130 | |
5131 | # gcc -save-temps=obj b.c -gsplit-dwarf -c -o dir/b.o |
5132 | -> cc1 -dumpdir dir/ -dumpbase b.c -dumpbase-ext .c # dir/b.o dir/b.dwo |
5133 | |
5134 | but when compiling and linking even a single file, it does: |
5135 | |
5136 | # gcc -save-temps=obj b.c -o dir/h.out |
5137 | -> cc1 -dumpdir dir/h- -dumpbase b.c -dumpbase-ext .c # dir/h-b.o |
5138 | |
5139 | unless an explicit -dumpdir prevails: |
5140 | |
5141 | # gcc -save-temps[=obj] -dumpdir g- b.c -o dir/h.out |
5142 | -> cc1 -dumpdir g- -dumpbase b.c -dumpbase-ext .c # g-b.o |
5143 | |
5144 | */ |
5145 | |
5146 | bool explicit_dumpdir = dumpdir; |
5147 | |
5148 | if ((!save_temps_overrides_dumpdir && explicit_dumpdir) |
5149 | || (output_file && not_actual_file_p (output_file))) |
5150 | { |
5151 | /* Do nothing. */ |
5152 | } |
5153 | |
5154 | /* If -save-temps=obj and -o name, create the prefix to use for %b. |
5155 | Otherwise just make -save-temps=obj the same as -save-temps=cwd. */ |
5156 | else if (save_temps_flag != SAVE_TEMPS_CWD && output_file != NULL) |
5157 | { |
5158 | free (ptr: dumpdir); |
5159 | dumpdir = NULL; |
5160 | temp = lbasename (output_file); |
5161 | if (temp != output_file) |
5162 | dumpdir = xstrndup (output_file, |
5163 | strlen (s: output_file) - strlen (s: temp)); |
5164 | } |
5165 | else if (dumpdir) |
5166 | { |
5167 | free (ptr: dumpdir); |
5168 | dumpdir = NULL; |
5169 | } |
5170 | |
5171 | if (save_temps_flag) |
5172 | save_temps_flag = SAVE_TEMPS_DUMP; |
5173 | |
5174 | /* If there is any pathname component in an explicit -dumpbase, it |
5175 | overrides dumpdir entirely, so discard it right away. Although |
5176 | the presence of an explicit -dumpdir matters for the driver, it |
5177 | shouldn't matter for other processes, that get all that's needed |
5178 | from the -dumpdir and -dumpbase always passed to them. */ |
5179 | if (dumpdir && dumpbase && lbasename (dumpbase) != dumpbase) |
5180 | { |
5181 | free (ptr: dumpdir); |
5182 | dumpdir = NULL; |
5183 | } |
5184 | |
5185 | /* Check that dumpbase_ext matches the end of dumpbase, drop it |
5186 | otherwise. */ |
5187 | if (dumpbase_ext && dumpbase && *dumpbase) |
5188 | { |
5189 | int lendb = strlen (s: dumpbase); |
5190 | int lendbx = strlen (s: dumpbase_ext); |
5191 | |
5192 | /* -dumpbase-ext must be a suffix proper; discard it if it |
5193 | matches all of -dumpbase, as that would make for an empty |
5194 | basename. */ |
5195 | if (lendbx >= lendb |
5196 | || strcmp (s1: dumpbase + lendb - lendbx, s2: dumpbase_ext) != 0) |
5197 | { |
5198 | free (ptr: dumpbase_ext); |
5199 | dumpbase_ext = NULL; |
5200 | } |
5201 | } |
5202 | |
5203 | /* -dumpbase with multiple sources goes into dumpdir. With a single |
5204 | source, it does only if linking and if dumpdir was not explicitly |
5205 | specified. */ |
5206 | if (dumpbase && *dumpbase |
5207 | && (single_input_file_index () == -2 |
5208 | || (!have_c && !explicit_dumpdir))) |
5209 | { |
5210 | char *prefix; |
5211 | |
5212 | if (dumpbase_ext) |
5213 | /* We checked that they match above. */ |
5214 | dumpbase[strlen (s: dumpbase) - strlen (s: dumpbase_ext)] = '\0'; |
5215 | |
5216 | if (dumpdir) |
5217 | prefix = concat (dumpdir, dumpbase, "-" , NULL); |
5218 | else |
5219 | prefix = concat (dumpbase, "-" , NULL); |
5220 | |
5221 | free (ptr: dumpdir); |
5222 | free (ptr: dumpbase); |
5223 | free (ptr: dumpbase_ext); |
5224 | dumpbase = dumpbase_ext = NULL; |
5225 | dumpdir = prefix; |
5226 | dumpdir_trailing_dash_added = true; |
5227 | } |
5228 | |
5229 | /* If dumpbase was not brought into dumpdir but we're linking, bring |
5230 | output_file into dumpdir unless dumpdir was explicitly specified. |
5231 | The test for !explicit_dumpdir is further below, because we want |
5232 | to use the obase computation for a ghost outbase, passed to |
5233 | GCC_COLLECT_OPTIONS. */ |
5234 | else if (!have_c && (!explicit_dumpdir || (dumpbase && !*dumpbase))) |
5235 | { |
5236 | /* If we get here, we know dumpbase was not specified, or it was |
5237 | specified as an empty string. If it was anything else, it |
5238 | would have combined with dumpdir above, because the condition |
5239 | for dumpbase to be used when present is broader than the |
5240 | condition that gets us here. */ |
5241 | gcc_assert (!dumpbase || !*dumpbase); |
5242 | |
5243 | const char *obase; |
5244 | char *tofree = NULL; |
5245 | if (!output_file || not_actual_file_p (output_file)) |
5246 | obase = "a" ; |
5247 | else |
5248 | { |
5249 | obase = lbasename (output_file); |
5250 | size_t blen = strlen (s: obase), xlen; |
5251 | /* Drop the suffix if it's dumpbase_ext, if given, |
5252 | otherwise .exe or the target executable suffix, or if the |
5253 | output was explicitly named a.out, but not otherwise. */ |
5254 | if (dumpbase_ext |
5255 | ? (blen > (xlen = strlen (s: dumpbase_ext)) |
5256 | && strcmp (s1: (temp = (obase + blen - xlen)), |
5257 | s2: dumpbase_ext) == 0) |
5258 | : ((temp = strrchr (s: obase + 1, c: '.')) |
5259 | && (xlen = strlen (s: temp)) |
5260 | && (strcmp (s1: temp, s2: ".exe" ) == 0 |
5261 | #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) |
5262 | || strcmp (temp, TARGET_EXECUTABLE_SUFFIX) == 0 |
5263 | #endif |
5264 | || strcmp (s1: obase, s2: "a.out" ) == 0))) |
5265 | { |
5266 | tofree = xstrndup (obase, blen - xlen); |
5267 | obase = tofree; |
5268 | } |
5269 | } |
5270 | |
5271 | /* We wish to save this basename to the -dumpdir passed through |
5272 | GCC_COLLECT_OPTIONS within maybe_run_linker, for e.g. LTO, |
5273 | but we do NOT wish to add it to e.g. %b, so we keep |
5274 | outbase_length as zero. */ |
5275 | gcc_assert (!outbase); |
5276 | outbase_length = 0; |
5277 | |
5278 | /* If we're building [dir1/]foo[.exe] out of a single input |
5279 | [dir2/]foo.c that shares the same basename, dump to |
5280 | [dir2/]foo.c.* rather than duplicating the basename into |
5281 | [dir2/]foo-foo.c.*. */ |
5282 | int idxin; |
5283 | if (dumpbase |
5284 | || ((idxin = single_input_file_index ()) >= 0 |
5285 | && adds_single_suffix_p (f2: lbasename (infiles[idxin].name), |
5286 | f1: obase))) |
5287 | { |
5288 | if (obase == tofree) |
5289 | outbase = tofree; |
5290 | else |
5291 | { |
5292 | outbase = xstrdup (obase); |
5293 | free (ptr: tofree); |
5294 | } |
5295 | obase = tofree = NULL; |
5296 | } |
5297 | else |
5298 | { |
5299 | if (dumpdir) |
5300 | { |
5301 | char *p = concat (dumpdir, obase, "-" , NULL); |
5302 | free (ptr: dumpdir); |
5303 | dumpdir = p; |
5304 | } |
5305 | else |
5306 | dumpdir = concat (obase, "-" , NULL); |
5307 | |
5308 | dumpdir_trailing_dash_added = true; |
5309 | |
5310 | free (ptr: tofree); |
5311 | obase = tofree = NULL; |
5312 | } |
5313 | |
5314 | if (!explicit_dumpdir || dumpbase) |
5315 | { |
5316 | /* Absent -dumpbase and present -dumpbase-ext have been applied |
5317 | to the linker output name, so compute fresh defaults for each |
5318 | compilation. */ |
5319 | free (ptr: dumpbase_ext); |
5320 | dumpbase_ext = NULL; |
5321 | } |
5322 | } |
5323 | |
5324 | /* Now, if we're compiling, or if we haven't used the dumpbase |
5325 | above, then outbase (%B) is derived from dumpbase, if given, or |
5326 | from the output name, given or implied. We can't precompute |
5327 | implied output names, but that's ok, since they're derived from |
5328 | input names. Just make sure we skip this if dumpbase is the |
5329 | empty string: we want to use input names then, so don't set |
5330 | outbase. */ |
5331 | if ((dumpbase || have_c) |
5332 | && !(dumpbase && !*dumpbase)) |
5333 | { |
5334 | gcc_assert (!outbase); |
5335 | |
5336 | if (dumpbase) |
5337 | { |
5338 | gcc_assert (single_input_file_index () != -2); |
5339 | /* We do not want lbasename here; dumpbase with dirnames |
5340 | overrides dumpdir entirely, even if dumpdir is |
5341 | specified. */ |
5342 | if (dumpbase_ext) |
5343 | /* We've already checked above that the suffix matches. */ |
5344 | outbase = xstrndup (dumpbase, |
5345 | strlen (s: dumpbase) - strlen (s: dumpbase_ext)); |
5346 | else |
5347 | outbase = xstrdup (dumpbase); |
5348 | } |
5349 | else if (output_file && !not_actual_file_p (output_file)) |
5350 | { |
5351 | outbase = xstrdup (lbasename (output_file)); |
5352 | char *p = strrchr (s: outbase + 1, c: '.'); |
5353 | if (p) |
5354 | *p = '\0'; |
5355 | } |
5356 | |
5357 | if (outbase) |
5358 | outbase_length = strlen (s: outbase); |
5359 | } |
5360 | |
5361 | /* If there is any pathname component in an explicit -dumpbase, do |
5362 | not use dumpdir, but retain it to pass it on to the compiler. */ |
5363 | if (dumpdir) |
5364 | dumpdir_length = strlen (s: dumpdir); |
5365 | else |
5366 | dumpdir_length = 0; |
5367 | |
5368 | /* Check that dumpbase_ext, if still present, still matches the end |
5369 | of dumpbase, if present, and drop it otherwise. We only retained |
5370 | it above when dumpbase was absent to maybe use it to drop the |
5371 | extension from output_name before combining it with dumpdir. We |
5372 | won't deal with -dumpbase-ext when -dumpbase is not explicitly |
5373 | given, even if just to activate backward-compatible dumpbase: |
5374 | dropping it on the floor is correct, expected and documented |
5375 | behavior. Attempting to deal with a -dumpbase-ext that might |
5376 | match the end of some input filename, or of the combination of |
5377 | the output basename with the suffix of the input filename, |
5378 | possible with an intermediate .gk extension for -fcompare-debug, |
5379 | is just calling for trouble. */ |
5380 | if (dumpbase_ext) |
5381 | { |
5382 | if (!dumpbase || !*dumpbase) |
5383 | { |
5384 | free (ptr: dumpbase_ext); |
5385 | dumpbase_ext = NULL; |
5386 | } |
5387 | else |
5388 | gcc_assert (strcmp (dumpbase + strlen (dumpbase) |
5389 | - strlen (dumpbase_ext), dumpbase_ext) == 0); |
5390 | } |
5391 | |
5392 | if (save_temps_flag && use_pipes) |
5393 | { |
5394 | /* -save-temps overrides -pipe, so that temp files are produced */ |
5395 | if (save_temps_flag) |
5396 | warning (0, "%<-pipe%> ignored because %<-save-temps%> specified" ); |
5397 | use_pipes = 0; |
5398 | } |
5399 | |
5400 | if (!compare_debug) |
5401 | { |
5402 | const char *gcd = env.get (name: "GCC_COMPARE_DEBUG" ); |
5403 | |
5404 | if (gcd && gcd[0] == '-') |
5405 | { |
5406 | compare_debug = 2; |
5407 | compare_debug_opt = gcd; |
5408 | } |
5409 | else if (gcd && *gcd && strcmp (s1: gcd, s2: "0" )) |
5410 | { |
5411 | compare_debug = 3; |
5412 | compare_debug_opt = "-gtoggle" ; |
5413 | } |
5414 | } |
5415 | else if (compare_debug < 0) |
5416 | { |
5417 | compare_debug = 0; |
5418 | gcc_assert (!compare_debug_opt); |
5419 | } |
5420 | |
5421 | /* Set up the search paths. We add directories that we expect to |
5422 | contain GNU Toolchain components before directories specified by |
5423 | the machine description so that we will find GNU components (like |
5424 | the GNU assembler) before those of the host system. */ |
5425 | |
5426 | /* If we don't know where the toolchain has been installed, use the |
5427 | configured-in locations. */ |
5428 | if (!gcc_exec_prefix) |
5429 | { |
5430 | #ifndef OS2 |
5431 | add_prefix (pprefix: &exec_prefixes, prefix: standard_libexec_prefix, component: "GCC" , |
5432 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 1, os_multilib: 0); |
5433 | add_prefix (pprefix: &exec_prefixes, prefix: standard_libexec_prefix, component: "BINUTILS" , |
5434 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 2, os_multilib: 0); |
5435 | add_prefix (pprefix: &exec_prefixes, prefix: standard_exec_prefix, component: "BINUTILS" , |
5436 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 2, os_multilib: 0); |
5437 | #endif |
5438 | add_prefix (pprefix: &startfile_prefixes, prefix: standard_exec_prefix, component: "BINUTILS" , |
5439 | priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 1, os_multilib: 0); |
5440 | } |
5441 | |
5442 | gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix)); |
5443 | tooldir_prefix2 = concat (tooldir_base_prefix, spec_machine, |
5444 | dir_separator_str, NULL); |
5445 | |
5446 | /* Look for tools relative to the location from which the driver is |
5447 | running, or, if that is not available, the configured prefix. */ |
5448 | tooldir_prefix |
5449 | = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix, |
5450 | spec_host_machine, dir_separator_str, spec_version, |
5451 | accel_dir_suffix, dir_separator_str, tooldir_prefix2, NULL); |
5452 | free (ptr: tooldir_prefix2); |
5453 | |
5454 | add_prefix (pprefix: &exec_prefixes, |
5455 | prefix: concat (tooldir_prefix, "bin" , dir_separator_str, NULL), |
5456 | component: "BINUTILS" , priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 0); |
5457 | add_prefix (pprefix: &startfile_prefixes, |
5458 | prefix: concat (tooldir_prefix, "lib" , dir_separator_str, NULL), |
5459 | component: "BINUTILS" , priority: PREFIX_PRIORITY_LAST, require_machine_suffix: 0, os_multilib: 1); |
5460 | free (ptr: tooldir_prefix); |
5461 | |
5462 | #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS) |
5463 | /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix, |
5464 | then consider it to relocate with the rest of the GCC installation |
5465 | if GCC_EXEC_PREFIX is set. |
5466 | ``make_relative_prefix'' is not compiled for VMS, so don't call it. */ |
5467 | if (target_system_root && !target_system_root_changed && gcc_exec_prefix) |
5468 | { |
5469 | char *tmp_prefix = get_relative_prefix (decoded_options[0].arg, |
5470 | standard_bindir_prefix, |
5471 | target_system_root); |
5472 | if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0) |
5473 | { |
5474 | target_system_root = tmp_prefix; |
5475 | target_system_root_changed = 1; |
5476 | } |
5477 | } |
5478 | #endif |
5479 | |
5480 | /* More prefixes are enabled in main, after we read the specs file |
5481 | and determine whether this is cross-compilation or not. */ |
5482 | |
5483 | if (n_infiles != 0 && n_infiles == last_language_n_infiles && spec_lang != 0) |
5484 | warning (0, "%<-x %s%> after last input file has no effect" , spec_lang); |
5485 | |
5486 | /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG |
5487 | environment variable. */ |
5488 | if (compare_debug == 2 || compare_debug == 3) |
5489 | { |
5490 | const char *opt = concat ("-fcompare-debug=" , compare_debug_opt, NULL); |
5491 | save_switch (opt, n_args: 0, NULL, validated: false, known: true); |
5492 | compare_debug = 1; |
5493 | } |
5494 | |
5495 | /* Ensure we only invoke each subprocess once. */ |
5496 | if (n_infiles == 0 |
5497 | && (print_subprocess_help || print_help_list || print_version)) |
5498 | { |
5499 | /* Create a dummy input file, so that we can pass |
5500 | the help option on to the various sub-processes. */ |
5501 | add_infile (name: "help-dummy" , language: "c" ); |
5502 | } |
5503 | |
5504 | /* Decide if undefined variable references are allowed in specs. */ |
5505 | |
5506 | /* -v alone is safe. --version and --help alone or together are safe. Note |
5507 | that -v would make them unsafe, as they'd then be run for subprocesses as |
5508 | well, the location of which might depend on variables possibly coming |
5509 | from self-specs. Note also that the command name is counted in |
5510 | decoded_options_count. */ |
5511 | |
5512 | unsigned help_version_count = 0; |
5513 | |
5514 | if (print_version) |
5515 | help_version_count++; |
5516 | |
5517 | if (print_help_list) |
5518 | help_version_count++; |
5519 | |
5520 | spec_undefvar_allowed = |
5521 | ((verbose_flag && decoded_options_count == 2) |
5522 | || help_version_count == decoded_options_count - 1); |
5523 | |
5524 | alloc_switch (); |
5525 | switches[n_switches].part1 = 0; |
5526 | alloc_infile (); |
5527 | infiles[n_infiles].name = 0; |
5528 | } |
5529 | |
5530 | /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS |
5531 | and place that in the environment. */ |
5532 | |
5533 | static void |
5534 | set_collect_gcc_options (void) |
5535 | { |
5536 | int i; |
5537 | int first_time; |
5538 | |
5539 | /* Build COLLECT_GCC_OPTIONS to have all of the options specified to |
5540 | the compiler. */ |
5541 | obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=" , |
5542 | sizeof ("COLLECT_GCC_OPTIONS=" ) - 1); |
5543 | |
5544 | first_time = true; |
5545 | for (i = 0; (int) i < n_switches; i++) |
5546 | { |
5547 | const char *const *args; |
5548 | const char *p, *q; |
5549 | if (!first_time) |
5550 | obstack_grow (&collect_obstack, " " , 1); |
5551 | |
5552 | first_time = false; |
5553 | |
5554 | /* Ignore elided switches. */ |
5555 | if ((switches[i].live_cond |
5556 | & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC)) |
5557 | == SWITCH_IGNORE) |
5558 | continue; |
5559 | |
5560 | obstack_grow (&collect_obstack, "'-" , 2); |
5561 | q = switches[i].part1; |
5562 | while ((p = strchr (s: q, c: '\''))) |
5563 | { |
5564 | obstack_grow (&collect_obstack, q, p - q); |
5565 | obstack_grow (&collect_obstack, "'\\''" , 4); |
5566 | q = ++p; |
5567 | } |
5568 | obstack_grow (&collect_obstack, q, strlen (q)); |
5569 | obstack_grow (&collect_obstack, "'" , 1); |
5570 | |
5571 | for (args = switches[i].args; args && *args; args++) |
5572 | { |
5573 | obstack_grow (&collect_obstack, " '" , 2); |
5574 | q = *args; |
5575 | while ((p = strchr (s: q, c: '\''))) |
5576 | { |
5577 | obstack_grow (&collect_obstack, q, p - q); |
5578 | obstack_grow (&collect_obstack, "'\\''" , 4); |
5579 | q = ++p; |
5580 | } |
5581 | obstack_grow (&collect_obstack, q, strlen (q)); |
5582 | obstack_grow (&collect_obstack, "'" , 1); |
5583 | } |
5584 | } |
5585 | |
5586 | if (dumpdir) |
5587 | { |
5588 | if (!first_time) |
5589 | obstack_grow (&collect_obstack, " " , 1); |
5590 | first_time = false; |
5591 | |
5592 | obstack_grow (&collect_obstack, "'-dumpdir' '" , 12); |
5593 | const char *p, *q; |
5594 | |
5595 | q = dumpdir; |
5596 | while ((p = strchr (s: q, c: '\''))) |
5597 | { |
5598 | obstack_grow (&collect_obstack, q, p - q); |
5599 | obstack_grow (&collect_obstack, "'\\''" , 4); |
5600 | q = ++p; |
5601 | } |
5602 | obstack_grow (&collect_obstack, q, strlen (q)); |
5603 | |
5604 | obstack_grow (&collect_obstack, "'" , 1); |
5605 | } |
5606 | |
5607 | obstack_grow (&collect_obstack, "\0" , 1); |
5608 | xputenv (XOBFINISH (&collect_obstack, char *)); |
5609 | } |
5610 | |
5611 | /* Process a spec string, accumulating and running commands. */ |
5612 | |
5613 | /* These variables describe the input file name. |
5614 | input_file_number is the index on outfiles of this file, |
5615 | so that the output file name can be stored for later use by %o. |
5616 | input_basename is the start of the part of the input file |
5617 | sans all directory names, and basename_length is the number |
5618 | of characters starting there excluding the suffix .c or whatever. */ |
5619 | |
5620 | static const char *gcc_input_filename; |
5621 | static int input_file_number; |
5622 | size_t input_filename_length; |
5623 | static int basename_length; |
5624 | static int suffixed_basename_length; |
5625 | static const char *input_basename; |
5626 | static const char *input_suffix; |
5627 | #ifndef HOST_LACKS_INODE_NUMBERS |
5628 | static struct stat input_stat; |
5629 | #endif |
5630 | static int input_stat_set; |
5631 | |
5632 | /* The compiler used to process the current input file. */ |
5633 | static struct compiler *input_file_compiler; |
5634 | |
5635 | /* These are variables used within do_spec and do_spec_1. */ |
5636 | |
5637 | /* Nonzero if an arg has been started and not yet terminated |
5638 | (with space, tab or newline). */ |
5639 | static int arg_going; |
5640 | |
5641 | /* Nonzero means %d or %g has been seen; the next arg to be terminated |
5642 | is a temporary file name. */ |
5643 | static int delete_this_arg; |
5644 | |
5645 | /* Nonzero means %w has been seen; the next arg to be terminated |
5646 | is the output file name of this compilation. */ |
5647 | static int this_is_output_file; |
5648 | |
5649 | /* Nonzero means %s has been seen; the next arg to be terminated |
5650 | is the name of a library file and we should try the standard |
5651 | search dirs for it. */ |
5652 | static int this_is_library_file; |
5653 | |
5654 | /* Nonzero means %T has been seen; the next arg to be terminated |
5655 | is the name of a linker script and we should try all of the |
5656 | standard search dirs for it. If it is found insert a --script |
5657 | command line switch and then substitute the full path in place, |
5658 | otherwise generate an error message. */ |
5659 | static int this_is_linker_script; |
5660 | |
5661 | /* Nonzero means that the input of this command is coming from a pipe. */ |
5662 | static int input_from_pipe; |
5663 | |
5664 | /* Nonnull means substitute this for any suffix when outputting a switches |
5665 | arguments. */ |
5666 | static const char *suffix_subst; |
5667 | |
5668 | /* If there is an argument being accumulated, terminate it and store it. */ |
5669 | |
5670 | static void |
5671 | end_going_arg (void) |
5672 | { |
5673 | if (arg_going) |
5674 | { |
5675 | const char *string; |
5676 | |
5677 | obstack_1grow (&obstack, 0); |
5678 | string = XOBFINISH (&obstack, const char *); |
5679 | if (this_is_library_file) |
5680 | string = find_file (string); |
5681 | if (this_is_linker_script) |
5682 | { |
5683 | char * full_script_path = find_a_file (pprefix: &startfile_prefixes, name: string, R_OK, do_multi: true); |
5684 | |
5685 | if (full_script_path == NULL) |
5686 | { |
5687 | error ("unable to locate default linker script %qs in the library search paths" , string); |
5688 | /* Script was not found on search path. */ |
5689 | return; |
5690 | } |
5691 | store_arg (arg: "--script" , delete_always: false, delete_failure: false); |
5692 | |
---|