1 | /* Specific flags and argument handling of the C front-end. |
2 | Copyright (C) 1999-2023 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 | #include "config.h" |
21 | #include "system.h" |
22 | #include "coretypes.h" |
23 | #include "tm.h" |
24 | #include "opts.h" |
25 | |
26 | /* Filter command line before processing by the gcc driver proper. */ |
27 | void |
28 | lang_specific_driver (struct cl_decoded_option **in_decoded_options ATTRIBUTE_UNUSED, |
29 | unsigned int *in_decoded_options_count ATTRIBUTE_UNUSED, |
30 | int *in_added_libraries ATTRIBUTE_UNUSED) |
31 | { |
32 | /* Systems which use the NeXT runtime by default should arrange |
33 | for the shared libgcc to be used when -fgnu-runtime is passed |
34 | through specs. */ |
35 | #if defined(ENABLE_SHARED_LIBGCC) && ! NEXT_OBJC_RUNTIME |
36 | unsigned int i; |
37 | |
38 | /* The new argument list will be contained in this. */ |
39 | struct cl_decoded_option *new_decoded_options; |
40 | |
41 | /* True if we should add -shared-libgcc to the command-line. */ |
42 | int shared_libgcc = 0; |
43 | |
44 | /* The total number of arguments with the new stuff. */ |
45 | unsigned int argc; |
46 | |
47 | /* The argument list. */ |
48 | struct cl_decoded_option *decoded_options; |
49 | |
50 | argc = *in_decoded_options_count; |
51 | decoded_options = *in_decoded_options; |
52 | |
53 | for (i = 1; i < argc; i++) |
54 | { |
55 | switch (decoded_options[i].opt_index) |
56 | { |
57 | case OPT_static_libgcc: |
58 | case OPT_static: |
59 | return; |
60 | |
61 | case OPT_SPECIAL_input_file: |
62 | { |
63 | const char *file = decoded_options[i].arg; |
64 | int len; |
65 | |
66 | /* If the filename ends in .m or .mi, we are compiling |
67 | ObjC and want to pass -shared-libgcc. */ |
68 | len = strlen (s: file); |
69 | if ((len > 2 && file[len - 2] == '.' && file[len - 1] == 'm') |
70 | || (len > 3 && file[len - 3] == '.' && file[len - 2] == 'm' |
71 | && file[len - 1] == 'i')) |
72 | shared_libgcc = 1; |
73 | } |
74 | break; |
75 | } |
76 | } |
77 | |
78 | if (shared_libgcc) |
79 | { |
80 | new_decoded_options = XNEWVEC (struct cl_decoded_option, argc + 1); |
81 | |
82 | i = 0; |
83 | do |
84 | { |
85 | new_decoded_options[i] = decoded_options[i]; |
86 | i++; |
87 | } |
88 | while (i < argc); |
89 | |
90 | generate_option (opt_index: OPT_shared_libgcc, NULL, value: 1, CL_DRIVER, |
91 | decoded: &new_decoded_options[i++]); |
92 | |
93 | *in_decoded_options_count = i; |
94 | *in_decoded_options = new_decoded_options; |
95 | } |
96 | #endif |
97 | } |
98 | |
99 | /* Called before linking. Returns 0 on success and -1 on failure. */ |
100 | int |
101 | lang_specific_pre_link (void) |
102 | { |
103 | return 0; /* Not used for C. */ |
104 | } |
105 | |
106 | /* Number of extra output files that lang_specific_pre_link may generate. */ |
107 | int = 0; /* Not used for C. */ |
108 | |