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Commit | Line | Data |
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0b6f2917 | 1 | /* C/ObjC/C++ command line option handling. |
2b6dd222 | 2 | Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. |
0b6f2917 NB |
3 | Contributed by Neil Booth. |
4 | ||
5 | This file is part of GCC. | |
6 | ||
7 | GCC is free software; you can redistribute it and/or modify it under | |
8 | the terms of the GNU General Public License as published by the Free | |
9 | Software Foundation; either version 2, or (at your option) any later | |
10 | version. | |
11 | ||
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GCC; see the file COPYING. If not, write to the Free | |
366ccddb KC |
19 | Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA |
20 | 02110-1301, USA. */ | |
0b6f2917 NB |
21 | |
22 | #include "config.h" | |
23 | #include "system.h" | |
4977bab6 ZW |
24 | #include "coretypes.h" |
25 | #include "tm.h" | |
0b6f2917 NB |
26 | #include "tree.h" |
27 | #include "c-common.h" | |
28 | #include "c-pragma.h" | |
29 | #include "flags.h" | |
30 | #include "toplev.h" | |
31 | #include "langhooks.h" | |
32 | #include "tree-inline.h" | |
33 | #include "diagnostic.h" | |
4b7091eb | 34 | #include "intl.h" |
5793b276 NB |
35 | #include "cppdefault.h" |
36 | #include "c-incpath.h" | |
23345bbb | 37 | #include "debug.h" /* For debug_hooks. */ |
2772ef3e | 38 | #include "opts.h" |
d7b42618 | 39 | #include "options.h" |
c6e83800 | 40 | #include "mkdeps.h" |
5793b276 | 41 | |
b1822ccc NB |
42 | #ifndef DOLLARS_IN_IDENTIFIERS |
43 | # define DOLLARS_IN_IDENTIFIERS true | |
44 | #endif | |
45 | ||
5793b276 NB |
46 | #ifndef TARGET_SYSTEM_ROOT |
47 | # define TARGET_SYSTEM_ROOT NULL | |
48 | #endif | |
0b6f2917 | 49 | |
7cd60054 AM |
50 | #ifndef TARGET_OPTF |
51 | #define TARGET_OPTF(ARG) | |
52 | #endif | |
53 | ||
f4ff5a69 | 54 | /* CPP's options. */ |
18bdccaa NB |
55 | static cpp_options *cpp_opts; |
56 | ||
460bd0e3 | 57 | /* Input filename. */ |
89e9faee | 58 | static const char *this_input_filename; |
460bd0e3 | 59 | |
76c3e73e NB |
60 | /* Filename and stream for preprocessed output. */ |
61 | static const char *out_fname; | |
62 | static FILE *out_stream; | |
63 | ||
64 | /* Append dependencies to deps_file. */ | |
65 | static bool deps_append; | |
66 | ||
f4ff5a69 NB |
67 | /* If dependency switches (-MF etc.) have been given. */ |
68 | static bool deps_seen; | |
69 | ||
5793b276 NB |
70 | /* If -v seen. */ |
71 | static bool verbose; | |
72 | ||
a67ec6ab FXC |
73 | /* If -lang-fortran seen. */ |
74 | static bool lang_fortran = false; | |
75 | ||
f4ff5a69 NB |
76 | /* Dependency output file. */ |
77 | static const char *deps_file; | |
78 | ||
5793b276 NB |
79 | /* The prefix given by -iprefix, if any. */ |
80 | static const char *iprefix; | |
81 | ||
2b6dd222 JM |
82 | /* The multilib directory given by -imultilib, if any. */ |
83 | static const char *imultilib; | |
84 | ||
5793b276 NB |
85 | /* The system root, if any. Overridden by -isysroot. */ |
86 | static const char *sysroot = TARGET_SYSTEM_ROOT; | |
87 | ||
88 | /* Zero disables all standard directories for headers. */ | |
89 | static bool std_inc = true; | |
90 | ||
91 | /* Zero disables the C++-specific standard directories for headers. */ | |
92 | static bool std_cxx_inc = true; | |
93 | ||
94 | /* If the quote chain has been split by -I-. */ | |
95 | static bool quote_chain_split; | |
96 | ||
23345bbb NB |
97 | /* If -Wunused-macros. */ |
98 | static bool warn_unused_macros; | |
99 | ||
e5b79219 RH |
100 | /* If -Wvariadic-macros. */ |
101 | static bool warn_variadic_macros = true; | |
102 | ||
b86f6cd9 NB |
103 | /* Number of deferred options. */ |
104 | static size_t deferred_count; | |
f4ff5a69 | 105 | |
23345bbb NB |
106 | /* Number of deferred options scanned for -include. */ |
107 | static size_t include_cursor; | |
108 | ||
2f6e4e97 | 109 | static void set_Wimplicit (int); |
2f6e4e97 AJ |
110 | static void handle_OPT_d (const char *); |
111 | static void set_std_cxx98 (int); | |
966541e3 | 112 | static void set_std_cxx0x (int); |
2f6e4e97 AJ |
113 | static void set_std_c89 (int, int); |
114 | static void set_std_c99 (int); | |
115 | static void check_deps_environment_vars (void); | |
116 | static void handle_deferred_opts (void); | |
117 | static void sanitize_cpp_opts (void); | |
118 | static void add_prefixed_path (const char *, size_t); | |
119 | static void push_command_line_include (void); | |
120 | static void cb_file_change (cpp_reader *, const struct line_map *); | |
8e9ea4d7 PB |
121 | static void cb_dir_change (cpp_reader *, const char *); |
122 | static void finish_options (void); | |
460bd0e3 NB |
123 | |
124 | #ifndef STDC_0_IN_SYSTEM_HEADERS | |
125 | #define STDC_0_IN_SYSTEM_HEADERS 0 | |
126 | #endif | |
0b6f2917 | 127 | |
2772ef3e | 128 | /* Holds switches parsed by c_common_handle_option (), but whose |
95bd1dd7 | 129 | handling is deferred to c_common_post_options (). */ |
2f6e4e97 | 130 | static void defer_opt (enum opt_code, const char *); |
f4ff5a69 NB |
131 | static struct deferred_opt |
132 | { | |
133 | enum opt_code code; | |
134 | const char *arg; | |
135 | } *deferred_opts; | |
136 | ||
cb66e385 NB |
137 | /* Complain that switch CODE expects an argument but none was |
138 | provided. OPT was the command-line option. Return FALSE to get | |
139 | the default message in opts.c, TRUE if we provide a specialized | |
140 | one. */ | |
141 | bool | |
142 | c_common_missing_argument (const char *opt, size_t code) | |
4b7091eb | 143 | { |
2772ef3e | 144 | switch (code) |
4b7091eb | 145 | { |
4b7091eb | 146 | default: |
cb66e385 NB |
147 | /* Pick up the default message. */ |
148 | return false; | |
4b7091eb | 149 | |
fef3106c | 150 | case OPT_fconstant_string_class_: |
bda67431 | 151 | error ("no class name specified with %qs", opt); |
4b7091eb | 152 | break; |
b4a93904 | 153 | |
c1bad961 | 154 | case OPT_A: |
bda67431 | 155 | error ("assertion missing after %qs", opt); |
c1bad961 NB |
156 | break; |
157 | ||
158 | case OPT_D: | |
159 | case OPT_U: | |
bda67431 | 160 | error ("macro name missing after %qs", opt); |
c1bad961 NB |
161 | break; |
162 | ||
94d1613b | 163 | case OPT_F: |
5793b276 NB |
164 | case OPT_I: |
165 | case OPT_idirafter: | |
166 | case OPT_isysroot: | |
167 | case OPT_isystem: | |
4bed3787 | 168 | case OPT_iquote: |
bda67431 | 169 | error ("missing path after %qs", opt); |
5793b276 NB |
170 | break; |
171 | ||
f4ff5a69 NB |
172 | case OPT_MF: |
173 | case OPT_MD: | |
174 | case OPT_MMD: | |
255c10b1 NB |
175 | case OPT_include: |
176 | case OPT_imacros: | |
b4a93904 | 177 | case OPT_o: |
bda67431 | 178 | error ("missing filename after %qs", opt); |
f4ff5a69 NB |
179 | break; |
180 | ||
181 | case OPT_MQ: | |
182 | case OPT_MT: | |
bda67431 | 183 | error ("missing makefile target after %qs", opt); |
b4a93904 | 184 | break; |
4b7091eb | 185 | } |
cb66e385 NB |
186 | |
187 | return true; | |
4b7091eb NB |
188 | } |
189 | ||
f4ff5a69 NB |
190 | /* Defer option CODE with argument ARG. */ |
191 | static void | |
2f6e4e97 | 192 | defer_opt (enum opt_code code, const char *arg) |
f4ff5a69 | 193 | { |
f4ff5a69 NB |
194 | deferred_opts[deferred_count].code = code; |
195 | deferred_opts[deferred_count].arg = arg; | |
196 | deferred_count++; | |
197 | } | |
198 | ||
0b6f2917 | 199 | /* Common initialization before parsing options. */ |
b86f6cd9 | 200 | unsigned int |
afd85c1a | 201 | c_common_init_options (unsigned int argc, const char **argv) |
0b6f2917 | 202 | { |
b86f6cd9 | 203 | static const unsigned int lang_flags[] = {CL_C, CL_ObjC, CL_CXX, CL_ObjCXX}; |
afd85c1a | 204 | unsigned int i, result; |
37fa72e9 NB |
205 | |
206 | /* This is conditionalized only because that is the way the front | |
207 | ends used to do it. Maybe this should be unconditional? */ | |
208 | if (c_dialect_cxx ()) | |
209 | { | |
210 | /* By default wrap lines at 80 characters. Is getenv | |
211 | ("COLUMNS") preferable? */ | |
212 | diagnostic_line_cutoff (global_dc) = 80; | |
213 | /* By default, emit location information once for every | |
214 | diagnostic message. */ | |
215 | diagnostic_prefixing_rule (global_dc) = DIAGNOSTICS_SHOW_PREFIX_ONCE; | |
216 | } | |
217 | ||
218 | parse_in = cpp_create_reader (c_dialect_cxx () ? CLK_GNUCXX: CLK_GNUC89, | |
50f59cd7 | 219 | ident_hash, &line_table); |
37fa72e9 | 220 | |
18bdccaa | 221 | cpp_opts = cpp_get_options (parse_in); |
b1822ccc | 222 | cpp_opts->dollars_in_ident = DOLLARS_IN_IDENTIFIERS; |
37fa72e9 | 223 | cpp_opts->objc = c_dialect_objc (); |
78b8811a HPN |
224 | |
225 | /* Reset to avoid warnings on internal definitions. We set it just | |
226 | before passing on command-line options to cpplib. */ | |
227 | cpp_opts->warn_dollars = 0; | |
228 | ||
37fa72e9 NB |
229 | flag_exceptions = c_dialect_cxx (); |
230 | warn_pointer_arith = c_dialect_cxx (); | |
d539b114 | 231 | warn_write_strings = c_dialect_cxx(); |
2772ef3e | 232 | |
5d038c4c | 233 | deferred_opts = XNEWVEC (struct deferred_opt, argc); |
b86f6cd9 | 234 | |
33de9573 NB |
235 | result = lang_flags[c_language]; |
236 | ||
afd85c1a | 237 | if (c_language == clk_c) |
33de9573 | 238 | { |
afd85c1a RS |
239 | /* If preprocessing assembly language, accept any of the C-family |
240 | front end options since the driver may pass them through. */ | |
241 | for (i = 1; i < argc; i++) | |
242 | if (! strcmp (argv[i], "-lang-asm")) | |
243 | { | |
244 | result |= CL_C | CL_ObjC | CL_CXX | CL_ObjCXX; | |
245 | break; | |
246 | } | |
a67ec6ab FXC |
247 | |
248 | #ifdef CL_Fortran | |
249 | for (i = 1; i < argc; i++) | |
250 | if (! strcmp (argv[i], "-lang-fortran")) | |
251 | { | |
252 | result |= CL_Fortran; | |
253 | break; | |
254 | } | |
255 | #endif | |
33de9573 | 256 | } |
33de9573 NB |
257 | |
258 | return result; | |
0b6f2917 NB |
259 | } |
260 | ||
b20d9f0c | 261 | /* Handle switch SCODE with argument ARG. VALUE is true, unless no- |
2772ef3e NB |
262 | form of an -f or -W option was given. Returns 0 if the switch was |
263 | invalid, a negative number to prevent language-independent | |
264 | processing in toplev.c (a hack necessary for the short-term). */ | |
0b6f2917 | 265 | int |
7b086b11 | 266 | c_common_handle_option (size_t scode, const char *arg, int value) |
0b6f2917 | 267 | { |
2772ef3e NB |
268 | const struct cl_option *option = &cl_options[scode]; |
269 | enum opt_code code = (enum opt_code) scode; | |
f18754d6 | 270 | int result = 1; |
2772ef3e | 271 | |
69723be2 SB |
272 | /* Prevent resetting the language standard to a C dialect when the driver |
273 | has already determined that we're looking at assembler input. */ | |
274 | bool preprocessing_asm_p = (cpp_get_options (parse_in)->lang == CLK_ASM); | |
275 | ||
fef3106c | 276 | switch (code) |
0b6f2917 | 277 | { |
2772ef3e | 278 | default: |
7619c085 DD |
279 | if (cl_options[code].flags & (CL_C | CL_CXX | CL_ObjC | CL_ObjCXX)) |
280 | break; | |
a67ec6ab FXC |
281 | #ifdef CL_Fortran |
282 | if (lang_fortran && (cl_options[code].flags & (CL_Fortran))) | |
283 | break; | |
284 | #endif | |
afd85c1a | 285 | result = 0; |
33de9573 | 286 | break; |
0b6f2917 | 287 | |
fef3106c | 288 | case OPT__output_pch_: |
17211ab5 GK |
289 | pch_file = arg; |
290 | break; | |
291 | ||
c1bad961 NB |
292 | case OPT_A: |
293 | defer_opt (code, arg); | |
294 | break; | |
295 | ||
4b7091eb NB |
296 | case OPT_C: |
297 | cpp_opts->discard_comments = 0; | |
298 | break; | |
299 | ||
300 | case OPT_CC: | |
301 | cpp_opts->discard_comments = 0; | |
302 | cpp_opts->discard_comments_in_macro_exp = 0; | |
303 | break; | |
304 | ||
c1bad961 NB |
305 | case OPT_D: |
306 | defer_opt (code, arg); | |
307 | break; | |
308 | ||
0b6f2917 NB |
309 | case OPT_E: |
310 | flag_preprocess_only = 1; | |
311 | break; | |
312 | ||
4b7091eb NB |
313 | case OPT_H: |
314 | cpp_opts->print_include_names = 1; | |
315 | break; | |
316 | ||
94d1613b MS |
317 | case OPT_F: |
318 | TARGET_OPTF (xstrdup (arg)); | |
319 | break; | |
320 | ||
5793b276 NB |
321 | case OPT_I: |
322 | if (strcmp (arg, "-")) | |
b02398bd | 323 | add_path (xstrdup (arg), BRACKET, 0, true); |
5793b276 NB |
324 | else |
325 | { | |
326 | if (quote_chain_split) | |
327 | error ("-I- specified twice"); | |
328 | quote_chain_split = true; | |
329 | split_quote_chain (); | |
4bed3787 | 330 | inform ("obsolete option -I- used, please use -iquote instead"); |
5793b276 NB |
331 | } |
332 | break; | |
333 | ||
f4ff5a69 NB |
334 | case OPT_M: |
335 | case OPT_MM: | |
336 | /* When doing dependencies with -M or -MM, suppress normal | |
337 | preprocessed output, but still do -dM etc. as software | |
338 | depends on this. Preprocessed output does occur if -MD, -MMD | |
339 | or environment var dependency generation is used. */ | |
340 | cpp_opts->deps.style = (code == OPT_M ? DEPS_SYSTEM: DEPS_USER); | |
63973df3 | 341 | flag_no_output = 1; |
f4ff5a69 NB |
342 | cpp_opts->inhibit_warnings = 1; |
343 | break; | |
344 | ||
345 | case OPT_MD: | |
346 | case OPT_MMD: | |
347 | cpp_opts->deps.style = (code == OPT_MD ? DEPS_SYSTEM: DEPS_USER); | |
348 | deps_file = arg; | |
349 | break; | |
350 | ||
351 | case OPT_MF: | |
352 | deps_seen = true; | |
353 | deps_file = arg; | |
354 | break; | |
355 | ||
356 | case OPT_MG: | |
357 | deps_seen = true; | |
358 | cpp_opts->deps.missing_files = true; | |
359 | break; | |
360 | ||
361 | case OPT_MP: | |
362 | deps_seen = true; | |
363 | cpp_opts->deps.phony_targets = true; | |
364 | break; | |
365 | ||
366 | case OPT_MQ: | |
367 | case OPT_MT: | |
368 | deps_seen = true; | |
369 | defer_opt (code, arg); | |
370 | break; | |
371 | ||
4b7091eb | 372 | case OPT_P: |
63973df3 | 373 | flag_no_line_commands = 1; |
4b7091eb NB |
374 | break; |
375 | ||
b20d9f0c AO |
376 | case OPT_fworking_directory: |
377 | flag_working_directory = value; | |
378 | break; | |
379 | ||
c1bad961 NB |
380 | case OPT_U: |
381 | defer_opt (code, arg); | |
382 | break; | |
383 | ||
0b6f2917 | 384 | case OPT_Wall: |
7b086b11 NB |
385 | set_Wunused (value); |
386 | set_Wformat (value); | |
387 | set_Wimplicit (value); | |
388 | warn_char_subscripts = value; | |
389 | warn_missing_braces = value; | |
390 | warn_parentheses = value; | |
391 | warn_return_type = value; | |
392 | warn_sequence_point = value; /* Was C only. */ | |
37fa72e9 | 393 | if (c_dialect_cxx ()) |
7b086b11 NB |
394 | warn_sign_compare = value; |
395 | warn_switch = value; | |
396 | warn_strict_aliasing = value; | |
e994a705 | 397 | warn_string_literal_comparison = value; |
690a704a | 398 | warn_always_true = value; |
2f6e4e97 | 399 | |
0b6f2917 | 400 | /* Only warn about unknown pragmas that are not in system |
2f6e4e97 | 401 | headers. */ |
7b086b11 | 402 | warn_unknown_pragmas = value; |
0b6f2917 NB |
403 | |
404 | /* We save the value of warn_uninitialized, since if they put | |
405 | -Wuninitialized on the command line, we need to generate a | |
406 | warning about not using it without also specifying -O. */ | |
407 | if (warn_uninitialized != 1) | |
7b086b11 | 408 | warn_uninitialized = (value ? 2 : 0); |
0b6f2917 | 409 | |
37fa72e9 | 410 | if (!c_dialect_cxx ()) |
0b6f2917 NB |
411 | /* We set this to 2 here, but 1 in -Wmain, so -ffreestanding |
412 | can turn it off only if it's not explicit. */ | |
7b086b11 | 413 | warn_main = value * 2; |
0b6f2917 NB |
414 | else |
415 | { | |
416 | /* C++-specific warnings. */ | |
7b086b11 NB |
417 | warn_reorder = value; |
418 | warn_nontemplate_friend = value; | |
7f420d0d GDR |
419 | if (value > 0) |
420 | warn_write_strings = true; | |
0b6f2917 | 421 | } |
18bdccaa | 422 | |
7b086b11 NB |
423 | cpp_opts->warn_trigraphs = value; |
424 | cpp_opts->warn_comments = value; | |
425 | cpp_opts->warn_num_sign_change = value; | |
426 | cpp_opts->warn_multichar = value; /* Was C++ only. */ | |
f4e9414e AO |
427 | |
428 | if (warn_pointer_sign == -1) | |
429 | warn_pointer_sign = 1; | |
0b6f2917 NB |
430 | break; |
431 | ||
18bdccaa NB |
432 | case OPT_Wcomment: |
433 | case OPT_Wcomments: | |
7b086b11 | 434 | cpp_opts->warn_comments = value; |
18bdccaa NB |
435 | break; |
436 | ||
0b6f2917 | 437 | case OPT_Wdeprecated: |
7b086b11 | 438 | cpp_opts->warn_deprecated = value; |
0b6f2917 NB |
439 | break; |
440 | ||
18bdccaa | 441 | case OPT_Wendif_labels: |
7b086b11 | 442 | cpp_opts->warn_endif_labels = value; |
18bdccaa NB |
443 | break; |
444 | ||
445 | case OPT_Werror: | |
7b086b11 | 446 | cpp_opts->warnings_are_errors = value; |
7783b402 | 447 | global_dc->warning_as_error_requested = value; |
18bdccaa NB |
448 | break; |
449 | ||
fef3106c | 450 | case OPT_Werror_implicit_function_declaration: |
c83857ff | 451 | mesg_implicit_function_declaration = 2; |
0b6f2917 NB |
452 | break; |
453 | ||
0b6f2917 | 454 | case OPT_Wformat: |
7b086b11 | 455 | set_Wformat (value); |
0b6f2917 NB |
456 | break; |
457 | ||
fef3106c | 458 | case OPT_Wformat_: |
0b6f2917 NB |
459 | set_Wformat (atoi (arg)); |
460 | break; | |
461 | ||
0b6f2917 | 462 | case OPT_Wimplicit: |
7b086b11 | 463 | set_Wimplicit (value); |
0b6f2917 NB |
464 | break; |
465 | ||
18bdccaa | 466 | case OPT_Wimport: |
bf42e45b | 467 | /* Silently ignore for now. */ |
18bdccaa NB |
468 | break; |
469 | ||
17211ab5 | 470 | case OPT_Winvalid_pch: |
7b086b11 | 471 | cpp_opts->warn_invalid_pch = value; |
17211ab5 GK |
472 | break; |
473 | ||
0b6f2917 | 474 | case OPT_Wmain: |
7b086b11 | 475 | if (value) |
0b6f2917 NB |
476 | warn_main = 1; |
477 | else | |
478 | warn_main = -1; | |
479 | break; | |
480 | ||
b02398bd BE |
481 | case OPT_Wmissing_include_dirs: |
482 | cpp_opts->warn_missing_include_dirs = value; | |
483 | break; | |
484 | ||
0b6f2917 | 485 | case OPT_Wmultichar: |
7b086b11 | 486 | cpp_opts->warn_multichar = value; |
0b6f2917 NB |
487 | break; |
488 | ||
50668cf6 GK |
489 | case OPT_Wnormalized_: |
490 | if (!value || (arg && strcasecmp (arg, "none") == 0)) | |
491 | cpp_opts->warn_normalize = normalized_none; | |
492 | else if (!arg || strcasecmp (arg, "nfkc") == 0) | |
493 | cpp_opts->warn_normalize = normalized_KC; | |
494 | else if (strcasecmp (arg, "id") == 0) | |
495 | cpp_opts->warn_normalize = normalized_identifier_C; | |
496 | else if (strcasecmp (arg, "nfc") == 0) | |
497 | cpp_opts->warn_normalize = normalized_C; | |
498 | else | |
499 | error ("argument %qs to %<-Wnormalized%> not recognized", arg); | |
500 | break; | |
501 | ||
0b6f2917 | 502 | case OPT_Wreturn_type: |
7b086b11 | 503 | warn_return_type = value; |
0b6f2917 NB |
504 | break; |
505 | ||
b2f97e4a MM |
506 | case OPT_Wstrict_null_sentinel: |
507 | warn_strict_null_sentinel = value; | |
508 | break; | |
509 | ||
18bdccaa | 510 | case OPT_Wsystem_headers: |
7b086b11 | 511 | cpp_opts->warn_system_headers = value; |
18bdccaa NB |
512 | break; |
513 | ||
0b6f2917 | 514 | case OPT_Wtraditional: |
7b086b11 | 515 | cpp_opts->warn_traditional = value; |
18bdccaa NB |
516 | break; |
517 | ||
518 | case OPT_Wtrigraphs: | |
7b086b11 | 519 | cpp_opts->warn_trigraphs = value; |
18bdccaa NB |
520 | break; |
521 | ||
522 | case OPT_Wundef: | |
7b086b11 | 523 | cpp_opts->warn_undef = value; |
0b6f2917 NB |
524 | break; |
525 | ||
526 | case OPT_Wunknown_pragmas: | |
527 | /* Set to greater than 1, so that even unknown pragmas in | |
2f6e4e97 | 528 | system headers will be warned about. */ |
7b086b11 | 529 | warn_unknown_pragmas = value * 2; |
0b6f2917 NB |
530 | break; |
531 | ||
18bdccaa | 532 | case OPT_Wunused_macros: |
7b086b11 | 533 | warn_unused_macros = value; |
18bdccaa NB |
534 | break; |
535 | ||
e5b79219 RH |
536 | case OPT_Wvariadic_macros: |
537 | warn_variadic_macros = value; | |
538 | break; | |
539 | ||
0b6f2917 | 540 | case OPT_Wwrite_strings: |
cfb10bd3 | 541 | warn_write_strings = value; |
0b6f2917 | 542 | break; |
2f6e4e97 | 543 | |
efee9ded GDR |
544 | case OPT_Weffc__: |
545 | warn_ecpp = value; | |
546 | if (value) | |
547 | warn_nonvdtor = true; | |
548 | break; | |
549 | ||
f749a36b | 550 | case OPT_ansi: |
37fa72e9 | 551 | if (!c_dialect_cxx ()) |
f749a36b NB |
552 | set_std_c89 (false, true); |
553 | else | |
554 | set_std_cxx98 (true); | |
555 | break; | |
0b6f2917 | 556 | |
4b7091eb NB |
557 | case OPT_d: |
558 | handle_OPT_d (arg); | |
559 | break; | |
560 | ||
0b6f2917 | 561 | case OPT_fcond_mismatch: |
37fa72e9 | 562 | if (!c_dialect_cxx ()) |
0b6f2917 | 563 | { |
7b086b11 | 564 | flag_cond_mismatch = value; |
0b6f2917 NB |
565 | break; |
566 | } | |
567 | /* Fall through. */ | |
568 | ||
569 | case OPT_fall_virtual: | |
7813d14c | 570 | case OPT_falt_external_templates: |
0b6f2917 | 571 | case OPT_fenum_int_equiv: |
7813d14c | 572 | case OPT_fexternal_templates: |
0b6f2917 NB |
573 | case OPT_fguiding_decls: |
574 | case OPT_fhonor_std: | |
575 | case OPT_fhuge_objects: | |
576 | case OPT_flabels_ok: | |
fef3106c | 577 | case OPT_fname_mangling_version_: |
0b6f2917 NB |
578 | case OPT_fnew_abi: |
579 | case OPT_fnonnull_objects: | |
580 | case OPT_fsquangle: | |
581 | case OPT_fstrict_prototype: | |
582 | case OPT_fthis_is_variable: | |
583 | case OPT_fvtable_thunks: | |
584 | case OPT_fxref: | |
a0c8285b | 585 | case OPT_fvtable_gc: |
d4ee4d25 | 586 | warning (0, "switch %qs is no longer supported", option->opt_text); |
0b6f2917 NB |
587 | break; |
588 | ||
589 | case OPT_faccess_control: | |
7b086b11 | 590 | flag_access_control = value; |
0b6f2917 NB |
591 | break; |
592 | ||
0b6f2917 | 593 | case OPT_fasm: |
7b086b11 | 594 | flag_no_asm = !value; |
0b6f2917 NB |
595 | break; |
596 | ||
597 | case OPT_fbuiltin: | |
7b086b11 | 598 | flag_no_builtin = !value; |
0b6f2917 NB |
599 | break; |
600 | ||
601 | case OPT_fbuiltin_: | |
7b086b11 | 602 | if (value) |
4b7091eb NB |
603 | result = 0; |
604 | else | |
605 | disable_builtin_function (arg); | |
0b6f2917 NB |
606 | break; |
607 | ||
608 | case OPT_fdollars_in_identifiers: | |
7b086b11 | 609 | cpp_opts->dollars_in_ident = value; |
0b6f2917 NB |
610 | break; |
611 | ||
0b6f2917 | 612 | case OPT_ffreestanding: |
7b086b11 | 613 | value = !value; |
938d968e | 614 | /* Fall through.... */ |
0b6f2917 | 615 | case OPT_fhosted: |
7b086b11 NB |
616 | flag_hosted = value; |
617 | flag_no_builtin = !value; | |
0b6f2917 | 618 | /* warn_main will be 2 if set by -Wall, 1 if set by -Wmain */ |
7b086b11 | 619 | if (!value && warn_main == 2) |
0b6f2917 NB |
620 | warn_main = 0; |
621 | break; | |
622 | ||
623 | case OPT_fshort_double: | |
7b086b11 | 624 | flag_short_double = value; |
0b6f2917 NB |
625 | break; |
626 | ||
627 | case OPT_fshort_enums: | |
7b086b11 | 628 | flag_short_enums = value; |
0b6f2917 NB |
629 | break; |
630 | ||
631 | case OPT_fshort_wchar: | |
7b086b11 | 632 | flag_short_wchar = value; |
0b6f2917 NB |
633 | break; |
634 | ||
635 | case OPT_fsigned_bitfields: | |
7b086b11 | 636 | flag_signed_bitfields = value; |
0b6f2917 NB |
637 | break; |
638 | ||
639 | case OPT_fsigned_char: | |
7b086b11 | 640 | flag_signed_char = value; |
0b6f2917 NB |
641 | break; |
642 | ||
643 | case OPT_funsigned_bitfields: | |
7b086b11 | 644 | flag_signed_bitfields = !value; |
0b6f2917 NB |
645 | break; |
646 | ||
647 | case OPT_funsigned_char: | |
7b086b11 | 648 | flag_signed_char = !value; |
0b6f2917 NB |
649 | break; |
650 | ||
651 | case OPT_fcheck_new: | |
7b086b11 | 652 | flag_check_new = value; |
0b6f2917 NB |
653 | break; |
654 | ||
655 | case OPT_fconserve_space: | |
7b086b11 | 656 | flag_conserve_space = value; |
0b6f2917 NB |
657 | break; |
658 | ||
fef3106c | 659 | case OPT_fconstant_string_class_: |
4b7091eb | 660 | constant_string_class_name = arg; |
0b6f2917 NB |
661 | break; |
662 | ||
663 | case OPT_fdefault_inline: | |
7b086b11 | 664 | flag_default_inline = value; |
0b6f2917 NB |
665 | break; |
666 | ||
667 | case OPT_felide_constructors: | |
7b086b11 | 668 | flag_elide_constructors = value; |
0b6f2917 NB |
669 | break; |
670 | ||
671 | case OPT_fenforce_eh_specs: | |
7b086b11 | 672 | flag_enforce_eh_specs = value; |
0b6f2917 NB |
673 | break; |
674 | ||
af15a2fe JM |
675 | case OPT_fextended_identifiers: |
676 | cpp_opts->extended_identifiers = value; | |
677 | break; | |
678 | ||
0b6f2917 | 679 | case OPT_ffor_scope: |
7b086b11 | 680 | flag_new_for_scope = value; |
0b6f2917 NB |
681 | break; |
682 | ||
683 | case OPT_fgnu_keywords: | |
7b086b11 | 684 | flag_no_gnu_keywords = !value; |
0b6f2917 NB |
685 | break; |
686 | ||
687 | case OPT_fgnu_runtime: | |
7b086b11 | 688 | flag_next_runtime = !value; |
0b6f2917 NB |
689 | break; |
690 | ||
691 | case OPT_fhandle_exceptions: | |
d4ee4d25 | 692 | warning (0, "-fhandle-exceptions has been renamed -fexceptions (and is now on by default)"); |
7b086b11 | 693 | flag_exceptions = value; |
0b6f2917 NB |
694 | break; |
695 | ||
696 | case OPT_fimplement_inlines: | |
7b086b11 | 697 | flag_implement_inlines = value; |
0b6f2917 NB |
698 | break; |
699 | ||
700 | case OPT_fimplicit_inline_templates: | |
7b086b11 | 701 | flag_implicit_inline_templates = value; |
0b6f2917 NB |
702 | break; |
703 | ||
704 | case OPT_fimplicit_templates: | |
7b086b11 | 705 | flag_implicit_templates = value; |
0b6f2917 NB |
706 | break; |
707 | ||
00c8e9f6 MS |
708 | case OPT_flax_vector_conversions: |
709 | flag_lax_vector_conversions = value; | |
710 | break; | |
711 | ||
0b6f2917 | 712 | case OPT_fms_extensions: |
7b086b11 | 713 | flag_ms_extensions = value; |
0b6f2917 NB |
714 | break; |
715 | ||
716 | case OPT_fnext_runtime: | |
7b086b11 | 717 | flag_next_runtime = value; |
0b6f2917 NB |
718 | break; |
719 | ||
264fa2db ZL |
720 | case OPT_fnil_receivers: |
721 | flag_nil_receivers = value; | |
722 | break; | |
723 | ||
0b6f2917 | 724 | case OPT_fnonansi_builtins: |
7b086b11 | 725 | flag_no_nonansi_builtin = !value; |
0b6f2917 NB |
726 | break; |
727 | ||
18bdccaa | 728 | case OPT_foperator_names: |
7b086b11 | 729 | cpp_opts->operator_names = value; |
18bdccaa NB |
730 | break; |
731 | ||
0b6f2917 | 732 | case OPT_foptional_diags: |
7b086b11 | 733 | flag_optional_diags = value; |
0b6f2917 NB |
734 | break; |
735 | ||
17211ab5 | 736 | case OPT_fpch_deps: |
7b086b11 | 737 | cpp_opts->restore_pch_deps = value; |
17211ab5 GK |
738 | break; |
739 | ||
c0d578e6 GK |
740 | case OPT_fpch_preprocess: |
741 | flag_pch_preprocess = value; | |
742 | break; | |
743 | ||
0b6f2917 | 744 | case OPT_fpermissive: |
7b086b11 | 745 | flag_permissive = value; |
0b6f2917 NB |
746 | break; |
747 | ||
18bdccaa | 748 | case OPT_fpreprocessed: |
7b086b11 | 749 | cpp_opts->preprocessed = value; |
18bdccaa NB |
750 | break; |
751 | ||
264fa2db ZL |
752 | case OPT_freplace_objc_classes: |
753 | flag_replace_objc_classes = value; | |
754 | break; | |
c22cacf3 | 755 | |
0b6f2917 | 756 | case OPT_frepo: |
7b086b11 NB |
757 | flag_use_repository = value; |
758 | if (value) | |
0b6f2917 NB |
759 | flag_implicit_templates = 0; |
760 | break; | |
761 | ||
762 | case OPT_frtti: | |
7b086b11 | 763 | flag_rtti = value; |
0b6f2917 NB |
764 | break; |
765 | ||
18bdccaa | 766 | case OPT_fshow_column: |
7b086b11 | 767 | cpp_opts->show_column = value; |
18bdccaa NB |
768 | break; |
769 | ||
0b6f2917 | 770 | case OPT_fstats: |
7b086b11 | 771 | flag_detailed_statistics = value; |
0b6f2917 NB |
772 | break; |
773 | ||
fef3106c | 774 | case OPT_ftabstop_: |
18bdccaa | 775 | /* It is documented that we silently ignore silly values. */ |
7b086b11 NB |
776 | if (value >= 1 && value <= 100) |
777 | cpp_opts->tabstop = value; | |
18bdccaa NB |
778 | break; |
779 | ||
e6cc3a24 ZW |
780 | case OPT_fexec_charset_: |
781 | cpp_opts->narrow_charset = arg; | |
782 | break; | |
783 | ||
784 | case OPT_fwide_exec_charset_: | |
785 | cpp_opts->wide_charset = arg; | |
786 | break; | |
787 | ||
16dd5cfe EC |
788 | case OPT_finput_charset_: |
789 | cpp_opts->input_charset = arg; | |
790 | break; | |
791 | ||
fef3106c | 792 | case OPT_ftemplate_depth_: |
7b086b11 | 793 | max_tinst_depth = value; |
0b6f2917 NB |
794 | break; |
795 | ||
0b6f2917 | 796 | case OPT_fuse_cxa_atexit: |
7b086b11 | 797 | flag_use_cxa_atexit = value; |
0b6f2917 | 798 | break; |
966541e3 | 799 | |
c7b5e395 GK |
800 | case OPT_fuse_cxa_get_exception_ptr: |
801 | flag_use_cxa_get_exception_ptr = value; | |
802 | break; | |
c22cacf3 | 803 | |
d7afec4b ND |
804 | case OPT_fvisibility_inlines_hidden: |
805 | visibility_options.inlines_hidden = value; | |
806 | break; | |
0b6f2917 NB |
807 | |
808 | case OPT_fweak: | |
7b086b11 | 809 | flag_weak = value; |
0b6f2917 | 810 | break; |
264fa2db | 811 | |
40aac948 JM |
812 | case OPT_fthreadsafe_statics: |
813 | flag_threadsafe_statics = value; | |
814 | break; | |
815 | ||
264fa2db ZL |
816 | case OPT_fzero_link: |
817 | flag_zero_link = value; | |
818 | break; | |
0b6f2917 NB |
819 | |
820 | case OPT_gen_decls: | |
821 | flag_gen_declaration = 1; | |
822 | break; | |
823 | ||
5793b276 | 824 | case OPT_idirafter: |
b02398bd | 825 | add_path (xstrdup (arg), AFTER, 0, true); |
5793b276 NB |
826 | break; |
827 | ||
255c10b1 | 828 | case OPT_imacros: |
23345bbb NB |
829 | case OPT_include: |
830 | defer_opt (code, arg); | |
831 | break; | |
832 | ||
2b6dd222 JM |
833 | case OPT_imultilib: |
834 | imultilib = arg; | |
835 | break; | |
836 | ||
5793b276 NB |
837 | case OPT_iprefix: |
838 | iprefix = arg; | |
839 | break; | |
840 | ||
4bed3787 | 841 | case OPT_iquote: |
b02398bd | 842 | add_path (xstrdup (arg), QUOTE, 0, true); |
4bed3787 MS |
843 | break; |
844 | ||
5793b276 NB |
845 | case OPT_isysroot: |
846 | sysroot = arg; | |
847 | break; | |
848 | ||
849 | case OPT_isystem: | |
b02398bd | 850 | add_path (xstrdup (arg), SYSTEM, 0, true); |
5793b276 NB |
851 | break; |
852 | ||
853 | case OPT_iwithprefix: | |
854 | add_prefixed_path (arg, SYSTEM); | |
855 | break; | |
856 | ||
857 | case OPT_iwithprefixbefore: | |
858 | add_prefixed_path (arg, BRACKET); | |
859 | break; | |
860 | ||
f749a36b NB |
861 | case OPT_lang_asm: |
862 | cpp_set_lang (parse_in, CLK_ASM); | |
42ad6c9e | 863 | cpp_opts->dollars_in_ident = false; |
f749a36b NB |
864 | break; |
865 | ||
a67ec6ab FXC |
866 | case OPT_lang_fortran: |
867 | lang_fortran = true; | |
868 | break; | |
869 | ||
f749a36b NB |
870 | case OPT_lang_objc: |
871 | cpp_opts->objc = 1; | |
872 | break; | |
873 | ||
4b7091eb | 874 | case OPT_nostdinc: |
5793b276 | 875 | std_inc = false; |
4b7091eb NB |
876 | break; |
877 | ||
fef3106c | 878 | case OPT_nostdinc__: |
5793b276 | 879 | std_cxx_inc = false; |
4b7091eb NB |
880 | break; |
881 | ||
b4a93904 | 882 | case OPT_o: |
76c3e73e NB |
883 | if (!out_fname) |
884 | out_fname = arg; | |
b4a93904 | 885 | else |
f75d3e11 | 886 | error ("output filename specified twice"); |
b4a93904 NB |
887 | break; |
888 | ||
18bdccaa NB |
889 | /* We need to handle the -pedantic switches here, rather than in |
890 | c_common_post_options, so that a subsequent -Wno-endif-labels | |
891 | is not overridden. */ | |
892 | case OPT_pedantic_errors: | |
893 | cpp_opts->pedantic_errors = 1; | |
938d968e | 894 | /* Fall through. */ |
18bdccaa NB |
895 | case OPT_pedantic: |
896 | cpp_opts->pedantic = 1; | |
897 | cpp_opts->warn_endif_labels = 1; | |
f4e9414e AO |
898 | if (warn_pointer_sign == -1) |
899 | warn_pointer_sign = 1; | |
89a42ac8 ZW |
900 | if (warn_overlength_strings == -1) |
901 | warn_overlength_strings = 1; | |
18bdccaa NB |
902 | break; |
903 | ||
0b6f2917 NB |
904 | case OPT_print_objc_runtime_info: |
905 | print_struct_values = 1; | |
906 | break; | |
907 | ||
3fd30b88 GK |
908 | case OPT_print_pch_checksum: |
909 | c_common_print_pch_checksum (stdout); | |
910 | exit_after_options = true; | |
911 | break; | |
912 | ||
b4a93904 NB |
913 | case OPT_remap: |
914 | cpp_opts->remap = 1; | |
0b6f2917 NB |
915 | break; |
916 | ||
fef3106c NB |
917 | case OPT_std_c__98: |
918 | case OPT_std_gnu__98: | |
69723be2 SB |
919 | if (!preprocessing_asm_p) |
920 | set_std_cxx98 (code == OPT_std_c__98 /* ISO */); | |
0b6f2917 NB |
921 | break; |
922 | ||
966541e3 DG |
923 | case OPT_std_c__0x: |
924 | case OPT_std_gnu__0x: | |
925 | if (!preprocessing_asm_p) | |
926 | set_std_cxx0x (code == OPT_std_c__0x /* ISO */); | |
927 | break; | |
928 | ||
0b6f2917 NB |
929 | case OPT_std_c89: |
930 | case OPT_std_iso9899_1990: | |
b4a93904 | 931 | case OPT_std_iso9899_199409: |
69723be2 SB |
932 | if (!preprocessing_asm_p) |
933 | set_std_c89 (code == OPT_std_iso9899_199409 /* c94 */, true /* ISO */); | |
f749a36b NB |
934 | break; |
935 | ||
936 | case OPT_std_gnu89: | |
69723be2 SB |
937 | if (!preprocessing_asm_p) |
938 | set_std_c89 (false /* c94 */, false /* ISO */); | |
0b6f2917 NB |
939 | break; |
940 | ||
941 | case OPT_std_c99: | |
942 | case OPT_std_c9x: | |
943 | case OPT_std_iso9899_1999: | |
944 | case OPT_std_iso9899_199x: | |
69723be2 SB |
945 | if (!preprocessing_asm_p) |
946 | set_std_c99 (true /* ISO */); | |
0b6f2917 NB |
947 | break; |
948 | ||
0b6f2917 NB |
949 | case OPT_std_gnu99: |
950 | case OPT_std_gnu9x: | |
69723be2 SB |
951 | if (!preprocessing_asm_p) |
952 | set_std_c99 (false /* ISO */); | |
0b6f2917 NB |
953 | break; |
954 | ||
4b7091eb NB |
955 | case OPT_trigraphs: |
956 | cpp_opts->trigraphs = 1; | |
957 | break; | |
958 | ||
959 | case OPT_traditional_cpp: | |
960 | cpp_opts->traditional = 1; | |
961 | break; | |
962 | ||
0b6f2917 NB |
963 | case OPT_undef: |
964 | flag_undef = 1; | |
965 | break; | |
0b6f2917 | 966 | |
4b7091eb NB |
967 | case OPT_w: |
968 | cpp_opts->inhibit_warnings = 1; | |
969 | break; | |
970 | ||
971 | case OPT_v: | |
5793b276 | 972 | verbose = true; |
4b7091eb NB |
973 | break; |
974 | } | |
0b6f2917 | 975 | |
0b6f2917 NB |
976 | return result; |
977 | } | |
978 | ||
979 | /* Post-switch processing. */ | |
980 | bool | |
8e9ea4d7 | 981 | c_common_post_options (const char **pfilename) |
0b6f2917 | 982 | { |
8e9ea4d7 PB |
983 | struct cpp_callbacks *cb; |
984 | ||
460bd0e3 | 985 | /* Canonicalize the input and output filenames. */ |
d1bd0ded GK |
986 | if (in_fnames == NULL) |
987 | { | |
5d038c4c | 988 | in_fnames = XNEWVEC (const char *, 1); |
d1bd0ded GK |
989 | in_fnames[0] = ""; |
990 | } | |
991 | else if (strcmp (in_fnames[0], "-") == 0) | |
992 | in_fnames[0] = ""; | |
460bd0e3 | 993 | |
76c3e73e NB |
994 | if (out_fname == NULL || !strcmp (out_fname, "-")) |
995 | out_fname = ""; | |
996 | ||
cd79e210 | 997 | if (cpp_opts->deps.style == DEPS_NONE) |
76c3e73e NB |
998 | check_deps_environment_vars (); |
999 | ||
f4ff5a69 | 1000 | handle_deferred_opts (); |
76c3e73e | 1001 | |
f4ff5a69 | 1002 | sanitize_cpp_opts (); |
460bd0e3 | 1003 | |
2b6dd222 | 1004 | register_include_chains (parse_in, sysroot, iprefix, imultilib, |
37fa72e9 | 1005 | std_inc, std_cxx_inc && c_dialect_cxx (), verbose); |
5793b276 | 1006 | |
c7b5e395 GK |
1007 | #ifdef C_COMMON_OVERRIDE_OPTIONS |
1008 | /* Some machines may reject certain combinations of C | |
1009 | language-specific options. */ | |
1010 | C_COMMON_OVERRIDE_OPTIONS; | |
1011 | #endif | |
1012 | ||
0b6f2917 NB |
1013 | flag_inline_trees = 1; |
1014 | ||
6de9cd9a DN |
1015 | /* Use tree inlining. */ |
1016 | if (!flag_no_inline) | |
1017 | flag_no_inline = 1; | |
1018 | if (flag_inline_functions) | |
39afeb1a | 1019 | flag_inline_trees = 2; |
0b6f2917 | 1020 | |
9affb2c7 ZW |
1021 | /* If we are given more than one input file, we must use |
1022 | unit-at-a-time mode. */ | |
1023 | if (num_in_fnames > 1) | |
1024 | flag_unit_at_a_time = 1; | |
1025 | ||
093c7153 RH |
1026 | /* Default to ObjC sjlj exception handling if NeXT runtime. */ |
1027 | if (flag_objc_sjlj_exceptions < 0) | |
1028 | flag_objc_sjlj_exceptions = flag_next_runtime; | |
1029 | if (flag_objc_exceptions && !flag_objc_sjlj_exceptions) | |
1030 | flag_exceptions = 1; | |
1031 | ||
2b001724 | 1032 | /* -Wextra implies -Wclobbered, -Wempty-body, -Wsign-compare, |
b1ed4cb4 MLI |
1033 | -Wmissing-field-initializers, -Wmissing-parameter-type |
1034 | -Wold-style-declaration, and -Woverride-init, | |
b3b433c5 | 1035 | but not if explicitly overridden. */ |
2b001724 MLI |
1036 | if (warn_clobbered == -1) |
1037 | warn_clobbered = extra_warnings; | |
b3b433c5 MLI |
1038 | if (warn_empty_body == -1) |
1039 | warn_empty_body = extra_warnings; | |
87f85ea0 ZW |
1040 | if (warn_sign_compare == -1) |
1041 | warn_sign_compare = extra_warnings; | |
eaac4679 RS |
1042 | if (warn_missing_field_initializers == -1) |
1043 | warn_missing_field_initializers = extra_warnings; | |
cb4af25a MLI |
1044 | if (warn_missing_parameter_type == -1) |
1045 | warn_missing_parameter_type = extra_warnings; | |
b1ed4cb4 MLI |
1046 | if (warn_old_style_declaration == -1) |
1047 | warn_old_style_declaration = extra_warnings; | |
7ed322d7 JM |
1048 | if (warn_override_init == -1) |
1049 | warn_override_init = extra_warnings; | |
87f85ea0 | 1050 | |
f4e9414e AO |
1051 | /* -Wpointer_sign is disabled by default, but it is enabled if any |
1052 | of -Wall or -pedantic are given. */ | |
1053 | if (warn_pointer_sign == -1) | |
1054 | warn_pointer_sign = 0; | |
1055 | ||
89a42ac8 ZW |
1056 | /* -Woverlength-strings is off by default, but is enabled by -pedantic. |
1057 | It is never enabled in C++, as the minimum limit is not normative | |
1058 | in that standard. */ | |
1059 | if (warn_overlength_strings == -1 || c_dialect_cxx ()) | |
1060 | warn_overlength_strings = 0; | |
1061 | ||
0b6f2917 NB |
1062 | /* Special format checking options don't work without -Wformat; warn if |
1063 | they are used. */ | |
44c21c7f DD |
1064 | if (!warn_format) |
1065 | { | |
1066 | warning (OPT_Wformat_y2k, | |
1067 | "-Wformat-y2k ignored without -Wformat"); | |
1068 | warning (OPT_Wformat_extra_args, | |
1069 | "-Wformat-extra-args ignored without -Wformat"); | |
1070 | warning (OPT_Wformat_zero_length, | |
1071 | "-Wformat-zero-length ignored without -Wformat"); | |
1072 | warning (OPT_Wformat_nonliteral, | |
1073 | "-Wformat-nonliteral ignored without -Wformat"); | |
1074 | warning (OPT_Wformat_security, | |
1075 | "-Wformat-security ignored without -Wformat"); | |
44c21c7f | 1076 | } |
0b6f2917 | 1077 | |
c7463669 RH |
1078 | /* C99 requires special handling of complex multiplication and division; |
1079 | -ffast-math and -fcx-limited-range are handled in process_options. */ | |
1080 | if (flag_isoc99) | |
1081 | flag_complex_method = 2; | |
1082 | ||
460bd0e3 NB |
1083 | if (flag_preprocess_only) |
1084 | { | |
63973df3 NB |
1085 | /* Open the output now. We must do so even if flag_no_output is |
1086 | on, because there may be other output than from the actual | |
1087 | preprocessing (e.g. from -dM). */ | |
1088 | if (out_fname[0] == '\0') | |
1089 | out_stream = stdout; | |
1090 | else | |
1091 | out_stream = fopen (out_fname, "w"); | |
1092 | ||
1093 | if (out_stream == NULL) | |
9d10c9a9 | 1094 | { |
fa6ef813 | 1095 | fatal_error ("opening output file %s: %m", out_fname); |
c366ade5 | 1096 | return false; |
9d10c9a9 | 1097 | } |
63973df3 | 1098 | |
d1bd0ded GK |
1099 | if (num_in_fnames > 1) |
1100 | error ("too many filenames given. Type %s --help for usage", | |
1101 | progname); | |
1102 | ||
9d10c9a9 | 1103 | init_pp_output (out_stream); |
460bd0e3 | 1104 | } |
9d10c9a9 NB |
1105 | else |
1106 | { | |
1107 | init_c_lex (); | |
460bd0e3 | 1108 | |
9d10c9a9 | 1109 | /* Yuk. WTF is this? I do know ObjC relies on it somewhere. */ |
3c20847b | 1110 | input_location = UNKNOWN_LOCATION; |
9d10c9a9 | 1111 | } |
63973df3 | 1112 | |
8e9ea4d7 PB |
1113 | cb = cpp_get_callbacks (parse_in); |
1114 | cb->file_change = cb_file_change; | |
1115 | cb->dir_change = cb_dir_change; | |
4169c321 | 1116 | cpp_post_options (parse_in); |
23345bbb | 1117 | |
3c20847b | 1118 | input_location = UNKNOWN_LOCATION; |
4bfec483 NB |
1119 | |
1120 | /* If an error has occurred in cpplib, note it so we fail | |
1121 | immediately. */ | |
1122 | errorcount += cpp_errors (parse_in); | |
1123 | ||
8e9ea4d7 PB |
1124 | *pfilename = this_input_filename |
1125 | = cpp_read_main_file (parse_in, in_fnames[0]); | |
540554f4 | 1126 | /* Don't do any compilation or preprocessing if there is no input file. */ |
8e9ea4d7 | 1127 | if (this_input_filename == NULL) |
540554f4 JW |
1128 | { |
1129 | errorcount++; | |
1130 | return false; | |
1131 | } | |
8e9ea4d7 | 1132 | |
8a4baa83 | 1133 | if (flag_working_directory |
3f75a254 | 1134 | && flag_preprocess_only && !flag_no_line_commands) |
8e9ea4d7 PB |
1135 | pp_dir_change (parse_in, get_src_pwd ()); |
1136 | ||
4bfec483 NB |
1137 | return flag_preprocess_only; |
1138 | } | |
1139 | ||
1140 | /* Front end initialization common to C, ObjC and C++. */ | |
1141 | bool | |
2f6e4e97 | 1142 | c_common_init (void) |
4bfec483 | 1143 | { |
4bfec483 NB |
1144 | /* Set up preprocessor arithmetic. Must be done after call to |
1145 | c_common_nodes_and_builtins for type nodes to be good. */ | |
1146 | cpp_opts->precision = TYPE_PRECISION (intmax_type_node); | |
1147 | cpp_opts->char_precision = TYPE_PRECISION (char_type_node); | |
1148 | cpp_opts->int_precision = TYPE_PRECISION (integer_type_node); | |
1149 | cpp_opts->wchar_precision = TYPE_PRECISION (wchar_type_node); | |
8df83eae | 1150 | cpp_opts->unsigned_wchar = TYPE_UNSIGNED (wchar_type_node); |
e6cc3a24 ZW |
1151 | cpp_opts->bytes_big_endian = BYTES_BIG_ENDIAN; |
1152 | ||
1153 | /* This can't happen until after wchar_precision and bytes_big_endian | |
1154 | are known. */ | |
1155 | cpp_init_iconv (parse_in); | |
460bd0e3 | 1156 | |
3fd30b88 GK |
1157 | if (version_flag) |
1158 | c_common_print_pch_checksum (stderr); | |
1159 | ||
9d10c9a9 NB |
1160 | if (flag_preprocess_only) |
1161 | { | |
8e9ea4d7 PB |
1162 | finish_options (); |
1163 | preprocess_file (parse_in); | |
4bfec483 | 1164 | return false; |
9d10c9a9 NB |
1165 | } |
1166 | ||
63973df3 | 1167 | /* Has to wait until now so that cpplib has its hash table. */ |
460bd0e3 NB |
1168 | init_pragma (); |
1169 | ||
4bfec483 | 1170 | return true; |
76c3e73e NB |
1171 | } |
1172 | ||
d1bd0ded GK |
1173 | /* Initialize the integrated preprocessor after debug output has been |
1174 | initialized; loop over each input file. */ | |
23345bbb | 1175 | void |
f75fbaf7 | 1176 | c_common_parse_file (int set_yydebug) |
23345bbb | 1177 | { |
9affb2c7 ZW |
1178 | unsigned int i; |
1179 | ||
f75fbaf7 | 1180 | if (set_yydebug) |
566c6181 ZW |
1181 | switch (c_language) |
1182 | { | |
1183 | case clk_c: | |
1184 | warning(0, "The C parser does not support -dy, option ignored"); | |
1185 | break; | |
1186 | case clk_objc: | |
1187 | warning(0, | |
1188 | "The Objective-C parser does not support -dy, option ignored"); | |
1189 | break; | |
1190 | case clk_cxx: | |
1191 | warning(0, "The C++ parser does not support -dy, option ignored"); | |
1192 | break; | |
1193 | case clk_objcxx: | |
1194 | warning(0, | |
1195 | "The Objective-C++ parser does not support -dy, option ignored"); | |
1196 | break; | |
1197 | default: | |
1198 | gcc_unreachable (); | |
1199 | } | |
23345bbb | 1200 | |
9affb2c7 ZW |
1201 | i = 0; |
1202 | for (;;) | |
1203 | { | |
9e9945c5 DB |
1204 | /* Start the main input file, if the debug writer wants it. */ |
1205 | if (debug_hooks->start_end_main_source_file) | |
1206 | (*debug_hooks->start_source_file) (0, this_input_filename); | |
9affb2c7 ZW |
1207 | finish_options (); |
1208 | pch_init (); | |
1209 | push_file_scope (); | |
1210 | c_parse_file (); | |
1211 | finish_file (); | |
1212 | pop_file_scope (); | |
9e9945c5 DB |
1213 | /* And end the main input file, if the debug writer wants it */ |
1214 | if (debug_hooks->start_end_main_source_file) | |
1215 | (*debug_hooks->end_source_file) (0); | |
9affb2c7 ZW |
1216 | if (++i >= num_in_fnames) |
1217 | break; | |
1218 | cpp_undef_all (parse_in); | |
1219 | this_input_filename | |
1220 | = cpp_read_main_file (parse_in, in_fnames[i]); | |
1221 | /* If an input file is missing, abandon further compilation. | |
c22cacf3 | 1222 | cpplib has issued a diagnostic. */ |
9affb2c7 ZW |
1223 | if (!this_input_filename) |
1224 | break; | |
1225 | } | |
23345bbb NB |
1226 | } |
1227 | ||
76c3e73e NB |
1228 | /* Common finish hook for the C, ObjC and C++ front ends. */ |
1229 | void | |
2f6e4e97 | 1230 | c_common_finish (void) |
76c3e73e NB |
1231 | { |
1232 | FILE *deps_stream = NULL; | |
1233 | ||
f4ff5a69 | 1234 | if (cpp_opts->deps.style != DEPS_NONE) |
76c3e73e NB |
1235 | { |
1236 | /* If -M or -MM was seen without -MF, default output to the | |
1237 | output stream. */ | |
f4ff5a69 | 1238 | if (!deps_file) |
76c3e73e NB |
1239 | deps_stream = out_stream; |
1240 | else | |
1241 | { | |
f4ff5a69 | 1242 | deps_stream = fopen (deps_file, deps_append ? "a": "w"); |
76c3e73e | 1243 | if (!deps_stream) |
fa6ef813 | 1244 | fatal_error ("opening dependency file %s: %m", deps_file); |
76c3e73e NB |
1245 | } |
1246 | } | |
1247 | ||
1248 | /* For performance, avoid tearing down cpplib's internal structures | |
1249 | with cpp_destroy (). */ | |
1250 | errorcount += cpp_finish (parse_in, deps_stream); | |
1251 | ||
1252 | if (deps_stream && deps_stream != out_stream | |
1253 | && (ferror (deps_stream) || fclose (deps_stream))) | |
fa6ef813 | 1254 | fatal_error ("closing dependency file %s: %m", deps_file); |
76c3e73e NB |
1255 | |
1256 | if (out_stream && (ferror (out_stream) || fclose (out_stream))) | |
fa6ef813 | 1257 | fatal_error ("when writing output to %s: %m", out_fname); |
76c3e73e NB |
1258 | } |
1259 | ||
76c3e73e NB |
1260 | /* Either of two environment variables can specify output of |
1261 | dependencies. Their value is either "OUTPUT_FILE" or "OUTPUT_FILE | |
1262 | DEPS_TARGET", where OUTPUT_FILE is the file to write deps info to | |
1263 | and DEPS_TARGET is the target to mention in the deps. They also | |
1264 | result in dependency information being appended to the output file | |
182d89a3 NB |
1265 | rather than overwriting it, and like Sun's compiler |
1266 | SUNPRO_DEPENDENCIES suppresses the dependency on the main file. */ | |
76c3e73e | 1267 | static void |
2f6e4e97 | 1268 | check_deps_environment_vars (void) |
76c3e73e NB |
1269 | { |
1270 | char *spec; | |
1271 | ||
1272 | GET_ENVIRONMENT (spec, "DEPENDENCIES_OUTPUT"); | |
1273 | if (spec) | |
f4ff5a69 | 1274 | cpp_opts->deps.style = DEPS_USER; |
76c3e73e NB |
1275 | else |
1276 | { | |
1277 | GET_ENVIRONMENT (spec, "SUNPRO_DEPENDENCIES"); | |
1278 | if (spec) | |
182d89a3 NB |
1279 | { |
1280 | cpp_opts->deps.style = DEPS_SYSTEM; | |
1281 | cpp_opts->deps.ignore_main_file = true; | |
1282 | } | |
76c3e73e NB |
1283 | } |
1284 | ||
1285 | if (spec) | |
1286 | { | |
1287 | /* Find the space before the DEPS_TARGET, if there is one. */ | |
1288 | char *s = strchr (spec, ' '); | |
1289 | if (s) | |
1290 | { | |
1291 | /* Let the caller perform MAKE quoting. */ | |
f4ff5a69 | 1292 | defer_opt (OPT_MT, s + 1); |
76c3e73e NB |
1293 | *s = '\0'; |
1294 | } | |
1295 | ||
1296 | /* Command line -MF overrides environment variables and default. */ | |
f4ff5a69 NB |
1297 | if (!deps_file) |
1298 | deps_file = spec; | |
76c3e73e | 1299 | |
f4ff5a69 | 1300 | deps_append = 1; |
1b3c8f46 | 1301 | deps_seen = true; |
f4ff5a69 NB |
1302 | } |
1303 | } | |
1304 | ||
1305 | /* Handle deferred command line switches. */ | |
1306 | static void | |
2f6e4e97 | 1307 | handle_deferred_opts (void) |
f4ff5a69 NB |
1308 | { |
1309 | size_t i; | |
c6e83800 ZW |
1310 | struct deps *deps; |
1311 | ||
1312 | /* Avoid allocating the deps buffer if we don't need it. | |
1313 | (This flag may be true without there having been -MT or -MQ | |
1314 | options, but we'll still need the deps buffer.) */ | |
1315 | if (!deps_seen) | |
1316 | return; | |
1317 | ||
1318 | deps = cpp_get_deps (parse_in); | |
f4ff5a69 NB |
1319 | |
1320 | for (i = 0; i < deferred_count; i++) | |
1321 | { | |
1322 | struct deferred_opt *opt = &deferred_opts[i]; | |
1323 | ||
c1bad961 | 1324 | if (opt->code == OPT_MT || opt->code == OPT_MQ) |
c6e83800 | 1325 | deps_add_target (deps, opt->arg, opt->code == OPT_MQ); |
f4ff5a69 | 1326 | } |
f4ff5a69 NB |
1327 | } |
1328 | ||
1329 | /* These settings are appropriate for GCC, but not necessarily so for | |
1330 | cpplib as a library. */ | |
1331 | static void | |
2f6e4e97 | 1332 | sanitize_cpp_opts (void) |
f4ff5a69 NB |
1333 | { |
1334 | /* If we don't know what style of dependencies to output, complain | |
1335 | if any other dependency switches have been given. */ | |
1336 | if (deps_seen && cpp_opts->deps.style == DEPS_NONE) | |
1337 | error ("to generate dependencies you must specify either -M or -MM"); | |
1338 | ||
1339 | /* -dM and dependencies suppress normal output; do it here so that | |
1340 | the last -d[MDN] switch overrides earlier ones. */ | |
63973df3 NB |
1341 | if (flag_dump_macros == 'M') |
1342 | flag_no_output = 1; | |
f4ff5a69 NB |
1343 | |
1344 | /* Disable -dD, -dN and -dI if normal output is suppressed. Allow | |
1345 | -dM since at least glibc relies on -M -dM to work. */ | |
6c6cfbfd | 1346 | /* Also, flag_no_output implies flag_no_line_commands, always. */ |
63973df3 | 1347 | if (flag_no_output) |
f4ff5a69 | 1348 | { |
63973df3 NB |
1349 | if (flag_dump_macros != 'M') |
1350 | flag_dump_macros = 0; | |
1351 | flag_dump_includes = 0; | |
f9c65623 | 1352 | flag_no_line_commands = 1; |
76c3e73e | 1353 | } |
f4ff5a69 NB |
1354 | |
1355 | cpp_opts->unsigned_char = !flag_signed_char; | |
1356 | cpp_opts->stdc_0_in_system_headers = STDC_0_IN_SYSTEM_HEADERS; | |
1357 | ||
1358 | /* We want -Wno-long-long to override -pedantic -std=non-c99 | |
1359 | and/or -Wtraditional, whatever the ordering. */ | |
1360 | cpp_opts->warn_long_long | |
1361 | = warn_long_long && ((!flag_isoc99 && pedantic) || warn_traditional); | |
b20d9f0c | 1362 | |
e5b79219 RH |
1363 | /* Similarly with -Wno-variadic-macros. No check for c99 here, since |
1364 | this also turns off warnings about GCCs extension. */ | |
1365 | cpp_opts->warn_variadic_macros | |
1366 | = warn_variadic_macros && (pedantic || warn_traditional); | |
1367 | ||
b20d9f0c AO |
1368 | /* If we're generating preprocessor output, emit current directory |
1369 | if explicitly requested or if debugging information is enabled. | |
1370 | ??? Maybe we should only do it for debugging formats that | |
1371 | actually output the current directory? */ | |
1372 | if (flag_working_directory == -1) | |
1373 | flag_working_directory = (debug_info_level != DINFO_LEVEL_NONE); | |
f4ff5a69 NB |
1374 | } |
1375 | ||
5793b276 NB |
1376 | /* Add include path with a prefix at the front of its name. */ |
1377 | static void | |
2f6e4e97 | 1378 | add_prefixed_path (const char *suffix, size_t chain) |
5793b276 | 1379 | { |
52999738 | 1380 | char *path; |
5793b276 | 1381 | const char *prefix; |
52999738 | 1382 | size_t prefix_len, suffix_len; |
5793b276 | 1383 | |
52999738 ZW |
1384 | suffix_len = strlen (suffix); |
1385 | prefix = iprefix ? iprefix : cpp_GCC_INCLUDE_DIR; | |
1386 | prefix_len = iprefix ? strlen (iprefix) : cpp_GCC_INCLUDE_DIR_len; | |
1387 | ||
5d038c4c | 1388 | path = (char *) xmalloc (prefix_len + suffix_len + 1); |
52999738 ZW |
1389 | memcpy (path, prefix, prefix_len); |
1390 | memcpy (path + prefix_len, suffix, suffix_len); | |
1391 | path[prefix_len + suffix_len] = '\0'; | |
1392 | ||
b02398bd | 1393 | add_path (path, chain, 0, false); |
5793b276 NB |
1394 | } |
1395 | ||
8e9ea4d7 PB |
1396 | /* Handle -D, -U, -A, -imacros, and the first -include. */ |
1397 | static void | |
1398 | finish_options (void) | |
255c10b1 | 1399 | { |
255c10b1 NB |
1400 | if (!cpp_opts->preprocessed) |
1401 | { | |
c1bad961 NB |
1402 | size_t i; |
1403 | ||
1fb2fbeb PB |
1404 | cb_file_change (parse_in, |
1405 | linemap_add (&line_table, LC_RENAME, 0, | |
1406 | _("<built-in>"), 0)); | |
1407 | ||
6e270179 | 1408 | cpp_init_builtins (parse_in, flag_hosted); |
c1bad961 | 1409 | c_cpp_builtins (parse_in); |
78b8811a HPN |
1410 | |
1411 | /* We're about to send user input to cpplib, so make it warn for | |
1412 | things that we previously (when we sent it internal definitions) | |
1413 | told it to not warn. | |
1414 | ||
1415 | C99 permits implementation-defined characters in identifiers. | |
1416 | The documented meaning of -std= is to turn off extensions that | |
1417 | conflict with the specified standard, and since a strictly | |
1418 | conforming program cannot contain a '$', we do not condition | |
1419 | their acceptance on the -std= setting. */ | |
1420 | cpp_opts->warn_dollars = (cpp_opts->pedantic && !cpp_opts->c99); | |
1421 | ||
112598f4 PB |
1422 | cb_file_change (parse_in, |
1423 | linemap_add (&line_table, LC_RENAME, 0, | |
1424 | _("<command-line>"), 0)); | |
1425 | ||
c1bad961 NB |
1426 | for (i = 0; i < deferred_count; i++) |
1427 | { | |
1428 | struct deferred_opt *opt = &deferred_opts[i]; | |
1429 | ||
1430 | if (opt->code == OPT_D) | |
1431 | cpp_define (parse_in, opt->arg); | |
1432 | else if (opt->code == OPT_U) | |
1433 | cpp_undef (parse_in, opt->arg); | |
1434 | else if (opt->code == OPT_A) | |
1435 | { | |
1436 | if (opt->arg[0] == '-') | |
1437 | cpp_unassert (parse_in, opt->arg + 1); | |
1438 | else | |
1439 | cpp_assert (parse_in, opt->arg); | |
1440 | } | |
1441 | } | |
255c10b1 | 1442 | |
c1bad961 | 1443 | /* Handle -imacros after -D and -U. */ |
255c10b1 NB |
1444 | for (i = 0; i < deferred_count; i++) |
1445 | { | |
1446 | struct deferred_opt *opt = &deferred_opts[i]; | |
1447 | ||
1448 | if (opt->code == OPT_imacros | |
1449 | && cpp_push_include (parse_in, opt->arg)) | |
9b49a0aa | 1450 | { |
6614fd40 | 1451 | /* Disable push_command_line_include callback for now. */ |
9b49a0aa PB |
1452 | include_cursor = deferred_count + 1; |
1453 | cpp_scan_nooutput (parse_in); | |
1454 | } | |
255c10b1 NB |
1455 | } |
1456 | } | |
1457 | ||
e6ebd07b | 1458 | include_cursor = 0; |
255c10b1 NB |
1459 | push_command_line_include (); |
1460 | } | |
1461 | ||
23345bbb NB |
1462 | /* Give CPP the next file given by -include, if any. */ |
1463 | static void | |
2f6e4e97 | 1464 | push_command_line_include (void) |
23345bbb | 1465 | { |
23345bbb NB |
1466 | while (include_cursor < deferred_count) |
1467 | { | |
1468 | struct deferred_opt *opt = &deferred_opts[include_cursor++]; | |
2f6e4e97 | 1469 | |
3f75a254 | 1470 | if (!cpp_opts->preprocessed && opt->code == OPT_include |
31703a61 | 1471 | && cpp_push_include (parse_in, opt->arg)) |
23345bbb NB |
1472 | return; |
1473 | } | |
1474 | ||
1475 | if (include_cursor == deferred_count) | |
1476 | { | |
31703a61 | 1477 | include_cursor++; |
23345bbb NB |
1478 | /* -Wunused-macros should only warn about macros defined hereafter. */ |
1479 | cpp_opts->warn_unused_macros = warn_unused_macros; | |
8e9ea4d7 | 1480 | /* Restore the line map from <command line>. */ |
3f75a254 | 1481 | if (!cpp_opts->preprocessed) |
3e6da82b | 1482 | cpp_change_file (parse_in, LC_RENAME, this_input_filename); |
8e9ea4d7 PB |
1483 | |
1484 | /* Set this here so the client can change the option if it wishes, | |
1485 | and after stacking the main file so we don't trace the main file. */ | |
1486 | line_table.trace_includes = cpp_opts->print_include_names; | |
23345bbb NB |
1487 | } |
1488 | } | |
1489 | ||
1490 | /* File change callback. Has to handle -include files. */ | |
1491 | static void | |
e18476eb | 1492 | cb_file_change (cpp_reader * ARG_UNUSED (pfile), |
2f6e4e97 | 1493 | const struct line_map *new_map) |
23345bbb NB |
1494 | { |
1495 | if (flag_preprocess_only) | |
1496 | pp_file_change (new_map); | |
1497 | else | |
1498 | fe_file_change (new_map); | |
1499 | ||
31703a61 | 1500 | if (new_map == 0 || (new_map->reason == LC_LEAVE && MAIN_FILE_P (new_map))) |
23345bbb NB |
1501 | push_command_line_include (); |
1502 | } | |
1503 | ||
8e9ea4d7 | 1504 | void |
e18476eb | 1505 | cb_dir_change (cpp_reader * ARG_UNUSED (pfile), const char *dir) |
8e9ea4d7 | 1506 | { |
3f75a254 | 1507 | if (!set_src_pwd (dir)) |
d4ee4d25 | 1508 | warning (0, "too late for # directive to set debug directory"); |
8e9ea4d7 PB |
1509 | } |
1510 | ||
f4ff5a69 NB |
1511 | /* Set the C 89 standard (with 1994 amendments if C94, without GNU |
1512 | extensions if ISO). There is no concept of gnu94. */ | |
1513 | static void | |
2f6e4e97 | 1514 | set_std_c89 (int c94, int iso) |
f4ff5a69 NB |
1515 | { |
1516 | cpp_set_lang (parse_in, c94 ? CLK_STDC94: iso ? CLK_STDC89: CLK_GNUC89); | |
1517 | flag_iso = iso; | |
1518 | flag_no_asm = iso; | |
1519 | flag_no_gnu_keywords = iso; | |
1520 | flag_no_nonansi_builtin = iso; | |
f4ff5a69 NB |
1521 | flag_isoc94 = c94; |
1522 | flag_isoc99 = 0; | |
76c3e73e NB |
1523 | } |
1524 | ||
b4a93904 NB |
1525 | /* Set the C 99 standard (without GNU extensions if ISO). */ |
1526 | static void | |
2f6e4e97 | 1527 | set_std_c99 (int iso) |
b4a93904 NB |
1528 | { |
1529 | cpp_set_lang (parse_in, iso ? CLK_STDC99: CLK_GNUC99); | |
1530 | flag_no_asm = iso; | |
1531 | flag_no_nonansi_builtin = iso; | |
b4a93904 NB |
1532 | flag_iso = iso; |
1533 | flag_isoc99 = 1; | |
1534 | flag_isoc94 = 1; | |
b4a93904 NB |
1535 | } |
1536 | ||
f749a36b NB |
1537 | /* Set the C++ 98 standard (without GNU extensions if ISO). */ |
1538 | static void | |
2f6e4e97 | 1539 | set_std_cxx98 (int iso) |
f749a36b NB |
1540 | { |
1541 | cpp_set_lang (parse_in, iso ? CLK_CXX98: CLK_GNUCXX); | |
1542 | flag_no_gnu_keywords = iso; | |
1543 | flag_no_nonansi_builtin = iso; | |
f749a36b NB |
1544 | flag_iso = iso; |
1545 | } | |
1546 | ||
966541e3 DG |
1547 | /* Set the C++ 0x working draft "standard" (without GNU extensions if ISO). */ |
1548 | static void | |
1549 | set_std_cxx0x (int iso) | |
1550 | { | |
1551 | cpp_set_lang (parse_in, iso ? CLK_CXX0X: CLK_GNUCXX0X); | |
1552 | flag_no_gnu_keywords = iso; | |
1553 | flag_no_nonansi_builtin = iso; | |
1554 | flag_iso = iso; | |
1555 | flag_cpp0x = 1; | |
1556 | } | |
1557 | ||
0b6f2917 NB |
1558 | /* Handle setting implicit to ON. */ |
1559 | static void | |
2f6e4e97 | 1560 | set_Wimplicit (int on) |
0b6f2917 NB |
1561 | { |
1562 | warn_implicit = on; | |
1563 | warn_implicit_int = on; | |
1564 | if (on) | |
1565 | { | |
1566 | if (mesg_implicit_function_declaration != 2) | |
1567 | mesg_implicit_function_declaration = 1; | |
1568 | } | |
1569 | else | |
1570 | mesg_implicit_function_declaration = 0; | |
1571 | } | |
1572 | ||
4b7091eb | 1573 | /* Args to -d specify what to dump. Silently ignore |
05713b80 | 1574 | unrecognized options; they may be aimed at toplev.c. */ |
0b6f2917 | 1575 | static void |
2f6e4e97 | 1576 | handle_OPT_d (const char *arg) |
0b6f2917 | 1577 | { |
4b7091eb NB |
1578 | char c; |
1579 | ||
1580 | while ((c = *arg++) != '\0') | |
1581 | switch (c) | |
1582 | { | |
63973df3 NB |
1583 | case 'M': /* Dump macros only. */ |
1584 | case 'N': /* Dump names. */ | |
1585 | case 'D': /* Dump definitions. */ | |
1586 | flag_dump_macros = c; | |
4b7091eb NB |
1587 | break; |
1588 | ||
1589 | case 'I': | |
63973df3 | 1590 | flag_dump_includes = 1; |
4b7091eb NB |
1591 | break; |
1592 | } | |
0b6f2917 | 1593 | } |