]>
Commit | Line | Data |
---|---|---|
0b6f2917 | 1 | /* C/ObjC/C++ command line option handling. |
c75c517d | 2 | Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
6ac01510 | 3 | Free Software Foundation, Inc. |
0b6f2917 NB |
4 | Contributed by Neil Booth. |
5 | ||
6 | This file is part of GCC. | |
7 | ||
8 | GCC is free software; you can redistribute it and/or modify it under | |
9 | the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 10 | Software Foundation; either version 3, or (at your option) any later |
0b6f2917 NB |
11 | version. |
12 | ||
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
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 | 35 | #include "cppdefault.h" |
670637ee | 36 | #include "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" |
1f1d5130 | 41 | #include "target.h" |
0b2dffe1 | 42 | #include "tm_p.h" |
148e4216 | 43 | #include "c-tree.h" /* For c_cpp_error. */ |
5793b276 | 44 | |
b1822ccc NB |
45 | #ifndef DOLLARS_IN_IDENTIFIERS |
46 | # define DOLLARS_IN_IDENTIFIERS true | |
47 | #endif | |
48 | ||
5793b276 NB |
49 | #ifndef TARGET_SYSTEM_ROOT |
50 | # define TARGET_SYSTEM_ROOT NULL | |
51 | #endif | |
0b6f2917 | 52 | |
7cd60054 AM |
53 | #ifndef TARGET_OPTF |
54 | #define TARGET_OPTF(ARG) | |
55 | #endif | |
56 | ||
f4ff5a69 | 57 | /* CPP's options. */ |
d2e796ad | 58 | cpp_options *cpp_opts; |
18bdccaa | 59 | |
460bd0e3 | 60 | /* Input filename. */ |
89e9faee | 61 | static const char *this_input_filename; |
460bd0e3 | 62 | |
76c3e73e NB |
63 | /* Filename and stream for preprocessed output. */ |
64 | static const char *out_fname; | |
65 | static FILE *out_stream; | |
66 | ||
67 | /* Append dependencies to deps_file. */ | |
68 | static bool deps_append; | |
69 | ||
f4ff5a69 NB |
70 | /* If dependency switches (-MF etc.) have been given. */ |
71 | static bool deps_seen; | |
72 | ||
5793b276 NB |
73 | /* If -v seen. */ |
74 | static bool verbose; | |
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 | ||
87cf0651 SB |
199 | /* -Werror= may set a warning option to enable a warning that is emitted |
200 | by the preprocessor. Set any corresponding flag in cpp_opts. */ | |
201 | ||
202 | static void | |
203 | warning_as_error_callback (int option_index) | |
204 | { | |
205 | switch (option_index) | |
206 | { | |
207 | default: | |
208 | /* Ignore options not associated with the preprocessor. */ | |
209 | break; | |
210 | ||
211 | case OPT_Wdeprecated: | |
212 | cpp_opts->warn_deprecated = 1; | |
213 | break; | |
214 | ||
215 | case OPT_Wcomment: | |
216 | case OPT_Wcomments: | |
217 | cpp_opts->warn_comments = 1; | |
218 | break; | |
219 | ||
220 | case OPT_Wtrigraphs: | |
221 | cpp_opts->warn_trigraphs = 1; | |
222 | break; | |
223 | ||
224 | case OPT_Wmultichar: | |
225 | cpp_opts->warn_multichar = 1; | |
226 | break; | |
227 | ||
228 | case OPT_Wtraditional: | |
229 | cpp_opts->warn_traditional = 1; | |
230 | break; | |
231 | ||
232 | case OPT_Wlong_long: | |
233 | cpp_opts->warn_long_long = 1; | |
234 | break; | |
235 | ||
236 | case OPT_Wendif_labels: | |
237 | cpp_opts->warn_endif_labels = 1; | |
238 | break; | |
239 | ||
240 | case OPT_Wvariadic_macros: | |
241 | /* Set the local flag that is used later to update cpp_opts. */ | |
242 | warn_variadic_macros = 1; | |
243 | break; | |
244 | ||
245 | case OPT_Wbuiltin_macro_redefined: | |
246 | cpp_opts->warn_builtin_macro_redefined = 1; | |
247 | break; | |
248 | ||
249 | case OPT_Wundef: | |
250 | cpp_opts->warn_undef = 1; | |
251 | break; | |
252 | ||
253 | case OPT_Wunused_macros: | |
254 | /* Set the local flag that is used later to update cpp_opts. */ | |
255 | warn_unused_macros = 1; | |
256 | break; | |
257 | ||
258 | case OPT_Wc___compat: | |
259 | /* Add warnings in the same way as c_common_handle_option below. */ | |
260 | if (warn_enum_compare == -1) | |
261 | warn_enum_compare = 1; | |
262 | if (warn_jump_misses_init == -1) | |
263 | warn_jump_misses_init = 1; | |
264 | cpp_opts->warn_cxx_operator_names = 1; | |
265 | break; | |
266 | ||
267 | case OPT_Wnormalized_: | |
268 | inform (input_location, "-Werror=normalized=: Set -Wnormalized=nfc"); | |
269 | cpp_opts->warn_normalize = normalized_C; | |
270 | break; | |
271 | ||
272 | case OPT_Winvalid_pch: | |
273 | cpp_opts->warn_invalid_pch = 1; | |
274 | break; | |
275 | ||
276 | case OPT_Wcpp: | |
277 | /* Handled by standard diagnostics using the option's associated | |
278 | boolean variable. */ | |
279 | break; | |
280 | } | |
281 | } | |
282 | ||
0b6f2917 | 283 | /* Common initialization before parsing options. */ |
b86f6cd9 | 284 | unsigned int |
afd85c1a | 285 | c_common_init_options (unsigned int argc, const char **argv) |
0b6f2917 | 286 | { |
b86f6cd9 | 287 | static const unsigned int lang_flags[] = {CL_C, CL_ObjC, CL_CXX, CL_ObjCXX}; |
afd85c1a | 288 | unsigned int i, result; |
148e4216 | 289 | struct cpp_callbacks *cb; |
37fa72e9 | 290 | |
87cf0651 SB |
291 | /* Register callback for warnings enabled by -Werror=. */ |
292 | register_warning_as_error_callback (warning_as_error_callback); | |
293 | ||
37fa72e9 NB |
294 | /* This is conditionalized only because that is the way the front |
295 | ends used to do it. Maybe this should be unconditional? */ | |
296 | if (c_dialect_cxx ()) | |
297 | { | |
298 | /* By default wrap lines at 80 characters. Is getenv | |
299 | ("COLUMNS") preferable? */ | |
300 | diagnostic_line_cutoff (global_dc) = 80; | |
301 | /* By default, emit location information once for every | |
302 | diagnostic message. */ | |
303 | diagnostic_prefixing_rule (global_dc) = DIAGNOSTICS_SHOW_PREFIX_ONCE; | |
304 | } | |
305 | ||
306 | parse_in = cpp_create_reader (c_dialect_cxx () ? CLK_GNUCXX: CLK_GNUC89, | |
5ffeb913 | 307 | ident_hash, line_table); |
148e4216 JM |
308 | cb = cpp_get_callbacks (parse_in); |
309 | cb->error = c_cpp_error; | |
37fa72e9 | 310 | |
18bdccaa | 311 | cpp_opts = cpp_get_options (parse_in); |
b1822ccc | 312 | cpp_opts->dollars_in_ident = DOLLARS_IN_IDENTIFIERS; |
37fa72e9 | 313 | cpp_opts->objc = c_dialect_objc (); |
78b8811a HPN |
314 | |
315 | /* Reset to avoid warnings on internal definitions. We set it just | |
316 | before passing on command-line options to cpplib. */ | |
317 | cpp_opts->warn_dollars = 0; | |
318 | ||
37fa72e9 NB |
319 | flag_exceptions = c_dialect_cxx (); |
320 | warn_pointer_arith = c_dialect_cxx (); | |
d539b114 | 321 | warn_write_strings = c_dialect_cxx(); |
a406865a | 322 | flag_warn_unused_result = true; |
2772ef3e | 323 | |
4ac1edaf PC |
324 | /* By default, C99-like requirements for complex multiply and divide. */ |
325 | flag_complex_method = 2; | |
326 | ||
5d038c4c | 327 | deferred_opts = XNEWVEC (struct deferred_opt, argc); |
b86f6cd9 | 328 | |
33de9573 NB |
329 | result = lang_flags[c_language]; |
330 | ||
afd85c1a | 331 | if (c_language == clk_c) |
33de9573 | 332 | { |
afd85c1a RS |
333 | /* If preprocessing assembly language, accept any of the C-family |
334 | front end options since the driver may pass them through. */ | |
335 | for (i = 1; i < argc; i++) | |
336 | if (! strcmp (argv[i], "-lang-asm")) | |
337 | { | |
338 | result |= CL_C | CL_ObjC | CL_CXX | CL_ObjCXX; | |
339 | break; | |
340 | } | |
33de9573 | 341 | } |
33de9573 NB |
342 | |
343 | return result; | |
0b6f2917 NB |
344 | } |
345 | ||
b20d9f0c | 346 | /* Handle switch SCODE with argument ARG. VALUE is true, unless no- |
2772ef3e NB |
347 | form of an -f or -W option was given. Returns 0 if the switch was |
348 | invalid, a negative number to prevent language-independent | |
349 | processing in toplev.c (a hack necessary for the short-term). */ | |
0b6f2917 | 350 | int |
7b086b11 | 351 | c_common_handle_option (size_t scode, const char *arg, int value) |
0b6f2917 | 352 | { |
2772ef3e NB |
353 | const struct cl_option *option = &cl_options[scode]; |
354 | enum opt_code code = (enum opt_code) scode; | |
f18754d6 | 355 | int result = 1; |
2772ef3e | 356 | |
69723be2 SB |
357 | /* Prevent resetting the language standard to a C dialect when the driver |
358 | has already determined that we're looking at assembler input. */ | |
359 | bool preprocessing_asm_p = (cpp_get_options (parse_in)->lang == CLK_ASM); | |
b8698a0f | 360 | |
fef3106c | 361 | switch (code) |
0b6f2917 | 362 | { |
2772ef3e | 363 | default: |
7619c085 | 364 | if (cl_options[code].flags & (CL_C | CL_CXX | CL_ObjC | CL_ObjCXX)) |
1f1d5130 MS |
365 | { |
366 | if ((option->flags & CL_TARGET) | |
367 | && ! targetcm.handle_c_option (scode, arg, value)) | |
368 | result = 0; | |
369 | break; | |
370 | } | |
afd85c1a | 371 | result = 0; |
33de9573 | 372 | break; |
0b6f2917 | 373 | |
fef3106c | 374 | case OPT__output_pch_: |
17211ab5 GK |
375 | pch_file = arg; |
376 | break; | |
377 | ||
c1bad961 NB |
378 | case OPT_A: |
379 | defer_opt (code, arg); | |
380 | break; | |
381 | ||
4b7091eb NB |
382 | case OPT_C: |
383 | cpp_opts->discard_comments = 0; | |
384 | break; | |
385 | ||
386 | case OPT_CC: | |
387 | cpp_opts->discard_comments = 0; | |
388 | cpp_opts->discard_comments_in_macro_exp = 0; | |
389 | break; | |
390 | ||
c1bad961 NB |
391 | case OPT_D: |
392 | defer_opt (code, arg); | |
393 | break; | |
394 | ||
0b6f2917 NB |
395 | case OPT_E: |
396 | flag_preprocess_only = 1; | |
397 | break; | |
398 | ||
4b7091eb NB |
399 | case OPT_H: |
400 | cpp_opts->print_include_names = 1; | |
401 | break; | |
402 | ||
94d1613b MS |
403 | case OPT_F: |
404 | TARGET_OPTF (xstrdup (arg)); | |
405 | break; | |
406 | ||
5793b276 NB |
407 | case OPT_I: |
408 | if (strcmp (arg, "-")) | |
b02398bd | 409 | add_path (xstrdup (arg), BRACKET, 0, true); |
5793b276 NB |
410 | else |
411 | { | |
412 | if (quote_chain_split) | |
413 | error ("-I- specified twice"); | |
414 | quote_chain_split = true; | |
415 | split_quote_chain (); | |
1f5b3869 | 416 | inform (input_location, "obsolete option -I- used, please use -iquote instead"); |
5793b276 NB |
417 | } |
418 | break; | |
419 | ||
f4ff5a69 NB |
420 | case OPT_M: |
421 | case OPT_MM: | |
422 | /* When doing dependencies with -M or -MM, suppress normal | |
423 | preprocessed output, but still do -dM etc. as software | |
424 | depends on this. Preprocessed output does occur if -MD, -MMD | |
425 | or environment var dependency generation is used. */ | |
426 | cpp_opts->deps.style = (code == OPT_M ? DEPS_SYSTEM: DEPS_USER); | |
63973df3 | 427 | flag_no_output = 1; |
f4ff5a69 NB |
428 | break; |
429 | ||
430 | case OPT_MD: | |
431 | case OPT_MMD: | |
432 | cpp_opts->deps.style = (code == OPT_MD ? DEPS_SYSTEM: DEPS_USER); | |
74dc6a11 | 433 | cpp_opts->deps.need_preprocessor_output = true; |
f4ff5a69 NB |
434 | deps_file = arg; |
435 | break; | |
436 | ||
437 | case OPT_MF: | |
438 | deps_seen = true; | |
439 | deps_file = arg; | |
440 | break; | |
441 | ||
442 | case OPT_MG: | |
443 | deps_seen = true; | |
444 | cpp_opts->deps.missing_files = true; | |
445 | break; | |
446 | ||
447 | case OPT_MP: | |
448 | deps_seen = true; | |
449 | cpp_opts->deps.phony_targets = true; | |
450 | break; | |
451 | ||
452 | case OPT_MQ: | |
453 | case OPT_MT: | |
454 | deps_seen = true; | |
455 | defer_opt (code, arg); | |
456 | break; | |
457 | ||
4b7091eb | 458 | case OPT_P: |
63973df3 | 459 | flag_no_line_commands = 1; |
4b7091eb NB |
460 | break; |
461 | ||
b20d9f0c AO |
462 | case OPT_fworking_directory: |
463 | flag_working_directory = value; | |
464 | break; | |
465 | ||
c1bad961 NB |
466 | case OPT_U: |
467 | defer_opt (code, arg); | |
468 | break; | |
469 | ||
0b6f2917 | 470 | case OPT_Wall: |
e73f7547 | 471 | warn_unused = value; |
7b086b11 NB |
472 | set_Wformat (value); |
473 | set_Wimplicit (value); | |
474 | warn_char_subscripts = value; | |
475 | warn_missing_braces = value; | |
476 | warn_parentheses = value; | |
477 | warn_return_type = value; | |
478 | warn_sequence_point = value; /* Was C only. */ | |
7b086b11 | 479 | warn_switch = value; |
027b740e MLI |
480 | if (warn_strict_aliasing == -1) |
481 | set_Wstrict_aliasing (value); | |
c116cd05 | 482 | warn_address = value; |
027b740e MLI |
483 | if (warn_strict_overflow == -1) |
484 | warn_strict_overflow = value; | |
590b1f2d | 485 | warn_array_bounds = value; |
16302daf | 486 | warn_volatile_register_var = value; |
2f6e4e97 | 487 | |
0b6f2917 | 488 | /* Only warn about unknown pragmas that are not in system |
2f6e4e97 | 489 | headers. */ |
7b086b11 | 490 | warn_unknown_pragmas = value; |
0b6f2917 | 491 | |
62a67c94 | 492 | warn_uninitialized = value; |
0b6f2917 | 493 | |
37fa72e9 | 494 | if (!c_dialect_cxx ()) |
4003301d MLI |
495 | { |
496 | /* We set this to 2 here, but 1 in -Wmain, so -ffreestanding | |
497 | can turn it off only if it's not explicit. */ | |
498 | if (warn_main == -1) | |
499 | warn_main = (value ? 2 : 0); | |
6866c6e8 ILT |
500 | |
501 | /* In C, -Wall turns on -Wenum-compare, which we do here. | |
502 | In C++ it is on by default, which is done in | |
503 | c_common_post_options. */ | |
504 | if (warn_enum_compare == -1) | |
505 | warn_enum_compare = value; | |
4003301d | 506 | } |
0b6f2917 NB |
507 | else |
508 | { | |
509 | /* C++-specific warnings. */ | |
384d3837 | 510 | warn_sign_compare = value; |
7b086b11 | 511 | warn_reorder = value; |
e1f1ee86 | 512 | warn_cxx0x_compat = value; |
0b6f2917 | 513 | } |
18bdccaa | 514 | |
7b086b11 NB |
515 | cpp_opts->warn_trigraphs = value; |
516 | cpp_opts->warn_comments = value; | |
517 | cpp_opts->warn_num_sign_change = value; | |
f4e9414e AO |
518 | |
519 | if (warn_pointer_sign == -1) | |
8c684300 | 520 | warn_pointer_sign = value; |
0b6f2917 NB |
521 | break; |
522 | ||
c047ce93 SB |
523 | case OPT_Wbuiltin_macro_redefined: |
524 | cpp_opts->warn_builtin_macro_redefined = value; | |
525 | break; | |
526 | ||
18bdccaa NB |
527 | case OPT_Wcomment: |
528 | case OPT_Wcomments: | |
7b086b11 | 529 | cpp_opts->warn_comments = value; |
18bdccaa NB |
530 | break; |
531 | ||
6866c6e8 ILT |
532 | case OPT_Wc___compat: |
533 | /* Because -Wenum-compare is the default in C++, -Wc++-compat | |
534 | implies -Wenum-compare. */ | |
535 | if (warn_enum_compare == -1 && value) | |
536 | warn_enum_compare = value; | |
e1b7793c | 537 | /* Because C++ always warns about a goto which misses an |
13ebf17b | 538 | initialization, -Wc++-compat turns on -Wjump-misses-init. */ |
e1b7793c ILT |
539 | if (warn_jump_misses_init == -1 && value) |
540 | warn_jump_misses_init = value; | |
3d8b2a98 | 541 | cpp_opts->warn_cxx_operator_names = value; |
6866c6e8 ILT |
542 | break; |
543 | ||
0b6f2917 | 544 | case OPT_Wdeprecated: |
7b086b11 | 545 | cpp_opts->warn_deprecated = value; |
0b6f2917 NB |
546 | break; |
547 | ||
18bdccaa | 548 | case OPT_Wendif_labels: |
7b086b11 | 549 | cpp_opts->warn_endif_labels = value; |
18bdccaa NB |
550 | break; |
551 | ||
552 | case OPT_Werror: | |
7783b402 | 553 | global_dc->warning_as_error_requested = value; |
18bdccaa NB |
554 | break; |
555 | ||
b8698a0f | 556 | case OPT_Werror_implicit_function_declaration: |
dc90f45b MLI |
557 | /* For backward compatibility, this is the same as |
558 | -Werror=implicit-function-declaration. */ | |
b8698a0f | 559 | enable_warning_as_error ("implicit-function-declaration", value, CL_C | CL_ObjC); |
0b6f2917 NB |
560 | break; |
561 | ||
0b6f2917 | 562 | case OPT_Wformat: |
7b086b11 | 563 | set_Wformat (value); |
0b6f2917 NB |
564 | break; |
565 | ||
fef3106c | 566 | case OPT_Wformat_: |
0b6f2917 NB |
567 | set_Wformat (atoi (arg)); |
568 | break; | |
569 | ||
0b6f2917 | 570 | case OPT_Wimplicit: |
7b086b11 | 571 | set_Wimplicit (value); |
0b6f2917 NB |
572 | break; |
573 | ||
18bdccaa | 574 | case OPT_Wimport: |
bf42e45b | 575 | /* Silently ignore for now. */ |
18bdccaa NB |
576 | break; |
577 | ||
17211ab5 | 578 | case OPT_Winvalid_pch: |
7b086b11 | 579 | cpp_opts->warn_invalid_pch = value; |
17211ab5 GK |
580 | break; |
581 | ||
b02398bd BE |
582 | case OPT_Wmissing_include_dirs: |
583 | cpp_opts->warn_missing_include_dirs = value; | |
584 | break; | |
585 | ||
0b6f2917 | 586 | case OPT_Wmultichar: |
7b086b11 | 587 | cpp_opts->warn_multichar = value; |
0b6f2917 NB |
588 | break; |
589 | ||
50668cf6 GK |
590 | case OPT_Wnormalized_: |
591 | if (!value || (arg && strcasecmp (arg, "none") == 0)) | |
592 | cpp_opts->warn_normalize = normalized_none; | |
593 | else if (!arg || strcasecmp (arg, "nfkc") == 0) | |
594 | cpp_opts->warn_normalize = normalized_KC; | |
595 | else if (strcasecmp (arg, "id") == 0) | |
596 | cpp_opts->warn_normalize = normalized_identifier_C; | |
597 | else if (strcasecmp (arg, "nfc") == 0) | |
598 | cpp_opts->warn_normalize = normalized_C; | |
599 | else | |
600 | error ("argument %qs to %<-Wnormalized%> not recognized", arg); | |
601 | break; | |
602 | ||
0b6f2917 | 603 | case OPT_Wreturn_type: |
7b086b11 | 604 | warn_return_type = value; |
0b6f2917 NB |
605 | break; |
606 | ||
b2f97e4a MM |
607 | case OPT_Wstrict_null_sentinel: |
608 | warn_strict_null_sentinel = value; | |
609 | break; | |
610 | ||
0b6f2917 | 611 | case OPT_Wtraditional: |
7b086b11 | 612 | cpp_opts->warn_traditional = value; |
18bdccaa NB |
613 | break; |
614 | ||
615 | case OPT_Wtrigraphs: | |
7b086b11 | 616 | cpp_opts->warn_trigraphs = value; |
18bdccaa NB |
617 | break; |
618 | ||
619 | case OPT_Wundef: | |
7b086b11 | 620 | cpp_opts->warn_undef = value; |
0b6f2917 NB |
621 | break; |
622 | ||
623 | case OPT_Wunknown_pragmas: | |
624 | /* Set to greater than 1, so that even unknown pragmas in | |
2f6e4e97 | 625 | system headers will be warned about. */ |
7b086b11 | 626 | warn_unknown_pragmas = value * 2; |
0b6f2917 NB |
627 | break; |
628 | ||
18bdccaa | 629 | case OPT_Wunused_macros: |
7b086b11 | 630 | warn_unused_macros = value; |
18bdccaa NB |
631 | break; |
632 | ||
e5b79219 RH |
633 | case OPT_Wvariadic_macros: |
634 | warn_variadic_macros = value; | |
635 | break; | |
636 | ||
0b6f2917 | 637 | case OPT_Wwrite_strings: |
cfb10bd3 | 638 | warn_write_strings = value; |
0b6f2917 | 639 | break; |
2f6e4e97 | 640 | |
efee9ded GDR |
641 | case OPT_Weffc__: |
642 | warn_ecpp = value; | |
643 | if (value) | |
644 | warn_nonvdtor = true; | |
645 | break; | |
646 | ||
f749a36b | 647 | case OPT_ansi: |
37fa72e9 | 648 | if (!c_dialect_cxx ()) |
f749a36b NB |
649 | set_std_c89 (false, true); |
650 | else | |
651 | set_std_cxx98 (true); | |
652 | break; | |
0b6f2917 | 653 | |
4b7091eb NB |
654 | case OPT_d: |
655 | handle_OPT_d (arg); | |
656 | break; | |
657 | ||
0b6f2917 | 658 | case OPT_fcond_mismatch: |
37fa72e9 | 659 | if (!c_dialect_cxx ()) |
0b6f2917 | 660 | { |
7b086b11 | 661 | flag_cond_mismatch = value; |
0b6f2917 NB |
662 | break; |
663 | } | |
664 | /* Fall through. */ | |
665 | ||
666 | case OPT_fall_virtual: | |
7813d14c | 667 | case OPT_falt_external_templates: |
0b6f2917 | 668 | case OPT_fenum_int_equiv: |
7813d14c | 669 | case OPT_fexternal_templates: |
0b6f2917 NB |
670 | case OPT_fguiding_decls: |
671 | case OPT_fhonor_std: | |
672 | case OPT_fhuge_objects: | |
673 | case OPT_flabels_ok: | |
fef3106c | 674 | case OPT_fname_mangling_version_: |
0b6f2917 NB |
675 | case OPT_fnew_abi: |
676 | case OPT_fnonnull_objects: | |
677 | case OPT_fsquangle: | |
678 | case OPT_fstrict_prototype: | |
679 | case OPT_fthis_is_variable: | |
680 | case OPT_fvtable_thunks: | |
681 | case OPT_fxref: | |
a0c8285b | 682 | case OPT_fvtable_gc: |
d4ee4d25 | 683 | warning (0, "switch %qs is no longer supported", option->opt_text); |
0b6f2917 NB |
684 | break; |
685 | ||
686 | case OPT_faccess_control: | |
7b086b11 | 687 | flag_access_control = value; |
0b6f2917 NB |
688 | break; |
689 | ||
0b6f2917 | 690 | case OPT_fasm: |
7b086b11 | 691 | flag_no_asm = !value; |
0b6f2917 NB |
692 | break; |
693 | ||
694 | case OPT_fbuiltin: | |
7b086b11 | 695 | flag_no_builtin = !value; |
0b6f2917 NB |
696 | break; |
697 | ||
698 | case OPT_fbuiltin_: | |
7b086b11 | 699 | if (value) |
4b7091eb NB |
700 | result = 0; |
701 | else | |
702 | disable_builtin_function (arg); | |
0b6f2917 NB |
703 | break; |
704 | ||
ccfc4c91 | 705 | case OPT_fdirectives_only: |
2710d6d7 | 706 | cpp_opts->directives_only = value; |
ccfc4c91 OW |
707 | break; |
708 | ||
0b6f2917 | 709 | case OPT_fdollars_in_identifiers: |
7b086b11 | 710 | cpp_opts->dollars_in_ident = value; |
0b6f2917 NB |
711 | break; |
712 | ||
0b6f2917 | 713 | case OPT_ffreestanding: |
7b086b11 | 714 | value = !value; |
938d968e | 715 | /* Fall through.... */ |
0b6f2917 | 716 | case OPT_fhosted: |
7b086b11 NB |
717 | flag_hosted = value; |
718 | flag_no_builtin = !value; | |
0b6f2917 NB |
719 | break; |
720 | ||
721 | case OPT_fshort_double: | |
7b086b11 | 722 | flag_short_double = value; |
0b6f2917 NB |
723 | break; |
724 | ||
725 | case OPT_fshort_enums: | |
7b086b11 | 726 | flag_short_enums = value; |
0b6f2917 NB |
727 | break; |
728 | ||
729 | case OPT_fshort_wchar: | |
7b086b11 | 730 | flag_short_wchar = value; |
0b6f2917 NB |
731 | break; |
732 | ||
733 | case OPT_fsigned_bitfields: | |
7b086b11 | 734 | flag_signed_bitfields = value; |
0b6f2917 NB |
735 | break; |
736 | ||
737 | case OPT_fsigned_char: | |
7b086b11 | 738 | flag_signed_char = value; |
0b6f2917 NB |
739 | break; |
740 | ||
741 | case OPT_funsigned_bitfields: | |
7b086b11 | 742 | flag_signed_bitfields = !value; |
0b6f2917 NB |
743 | break; |
744 | ||
745 | case OPT_funsigned_char: | |
7b086b11 | 746 | flag_signed_char = !value; |
0b6f2917 NB |
747 | break; |
748 | ||
749 | case OPT_fcheck_new: | |
7b086b11 | 750 | flag_check_new = value; |
0b6f2917 NB |
751 | break; |
752 | ||
753 | case OPT_fconserve_space: | |
7b086b11 | 754 | flag_conserve_space = value; |
0b6f2917 NB |
755 | break; |
756 | ||
fef3106c | 757 | case OPT_fconstant_string_class_: |
4b7091eb | 758 | constant_string_class_name = arg; |
0b6f2917 NB |
759 | break; |
760 | ||
761 | case OPT_fdefault_inline: | |
7b086b11 | 762 | flag_default_inline = value; |
0b6f2917 NB |
763 | break; |
764 | ||
765 | case OPT_felide_constructors: | |
7b086b11 | 766 | flag_elide_constructors = value; |
0b6f2917 NB |
767 | break; |
768 | ||
769 | case OPT_fenforce_eh_specs: | |
7b086b11 | 770 | flag_enforce_eh_specs = value; |
0b6f2917 NB |
771 | break; |
772 | ||
af15a2fe JM |
773 | case OPT_fextended_identifiers: |
774 | cpp_opts->extended_identifiers = value; | |
775 | break; | |
776 | ||
0b6f2917 | 777 | case OPT_ffor_scope: |
7b086b11 | 778 | flag_new_for_scope = value; |
0b6f2917 NB |
779 | break; |
780 | ||
781 | case OPT_fgnu_keywords: | |
7b086b11 | 782 | flag_no_gnu_keywords = !value; |
0b6f2917 NB |
783 | break; |
784 | ||
785 | case OPT_fgnu_runtime: | |
7b086b11 | 786 | flag_next_runtime = !value; |
0b6f2917 NB |
787 | break; |
788 | ||
789 | case OPT_fhandle_exceptions: | |
d4ee4d25 | 790 | warning (0, "-fhandle-exceptions has been renamed -fexceptions (and is now on by default)"); |
7b086b11 | 791 | flag_exceptions = value; |
0b6f2917 NB |
792 | break; |
793 | ||
794 | case OPT_fimplement_inlines: | |
7b086b11 | 795 | flag_implement_inlines = value; |
0b6f2917 NB |
796 | break; |
797 | ||
798 | case OPT_fimplicit_inline_templates: | |
7b086b11 | 799 | flag_implicit_inline_templates = value; |
0b6f2917 NB |
800 | break; |
801 | ||
802 | case OPT_fimplicit_templates: | |
7b086b11 | 803 | flag_implicit_templates = value; |
0b6f2917 NB |
804 | break; |
805 | ||
00c8e9f6 MS |
806 | case OPT_flax_vector_conversions: |
807 | flag_lax_vector_conversions = value; | |
808 | break; | |
809 | ||
0b6f2917 | 810 | case OPT_fms_extensions: |
7b086b11 | 811 | flag_ms_extensions = value; |
0b6f2917 NB |
812 | break; |
813 | ||
814 | case OPT_fnext_runtime: | |
7b086b11 | 815 | flag_next_runtime = value; |
0b6f2917 NB |
816 | break; |
817 | ||
264fa2db ZL |
818 | case OPT_fnil_receivers: |
819 | flag_nil_receivers = value; | |
820 | break; | |
821 | ||
0b6f2917 | 822 | case OPT_fnonansi_builtins: |
7b086b11 | 823 | flag_no_nonansi_builtin = !value; |
0b6f2917 NB |
824 | break; |
825 | ||
18bdccaa | 826 | case OPT_foperator_names: |
7b086b11 | 827 | cpp_opts->operator_names = value; |
18bdccaa NB |
828 | break; |
829 | ||
0b6f2917 | 830 | case OPT_foptional_diags: |
7b086b11 | 831 | flag_optional_diags = value; |
0b6f2917 NB |
832 | break; |
833 | ||
17211ab5 | 834 | case OPT_fpch_deps: |
7b086b11 | 835 | cpp_opts->restore_pch_deps = value; |
17211ab5 GK |
836 | break; |
837 | ||
c0d578e6 GK |
838 | case OPT_fpch_preprocess: |
839 | flag_pch_preprocess = value; | |
840 | break; | |
841 | ||
0b6f2917 | 842 | case OPT_fpermissive: |
7b086b11 | 843 | flag_permissive = value; |
0b6f2917 NB |
844 | break; |
845 | ||
18bdccaa | 846 | case OPT_fpreprocessed: |
7b086b11 | 847 | cpp_opts->preprocessed = value; |
18bdccaa NB |
848 | break; |
849 | ||
264fa2db ZL |
850 | case OPT_freplace_objc_classes: |
851 | flag_replace_objc_classes = value; | |
852 | break; | |
c22cacf3 | 853 | |
0b6f2917 | 854 | case OPT_frepo: |
7b086b11 NB |
855 | flag_use_repository = value; |
856 | if (value) | |
0b6f2917 NB |
857 | flag_implicit_templates = 0; |
858 | break; | |
859 | ||
860 | case OPT_frtti: | |
7b086b11 | 861 | flag_rtti = value; |
0b6f2917 NB |
862 | break; |
863 | ||
18bdccaa | 864 | case OPT_fshow_column: |
7b086b11 | 865 | cpp_opts->show_column = value; |
18bdccaa NB |
866 | break; |
867 | ||
0b6f2917 | 868 | case OPT_fstats: |
7b086b11 | 869 | flag_detailed_statistics = value; |
0b6f2917 NB |
870 | break; |
871 | ||
fef3106c | 872 | case OPT_ftabstop_: |
18bdccaa | 873 | /* It is documented that we silently ignore silly values. */ |
7b086b11 NB |
874 | if (value >= 1 && value <= 100) |
875 | cpp_opts->tabstop = value; | |
18bdccaa NB |
876 | break; |
877 | ||
e6cc3a24 ZW |
878 | case OPT_fexec_charset_: |
879 | cpp_opts->narrow_charset = arg; | |
880 | break; | |
881 | ||
882 | case OPT_fwide_exec_charset_: | |
883 | cpp_opts->wide_charset = arg; | |
884 | break; | |
885 | ||
16dd5cfe EC |
886 | case OPT_finput_charset_: |
887 | cpp_opts->input_charset = arg; | |
888 | break; | |
889 | ||
fef3106c | 890 | case OPT_ftemplate_depth_: |
124e0d27 MLI |
891 | /* Kept for backwards compatibility. */ |
892 | case OPT_ftemplate_depth_eq: | |
7b086b11 | 893 | max_tinst_depth = value; |
0b6f2917 NB |
894 | break; |
895 | ||
0b6f2917 | 896 | case OPT_fuse_cxa_atexit: |
7b086b11 | 897 | flag_use_cxa_atexit = value; |
0b6f2917 | 898 | break; |
966541e3 | 899 | |
c7b5e395 GK |
900 | case OPT_fuse_cxa_get_exception_ptr: |
901 | flag_use_cxa_get_exception_ptr = value; | |
902 | break; | |
c22cacf3 | 903 | |
d7afec4b ND |
904 | case OPT_fvisibility_inlines_hidden: |
905 | visibility_options.inlines_hidden = value; | |
906 | break; | |
0b6f2917 NB |
907 | |
908 | case OPT_fweak: | |
7b086b11 | 909 | flag_weak = value; |
0b6f2917 | 910 | break; |
264fa2db | 911 | |
40aac948 JM |
912 | case OPT_fthreadsafe_statics: |
913 | flag_threadsafe_statics = value; | |
914 | break; | |
915 | ||
6ea2bd47 JM |
916 | case OPT_fpretty_templates: |
917 | flag_pretty_templates = value; | |
918 | break; | |
919 | ||
264fa2db ZL |
920 | case OPT_fzero_link: |
921 | flag_zero_link = value; | |
922 | break; | |
0b6f2917 NB |
923 | |
924 | case OPT_gen_decls: | |
925 | flag_gen_declaration = 1; | |
926 | break; | |
927 | ||
39ef6592 LC |
928 | case OPT_femit_struct_debug_baseonly: |
929 | set_struct_debug_option ("base"); | |
930 | break; | |
931 | ||
932 | case OPT_femit_struct_debug_reduced: | |
933 | set_struct_debug_option ("dir:ord:sys,dir:gen:any,ind:base"); | |
934 | break; | |
935 | ||
936 | case OPT_femit_struct_debug_detailed_: | |
937 | set_struct_debug_option (arg); | |
938 | break; | |
939 | ||
5793b276 | 940 | case OPT_idirafter: |
b02398bd | 941 | add_path (xstrdup (arg), AFTER, 0, true); |
5793b276 NB |
942 | break; |
943 | ||
255c10b1 | 944 | case OPT_imacros: |
23345bbb NB |
945 | case OPT_include: |
946 | defer_opt (code, arg); | |
947 | break; | |
948 | ||
2b6dd222 JM |
949 | case OPT_imultilib: |
950 | imultilib = arg; | |
951 | break; | |
952 | ||
5793b276 NB |
953 | case OPT_iprefix: |
954 | iprefix = arg; | |
955 | break; | |
956 | ||
4bed3787 | 957 | case OPT_iquote: |
b02398bd | 958 | add_path (xstrdup (arg), QUOTE, 0, true); |
4bed3787 MS |
959 | break; |
960 | ||
5793b276 NB |
961 | case OPT_isysroot: |
962 | sysroot = arg; | |
963 | break; | |
964 | ||
965 | case OPT_isystem: | |
b02398bd | 966 | add_path (xstrdup (arg), SYSTEM, 0, true); |
5793b276 NB |
967 | break; |
968 | ||
969 | case OPT_iwithprefix: | |
970 | add_prefixed_path (arg, SYSTEM); | |
971 | break; | |
972 | ||
973 | case OPT_iwithprefixbefore: | |
974 | add_prefixed_path (arg, BRACKET); | |
975 | break; | |
976 | ||
f749a36b NB |
977 | case OPT_lang_asm: |
978 | cpp_set_lang (parse_in, CLK_ASM); | |
170ea7b9 | 979 | cpp_opts->dollars_in_ident = false; |
f749a36b NB |
980 | break; |
981 | ||
982 | case OPT_lang_objc: | |
983 | cpp_opts->objc = 1; | |
984 | break; | |
985 | ||
4b7091eb | 986 | case OPT_nostdinc: |
5793b276 | 987 | std_inc = false; |
4b7091eb NB |
988 | break; |
989 | ||
fef3106c | 990 | case OPT_nostdinc__: |
5793b276 | 991 | std_cxx_inc = false; |
4b7091eb NB |
992 | break; |
993 | ||
b4a93904 | 994 | case OPT_o: |
76c3e73e NB |
995 | if (!out_fname) |
996 | out_fname = arg; | |
b4a93904 | 997 | else |
f75d3e11 | 998 | error ("output filename specified twice"); |
b4a93904 NB |
999 | break; |
1000 | ||
18bdccaa NB |
1001 | /* We need to handle the -pedantic switches here, rather than in |
1002 | c_common_post_options, so that a subsequent -Wno-endif-labels | |
1003 | is not overridden. */ | |
1004 | case OPT_pedantic_errors: | |
18bdccaa NB |
1005 | case OPT_pedantic: |
1006 | cpp_opts->pedantic = 1; | |
1007 | cpp_opts->warn_endif_labels = 1; | |
f4e9414e AO |
1008 | if (warn_pointer_sign == -1) |
1009 | warn_pointer_sign = 1; | |
89a42ac8 ZW |
1010 | if (warn_overlength_strings == -1) |
1011 | warn_overlength_strings = 1; | |
4003301d MLI |
1012 | if (warn_main == -1) |
1013 | warn_main = 2; | |
18bdccaa NB |
1014 | break; |
1015 | ||
0b6f2917 NB |
1016 | case OPT_print_objc_runtime_info: |
1017 | print_struct_values = 1; | |
1018 | break; | |
1019 | ||
3fd30b88 GK |
1020 | case OPT_print_pch_checksum: |
1021 | c_common_print_pch_checksum (stdout); | |
1022 | exit_after_options = true; | |
1023 | break; | |
1024 | ||
b4a93904 NB |
1025 | case OPT_remap: |
1026 | cpp_opts->remap = 1; | |
0b6f2917 NB |
1027 | break; |
1028 | ||
fef3106c NB |
1029 | case OPT_std_c__98: |
1030 | case OPT_std_gnu__98: | |
69723be2 SB |
1031 | if (!preprocessing_asm_p) |
1032 | set_std_cxx98 (code == OPT_std_c__98 /* ISO */); | |
0b6f2917 NB |
1033 | break; |
1034 | ||
966541e3 DG |
1035 | case OPT_std_c__0x: |
1036 | case OPT_std_gnu__0x: | |
1037 | if (!preprocessing_asm_p) | |
1038 | set_std_cxx0x (code == OPT_std_c__0x /* ISO */); | |
1039 | break; | |
1040 | ||
0b6f2917 | 1041 | case OPT_std_c89: |
7e1542b9 | 1042 | case OPT_std_c90: |
0b6f2917 | 1043 | case OPT_std_iso9899_1990: |
b4a93904 | 1044 | case OPT_std_iso9899_199409: |
69723be2 SB |
1045 | if (!preprocessing_asm_p) |
1046 | set_std_c89 (code == OPT_std_iso9899_199409 /* c94 */, true /* ISO */); | |
f749a36b NB |
1047 | break; |
1048 | ||
1049 | case OPT_std_gnu89: | |
7e1542b9 | 1050 | case OPT_std_gnu90: |
69723be2 SB |
1051 | if (!preprocessing_asm_p) |
1052 | set_std_c89 (false /* c94 */, false /* ISO */); | |
0b6f2917 NB |
1053 | break; |
1054 | ||
1055 | case OPT_std_c99: | |
1056 | case OPT_std_c9x: | |
1057 | case OPT_std_iso9899_1999: | |
1058 | case OPT_std_iso9899_199x: | |
69723be2 SB |
1059 | if (!preprocessing_asm_p) |
1060 | set_std_c99 (true /* ISO */); | |
0b6f2917 NB |
1061 | break; |
1062 | ||
0b6f2917 NB |
1063 | case OPT_std_gnu99: |
1064 | case OPT_std_gnu9x: | |
69723be2 SB |
1065 | if (!preprocessing_asm_p) |
1066 | set_std_c99 (false /* ISO */); | |
0b6f2917 NB |
1067 | break; |
1068 | ||
4b7091eb NB |
1069 | case OPT_trigraphs: |
1070 | cpp_opts->trigraphs = 1; | |
1071 | break; | |
1072 | ||
1073 | case OPT_traditional_cpp: | |
1074 | cpp_opts->traditional = 1; | |
1075 | break; | |
1076 | ||
0b6f2917 NB |
1077 | case OPT_undef: |
1078 | flag_undef = 1; | |
1079 | break; | |
0b6f2917 | 1080 | |
4b7091eb | 1081 | case OPT_v: |
5793b276 | 1082 | verbose = true; |
4b7091eb | 1083 | break; |
bce08d50 L |
1084 | |
1085 | case OPT_Wabi: | |
1086 | warn_psabi = value; | |
1087 | break; | |
4b7091eb | 1088 | } |
0b6f2917 | 1089 | |
0b6f2917 NB |
1090 | return result; |
1091 | } | |
1092 | ||
1093 | /* Post-switch processing. */ | |
1094 | bool | |
8e9ea4d7 | 1095 | c_common_post_options (const char **pfilename) |
0b6f2917 | 1096 | { |
8e9ea4d7 PB |
1097 | struct cpp_callbacks *cb; |
1098 | ||
460bd0e3 | 1099 | /* Canonicalize the input and output filenames. */ |
d1bd0ded GK |
1100 | if (in_fnames == NULL) |
1101 | { | |
5d038c4c | 1102 | in_fnames = XNEWVEC (const char *, 1); |
d1bd0ded GK |
1103 | in_fnames[0] = ""; |
1104 | } | |
1105 | else if (strcmp (in_fnames[0], "-") == 0) | |
1106 | in_fnames[0] = ""; | |
460bd0e3 | 1107 | |
76c3e73e NB |
1108 | if (out_fname == NULL || !strcmp (out_fname, "-")) |
1109 | out_fname = ""; | |
1110 | ||
cd79e210 | 1111 | if (cpp_opts->deps.style == DEPS_NONE) |
76c3e73e NB |
1112 | check_deps_environment_vars (); |
1113 | ||
f4ff5a69 | 1114 | handle_deferred_opts (); |
76c3e73e | 1115 | |
f4ff5a69 | 1116 | sanitize_cpp_opts (); |
460bd0e3 | 1117 | |
2b6dd222 | 1118 | register_include_chains (parse_in, sysroot, iprefix, imultilib, |
37fa72e9 | 1119 | std_inc, std_cxx_inc && c_dialect_cxx (), verbose); |
5793b276 | 1120 | |
c7b5e395 GK |
1121 | #ifdef C_COMMON_OVERRIDE_OPTIONS |
1122 | /* Some machines may reject certain combinations of C | |
1123 | language-specific options. */ | |
1124 | C_COMMON_OVERRIDE_OPTIONS; | |
1125 | #endif | |
1126 | ||
8ce94e44 JM |
1127 | /* Excess precision other than "fast" requires front-end |
1128 | support. */ | |
1129 | if (c_dialect_cxx ()) | |
1130 | { | |
1131 | if (flag_excess_precision_cmdline == EXCESS_PRECISION_STANDARD | |
1132 | && TARGET_FLT_EVAL_METHOD_NON_DEFAULT) | |
1133 | sorry ("-fexcess-precision=standard for C++"); | |
1134 | flag_excess_precision_cmdline = EXCESS_PRECISION_FAST; | |
1135 | } | |
1136 | else if (flag_excess_precision_cmdline == EXCESS_PRECISION_DEFAULT) | |
1137 | flag_excess_precision_cmdline = (flag_iso | |
1138 | ? EXCESS_PRECISION_STANDARD | |
1139 | : EXCESS_PRECISION_FAST); | |
1140 | ||
da1c7394 ILT |
1141 | /* By default we use C99 inline semantics in GNU99 or C99 mode. C99 |
1142 | inline semantics are not supported in GNU89 or C89 mode. */ | |
1143 | if (flag_gnu89_inline == -1) | |
1144 | flag_gnu89_inline = !flag_isoc99; | |
1145 | else if (!flag_gnu89_inline && !flag_isoc99) | |
1146 | error ("-fno-gnu89-inline is only supported in GNU99 or C99 mode"); | |
1147 | ||
093c7153 RH |
1148 | /* Default to ObjC sjlj exception handling if NeXT runtime. */ |
1149 | if (flag_objc_sjlj_exceptions < 0) | |
1150 | flag_objc_sjlj_exceptions = flag_next_runtime; | |
1151 | if (flag_objc_exceptions && !flag_objc_sjlj_exceptions) | |
1152 | flag_exceptions = 1; | |
1153 | ||
62a67c94 MLI |
1154 | /* -Wextra implies the following flags |
1155 | unless explicitly overridden. */ | |
f6aa72dd MLI |
1156 | if (warn_type_limits == -1) |
1157 | warn_type_limits = extra_warnings; | |
2b001724 MLI |
1158 | if (warn_clobbered == -1) |
1159 | warn_clobbered = extra_warnings; | |
b3b433c5 MLI |
1160 | if (warn_empty_body == -1) |
1161 | warn_empty_body = extra_warnings; | |
87f85ea0 ZW |
1162 | if (warn_sign_compare == -1) |
1163 | warn_sign_compare = extra_warnings; | |
eaac4679 RS |
1164 | if (warn_missing_field_initializers == -1) |
1165 | warn_missing_field_initializers = extra_warnings; | |
cb4af25a MLI |
1166 | if (warn_missing_parameter_type == -1) |
1167 | warn_missing_parameter_type = extra_warnings; | |
b1ed4cb4 MLI |
1168 | if (warn_old_style_declaration == -1) |
1169 | warn_old_style_declaration = extra_warnings; | |
7ed322d7 JM |
1170 | if (warn_override_init == -1) |
1171 | warn_override_init = extra_warnings; | |
5db2e9ca DK |
1172 | if (warn_ignored_qualifiers == -1) |
1173 | warn_ignored_qualifiers = extra_warnings; | |
87f85ea0 | 1174 | |
e4e624ab | 1175 | /* -Wpointer-sign is disabled by default, but it is enabled if any |
f4e9414e AO |
1176 | of -Wall or -pedantic are given. */ |
1177 | if (warn_pointer_sign == -1) | |
1178 | warn_pointer_sign = 0; | |
1179 | ||
027b740e MLI |
1180 | if (warn_strict_aliasing == -1) |
1181 | warn_strict_aliasing = 0; | |
1182 | if (warn_strict_overflow == -1) | |
1183 | warn_strict_overflow = 0; | |
e1b7793c ILT |
1184 | if (warn_jump_misses_init == -1) |
1185 | warn_jump_misses_init = 0; | |
027b740e | 1186 | |
89a42ac8 ZW |
1187 | /* -Woverlength-strings is off by default, but is enabled by -pedantic. |
1188 | It is never enabled in C++, as the minimum limit is not normative | |
1189 | in that standard. */ | |
1190 | if (warn_overlength_strings == -1 || c_dialect_cxx ()) | |
1191 | warn_overlength_strings = 0; | |
1192 | ||
4003301d MLI |
1193 | /* Wmain is enabled by default in C++ but not in C. */ |
1194 | /* Wmain is disabled by default for -ffreestanding (!flag_hosted), | |
1195 | even if -Wall was given (warn_main will be 2 if set by -Wall, 1 | |
1196 | if set by -Wmain). */ | |
1197 | if (warn_main == -1) | |
1198 | warn_main = (c_dialect_cxx () && flag_hosted) ? 1 : 0; | |
1199 | else if (warn_main == 2) | |
1200 | warn_main = flag_hosted ? 1 : 0; | |
1201 | ||
7060db96 MLI |
1202 | /* In C, -Wconversion enables -Wsign-conversion (unless disabled |
1203 | through -Wno-sign-conversion). While in C++, | |
1204 | -Wsign-conversion needs to be requested explicitly. */ | |
1205 | if (warn_sign_conversion == -1) | |
1206 | warn_sign_conversion = (c_dialect_cxx ()) ? 0 : warn_conversion; | |
1207 | ||
6866c6e8 ILT |
1208 | /* In C, -Wall and -Wc++-compat enable -Wenum-compare, which we do |
1209 | in c_common_handle_option; if it has not yet been set, it is | |
1210 | disabled by default. In C++, it is enabled by default. */ | |
1211 | if (warn_enum_compare == -1) | |
1212 | warn_enum_compare = c_dialect_cxx () ? 1 : 0; | |
1213 | ||
bee6fa6d AN |
1214 | /* -Wpacked-bitfield-compat is on by default for the C languages. The |
1215 | warning is issued in stor-layout.c which is not part of the front-end so | |
1216 | we need to selectively turn it on here. */ | |
1217 | if (warn_packed_bitfield_compat == -1) | |
1218 | warn_packed_bitfield_compat = 1; | |
9b439fe1 | 1219 | |
0b6f2917 NB |
1220 | /* Special format checking options don't work without -Wformat; warn if |
1221 | they are used. */ | |
44c21c7f DD |
1222 | if (!warn_format) |
1223 | { | |
1224 | warning (OPT_Wformat_y2k, | |
1225 | "-Wformat-y2k ignored without -Wformat"); | |
1226 | warning (OPT_Wformat_extra_args, | |
1227 | "-Wformat-extra-args ignored without -Wformat"); | |
1228 | warning (OPT_Wformat_zero_length, | |
1229 | "-Wformat-zero-length ignored without -Wformat"); | |
1230 | warning (OPT_Wformat_nonliteral, | |
1231 | "-Wformat-nonliteral ignored without -Wformat"); | |
ca178f85 BK |
1232 | warning (OPT_Wformat_contains_nul, |
1233 | "-Wformat-contains-nul ignored without -Wformat"); | |
44c21c7f DD |
1234 | warning (OPT_Wformat_security, |
1235 | "-Wformat-security ignored without -Wformat"); | |
44c21c7f | 1236 | } |
0b6f2917 | 1237 | |
dc90f45b | 1238 | /* -Wimplicit-function-declaration is enabled by default for C99. */ |
b8698a0f | 1239 | if (warn_implicit_function_declaration == -1) |
dc90f45b | 1240 | warn_implicit_function_declaration = flag_isoc99; |
c7463669 | 1241 | |
beeffe36 DG |
1242 | /* If we're allowing C++0x constructs, don't warn about C++0x |
1243 | compatibility problems. */ | |
c1ae8be5 | 1244 | if (cxx_dialect == cxx0x) |
beeffe36 DG |
1245 | warn_cxx0x_compat = 0; |
1246 | ||
460bd0e3 NB |
1247 | if (flag_preprocess_only) |
1248 | { | |
63973df3 NB |
1249 | /* Open the output now. We must do so even if flag_no_output is |
1250 | on, because there may be other output than from the actual | |
1251 | preprocessing (e.g. from -dM). */ | |
1252 | if (out_fname[0] == '\0') | |
1253 | out_stream = stdout; | |
1254 | else | |
1255 | out_stream = fopen (out_fname, "w"); | |
1256 | ||
1257 | if (out_stream == NULL) | |
9d10c9a9 | 1258 | { |
fa6ef813 | 1259 | fatal_error ("opening output file %s: %m", out_fname); |
c366ade5 | 1260 | return false; |
9d10c9a9 | 1261 | } |
63973df3 | 1262 | |
d1bd0ded GK |
1263 | if (num_in_fnames > 1) |
1264 | error ("too many filenames given. Type %s --help for usage", | |
1265 | progname); | |
1266 | ||
9d10c9a9 | 1267 | init_pp_output (out_stream); |
460bd0e3 | 1268 | } |
9d10c9a9 NB |
1269 | else |
1270 | { | |
1271 | init_c_lex (); | |
460bd0e3 | 1272 | |
9d10c9a9 | 1273 | /* Yuk. WTF is this? I do know ObjC relies on it somewhere. */ |
3c20847b | 1274 | input_location = UNKNOWN_LOCATION; |
9d10c9a9 | 1275 | } |
63973df3 | 1276 | |
8e9ea4d7 PB |
1277 | cb = cpp_get_callbacks (parse_in); |
1278 | cb->file_change = cb_file_change; | |
1279 | cb->dir_change = cb_dir_change; | |
4169c321 | 1280 | cpp_post_options (parse_in); |
23345bbb | 1281 | |
3c20847b | 1282 | input_location = UNKNOWN_LOCATION; |
4bfec483 | 1283 | |
8e9ea4d7 PB |
1284 | *pfilename = this_input_filename |
1285 | = cpp_read_main_file (parse_in, in_fnames[0]); | |
540554f4 | 1286 | /* Don't do any compilation or preprocessing if there is no input file. */ |
8e9ea4d7 | 1287 | if (this_input_filename == NULL) |
540554f4 JW |
1288 | { |
1289 | errorcount++; | |
1290 | return false; | |
1291 | } | |
8e9ea4d7 | 1292 | |
8a4baa83 | 1293 | if (flag_working_directory |
3f75a254 | 1294 | && flag_preprocess_only && !flag_no_line_commands) |
8e9ea4d7 PB |
1295 | pp_dir_change (parse_in, get_src_pwd ()); |
1296 | ||
4bfec483 NB |
1297 | return flag_preprocess_only; |
1298 | } | |
1299 | ||
1300 | /* Front end initialization common to C, ObjC and C++. */ | |
1301 | bool | |
2f6e4e97 | 1302 | c_common_init (void) |
4bfec483 | 1303 | { |
4bfec483 NB |
1304 | /* Set up preprocessor arithmetic. Must be done after call to |
1305 | c_common_nodes_and_builtins for type nodes to be good. */ | |
1306 | cpp_opts->precision = TYPE_PRECISION (intmax_type_node); | |
1307 | cpp_opts->char_precision = TYPE_PRECISION (char_type_node); | |
1308 | cpp_opts->int_precision = TYPE_PRECISION (integer_type_node); | |
1309 | cpp_opts->wchar_precision = TYPE_PRECISION (wchar_type_node); | |
8df83eae | 1310 | cpp_opts->unsigned_wchar = TYPE_UNSIGNED (wchar_type_node); |
e6cc3a24 ZW |
1311 | cpp_opts->bytes_big_endian = BYTES_BIG_ENDIAN; |
1312 | ||
1313 | /* This can't happen until after wchar_precision and bytes_big_endian | |
1314 | are known. */ | |
1315 | cpp_init_iconv (parse_in); | |
460bd0e3 | 1316 | |
3fd30b88 GK |
1317 | if (version_flag) |
1318 | c_common_print_pch_checksum (stderr); | |
1319 | ||
a25a8f3b JJ |
1320 | /* Has to wait until now so that cpplib has its hash table. */ |
1321 | init_pragma (); | |
1322 | ||
9d10c9a9 NB |
1323 | if (flag_preprocess_only) |
1324 | { | |
8e9ea4d7 PB |
1325 | finish_options (); |
1326 | preprocess_file (parse_in); | |
4bfec483 | 1327 | return false; |
9d10c9a9 NB |
1328 | } |
1329 | ||
4bfec483 | 1330 | return true; |
76c3e73e NB |
1331 | } |
1332 | ||
d1bd0ded GK |
1333 | /* Initialize the integrated preprocessor after debug output has been |
1334 | initialized; loop over each input file. */ | |
23345bbb | 1335 | void |
f75fbaf7 | 1336 | c_common_parse_file (int set_yydebug) |
23345bbb | 1337 | { |
9affb2c7 ZW |
1338 | unsigned int i; |
1339 | ||
f75fbaf7 | 1340 | if (set_yydebug) |
566c6181 ZW |
1341 | switch (c_language) |
1342 | { | |
1343 | case clk_c: | |
1344 | warning(0, "The C parser does not support -dy, option ignored"); | |
1345 | break; | |
1346 | case clk_objc: | |
1347 | warning(0, | |
1348 | "The Objective-C parser does not support -dy, option ignored"); | |
1349 | break; | |
1350 | case clk_cxx: | |
1351 | warning(0, "The C++ parser does not support -dy, option ignored"); | |
1352 | break; | |
1353 | case clk_objcxx: | |
1354 | warning(0, | |
1355 | "The Objective-C++ parser does not support -dy, option ignored"); | |
1356 | break; | |
1357 | default: | |
1358 | gcc_unreachable (); | |
1359 | } | |
23345bbb | 1360 | |
9affb2c7 ZW |
1361 | i = 0; |
1362 | for (;;) | |
1363 | { | |
9e9945c5 DB |
1364 | /* Start the main input file, if the debug writer wants it. */ |
1365 | if (debug_hooks->start_end_main_source_file) | |
1366 | (*debug_hooks->start_source_file) (0, this_input_filename); | |
9affb2c7 ZW |
1367 | finish_options (); |
1368 | pch_init (); | |
1369 | push_file_scope (); | |
1370 | c_parse_file (); | |
1371 | finish_file (); | |
1372 | pop_file_scope (); | |
9e9945c5 DB |
1373 | /* And end the main input file, if the debug writer wants it */ |
1374 | if (debug_hooks->start_end_main_source_file) | |
1375 | (*debug_hooks->end_source_file) (0); | |
9affb2c7 ZW |
1376 | if (++i >= num_in_fnames) |
1377 | break; | |
1378 | cpp_undef_all (parse_in); | |
97f6bd40 | 1379 | cpp_clear_file_cache (parse_in); |
9affb2c7 ZW |
1380 | this_input_filename |
1381 | = cpp_read_main_file (parse_in, in_fnames[i]); | |
1382 | /* If an input file is missing, abandon further compilation. | |
c22cacf3 | 1383 | cpplib has issued a diagnostic. */ |
9affb2c7 ZW |
1384 | if (!this_input_filename) |
1385 | break; | |
1386 | } | |
23345bbb NB |
1387 | } |
1388 | ||
76c3e73e NB |
1389 | /* Common finish hook for the C, ObjC and C++ front ends. */ |
1390 | void | |
2f6e4e97 | 1391 | c_common_finish (void) |
76c3e73e NB |
1392 | { |
1393 | FILE *deps_stream = NULL; | |
1394 | ||
148e4216 JM |
1395 | /* Don't write the deps file if there are errors. */ |
1396 | if (cpp_opts->deps.style != DEPS_NONE && errorcount == 0) | |
76c3e73e NB |
1397 | { |
1398 | /* If -M or -MM was seen without -MF, default output to the | |
1399 | output stream. */ | |
f4ff5a69 | 1400 | if (!deps_file) |
76c3e73e NB |
1401 | deps_stream = out_stream; |
1402 | else | |
1403 | { | |
f4ff5a69 | 1404 | deps_stream = fopen (deps_file, deps_append ? "a": "w"); |
76c3e73e | 1405 | if (!deps_stream) |
fa6ef813 | 1406 | fatal_error ("opening dependency file %s: %m", deps_file); |
76c3e73e NB |
1407 | } |
1408 | } | |
1409 | ||
1410 | /* For performance, avoid tearing down cpplib's internal structures | |
1411 | with cpp_destroy (). */ | |
148e4216 | 1412 | cpp_finish (parse_in, deps_stream); |
76c3e73e NB |
1413 | |
1414 | if (deps_stream && deps_stream != out_stream | |
1415 | && (ferror (deps_stream) || fclose (deps_stream))) | |
fa6ef813 | 1416 | fatal_error ("closing dependency file %s: %m", deps_file); |
76c3e73e NB |
1417 | |
1418 | if (out_stream && (ferror (out_stream) || fclose (out_stream))) | |
fa6ef813 | 1419 | fatal_error ("when writing output to %s: %m", out_fname); |
76c3e73e NB |
1420 | } |
1421 | ||
76c3e73e NB |
1422 | /* Either of two environment variables can specify output of |
1423 | dependencies. Their value is either "OUTPUT_FILE" or "OUTPUT_FILE | |
1424 | DEPS_TARGET", where OUTPUT_FILE is the file to write deps info to | |
1425 | and DEPS_TARGET is the target to mention in the deps. They also | |
1426 | result in dependency information being appended to the output file | |
182d89a3 NB |
1427 | rather than overwriting it, and like Sun's compiler |
1428 | SUNPRO_DEPENDENCIES suppresses the dependency on the main file. */ | |
76c3e73e | 1429 | static void |
2f6e4e97 | 1430 | check_deps_environment_vars (void) |
76c3e73e NB |
1431 | { |
1432 | char *spec; | |
1433 | ||
1434 | GET_ENVIRONMENT (spec, "DEPENDENCIES_OUTPUT"); | |
1435 | if (spec) | |
f4ff5a69 | 1436 | cpp_opts->deps.style = DEPS_USER; |
76c3e73e NB |
1437 | else |
1438 | { | |
1439 | GET_ENVIRONMENT (spec, "SUNPRO_DEPENDENCIES"); | |
1440 | if (spec) | |
182d89a3 NB |
1441 | { |
1442 | cpp_opts->deps.style = DEPS_SYSTEM; | |
1443 | cpp_opts->deps.ignore_main_file = true; | |
1444 | } | |
76c3e73e NB |
1445 | } |
1446 | ||
1447 | if (spec) | |
1448 | { | |
1449 | /* Find the space before the DEPS_TARGET, if there is one. */ | |
1450 | char *s = strchr (spec, ' '); | |
1451 | if (s) | |
1452 | { | |
1453 | /* Let the caller perform MAKE quoting. */ | |
f4ff5a69 | 1454 | defer_opt (OPT_MT, s + 1); |
76c3e73e NB |
1455 | *s = '\0'; |
1456 | } | |
1457 | ||
1458 | /* Command line -MF overrides environment variables and default. */ | |
f4ff5a69 NB |
1459 | if (!deps_file) |
1460 | deps_file = spec; | |
76c3e73e | 1461 | |
f4ff5a69 | 1462 | deps_append = 1; |
1b3c8f46 | 1463 | deps_seen = true; |
f4ff5a69 NB |
1464 | } |
1465 | } | |
1466 | ||
1467 | /* Handle deferred command line switches. */ | |
1468 | static void | |
2f6e4e97 | 1469 | handle_deferred_opts (void) |
f4ff5a69 NB |
1470 | { |
1471 | size_t i; | |
c6e83800 ZW |
1472 | struct deps *deps; |
1473 | ||
1474 | /* Avoid allocating the deps buffer if we don't need it. | |
1475 | (This flag may be true without there having been -MT or -MQ | |
1476 | options, but we'll still need the deps buffer.) */ | |
1477 | if (!deps_seen) | |
1478 | return; | |
1479 | ||
1480 | deps = cpp_get_deps (parse_in); | |
f4ff5a69 NB |
1481 | |
1482 | for (i = 0; i < deferred_count; i++) | |
1483 | { | |
1484 | struct deferred_opt *opt = &deferred_opts[i]; | |
1485 | ||
c1bad961 | 1486 | if (opt->code == OPT_MT || opt->code == OPT_MQ) |
c6e83800 | 1487 | deps_add_target (deps, opt->arg, opt->code == OPT_MQ); |
f4ff5a69 | 1488 | } |
f4ff5a69 NB |
1489 | } |
1490 | ||
1491 | /* These settings are appropriate for GCC, but not necessarily so for | |
1492 | cpplib as a library. */ | |
1493 | static void | |
2f6e4e97 | 1494 | sanitize_cpp_opts (void) |
f4ff5a69 NB |
1495 | { |
1496 | /* If we don't know what style of dependencies to output, complain | |
1497 | if any other dependency switches have been given. */ | |
1498 | if (deps_seen && cpp_opts->deps.style == DEPS_NONE) | |
1499 | error ("to generate dependencies you must specify either -M or -MM"); | |
1500 | ||
1501 | /* -dM and dependencies suppress normal output; do it here so that | |
1502 | the last -d[MDN] switch overrides earlier ones. */ | |
63973df3 NB |
1503 | if (flag_dump_macros == 'M') |
1504 | flag_no_output = 1; | |
f4ff5a69 | 1505 | |
ccfc4c91 OW |
1506 | /* By default, -fdirectives-only implies -dD. This allows subsequent phases |
1507 | to perform proper macro expansion. */ | |
1508 | if (cpp_opts->directives_only && !cpp_opts->preprocessed && !flag_dump_macros) | |
1509 | flag_dump_macros = 'D'; | |
1510 | ||
f4ff5a69 NB |
1511 | /* Disable -dD, -dN and -dI if normal output is suppressed. Allow |
1512 | -dM since at least glibc relies on -M -dM to work. */ | |
6c6cfbfd | 1513 | /* Also, flag_no_output implies flag_no_line_commands, always. */ |
63973df3 | 1514 | if (flag_no_output) |
f4ff5a69 | 1515 | { |
63973df3 NB |
1516 | if (flag_dump_macros != 'M') |
1517 | flag_dump_macros = 0; | |
1518 | flag_dump_includes = 0; | |
f9c65623 | 1519 | flag_no_line_commands = 1; |
76c3e73e | 1520 | } |
4822e563 TT |
1521 | else if (cpp_opts->deps.missing_files) |
1522 | error ("-MG may only be used with -M or -MM"); | |
f4ff5a69 NB |
1523 | |
1524 | cpp_opts->unsigned_char = !flag_signed_char; | |
1525 | cpp_opts->stdc_0_in_system_headers = STDC_0_IN_SYSTEM_HEADERS; | |
1526 | ||
9c650d90 MLI |
1527 | /* Wlong-long is disabled by default. It is enabled by: |
1528 | [-pedantic | -Wtraditional] -std=[gnu|c]++98 ; or | |
b8698a0f | 1529 | [-pedantic | -Wtraditional] -std=non-c99 . |
9c650d90 MLI |
1530 | |
1531 | Either -Wlong-long or -Wno-long-long override any other settings. */ | |
1532 | if (warn_long_long == -1) | |
1533 | warn_long_long = ((pedantic || warn_traditional) | |
1534 | && (c_dialect_cxx () ? cxx_dialect == cxx98 : !flag_isoc99)); | |
1535 | cpp_opts->warn_long_long = warn_long_long; | |
b20d9f0c | 1536 | |
e5b79219 RH |
1537 | /* Similarly with -Wno-variadic-macros. No check for c99 here, since |
1538 | this also turns off warnings about GCCs extension. */ | |
1539 | cpp_opts->warn_variadic_macros | |
1540 | = warn_variadic_macros && (pedantic || warn_traditional); | |
1541 | ||
b20d9f0c AO |
1542 | /* If we're generating preprocessor output, emit current directory |
1543 | if explicitly requested or if debugging information is enabled. | |
1544 | ??? Maybe we should only do it for debugging formats that | |
1545 | actually output the current directory? */ | |
1546 | if (flag_working_directory == -1) | |
1547 | flag_working_directory = (debug_info_level != DINFO_LEVEL_NONE); | |
ccfc4c91 OW |
1548 | |
1549 | if (cpp_opts->directives_only) | |
1550 | { | |
1551 | if (warn_unused_macros) | |
1552 | error ("-fdirectives-only is incompatible with -Wunused_macros"); | |
1553 | if (cpp_opts->traditional) | |
1554 | error ("-fdirectives-only is incompatible with -traditional"); | |
1555 | } | |
f4ff5a69 NB |
1556 | } |
1557 | ||
5793b276 NB |
1558 | /* Add include path with a prefix at the front of its name. */ |
1559 | static void | |
2f6e4e97 | 1560 | add_prefixed_path (const char *suffix, size_t chain) |
5793b276 | 1561 | { |
52999738 | 1562 | char *path; |
5793b276 | 1563 | const char *prefix; |
52999738 | 1564 | size_t prefix_len, suffix_len; |
5793b276 | 1565 | |
52999738 ZW |
1566 | suffix_len = strlen (suffix); |
1567 | prefix = iprefix ? iprefix : cpp_GCC_INCLUDE_DIR; | |
1568 | prefix_len = iprefix ? strlen (iprefix) : cpp_GCC_INCLUDE_DIR_len; | |
1569 | ||
5d038c4c | 1570 | path = (char *) xmalloc (prefix_len + suffix_len + 1); |
52999738 ZW |
1571 | memcpy (path, prefix, prefix_len); |
1572 | memcpy (path + prefix_len, suffix, suffix_len); | |
1573 | path[prefix_len + suffix_len] = '\0'; | |
1574 | ||
b02398bd | 1575 | add_path (path, chain, 0, false); |
5793b276 NB |
1576 | } |
1577 | ||
8e9ea4d7 PB |
1578 | /* Handle -D, -U, -A, -imacros, and the first -include. */ |
1579 | static void | |
1580 | finish_options (void) | |
255c10b1 | 1581 | { |
255c10b1 NB |
1582 | if (!cpp_opts->preprocessed) |
1583 | { | |
c1bad961 NB |
1584 | size_t i; |
1585 | ||
1fb2fbeb | 1586 | cb_file_change (parse_in, |
5ffeb913 | 1587 | linemap_add (line_table, LC_RENAME, 0, |
1fb2fbeb PB |
1588 | _("<built-in>"), 0)); |
1589 | ||
6e270179 | 1590 | cpp_init_builtins (parse_in, flag_hosted); |
c1bad961 | 1591 | c_cpp_builtins (parse_in); |
78b8811a HPN |
1592 | |
1593 | /* We're about to send user input to cpplib, so make it warn for | |
1594 | things that we previously (when we sent it internal definitions) | |
1595 | told it to not warn. | |
1596 | ||
1597 | C99 permits implementation-defined characters in identifiers. | |
1598 | The documented meaning of -std= is to turn off extensions that | |
1599 | conflict with the specified standard, and since a strictly | |
1600 | conforming program cannot contain a '$', we do not condition | |
1601 | their acceptance on the -std= setting. */ | |
1602 | cpp_opts->warn_dollars = (cpp_opts->pedantic && !cpp_opts->c99); | |
1603 | ||
112598f4 | 1604 | cb_file_change (parse_in, |
5ffeb913 | 1605 | linemap_add (line_table, LC_RENAME, 0, |
112598f4 PB |
1606 | _("<command-line>"), 0)); |
1607 | ||
c1bad961 NB |
1608 | for (i = 0; i < deferred_count; i++) |
1609 | { | |
1610 | struct deferred_opt *opt = &deferred_opts[i]; | |
1611 | ||
1612 | if (opt->code == OPT_D) | |
1613 | cpp_define (parse_in, opt->arg); | |
1614 | else if (opt->code == OPT_U) | |
1615 | cpp_undef (parse_in, opt->arg); | |
1616 | else if (opt->code == OPT_A) | |
1617 | { | |
1618 | if (opt->arg[0] == '-') | |
1619 | cpp_unassert (parse_in, opt->arg + 1); | |
1620 | else | |
1621 | cpp_assert (parse_in, opt->arg); | |
1622 | } | |
1623 | } | |
255c10b1 | 1624 | |
c1bad961 | 1625 | /* Handle -imacros after -D and -U. */ |
255c10b1 NB |
1626 | for (i = 0; i < deferred_count; i++) |
1627 | { | |
1628 | struct deferred_opt *opt = &deferred_opts[i]; | |
1629 | ||
1630 | if (opt->code == OPT_imacros | |
1631 | && cpp_push_include (parse_in, opt->arg)) | |
9b49a0aa | 1632 | { |
6614fd40 | 1633 | /* Disable push_command_line_include callback for now. */ |
9b49a0aa PB |
1634 | include_cursor = deferred_count + 1; |
1635 | cpp_scan_nooutput (parse_in); | |
1636 | } | |
255c10b1 NB |
1637 | } |
1638 | } | |
ccfc4c91 OW |
1639 | else if (cpp_opts->directives_only) |
1640 | cpp_init_special_builtins (parse_in); | |
255c10b1 | 1641 | |
e6ebd07b | 1642 | include_cursor = 0; |
255c10b1 NB |
1643 | push_command_line_include (); |
1644 | } | |
1645 | ||
23345bbb NB |
1646 | /* Give CPP the next file given by -include, if any. */ |
1647 | static void | |
2f6e4e97 | 1648 | push_command_line_include (void) |
23345bbb | 1649 | { |
23345bbb NB |
1650 | while (include_cursor < deferred_count) |
1651 | { | |
1652 | struct deferred_opt *opt = &deferred_opts[include_cursor++]; | |
2f6e4e97 | 1653 | |
3f75a254 | 1654 | if (!cpp_opts->preprocessed && opt->code == OPT_include |
31703a61 | 1655 | && cpp_push_include (parse_in, opt->arg)) |
23345bbb NB |
1656 | return; |
1657 | } | |
1658 | ||
1659 | if (include_cursor == deferred_count) | |
1660 | { | |
31703a61 | 1661 | include_cursor++; |
23345bbb NB |
1662 | /* -Wunused-macros should only warn about macros defined hereafter. */ |
1663 | cpp_opts->warn_unused_macros = warn_unused_macros; | |
8e9ea4d7 | 1664 | /* Restore the line map from <command line>. */ |
3f75a254 | 1665 | if (!cpp_opts->preprocessed) |
3e6da82b | 1666 | cpp_change_file (parse_in, LC_RENAME, this_input_filename); |
8e9ea4d7 PB |
1667 | |
1668 | /* Set this here so the client can change the option if it wishes, | |
1669 | and after stacking the main file so we don't trace the main file. */ | |
5ffeb913 | 1670 | line_table->trace_includes = cpp_opts->print_include_names; |
23345bbb NB |
1671 | } |
1672 | } | |
1673 | ||
1674 | /* File change callback. Has to handle -include files. */ | |
1675 | static void | |
e18476eb | 1676 | cb_file_change (cpp_reader * ARG_UNUSED (pfile), |
2f6e4e97 | 1677 | const struct line_map *new_map) |
23345bbb NB |
1678 | { |
1679 | if (flag_preprocess_only) | |
1680 | pp_file_change (new_map); | |
1681 | else | |
1682 | fe_file_change (new_map); | |
1683 | ||
31703a61 | 1684 | if (new_map == 0 || (new_map->reason == LC_LEAVE && MAIN_FILE_P (new_map))) |
23345bbb NB |
1685 | push_command_line_include (); |
1686 | } | |
1687 | ||
8e9ea4d7 | 1688 | void |
e18476eb | 1689 | cb_dir_change (cpp_reader * ARG_UNUSED (pfile), const char *dir) |
8e9ea4d7 | 1690 | { |
3f75a254 | 1691 | if (!set_src_pwd (dir)) |
d4ee4d25 | 1692 | warning (0, "too late for # directive to set debug directory"); |
8e9ea4d7 PB |
1693 | } |
1694 | ||
f4ff5a69 NB |
1695 | /* Set the C 89 standard (with 1994 amendments if C94, without GNU |
1696 | extensions if ISO). There is no concept of gnu94. */ | |
1697 | static void | |
2f6e4e97 | 1698 | set_std_c89 (int c94, int iso) |
f4ff5a69 NB |
1699 | { |
1700 | cpp_set_lang (parse_in, c94 ? CLK_STDC94: iso ? CLK_STDC89: CLK_GNUC89); | |
1701 | flag_iso = iso; | |
1702 | flag_no_asm = iso; | |
1703 | flag_no_gnu_keywords = iso; | |
1704 | flag_no_nonansi_builtin = iso; | |
f4ff5a69 NB |
1705 | flag_isoc94 = c94; |
1706 | flag_isoc99 = 0; | |
76c3e73e NB |
1707 | } |
1708 | ||
b4a93904 NB |
1709 | /* Set the C 99 standard (without GNU extensions if ISO). */ |
1710 | static void | |
2f6e4e97 | 1711 | set_std_c99 (int iso) |
b4a93904 NB |
1712 | { |
1713 | cpp_set_lang (parse_in, iso ? CLK_STDC99: CLK_GNUC99); | |
1714 | flag_no_asm = iso; | |
1715 | flag_no_nonansi_builtin = iso; | |
b4a93904 NB |
1716 | flag_iso = iso; |
1717 | flag_isoc99 = 1; | |
1718 | flag_isoc94 = 1; | |
b4a93904 NB |
1719 | } |
1720 | ||
f749a36b NB |
1721 | /* Set the C++ 98 standard (without GNU extensions if ISO). */ |
1722 | static void | |
2f6e4e97 | 1723 | set_std_cxx98 (int iso) |
f749a36b NB |
1724 | { |
1725 | cpp_set_lang (parse_in, iso ? CLK_CXX98: CLK_GNUCXX); | |
1726 | flag_no_gnu_keywords = iso; | |
1727 | flag_no_nonansi_builtin = iso; | |
f749a36b | 1728 | flag_iso = iso; |
c1ae8be5 | 1729 | cxx_dialect = cxx98; |
f749a36b NB |
1730 | } |
1731 | ||
966541e3 DG |
1732 | /* Set the C++ 0x working draft "standard" (without GNU extensions if ISO). */ |
1733 | static void | |
1734 | set_std_cxx0x (int iso) | |
1735 | { | |
1736 | cpp_set_lang (parse_in, iso ? CLK_CXX0X: CLK_GNUCXX0X); | |
1737 | flag_no_gnu_keywords = iso; | |
1738 | flag_no_nonansi_builtin = iso; | |
1739 | flag_iso = iso; | |
c1ae8be5 | 1740 | cxx_dialect = cxx0x; |
966541e3 DG |
1741 | } |
1742 | ||
0b6f2917 NB |
1743 | /* Handle setting implicit to ON. */ |
1744 | static void | |
2f6e4e97 | 1745 | set_Wimplicit (int on) |
0b6f2917 NB |
1746 | { |
1747 | warn_implicit = on; | |
1748 | warn_implicit_int = on; | |
dc90f45b | 1749 | warn_implicit_function_declaration = on; |
0b6f2917 NB |
1750 | } |
1751 | ||
4b7091eb | 1752 | /* Args to -d specify what to dump. Silently ignore |
05713b80 | 1753 | unrecognized options; they may be aimed at toplev.c. */ |
0b6f2917 | 1754 | static void |
2f6e4e97 | 1755 | handle_OPT_d (const char *arg) |
0b6f2917 | 1756 | { |
4b7091eb NB |
1757 | char c; |
1758 | ||
1759 | while ((c = *arg++) != '\0') | |
1760 | switch (c) | |
1761 | { | |
63973df3 NB |
1762 | case 'M': /* Dump macros only. */ |
1763 | case 'N': /* Dump names. */ | |
1764 | case 'D': /* Dump definitions. */ | |
93d45d9e | 1765 | case 'U': /* Dump used macros. */ |
63973df3 | 1766 | flag_dump_macros = c; |
4b7091eb NB |
1767 | break; |
1768 | ||
1769 | case 'I': | |
63973df3 | 1770 | flag_dump_includes = 1; |
4b7091eb NB |
1771 | break; |
1772 | } | |
0b6f2917 | 1773 | } |