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Commit | Line | Data |
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0b6f2917 | 1 | /* C/ObjC/C++ command line option handling. |
d9221e01 | 2 | Copyright (C) 2002, 2003, 2004 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 | |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
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" |
5793b276 | 40 | |
b1822ccc NB |
41 | #ifndef DOLLARS_IN_IDENTIFIERS |
42 | # define DOLLARS_IN_IDENTIFIERS true | |
43 | #endif | |
44 | ||
5793b276 NB |
45 | #ifndef TARGET_SYSTEM_ROOT |
46 | # define TARGET_SYSTEM_ROOT NULL | |
47 | #endif | |
0b6f2917 | 48 | |
7cd60054 AM |
49 | #ifndef TARGET_OPTF |
50 | #define TARGET_OPTF(ARG) | |
51 | #endif | |
52 | ||
4bfec483 NB |
53 | static int saved_lineno; |
54 | ||
f4ff5a69 | 55 | /* CPP's options. */ |
18bdccaa NB |
56 | static cpp_options *cpp_opts; |
57 | ||
460bd0e3 | 58 | /* Input filename. */ |
89e9faee | 59 | static const char *this_input_filename; |
460bd0e3 | 60 | |
76c3e73e NB |
61 | /* Filename and stream for preprocessed output. */ |
62 | static const char *out_fname; | |
63 | static FILE *out_stream; | |
64 | ||
65 | /* Append dependencies to deps_file. */ | |
66 | static bool deps_append; | |
67 | ||
f4ff5a69 NB |
68 | /* If dependency switches (-MF etc.) have been given. */ |
69 | static bool deps_seen; | |
70 | ||
5793b276 NB |
71 | /* If -v seen. */ |
72 | static bool verbose; | |
73 | ||
f4ff5a69 NB |
74 | /* Dependency output file. */ |
75 | static const char *deps_file; | |
76 | ||
5793b276 NB |
77 | /* The prefix given by -iprefix, if any. */ |
78 | static const char *iprefix; | |
79 | ||
80 | /* The system root, if any. Overridden by -isysroot. */ | |
81 | static const char *sysroot = TARGET_SYSTEM_ROOT; | |
82 | ||
83 | /* Zero disables all standard directories for headers. */ | |
84 | static bool std_inc = true; | |
85 | ||
86 | /* Zero disables the C++-specific standard directories for headers. */ | |
87 | static bool std_cxx_inc = true; | |
88 | ||
89 | /* If the quote chain has been split by -I-. */ | |
90 | static bool quote_chain_split; | |
91 | ||
23345bbb NB |
92 | /* If -Wunused-macros. */ |
93 | static bool warn_unused_macros; | |
94 | ||
e5b79219 RH |
95 | /* If -Wvariadic-macros. */ |
96 | static bool warn_variadic_macros = true; | |
97 | ||
b86f6cd9 NB |
98 | /* Number of deferred options. */ |
99 | static size_t deferred_count; | |
f4ff5a69 | 100 | |
23345bbb NB |
101 | /* Number of deferred options scanned for -include. */ |
102 | static size_t include_cursor; | |
103 | ||
33de9573 NB |
104 | /* Permit Fotran front-end options. */ |
105 | static bool permit_fortran_options; | |
106 | ||
2f6e4e97 | 107 | static void set_Wimplicit (int); |
2f6e4e97 AJ |
108 | static void handle_OPT_d (const char *); |
109 | static void set_std_cxx98 (int); | |
110 | static void set_std_c89 (int, int); | |
111 | static void set_std_c99 (int); | |
112 | static void check_deps_environment_vars (void); | |
113 | static void handle_deferred_opts (void); | |
114 | static void sanitize_cpp_opts (void); | |
115 | static void add_prefixed_path (const char *, size_t); | |
116 | static void push_command_line_include (void); | |
117 | static void cb_file_change (cpp_reader *, const struct line_map *); | |
8e9ea4d7 PB |
118 | static void cb_dir_change (cpp_reader *, const char *); |
119 | static void finish_options (void); | |
460bd0e3 NB |
120 | |
121 | #ifndef STDC_0_IN_SYSTEM_HEADERS | |
122 | #define STDC_0_IN_SYSTEM_HEADERS 0 | |
123 | #endif | |
0b6f2917 | 124 | |
2772ef3e | 125 | /* Holds switches parsed by c_common_handle_option (), but whose |
95bd1dd7 | 126 | handling is deferred to c_common_post_options (). */ |
2f6e4e97 | 127 | static void defer_opt (enum opt_code, const char *); |
f4ff5a69 NB |
128 | static struct deferred_opt |
129 | { | |
130 | enum opt_code code; | |
131 | const char *arg; | |
132 | } *deferred_opts; | |
133 | ||
cb66e385 NB |
134 | /* Complain that switch CODE expects an argument but none was |
135 | provided. OPT was the command-line option. Return FALSE to get | |
136 | the default message in opts.c, TRUE if we provide a specialized | |
137 | one. */ | |
138 | bool | |
139 | c_common_missing_argument (const char *opt, size_t code) | |
4b7091eb | 140 | { |
2772ef3e | 141 | switch (code) |
4b7091eb | 142 | { |
4b7091eb | 143 | default: |
cb66e385 NB |
144 | /* Pick up the default message. */ |
145 | return false; | |
4b7091eb | 146 | |
fef3106c | 147 | case OPT_fconstant_string_class_: |
cb66e385 | 148 | error ("no class name specified with \"%s\"", opt); |
4b7091eb | 149 | break; |
b4a93904 | 150 | |
c1bad961 | 151 | case OPT_A: |
cb66e385 | 152 | error ("assertion missing after \"%s\"", opt); |
c1bad961 NB |
153 | break; |
154 | ||
155 | case OPT_D: | |
156 | case OPT_U: | |
cb66e385 | 157 | error ("macro name missing after \"%s\"", opt); |
c1bad961 NB |
158 | break; |
159 | ||
94d1613b | 160 | case OPT_F: |
5793b276 NB |
161 | case OPT_I: |
162 | case OPT_idirafter: | |
163 | case OPT_isysroot: | |
164 | case OPT_isystem: | |
cb66e385 | 165 | error ("missing path after \"%s\"", opt); |
5793b276 NB |
166 | break; |
167 | ||
f4ff5a69 NB |
168 | case OPT_MF: |
169 | case OPT_MD: | |
170 | case OPT_MMD: | |
255c10b1 NB |
171 | case OPT_include: |
172 | case OPT_imacros: | |
b4a93904 | 173 | case OPT_o: |
cb66e385 | 174 | error ("missing filename after \"%s\"", opt); |
f4ff5a69 NB |
175 | break; |
176 | ||
177 | case OPT_MQ: | |
178 | case OPT_MT: | |
cb66e385 | 179 | error ("missing makefile target after \"%s\"", opt); |
b4a93904 | 180 | break; |
4b7091eb | 181 | } |
cb66e385 NB |
182 | |
183 | return true; | |
4b7091eb NB |
184 | } |
185 | ||
f4ff5a69 NB |
186 | /* Defer option CODE with argument ARG. */ |
187 | static void | |
2f6e4e97 | 188 | defer_opt (enum opt_code code, const char *arg) |
f4ff5a69 | 189 | { |
f4ff5a69 NB |
190 | deferred_opts[deferred_count].code = code; |
191 | deferred_opts[deferred_count].arg = arg; | |
192 | deferred_count++; | |
193 | } | |
194 | ||
0b6f2917 | 195 | /* Common initialization before parsing options. */ |
b86f6cd9 NB |
196 | unsigned int |
197 | c_common_init_options (unsigned int argc, const char **argv ATTRIBUTE_UNUSED) | |
0b6f2917 | 198 | { |
b86f6cd9 | 199 | static const unsigned int lang_flags[] = {CL_C, CL_ObjC, CL_CXX, CL_ObjCXX}; |
33de9573 | 200 | unsigned int result; |
37fa72e9 NB |
201 | |
202 | /* This is conditionalized only because that is the way the front | |
203 | ends used to do it. Maybe this should be unconditional? */ | |
204 | if (c_dialect_cxx ()) | |
205 | { | |
206 | /* By default wrap lines at 80 characters. Is getenv | |
207 | ("COLUMNS") preferable? */ | |
208 | diagnostic_line_cutoff (global_dc) = 80; | |
209 | /* By default, emit location information once for every | |
210 | diagnostic message. */ | |
211 | diagnostic_prefixing_rule (global_dc) = DIAGNOSTICS_SHOW_PREFIX_ONCE; | |
212 | } | |
213 | ||
214 | parse_in = cpp_create_reader (c_dialect_cxx () ? CLK_GNUCXX: CLK_GNUC89, | |
50f59cd7 | 215 | ident_hash, &line_table); |
37fa72e9 | 216 | |
18bdccaa | 217 | cpp_opts = cpp_get_options (parse_in); |
b1822ccc | 218 | cpp_opts->dollars_in_ident = DOLLARS_IN_IDENTIFIERS; |
37fa72e9 | 219 | cpp_opts->objc = c_dialect_objc (); |
78b8811a HPN |
220 | |
221 | /* Reset to avoid warnings on internal definitions. We set it just | |
222 | before passing on command-line options to cpplib. */ | |
223 | cpp_opts->warn_dollars = 0; | |
224 | ||
37fa72e9 NB |
225 | flag_const_strings = c_dialect_cxx (); |
226 | flag_exceptions = c_dialect_cxx (); | |
227 | warn_pointer_arith = c_dialect_cxx (); | |
2772ef3e | 228 | |
703ad42b | 229 | deferred_opts = xmalloc (argc * sizeof (struct deferred_opt)); |
b86f6cd9 | 230 | |
33de9573 NB |
231 | result = lang_flags[c_language]; |
232 | ||
233 | /* If potentially preprocessing Fortran we have to accept its front | |
234 | end options since the driver passes most of them through. */ | |
235 | #ifdef CL_F77 | |
236 | if (c_language == clk_c && argc > 2 | |
237 | && !strcmp (argv[2], "-traditional-cpp" )) | |
238 | { | |
239 | permit_fortran_options = true; | |
240 | result |= CL_F77; | |
241 | } | |
242 | #endif | |
243 | ||
244 | return result; | |
0b6f2917 NB |
245 | } |
246 | ||
b20d9f0c | 247 | /* Handle switch SCODE with argument ARG. VALUE is true, unless no- |
2772ef3e NB |
248 | form of an -f or -W option was given. Returns 0 if the switch was |
249 | invalid, a negative number to prevent language-independent | |
250 | processing in toplev.c (a hack necessary for the short-term). */ | |
0b6f2917 | 251 | int |
7b086b11 | 252 | c_common_handle_option (size_t scode, const char *arg, int value) |
0b6f2917 | 253 | { |
2772ef3e NB |
254 | const struct cl_option *option = &cl_options[scode]; |
255 | enum opt_code code = (enum opt_code) scode; | |
f18754d6 | 256 | int result = 1; |
2772ef3e | 257 | |
fef3106c | 258 | switch (code) |
0b6f2917 | 259 | { |
2772ef3e | 260 | default: |
33de9573 NB |
261 | result = permit_fortran_options; |
262 | break; | |
0b6f2917 | 263 | |
fef3106c | 264 | case OPT__output_pch_: |
17211ab5 GK |
265 | pch_file = arg; |
266 | break; | |
267 | ||
c1bad961 NB |
268 | case OPT_A: |
269 | defer_opt (code, arg); | |
270 | break; | |
271 | ||
4b7091eb NB |
272 | case OPT_C: |
273 | cpp_opts->discard_comments = 0; | |
274 | break; | |
275 | ||
276 | case OPT_CC: | |
277 | cpp_opts->discard_comments = 0; | |
278 | cpp_opts->discard_comments_in_macro_exp = 0; | |
279 | break; | |
280 | ||
c1bad961 NB |
281 | case OPT_D: |
282 | defer_opt (code, arg); | |
283 | break; | |
284 | ||
0b6f2917 NB |
285 | case OPT_E: |
286 | flag_preprocess_only = 1; | |
287 | break; | |
288 | ||
4b7091eb NB |
289 | case OPT_H: |
290 | cpp_opts->print_include_names = 1; | |
291 | break; | |
292 | ||
94d1613b MS |
293 | case OPT_F: |
294 | TARGET_OPTF (xstrdup (arg)); | |
295 | break; | |
296 | ||
5793b276 NB |
297 | case OPT_I: |
298 | if (strcmp (arg, "-")) | |
299 | add_path (xstrdup (arg), BRACKET, 0); | |
300 | else | |
301 | { | |
302 | if (quote_chain_split) | |
303 | error ("-I- specified twice"); | |
304 | quote_chain_split = true; | |
305 | split_quote_chain (); | |
306 | } | |
307 | break; | |
308 | ||
f4ff5a69 NB |
309 | case OPT_M: |
310 | case OPT_MM: | |
311 | /* When doing dependencies with -M or -MM, suppress normal | |
312 | preprocessed output, but still do -dM etc. as software | |
313 | depends on this. Preprocessed output does occur if -MD, -MMD | |
314 | or environment var dependency generation is used. */ | |
315 | cpp_opts->deps.style = (code == OPT_M ? DEPS_SYSTEM: DEPS_USER); | |
63973df3 | 316 | flag_no_output = 1; |
f4ff5a69 NB |
317 | cpp_opts->inhibit_warnings = 1; |
318 | break; | |
319 | ||
320 | case OPT_MD: | |
321 | case OPT_MMD: | |
322 | cpp_opts->deps.style = (code == OPT_MD ? DEPS_SYSTEM: DEPS_USER); | |
323 | deps_file = arg; | |
324 | break; | |
325 | ||
326 | case OPT_MF: | |
327 | deps_seen = true; | |
328 | deps_file = arg; | |
329 | break; | |
330 | ||
331 | case OPT_MG: | |
332 | deps_seen = true; | |
333 | cpp_opts->deps.missing_files = true; | |
334 | break; | |
335 | ||
336 | case OPT_MP: | |
337 | deps_seen = true; | |
338 | cpp_opts->deps.phony_targets = true; | |
339 | break; | |
340 | ||
341 | case OPT_MQ: | |
342 | case OPT_MT: | |
343 | deps_seen = true; | |
344 | defer_opt (code, arg); | |
345 | break; | |
346 | ||
4b7091eb | 347 | case OPT_P: |
63973df3 | 348 | flag_no_line_commands = 1; |
4b7091eb NB |
349 | break; |
350 | ||
b20d9f0c AO |
351 | case OPT_fworking_directory: |
352 | flag_working_directory = value; | |
353 | break; | |
354 | ||
c1bad961 NB |
355 | case OPT_U: |
356 | defer_opt (code, arg); | |
357 | break; | |
358 | ||
eca7f13c | 359 | case OPT_Wabi: |
7b086b11 | 360 | warn_abi = value; |
eca7f13c MM |
361 | break; |
362 | ||
0b6f2917 | 363 | case OPT_Wall: |
7b086b11 NB |
364 | set_Wunused (value); |
365 | set_Wformat (value); | |
366 | set_Wimplicit (value); | |
367 | warn_char_subscripts = value; | |
368 | warn_missing_braces = value; | |
369 | warn_parentheses = value; | |
370 | warn_return_type = value; | |
371 | warn_sequence_point = value; /* Was C only. */ | |
37fa72e9 | 372 | if (c_dialect_cxx ()) |
7b086b11 NB |
373 | warn_sign_compare = value; |
374 | warn_switch = value; | |
375 | warn_strict_aliasing = value; | |
2f6e4e97 | 376 | |
0b6f2917 | 377 | /* Only warn about unknown pragmas that are not in system |
2f6e4e97 | 378 | headers. */ |
7b086b11 | 379 | warn_unknown_pragmas = value; |
0b6f2917 NB |
380 | |
381 | /* We save the value of warn_uninitialized, since if they put | |
382 | -Wuninitialized on the command line, we need to generate a | |
383 | warning about not using it without also specifying -O. */ | |
384 | if (warn_uninitialized != 1) | |
7b086b11 | 385 | warn_uninitialized = (value ? 2 : 0); |
0b6f2917 | 386 | |
37fa72e9 | 387 | if (!c_dialect_cxx ()) |
0b6f2917 NB |
388 | /* We set this to 2 here, but 1 in -Wmain, so -ffreestanding |
389 | can turn it off only if it's not explicit. */ | |
7b086b11 | 390 | warn_main = value * 2; |
0b6f2917 NB |
391 | else |
392 | { | |
393 | /* C++-specific warnings. */ | |
7b086b11 NB |
394 | warn_nonvdtor = value; |
395 | warn_reorder = value; | |
396 | warn_nontemplate_friend = value; | |
0b6f2917 | 397 | } |
18bdccaa | 398 | |
7b086b11 NB |
399 | cpp_opts->warn_trigraphs = value; |
400 | cpp_opts->warn_comments = value; | |
401 | cpp_opts->warn_num_sign_change = value; | |
402 | cpp_opts->warn_multichar = value; /* Was C++ only. */ | |
0b6f2917 NB |
403 | break; |
404 | ||
405 | case OPT_Wbad_function_cast: | |
7b086b11 | 406 | warn_bad_function_cast = value; |
0b6f2917 NB |
407 | break; |
408 | ||
409 | case OPT_Wcast_qual: | |
7b086b11 | 410 | warn_cast_qual = value; |
0b6f2917 NB |
411 | break; |
412 | ||
413 | case OPT_Wchar_subscripts: | |
7b086b11 | 414 | warn_char_subscripts = value; |
0b6f2917 NB |
415 | break; |
416 | ||
18bdccaa NB |
417 | case OPT_Wcomment: |
418 | case OPT_Wcomments: | |
7b086b11 | 419 | cpp_opts->warn_comments = value; |
18bdccaa NB |
420 | break; |
421 | ||
0b6f2917 | 422 | case OPT_Wconversion: |
7b086b11 | 423 | warn_conversion = value; |
0b6f2917 NB |
424 | break; |
425 | ||
426 | case OPT_Wctor_dtor_privacy: | |
7b086b11 | 427 | warn_ctor_dtor_privacy = value; |
0b6f2917 NB |
428 | break; |
429 | ||
85617eba HPN |
430 | case OPT_Wdeclaration_after_statement: |
431 | warn_declaration_after_statement = value; | |
432 | break; | |
433 | ||
0b6f2917 | 434 | case OPT_Wdeprecated: |
7b086b11 NB |
435 | warn_deprecated = value; |
436 | cpp_opts->warn_deprecated = value; | |
0b6f2917 NB |
437 | break; |
438 | ||
439 | case OPT_Wdiv_by_zero: | |
7b086b11 | 440 | warn_div_by_zero = value; |
0b6f2917 NB |
441 | break; |
442 | ||
fef3106c | 443 | case OPT_Weffc__: |
7b086b11 | 444 | warn_ecpp = value; |
0b6f2917 NB |
445 | break; |
446 | ||
18bdccaa | 447 | case OPT_Wendif_labels: |
7b086b11 | 448 | cpp_opts->warn_endif_labels = value; |
18bdccaa NB |
449 | break; |
450 | ||
451 | case OPT_Werror: | |
7b086b11 | 452 | cpp_opts->warnings_are_errors = value; |
18bdccaa NB |
453 | break; |
454 | ||
fef3106c | 455 | case OPT_Werror_implicit_function_declaration: |
c83857ff | 456 | mesg_implicit_function_declaration = 2; |
0b6f2917 NB |
457 | break; |
458 | ||
459 | case OPT_Wfloat_equal: | |
7b086b11 | 460 | warn_float_equal = value; |
0b6f2917 NB |
461 | break; |
462 | ||
463 | case OPT_Wformat: | |
7b086b11 | 464 | set_Wformat (value); |
0b6f2917 NB |
465 | break; |
466 | ||
fef3106c | 467 | case OPT_Wformat_: |
0b6f2917 NB |
468 | set_Wformat (atoi (arg)); |
469 | break; | |
470 | ||
471 | case OPT_Wformat_extra_args: | |
7b086b11 | 472 | warn_format_extra_args = value; |
0b6f2917 NB |
473 | break; |
474 | ||
475 | case OPT_Wformat_nonliteral: | |
7b086b11 | 476 | warn_format_nonliteral = value; |
0b6f2917 NB |
477 | break; |
478 | ||
479 | case OPT_Wformat_security: | |
7b086b11 | 480 | warn_format_security = value; |
0b6f2917 NB |
481 | break; |
482 | ||
483 | case OPT_Wformat_y2k: | |
7b086b11 | 484 | warn_format_y2k = value; |
0b6f2917 NB |
485 | break; |
486 | ||
487 | case OPT_Wformat_zero_length: | |
7b086b11 | 488 | warn_format_zero_length = value; |
0b6f2917 NB |
489 | break; |
490 | ||
3390f9c9 AP |
491 | case OPT_Winit_self: |
492 | warn_init_self = value; | |
493 | break; | |
494 | ||
0b6f2917 | 495 | case OPT_Wimplicit: |
7b086b11 | 496 | set_Wimplicit (value); |
0b6f2917 NB |
497 | break; |
498 | ||
fef3106c | 499 | case OPT_Wimplicit_function_declaration: |
7b086b11 | 500 | mesg_implicit_function_declaration = value; |
0b6f2917 NB |
501 | break; |
502 | ||
503 | case OPT_Wimplicit_int: | |
7b086b11 | 504 | warn_implicit_int = value; |
0b6f2917 NB |
505 | break; |
506 | ||
18bdccaa | 507 | case OPT_Wimport: |
bf42e45b | 508 | /* Silently ignore for now. */ |
18bdccaa NB |
509 | break; |
510 | ||
a01fff59 | 511 | case OPT_Winvalid_offsetof: |
7b086b11 | 512 | warn_invalid_offsetof = value; |
a01fff59 MA |
513 | break; |
514 | ||
17211ab5 | 515 | case OPT_Winvalid_pch: |
7b086b11 | 516 | cpp_opts->warn_invalid_pch = value; |
17211ab5 GK |
517 | break; |
518 | ||
0b6f2917 | 519 | case OPT_Wlong_long: |
7b086b11 | 520 | warn_long_long = value; |
0b6f2917 NB |
521 | break; |
522 | ||
523 | case OPT_Wmain: | |
7b086b11 | 524 | if (value) |
0b6f2917 NB |
525 | warn_main = 1; |
526 | else | |
527 | warn_main = -1; | |
528 | break; | |
529 | ||
530 | case OPT_Wmissing_braces: | |
7b086b11 | 531 | warn_missing_braces = value; |
0b6f2917 NB |
532 | break; |
533 | ||
534 | case OPT_Wmissing_declarations: | |
7b086b11 | 535 | warn_missing_declarations = value; |
0b6f2917 NB |
536 | break; |
537 | ||
538 | case OPT_Wmissing_format_attribute: | |
7b086b11 | 539 | warn_missing_format_attribute = value; |
0b6f2917 NB |
540 | break; |
541 | ||
542 | case OPT_Wmissing_prototypes: | |
7b086b11 | 543 | warn_missing_prototypes = value; |
0b6f2917 NB |
544 | break; |
545 | ||
546 | case OPT_Wmultichar: | |
7b086b11 | 547 | cpp_opts->warn_multichar = value; |
0b6f2917 NB |
548 | break; |
549 | ||
550 | case OPT_Wnested_externs: | |
7b086b11 | 551 | warn_nested_externs = value; |
0b6f2917 NB |
552 | break; |
553 | ||
554 | case OPT_Wnon_template_friend: | |
7b086b11 | 555 | warn_nontemplate_friend = value; |
0b6f2917 NB |
556 | break; |
557 | ||
558 | case OPT_Wnon_virtual_dtor: | |
7b086b11 | 559 | warn_nonvdtor = value; |
0b6f2917 NB |
560 | break; |
561 | ||
562 | case OPT_Wnonnull: | |
7b086b11 | 563 | warn_nonnull = value; |
0b6f2917 NB |
564 | break; |
565 | ||
c034f121 AJ |
566 | case OPT_Wold_style_definition: |
567 | warn_old_style_definition = value; | |
568 | break; | |
569 | ||
0b6f2917 | 570 | case OPT_Wold_style_cast: |
7b086b11 | 571 | warn_old_style_cast = value; |
0b6f2917 NB |
572 | break; |
573 | ||
574 | case OPT_Woverloaded_virtual: | |
7b086b11 | 575 | warn_overloaded_virtual = value; |
0b6f2917 NB |
576 | break; |
577 | ||
578 | case OPT_Wparentheses: | |
7b086b11 | 579 | warn_parentheses = value; |
0b6f2917 NB |
580 | break; |
581 | ||
582 | case OPT_Wpmf_conversions: | |
7b086b11 | 583 | warn_pmf2ptr = value; |
0b6f2917 NB |
584 | break; |
585 | ||
586 | case OPT_Wpointer_arith: | |
7b086b11 | 587 | warn_pointer_arith = value; |
0b6f2917 NB |
588 | break; |
589 | ||
590 | case OPT_Wprotocol: | |
7b086b11 | 591 | warn_protocol = value; |
0b6f2917 NB |
592 | break; |
593 | ||
594 | case OPT_Wselector: | |
7b086b11 | 595 | warn_selector = value; |
0b6f2917 NB |
596 | break; |
597 | ||
598 | case OPT_Wredundant_decls: | |
7b086b11 | 599 | warn_redundant_decls = value; |
0b6f2917 NB |
600 | break; |
601 | ||
602 | case OPT_Wreorder: | |
7b086b11 | 603 | warn_reorder = value; |
0b6f2917 NB |
604 | break; |
605 | ||
606 | case OPT_Wreturn_type: | |
7b086b11 | 607 | warn_return_type = value; |
0b6f2917 NB |
608 | break; |
609 | ||
610 | case OPT_Wsequence_point: | |
7b086b11 | 611 | warn_sequence_point = value; |
0b6f2917 NB |
612 | break; |
613 | ||
614 | case OPT_Wsign_compare: | |
7b086b11 | 615 | warn_sign_compare = value; |
0b6f2917 NB |
616 | break; |
617 | ||
618 | case OPT_Wsign_promo: | |
7b086b11 | 619 | warn_sign_promo = value; |
0b6f2917 NB |
620 | break; |
621 | ||
622 | case OPT_Wstrict_prototypes: | |
7b086b11 | 623 | warn_strict_prototypes = value; |
0b6f2917 NB |
624 | break; |
625 | ||
626 | case OPT_Wsynth: | |
7b086b11 | 627 | warn_synth = value; |
0b6f2917 NB |
628 | break; |
629 | ||
18bdccaa | 630 | case OPT_Wsystem_headers: |
7b086b11 | 631 | cpp_opts->warn_system_headers = value; |
18bdccaa NB |
632 | break; |
633 | ||
0b6f2917 | 634 | case OPT_Wtraditional: |
7b086b11 NB |
635 | warn_traditional = value; |
636 | cpp_opts->warn_traditional = value; | |
18bdccaa NB |
637 | break; |
638 | ||
639 | case OPT_Wtrigraphs: | |
7b086b11 | 640 | cpp_opts->warn_trigraphs = value; |
18bdccaa NB |
641 | break; |
642 | ||
ece4ce85 | 643 | case OPT_Wundeclared_selector: |
7b086b11 | 644 | warn_undeclared_selector = value; |
ece4ce85 NP |
645 | break; |
646 | ||
18bdccaa | 647 | case OPT_Wundef: |
7b086b11 | 648 | cpp_opts->warn_undef = value; |
0b6f2917 NB |
649 | break; |
650 | ||
651 | case OPT_Wunknown_pragmas: | |
652 | /* Set to greater than 1, so that even unknown pragmas in | |
2f6e4e97 | 653 | system headers will be warned about. */ |
7b086b11 | 654 | warn_unknown_pragmas = value * 2; |
0b6f2917 NB |
655 | break; |
656 | ||
18bdccaa | 657 | case OPT_Wunused_macros: |
7b086b11 | 658 | warn_unused_macros = value; |
18bdccaa NB |
659 | break; |
660 | ||
e5b79219 RH |
661 | case OPT_Wvariadic_macros: |
662 | warn_variadic_macros = value; | |
663 | break; | |
664 | ||
0b6f2917 | 665 | case OPT_Wwrite_strings: |
37fa72e9 | 666 | if (!c_dialect_cxx ()) |
7b086b11 | 667 | flag_const_strings = value; |
0b6f2917 | 668 | else |
7b086b11 | 669 | warn_write_strings = value; |
0b6f2917 | 670 | break; |
2f6e4e97 | 671 | |
f749a36b | 672 | case OPT_ansi: |
37fa72e9 | 673 | if (!c_dialect_cxx ()) |
f749a36b NB |
674 | set_std_c89 (false, true); |
675 | else | |
676 | set_std_cxx98 (true); | |
677 | break; | |
0b6f2917 | 678 | |
4b7091eb NB |
679 | case OPT_d: |
680 | handle_OPT_d (arg); | |
681 | break; | |
682 | ||
0b6f2917 | 683 | case OPT_fcond_mismatch: |
37fa72e9 | 684 | if (!c_dialect_cxx ()) |
0b6f2917 | 685 | { |
7b086b11 | 686 | flag_cond_mismatch = value; |
0b6f2917 NB |
687 | break; |
688 | } | |
689 | /* Fall through. */ | |
690 | ||
691 | case OPT_fall_virtual: | |
7813d14c | 692 | case OPT_falt_external_templates: |
0b6f2917 | 693 | case OPT_fenum_int_equiv: |
7813d14c | 694 | case OPT_fexternal_templates: |
0b6f2917 NB |
695 | case OPT_fguiding_decls: |
696 | case OPT_fhonor_std: | |
697 | case OPT_fhuge_objects: | |
698 | case OPT_flabels_ok: | |
fef3106c | 699 | case OPT_fname_mangling_version_: |
0b6f2917 NB |
700 | case OPT_fnew_abi: |
701 | case OPT_fnonnull_objects: | |
702 | case OPT_fsquangle: | |
703 | case OPT_fstrict_prototype: | |
704 | case OPT_fthis_is_variable: | |
705 | case OPT_fvtable_thunks: | |
706 | case OPT_fxref: | |
a0c8285b | 707 | case OPT_fvtable_gc: |
cf03fd63 | 708 | warning ("switch \"%s\" is no longer supported", option->opt_text); |
0b6f2917 NB |
709 | break; |
710 | ||
711 | case OPT_faccess_control: | |
7b086b11 | 712 | flag_access_control = value; |
0b6f2917 NB |
713 | break; |
714 | ||
0b6f2917 | 715 | case OPT_fasm: |
7b086b11 | 716 | flag_no_asm = !value; |
0b6f2917 NB |
717 | break; |
718 | ||
719 | case OPT_fbuiltin: | |
7b086b11 | 720 | flag_no_builtin = !value; |
0b6f2917 NB |
721 | break; |
722 | ||
723 | case OPT_fbuiltin_: | |
7b086b11 | 724 | if (value) |
4b7091eb NB |
725 | result = 0; |
726 | else | |
727 | disable_builtin_function (arg); | |
0b6f2917 NB |
728 | break; |
729 | ||
730 | case OPT_fdollars_in_identifiers: | |
7b086b11 | 731 | cpp_opts->dollars_in_ident = value; |
0b6f2917 NB |
732 | break; |
733 | ||
fef3106c | 734 | case OPT_fdump_: |
f3f735eb | 735 | if (!dump_switch_p (arg)) |
4b7091eb | 736 | result = 0; |
0b6f2917 NB |
737 | break; |
738 | ||
739 | case OPT_ffreestanding: | |
7b086b11 | 740 | value = !value; |
938d968e | 741 | /* Fall through.... */ |
0b6f2917 | 742 | case OPT_fhosted: |
7b086b11 NB |
743 | flag_hosted = value; |
744 | flag_no_builtin = !value; | |
0b6f2917 | 745 | /* warn_main will be 2 if set by -Wall, 1 if set by -Wmain */ |
7b086b11 | 746 | if (!value && warn_main == 2) |
0b6f2917 NB |
747 | warn_main = 0; |
748 | break; | |
749 | ||
750 | case OPT_fshort_double: | |
7b086b11 | 751 | flag_short_double = value; |
0b6f2917 NB |
752 | break; |
753 | ||
754 | case OPT_fshort_enums: | |
7b086b11 | 755 | flag_short_enums = value; |
0b6f2917 NB |
756 | break; |
757 | ||
758 | case OPT_fshort_wchar: | |
7b086b11 | 759 | flag_short_wchar = value; |
0b6f2917 NB |
760 | break; |
761 | ||
762 | case OPT_fsigned_bitfields: | |
7b086b11 | 763 | flag_signed_bitfields = value; |
0b6f2917 NB |
764 | explicit_flag_signed_bitfields = 1; |
765 | break; | |
766 | ||
767 | case OPT_fsigned_char: | |
7b086b11 | 768 | flag_signed_char = value; |
0b6f2917 NB |
769 | break; |
770 | ||
771 | case OPT_funsigned_bitfields: | |
7b086b11 | 772 | flag_signed_bitfields = !value; |
0b6f2917 NB |
773 | explicit_flag_signed_bitfields = 1; |
774 | break; | |
775 | ||
776 | case OPT_funsigned_char: | |
7b086b11 | 777 | flag_signed_char = !value; |
0b6f2917 NB |
778 | break; |
779 | ||
780 | case OPT_fcheck_new: | |
7b086b11 | 781 | flag_check_new = value; |
0b6f2917 NB |
782 | break; |
783 | ||
784 | case OPT_fconserve_space: | |
7b086b11 | 785 | flag_conserve_space = value; |
0b6f2917 NB |
786 | break; |
787 | ||
788 | case OPT_fconst_strings: | |
7b086b11 | 789 | flag_const_strings = value; |
0b6f2917 NB |
790 | break; |
791 | ||
fef3106c | 792 | case OPT_fconstant_string_class_: |
4b7091eb | 793 | constant_string_class_name = arg; |
0b6f2917 NB |
794 | break; |
795 | ||
796 | case OPT_fdefault_inline: | |
7b086b11 | 797 | flag_default_inline = value; |
0b6f2917 NB |
798 | break; |
799 | ||
800 | case OPT_felide_constructors: | |
7b086b11 | 801 | flag_elide_constructors = value; |
0b6f2917 NB |
802 | break; |
803 | ||
804 | case OPT_fenforce_eh_specs: | |
7b086b11 | 805 | flag_enforce_eh_specs = value; |
0b6f2917 NB |
806 | break; |
807 | ||
1c2de642 | 808 | case OPT_ffixed_form: |
fef3106c | 809 | case OPT_ffixed_line_length_: |
1c2de642 | 810 | /* Fortran front end options ignored when preprocessing only. */ |
058de654 NB |
811 | if (!flag_preprocess_only) |
812 | result = 0; | |
1c2de642 TM |
813 | break; |
814 | ||
0b6f2917 | 815 | case OPT_ffor_scope: |
7b086b11 | 816 | flag_new_for_scope = value; |
0b6f2917 NB |
817 | break; |
818 | ||
819 | case OPT_fgnu_keywords: | |
7b086b11 | 820 | flag_no_gnu_keywords = !value; |
0b6f2917 NB |
821 | break; |
822 | ||
823 | case OPT_fgnu_runtime: | |
7b086b11 | 824 | flag_next_runtime = !value; |
0b6f2917 NB |
825 | break; |
826 | ||
827 | case OPT_fhandle_exceptions: | |
f75d3e11 | 828 | warning ("-fhandle-exceptions has been renamed -fexceptions (and is now on by default)"); |
7b086b11 | 829 | flag_exceptions = value; |
0b6f2917 NB |
830 | break; |
831 | ||
832 | case OPT_fimplement_inlines: | |
7b086b11 | 833 | flag_implement_inlines = value; |
0b6f2917 NB |
834 | break; |
835 | ||
836 | case OPT_fimplicit_inline_templates: | |
7b086b11 | 837 | flag_implicit_inline_templates = value; |
0b6f2917 NB |
838 | break; |
839 | ||
840 | case OPT_fimplicit_templates: | |
7b086b11 | 841 | flag_implicit_templates = value; |
0b6f2917 NB |
842 | break; |
843 | ||
844 | case OPT_fms_extensions: | |
7b086b11 | 845 | flag_ms_extensions = value; |
0b6f2917 NB |
846 | break; |
847 | ||
848 | case OPT_fnext_runtime: | |
7b086b11 | 849 | flag_next_runtime = value; |
0b6f2917 NB |
850 | break; |
851 | ||
264fa2db ZL |
852 | case OPT_fnil_receivers: |
853 | flag_nil_receivers = value; | |
854 | break; | |
855 | ||
0b6f2917 | 856 | case OPT_fnonansi_builtins: |
7b086b11 | 857 | flag_no_nonansi_builtin = !value; |
0b6f2917 NB |
858 | break; |
859 | ||
264fa2db ZL |
860 | case OPT_fobjc_exceptions: |
861 | flag_objc_exceptions = value; | |
862 | break; | |
863 | ||
18bdccaa | 864 | case OPT_foperator_names: |
7b086b11 | 865 | cpp_opts->operator_names = value; |
18bdccaa NB |
866 | break; |
867 | ||
0b6f2917 | 868 | case OPT_foptional_diags: |
7b086b11 | 869 | flag_optional_diags = value; |
0b6f2917 NB |
870 | break; |
871 | ||
17211ab5 | 872 | case OPT_fpch_deps: |
7b086b11 | 873 | cpp_opts->restore_pch_deps = value; |
17211ab5 GK |
874 | break; |
875 | ||
0b6f2917 | 876 | case OPT_fpermissive: |
7b086b11 | 877 | flag_permissive = value; |
0b6f2917 NB |
878 | break; |
879 | ||
18bdccaa | 880 | case OPT_fpreprocessed: |
7b086b11 | 881 | cpp_opts->preprocessed = value; |
18bdccaa NB |
882 | break; |
883 | ||
264fa2db ZL |
884 | case OPT_freplace_objc_classes: |
885 | flag_replace_objc_classes = value; | |
886 | break; | |
887 | ||
0b6f2917 | 888 | case OPT_frepo: |
7b086b11 NB |
889 | flag_use_repository = value; |
890 | if (value) | |
0b6f2917 NB |
891 | flag_implicit_templates = 0; |
892 | break; | |
893 | ||
894 | case OPT_frtti: | |
7b086b11 | 895 | flag_rtti = value; |
0b6f2917 NB |
896 | break; |
897 | ||
18bdccaa | 898 | case OPT_fshow_column: |
7b086b11 | 899 | cpp_opts->show_column = value; |
18bdccaa NB |
900 | break; |
901 | ||
0b6f2917 | 902 | case OPT_fstats: |
7b086b11 | 903 | flag_detailed_statistics = value; |
0b6f2917 NB |
904 | break; |
905 | ||
fef3106c | 906 | case OPT_ftabstop_: |
18bdccaa | 907 | /* It is documented that we silently ignore silly values. */ |
7b086b11 NB |
908 | if (value >= 1 && value <= 100) |
909 | cpp_opts->tabstop = value; | |
18bdccaa NB |
910 | break; |
911 | ||
e6cc3a24 ZW |
912 | case OPT_fexec_charset_: |
913 | cpp_opts->narrow_charset = arg; | |
914 | break; | |
915 | ||
916 | case OPT_fwide_exec_charset_: | |
917 | cpp_opts->wide_charset = arg; | |
918 | break; | |
919 | ||
16dd5cfe EC |
920 | case OPT_finput_charset_: |
921 | cpp_opts->input_charset = arg; | |
922 | break; | |
923 | ||
fef3106c | 924 | case OPT_ftemplate_depth_: |
7b086b11 | 925 | max_tinst_depth = value; |
0b6f2917 NB |
926 | break; |
927 | ||
0b6f2917 | 928 | case OPT_fuse_cxa_atexit: |
7b086b11 | 929 | flag_use_cxa_atexit = value; |
0b6f2917 NB |
930 | break; |
931 | ||
932 | case OPT_fweak: | |
7b086b11 | 933 | flag_weak = value; |
0b6f2917 | 934 | break; |
264fa2db ZL |
935 | |
936 | case OPT_fzero_link: | |
937 | flag_zero_link = value; | |
938 | break; | |
0b6f2917 NB |
939 | |
940 | case OPT_gen_decls: | |
941 | flag_gen_declaration = 1; | |
942 | break; | |
943 | ||
5793b276 NB |
944 | case OPT_idirafter: |
945 | add_path (xstrdup (arg), AFTER, 0); | |
946 | break; | |
947 | ||
255c10b1 | 948 | case OPT_imacros: |
23345bbb NB |
949 | case OPT_include: |
950 | defer_opt (code, arg); | |
951 | break; | |
952 | ||
5793b276 NB |
953 | case OPT_iprefix: |
954 | iprefix = arg; | |
955 | break; | |
956 | ||
957 | case OPT_isysroot: | |
958 | sysroot = arg; | |
959 | break; | |
960 | ||
961 | case OPT_isystem: | |
962 | add_path (xstrdup (arg), SYSTEM, 0); | |
963 | break; | |
964 | ||
965 | case OPT_iwithprefix: | |
966 | add_prefixed_path (arg, SYSTEM); | |
967 | break; | |
968 | ||
969 | case OPT_iwithprefixbefore: | |
970 | add_prefixed_path (arg, BRACKET); | |
971 | break; | |
972 | ||
f749a36b NB |
973 | case OPT_lang_asm: |
974 | cpp_set_lang (parse_in, CLK_ASM); | |
42ad6c9e | 975 | cpp_opts->dollars_in_ident = false; |
f749a36b NB |
976 | break; |
977 | ||
978 | case OPT_lang_objc: | |
979 | cpp_opts->objc = 1; | |
980 | break; | |
981 | ||
4b7091eb | 982 | case OPT_nostdinc: |
5793b276 | 983 | std_inc = false; |
4b7091eb NB |
984 | break; |
985 | ||
fef3106c | 986 | case OPT_nostdinc__: |
5793b276 | 987 | std_cxx_inc = false; |
4b7091eb NB |
988 | break; |
989 | ||
b4a93904 | 990 | case OPT_o: |
76c3e73e NB |
991 | if (!out_fname) |
992 | out_fname = arg; | |
b4a93904 | 993 | else |
f75d3e11 | 994 | error ("output filename specified twice"); |
b4a93904 NB |
995 | break; |
996 | ||
18bdccaa NB |
997 | /* We need to handle the -pedantic switches here, rather than in |
998 | c_common_post_options, so that a subsequent -Wno-endif-labels | |
999 | is not overridden. */ | |
1000 | case OPT_pedantic_errors: | |
1001 | cpp_opts->pedantic_errors = 1; | |
938d968e | 1002 | /* Fall through. */ |
18bdccaa NB |
1003 | case OPT_pedantic: |
1004 | cpp_opts->pedantic = 1; | |
1005 | cpp_opts->warn_endif_labels = 1; | |
1006 | break; | |
1007 | ||
0b6f2917 NB |
1008 | case OPT_print_objc_runtime_info: |
1009 | print_struct_values = 1; | |
1010 | break; | |
1011 | ||
b4a93904 NB |
1012 | case OPT_remap: |
1013 | cpp_opts->remap = 1; | |
0b6f2917 NB |
1014 | break; |
1015 | ||
fef3106c NB |
1016 | case OPT_std_c__98: |
1017 | case OPT_std_gnu__98: | |
1018 | set_std_cxx98 (code == OPT_std_c__98 /* ISO */); | |
0b6f2917 NB |
1019 | break; |
1020 | ||
1021 | case OPT_std_c89: | |
1022 | case OPT_std_iso9899_1990: | |
b4a93904 NB |
1023 | case OPT_std_iso9899_199409: |
1024 | set_std_c89 (code == OPT_std_iso9899_199409 /* c94 */, true /* ISO */); | |
f749a36b NB |
1025 | break; |
1026 | ||
1027 | case OPT_std_gnu89: | |
1028 | set_std_c89 (false /* c94 */, false /* ISO */); | |
0b6f2917 NB |
1029 | break; |
1030 | ||
1031 | case OPT_std_c99: | |
1032 | case OPT_std_c9x: | |
1033 | case OPT_std_iso9899_1999: | |
1034 | case OPT_std_iso9899_199x: | |
b4a93904 | 1035 | set_std_c99 (true /* ISO */); |
0b6f2917 NB |
1036 | break; |
1037 | ||
0b6f2917 NB |
1038 | case OPT_std_gnu99: |
1039 | case OPT_std_gnu9x: | |
b4a93904 | 1040 | set_std_c99 (false /* ISO */); |
0b6f2917 NB |
1041 | break; |
1042 | ||
4b7091eb NB |
1043 | case OPT_trigraphs: |
1044 | cpp_opts->trigraphs = 1; | |
1045 | break; | |
1046 | ||
1047 | case OPT_traditional_cpp: | |
1048 | cpp_opts->traditional = 1; | |
1049 | break; | |
1050 | ||
0b6f2917 NB |
1051 | case OPT_undef: |
1052 | flag_undef = 1; | |
1053 | break; | |
0b6f2917 | 1054 | |
4b7091eb NB |
1055 | case OPT_w: |
1056 | cpp_opts->inhibit_warnings = 1; | |
1057 | break; | |
1058 | ||
1059 | case OPT_v: | |
5793b276 | 1060 | verbose = true; |
4b7091eb NB |
1061 | break; |
1062 | } | |
0b6f2917 | 1063 | |
0b6f2917 NB |
1064 | return result; |
1065 | } | |
1066 | ||
1067 | /* Post-switch processing. */ | |
1068 | bool | |
8e9ea4d7 | 1069 | c_common_post_options (const char **pfilename) |
0b6f2917 | 1070 | { |
8e9ea4d7 PB |
1071 | struct cpp_callbacks *cb; |
1072 | ||
460bd0e3 | 1073 | /* Canonicalize the input and output filenames. */ |
d1bd0ded GK |
1074 | if (in_fnames == NULL) |
1075 | { | |
1076 | in_fnames = xmalloc (sizeof (in_fnames[0])); | |
1077 | in_fnames[0] = ""; | |
1078 | } | |
1079 | else if (strcmp (in_fnames[0], "-") == 0) | |
1080 | in_fnames[0] = ""; | |
460bd0e3 | 1081 | |
76c3e73e NB |
1082 | if (out_fname == NULL || !strcmp (out_fname, "-")) |
1083 | out_fname = ""; | |
1084 | ||
cd79e210 | 1085 | if (cpp_opts->deps.style == DEPS_NONE) |
76c3e73e NB |
1086 | check_deps_environment_vars (); |
1087 | ||
f4ff5a69 | 1088 | handle_deferred_opts (); |
76c3e73e | 1089 | |
f4ff5a69 | 1090 | sanitize_cpp_opts (); |
460bd0e3 | 1091 | |
5793b276 | 1092 | register_include_chains (parse_in, sysroot, iprefix, |
37fa72e9 | 1093 | std_inc, std_cxx_inc && c_dialect_cxx (), verbose); |
5793b276 | 1094 | |
0b6f2917 NB |
1095 | flag_inline_trees = 1; |
1096 | ||
1097 | /* Use tree inlining if possible. Function instrumentation is only | |
1098 | done in the RTL level, so we disable tree inlining. */ | |
1099 | if (! flag_instrument_function_entry_exit) | |
1100 | { | |
1101 | if (!flag_no_inline) | |
1102 | flag_no_inline = 1; | |
1103 | if (flag_inline_functions) | |
1104 | { | |
1105 | flag_inline_trees = 2; | |
1106 | flag_inline_functions = 0; | |
1107 | } | |
1108 | } | |
1109 | ||
87f85ea0 ZW |
1110 | /* -Wextra implies -Wsign-compare, but not if explicitly |
1111 | overridden. */ | |
1112 | if (warn_sign_compare == -1) | |
1113 | warn_sign_compare = extra_warnings; | |
1114 | ||
0b6f2917 NB |
1115 | /* Special format checking options don't work without -Wformat; warn if |
1116 | they are used. */ | |
1117 | if (warn_format_y2k && !warn_format) | |
1118 | warning ("-Wformat-y2k ignored without -Wformat"); | |
1119 | if (warn_format_extra_args && !warn_format) | |
1120 | warning ("-Wformat-extra-args ignored without -Wformat"); | |
1121 | if (warn_format_zero_length && !warn_format) | |
1122 | warning ("-Wformat-zero-length ignored without -Wformat"); | |
1123 | if (warn_format_nonliteral && !warn_format) | |
1124 | warning ("-Wformat-nonliteral ignored without -Wformat"); | |
1125 | if (warn_format_security && !warn_format) | |
1126 | warning ("-Wformat-security ignored without -Wformat"); | |
1127 | if (warn_missing_format_attribute && !warn_format) | |
1128 | warning ("-Wmissing-format-attribute ignored without -Wformat"); | |
1129 | ||
460bd0e3 NB |
1130 | if (flag_preprocess_only) |
1131 | { | |
63973df3 NB |
1132 | /* Open the output now. We must do so even if flag_no_output is |
1133 | on, because there may be other output than from the actual | |
1134 | preprocessing (e.g. from -dM). */ | |
1135 | if (out_fname[0] == '\0') | |
1136 | out_stream = stdout; | |
1137 | else | |
1138 | out_stream = fopen (out_fname, "w"); | |
1139 | ||
1140 | if (out_stream == NULL) | |
9d10c9a9 | 1141 | { |
fa6ef813 | 1142 | fatal_error ("opening output file %s: %m", out_fname); |
c366ade5 | 1143 | return false; |
9d10c9a9 | 1144 | } |
63973df3 | 1145 | |
d1bd0ded GK |
1146 | if (num_in_fnames > 1) |
1147 | error ("too many filenames given. Type %s --help for usage", | |
1148 | progname); | |
1149 | ||
9d10c9a9 | 1150 | init_pp_output (out_stream); |
460bd0e3 | 1151 | } |
9d10c9a9 NB |
1152 | else |
1153 | { | |
1154 | init_c_lex (); | |
460bd0e3 | 1155 | |
9d10c9a9 | 1156 | /* Yuk. WTF is this? I do know ObjC relies on it somewhere. */ |
d479d37f | 1157 | input_line = 0; |
9d10c9a9 | 1158 | } |
63973df3 | 1159 | |
8e9ea4d7 PB |
1160 | cb = cpp_get_callbacks (parse_in); |
1161 | cb->file_change = cb_file_change; | |
1162 | cb->dir_change = cb_dir_change; | |
4169c321 | 1163 | cpp_post_options (parse_in); |
23345bbb | 1164 | |
d479d37f NS |
1165 | saved_lineno = input_line; |
1166 | input_line = 0; | |
4bfec483 NB |
1167 | |
1168 | /* If an error has occurred in cpplib, note it so we fail | |
1169 | immediately. */ | |
1170 | errorcount += cpp_errors (parse_in); | |
1171 | ||
8e9ea4d7 PB |
1172 | *pfilename = this_input_filename |
1173 | = cpp_read_main_file (parse_in, in_fnames[0]); | |
1174 | if (this_input_filename == NULL) | |
1175 | return true; | |
1176 | ||
8a4baa83 PB |
1177 | if (flag_working_directory |
1178 | && flag_preprocess_only && ! flag_no_line_commands) | |
8e9ea4d7 PB |
1179 | pp_dir_change (parse_in, get_src_pwd ()); |
1180 | ||
4bfec483 NB |
1181 | return flag_preprocess_only; |
1182 | } | |
1183 | ||
1184 | /* Front end initialization common to C, ObjC and C++. */ | |
1185 | bool | |
2f6e4e97 | 1186 | c_common_init (void) |
4bfec483 | 1187 | { |
d479d37f | 1188 | input_line = saved_lineno; |
4bfec483 NB |
1189 | |
1190 | /* Set up preprocessor arithmetic. Must be done after call to | |
1191 | c_common_nodes_and_builtins for type nodes to be good. */ | |
1192 | cpp_opts->precision = TYPE_PRECISION (intmax_type_node); | |
1193 | cpp_opts->char_precision = TYPE_PRECISION (char_type_node); | |
1194 | cpp_opts->int_precision = TYPE_PRECISION (integer_type_node); | |
1195 | cpp_opts->wchar_precision = TYPE_PRECISION (wchar_type_node); | |
8df83eae | 1196 | cpp_opts->unsigned_wchar = TYPE_UNSIGNED (wchar_type_node); |
e6cc3a24 ZW |
1197 | cpp_opts->bytes_big_endian = BYTES_BIG_ENDIAN; |
1198 | ||
1199 | /* This can't happen until after wchar_precision and bytes_big_endian | |
1200 | are known. */ | |
1201 | cpp_init_iconv (parse_in); | |
460bd0e3 | 1202 | |
9d10c9a9 NB |
1203 | if (flag_preprocess_only) |
1204 | { | |
8e9ea4d7 PB |
1205 | finish_options (); |
1206 | preprocess_file (parse_in); | |
4bfec483 | 1207 | return false; |
9d10c9a9 NB |
1208 | } |
1209 | ||
63973df3 | 1210 | /* Has to wait until now so that cpplib has its hash table. */ |
460bd0e3 NB |
1211 | init_pragma (); |
1212 | ||
4bfec483 | 1213 | return true; |
76c3e73e NB |
1214 | } |
1215 | ||
d1bd0ded GK |
1216 | /* Initialize the integrated preprocessor after debug output has been |
1217 | initialized; loop over each input file. */ | |
23345bbb | 1218 | void |
f75fbaf7 | 1219 | c_common_parse_file (int set_yydebug) |
23345bbb NB |
1220 | { |
1221 | #if YYDEBUG != 0 | |
1222 | yydebug = set_yydebug; | |
1223 | #else | |
f75fbaf7 ZW |
1224 | if (set_yydebug) |
1225 | warning ("YYDEBUG not defined"); | |
23345bbb NB |
1226 | #endif |
1227 | ||
f75fbaf7 ZW |
1228 | if (num_in_fnames > 1) |
1229 | fatal_error ("sorry, inter-module analysis temporarily out of commission"); | |
d1bd0ded | 1230 | |
f75fbaf7 ZW |
1231 | finish_options (); |
1232 | pch_init (); | |
1233 | push_file_scope (); | |
1234 | c_parse_file (); | |
d1bd0ded | 1235 | finish_file (); |
f75fbaf7 | 1236 | pop_file_scope (); |
23345bbb NB |
1237 | } |
1238 | ||
76c3e73e NB |
1239 | /* Common finish hook for the C, ObjC and C++ front ends. */ |
1240 | void | |
2f6e4e97 | 1241 | c_common_finish (void) |
76c3e73e NB |
1242 | { |
1243 | FILE *deps_stream = NULL; | |
1244 | ||
f4ff5a69 | 1245 | if (cpp_opts->deps.style != DEPS_NONE) |
76c3e73e NB |
1246 | { |
1247 | /* If -M or -MM was seen without -MF, default output to the | |
1248 | output stream. */ | |
f4ff5a69 | 1249 | if (!deps_file) |
76c3e73e NB |
1250 | deps_stream = out_stream; |
1251 | else | |
1252 | { | |
f4ff5a69 | 1253 | deps_stream = fopen (deps_file, deps_append ? "a": "w"); |
76c3e73e | 1254 | if (!deps_stream) |
fa6ef813 | 1255 | fatal_error ("opening dependency file %s: %m", deps_file); |
76c3e73e NB |
1256 | } |
1257 | } | |
1258 | ||
1259 | /* For performance, avoid tearing down cpplib's internal structures | |
1260 | with cpp_destroy (). */ | |
1261 | errorcount += cpp_finish (parse_in, deps_stream); | |
1262 | ||
1263 | if (deps_stream && deps_stream != out_stream | |
1264 | && (ferror (deps_stream) || fclose (deps_stream))) | |
fa6ef813 | 1265 | fatal_error ("closing dependency file %s: %m", deps_file); |
76c3e73e NB |
1266 | |
1267 | if (out_stream && (ferror (out_stream) || fclose (out_stream))) | |
fa6ef813 | 1268 | fatal_error ("when writing output to %s: %m", out_fname); |
76c3e73e NB |
1269 | } |
1270 | ||
76c3e73e NB |
1271 | /* Either of two environment variables can specify output of |
1272 | dependencies. Their value is either "OUTPUT_FILE" or "OUTPUT_FILE | |
1273 | DEPS_TARGET", where OUTPUT_FILE is the file to write deps info to | |
1274 | and DEPS_TARGET is the target to mention in the deps. They also | |
1275 | result in dependency information being appended to the output file | |
182d89a3 NB |
1276 | rather than overwriting it, and like Sun's compiler |
1277 | SUNPRO_DEPENDENCIES suppresses the dependency on the main file. */ | |
76c3e73e | 1278 | static void |
2f6e4e97 | 1279 | check_deps_environment_vars (void) |
76c3e73e NB |
1280 | { |
1281 | char *spec; | |
1282 | ||
1283 | GET_ENVIRONMENT (spec, "DEPENDENCIES_OUTPUT"); | |
1284 | if (spec) | |
f4ff5a69 | 1285 | cpp_opts->deps.style = DEPS_USER; |
76c3e73e NB |
1286 | else |
1287 | { | |
1288 | GET_ENVIRONMENT (spec, "SUNPRO_DEPENDENCIES"); | |
1289 | if (spec) | |
182d89a3 NB |
1290 | { |
1291 | cpp_opts->deps.style = DEPS_SYSTEM; | |
1292 | cpp_opts->deps.ignore_main_file = true; | |
1293 | } | |
76c3e73e NB |
1294 | } |
1295 | ||
1296 | if (spec) | |
1297 | { | |
1298 | /* Find the space before the DEPS_TARGET, if there is one. */ | |
1299 | char *s = strchr (spec, ' '); | |
1300 | if (s) | |
1301 | { | |
1302 | /* Let the caller perform MAKE quoting. */ | |
f4ff5a69 | 1303 | defer_opt (OPT_MT, s + 1); |
76c3e73e NB |
1304 | *s = '\0'; |
1305 | } | |
1306 | ||
1307 | /* Command line -MF overrides environment variables and default. */ | |
f4ff5a69 NB |
1308 | if (!deps_file) |
1309 | deps_file = spec; | |
76c3e73e | 1310 | |
f4ff5a69 NB |
1311 | deps_append = 1; |
1312 | } | |
1313 | } | |
1314 | ||
1315 | /* Handle deferred command line switches. */ | |
1316 | static void | |
2f6e4e97 | 1317 | handle_deferred_opts (void) |
f4ff5a69 NB |
1318 | { |
1319 | size_t i; | |
1320 | ||
1321 | for (i = 0; i < deferred_count; i++) | |
1322 | { | |
1323 | struct deferred_opt *opt = &deferred_opts[i]; | |
1324 | ||
c1bad961 NB |
1325 | if (opt->code == OPT_MT || opt->code == OPT_MQ) |
1326 | cpp_add_dependency_target (parse_in, opt->arg, opt->code == OPT_MQ); | |
f4ff5a69 | 1327 | } |
f4ff5a69 NB |
1328 | } |
1329 | ||
1330 | /* These settings are appropriate for GCC, but not necessarily so for | |
1331 | cpplib as a library. */ | |
1332 | static void | |
2f6e4e97 | 1333 | sanitize_cpp_opts (void) |
f4ff5a69 NB |
1334 | { |
1335 | /* If we don't know what style of dependencies to output, complain | |
1336 | if any other dependency switches have been given. */ | |
1337 | if (deps_seen && cpp_opts->deps.style == DEPS_NONE) | |
1338 | error ("to generate dependencies you must specify either -M or -MM"); | |
1339 | ||
1340 | /* -dM and dependencies suppress normal output; do it here so that | |
1341 | the last -d[MDN] switch overrides earlier ones. */ | |
63973df3 NB |
1342 | if (flag_dump_macros == 'M') |
1343 | flag_no_output = 1; | |
f4ff5a69 NB |
1344 | |
1345 | /* Disable -dD, -dN and -dI if normal output is suppressed. Allow | |
1346 | -dM since at least glibc relies on -M -dM to work. */ | |
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; | |
76c3e73e | 1352 | } |
f4ff5a69 NB |
1353 | |
1354 | cpp_opts->unsigned_char = !flag_signed_char; | |
1355 | cpp_opts->stdc_0_in_system_headers = STDC_0_IN_SYSTEM_HEADERS; | |
1356 | ||
1357 | /* We want -Wno-long-long to override -pedantic -std=non-c99 | |
1358 | and/or -Wtraditional, whatever the ordering. */ | |
1359 | cpp_opts->warn_long_long | |
1360 | = warn_long_long && ((!flag_isoc99 && pedantic) || warn_traditional); | |
b20d9f0c | 1361 | |
e5b79219 RH |
1362 | /* Similarly with -Wno-variadic-macros. No check for c99 here, since |
1363 | this also turns off warnings about GCCs extension. */ | |
1364 | cpp_opts->warn_variadic_macros | |
1365 | = warn_variadic_macros && (pedantic || warn_traditional); | |
1366 | ||
b20d9f0c AO |
1367 | /* If we're generating preprocessor output, emit current directory |
1368 | if explicitly requested or if debugging information is enabled. | |
1369 | ??? Maybe we should only do it for debugging formats that | |
1370 | actually output the current directory? */ | |
1371 | if (flag_working_directory == -1) | |
1372 | flag_working_directory = (debug_info_level != DINFO_LEVEL_NONE); | |
f4ff5a69 NB |
1373 | } |
1374 | ||
5793b276 NB |
1375 | /* Add include path with a prefix at the front of its name. */ |
1376 | static void | |
2f6e4e97 | 1377 | add_prefixed_path (const char *suffix, size_t chain) |
5793b276 | 1378 | { |
52999738 | 1379 | char *path; |
5793b276 | 1380 | const char *prefix; |
52999738 | 1381 | size_t prefix_len, suffix_len; |
5793b276 | 1382 | |
52999738 ZW |
1383 | suffix_len = strlen (suffix); |
1384 | prefix = iprefix ? iprefix : cpp_GCC_INCLUDE_DIR; | |
1385 | prefix_len = iprefix ? strlen (iprefix) : cpp_GCC_INCLUDE_DIR_len; | |
1386 | ||
1387 | path = xmalloc (prefix_len + suffix_len + 1); | |
1388 | memcpy (path, prefix, prefix_len); | |
1389 | memcpy (path + prefix_len, suffix, suffix_len); | |
1390 | path[prefix_len + suffix_len] = '\0'; | |
1391 | ||
1392 | add_path (path, chain, 0); | |
5793b276 NB |
1393 | } |
1394 | ||
8e9ea4d7 PB |
1395 | /* Handle -D, -U, -A, -imacros, and the first -include. */ |
1396 | static void | |
1397 | finish_options (void) | |
255c10b1 | 1398 | { |
255c10b1 NB |
1399 | if (!cpp_opts->preprocessed) |
1400 | { | |
c1bad961 NB |
1401 | size_t i; |
1402 | ||
8e9ea4d7 | 1403 | cpp_change_file (parse_in, LC_RENAME, _("<built-in>")); |
6e270179 | 1404 | cpp_init_builtins (parse_in, flag_hosted); |
c1bad961 | 1405 | c_cpp_builtins (parse_in); |
78b8811a HPN |
1406 | |
1407 | /* We're about to send user input to cpplib, so make it warn for | |
1408 | things that we previously (when we sent it internal definitions) | |
1409 | told it to not warn. | |
1410 | ||
1411 | C99 permits implementation-defined characters in identifiers. | |
1412 | The documented meaning of -std= is to turn off extensions that | |
1413 | conflict with the specified standard, and since a strictly | |
1414 | conforming program cannot contain a '$', we do not condition | |
1415 | their acceptance on the -std= setting. */ | |
1416 | cpp_opts->warn_dollars = (cpp_opts->pedantic && !cpp_opts->c99); | |
1417 | ||
b4e46cea | 1418 | cpp_change_file (parse_in, LC_RENAME, _("<command line>")); |
c1bad961 NB |
1419 | for (i = 0; i < deferred_count; i++) |
1420 | { | |
1421 | struct deferred_opt *opt = &deferred_opts[i]; | |
1422 | ||
1423 | if (opt->code == OPT_D) | |
1424 | cpp_define (parse_in, opt->arg); | |
1425 | else if (opt->code == OPT_U) | |
1426 | cpp_undef (parse_in, opt->arg); | |
1427 | else if (opt->code == OPT_A) | |
1428 | { | |
1429 | if (opt->arg[0] == '-') | |
1430 | cpp_unassert (parse_in, opt->arg + 1); | |
1431 | else | |
1432 | cpp_assert (parse_in, opt->arg); | |
1433 | } | |
1434 | } | |
255c10b1 | 1435 | |
c1bad961 | 1436 | /* Handle -imacros after -D and -U. */ |
255c10b1 NB |
1437 | for (i = 0; i < deferred_count; i++) |
1438 | { | |
1439 | struct deferred_opt *opt = &deferred_opts[i]; | |
1440 | ||
1441 | if (opt->code == OPT_imacros | |
1442 | && cpp_push_include (parse_in, opt->arg)) | |
9b49a0aa | 1443 | { |
6614fd40 | 1444 | /* Disable push_command_line_include callback for now. */ |
9b49a0aa PB |
1445 | include_cursor = deferred_count + 1; |
1446 | cpp_scan_nooutput (parse_in); | |
1447 | } | |
255c10b1 NB |
1448 | } |
1449 | } | |
1450 | ||
e6ebd07b | 1451 | include_cursor = 0; |
255c10b1 NB |
1452 | push_command_line_include (); |
1453 | } | |
1454 | ||
23345bbb NB |
1455 | /* Give CPP the next file given by -include, if any. */ |
1456 | static void | |
2f6e4e97 | 1457 | push_command_line_include (void) |
23345bbb | 1458 | { |
23345bbb NB |
1459 | while (include_cursor < deferred_count) |
1460 | { | |
1461 | struct deferred_opt *opt = &deferred_opts[include_cursor++]; | |
2f6e4e97 | 1462 | |
31703a61 PB |
1463 | if (! cpp_opts->preprocessed && opt->code == OPT_include |
1464 | && cpp_push_include (parse_in, opt->arg)) | |
23345bbb NB |
1465 | return; |
1466 | } | |
1467 | ||
1468 | if (include_cursor == deferred_count) | |
1469 | { | |
31703a61 | 1470 | include_cursor++; |
23345bbb NB |
1471 | /* -Wunused-macros should only warn about macros defined hereafter. */ |
1472 | cpp_opts->warn_unused_macros = warn_unused_macros; | |
8e9ea4d7 PB |
1473 | /* Restore the line map from <command line>. */ |
1474 | if (! cpp_opts->preprocessed) | |
1475 | cpp_change_file (parse_in, LC_RENAME, main_input_filename); | |
1476 | ||
1477 | /* Set this here so the client can change the option if it wishes, | |
1478 | and after stacking the main file so we don't trace the main file. */ | |
1479 | line_table.trace_includes = cpp_opts->print_include_names; | |
23345bbb NB |
1480 | } |
1481 | } | |
1482 | ||
1483 | /* File change callback. Has to handle -include files. */ | |
1484 | static void | |
2f6e4e97 AJ |
1485 | cb_file_change (cpp_reader *pfile ATTRIBUTE_UNUSED, |
1486 | const struct line_map *new_map) | |
23345bbb NB |
1487 | { |
1488 | if (flag_preprocess_only) | |
1489 | pp_file_change (new_map); | |
1490 | else | |
1491 | fe_file_change (new_map); | |
1492 | ||
31703a61 | 1493 | if (new_map == 0 || (new_map->reason == LC_LEAVE && MAIN_FILE_P (new_map))) |
23345bbb NB |
1494 | push_command_line_include (); |
1495 | } | |
1496 | ||
8e9ea4d7 PB |
1497 | void |
1498 | cb_dir_change (cpp_reader *pfile ATTRIBUTE_UNUSED, const char *dir) | |
1499 | { | |
1500 | if (! set_src_pwd (dir)) | |
1501 | warning ("too late for # directive to set debug directory"); | |
1502 | } | |
1503 | ||
f4ff5a69 NB |
1504 | /* Set the C 89 standard (with 1994 amendments if C94, without GNU |
1505 | extensions if ISO). There is no concept of gnu94. */ | |
1506 | static void | |
2f6e4e97 | 1507 | set_std_c89 (int c94, int iso) |
f4ff5a69 NB |
1508 | { |
1509 | cpp_set_lang (parse_in, c94 ? CLK_STDC94: iso ? CLK_STDC89: CLK_GNUC89); | |
1510 | flag_iso = iso; | |
1511 | flag_no_asm = iso; | |
1512 | flag_no_gnu_keywords = iso; | |
1513 | flag_no_nonansi_builtin = iso; | |
f4ff5a69 NB |
1514 | flag_isoc94 = c94; |
1515 | flag_isoc99 = 0; | |
76c3e73e NB |
1516 | } |
1517 | ||
b4a93904 NB |
1518 | /* Set the C 99 standard (without GNU extensions if ISO). */ |
1519 | static void | |
2f6e4e97 | 1520 | set_std_c99 (int iso) |
b4a93904 NB |
1521 | { |
1522 | cpp_set_lang (parse_in, iso ? CLK_STDC99: CLK_GNUC99); | |
1523 | flag_no_asm = iso; | |
1524 | flag_no_nonansi_builtin = iso; | |
b4a93904 NB |
1525 | flag_iso = iso; |
1526 | flag_isoc99 = 1; | |
1527 | flag_isoc94 = 1; | |
b4a93904 NB |
1528 | } |
1529 | ||
f749a36b NB |
1530 | /* Set the C++ 98 standard (without GNU extensions if ISO). */ |
1531 | static void | |
2f6e4e97 | 1532 | set_std_cxx98 (int iso) |
f749a36b NB |
1533 | { |
1534 | cpp_set_lang (parse_in, iso ? CLK_CXX98: CLK_GNUCXX); | |
1535 | flag_no_gnu_keywords = iso; | |
1536 | flag_no_nonansi_builtin = iso; | |
f749a36b NB |
1537 | flag_iso = iso; |
1538 | } | |
1539 | ||
0b6f2917 NB |
1540 | /* Handle setting implicit to ON. */ |
1541 | static void | |
2f6e4e97 | 1542 | set_Wimplicit (int on) |
0b6f2917 NB |
1543 | { |
1544 | warn_implicit = on; | |
1545 | warn_implicit_int = on; | |
1546 | if (on) | |
1547 | { | |
1548 | if (mesg_implicit_function_declaration != 2) | |
1549 | mesg_implicit_function_declaration = 1; | |
1550 | } | |
1551 | else | |
1552 | mesg_implicit_function_declaration = 0; | |
1553 | } | |
1554 | ||
4b7091eb | 1555 | /* Args to -d specify what to dump. Silently ignore |
05713b80 | 1556 | unrecognized options; they may be aimed at toplev.c. */ |
0b6f2917 | 1557 | static void |
2f6e4e97 | 1558 | handle_OPT_d (const char *arg) |
0b6f2917 | 1559 | { |
4b7091eb NB |
1560 | char c; |
1561 | ||
1562 | while ((c = *arg++) != '\0') | |
1563 | switch (c) | |
1564 | { | |
63973df3 NB |
1565 | case 'M': /* Dump macros only. */ |
1566 | case 'N': /* Dump names. */ | |
1567 | case 'D': /* Dump definitions. */ | |
1568 | flag_dump_macros = c; | |
4b7091eb NB |
1569 | break; |
1570 | ||
1571 | case 'I': | |
63973df3 | 1572 | flag_dump_includes = 1; |
4b7091eb NB |
1573 | break; |
1574 | } | |
0b6f2917 | 1575 | } |