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