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Commit | Line | Data |
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0b6f2917 | 1 | /* C/ObjC/C++ command line option handling. |
a5544970 | 2 | Copyright (C) 2002-2019 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 | |
9dcd6f09 | 9 | Software Foundation; either version 3, or (at your option) any later |
0b6f2917 NB |
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 | |
9dcd6f09 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
0b6f2917 NB |
20 | |
21 | #include "config.h" | |
22 | #include "system.h" | |
4977bab6 | 23 | #include "coretypes.h" |
903f5c23 | 24 | #include "tm.h" |
2adfab87 | 25 | #include "c-target.h" |
0b6f2917 | 26 | #include "c-common.h" |
4d0cdd0c | 27 | #include "memmodel.h" |
2adfab87 AM |
28 | #include "tm_p.h" /* For C_COMMON_OVERRIDE_OPTIONS. */ |
29 | #include "diagnostic.h" | |
0b6f2917 NB |
30 | #include "c-pragma.h" |
31 | #include "flags.h" | |
32 | #include "toplev.h" | |
33 | #include "langhooks.h" | |
18767f65 | 34 | #include "tree-diagnostic.h" /* for virt_loc_aware_diagnostic_finalizer */ |
4b7091eb | 35 | #include "intl.h" |
5793b276 | 36 | #include "cppdefault.h" |
670637ee | 37 | #include "incpath.h" |
23345bbb | 38 | #include "debug.h" /* For debug_hooks. */ |
2772ef3e | 39 | #include "opts.h" |
b826515a | 40 | #include "plugin.h" /* For PLUGIN_INCLUDE_FILE event. */ |
c6e83800 | 41 | #include "mkdeps.h" |
f8a36c78 | 42 | #include "dumpfile.h" |
7365279f | 43 | #include "file-prefix-map.h" /* add_*_prefix_map() */ |
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 | ||
b86f6cd9 NB |
97 | /* Number of deferred options. */ |
98 | static size_t deferred_count; | |
f4ff5a69 | 99 | |
23345bbb NB |
100 | /* Number of deferred options scanned for -include. */ |
101 | static size_t include_cursor; | |
102 | ||
f8a36c78 TJ |
103 | /* Dump files/flags to use during parsing. */ |
104 | static FILE *original_dump_file = NULL; | |
1a817418 | 105 | static dump_flags_t original_dump_flags; |
f8a36c78 | 106 | |
1efcb8c6 JM |
107 | /* Whether any standard preincluded header has been preincluded. */ |
108 | static bool done_preinclude; | |
109 | ||
2f6e4e97 AJ |
110 | static void handle_OPT_d (const char *); |
111 | static void set_std_cxx98 (int); | |
97e3ad20 | 112 | static void set_std_cxx11 (int); |
e4276ba5 | 113 | static void set_std_cxx14 (int); |
7b936140 | 114 | static void set_std_cxx17 (int); |
026a79f7 | 115 | static void set_std_cxx2a (int); |
2f6e4e97 AJ |
116 | static void set_std_c89 (int, int); |
117 | static void set_std_c99 (int); | |
48b0b196 | 118 | static void set_std_c11 (int); |
c76dc9c3 | 119 | static void set_std_c17 (int); |
9f936c86 | 120 | static void set_std_c2x (int); |
2f6e4e97 AJ |
121 | static void check_deps_environment_vars (void); |
122 | static void handle_deferred_opts (void); | |
123 | static void sanitize_cpp_opts (void); | |
b90c9338 | 124 | static void add_prefixed_path (const char *, incpath_kind); |
2f6e4e97 | 125 | static void push_command_line_include (void); |
0e50b624 | 126 | static void cb_file_change (cpp_reader *, const line_map_ordinary *); |
8e9ea4d7 | 127 | static void cb_dir_change (cpp_reader *, const char *); |
c98cd5bf | 128 | static void c_finish_options (void); |
460bd0e3 NB |
129 | |
130 | #ifndef STDC_0_IN_SYSTEM_HEADERS | |
131 | #define STDC_0_IN_SYSTEM_HEADERS 0 | |
132 | #endif | |
0b6f2917 | 133 | |
2772ef3e | 134 | /* Holds switches parsed by c_common_handle_option (), but whose |
95bd1dd7 | 135 | handling is deferred to c_common_post_options (). */ |
2f6e4e97 | 136 | static void defer_opt (enum opt_code, const char *); |
f4ff5a69 NB |
137 | static struct deferred_opt |
138 | { | |
139 | enum opt_code code; | |
140 | const char *arg; | |
141 | } *deferred_opts; | |
142 | ||
3734d960 | 143 | |
c5fa0890 | 144 | extern const unsigned int |
3734d960 MLI |
145 | c_family_lang_mask = (CL_C | CL_CXX | CL_ObjC | CL_ObjCXX); |
146 | ||
f4ff5a69 NB |
147 | /* Defer option CODE with argument ARG. */ |
148 | static void | |
2f6e4e97 | 149 | defer_opt (enum opt_code code, const char *arg) |
f4ff5a69 | 150 | { |
f4ff5a69 NB |
151 | deferred_opts[deferred_count].code = code; |
152 | deferred_opts[deferred_count].arg = arg; | |
153 | deferred_count++; | |
154 | } | |
155 | ||
7a9bf9a4 | 156 | /* Return language mask for option parsing. */ |
b86f6cd9 | 157 | unsigned int |
7a9bf9a4 | 158 | c_common_option_lang_mask (void) |
0b6f2917 | 159 | { |
b86f6cd9 | 160 | static const unsigned int lang_flags[] = {CL_C, CL_ObjC, CL_CXX, CL_ObjCXX}; |
37fa72e9 | 161 | |
7a9bf9a4 JM |
162 | return lang_flags[c_language]; |
163 | } | |
164 | ||
18767f65 MLI |
165 | /* Diagnostic finalizer for C/C++/Objective-C/Objective-C++. */ |
166 | static void | |
167 | c_diagnostic_finalizer (diagnostic_context *context, | |
478dd60d DM |
168 | diagnostic_info *diagnostic, |
169 | diagnostic_t) | |
18767f65 | 170 | { |
cc015f3a | 171 | diagnostic_show_locus (context, diagnostic->richloc, diagnostic->kind); |
18767f65 MLI |
172 | /* By default print macro expansion contexts in the diagnostic |
173 | finalizer -- for tokens resulting from macro expansion. */ | |
174 | virt_loc_aware_diagnostic_finalizer (context, diagnostic); | |
175 | pp_destroy_prefix (context->printer); | |
01e1dea3 | 176 | pp_flush (context->printer); |
18767f65 MLI |
177 | } |
178 | ||
d723bb7c | 179 | /* Common default settings for diagnostics. */ |
7a9bf9a4 | 180 | void |
d723bb7c | 181 | c_common_diagnostics_set_defaults (diagnostic_context *context) |
7a9bf9a4 | 182 | { |
18767f65 | 183 | diagnostic_finalizer (context) = c_diagnostic_finalizer; |
7a9bf9a4 JM |
184 | context->opt_permissive = OPT_fpermissive; |
185 | } | |
186 | ||
187 | /* Whether options from all C-family languages should be accepted | |
188 | quietly. */ | |
189 | static bool accept_all_c_family_options = false; | |
190 | ||
191 | /* Return whether to complain about a wrong-language option. */ | |
192 | bool | |
193 | c_common_complain_wrong_lang_p (const struct cl_option *option) | |
194 | { | |
195 | if (accept_all_c_family_options | |
196 | && (option->flags & c_family_lang_mask)) | |
197 | return false; | |
198 | ||
199 | return true; | |
200 | } | |
201 | ||
a75bfaa6 JM |
202 | /* Initialize options structure OPTS. */ |
203 | void | |
204 | c_common_init_options_struct (struct gcc_options *opts) | |
205 | { | |
206 | opts->x_flag_exceptions = c_dialect_cxx (); | |
207 | opts->x_warn_pointer_arith = c_dialect_cxx (); | |
208 | opts->x_warn_write_strings = c_dialect_cxx (); | |
209 | opts->x_flag_warn_unused_result = true; | |
210 | ||
211 | /* By default, C99-like requirements for complex multiply and divide. */ | |
212 | opts->x_flag_complex_method = 2; | |
213 | } | |
214 | ||
7a9bf9a4 JM |
215 | /* Common initialization before calling option handlers. */ |
216 | void | |
217 | c_common_init_options (unsigned int decoded_options_count, | |
218 | struct cl_decoded_option *decoded_options) | |
219 | { | |
220 | unsigned int i; | |
221 | struct cpp_callbacks *cb; | |
5f0f4a3b | 222 | |
88fa5555 DM |
223 | g_string_concat_db |
224 | = new (ggc_alloc <string_concat_db> ()) string_concat_db (); | |
225 | ||
37fa72e9 | 226 | parse_in = cpp_create_reader (c_dialect_cxx () ? CLK_GNUCXX: CLK_GNUC89, |
5ffeb913 | 227 | ident_hash, line_table); |
148e4216 | 228 | cb = cpp_get_callbacks (parse_in); |
c24300ba | 229 | cb->diagnostic = c_cpp_diagnostic; |
37fa72e9 | 230 | |
18bdccaa | 231 | cpp_opts = cpp_get_options (parse_in); |
b1822ccc | 232 | cpp_opts->dollars_in_ident = DOLLARS_IN_IDENTIFIERS; |
37fa72e9 | 233 | cpp_opts->objc = c_dialect_objc (); |
78b8811a HPN |
234 | |
235 | /* Reset to avoid warnings on internal definitions. We set it just | |
236 | before passing on command-line options to cpplib. */ | |
237 | cpp_opts->warn_dollars = 0; | |
238 | ||
7a9bf9a4 | 239 | deferred_opts = XNEWVEC (struct deferred_opt, decoded_options_count); |
33de9573 | 240 | |
afd85c1a | 241 | if (c_language == clk_c) |
33de9573 | 242 | { |
c76dc9c3 JM |
243 | /* The default for C is gnu17. */ |
244 | set_std_c17 (false /* ISO */); | |
d73326ca | 245 | |
afd85c1a RS |
246 | /* If preprocessing assembly language, accept any of the C-family |
247 | front end options since the driver may pass them through. */ | |
7a9bf9a4 JM |
248 | for (i = 1; i < decoded_options_count; i++) |
249 | if (decoded_options[i].opt_index == OPT_lang_asm) | |
afd85c1a | 250 | { |
7a9bf9a4 | 251 | accept_all_c_family_options = true; |
afd85c1a RS |
252 | break; |
253 | } | |
33de9573 | 254 | } |
ebedc9a3 | 255 | |
268be88c BE |
256 | /* Set C++ standard to C++14 if not specified on the command line. */ |
257 | if (c_dialect_cxx ()) | |
258 | set_std_cxx14 (/*ISO*/false); | |
259 | ||
ebedc9a3 | 260 | global_dc->colorize_source_p = true; |
0b6f2917 NB |
261 | } |
262 | ||
b20d9f0c | 263 | /* Handle switch SCODE with argument ARG. VALUE is true, unless no- |
5f20c657 JM |
264 | form of an -f or -W option was given. Returns false if the switch was |
265 | invalid, true if valid. Use HANDLERS in recursive handle_option calls. */ | |
266 | bool | |
00abf86c | 267 | c_common_handle_option (size_t scode, const char *arg, HOST_WIDE_INT value, |
a4d8c676 JM |
268 | int kind, location_t loc, |
269 | const struct cl_option_handlers *handlers) | |
0b6f2917 | 270 | { |
2772ef3e NB |
271 | const struct cl_option *option = &cl_options[scode]; |
272 | enum opt_code code = (enum opt_code) scode; | |
5f20c657 | 273 | bool result = true; |
2772ef3e | 274 | |
69723be2 SB |
275 | /* Prevent resetting the language standard to a C dialect when the driver |
276 | has already determined that we're looking at assembler input. */ | |
277 | bool preprocessing_asm_p = (cpp_get_options (parse_in)->lang == CLK_ASM); | |
b8698a0f | 278 | |
fef3106c | 279 | switch (code) |
0b6f2917 | 280 | { |
2772ef3e | 281 | default: |
3734d960 | 282 | if (cl_options[code].flags & c_family_lang_mask) |
1f1d5130 MS |
283 | { |
284 | if ((option->flags & CL_TARGET) | |
285 | && ! targetcm.handle_c_option (scode, arg, value)) | |
5f20c657 | 286 | result = false; |
1f1d5130 MS |
287 | break; |
288 | } | |
5f20c657 | 289 | result = false; |
33de9573 | 290 | break; |
0b6f2917 | 291 | |
fef3106c | 292 | case OPT__output_pch_: |
17211ab5 GK |
293 | pch_file = arg; |
294 | break; | |
295 | ||
c1bad961 NB |
296 | case OPT_A: |
297 | defer_opt (code, arg); | |
298 | break; | |
299 | ||
4b7091eb NB |
300 | case OPT_C: |
301 | cpp_opts->discard_comments = 0; | |
302 | break; | |
303 | ||
304 | case OPT_CC: | |
305 | cpp_opts->discard_comments = 0; | |
306 | cpp_opts->discard_comments_in_macro_exp = 0; | |
307 | break; | |
308 | ||
c1bad961 NB |
309 | case OPT_D: |
310 | defer_opt (code, arg); | |
311 | break; | |
312 | ||
4b7091eb NB |
313 | case OPT_H: |
314 | cpp_opts->print_include_names = 1; | |
315 | break; | |
316 | ||
94d1613b MS |
317 | case OPT_F: |
318 | TARGET_OPTF (xstrdup (arg)); | |
319 | break; | |
320 | ||
5793b276 NB |
321 | case OPT_I: |
322 | if (strcmp (arg, "-")) | |
b90c9338 | 323 | add_path (xstrdup (arg), INC_BRACKET, 0, true); |
5793b276 NB |
324 | else |
325 | { | |
326 | if (quote_chain_split) | |
1fe61adf | 327 | error ("%<-I-%> specified twice"); |
5793b276 NB |
328 | quote_chain_split = true; |
329 | split_quote_chain (); | |
a3f9f006 ML |
330 | inform (input_location, "obsolete option %<-I-%> used, " |
331 | "please use %<-iquote%> instead"); | |
5793b276 NB |
332 | } |
333 | break; | |
334 | ||
f4ff5a69 NB |
335 | case OPT_M: |
336 | case OPT_MM: | |
337 | /* When doing dependencies with -M or -MM, suppress normal | |
338 | preprocessed output, but still do -dM etc. as software | |
339 | depends on this. Preprocessed output does occur if -MD, -MMD | |
340 | or environment var dependency generation is used. */ | |
341 | cpp_opts->deps.style = (code == OPT_M ? DEPS_SYSTEM: DEPS_USER); | |
63973df3 | 342 | flag_no_output = 1; |
f4ff5a69 NB |
343 | break; |
344 | ||
c878765b JM |
345 | case OPT_MD: |
346 | case OPT_MMD: | |
347 | cpp_opts->deps.style = (code == OPT_MD ? DEPS_SYSTEM: DEPS_USER); | |
74dc6a11 | 348 | cpp_opts->deps.need_preprocessor_output = true; |
f4ff5a69 NB |
349 | deps_file = arg; |
350 | break; | |
351 | ||
352 | case OPT_MF: | |
353 | deps_seen = true; | |
354 | deps_file = arg; | |
355 | break; | |
356 | ||
357 | case OPT_MG: | |
358 | deps_seen = true; | |
359 | cpp_opts->deps.missing_files = true; | |
360 | break; | |
361 | ||
362 | case OPT_MP: | |
363 | deps_seen = true; | |
364 | cpp_opts->deps.phony_targets = true; | |
365 | break; | |
366 | ||
367 | case OPT_MQ: | |
368 | case OPT_MT: | |
369 | deps_seen = true; | |
370 | defer_opt (code, arg); | |
371 | break; | |
372 | ||
4b7091eb | 373 | case OPT_P: |
63973df3 | 374 | flag_no_line_commands = 1; |
4b7091eb NB |
375 | break; |
376 | ||
c1bad961 NB |
377 | case OPT_U: |
378 | defer_opt (code, arg); | |
379 | break; | |
380 | ||
0b6f2917 | 381 | case OPT_Wall: |
65d4f2cd | 382 | /* ??? Don't add new options here. Use LangEnabledBy in c.opt. */ |
18bdccaa | 383 | |
7b086b11 | 384 | cpp_opts->warn_num_sign_change = value; |
0b6f2917 NB |
385 | break; |
386 | ||
0b6f2917 NB |
387 | case OPT_Wunknown_pragmas: |
388 | /* Set to greater than 1, so that even unknown pragmas in | |
2f6e4e97 | 389 | system headers will be warned about. */ |
34a180a6 | 390 | /* ??? There is no way to handle this automatically for now. */ |
7b086b11 | 391 | warn_unknown_pragmas = value * 2; |
0b6f2917 NB |
392 | break; |
393 | ||
f749a36b | 394 | case OPT_ansi: |
37fa72e9 | 395 | if (!c_dialect_cxx ()) |
f749a36b NB |
396 | set_std_c89 (false, true); |
397 | else | |
398 | set_std_cxx98 (true); | |
399 | break; | |
0b6f2917 | 400 | |
4b7091eb NB |
401 | case OPT_d: |
402 | handle_OPT_d (arg); | |
403 | break; | |
404 | ||
62984918 JM |
405 | case OPT_Wabi_: |
406 | warn_abi = true; | |
407 | if (value == 1) | |
408 | { | |
409 | warning (0, "%<-Wabi=1%> is not supported, using =2"); | |
410 | value = 2; | |
411 | } | |
a75f1574 | 412 | warn_abi_version = value; |
62984918 JM |
413 | break; |
414 | ||
5dc99c46 SB |
415 | case OPT_fcanonical_system_headers: |
416 | cpp_opts->canonical_system_headers = value; | |
417 | break; | |
418 | ||
0b6f2917 | 419 | case OPT_fcond_mismatch: |
37fa72e9 | 420 | if (!c_dialect_cxx ()) |
0b6f2917 | 421 | { |
7b086b11 | 422 | flag_cond_mismatch = value; |
0b6f2917 NB |
423 | break; |
424 | } | |
d4ee4d25 | 425 | warning (0, "switch %qs is no longer supported", option->opt_text); |
0b6f2917 NB |
426 | break; |
427 | ||
0b6f2917 | 428 | case OPT_fbuiltin_: |
7b086b11 | 429 | if (value) |
5f20c657 | 430 | result = false; |
4b7091eb NB |
431 | else |
432 | disable_builtin_function (arg); | |
0b6f2917 NB |
433 | break; |
434 | ||
ccfc4c91 | 435 | case OPT_fdirectives_only: |
2710d6d7 | 436 | cpp_opts->directives_only = value; |
ccfc4c91 OW |
437 | break; |
438 | ||
0b6f2917 | 439 | case OPT_fdollars_in_identifiers: |
7b086b11 | 440 | cpp_opts->dollars_in_ident = value; |
0b6f2917 NB |
441 | break; |
442 | ||
7365279f BK |
443 | case OPT_fmacro_prefix_map_: |
444 | add_macro_prefix_map (arg); | |
445 | break; | |
446 | ||
0b6f2917 | 447 | case OPT_ffreestanding: |
7b086b11 | 448 | value = !value; |
191816a3 | 449 | /* Fall through. */ |
0b6f2917 | 450 | case OPT_fhosted: |
7b086b11 NB |
451 | flag_hosted = value; |
452 | flag_no_builtin = !value; | |
0b6f2917 NB |
453 | break; |
454 | ||
fef3106c | 455 | case OPT_fconstant_string_class_: |
4b7091eb | 456 | constant_string_class_name = arg; |
0b6f2917 NB |
457 | break; |
458 | ||
af15a2fe JM |
459 | case OPT_fextended_identifiers: |
460 | cpp_opts->extended_identifiers = value; | |
461 | break; | |
462 | ||
18bdccaa | 463 | case OPT_foperator_names: |
7b086b11 | 464 | cpp_opts->operator_names = value; |
18bdccaa NB |
465 | break; |
466 | ||
17211ab5 | 467 | case OPT_fpch_deps: |
7b086b11 | 468 | cpp_opts->restore_pch_deps = value; |
17211ab5 GK |
469 | break; |
470 | ||
c0d578e6 GK |
471 | case OPT_fpch_preprocess: |
472 | flag_pch_preprocess = value; | |
473 | break; | |
474 | ||
0b6f2917 | 475 | case OPT_fpermissive: |
0641fa97 RG |
476 | flag_permissive = value; |
477 | global_dc->permissive = value; | |
0b6f2917 NB |
478 | break; |
479 | ||
18bdccaa | 480 | case OPT_fpreprocessed: |
7b086b11 | 481 | cpp_opts->preprocessed = value; |
18bdccaa NB |
482 | break; |
483 | ||
847e697a TT |
484 | case OPT_fdebug_cpp: |
485 | cpp_opts->debug = 1; | |
486 | break; | |
487 | ||
92582b75 TT |
488 | case OPT_ftrack_macro_expansion: |
489 | if (value) | |
490 | value = 2; | |
491 | /* Fall Through. */ | |
492 | ||
493 | case OPT_ftrack_macro_expansion_: | |
494 | if (arg && *arg != '\0') | |
495 | cpp_opts->track_macro_expansion = value; | |
496 | else | |
497 | cpp_opts->track_macro_expansion = 2; | |
498 | break; | |
499 | ||
0b6f2917 | 500 | case OPT_frepo: |
7b086b11 NB |
501 | flag_use_repository = value; |
502 | if (value) | |
0b6f2917 NB |
503 | flag_implicit_templates = 0; |
504 | break; | |
505 | ||
fef3106c | 506 | case OPT_ftabstop_: |
18bdccaa | 507 | /* It is documented that we silently ignore silly values. */ |
7b086b11 NB |
508 | if (value >= 1 && value <= 100) |
509 | cpp_opts->tabstop = value; | |
18bdccaa NB |
510 | break; |
511 | ||
e6cc3a24 ZW |
512 | case OPT_fexec_charset_: |
513 | cpp_opts->narrow_charset = arg; | |
514 | break; | |
515 | ||
516 | case OPT_fwide_exec_charset_: | |
517 | cpp_opts->wide_charset = arg; | |
518 | break; | |
519 | ||
16dd5cfe EC |
520 | case OPT_finput_charset_: |
521 | cpp_opts->input_charset = arg; | |
522 | break; | |
523 | ||
fef3106c | 524 | case OPT_ftemplate_depth_: |
7b086b11 | 525 | max_tinst_depth = value; |
0b6f2917 NB |
526 | break; |
527 | ||
d7afec4b ND |
528 | case OPT_fvisibility_inlines_hidden: |
529 | visibility_options.inlines_hidden = value; | |
530 | break; | |
0b6f2917 | 531 | |
39ef6592 | 532 | case OPT_femit_struct_debug_baseonly: |
299404a1 | 533 | set_struct_debug_option (&global_options, loc, "base"); |
39ef6592 LC |
534 | break; |
535 | ||
536 | case OPT_femit_struct_debug_reduced: | |
299404a1 | 537 | set_struct_debug_option (&global_options, loc, |
69ccdddb | 538 | "dir:ord:sys,dir:gen:any,ind:base"); |
39ef6592 LC |
539 | break; |
540 | ||
541 | case OPT_femit_struct_debug_detailed_: | |
299404a1 | 542 | set_struct_debug_option (&global_options, loc, arg); |
39ef6592 LC |
543 | break; |
544 | ||
a4a0016d ESR |
545 | case OPT_fext_numeric_literals: |
546 | cpp_opts->ext_numeric_literals = value; | |
547 | break; | |
548 | ||
5793b276 | 549 | case OPT_idirafter: |
b90c9338 | 550 | add_path (xstrdup (arg), INC_AFTER, 0, true); |
5793b276 NB |
551 | break; |
552 | ||
255c10b1 | 553 | case OPT_imacros: |
23345bbb NB |
554 | case OPT_include: |
555 | defer_opt (code, arg); | |
556 | break; | |
557 | ||
2b6dd222 JM |
558 | case OPT_imultilib: |
559 | imultilib = arg; | |
560 | break; | |
561 | ||
5793b276 NB |
562 | case OPT_iprefix: |
563 | iprefix = arg; | |
564 | break; | |
565 | ||
4bed3787 | 566 | case OPT_iquote: |
b90c9338 | 567 | add_path (xstrdup (arg), INC_QUOTE, 0, true); |
4bed3787 MS |
568 | break; |
569 | ||
5793b276 NB |
570 | case OPT_isysroot: |
571 | sysroot = arg; | |
572 | break; | |
573 | ||
574 | case OPT_isystem: | |
b90c9338 | 575 | add_path (xstrdup (arg), INC_SYSTEM, 0, true); |
5793b276 NB |
576 | break; |
577 | ||
578 | case OPT_iwithprefix: | |
b90c9338 | 579 | add_prefixed_path (arg, INC_SYSTEM); |
5793b276 NB |
580 | break; |
581 | ||
582 | case OPT_iwithprefixbefore: | |
b90c9338 | 583 | add_prefixed_path (arg, INC_BRACKET); |
5793b276 NB |
584 | break; |
585 | ||
f749a36b NB |
586 | case OPT_lang_asm: |
587 | cpp_set_lang (parse_in, CLK_ASM); | |
170ea7b9 | 588 | cpp_opts->dollars_in_ident = false; |
f749a36b NB |
589 | break; |
590 | ||
4b7091eb | 591 | case OPT_nostdinc: |
5793b276 | 592 | std_inc = false; |
4b7091eb NB |
593 | break; |
594 | ||
fef3106c | 595 | case OPT_nostdinc__: |
5793b276 | 596 | std_cxx_inc = false; |
4b7091eb NB |
597 | break; |
598 | ||
b4a93904 | 599 | case OPT_o: |
76c3e73e NB |
600 | if (!out_fname) |
601 | out_fname = arg; | |
b4a93904 | 602 | else |
f75d3e11 | 603 | error ("output filename specified twice"); |
b4a93904 NB |
604 | break; |
605 | ||
0b6f2917 NB |
606 | case OPT_print_objc_runtime_info: |
607 | print_struct_values = 1; | |
608 | break; | |
609 | ||
b4a93904 NB |
610 | case OPT_remap: |
611 | cpp_opts->remap = 1; | |
0b6f2917 NB |
612 | break; |
613 | ||
fef3106c NB |
614 | case OPT_std_c__98: |
615 | case OPT_std_gnu__98: | |
69723be2 SB |
616 | if (!preprocessing_asm_p) |
617 | set_std_cxx98 (code == OPT_std_c__98 /* ISO */); | |
0b6f2917 NB |
618 | break; |
619 | ||
97e3ad20 JM |
620 | case OPT_std_c__11: |
621 | case OPT_std_gnu__11: | |
966541e3 | 622 | if (!preprocessing_asm_p) |
dcb466ec | 623 | set_std_cxx11 (code == OPT_std_c__11 /* ISO */); |
966541e3 DG |
624 | break; |
625 | ||
028aee17 JM |
626 | case OPT_std_c__14: |
627 | case OPT_std_gnu__14: | |
552b8185 | 628 | if (!preprocessing_asm_p) |
dcb466ec | 629 | set_std_cxx14 (code == OPT_std_c__14 /* ISO */); |
552b8185 JM |
630 | break; |
631 | ||
7b936140 JJ |
632 | case OPT_std_c__17: |
633 | case OPT_std_gnu__17: | |
da73100b | 634 | if (!preprocessing_asm_p) |
7b936140 | 635 | set_std_cxx17 (code == OPT_std_c__17 /* ISO */); |
da73100b JM |
636 | break; |
637 | ||
026a79f7 AS |
638 | case OPT_std_c__2a: |
639 | case OPT_std_gnu__2a: | |
640 | if (!preprocessing_asm_p) | |
641 | set_std_cxx2a (code == OPT_std_c__2a /* ISO */); | |
642 | break; | |
643 | ||
7e1542b9 | 644 | case OPT_std_c90: |
b4a93904 | 645 | case OPT_std_iso9899_199409: |
69723be2 SB |
646 | if (!preprocessing_asm_p) |
647 | set_std_c89 (code == OPT_std_iso9899_199409 /* c94 */, true /* ISO */); | |
f749a36b NB |
648 | break; |
649 | ||
7e1542b9 | 650 | case OPT_std_gnu90: |
69723be2 SB |
651 | if (!preprocessing_asm_p) |
652 | set_std_c89 (false /* c94 */, false /* ISO */); | |
0b6f2917 NB |
653 | break; |
654 | ||
655 | case OPT_std_c99: | |
69723be2 SB |
656 | if (!preprocessing_asm_p) |
657 | set_std_c99 (true /* ISO */); | |
0b6f2917 NB |
658 | break; |
659 | ||
0b6f2917 | 660 | case OPT_std_gnu99: |
69723be2 SB |
661 | if (!preprocessing_asm_p) |
662 | set_std_c99 (false /* ISO */); | |
0b6f2917 NB |
663 | break; |
664 | ||
48b0b196 | 665 | case OPT_std_c11: |
2778d766 | 666 | if (!preprocessing_asm_p) |
48b0b196 | 667 | set_std_c11 (true /* ISO */); |
2778d766 JM |
668 | break; |
669 | ||
48b0b196 | 670 | case OPT_std_gnu11: |
2778d766 | 671 | if (!preprocessing_asm_p) |
48b0b196 | 672 | set_std_c11 (false /* ISO */); |
2778d766 JM |
673 | break; |
674 | ||
c76dc9c3 JM |
675 | case OPT_std_c17: |
676 | if (!preprocessing_asm_p) | |
677 | set_std_c17 (true /* ISO */); | |
678 | break; | |
679 | ||
680 | case OPT_std_gnu17: | |
681 | if (!preprocessing_asm_p) | |
682 | set_std_c17 (false /* ISO */); | |
683 | break; | |
684 | ||
9f936c86 JM |
685 | case OPT_std_c2x: |
686 | if (!preprocessing_asm_p) | |
687 | set_std_c2x (true /* ISO */); | |
688 | break; | |
689 | ||
690 | case OPT_std_gnu2x: | |
691 | if (!preprocessing_asm_p) | |
692 | set_std_c2x (false /* ISO */); | |
693 | break; | |
694 | ||
4b7091eb NB |
695 | case OPT_trigraphs: |
696 | cpp_opts->trigraphs = 1; | |
697 | break; | |
698 | ||
699 | case OPT_traditional_cpp: | |
700 | cpp_opts->traditional = 1; | |
701 | break; | |
702 | ||
4b7091eb | 703 | case OPT_v: |
5793b276 | 704 | verbose = true; |
4b7091eb NB |
705 | break; |
706 | } | |
0b6f2917 | 707 | |
f2bc201f MLI |
708 | switch (c_language) |
709 | { | |
710 | case clk_c: | |
711 | C_handle_option_auto (&global_options, &global_options_set, | |
712 | scode, arg, value, | |
713 | c_family_lang_mask, kind, | |
714 | loc, handlers, global_dc); | |
715 | break; | |
716 | ||
717 | case clk_objc: | |
718 | ObjC_handle_option_auto (&global_options, &global_options_set, | |
719 | scode, arg, value, | |
720 | c_family_lang_mask, kind, | |
721 | loc, handlers, global_dc); | |
722 | break; | |
723 | ||
724 | case clk_cxx: | |
725 | CXX_handle_option_auto (&global_options, &global_options_set, | |
726 | scode, arg, value, | |
727 | c_family_lang_mask, kind, | |
728 | loc, handlers, global_dc); | |
729 | break; | |
730 | ||
731 | case clk_objcxx: | |
732 | ObjCXX_handle_option_auto (&global_options, &global_options_set, | |
733 | scode, arg, value, | |
734 | c_family_lang_mask, kind, | |
735 | loc, handlers, global_dc); | |
736 | break; | |
737 | ||
738 | default: | |
739 | gcc_unreachable (); | |
740 | } | |
43f9a13c MLI |
741 | |
742 | cpp_handle_option_auto (&global_options, scode, cpp_opts); | |
0b6f2917 NB |
743 | return result; |
744 | } | |
745 | ||
acce4e77 JM |
746 | /* Default implementation of TARGET_HANDLE_C_OPTION. */ |
747 | ||
748 | bool | |
749 | default_handle_c_option (size_t code ATTRIBUTE_UNUSED, | |
750 | const char *arg ATTRIBUTE_UNUSED, | |
751 | int value ATTRIBUTE_UNUSED) | |
752 | { | |
753 | return false; | |
754 | } | |
755 | ||
0b6f2917 NB |
756 | /* Post-switch processing. */ |
757 | bool | |
8e9ea4d7 | 758 | c_common_post_options (const char **pfilename) |
0b6f2917 | 759 | { |
8e9ea4d7 PB |
760 | struct cpp_callbacks *cb; |
761 | ||
460bd0e3 | 762 | /* Canonicalize the input and output filenames. */ |
d1bd0ded GK |
763 | if (in_fnames == NULL) |
764 | { | |
5d038c4c | 765 | in_fnames = XNEWVEC (const char *, 1); |
d1bd0ded GK |
766 | in_fnames[0] = ""; |
767 | } | |
768 | else if (strcmp (in_fnames[0], "-") == 0) | |
cd445b54 ML |
769 | { |
770 | if (pch_file) | |
771 | error ("cannot use %<-%> as input filename for a precompiled header"); | |
772 | ||
773 | in_fnames[0] = ""; | |
774 | } | |
460bd0e3 | 775 | |
76c3e73e NB |
776 | if (out_fname == NULL || !strcmp (out_fname, "-")) |
777 | out_fname = ""; | |
778 | ||
cd79e210 | 779 | if (cpp_opts->deps.style == DEPS_NONE) |
76c3e73e NB |
780 | check_deps_environment_vars (); |
781 | ||
f4ff5a69 | 782 | handle_deferred_opts (); |
76c3e73e | 783 | |
f4ff5a69 | 784 | sanitize_cpp_opts (); |
460bd0e3 | 785 | |
2b6dd222 | 786 | register_include_chains (parse_in, sysroot, iprefix, imultilib, |
37fa72e9 | 787 | std_inc, std_cxx_inc && c_dialect_cxx (), verbose); |
5793b276 | 788 | |
c7b5e395 GK |
789 | #ifdef C_COMMON_OVERRIDE_OPTIONS |
790 | /* Some machines may reject certain combinations of C | |
791 | language-specific options. */ | |
792 | C_COMMON_OVERRIDE_OPTIONS; | |
793 | #endif | |
794 | ||
8ce94e44 JM |
795 | /* Excess precision other than "fast" requires front-end |
796 | support. */ | |
797 | if (c_dialect_cxx ()) | |
798 | { | |
75304c87 | 799 | if (flag_excess_precision_cmdline == EXCESS_PRECISION_STANDARD) |
a3f9f006 | 800 | sorry ("%<-fexcess-precision=standard%> for C++"); |
8ce94e44 JM |
801 | flag_excess_precision_cmdline = EXCESS_PRECISION_FAST; |
802 | } | |
803 | else if (flag_excess_precision_cmdline == EXCESS_PRECISION_DEFAULT) | |
804 | flag_excess_precision_cmdline = (flag_iso | |
805 | ? EXCESS_PRECISION_STANDARD | |
806 | : EXCESS_PRECISION_FAST); | |
807 | ||
6dbe0958 JM |
808 | /* ISO C restricts floating-point expression contraction to within |
809 | source-language expressions (-ffp-contract=on, currently an alias | |
810 | for -ffp-contract=off). */ | |
811 | if (flag_iso | |
812 | && !c_dialect_cxx () | |
813 | && (global_options_set.x_flag_fp_contract_mode | |
75b107f5 IB |
814 | == (enum fp_contract_mode) 0) |
815 | && flag_unsafe_math_optimizations == 0) | |
6dbe0958 JM |
816 | flag_fp_contract_mode = FP_CONTRACT_OFF; |
817 | ||
04f0fcf7 JG |
818 | /* If we are compiling C, and we are outside of a standards mode, |
819 | we can permit the new values from ISO/IEC TS 18661-3 for | |
820 | FLT_EVAL_METHOD. Otherwise, we must restrict the possible values to | |
821 | the set specified in ISO C99/C11. */ | |
822 | if (!flag_iso | |
823 | && !c_dialect_cxx () | |
824 | && (global_options_set.x_flag_permitted_flt_eval_methods | |
825 | == PERMITTED_FLT_EVAL_METHODS_DEFAULT)) | |
826 | flag_permitted_flt_eval_methods = PERMITTED_FLT_EVAL_METHODS_TS_18661; | |
827 | else | |
828 | flag_permitted_flt_eval_methods = PERMITTED_FLT_EVAL_METHODS_C11; | |
829 | ||
da1c7394 ILT |
830 | /* By default we use C99 inline semantics in GNU99 or C99 mode. C99 |
831 | inline semantics are not supported in GNU89 or C89 mode. */ | |
832 | if (flag_gnu89_inline == -1) | |
833 | flag_gnu89_inline = !flag_isoc99; | |
834 | else if (!flag_gnu89_inline && !flag_isoc99) | |
a3f9f006 | 835 | error ("%<-fno-gnu89-inline%> is only supported in GNU99 or C99 mode"); |
da1c7394 | 836 | |
093c7153 RH |
837 | /* Default to ObjC sjlj exception handling if NeXT runtime. */ |
838 | if (flag_objc_sjlj_exceptions < 0) | |
839 | flag_objc_sjlj_exceptions = flag_next_runtime; | |
840 | if (flag_objc_exceptions && !flag_objc_sjlj_exceptions) | |
841 | flag_exceptions = 1; | |
842 | ||
b15458be RB |
843 | /* If -ffreestanding, -fno-hosted or -fno-builtin then disable |
844 | pattern recognition. */ | |
845 | if (!global_options_set.x_flag_tree_loop_distribute_patterns | |
846 | && flag_no_builtin) | |
847 | flag_tree_loop_distribute_patterns = 0; | |
848 | ||
c1771a20 | 849 | /* -Woverlength-strings is off by default, but is enabled by -Wpedantic. |
89a42ac8 ZW |
850 | It is never enabled in C++, as the minimum limit is not normative |
851 | in that standard. */ | |
34a180a6 | 852 | if (c_dialect_cxx ()) |
89a42ac8 ZW |
853 | warn_overlength_strings = 0; |
854 | ||
4003301d MLI |
855 | /* Wmain is enabled by default in C++ but not in C. */ |
856 | /* Wmain is disabled by default for -ffreestanding (!flag_hosted), | |
34a180a6 MLI |
857 | even if -Wall or -Wpedantic was given (warn_main will be 2 if set |
858 | by -Wall, 1 if set by -Wmain). */ | |
4003301d MLI |
859 | if (warn_main == -1) |
860 | warn_main = (c_dialect_cxx () && flag_hosted) ? 1 : 0; | |
861 | else if (warn_main == 2) | |
862 | warn_main = flag_hosted ? 1 : 0; | |
863 | ||
34a180a6 MLI |
864 | /* In C, -Wall and -Wc++-compat enable -Wenum-compare; if it has not |
865 | yet been set, it is disabled by default. In C++, it is enabled | |
866 | by default. */ | |
6866c6e8 ILT |
867 | if (warn_enum_compare == -1) |
868 | warn_enum_compare = c_dialect_cxx () ? 1 : 0; | |
869 | ||
bee6fa6d AN |
870 | /* -Wpacked-bitfield-compat is on by default for the C languages. The |
871 | warning is issued in stor-layout.c which is not part of the front-end so | |
872 | we need to selectively turn it on here. */ | |
873 | if (warn_packed_bitfield_compat == -1) | |
874 | warn_packed_bitfield_compat = 1; | |
9b439fe1 | 875 | |
0b6f2917 NB |
876 | /* Special format checking options don't work without -Wformat; warn if |
877 | they are used. */ | |
44c21c7f DD |
878 | if (!warn_format) |
879 | { | |
880 | warning (OPT_Wformat_y2k, | |
a3f9f006 | 881 | "%<-Wformat-y2k%> ignored without %<-Wformat%>"); |
44c21c7f | 882 | warning (OPT_Wformat_extra_args, |
a3f9f006 | 883 | "%<-Wformat-extra-args%> ignored without %<-Wformat%>"); |
44c21c7f | 884 | warning (OPT_Wformat_zero_length, |
a3f9f006 | 885 | "%<-Wformat-zero-length%> ignored without %<-Wformat%>"); |
44c21c7f | 886 | warning (OPT_Wformat_nonliteral, |
a3f9f006 | 887 | "%<-Wformat-nonliteral%> ignored without %<-Wformat%>"); |
ca178f85 | 888 | warning (OPT_Wformat_contains_nul, |
a3f9f006 | 889 | "%<-Wformat-contains-nul%> ignored without %<-Wformat%>"); |
44c21c7f | 890 | warning (OPT_Wformat_security, |
a3f9f006 | 891 | "%<-Wformat-security%> ignored without %<-Wformat%>"); |
44c21c7f | 892 | } |
0b6f2917 | 893 | |
dc90f45b | 894 | /* -Wimplicit-function-declaration is enabled by default for C99. */ |
b8698a0f | 895 | if (warn_implicit_function_declaration == -1) |
dc90f45b | 896 | warn_implicit_function_declaration = flag_isoc99; |
c7463669 | 897 | |
92574c7c MP |
898 | /* -Wimplicit-int is enabled by default for C99. */ |
899 | if (warn_implicit_int == -1) | |
900 | warn_implicit_int = flag_isoc99; | |
901 | ||
451b5e48 MP |
902 | /* -Wshift-overflow is enabled by default in C99 and C++11 modes. */ |
903 | if (warn_shift_overflow == -1) | |
904 | warn_shift_overflow = cxx_dialect >= cxx11 || flag_isoc99; | |
905 | ||
0173bd2a MP |
906 | /* -Wshift-negative-value is enabled by -Wextra in C99 and C++11 modes. */ |
907 | if (warn_shift_negative_value == -1) | |
908 | warn_shift_negative_value = (extra_warnings | |
909 | && (cxx_dialect >= cxx11 || flag_isoc99)); | |
910 | ||
a2c6e7f2 JJ |
911 | /* -Wregister is enabled by default in C++17. */ |
912 | if (!global_options_set.x_warn_register) | |
7b936140 | 913 | warn_register = cxx_dialect >= cxx17; |
a2c6e7f2 | 914 | |
1f26ac87 JM |
915 | /* Declone C++ 'structors if -Os. */ |
916 | if (flag_declone_ctor_dtor == -1) | |
917 | flag_declone_ctor_dtor = optimize_size; | |
918 | ||
62984918 JM |
919 | if (flag_abi_compat_version == 1) |
920 | { | |
921 | warning (0, "%<-fabi-compat-version=1%> is not supported, using =2"); | |
922 | flag_abi_compat_version = 2; | |
923 | } | |
34a7a230 JM |
924 | |
925 | /* Change flag_abi_version to be the actual current ABI level, for the | |
926 | benefit of c_cpp_builtins, and to make comparison simpler. */ | |
927 | const int latest_abi_version = 13; | |
928 | /* Generate compatibility aliases for ABI v11 (7.1) by default. */ | |
929 | const int abi_compat_default = 11; | |
930 | ||
931 | #define clamp(X) if (X == 0 || X > latest_abi_version) X = latest_abi_version | |
932 | clamp (flag_abi_version); | |
933 | clamp (warn_abi_version); | |
934 | clamp (flag_abi_compat_version); | |
935 | #undef clamp | |
936 | ||
937 | /* Default -Wabi= or -fabi-compat-version= from each other. */ | |
938 | if (warn_abi_version == -1 && flag_abi_compat_version != -1) | |
939 | warn_abi_version = flag_abi_compat_version; | |
940 | else if (flag_abi_compat_version == -1 && warn_abi_version != -1) | |
941 | flag_abi_compat_version = warn_abi_version; | |
942 | else if (warn_abi_version == -1 && flag_abi_compat_version == -1) | |
62984918 | 943 | { |
34a7a230 JM |
944 | warn_abi_version = latest_abi_version; |
945 | if (flag_abi_version == latest_abi_version) | |
5cef3733 | 946 | { |
097f82ec | 947 | auto_diagnostic_group d; |
93964ebd | 948 | if (warning (OPT_Wabi, "%<-Wabi%> won%'t warn about anything")) |
5cef3733 | 949 | { |
a3f9f006 | 950 | inform (input_location, "%<-Wabi%> warns about differences " |
5cef3733 JM |
951 | "from the most up-to-date ABI, which is also used " |
952 | "by default"); | |
a3f9f006 | 953 | inform (input_location, "use e.g. %<-Wabi=11%> to warn about " |
5cef3733 JM |
954 | "changes from GCC 7"); |
955 | } | |
956 | flag_abi_compat_version = abi_compat_default; | |
957 | } | |
34a7a230 JM |
958 | else |
959 | flag_abi_compat_version = latest_abi_version; | |
62984918 JM |
960 | } |
961 | ||
31f7f784 JM |
962 | /* By default, enable the new inheriting constructor semantics along with ABI |
963 | 11. New and old should coexist fine, but it is a change in what | |
964 | artificial symbols are generated. */ | |
965 | if (!global_options_set.x_flag_new_inheriting_ctors) | |
966 | flag_new_inheriting_ctors = abi_version_at_least (11); | |
967 | ||
7b936140 | 968 | /* For GCC 7, only enable DR150 resolution by default if -std=c++17. */ |
31bfc9b9 | 969 | if (!global_options_set.x_flag_new_ttp) |
7b936140 | 970 | flag_new_ttp = (cxx_dialect >= cxx17); |
31bfc9b9 | 971 | |
604b2bfc | 972 | if (cxx_dialect >= cxx11) |
25339f10 JM |
973 | { |
974 | /* If we're allowing C++0x constructs, don't warn about C++98 | |
975 | identifiers which are keywords in C++0x. */ | |
765189ff | 976 | warn_cxx11_compat = 0; |
edff0c06 | 977 | cpp_opts->cpp_warn_cxx11_compat = 0; |
25339f10 JM |
978 | |
979 | if (warn_narrowing == -1) | |
980 | warn_narrowing = 1; | |
dcb466ec JJ |
981 | |
982 | /* Unless -f{,no-}ext-numeric-literals has been used explicitly, | |
026a79f7 | 983 | for -std=c++{11,14,17,2a} default to -fno-ext-numeric-literals. */ |
dcb466ec JJ |
984 | if (flag_iso && !global_options_set.x_flag_ext_numeric_literals) |
985 | cpp_opts->ext_numeric_literals = 0; | |
25339f10 JM |
986 | } |
987 | else if (warn_narrowing == -1) | |
988 | warn_narrowing = 0; | |
beeffe36 | 989 | |
d0cf395a JM |
990 | /* C++17 has stricter evaluation order requirements; let's use some of them |
991 | for earlier C++ as well, so chaining works as expected. */ | |
4eb24e01 | 992 | if (c_dialect_cxx () |
d0cf395a | 993 | && flag_strong_eval_order == -1) |
7b936140 | 994 | flag_strong_eval_order = (cxx_dialect >= cxx17 ? 2 : 1); |
4eb24e01 | 995 | |
20b06add JM |
996 | /* Global sized deallocation is new in C++14. */ |
997 | if (flag_sized_deallocation == -1) | |
998 | flag_sized_deallocation = (cxx_dialect >= cxx14); | |
999 | ||
2d91f79d TH |
1000 | /* char8_t support is new in C++2A. */ |
1001 | if (flag_char8_t == -1) | |
1002 | flag_char8_t = (cxx_dialect >= cxx2a); | |
1003 | ||
5af057d8 JM |
1004 | if (flag_extern_tls_init) |
1005 | { | |
a8b522b4 ML |
1006 | if (!TARGET_SUPPORTS_ALIASES || !SUPPORTS_WEAK) |
1007 | { | |
1008 | /* Lazy TLS initialization for a variable in another TU requires | |
1009 | alias and weak reference support. */ | |
1010 | if (flag_extern_tls_init > 0) | |
1011 | sorry ("external TLS initialization functions not supported " | |
1012 | "on this target"); | |
1013 | ||
1014 | flag_extern_tls_init = 0; | |
1015 | } | |
1016 | else | |
1017 | flag_extern_tls_init = 1; | |
5af057d8 JM |
1018 | } |
1019 | ||
b67b9225 DP |
1020 | /* Enable by default only for C++ and C++ with ObjC extensions. */ |
1021 | if (warn_return_type == -1 && c_dialect_cxx ()) | |
1022 | warn_return_type = 1; | |
1b6fa695 | 1023 | |
7c145456 | 1024 | if (num_in_fnames > 1) |
a9c697b8 MS |
1025 | error ("too many filenames given; type %<%s %s%> for usage", |
1026 | progname, "--help"); | |
7c145456 | 1027 | |
460bd0e3 NB |
1028 | if (flag_preprocess_only) |
1029 | { | |
63973df3 NB |
1030 | /* Open the output now. We must do so even if flag_no_output is |
1031 | on, because there may be other output than from the actual | |
1032 | preprocessing (e.g. from -dM). */ | |
1033 | if (out_fname[0] == '\0') | |
1034 | out_stream = stdout; | |
1035 | else | |
1036 | out_stream = fopen (out_fname, "w"); | |
1037 | ||
1038 | if (out_stream == NULL) | |
9d10c9a9 | 1039 | { |
40fecdd6 | 1040 | fatal_error (input_location, "opening output file %s: %m", out_fname); |
c366ade5 | 1041 | return false; |
9d10c9a9 | 1042 | } |
63973df3 | 1043 | |
9d10c9a9 | 1044 | init_pp_output (out_stream); |
460bd0e3 | 1045 | } |
9d10c9a9 NB |
1046 | else |
1047 | { | |
1048 | init_c_lex (); | |
237e9384 JJ |
1049 | |
1050 | /* When writing a PCH file, avoid reading some other PCH file, | |
1051 | because the default address space slot then can't be used | |
1052 | for the output PCH file. */ | |
1053 | if (pch_file) | |
f6007d99 JJ |
1054 | { |
1055 | c_common_no_more_pch (); | |
1056 | /* Only -g0 and -gdwarf* are supported with PCH, for other | |
1057 | debug formats we warn here and refuse to load any PCH files. */ | |
1058 | if (write_symbols != NO_DEBUG && write_symbols != DWARF2_DEBUG) | |
1059 | warning (OPT_Wdeprecated, | |
a9c697b8 | 1060 | "the %qs debug format cannot be used with " |
f6007d99 JJ |
1061 | "pre-compiled headers", debug_type_names[write_symbols]); |
1062 | } | |
1063 | else if (write_symbols != NO_DEBUG && write_symbols != DWARF2_DEBUG) | |
237e9384 | 1064 | c_common_no_more_pch (); |
460bd0e3 | 1065 | |
9d10c9a9 | 1066 | /* Yuk. WTF is this? I do know ObjC relies on it somewhere. */ |
3c20847b | 1067 | input_location = UNKNOWN_LOCATION; |
9d10c9a9 | 1068 | } |
63973df3 | 1069 | |
8e9ea4d7 PB |
1070 | cb = cpp_get_callbacks (parse_in); |
1071 | cb->file_change = cb_file_change; | |
1072 | cb->dir_change = cb_dir_change; | |
4169c321 | 1073 | cpp_post_options (parse_in); |
43f9a13c | 1074 | init_global_opts_from_cpp (&global_options, cpp_get_options (parse_in)); |
23345bbb | 1075 | |
3c20847b | 1076 | input_location = UNKNOWN_LOCATION; |
4bfec483 | 1077 | |
8e9ea4d7 PB |
1078 | *pfilename = this_input_filename |
1079 | = cpp_read_main_file (parse_in, in_fnames[0]); | |
540554f4 | 1080 | /* Don't do any compilation or preprocessing if there is no input file. */ |
8e9ea4d7 | 1081 | if (this_input_filename == NULL) |
540554f4 JW |
1082 | { |
1083 | errorcount++; | |
1084 | return false; | |
1085 | } | |
8e9ea4d7 | 1086 | |
8a4baa83 | 1087 | if (flag_working_directory |
3f75a254 | 1088 | && flag_preprocess_only && !flag_no_line_commands) |
8e9ea4d7 PB |
1089 | pp_dir_change (parse_in, get_src_pwd ()); |
1090 | ||
ba9b1f11 RG |
1091 | /* Disable LTO output when outputting a precompiled header. */ |
1092 | if (pch_file && flag_lto) | |
1093 | { | |
1094 | flag_lto = 0; | |
1095 | flag_generate_lto = 0; | |
1096 | } | |
1097 | ||
4bfec483 NB |
1098 | return flag_preprocess_only; |
1099 | } | |
1100 | ||
1101 | /* Front end initialization common to C, ObjC and C++. */ | |
1102 | bool | |
2f6e4e97 | 1103 | c_common_init (void) |
4bfec483 | 1104 | { |
4bfec483 NB |
1105 | /* Set up preprocessor arithmetic. Must be done after call to |
1106 | c_common_nodes_and_builtins for type nodes to be good. */ | |
1107 | cpp_opts->precision = TYPE_PRECISION (intmax_type_node); | |
1108 | cpp_opts->char_precision = TYPE_PRECISION (char_type_node); | |
1109 | cpp_opts->int_precision = TYPE_PRECISION (integer_type_node); | |
1110 | cpp_opts->wchar_precision = TYPE_PRECISION (wchar_type_node); | |
8df83eae | 1111 | cpp_opts->unsigned_wchar = TYPE_UNSIGNED (wchar_type_node); |
e6cc3a24 ZW |
1112 | cpp_opts->bytes_big_endian = BYTES_BIG_ENDIAN; |
1113 | ||
1114 | /* This can't happen until after wchar_precision and bytes_big_endian | |
1115 | are known. */ | |
1116 | cpp_init_iconv (parse_in); | |
460bd0e3 | 1117 | |
3fd30b88 | 1118 | if (version_flag) |
8ca92d04 SB |
1119 | { |
1120 | int i; | |
1121 | fputs ("Compiler executable checksum: ", stderr); | |
1122 | for (i = 0; i < 16; i++) | |
1123 | fprintf (stderr, "%02x", executable_checksum[i]); | |
1124 | putc ('\n', stderr); | |
1125 | } | |
3fd30b88 | 1126 | |
a25a8f3b JJ |
1127 | /* Has to wait until now so that cpplib has its hash table. */ |
1128 | init_pragma (); | |
1129 | ||
9d10c9a9 NB |
1130 | if (flag_preprocess_only) |
1131 | { | |
c98cd5bf | 1132 | c_finish_options (); |
8e9ea4d7 | 1133 | preprocess_file (parse_in); |
4bfec483 | 1134 | return false; |
9d10c9a9 NB |
1135 | } |
1136 | ||
4bfec483 | 1137 | return true; |
76c3e73e NB |
1138 | } |
1139 | ||
d1bd0ded GK |
1140 | /* Initialize the integrated preprocessor after debug output has been |
1141 | initialized; loop over each input file. */ | |
23345bbb | 1142 | void |
b37421c6 | 1143 | c_common_parse_file (void) |
23345bbb | 1144 | { |
9affb2c7 ZW |
1145 | unsigned int i; |
1146 | ||
9affb2c7 ZW |
1147 | i = 0; |
1148 | for (;;) | |
1149 | { | |
c98cd5bf | 1150 | c_finish_options (); |
2a8a8d7b | 1151 | /* Open the dump file to use for the original dump output |
f8a36c78 TJ |
1152 | here, to be used during parsing for the current file. */ |
1153 | original_dump_file = dump_begin (TDI_original, &original_dump_flags); | |
9affb2c7 ZW |
1154 | pch_init (); |
1155 | push_file_scope (); | |
1156 | c_parse_file (); | |
9affb2c7 | 1157 | pop_file_scope (); |
9e9945c5 DB |
1158 | /* And end the main input file, if the debug writer wants it */ |
1159 | if (debug_hooks->start_end_main_source_file) | |
1160 | (*debug_hooks->end_source_file) (0); | |
9affb2c7 ZW |
1161 | if (++i >= num_in_fnames) |
1162 | break; | |
1163 | cpp_undef_all (parse_in); | |
97f6bd40 | 1164 | cpp_clear_file_cache (parse_in); |
9affb2c7 ZW |
1165 | this_input_filename |
1166 | = cpp_read_main_file (parse_in, in_fnames[i]); | |
f8a36c78 TJ |
1167 | if (original_dump_file) |
1168 | { | |
1169 | dump_end (TDI_original, original_dump_file); | |
1170 | original_dump_file = NULL; | |
1171 | } | |
9affb2c7 | 1172 | /* If an input file is missing, abandon further compilation. |
c22cacf3 | 1173 | cpplib has issued a diagnostic. */ |
9affb2c7 ZW |
1174 | if (!this_input_filename) |
1175 | break; | |
1176 | } | |
d7438551 AH |
1177 | |
1178 | c_parse_final_cleanups (); | |
23345bbb | 1179 | } |
f8a36c78 TJ |
1180 | |
1181 | /* Returns the appropriate dump file for PHASE to dump with FLAGS. */ | |
2a8a8d7b | 1182 | |
f8a36c78 | 1183 | FILE * |
1a817418 | 1184 | get_dump_info (int phase, dump_flags_t *flags) |
f8a36c78 | 1185 | { |
2a8a8d7b NS |
1186 | gcc_assert (phase == TDI_original); |
1187 | ||
1188 | *flags = original_dump_flags; | |
1189 | return original_dump_file; | |
f8a36c78 | 1190 | } |
23345bbb | 1191 | |
76c3e73e NB |
1192 | /* Common finish hook for the C, ObjC and C++ front ends. */ |
1193 | void | |
2f6e4e97 | 1194 | c_common_finish (void) |
76c3e73e NB |
1195 | { |
1196 | FILE *deps_stream = NULL; | |
1197 | ||
de7c2c6a BK |
1198 | /* Note that we write the dependencies even if there are errors. This is |
1199 | useful for handling outdated generated headers that now trigger errors | |
1200 | (for example, with #error) which would be resolved by re-generating | |
1201 | them. In a sense, this complements -MG. */ | |
1202 | if (cpp_opts->deps.style != DEPS_NONE) | |
76c3e73e NB |
1203 | { |
1204 | /* If -M or -MM was seen without -MF, default output to the | |
1205 | output stream. */ | |
f4ff5a69 | 1206 | if (!deps_file) |
76c3e73e | 1207 | deps_stream = out_stream; |
e72c4afd BK |
1208 | else if (deps_file[0] == '-' && deps_file[1] == '\0') |
1209 | deps_stream = stdout; | |
76c3e73e NB |
1210 | else |
1211 | { | |
f4ff5a69 | 1212 | deps_stream = fopen (deps_file, deps_append ? "a": "w"); |
76c3e73e | 1213 | if (!deps_stream) |
40fecdd6 JM |
1214 | fatal_error (input_location, "opening dependency file %s: %m", |
1215 | deps_file); | |
76c3e73e NB |
1216 | } |
1217 | } | |
1218 | ||
1219 | /* For performance, avoid tearing down cpplib's internal structures | |
1220 | with cpp_destroy (). */ | |
148e4216 | 1221 | cpp_finish (parse_in, deps_stream); |
76c3e73e | 1222 | |
e72c4afd | 1223 | if (deps_stream && deps_stream != out_stream && deps_stream != stdout |
76c3e73e | 1224 | && (ferror (deps_stream) || fclose (deps_stream))) |
40fecdd6 | 1225 | fatal_error (input_location, "closing dependency file %s: %m", deps_file); |
76c3e73e NB |
1226 | |
1227 | if (out_stream && (ferror (out_stream) || fclose (out_stream))) | |
40fecdd6 | 1228 | fatal_error (input_location, "when writing output to %s: %m", out_fname); |
76c3e73e NB |
1229 | } |
1230 | ||
76c3e73e NB |
1231 | /* Either of two environment variables can specify output of |
1232 | dependencies. Their value is either "OUTPUT_FILE" or "OUTPUT_FILE | |
1233 | DEPS_TARGET", where OUTPUT_FILE is the file to write deps info to | |
1234 | and DEPS_TARGET is the target to mention in the deps. They also | |
1235 | result in dependency information being appended to the output file | |
182d89a3 NB |
1236 | rather than overwriting it, and like Sun's compiler |
1237 | SUNPRO_DEPENDENCIES suppresses the dependency on the main file. */ | |
76c3e73e | 1238 | static void |
2f6e4e97 | 1239 | check_deps_environment_vars (void) |
76c3e73e NB |
1240 | { |
1241 | char *spec; | |
1242 | ||
71f3e391 | 1243 | spec = getenv ("DEPENDENCIES_OUTPUT"); |
76c3e73e | 1244 | if (spec) |
f4ff5a69 | 1245 | cpp_opts->deps.style = DEPS_USER; |
76c3e73e NB |
1246 | else |
1247 | { | |
71f3e391 | 1248 | spec = getenv ("SUNPRO_DEPENDENCIES"); |
76c3e73e | 1249 | if (spec) |
182d89a3 NB |
1250 | { |
1251 | cpp_opts->deps.style = DEPS_SYSTEM; | |
1252 | cpp_opts->deps.ignore_main_file = true; | |
1253 | } | |
76c3e73e NB |
1254 | } |
1255 | ||
1256 | if (spec) | |
1257 | { | |
1258 | /* Find the space before the DEPS_TARGET, if there is one. */ | |
1259 | char *s = strchr (spec, ' '); | |
1260 | if (s) | |
1261 | { | |
1262 | /* Let the caller perform MAKE quoting. */ | |
f4ff5a69 | 1263 | defer_opt (OPT_MT, s + 1); |
76c3e73e NB |
1264 | *s = '\0'; |
1265 | } | |
1266 | ||
1267 | /* Command line -MF overrides environment variables and default. */ | |
f4ff5a69 NB |
1268 | if (!deps_file) |
1269 | deps_file = spec; | |
76c3e73e | 1270 | |
f4ff5a69 | 1271 | deps_append = 1; |
1b3c8f46 | 1272 | deps_seen = true; |
f4ff5a69 NB |
1273 | } |
1274 | } | |
1275 | ||
1276 | /* Handle deferred command line switches. */ | |
1277 | static void | |
2f6e4e97 | 1278 | handle_deferred_opts (void) |
f4ff5a69 | 1279 | { |
c6e83800 ZW |
1280 | /* Avoid allocating the deps buffer if we don't need it. |
1281 | (This flag may be true without there having been -MT or -MQ | |
1282 | options, but we'll still need the deps buffer.) */ | |
1283 | if (!deps_seen) | |
1284 | return; | |
1285 | ||
b744fc85 | 1286 | struct mkdeps *deps = cpp_get_deps (parse_in); |
f4ff5a69 | 1287 | |
b744fc85 | 1288 | for (size_t i = 0; i < deferred_count; i++) |
f4ff5a69 NB |
1289 | { |
1290 | struct deferred_opt *opt = &deferred_opts[i]; | |
1291 | ||
c1bad961 | 1292 | if (opt->code == OPT_MT || opt->code == OPT_MQ) |
c6e83800 | 1293 | deps_add_target (deps, opt->arg, opt->code == OPT_MQ); |
f4ff5a69 | 1294 | } |
f4ff5a69 NB |
1295 | } |
1296 | ||
1297 | /* These settings are appropriate for GCC, but not necessarily so for | |
1298 | cpplib as a library. */ | |
1299 | static void | |
2f6e4e97 | 1300 | sanitize_cpp_opts (void) |
f4ff5a69 NB |
1301 | { |
1302 | /* If we don't know what style of dependencies to output, complain | |
1303 | if any other dependency switches have been given. */ | |
1304 | if (deps_seen && cpp_opts->deps.style == DEPS_NONE) | |
a3f9f006 ML |
1305 | error ("to generate dependencies you must specify either %<-M%> " |
1306 | "or %<-MM%>"); | |
f4ff5a69 NB |
1307 | |
1308 | /* -dM and dependencies suppress normal output; do it here so that | |
1309 | the last -d[MDN] switch overrides earlier ones. */ | |
63973df3 NB |
1310 | if (flag_dump_macros == 'M') |
1311 | flag_no_output = 1; | |
f4ff5a69 | 1312 | |
ccfc4c91 OW |
1313 | /* By default, -fdirectives-only implies -dD. This allows subsequent phases |
1314 | to perform proper macro expansion. */ | |
1315 | if (cpp_opts->directives_only && !cpp_opts->preprocessed && !flag_dump_macros) | |
1316 | flag_dump_macros = 'D'; | |
1317 | ||
f4ff5a69 NB |
1318 | /* Disable -dD, -dN and -dI if normal output is suppressed. Allow |
1319 | -dM since at least glibc relies on -M -dM to work. */ | |
6c6cfbfd | 1320 | /* Also, flag_no_output implies flag_no_line_commands, always. */ |
63973df3 | 1321 | if (flag_no_output) |
f4ff5a69 | 1322 | { |
63973df3 NB |
1323 | if (flag_dump_macros != 'M') |
1324 | flag_dump_macros = 0; | |
1325 | flag_dump_includes = 0; | |
f9c65623 | 1326 | flag_no_line_commands = 1; |
76c3e73e | 1327 | } |
4822e563 | 1328 | else if (cpp_opts->deps.missing_files) |
a3f9f006 | 1329 | error ("%<-MG%> may only be used with %<-M%> or %<-MM%>"); |
f4ff5a69 NB |
1330 | |
1331 | cpp_opts->unsigned_char = !flag_signed_char; | |
1332 | cpp_opts->stdc_0_in_system_headers = STDC_0_IN_SYSTEM_HEADERS; | |
1333 | ||
9c650d90 | 1334 | /* Wlong-long is disabled by default. It is enabled by: |
c1771a20 | 1335 | [-Wpedantic | -Wtraditional] -std=[gnu|c]++98 ; or |
2b71f4a4 MLI |
1336 | [-Wpedantic | -Wtraditional] -std=non-c99 |
1337 | ||
1338 | Either -Wlong-long or -Wno-long-long override any other settings. | |
1339 | ??? These conditions should be handled in c.opt. */ | |
1340 | if (warn_long_long == -1) | |
1341 | { | |
1342 | warn_long_long = ((pedantic || warn_traditional) | |
1343 | && (c_dialect_cxx () ? cxx_dialect == cxx98 : !flag_isoc99)); | |
1344 | cpp_opts->cpp_warn_long_long = warn_long_long; | |
1345 | } | |
b20d9f0c AO |
1346 | |
1347 | /* If we're generating preprocessor output, emit current directory | |
1348 | if explicitly requested or if debugging information is enabled. | |
1349 | ??? Maybe we should only do it for debugging formats that | |
1350 | actually output the current directory? */ | |
1351 | if (flag_working_directory == -1) | |
1352 | flag_working_directory = (debug_info_level != DINFO_LEVEL_NONE); | |
ccfc4c91 | 1353 | |
70f6d5e1 JJ |
1354 | if (warn_implicit_fallthrough < 5) |
1355 | cpp_opts->cpp_warn_implicit_fallthrough = warn_implicit_fallthrough; | |
1356 | else | |
1357 | cpp_opts->cpp_warn_implicit_fallthrough = 0; | |
1358 | ||
ccfc4c91 OW |
1359 | if (cpp_opts->directives_only) |
1360 | { | |
34a180a6 | 1361 | if (cpp_warn_unused_macros) |
a3f9f006 ML |
1362 | error ("%<-fdirectives-only%> is incompatible " |
1363 | "with %<-Wunused-macros%>"); | |
ccfc4c91 | 1364 | if (cpp_opts->traditional) |
a3f9f006 | 1365 | error ("%<-fdirectives-only%> is incompatible with %<-traditional%>"); |
ccfc4c91 | 1366 | } |
f4ff5a69 NB |
1367 | } |
1368 | ||
5793b276 NB |
1369 | /* Add include path with a prefix at the front of its name. */ |
1370 | static void | |
b90c9338 | 1371 | add_prefixed_path (const char *suffix, incpath_kind chain) |
5793b276 | 1372 | { |
52999738 | 1373 | char *path; |
5793b276 | 1374 | const char *prefix; |
52999738 | 1375 | size_t prefix_len, suffix_len; |
5793b276 | 1376 | |
52999738 ZW |
1377 | suffix_len = strlen (suffix); |
1378 | prefix = iprefix ? iprefix : cpp_GCC_INCLUDE_DIR; | |
1379 | prefix_len = iprefix ? strlen (iprefix) : cpp_GCC_INCLUDE_DIR_len; | |
1380 | ||
5d038c4c | 1381 | path = (char *) xmalloc (prefix_len + suffix_len + 1); |
52999738 ZW |
1382 | memcpy (path, prefix, prefix_len); |
1383 | memcpy (path + prefix_len, suffix, suffix_len); | |
1384 | path[prefix_len + suffix_len] = '\0'; | |
1385 | ||
b02398bd | 1386 | add_path (path, chain, 0, false); |
5793b276 NB |
1387 | } |
1388 | ||
8e9ea4d7 PB |
1389 | /* Handle -D, -U, -A, -imacros, and the first -include. */ |
1390 | static void | |
c98cd5bf | 1391 | c_finish_options (void) |
255c10b1 | 1392 | { |
255c10b1 NB |
1393 | if (!cpp_opts->preprocessed) |
1394 | { | |
ab5324fb NS |
1395 | const line_map_ordinary *bltin_map |
1396 | = linemap_check_ordinary (linemap_add (line_table, LC_RENAME, 0, | |
1397 | _("<built-in>"), 0)); | |
1398 | cb_file_change (parse_in, bltin_map); | |
c1bad961 | 1399 | |
b35e0fa0 | 1400 | /* Make sure all of the builtins about to be declared have |
620e594b | 1401 | BUILTINS_LOCATION has their location_t. */ |
f3f6029d | 1402 | cpp_force_token_locations (parse_in, BUILTINS_LOCATION); |
b35e0fa0 JJ |
1403 | |
1404 | cpp_init_builtins (parse_in, flag_hosted); | |
1405 | c_cpp_builtins (parse_in); | |
1406 | ||
78b8811a HPN |
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. */ | |
e3339d0f | 1416 | cpp_opts->warn_dollars = (cpp_opts->cpp_pedantic && !cpp_opts->c99); |
78b8811a | 1417 | |
ab5324fb NS |
1418 | const line_map_ordinary *cmd_map |
1419 | = linemap_check_ordinary (linemap_add (line_table, LC_RENAME, 0, | |
1420 | _("<command-line>"), 0)); | |
1421 | cb_file_change (parse_in, cmd_map); | |
112598f4 | 1422 | |
ab5324fb NS |
1423 | /* All command line defines must have the same location. */ |
1424 | cpp_force_token_locations (parse_in, cmd_map->start_location); | |
1425 | for (size_t i = 0; i < deferred_count; i++) | |
c1bad961 NB |
1426 | { |
1427 | struct deferred_opt *opt = &deferred_opts[i]; | |
1428 | ||
1429 | if (opt->code == OPT_D) | |
1430 | cpp_define (parse_in, opt->arg); | |
1431 | else if (opt->code == OPT_U) | |
1432 | cpp_undef (parse_in, opt->arg); | |
1433 | else if (opt->code == OPT_A) | |
1434 | { | |
1435 | if (opt->arg[0] == '-') | |
1436 | cpp_unassert (parse_in, opt->arg + 1); | |
1437 | else | |
1438 | cpp_assert (parse_in, opt->arg); | |
1439 | } | |
1440 | } | |
255c10b1 | 1441 | |
ab5324fb NS |
1442 | cpp_stop_forcing_token_locations (parse_in); |
1443 | } | |
1444 | else if (cpp_opts->directives_only) | |
1445 | cpp_init_special_builtins (parse_in); | |
9d000e83 | 1446 | |
ab5324fb NS |
1447 | /* Start the main input file, if the debug writer wants it. */ |
1448 | if (debug_hooks->start_end_main_source_file | |
1449 | && !flag_preprocess_only) | |
1450 | (*debug_hooks->start_source_file) (0, this_input_filename); | |
255c10b1 | 1451 | |
ab5324fb NS |
1452 | if (!cpp_opts->preprocessed) |
1453 | /* Handle -imacros after -D and -U. */ | |
1454 | for (size_t i = 0; i < deferred_count; i++) | |
1455 | { | |
1456 | struct deferred_opt *opt = &deferred_opts[i]; | |
9d000e83 | 1457 | |
ab5324fb NS |
1458 | if (opt->code == OPT_imacros |
1459 | && cpp_push_include (parse_in, opt->arg)) | |
1460 | { | |
1461 | /* Disable push_command_line_include callback for now. */ | |
1462 | include_cursor = deferred_count + 1; | |
1463 | cpp_scan_nooutput (parse_in); | |
1464 | } | |
1465 | } | |
255c10b1 | 1466 | |
e6ebd07b | 1467 | include_cursor = 0; |
255c10b1 NB |
1468 | push_command_line_include (); |
1469 | } | |
1470 | ||
23345bbb NB |
1471 | /* Give CPP the next file given by -include, if any. */ |
1472 | static void | |
2f6e4e97 | 1473 | push_command_line_include (void) |
23345bbb | 1474 | { |
cdc94aca MP |
1475 | /* This can happen if disabled by -imacros for example. |
1476 | Punt so that we don't set "<command-line>" as the filename for | |
1477 | the header. */ | |
1478 | if (include_cursor > deferred_count) | |
1479 | return; | |
1480 | ||
1efcb8c6 JM |
1481 | if (!done_preinclude) |
1482 | { | |
1483 | done_preinclude = true; | |
1484 | if (flag_hosted && std_inc && !cpp_opts->preprocessed) | |
1485 | { | |
1486 | const char *preinc = targetcm.c_preinclude (); | |
1487 | if (preinc && cpp_push_default_include (parse_in, preinc)) | |
1488 | return; | |
1489 | } | |
1490 | } | |
1491 | ||
1492 | pch_cpp_save_state (); | |
1493 | ||
23345bbb NB |
1494 | while (include_cursor < deferred_count) |
1495 | { | |
1496 | struct deferred_opt *opt = &deferred_opts[include_cursor++]; | |
2f6e4e97 | 1497 | |
3f75a254 | 1498 | if (!cpp_opts->preprocessed && opt->code == OPT_include |
31703a61 | 1499 | && cpp_push_include (parse_in, opt->arg)) |
23345bbb NB |
1500 | return; |
1501 | } | |
1502 | ||
1503 | if (include_cursor == deferred_count) | |
1504 | { | |
31703a61 | 1505 | include_cursor++; |
23345bbb | 1506 | /* -Wunused-macros should only warn about macros defined hereafter. */ |
34a180a6 | 1507 | cpp_opts->warn_unused_macros = cpp_warn_unused_macros; |
ab5324fb | 1508 | /* Restore the line map back to the main file. */ |
3f75a254 | 1509 | if (!cpp_opts->preprocessed) |
3e6da82b | 1510 | cpp_change_file (parse_in, LC_RENAME, this_input_filename); |
8e9ea4d7 PB |
1511 | |
1512 | /* Set this here so the client can change the option if it wishes, | |
1513 | and after stacking the main file so we don't trace the main file. */ | |
5ffeb913 | 1514 | line_table->trace_includes = cpp_opts->print_include_names; |
23345bbb NB |
1515 | } |
1516 | } | |
1517 | ||
1518 | /* File change callback. Has to handle -include files. */ | |
1519 | static void | |
e18476eb | 1520 | cb_file_change (cpp_reader * ARG_UNUSED (pfile), |
0e50b624 | 1521 | const line_map_ordinary *new_map) |
23345bbb NB |
1522 | { |
1523 | if (flag_preprocess_only) | |
1524 | pp_file_change (new_map); | |
1525 | else | |
1526 | fe_file_change (new_map); | |
1527 | ||
b826515a BS |
1528 | if (new_map |
1529 | && (new_map->reason == LC_ENTER || new_map->reason == LC_RENAME)) | |
1530 | { | |
1531 | /* Signal to plugins that a file is included. This could happen | |
1532 | several times with the same file path, e.g. because of | |
1533 | several '#include' or '#line' directives... */ | |
1534 | invoke_plugin_callbacks | |
1535 | (PLUGIN_INCLUDE_FILE, | |
1536 | const_cast<char*> (ORDINARY_MAP_FILE_NAME (new_map))); | |
1537 | } | |
1538 | ||
31703a61 | 1539 | if (new_map == 0 || (new_map->reason == LC_LEAVE && MAIN_FILE_P (new_map))) |
1efcb8c6 JM |
1540 | { |
1541 | pch_cpp_save_state (); | |
1542 | push_command_line_include (); | |
1543 | } | |
23345bbb NB |
1544 | } |
1545 | ||
8e9ea4d7 | 1546 | void |
e18476eb | 1547 | cb_dir_change (cpp_reader * ARG_UNUSED (pfile), const char *dir) |
8e9ea4d7 | 1548 | { |
3f75a254 | 1549 | if (!set_src_pwd (dir)) |
d4ee4d25 | 1550 | warning (0, "too late for # directive to set debug directory"); |
8e9ea4d7 PB |
1551 | } |
1552 | ||
f4ff5a69 NB |
1553 | /* Set the C 89 standard (with 1994 amendments if C94, without GNU |
1554 | extensions if ISO). There is no concept of gnu94. */ | |
1555 | static void | |
2f6e4e97 | 1556 | set_std_c89 (int c94, int iso) |
f4ff5a69 NB |
1557 | { |
1558 | cpp_set_lang (parse_in, c94 ? CLK_STDC94: iso ? CLK_STDC89: CLK_GNUC89); | |
1559 | flag_iso = iso; | |
1560 | flag_no_asm = iso; | |
1561 | flag_no_gnu_keywords = iso; | |
1562 | flag_no_nonansi_builtin = iso; | |
f4ff5a69 NB |
1563 | flag_isoc94 = c94; |
1564 | flag_isoc99 = 0; | |
48b0b196 | 1565 | flag_isoc11 = 0; |
9f936c86 | 1566 | flag_isoc2x = 0; |
dcc97066 | 1567 | lang_hooks.name = "GNU C89"; |
76c3e73e NB |
1568 | } |
1569 | ||
b4a93904 NB |
1570 | /* Set the C 99 standard (without GNU extensions if ISO). */ |
1571 | static void | |
2f6e4e97 | 1572 | set_std_c99 (int iso) |
b4a93904 NB |
1573 | { |
1574 | cpp_set_lang (parse_in, iso ? CLK_STDC99: CLK_GNUC99); | |
1575 | flag_no_asm = iso; | |
1576 | flag_no_nonansi_builtin = iso; | |
b4a93904 | 1577 | flag_iso = iso; |
9f936c86 | 1578 | flag_isoc2x = 0; |
48b0b196 | 1579 | flag_isoc11 = 0; |
2778d766 JM |
1580 | flag_isoc99 = 1; |
1581 | flag_isoc94 = 1; | |
dcc97066 | 1582 | lang_hooks.name = "GNU C99"; |
2778d766 JM |
1583 | } |
1584 | ||
48b0b196 | 1585 | /* Set the C 11 standard (without GNU extensions if ISO). */ |
2778d766 | 1586 | static void |
48b0b196 | 1587 | set_std_c11 (int iso) |
2778d766 | 1588 | { |
48b0b196 | 1589 | cpp_set_lang (parse_in, iso ? CLK_STDC11: CLK_GNUC11); |
2778d766 JM |
1590 | flag_no_asm = iso; |
1591 | flag_no_nonansi_builtin = iso; | |
1592 | flag_iso = iso; | |
9f936c86 | 1593 | flag_isoc2x = 0; |
48b0b196 | 1594 | flag_isoc11 = 1; |
b4a93904 NB |
1595 | flag_isoc99 = 1; |
1596 | flag_isoc94 = 1; | |
dcc97066 | 1597 | lang_hooks.name = "GNU C11"; |
b4a93904 NB |
1598 | } |
1599 | ||
c76dc9c3 JM |
1600 | /* Set the C 17 standard (without GNU extensions if ISO). */ |
1601 | static void | |
1602 | set_std_c17 (int iso) | |
1603 | { | |
1604 | cpp_set_lang (parse_in, iso ? CLK_STDC17: CLK_GNUC17); | |
1605 | flag_no_asm = iso; | |
1606 | flag_no_nonansi_builtin = iso; | |
1607 | flag_iso = iso; | |
9f936c86 | 1608 | flag_isoc2x = 0; |
c76dc9c3 JM |
1609 | flag_isoc11 = 1; |
1610 | flag_isoc99 = 1; | |
1611 | flag_isoc94 = 1; | |
1612 | lang_hooks.name = "GNU C17"; | |
1613 | } | |
1614 | ||
9f936c86 JM |
1615 | /* Set the C 2X standard (without GNU extensions if ISO). */ |
1616 | static void | |
1617 | set_std_c2x (int iso) | |
1618 | { | |
1619 | cpp_set_lang (parse_in, iso ? CLK_STDC2X: CLK_GNUC2X); | |
1620 | flag_no_asm = iso; | |
1621 | flag_no_nonansi_builtin = iso; | |
1622 | flag_iso = iso; | |
1623 | flag_isoc2x = 1; | |
1624 | flag_isoc11 = 1; | |
1625 | flag_isoc99 = 1; | |
1626 | flag_isoc94 = 1; | |
1627 | lang_hooks.name = "GNU C2X"; | |
1628 | } | |
1629 | ||
c76dc9c3 | 1630 | |
f749a36b NB |
1631 | /* Set the C++ 98 standard (without GNU extensions if ISO). */ |
1632 | static void | |
2f6e4e97 | 1633 | set_std_cxx98 (int iso) |
f749a36b NB |
1634 | { |
1635 | cpp_set_lang (parse_in, iso ? CLK_CXX98: CLK_GNUCXX); | |
1636 | flag_no_gnu_keywords = iso; | |
1637 | flag_no_nonansi_builtin = iso; | |
f749a36b | 1638 | flag_iso = iso; |
268be88c BE |
1639 | flag_isoc94 = 0; |
1640 | flag_isoc99 = 0; | |
c1ae8be5 | 1641 | cxx_dialect = cxx98; |
dcc97066 | 1642 | lang_hooks.name = "GNU C++98"; |
f749a36b NB |
1643 | } |
1644 | ||
97e3ad20 | 1645 | /* Set the C++ 2011 standard (without GNU extensions if ISO). */ |
966541e3 | 1646 | static void |
97e3ad20 | 1647 | set_std_cxx11 (int iso) |
966541e3 | 1648 | { |
97e3ad20 | 1649 | cpp_set_lang (parse_in, iso ? CLK_CXX11: CLK_GNUCXX11); |
966541e3 DG |
1650 | flag_no_gnu_keywords = iso; |
1651 | flag_no_nonansi_builtin = iso; | |
1652 | flag_iso = iso; | |
97e3ad20 | 1653 | /* C++11 includes the C99 standard library. */ |
fcb21722 JM |
1654 | flag_isoc94 = 1; |
1655 | flag_isoc99 = 1; | |
97e3ad20 | 1656 | cxx_dialect = cxx11; |
dcc97066 | 1657 | lang_hooks.name = "GNU C++11"; |
966541e3 DG |
1658 | } |
1659 | ||
7b936140 | 1660 | /* Set the C++ 2014 standard (without GNU extensions if ISO). */ |
552b8185 | 1661 | static void |
e4276ba5 | 1662 | set_std_cxx14 (int iso) |
552b8185 | 1663 | { |
e4276ba5 | 1664 | cpp_set_lang (parse_in, iso ? CLK_CXX14: CLK_GNUCXX14); |
552b8185 JM |
1665 | flag_no_gnu_keywords = iso; |
1666 | flag_no_nonansi_builtin = iso; | |
1667 | flag_iso = iso; | |
026a79f7 | 1668 | /* C++14 includes the C99 standard library. */ |
552b8185 JM |
1669 | flag_isoc94 = 1; |
1670 | flag_isoc99 = 1; | |
e4276ba5 | 1671 | cxx_dialect = cxx14; |
dcc97066 | 1672 | lang_hooks.name = "GNU C++14"; |
552b8185 JM |
1673 | } |
1674 | ||
7b936140 | 1675 | /* Set the C++ 2017 standard (without GNU extensions if ISO). */ |
da73100b | 1676 | static void |
7b936140 | 1677 | set_std_cxx17 (int iso) |
da73100b | 1678 | { |
7b936140 | 1679 | cpp_set_lang (parse_in, iso ? CLK_CXX17: CLK_GNUCXX17); |
da73100b JM |
1680 | flag_no_gnu_keywords = iso; |
1681 | flag_no_nonansi_builtin = iso; | |
1682 | flag_iso = iso; | |
026a79f7 | 1683 | /* C++17 includes the C11 standard library. */ |
da73100b JM |
1684 | flag_isoc94 = 1; |
1685 | flag_isoc99 = 1; | |
e4276ba5 | 1686 | flag_isoc11 = 1; |
7b936140 JJ |
1687 | cxx_dialect = cxx17; |
1688 | lang_hooks.name = "GNU C++17"; | |
da73100b JM |
1689 | } |
1690 | ||
026a79f7 AS |
1691 | /* Set the C++ 202a draft standard (without GNU extensions if ISO). */ |
1692 | static void | |
1693 | set_std_cxx2a (int iso) | |
1694 | { | |
1695 | cpp_set_lang (parse_in, iso ? CLK_CXX2A: CLK_GNUCXX2A); | |
1696 | flag_no_gnu_keywords = iso; | |
1697 | flag_no_nonansi_builtin = iso; | |
1698 | flag_iso = iso; | |
1699 | /* C++17 includes the C11 standard library. */ | |
1700 | flag_isoc94 = 1; | |
1701 | flag_isoc99 = 1; | |
1702 | flag_isoc11 = 1; | |
1703 | cxx_dialect = cxx2a; | |
1704 | lang_hooks.name = "GNU C++17"; /* Pretend C++17 until standardization. */ | |
1705 | } | |
1706 | ||
4b7091eb | 1707 | /* Args to -d specify what to dump. Silently ignore |
05713b80 | 1708 | unrecognized options; they may be aimed at toplev.c. */ |
0b6f2917 | 1709 | static void |
2f6e4e97 | 1710 | handle_OPT_d (const char *arg) |
0b6f2917 | 1711 | { |
4b7091eb NB |
1712 | char c; |
1713 | ||
1714 | while ((c = *arg++) != '\0') | |
1715 | switch (c) | |
1716 | { | |
63973df3 NB |
1717 | case 'M': /* Dump macros only. */ |
1718 | case 'N': /* Dump names. */ | |
1719 | case 'D': /* Dump definitions. */ | |
93d45d9e | 1720 | case 'U': /* Dump used macros. */ |
63973df3 | 1721 | flag_dump_macros = c; |
4b7091eb NB |
1722 | break; |
1723 | ||
1724 | case 'I': | |
63973df3 | 1725 | flag_dump_includes = 1; |
4b7091eb NB |
1726 | break; |
1727 | } | |
0b6f2917 | 1728 | } |