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4ee9c684 | 1 | /* Parse and display command line options. |
fbd26352 | 2 | Copyright (C) 2000-2019 Free Software Foundation, Inc. |
4ee9c684 | 3 | Contributed by Andy Vaught |
4 | ||
c84b470d | 5 | This file is part of GCC. |
4ee9c684 | 6 | |
c84b470d | 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 | |
bdabe786 | 9 | Software Foundation; either version 3, or (at your option) any later |
c84b470d | 10 | version. |
4ee9c684 | 11 | |
c84b470d | 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. | |
4ee9c684 | 16 | |
17 | You should have received a copy of the GNU General Public License | |
bdabe786 | 18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
4ee9c684 | 20 | |
4ee9c684 | 21 | #include "config.h" |
22 | #include "system.h" | |
23 | #include "coretypes.h" | |
4cba6f60 | 24 | #include "target.h" |
4ee9c684 | 25 | #include "tree.h" |
4cba6f60 | 26 | #include "gfortran.h" |
27 | #include "diagnostic.h" /* For global_dc. */ | |
4ee9c684 | 28 | #include "opts.h" |
e3d1ab2b | 29 | #include "toplev.h" /* For save_decoded_options. */ |
2ecc6bc5 | 30 | #include "cpp.h" |
f36f9b8b | 31 | #include "langhooks.h" |
4ee9c684 | 32 | |
33 | gfc_option_t gfc_option; | |
34 | ||
fbeeb6ad | 35 | #define SET_FLAG(flag, condition, on_value, off_value) \ |
36 | do \ | |
37 | { \ | |
38 | if (condition) \ | |
39 | flag = (on_value); \ | |
40 | else \ | |
41 | flag = (off_value); \ | |
42 | } while (0) | |
43 | ||
44 | #define SET_BITFLAG2(m) m | |
45 | ||
46 | #define SET_BITFLAG(flag, condition, value) \ | |
47 | SET_BITFLAG2 (SET_FLAG (flag, condition, (flag | (value)), (flag & ~(value)))) | |
48 | ||
4ee9c684 | 49 | |
83a65a0d | 50 | /* Set flags that control warnings and errors for different |
82860817 | 51 | Fortran standards to their default values. Keep in sync with |
52 | libgfortran/runtime/compile_options.c (init_compile_options). */ | |
83a65a0d | 53 | |
54 | static void | |
55 | set_default_std_flags (void) | |
56 | { | |
57 | gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL | |
ff4425cf | 58 | | GFC_STD_F2003 | GFC_STD_F2008 | GFC_STD_F95 | GFC_STD_F77 |
2e2156cf | 59 | | GFC_STD_F2008_OBS | GFC_STD_GNU | GFC_STD_LEGACY |
003e134b | 60 | | GFC_STD_F2018 | GFC_STD_F2018_DEL | GFC_STD_F2018_OBS; |
9449a7d9 | 61 | gfc_option.warn_std = GFC_STD_F2018_DEL | GFC_STD_F95_DEL | GFC_STD_LEGACY; |
83a65a0d | 62 | } |
63 | ||
fbeeb6ad | 64 | /* Set (or unset) the DEC extension flags. */ |
d7cd448a | 65 | |
66 | static void | |
67 | set_dec_flags (int value) | |
68 | { | |
fbeeb6ad | 69 | /* Set (or unset) other DEC compatibility extensions. */ |
70 | SET_BITFLAG (flag_dollar_ok, value, value); | |
71 | SET_BITFLAG (flag_cray_pointer, value, value); | |
72 | SET_BITFLAG (flag_dec_structure, value, value); | |
73 | SET_BITFLAG (flag_dec_intrinsic_ints, value, value); | |
74 | SET_BITFLAG (flag_dec_static, value, value); | |
75 | SET_BITFLAG (flag_dec_math, value, value); | |
76 | SET_BITFLAG (flag_dec_include, value, value); | |
77 | } | |
78 | ||
79 | /* Finalize DEC flags. */ | |
80 | ||
81 | static void | |
82 | post_dec_flags (int value) | |
83 | { | |
84 | /* Don't warn for legacy code if -fdec is given; however, setting -fno-dec | |
85 | does not force these warnings. We make one final determination on this | |
86 | at the end because -std= is always set first; thus, we can avoid | |
87 | clobbering the user's desired standard settings in gfc_handle_option | |
88 | e.g. when -fdec and -fno-dec are both given. */ | |
a3b89816 | 89 | if (value) |
90 | { | |
a3b89816 | 91 | gfc_option.allow_std |= GFC_STD_F95_OBS | GFC_STD_F95_DEL |
fbeeb6ad | 92 | | GFC_STD_GNU | GFC_STD_LEGACY; |
a3b89816 | 93 | gfc_option.warn_std &= ~(GFC_STD_LEGACY | GFC_STD_F95_DEL); |
94 | } | |
d7cd448a | 95 | } |
96 | ||
fbeeb6ad | 97 | /* Enable (or disable) -finit-local-zero. */ |
98 | ||
99 | static void | |
100 | set_init_local_zero (int value) | |
101 | { | |
102 | gfc_option.flag_init_integer_value = 0; | |
103 | gfc_option.flag_init_character_value = (char)0; | |
104 | ||
105 | SET_FLAG (gfc_option.flag_init_integer, value, GFC_INIT_INTEGER_ON, | |
106 | GFC_INIT_INTEGER_OFF); | |
107 | SET_FLAG (gfc_option.flag_init_logical, value, GFC_INIT_LOGICAL_FALSE, | |
108 | GFC_INIT_LOGICAL_OFF); | |
109 | SET_FLAG (gfc_option.flag_init_character, value, GFC_INIT_CHARACTER_ON, | |
110 | GFC_INIT_CHARACTER_OFF); | |
111 | SET_FLAG (flag_init_real, value, GFC_INIT_REAL_ZERO, GFC_INIT_REAL_OFF); | |
112 | } | |
d7cd448a | 113 | |
e88d34f6 | 114 | /* Return language mask for Fortran options. */ |
115 | ||
116 | unsigned int | |
117 | gfc_option_lang_mask (void) | |
118 | { | |
119 | return CL_Fortran; | |
120 | } | |
121 | ||
f3f006ad | 122 | /* Initialize options structure OPTS. */ |
123 | ||
124 | void | |
125 | gfc_init_options_struct (struct gcc_options *opts) | |
126 | { | |
127 | opts->x_flag_errno_math = 0; | |
a5b628e2 | 128 | opts->frontend_set_flag_errno_math = true; |
f3f006ad | 129 | opts->x_flag_associative_math = -1; |
a5b628e2 | 130 | opts->frontend_set_flag_associative_math = true; |
f3f006ad | 131 | } |
e88d34f6 | 132 | |
82860817 | 133 | /* Get ready for options handling. Keep in sync with |
293d72e0 | 134 | libgfortran/runtime/compile_options.c (init_compile_options). */ |
4ee9c684 | 135 | |
e88d34f6 | 136 | void |
137 | gfc_init_options (unsigned int decoded_options_count, | |
138 | struct cl_decoded_option *decoded_options) | |
4ee9c684 | 139 | { |
8594da07 | 140 | gfc_source_file = NULL; |
4ee9c684 | 141 | gfc_option.module_dir = NULL; |
142 | gfc_option.source_form = FORM_UNKNOWN; | |
766398ac | 143 | gfc_option.max_continue_fixed = 255; |
144 | gfc_option.max_continue_free = 255; | |
4ee9c684 | 145 | gfc_option.max_identifier_length = GFC_MAX_SYMBOL_LEN; |
b6be0ac5 | 146 | gfc_option.max_errors = 25; |
4ee9c684 | 147 | |
9e3a9b8b | 148 | gfc_option.flag_preprocessed = 0; |
8594da07 | 149 | gfc_option.flag_d_lines = -1; |
9a84d5a0 | 150 | set_init_local_zero (0); |
a28eb9a8 | 151 | |
8c84a5de | 152 | gfc_option.fpe = 0; |
553e7cef | 153 | /* All except GFC_FPE_INEXACT. */ |
154 | gfc_option.fpe_summary = GFC_FPE_INVALID | GFC_FPE_DENORMAL | |
155 | | GFC_FPE_ZERO | GFC_FPE_OVERFLOW | |
156 | | GFC_FPE_UNDERFLOW; | |
ad8ed98e | 157 | gfc_option.rtcheck = 0; |
8c84a5de | 158 | |
45e6f6f0 | 159 | /* ??? Wmissing-include-dirs is disabled by default in C/C++ but |
160 | enabled by default in Fortran. Ideally, we should express this | |
161 | in .opt, but that is not supported yet. */ | |
162 | if (!global_options_set.x_cpp_warn_missing_include_dirs) | |
7082509e | 163 | global_options.x_cpp_warn_missing_include_dirs = 1; |
45e6f6f0 | 164 | |
d7cd448a | 165 | set_dec_flags (0); |
166 | ||
83a65a0d | 167 | set_default_std_flags (); |
4ee9c684 | 168 | |
2ecc6bc5 | 169 | /* Initialize cpp-related options. */ |
e88d34f6 | 170 | gfc_cpp_init_options (decoded_options_count, decoded_options); |
dc8078a3 | 171 | gfc_diagnostics_init (); |
4ee9c684 | 172 | } |
173 | ||
174 | ||
8594da07 | 175 | /* Determine the source form from the filename extension. We assume |
176 | case insensitivity. */ | |
177 | ||
178 | static gfc_source_form | |
179 | form_from_filename (const char *filename) | |
180 | { | |
8594da07 | 181 | static const struct |
182 | { | |
183 | const char *extension; | |
184 | gfc_source_form form; | |
185 | } | |
186 | exttype[] = | |
187 | { | |
188 | { | |
189 | ".f90", FORM_FREE} | |
190 | , | |
191 | { | |
192 | ".f95", FORM_FREE} | |
193 | , | |
194 | { | |
f30a3c31 | 195 | ".f03", FORM_FREE} |
196 | , | |
197 | { | |
ff4425cf | 198 | ".f08", FORM_FREE} |
199 | , | |
200 | { | |
8594da07 | 201 | ".f", FORM_FIXED} |
202 | , | |
203 | { | |
204 | ".for", FORM_FIXED} | |
205 | , | |
206 | { | |
ed19cf5f | 207 | ".ftn", FORM_FIXED} |
208 | , | |
209 | { | |
8594da07 | 210 | "", FORM_UNKNOWN} |
211 | }; /* sentinel value */ | |
212 | ||
213 | gfc_source_form f_form; | |
214 | const char *fileext; | |
215 | int i; | |
216 | ||
217 | /* Find end of file name. Note, filename is either a NULL pointer or | |
218 | a NUL terminated string. */ | |
219 | i = 0; | |
220 | while (filename[i] != '\0') | |
221 | i++; | |
222 | ||
223 | /* Find last period. */ | |
224 | while (i >= 0 && (filename[i] != '.')) | |
225 | i--; | |
226 | ||
227 | /* Did we see a file extension? */ | |
228 | if (i < 0) | |
229 | return FORM_UNKNOWN; /* Nope */ | |
230 | ||
231 | /* Get file extension and compare it to others. */ | |
232 | fileext = &(filename[i]); | |
233 | ||
234 | i = -1; | |
235 | f_form = FORM_UNKNOWN; | |
236 | do | |
237 | { | |
238 | i++; | |
239 | if (strcasecmp (fileext, exttype[i].extension) == 0) | |
240 | { | |
241 | f_form = exttype[i].form; | |
242 | break; | |
243 | } | |
244 | } | |
245 | while (exttype[i].form != FORM_UNKNOWN); | |
246 | ||
247 | return f_form; | |
248 | } | |
249 | ||
250 | ||
4ee9c684 | 251 | /* Finalize commandline options. */ |
252 | ||
253 | bool | |
254 | gfc_post_options (const char **pfilename) | |
255 | { | |
9e3a9b8b | 256 | const char *filename = *pfilename, *canon_source_file = NULL; |
a0d72493 | 257 | char *source_path; |
258 | int i; | |
4ee9c684 | 259 | |
9a84d5a0 | 260 | /* Finalize DEC flags. */ |
261 | post_dec_flags (flag_dec); | |
262 | ||
c6418a4e | 263 | /* Excess precision other than "fast" requires front-end |
264 | support. */ | |
4267ed07 | 265 | if (flag_excess_precision_cmdline == EXCESS_PRECISION_STANDARD) |
2f6d557f | 266 | sorry ("%<-fexcess-precision=standard%> for Fortran"); |
c6418a4e | 267 | flag_excess_precision_cmdline = EXCESS_PRECISION_FAST; |
268 | ||
fb063c92 | 269 | /* Fortran allows associative math - but we cannot reassociate if |
270 | we want traps or signed zeros. Cf. also flag_protect_parens. */ | |
271 | if (flag_associative_math == -1) | |
272 | flag_associative_math = (!flag_trapping_math && !flag_signed_zeros); | |
273 | ||
eb106faf | 274 | if (flag_protect_parens == -1) |
275 | flag_protect_parens = !optimize_fast; | |
9d4ede2c | 276 | |
b254210f | 277 | /* -Ofast sets implies -fstack-arrays unless an explicit size is set for |
278 | stack arrays. */ | |
279 | if (flag_stack_arrays == -1 && flag_max_stack_var_size == -2) | |
eb106faf | 280 | flag_stack_arrays = optimize_fast; |
9e412fd2 | 281 | |
929c6f45 | 282 | /* By default, disable (re)allocation during assignment for -std=f95, |
293d72e0 | 283 | and enable it for F2003/F2008/GNU/Legacy. */ |
eb106faf | 284 | if (flag_realloc_lhs == -1) |
929c6f45 | 285 | { |
286 | if (gfc_option.allow_std & GFC_STD_F2003) | |
eb106faf | 287 | flag_realloc_lhs = 1; |
929c6f45 | 288 | else |
eb106faf | 289 | flag_realloc_lhs = 0; |
929c6f45 | 290 | } |
291 | ||
ad8ed98e | 292 | /* -fbounds-check is equivalent to -fcheck=bounds */ |
293 | if (flag_bounds_check) | |
294 | gfc_option.rtcheck |= GFC_RTCHECK_BOUNDS; | |
295 | ||
71278019 | 296 | if (flag_compare_debug) |
829d7a08 | 297 | flag_dump_fortran_original = 0; |
71278019 | 298 | |
566d7c74 | 299 | /* Make -fmax-errors visible to gfortran's diagnostic machinery. */ |
300 | if (global_options_set.x_flag_max_errors) | |
301 | gfc_option.max_errors = flag_max_errors; | |
302 | ||
4ee9c684 | 303 | /* Verify the input file name. */ |
304 | if (!filename || strcmp (filename, "-") == 0) | |
305 | { | |
306 | filename = ""; | |
307 | } | |
308 | ||
9e3a9b8b | 309 | if (gfc_option.flag_preprocessed) |
310 | { | |
311 | /* For preprocessed files, if the first tokens are of the form # NUM. | |
312 | handle the directives so we know the original file name. */ | |
313 | gfc_source_file = gfc_read_orig_filename (filename, &canon_source_file); | |
314 | if (gfc_source_file == NULL) | |
315 | gfc_source_file = filename; | |
316 | else | |
317 | *pfilename = gfc_source_file; | |
318 | } | |
319 | else | |
320 | gfc_source_file = filename; | |
321 | ||
322 | if (canon_source_file == NULL) | |
323 | canon_source_file = gfc_source_file; | |
8594da07 | 324 | |
a0d72493 | 325 | /* Adds the path where the source file is to the list of include files. */ |
326 | ||
9e3a9b8b | 327 | i = strlen (canon_source_file); |
328 | while (i > 0 && !IS_DIR_SEPARATOR (canon_source_file[i])) | |
a0d72493 | 329 | i--; |
1bcc6eb8 | 330 | |
a0d72493 | 331 | if (i != 0) |
332 | { | |
48d8ad5a | 333 | source_path = (char *) alloca (i + 1); |
9e3a9b8b | 334 | memcpy (source_path, canon_source_file, i); |
a0d72493 | 335 | source_path[i] = 0; |
db24420f | 336 | gfc_add_include_path (source_path, true, true, true); |
a0d72493 | 337 | } |
338 | else | |
db24420f | 339 | gfc_add_include_path (".", true, true, true); |
a0d72493 | 340 | |
9e3a9b8b | 341 | if (canon_source_file != gfc_source_file) |
434f0922 | 342 | free (CONST_CAST (char *, canon_source_file)); |
9e3a9b8b | 343 | |
8594da07 | 344 | /* Decide which form the file will be read in as. */ |
345 | ||
346 | if (gfc_option.source_form != FORM_UNKNOWN) | |
347 | gfc_current_form = gfc_option.source_form; | |
348 | else | |
349 | { | |
350 | gfc_current_form = form_from_filename (filename); | |
351 | ||
352 | if (gfc_current_form == FORM_UNKNOWN) | |
353 | { | |
354 | gfc_current_form = FORM_FREE; | |
005915c5 | 355 | main_input_filename = filename; |
6f521718 | 356 | gfc_warning_now (0, "Reading file %qs as free form", |
bf79c656 | 357 | (filename[0] == '\0') ? "<stdin>" : filename); |
8594da07 | 358 | } |
359 | } | |
360 | ||
361 | /* If the user specified -fd-lines-as-{code|comments} verify that we're | |
362 | in fixed form. */ | |
363 | if (gfc_current_form == FORM_FREE) | |
364 | { | |
365 | if (gfc_option.flag_d_lines == 0) | |
6f521718 | 366 | gfc_warning_now (0, "%<-fd-lines-as-comments%> has no effect " |
399c003f | 367 | "in free form"); |
8594da07 | 368 | else if (gfc_option.flag_d_lines == 1) |
6f521718 | 369 | gfc_warning_now (0, "%<-fd-lines-as-code%> has no effect in free form"); |
bf1857ff | 370 | |
371 | if (warn_line_truncation == -1) | |
372 | warn_line_truncation = 1; | |
373 | ||
374 | /* Enable -Werror=line-truncation when -Werror and -Wno-error have | |
375 | not been set. */ | |
376 | if (warn_line_truncation && !global_options_set.x_warnings_are_errors | |
377 | && (global_dc->classify_diagnostic[OPT_Wline_truncation] == | |
378 | DK_UNSPECIFIED)) | |
379 | diagnostic_classify_diagnostic (global_dc, OPT_Wline_truncation, | |
380 | DK_ERROR, UNKNOWN_LOCATION); | |
8594da07 | 381 | } |
63256634 | 382 | else |
383 | { | |
384 | /* With -fdec, set -fd-lines-as-comments by default in fixed form. */ | |
385 | if (flag_dec && gfc_option.flag_d_lines == -1) | |
386 | gfc_option.flag_d_lines = 0; | |
387 | ||
388 | if (warn_line_truncation == -1) | |
389 | warn_line_truncation = 0; | |
390 | } | |
4ee9c684 | 391 | |
675e3934 | 392 | /* If -pedantic, warn about the use of GNU extensions. */ |
393 | if (pedantic && (gfc_option.allow_std & GFC_STD_GNU) != 0) | |
394 | gfc_option.warn_std |= GFC_STD_GNU; | |
c667e11d | 395 | /* -std=legacy -pedantic is effectively -std=gnu. */ |
396 | if (pedantic && (gfc_option.allow_std & GFC_STD_LEGACY) != 0) | |
397 | gfc_option.warn_std |= GFC_STD_F95_OBS | GFC_STD_F95_DEL | GFC_STD_LEGACY; | |
675e3934 | 398 | |
bdaed7d2 | 399 | /* If the user didn't explicitly specify -f(no)-second-underscore we |
400 | use it if we're trying to be compatible with f2c, and not | |
401 | otherwise. */ | |
eb106faf | 402 | if (flag_second_underscore == -1) |
829d7a08 | 403 | flag_second_underscore = flag_f2c; |
bdaed7d2 | 404 | |
829d7a08 | 405 | if (!flag_automatic && flag_max_stack_var_size != -2 |
eb106faf | 406 | && flag_max_stack_var_size != 0) |
6f521718 | 407 | gfc_warning_now (0, "Flag %<-fno-automatic%> overwrites %<-fmax-stack-var-size=%d%>", |
eb106faf | 408 | flag_max_stack_var_size); |
829d7a08 | 409 | else if (!flag_automatic && flag_recursive) |
6f521718 | 410 | gfc_warning_now (0, "Flag %<-fno-automatic%> overwrites %<-frecursive%>"); |
829d7a08 | 411 | else if (!flag_automatic && flag_openmp) |
6f521718 | 412 | gfc_warning_now (0, "Flag %<-fno-automatic%> overwrites %<-frecursive%> implied by " |
eb106faf | 413 | "%<-fopenmp%>"); |
829d7a08 | 414 | else if (flag_max_stack_var_size != -2 && flag_recursive) |
6f521718 | 415 | gfc_warning_now (0, "Flag %<-frecursive%> overwrites %<-fmax-stack-var-size=%d%>", |
eb106faf | 416 | flag_max_stack_var_size); |
829d7a08 | 417 | else if (flag_max_stack_var_size != -2 && flag_openmp) |
6f521718 | 418 | gfc_warning_now (0, "Flag %<-fmax-stack-var-size=%d%> overwrites %<-frecursive%> " |
eb106faf | 419 | "implied by %<-fopenmp%>", flag_max_stack_var_size); |
14af4f75 | 420 | |
a7bdd774 | 421 | /* Implement -frecursive as -fmax-stack-var-size=-1. */ |
829d7a08 | 422 | if (flag_recursive) |
eb106faf | 423 | flag_max_stack_var_size = -1; |
14af4f75 | 424 | |
a7bdd774 | 425 | /* Implied -frecursive; implemented as -fmax-stack-var-size=-1. */ |
829d7a08 | 426 | if (flag_max_stack_var_size == -2 && flag_openmp && flag_automatic) |
a7bdd774 | 427 | { |
829d7a08 | 428 | flag_recursive = 1; |
eb106faf | 429 | flag_max_stack_var_size = -1; |
a7bdd774 | 430 | } |
431 | ||
b254210f | 432 | /* Set flag_stack_arrays correctly. */ |
433 | if (flag_stack_arrays == -1) | |
434 | flag_stack_arrays = 0; | |
435 | ||
14af4f75 | 436 | /* Set default. */ |
eb106faf | 437 | if (flag_max_stack_var_size == -2) |
438 | flag_max_stack_var_size = 32768; | |
14af4f75 | 439 | |
7f2e183b | 440 | /* Implement -fno-automatic as -fmax-stack-var-size=0. */ |
829d7a08 | 441 | if (!flag_automatic) |
eb106faf | 442 | flag_max_stack_var_size = 0; |
e27238e0 | 443 | |
c23d681b | 444 | /* If the user did not specify an inline matmul limit, inline up to the BLAS |
445 | limit or up to 30 if no external BLAS is specified. */ | |
08f351fd | 446 | |
c23d681b | 447 | if (flag_inline_matmul_limit < 0) |
448 | { | |
449 | if (flag_external_blas) | |
450 | flag_inline_matmul_limit = flag_blas_matmul_limit; | |
451 | else | |
452 | flag_inline_matmul_limit = 30; | |
453 | } | |
08f351fd | 454 | |
10b2bb30 | 455 | /* Optimization implies front end optimization, unless the user |
456 | specified it directly. */ | |
457 | ||
eb106faf | 458 | if (flag_frontend_optimize == -1) |
229c0ef7 | 459 | flag_frontend_optimize = optimize && !optimize_debug; |
eb106faf | 460 | |
44319903 | 461 | /* Same for front end loop interchange. */ |
462 | ||
463 | if (flag_frontend_loop_interchange == -1) | |
464 | flag_frontend_loop_interchange = optimize; | |
465 | ||
829d7a08 | 466 | if (flag_max_array_constructor < 65535) |
467 | flag_max_array_constructor = 65535; | |
468 | ||
eb106faf | 469 | if (flag_fixed_line_length != 0 && flag_fixed_line_length < 7) |
470 | gfc_fatal_error ("Fixed line length must be at least seven"); | |
471 | ||
472 | if (flag_free_line_length != 0 && flag_free_line_length < 4) | |
473 | gfc_fatal_error ("Free line length must be at least three"); | |
474 | ||
475 | if (flag_max_subrecord_length > MAX_SUBRECORD_LENGTH) | |
476 | gfc_fatal_error ("Maximum subrecord length cannot exceed %d", | |
477 | MAX_SUBRECORD_LENGTH); | |
10b2bb30 | 478 | |
2ecc6bc5 | 479 | gfc_cpp_post_options (); |
480 | ||
f36f9b8b | 481 | if (gfc_option.allow_std & GFC_STD_F2008) |
482 | lang_hooks.name = "GNU Fortran2008"; | |
483 | else if (gfc_option.allow_std & GFC_STD_F2003) | |
484 | lang_hooks.name = "GNU Fortran2003"; | |
485 | ||
c7a63538 | 486 | return gfc_cpp_preprocess_only (); |
4ee9c684 | 487 | } |
488 | ||
489 | ||
4ee9c684 | 490 | static void |
491 | gfc_handle_module_path_options (const char *arg) | |
492 | { | |
493 | ||
494 | if (gfc_option.module_dir != NULL) | |
c4facd47 | 495 | gfc_fatal_error ("gfortran: Only one %<-J%> option allowed"); |
4ee9c684 | 496 | |
dfa3fb6a | 497 | gfc_option.module_dir = XCNEWVEC (char, strlen (arg) + 2); |
4ee9c684 | 498 | strcpy (gfc_option.module_dir, arg); |
3dc083ce | 499 | |
db24420f | 500 | gfc_add_include_path (gfc_option.module_dir, true, false, true); |
e500aeee | 501 | |
502 | strcat (gfc_option.module_dir, "/"); | |
4ee9c684 | 503 | } |
504 | ||
1bcc6eb8 | 505 | |
553e7cef | 506 | /* Handle options -ffpe-trap= and -ffpe-summary=. */ |
507 | ||
8c84a5de | 508 | static void |
553e7cef | 509 | gfc_handle_fpe_option (const char *arg, bool trap) |
8c84a5de | 510 | { |
511 | int result, pos = 0, n; | |
98b28ab6 | 512 | /* precision is a backwards compatibility alias for inexact. */ |
8c84a5de | 513 | static const char * const exception[] = { "invalid", "denormal", "zero", |
1bcc6eb8 | 514 | "overflow", "underflow", |
98b28ab6 | 515 | "inexact", "precision", NULL }; |
8c84a5de | 516 | static const int opt_exception[] = { GFC_FPE_INVALID, GFC_FPE_DENORMAL, |
517 | GFC_FPE_ZERO, GFC_FPE_OVERFLOW, | |
98b28ab6 | 518 | GFC_FPE_UNDERFLOW, GFC_FPE_INEXACT, |
519 | GFC_FPE_INEXACT, | |
8c84a5de | 520 | 0 }; |
553e7cef | 521 | |
293d72e0 | 522 | /* As the default for -ffpe-summary= is nonzero, set it to 0. */ |
553e7cef | 523 | if (!trap) |
524 | gfc_option.fpe_summary = 0; | |
525 | ||
8c84a5de | 526 | while (*arg) |
527 | { | |
528 | while (*arg == ',') | |
529 | arg++; | |
1bcc6eb8 | 530 | |
8c84a5de | 531 | while (arg[pos] && arg[pos] != ',') |
532 | pos++; | |
1bcc6eb8 | 533 | |
8c84a5de | 534 | result = 0; |
553e7cef | 535 | if (!trap && strncmp ("none", arg, pos) == 0) |
8c84a5de | 536 | { |
553e7cef | 537 | gfc_option.fpe_summary = 0; |
538 | arg += pos; | |
539 | pos = 0; | |
540 | continue; | |
541 | } | |
542 | else if (!trap && strncmp ("all", arg, pos) == 0) | |
543 | { | |
544 | gfc_option.fpe_summary = GFC_FPE_INVALID | GFC_FPE_DENORMAL | |
545 | | GFC_FPE_ZERO | GFC_FPE_OVERFLOW | |
546 | | GFC_FPE_UNDERFLOW | GFC_FPE_INEXACT; | |
547 | arg += pos; | |
548 | pos = 0; | |
549 | continue; | |
550 | } | |
551 | else | |
552 | for (n = 0; exception[n] != NULL; n++) | |
553 | { | |
8c84a5de | 554 | if (exception[n] && strncmp (exception[n], arg, pos) == 0) |
555 | { | |
553e7cef | 556 | if (trap) |
557 | gfc_option.fpe |= opt_exception[n]; | |
558 | else | |
559 | gfc_option.fpe_summary |= opt_exception[n]; | |
8c84a5de | 560 | arg += pos; |
561 | pos = 0; | |
562 | result = 1; | |
563 | break; | |
564 | } | |
553e7cef | 565 | } |
566 | if (!result && !trap) | |
c4facd47 | 567 | gfc_fatal_error ("Argument to %<-ffpe-trap%> is not valid: %s", arg); |
553e7cef | 568 | else if (!result) |
c4facd47 | 569 | gfc_fatal_error ("Argument to %<-ffpe-summary%> is not valid: %s", arg); |
553e7cef | 570 | |
8c84a5de | 571 | } |
572 | } | |
573 | ||
1bcc6eb8 | 574 | |
ad8ed98e | 575 | static void |
576 | gfc_handle_runtime_check_option (const char *arg) | |
577 | { | |
578 | int result, pos = 0, n; | |
579 | static const char * const optname[] = { "all", "bounds", "array-temps", | |
3a60b071 | 580 | "recursion", "do", "pointer", |
581 | "mem", NULL }; | |
ad8ed98e | 582 | static const int optmask[] = { GFC_RTCHECK_ALL, GFC_RTCHECK_BOUNDS, |
583 | GFC_RTCHECK_ARRAY_TEMPS, | |
7f1bd03f | 584 | GFC_RTCHECK_RECURSION, GFC_RTCHECK_DO, |
3a60b071 | 585 | GFC_RTCHECK_POINTER, GFC_RTCHECK_MEM, |
ad8ed98e | 586 | 0 }; |
587 | ||
588 | while (*arg) | |
589 | { | |
590 | while (*arg == ',') | |
591 | arg++; | |
592 | ||
593 | while (arg[pos] && arg[pos] != ',') | |
594 | pos++; | |
595 | ||
596 | result = 0; | |
597 | for (n = 0; optname[n] != NULL; n++) | |
598 | { | |
599 | if (optname[n] && strncmp (optname[n], arg, pos) == 0) | |
600 | { | |
601 | gfc_option.rtcheck |= optmask[n]; | |
602 | arg += pos; | |
603 | pos = 0; | |
604 | result = 1; | |
605 | break; | |
606 | } | |
ea9e8242 | 607 | else if (optname[n] && pos > 3 && gfc_str_startswith (arg, "no-") |
e7fbac94 | 608 | && strncmp (optname[n], arg+3, pos-3) == 0) |
609 | { | |
610 | gfc_option.rtcheck &= ~optmask[n]; | |
611 | arg += pos; | |
612 | pos = 0; | |
613 | result = 1; | |
614 | break; | |
615 | } | |
ad8ed98e | 616 | } |
617 | if (!result) | |
c4facd47 | 618 | gfc_fatal_error ("Argument to %<-fcheck%> is not valid: %s", arg); |
ad8ed98e | 619 | } |
620 | } | |
621 | ||
622 | ||
4ee9c684 | 623 | /* Handle command-line options. Returns 0 if unrecognized, 1 if |
624 | recognized and handled. */ | |
1bcc6eb8 | 625 | |
b78351e5 | 626 | bool |
8e18705e | 627 | gfc_handle_option (size_t scode, const char *arg, HOST_WIDE_INT value, |
3c6c0e40 | 628 | int kind ATTRIBUTE_UNUSED, location_t loc ATTRIBUTE_UNUSED, |
b78351e5 | 629 | const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED) |
4ee9c684 | 630 | { |
b78351e5 | 631 | bool result = true; |
4ee9c684 | 632 | enum opt_code code = (enum opt_code) scode; |
633 | ||
2ecc6bc5 | 634 | if (gfc_cpp_handle_option (scode, arg, value) == 1) |
b78351e5 | 635 | return true; |
2ecc6bc5 | 636 | |
4ee9c684 | 637 | switch (code) |
638 | { | |
639 | default: | |
45e6f6f0 | 640 | if (cl_options[code].flags & gfc_option_lang_mask ()) |
641 | break; | |
b78351e5 | 642 | result = false; |
4ee9c684 | 643 | break; |
644 | ||
da6ffc6d | 645 | case OPT_fcheck_array_temporaries: |
9a84d5a0 | 646 | SET_BITFLAG (gfc_option.rtcheck, value, GFC_RTCHECK_ARRAY_TEMPS); |
da6ffc6d | 647 | break; |
648 | ||
8594da07 | 649 | case OPT_fd_lines_as_code: |
650 | gfc_option.flag_d_lines = 1; | |
651 | break; | |
652 | ||
653 | case OPT_fd_lines_as_comments: | |
654 | gfc_option.flag_d_lines = 0; | |
655 | break; | |
656 | ||
4ee9c684 | 657 | case OPT_ffixed_form: |
658 | gfc_option.source_form = FORM_FIXED; | |
659 | break; | |
660 | ||
661 | case OPT_ffree_form: | |
662 | gfc_option.source_form = FORM_FREE; | |
663 | break; | |
664 | ||
9a61fba1 | 665 | case OPT_static_libgfortran: |
666 | #ifndef HAVE_LD_STATIC_DYNAMIC | |
c4facd47 | 667 | gfc_fatal_error ("%<-static-libgfortran%> is not supported in this " |
9a61fba1 | 668 | "configuration"); |
669 | #endif | |
670 | break; | |
671 | ||
99227731 | 672 | case OPT_fintrinsic_modules_path: |
7cb1cb52 | 673 | case OPT_fintrinsic_modules_path_: |
db24420f | 674 | |
675 | /* This is needed because omp_lib.h is in a directory together | |
676 | with intrinsic modules. Do no warn because during testing | |
677 | without an installed compiler, we would get lots of bogus | |
678 | warnings for a missing include directory. */ | |
679 | gfc_add_include_path (arg, false, false, false); | |
680 | ||
99227731 | 681 | gfc_add_intrinsic_modules_path (arg); |
682 | break; | |
683 | ||
9e3a9b8b | 684 | case OPT_fpreprocessed: |
685 | gfc_option.flag_preprocessed = value; | |
686 | break; | |
687 | ||
4ee9c684 | 688 | case OPT_fmax_identifier_length_: |
689 | if (value > GFC_MAX_SYMBOL_LEN) | |
b71883de | 690 | gfc_fatal_error ("Maximum supported identifier length is %d", |
4ee9c684 | 691 | GFC_MAX_SYMBOL_LEN); |
692 | gfc_option.max_identifier_length = value; | |
693 | break; | |
694 | ||
a28eb9a8 | 695 | case OPT_finit_local_zero: |
9a84d5a0 | 696 | set_init_local_zero (value); |
a28eb9a8 | 697 | break; |
698 | ||
699 | case OPT_finit_logical_: | |
700 | if (!strcasecmp (arg, "false")) | |
701 | gfc_option.flag_init_logical = GFC_INIT_LOGICAL_FALSE; | |
702 | else if (!strcasecmp (arg, "true")) | |
703 | gfc_option.flag_init_logical = GFC_INIT_LOGICAL_TRUE; | |
704 | else | |
c4facd47 | 705 | gfc_fatal_error ("Unrecognized option to %<-finit-logical%>: %s", |
a28eb9a8 | 706 | arg); |
707 | break; | |
708 | ||
a28eb9a8 | 709 | case OPT_finit_integer_: |
710 | gfc_option.flag_init_integer = GFC_INIT_INTEGER_ON; | |
9da40462 | 711 | gfc_option.flag_init_integer_value = strtol (arg, NULL, 10); |
a28eb9a8 | 712 | break; |
713 | ||
714 | case OPT_finit_character_: | |
715 | if (value >= 0 && value <= 127) | |
716 | { | |
717 | gfc_option.flag_init_character = GFC_INIT_CHARACTER_ON; | |
718 | gfc_option.flag_init_character_value = (char)value; | |
719 | } | |
720 | else | |
c4facd47 | 721 | gfc_fatal_error ("The value of n in %<-finit-character=n%> must be " |
a28eb9a8 | 722 | "between 0 and 127"); |
723 | break; | |
724 | ||
4ee9c684 | 725 | case OPT_I: |
db24420f | 726 | gfc_add_include_path (arg, true, false, true); |
4ee9c684 | 727 | break; |
728 | ||
729 | case OPT_J: | |
4ee9c684 | 730 | gfc_handle_module_path_options (arg); |
ca9ccc0d | 731 | break; |
db96818c | 732 | |
8c84a5de | 733 | case OPT_ffpe_trap_: |
553e7cef | 734 | gfc_handle_fpe_option (arg, true); |
735 | break; | |
736 | ||
737 | case OPT_ffpe_summary_: | |
738 | gfc_handle_fpe_option (arg, false); | |
8c84a5de | 739 | break; |
740 | ||
4ee9c684 | 741 | case OPT_std_f95: |
9449a7d9 | 742 | gfc_option.allow_std = GFC_STD_OPT_F95; |
4ee9c684 | 743 | gfc_option.warn_std = GFC_STD_F95_OBS; |
766398ac | 744 | gfc_option.max_continue_fixed = 19; |
745 | gfc_option.max_continue_free = 39; | |
4ee9c684 | 746 | gfc_option.max_identifier_length = 31; |
8290d53f | 747 | warn_ampersand = 1; |
638664b8 | 748 | warn_tabs = 1; |
4ee9c684 | 749 | break; |
750 | ||
751 | case OPT_std_f2003: | |
9449a7d9 | 752 | gfc_option.allow_std = GFC_STD_OPT_F03; |
d6583a5f | 753 | gfc_option.warn_std = GFC_STD_F95_OBS; |
4ee9c684 | 754 | gfc_option.max_identifier_length = 63; |
8290d53f | 755 | warn_ampersand = 1; |
638664b8 | 756 | warn_tabs = 1; |
4ee9c684 | 757 | break; |
758 | ||
ff4425cf | 759 | case OPT_std_f2008: |
9449a7d9 | 760 | gfc_option.allow_std = GFC_STD_OPT_F08; |
a3b81b0f | 761 | gfc_option.warn_std = GFC_STD_F95_OBS | GFC_STD_F2008_OBS; |
ff4425cf | 762 | gfc_option.max_identifier_length = 63; |
8290d53f | 763 | warn_ampersand = 1; |
638664b8 | 764 | warn_tabs = 1; |
ff4425cf | 765 | break; |
766 | ||
d976af8e | 767 | case OPT_std_f2008ts: |
003e134b | 768 | case OPT_std_f2018: |
9449a7d9 | 769 | gfc_option.allow_std = GFC_STD_OPT_F18; |
003e134b | 770 | gfc_option.warn_std = GFC_STD_F95_OBS | GFC_STD_F2008_OBS |
771 | | GFC_STD_F2018_OBS; | |
772 | gfc_option.max_identifier_length = 63; | |
773 | warn_ampersand = 1; | |
774 | warn_tabs = 1; | |
775 | break; | |
776 | ||
4ee9c684 | 777 | case OPT_std_gnu: |
83a65a0d | 778 | set_default_std_flags (); |
c667e11d | 779 | break; |
780 | ||
781 | case OPT_std_legacy: | |
83a65a0d | 782 | set_default_std_flags (); |
c667e11d | 783 | gfc_option.warn_std = 0; |
d6583a5f | 784 | break; |
785 | ||
3b6a4b41 | 786 | case OPT_fshort_enums: |
4aafe913 | 787 | /* Handled in language-independent code. */ |
3b6a4b41 | 788 | break; |
15774a8b | 789 | |
ad8ed98e | 790 | case OPT_fcheck_: |
791 | gfc_handle_runtime_check_option (arg); | |
792 | break; | |
d7cd448a | 793 | |
794 | case OPT_fdec: | |
9a84d5a0 | 795 | /* Set (or unset) the DEC extension flags. */ |
796 | set_dec_flags (value); | |
d7cd448a | 797 | break; |
4ee9c684 | 798 | } |
799 | ||
d3b7ee7c | 800 | Fortran_handle_option_auto (&global_options, &global_options_set, |
801 | scode, arg, value, | |
802 | gfc_option_lang_mask (), kind, | |
803 | loc, handlers, global_dc); | |
4ee9c684 | 804 | return result; |
805 | } | |
e3d1ab2b | 806 | |
807 | ||
808 | /* Return a string with the options passed to the compiler; used for | |
809 | Fortran's compiler_options() intrinsic. */ | |
810 | ||
811 | char * | |
812 | gfc_get_option_string (void) | |
813 | { | |
814 | unsigned j; | |
815 | size_t len, pos; | |
816 | char *result; | |
817 | ||
90acbb6e | 818 | /* Allocate and return a one-character string with '\0'. */ |
819 | if (!save_decoded_options_count) | |
820 | return XCNEWVEC (char, 1); | |
821 | ||
e3d1ab2b | 822 | /* Determine required string length. */ |
823 | ||
824 | len = 0; | |
825 | for (j = 1; j < save_decoded_options_count; j++) | |
826 | { | |
827 | switch (save_decoded_options[j].opt_index) | |
828 | { | |
829 | case OPT_o: | |
830 | case OPT_d: | |
831 | case OPT_dumpbase: | |
832 | case OPT_dumpdir: | |
833 | case OPT_auxbase: | |
834 | case OPT_quiet: | |
835 | case OPT_version: | |
836 | case OPT_fintrinsic_modules_path: | |
7cb1cb52 | 837 | case OPT_fintrinsic_modules_path_: |
e3d1ab2b | 838 | /* Ignore these. */ |
839 | break; | |
840 | default: | |
293d72e0 | 841 | /* Ignore file names. */ |
e3d1ab2b | 842 | if (save_decoded_options[j].orig_option_with_args_text[0] == '-') |
843 | len += 1 | |
844 | + strlen (save_decoded_options[j].orig_option_with_args_text); | |
845 | } | |
846 | } | |
847 | ||
dfa3fb6a | 848 | result = XCNEWVEC (char, len); |
e3d1ab2b | 849 | |
850 | pos = 0; | |
851 | for (j = 1; j < save_decoded_options_count; j++) | |
852 | { | |
853 | switch (save_decoded_options[j].opt_index) | |
854 | { | |
855 | case OPT_o: | |
856 | case OPT_d: | |
857 | case OPT_dumpbase: | |
858 | case OPT_dumpdir: | |
859 | case OPT_auxbase: | |
860 | case OPT_quiet: | |
861 | case OPT_version: | |
862 | case OPT_fintrinsic_modules_path: | |
7cb1cb52 | 863 | case OPT_fintrinsic_modules_path_: |
e3d1ab2b | 864 | /* Ignore these. */ |
865 | continue; | |
866 | ||
867 | case OPT_cpp_: | |
868 | /* Use "-cpp" rather than "-cpp=<temporary file>". */ | |
869 | len = 4; | |
870 | break; | |
871 | ||
872 | default: | |
293d72e0 | 873 | /* Ignore file names. */ |
e3d1ab2b | 874 | if (save_decoded_options[j].orig_option_with_args_text[0] != '-') |
875 | continue; | |
876 | ||
877 | len = strlen (save_decoded_options[j].orig_option_with_args_text); | |
878 | } | |
879 | ||
880 | memcpy (&result[pos], save_decoded_options[j].orig_option_with_args_text, len); | |
881 | pos += len; | |
882 | result[pos++] = ' '; | |
883 | } | |
884 | ||
885 | result[--pos] = '\0'; | |
886 | return result; | |
887 | } | |
9a84d5a0 | 888 | |
889 | #undef SET_BITFLAG | |
890 | #undef SET_BITFLAG2 | |
891 | #undef SET_FLAG |