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6de9cd9a | 1 | /* Parse and display command line options. |
a945c346 | 2 | Copyright (C) 2000-2024 Free Software Foundation, Inc. |
6de9cd9a DN |
3 | Contributed by Andy Vaught |
4 | ||
9fc4d79b | 5 | This file is part of GCC. |
6de9cd9a | 6 | |
9fc4d79b TS |
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 | |
d234d788 | 9 | Software Foundation; either version 3, or (at your option) any later |
9fc4d79b | 10 | version. |
6de9cd9a | 11 | |
9fc4d79b TS |
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. | |
6de9cd9a DN |
16 | |
17 | You should have received a copy of the GNU General Public License | |
d234d788 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
6de9cd9a | 20 | |
6de9cd9a DN |
21 | #include "config.h" |
22 | #include "system.h" | |
23 | #include "coretypes.h" | |
2adfab87 | 24 | #include "target.h" |
6de9cd9a | 25 | #include "tree.h" |
2adfab87 AM |
26 | #include "gfortran.h" |
27 | #include "diagnostic.h" /* For global_dc. */ | |
6de9cd9a | 28 | #include "opts.h" |
41804a5b | 29 | #include "toplev.h" /* For save_decoded_options. */ |
670637ee | 30 | #include "cpp.h" |
de3aebff | 31 | #include "langhooks.h" |
6de9cd9a DN |
32 | |
33 | gfc_option_t gfc_option; | |
34 | ||
7ed760c7 FR |
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 | ||
6de9cd9a | 49 | |
a47eec17 | 50 | /* Set flags that control warnings and errors for different |
5fb41e29 TB |
51 | Fortran standards to their default values. Keep in sync with |
52 | libgfortran/runtime/compile_options.c (init_compile_options). */ | |
a47eec17 JD |
53 | |
54 | static void | |
55 | set_default_std_flags (void) | |
56 | { | |
57 | gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL | |
f489fba1 | 58 | | GFC_STD_F2003 | GFC_STD_F2008 | GFC_STD_F95 | GFC_STD_F77 |
286f737c | 59 | | GFC_STD_F2008_OBS | GFC_STD_GNU | GFC_STD_LEGACY |
0c2ecfd4 HA |
60 | | GFC_STD_F2018 | GFC_STD_F2018_DEL | GFC_STD_F2018_OBS | GFC_STD_F2023 |
61 | | GFC_STD_F2023_DEL; | |
62 | gfc_option.warn_std = GFC_STD_F2018_DEL | GFC_STD_F95_DEL | GFC_STD_LEGACY | |
63 | | GFC_STD_F2023_DEL; | |
a47eec17 JD |
64 | } |
65 | ||
7ed760c7 | 66 | /* Set (or unset) the DEC extension flags. */ |
f6288c24 FR |
67 | |
68 | static void | |
69 | set_dec_flags (int value) | |
70 | { | |
7ed760c7 FR |
71 | /* Set (or unset) other DEC compatibility extensions. */ |
72 | SET_BITFLAG (flag_dollar_ok, value, value); | |
73 | SET_BITFLAG (flag_cray_pointer, value, value); | |
74 | SET_BITFLAG (flag_dec_structure, value, value); | |
75 | SET_BITFLAG (flag_dec_intrinsic_ints, value, value); | |
76 | SET_BITFLAG (flag_dec_static, value, value); | |
77 | SET_BITFLAG (flag_dec_math, value, value); | |
78 | SET_BITFLAG (flag_dec_include, value, value); | |
88a8126a | 79 | SET_BITFLAG (flag_dec_format_defaults, value, value); |
17f62b7e | 80 | SET_BITFLAG (flag_dec_blank_format_item, value, value); |
2afeb1ca | 81 | SET_BITFLAG (flag_dec_char_conversions, value, value); |
7ed760c7 FR |
82 | } |
83 | ||
84 | /* Finalize DEC flags. */ | |
85 | ||
86 | static void | |
87 | post_dec_flags (int value) | |
88 | { | |
89 | /* Don't warn for legacy code if -fdec is given; however, setting -fno-dec | |
90 | does not force these warnings. We make one final determination on this | |
91 | at the end because -std= is always set first; thus, we can avoid | |
92 | clobbering the user's desired standard settings in gfc_handle_option | |
93 | e.g. when -fdec and -fno-dec are both given. */ | |
7c23ac0d FR |
94 | if (value) |
95 | { | |
7c23ac0d | 96 | gfc_option.allow_std |= GFC_STD_F95_OBS | GFC_STD_F95_DEL |
7ed760c7 | 97 | | GFC_STD_GNU | GFC_STD_LEGACY; |
7c23ac0d FR |
98 | gfc_option.warn_std &= ~(GFC_STD_LEGACY | GFC_STD_F95_DEL); |
99 | } | |
f6288c24 FR |
100 | } |
101 | ||
7ed760c7 FR |
102 | /* Enable (or disable) -finit-local-zero. */ |
103 | ||
104 | static void | |
105 | set_init_local_zero (int value) | |
106 | { | |
107 | gfc_option.flag_init_integer_value = 0; | |
108 | gfc_option.flag_init_character_value = (char)0; | |
109 | ||
110 | SET_FLAG (gfc_option.flag_init_integer, value, GFC_INIT_INTEGER_ON, | |
111 | GFC_INIT_INTEGER_OFF); | |
112 | SET_FLAG (gfc_option.flag_init_logical, value, GFC_INIT_LOGICAL_FALSE, | |
113 | GFC_INIT_LOGICAL_OFF); | |
114 | SET_FLAG (gfc_option.flag_init_character, value, GFC_INIT_CHARACTER_ON, | |
115 | GFC_INIT_CHARACTER_OFF); | |
116 | SET_FLAG (flag_init_real, value, GFC_INIT_REAL_ZERO, GFC_INIT_REAL_OFF); | |
117 | } | |
f6288c24 | 118 | |
7a9bf9a4 JM |
119 | /* Return language mask for Fortran options. */ |
120 | ||
121 | unsigned int | |
122 | gfc_option_lang_mask (void) | |
123 | { | |
124 | return CL_Fortran; | |
125 | } | |
126 | ||
a75bfaa6 JM |
127 | /* Initialize options structure OPTS. */ |
128 | ||
129 | void | |
130 | gfc_init_options_struct (struct gcc_options *opts) | |
131 | { | |
132 | opts->x_flag_errno_math = 0; | |
321bff11 | 133 | opts->frontend_set_flag_errno_math = true; |
a75bfaa6 | 134 | opts->x_flag_associative_math = -1; |
321bff11 | 135 | opts->frontend_set_flag_associative_math = true; |
a75bfaa6 | 136 | } |
7a9bf9a4 | 137 | |
5fb41e29 | 138 | /* Get ready for options handling. Keep in sync with |
1cc0e193 | 139 | libgfortran/runtime/compile_options.c (init_compile_options). */ |
6de9cd9a | 140 | |
7a9bf9a4 JM |
141 | void |
142 | gfc_init_options (unsigned int decoded_options_count, | |
143 | struct cl_decoded_option *decoded_options) | |
6de9cd9a | 144 | { |
e0bcf78c | 145 | gfc_source_file = NULL; |
6de9cd9a DN |
146 | gfc_option.module_dir = NULL; |
147 | gfc_option.source_form = FORM_UNKNOWN; | |
b9eba3ba TB |
148 | /* The following is not quite right as Fortran since 2023 has: "A statement |
149 | shall not have more than one million characters." This can already be | |
150 | reached by 'just' 100 lines with 10,000 characters each. */ | |
151 | gfc_option.max_continue_fixed = 1000000; | |
152 | gfc_option.max_continue_free = 1000000; | |
6de9cd9a | 153 | gfc_option.max_identifier_length = GFC_MAX_SYMBOL_LEN; |
3f139fcf | 154 | gfc_option.max_errors = 25; |
6de9cd9a | 155 | |
2d7c7df6 | 156 | gfc_option.flag_preprocessed = 0; |
e0bcf78c | 157 | gfc_option.flag_d_lines = -1; |
c3e799e1 | 158 | set_init_local_zero (0); |
51b09ce3 | 159 | |
944b8b35 | 160 | gfc_option.fpe = 0; |
fa86f4f9 TB |
161 | /* All except GFC_FPE_INEXACT. */ |
162 | gfc_option.fpe_summary = GFC_FPE_INVALID | GFC_FPE_DENORMAL | |
163 | | GFC_FPE_ZERO | GFC_FPE_OVERFLOW | |
164 | | GFC_FPE_UNDERFLOW; | |
d3d3011f | 165 | gfc_option.rtcheck = 0; |
944b8b35 | 166 | |
f6288c24 | 167 | set_dec_flags (0); |
a47eec17 | 168 | set_default_std_flags (); |
6de9cd9a | 169 | |
670637ee | 170 | /* Initialize cpp-related options. */ |
7a9bf9a4 | 171 | gfc_cpp_init_options (decoded_options_count, decoded_options); |
8e54f6d3 | 172 | gfc_diagnostics_init (); |
6de9cd9a DN |
173 | } |
174 | ||
175 | ||
e0bcf78c TS |
176 | /* Determine the source form from the filename extension. We assume |
177 | case insensitivity. */ | |
178 | ||
179 | static gfc_source_form | |
180 | form_from_filename (const char *filename) | |
181 | { | |
e0bcf78c TS |
182 | static const struct |
183 | { | |
184 | const char *extension; | |
185 | gfc_source_form form; | |
186 | } | |
187 | exttype[] = | |
188 | { | |
189 | { | |
190 | ".f90", FORM_FREE} | |
191 | , | |
192 | { | |
193 | ".f95", FORM_FREE} | |
194 | , | |
195 | { | |
7befd5d2 TB |
196 | ".f03", FORM_FREE} |
197 | , | |
198 | { | |
f489fba1 FXC |
199 | ".f08", FORM_FREE} |
200 | , | |
201 | { | |
ba615557 RJ |
202 | ".fii", FORM_FREE} |
203 | , | |
204 | { | |
205 | ".fi", FORM_FIXED} | |
206 | , | |
207 | { | |
e0bcf78c TS |
208 | ".f", FORM_FIXED} |
209 | , | |
210 | { | |
211 | ".for", FORM_FIXED} | |
212 | , | |
213 | { | |
1200489c TB |
214 | ".ftn", FORM_FIXED} |
215 | , | |
216 | { | |
e0bcf78c TS |
217 | "", FORM_UNKNOWN} |
218 | }; /* sentinel value */ | |
219 | ||
220 | gfc_source_form f_form; | |
221 | const char *fileext; | |
222 | int i; | |
223 | ||
224 | /* Find end of file name. Note, filename is either a NULL pointer or | |
225 | a NUL terminated string. */ | |
226 | i = 0; | |
227 | while (filename[i] != '\0') | |
228 | i++; | |
229 | ||
230 | /* Find last period. */ | |
231 | while (i >= 0 && (filename[i] != '.')) | |
232 | i--; | |
233 | ||
234 | /* Did we see a file extension? */ | |
235 | if (i < 0) | |
236 | return FORM_UNKNOWN; /* Nope */ | |
237 | ||
238 | /* Get file extension and compare it to others. */ | |
239 | fileext = &(filename[i]); | |
240 | ||
241 | i = -1; | |
242 | f_form = FORM_UNKNOWN; | |
243 | do | |
244 | { | |
245 | i++; | |
246 | if (strcasecmp (fileext, exttype[i].extension) == 0) | |
247 | { | |
248 | f_form = exttype[i].form; | |
249 | break; | |
250 | } | |
251 | } | |
252 | while (exttype[i].form != FORM_UNKNOWN); | |
253 | ||
254 | return f_form; | |
255 | } | |
256 | ||
257 | ||
6de9cd9a DN |
258 | /* Finalize commandline options. */ |
259 | ||
260 | bool | |
261 | gfc_post_options (const char **pfilename) | |
262 | { | |
2d7c7df6 | 263 | const char *filename = *pfilename, *canon_source_file = NULL; |
b424a572 | 264 | char *source_path; |
83aac698 | 265 | bool verbose_missing_dir_warn; |
b424a572 | 266 | int i; |
6de9cd9a | 267 | |
417ea5c0 TB |
268 | /* This needs to be after the commandline has been processed. |
269 | In Fortran, the options is by default enabled, in C/C++ | |
83aac698 TB |
270 | by default disabled. |
271 | If not enabled explicitly by the user, only warn for -I | |
272 | and -J, otherwise warn for all include paths. */ | |
273 | verbose_missing_dir_warn | |
00f34291 | 274 | = (OPTION_SET_P (cpp_warn_missing_include_dirs) |
83aac698 | 275 | && global_options.x_cpp_warn_missing_include_dirs); |
417ea5c0 TB |
276 | SET_OPTION_IF_UNSET (&global_options, &global_options_set, |
277 | cpp_warn_missing_include_dirs, 1); | |
83aac698 | 278 | gfc_check_include_dirs (verbose_missing_dir_warn); |
417ea5c0 | 279 | |
b9eba3ba TB |
280 | SET_OPTION_IF_UNSET (&global_options, &global_options_set, |
281 | flag_free_line_length, | |
282 | (gfc_option.allow_std & GFC_STD_F2023) ? 10000 : 132); | |
283 | ||
c3e799e1 FR |
284 | /* Finalize DEC flags. */ |
285 | post_dec_flags (flag_dec); | |
286 | ||
8ce94e44 JM |
287 | /* Excess precision other than "fast" requires front-end |
288 | support. */ | |
df375b03 | 289 | if (flag_excess_precision == EXCESS_PRECISION_STANDARD) |
a3f9f006 | 290 | sorry ("%<-fexcess-precision=standard%> for Fortran"); |
f19a3270 | 291 | else if (flag_excess_precision == EXCESS_PRECISION_FLOAT16) |
292 | sorry ("%<-fexcess-precision=16%> for Fortran"); | |
293 | ||
df375b03 | 294 | flag_excess_precision = EXCESS_PRECISION_FAST; |
8ce94e44 | 295 | |
feef2551 TB |
296 | /* Fortran allows associative math - but we cannot reassociate if |
297 | we want traps or signed zeros. Cf. also flag_protect_parens. */ | |
298 | if (flag_associative_math == -1) | |
299 | flag_associative_math = (!flag_trapping_math && !flag_signed_zeros); | |
300 | ||
203c7ebf TB |
301 | if (flag_protect_parens == -1) |
302 | flag_protect_parens = !optimize_fast; | |
7a994646 | 303 | |
950a884b TK |
304 | /* -Ofast sets implies -fstack-arrays unless an explicit size is set for |
305 | stack arrays. */ | |
306 | if (flag_stack_arrays == -1 && flag_max_stack_var_size == -2) | |
203c7ebf | 307 | flag_stack_arrays = optimize_fast; |
2d8c9ad5 | 308 | |
597553ab | 309 | /* By default, disable (re)allocation during assignment for -std=f95, |
1cc0e193 | 310 | and enable it for F2003/F2008/GNU/Legacy. */ |
203c7ebf | 311 | if (flag_realloc_lhs == -1) |
597553ab PT |
312 | { |
313 | if (gfc_option.allow_std & GFC_STD_F2003) | |
203c7ebf | 314 | flag_realloc_lhs = 1; |
597553ab | 315 | else |
203c7ebf | 316 | flag_realloc_lhs = 0; |
597553ab PT |
317 | } |
318 | ||
d3d3011f FXC |
319 | /* -fbounds-check is equivalent to -fcheck=bounds */ |
320 | if (flag_bounds_check) | |
321 | gfc_option.rtcheck |= GFC_RTCHECK_BOUNDS; | |
322 | ||
2153915d | 323 | if (flag_compare_debug) |
c61819ff | 324 | flag_dump_fortran_original = 0; |
2153915d | 325 | |
3a789837 | 326 | /* Make -fmax-errors visible to gfortran's diagnostic machinery. */ |
00f34291 | 327 | if (OPTION_SET_P (flag_max_errors)) |
3a789837 NF |
328 | gfc_option.max_errors = flag_max_errors; |
329 | ||
6de9cd9a DN |
330 | /* Verify the input file name. */ |
331 | if (!filename || strcmp (filename, "-") == 0) | |
332 | { | |
333 | filename = ""; | |
334 | } | |
335 | ||
2d7c7df6 JJ |
336 | if (gfc_option.flag_preprocessed) |
337 | { | |
338 | /* For preprocessed files, if the first tokens are of the form # NUM. | |
339 | handle the directives so we know the original file name. */ | |
340 | gfc_source_file = gfc_read_orig_filename (filename, &canon_source_file); | |
341 | if (gfc_source_file == NULL) | |
342 | gfc_source_file = filename; | |
343 | else | |
344 | *pfilename = gfc_source_file; | |
345 | } | |
346 | else | |
347 | gfc_source_file = filename; | |
348 | ||
349 | if (canon_source_file == NULL) | |
350 | canon_source_file = gfc_source_file; | |
e0bcf78c | 351 | |
b424a572 FXC |
352 | /* Adds the path where the source file is to the list of include files. */ |
353 | ||
2d7c7df6 JJ |
354 | i = strlen (canon_source_file); |
355 | while (i > 0 && !IS_DIR_SEPARATOR (canon_source_file[i])) | |
b424a572 | 356 | i--; |
edf1eac2 | 357 | |
b424a572 FXC |
358 | if (i != 0) |
359 | { | |
ece3f663 | 360 | source_path = (char *) alloca (i + 1); |
2d7c7df6 | 361 | memcpy (source_path, canon_source_file, i); |
b424a572 | 362 | source_path[i] = 0; |
83aac698 TB |
363 | /* Only warn if the directory is different from the input file as |
364 | if that one is not found, already an error is shown. */ | |
365 | bool warn = gfc_option.flag_preprocessed && gfc_source_file != filename; | |
366 | gfc_add_include_path (source_path, true, true, warn, false); | |
b424a572 FXC |
367 | } |
368 | else | |
83aac698 | 369 | gfc_add_include_path (".", true, true, false, false); |
b424a572 | 370 | |
2d7c7df6 | 371 | if (canon_source_file != gfc_source_file) |
cede9502 | 372 | free (CONST_CAST (char *, canon_source_file)); |
2d7c7df6 | 373 | |
e0bcf78c TS |
374 | /* Decide which form the file will be read in as. */ |
375 | ||
376 | if (gfc_option.source_form != FORM_UNKNOWN) | |
377 | gfc_current_form = gfc_option.source_form; | |
378 | else | |
379 | { | |
380 | gfc_current_form = form_from_filename (filename); | |
381 | ||
382 | if (gfc_current_form == FORM_UNKNOWN) | |
383 | { | |
384 | gfc_current_form = FORM_FREE; | |
4c35d099 | 385 | main_input_filename = filename; |
db30e21c | 386 | gfc_warning_now (0, "Reading file %qs as free form", |
4daa149b | 387 | (filename[0] == '\0') ? "<stdin>" : filename); |
e0bcf78c TS |
388 | } |
389 | } | |
390 | ||
391 | /* If the user specified -fd-lines-as-{code|comments} verify that we're | |
392 | in fixed form. */ | |
393 | if (gfc_current_form == FORM_FREE) | |
394 | { | |
395 | if (gfc_option.flag_d_lines == 0) | |
db30e21c | 396 | gfc_warning_now (0, "%<-fd-lines-as-comments%> has no effect " |
a56abdcc | 397 | "in free form"); |
e0bcf78c | 398 | else if (gfc_option.flag_d_lines == 1) |
db30e21c | 399 | gfc_warning_now (0, "%<-fd-lines-as-code%> has no effect in free form"); |
aecfd035 TB |
400 | |
401 | if (warn_line_truncation == -1) | |
402 | warn_line_truncation = 1; | |
403 | ||
404 | /* Enable -Werror=line-truncation when -Werror and -Wno-error have | |
405 | not been set. */ | |
00f34291 | 406 | if (warn_line_truncation && !OPTION_SET_P (warnings_are_errors) |
8200cd97 | 407 | && option_unspecified_p (OPT_Wline_truncation)) |
aecfd035 TB |
408 | diagnostic_classify_diagnostic (global_dc, OPT_Wline_truncation, |
409 | DK_ERROR, UNKNOWN_LOCATION); | |
e0bcf78c | 410 | } |
57e1270f FR |
411 | else |
412 | { | |
413 | /* With -fdec, set -fd-lines-as-comments by default in fixed form. */ | |
414 | if (flag_dec && gfc_option.flag_d_lines == -1) | |
415 | gfc_option.flag_d_lines = 0; | |
416 | ||
417 | if (warn_line_truncation == -1) | |
418 | warn_line_truncation = 0; | |
419 | } | |
6de9cd9a | 420 | |
fc2d8429 RS |
421 | /* If -pedantic, warn about the use of GNU extensions. */ |
422 | if (pedantic && (gfc_option.allow_std & GFC_STD_GNU) != 0) | |
423 | gfc_option.warn_std |= GFC_STD_GNU; | |
c0309c74 RS |
424 | /* -std=legacy -pedantic is effectively -std=gnu. */ |
425 | if (pedantic && (gfc_option.allow_std & GFC_STD_LEGACY) != 0) | |
426 | gfc_option.warn_std |= GFC_STD_F95_OBS | GFC_STD_F95_DEL | GFC_STD_LEGACY; | |
fc2d8429 | 427 | |
973ff4c0 TS |
428 | /* If the user didn't explicitly specify -f(no)-second-underscore we |
429 | use it if we're trying to be compatible with f2c, and not | |
430 | otherwise. */ | |
203c7ebf | 431 | if (flag_second_underscore == -1) |
c61819ff | 432 | flag_second_underscore = flag_f2c; |
973ff4c0 | 433 | |
c61819ff | 434 | if (!flag_automatic && flag_max_stack_var_size != -2 |
203c7ebf | 435 | && flag_max_stack_var_size != 0) |
db30e21c | 436 | gfc_warning_now (0, "Flag %<-fno-automatic%> overwrites %<-fmax-stack-var-size=%d%>", |
203c7ebf | 437 | flag_max_stack_var_size); |
c61819ff | 438 | else if (!flag_automatic && flag_recursive) |
91c4891a ME |
439 | gfc_warning_now (OPT_Woverwrite_recursive, "Flag %<-fno-automatic%> " |
440 | "overwrites %<-frecursive%>"); | |
f4e7ea81 TB |
441 | else if (!flag_automatic && (flag_openmp || flag_openacc)) |
442 | gfc_warning_now (0, "Flag %<-fno-automatic%> overwrites %<-frecursive%> " | |
443 | "implied by %qs", flag_openmp ? "-fopenmp" : "-fopenacc"); | |
c61819ff | 444 | else if (flag_max_stack_var_size != -2 && flag_recursive) |
db30e21c | 445 | gfc_warning_now (0, "Flag %<-frecursive%> overwrites %<-fmax-stack-var-size=%d%>", |
203c7ebf | 446 | flag_max_stack_var_size); |
f4e7ea81 TB |
447 | else if (flag_max_stack_var_size != -2 && (flag_openmp || flag_openacc)) |
448 | gfc_warning_now (0, "Flag %<-fmax-stack-var-size=%d%> overwrites " | |
449 | "%<-frecursive%> implied by %qs", flag_max_stack_var_size, | |
450 | flag_openmp ? "-fopenmp" : "-fopenacc"); | |
1e7de83b | 451 | |
653f6dc5 | 452 | /* Implement -frecursive as -fmax-stack-var-size=-1. */ |
c61819ff | 453 | if (flag_recursive) |
203c7ebf | 454 | flag_max_stack_var_size = -1; |
1e7de83b | 455 | |
653f6dc5 | 456 | /* Implied -frecursive; implemented as -fmax-stack-var-size=-1. */ |
f4e7ea81 TB |
457 | if (flag_max_stack_var_size == -2 && flag_automatic |
458 | && (flag_openmp || flag_openacc)) | |
653f6dc5 | 459 | { |
c61819ff | 460 | flag_recursive = 1; |
203c7ebf | 461 | flag_max_stack_var_size = -1; |
653f6dc5 TB |
462 | } |
463 | ||
950a884b TK |
464 | /* Set flag_stack_arrays correctly. */ |
465 | if (flag_stack_arrays == -1) | |
466 | flag_stack_arrays = 0; | |
467 | ||
1e7de83b | 468 | /* Set default. */ |
203c7ebf | 469 | if (flag_max_stack_var_size == -2) |
54320207 | 470 | flag_max_stack_var_size = 65536; |
1e7de83b | 471 | |
d05d9ac7 | 472 | /* Implement -fno-automatic as -fmax-stack-var-size=0. */ |
c61819ff | 473 | if (!flag_automatic) |
203c7ebf | 474 | flag_max_stack_var_size = 0; |
3fbab549 | 475 | |
c7b608a9 TK |
476 | /* If the user did not specify an inline matmul limit, inline up to the BLAS |
477 | limit or up to 30 if no external BLAS is specified. */ | |
f1abbf69 | 478 | |
c7b608a9 TK |
479 | if (flag_inline_matmul_limit < 0) |
480 | { | |
481 | if (flag_external_blas) | |
482 | flag_inline_matmul_limit = flag_blas_matmul_limit; | |
483 | else | |
484 | flag_inline_matmul_limit = 30; | |
485 | } | |
f1abbf69 | 486 | |
51a30b32 TK |
487 | /* Optimization implies front end optimization, unless the user |
488 | specified it directly. */ | |
489 | ||
203c7ebf | 490 | if (flag_frontend_optimize == -1) |
bf9197df | 491 | flag_frontend_optimize = optimize && !optimize_debug; |
203c7ebf | 492 | |
d88412fc TK |
493 | /* Same for front end loop interchange. */ |
494 | ||
495 | if (flag_frontend_loop_interchange == -1) | |
496 | flag_frontend_loop_interchange = optimize; | |
497 | ||
95d27703 TK |
498 | /* Do inline packing by default if optimizing, but not if |
499 | optimizing for size. */ | |
500 | if (flag_inline_arg_packing == -1) | |
501 | flag_inline_arg_packing = optimize && !optimize_size; | |
502 | ||
c61819ff TB |
503 | if (flag_max_array_constructor < 65535) |
504 | flag_max_array_constructor = 65535; | |
505 | ||
203c7ebf TB |
506 | if (flag_fixed_line_length != 0 && flag_fixed_line_length < 7) |
507 | gfc_fatal_error ("Fixed line length must be at least seven"); | |
508 | ||
509 | if (flag_free_line_length != 0 && flag_free_line_length < 4) | |
510 | gfc_fatal_error ("Free line length must be at least three"); | |
511 | ||
512 | if (flag_max_subrecord_length > MAX_SUBRECORD_LENGTH) | |
513 | gfc_fatal_error ("Maximum subrecord length cannot exceed %d", | |
514 | MAX_SUBRECORD_LENGTH); | |
51a30b32 | 515 | |
83aac698 | 516 | gfc_cpp_post_options (verbose_missing_dir_warn); |
670637ee | 517 | |
de3aebff JJ |
518 | if (gfc_option.allow_std & GFC_STD_F2008) |
519 | lang_hooks.name = "GNU Fortran2008"; | |
520 | else if (gfc_option.allow_std & GFC_STD_F2003) | |
521 | lang_hooks.name = "GNU Fortran2003"; | |
522 | ||
566916e6 | 523 | return gfc_cpp_preprocess_only (); |
6de9cd9a DN |
524 | } |
525 | ||
526 | ||
6de9cd9a DN |
527 | static void |
528 | gfc_handle_module_path_options (const char *arg) | |
529 | { | |
530 | ||
531 | if (gfc_option.module_dir != NULL) | |
ddc05d11 | 532 | gfc_fatal_error ("gfortran: Only one %<-J%> option allowed"); |
6de9cd9a | 533 | |
93acb62c | 534 | gfc_option.module_dir = XCNEWVEC (char, strlen (arg) + 2); |
6de9cd9a | 535 | strcpy (gfc_option.module_dir, arg); |
7376d710 | 536 | |
417ea5c0 | 537 | gfc_add_include_path (gfc_option.module_dir, true, false, true, true); |
22b00a9f TB |
538 | |
539 | strcat (gfc_option.module_dir, "/"); | |
6de9cd9a DN |
540 | } |
541 | ||
edf1eac2 | 542 | |
fa86f4f9 TB |
543 | /* Handle options -ffpe-trap= and -ffpe-summary=. */ |
544 | ||
944b8b35 | 545 | static void |
fa86f4f9 | 546 | gfc_handle_fpe_option (const char *arg, bool trap) |
944b8b35 FXC |
547 | { |
548 | int result, pos = 0, n; | |
57b4d355 | 549 | /* precision is a backwards compatibility alias for inexact. */ |
944b8b35 | 550 | static const char * const exception[] = { "invalid", "denormal", "zero", |
edf1eac2 | 551 | "overflow", "underflow", |
57b4d355 | 552 | "inexact", "precision", NULL }; |
944b8b35 FXC |
553 | static const int opt_exception[] = { GFC_FPE_INVALID, GFC_FPE_DENORMAL, |
554 | GFC_FPE_ZERO, GFC_FPE_OVERFLOW, | |
57b4d355 JB |
555 | GFC_FPE_UNDERFLOW, GFC_FPE_INEXACT, |
556 | GFC_FPE_INEXACT, | |
944b8b35 | 557 | 0 }; |
fa86f4f9 | 558 | |
1cc0e193 | 559 | /* As the default for -ffpe-summary= is nonzero, set it to 0. */ |
fa86f4f9 TB |
560 | if (!trap) |
561 | gfc_option.fpe_summary = 0; | |
562 | ||
944b8b35 FXC |
563 | while (*arg) |
564 | { | |
565 | while (*arg == ',') | |
566 | arg++; | |
edf1eac2 | 567 | |
944b8b35 FXC |
568 | while (arg[pos] && arg[pos] != ',') |
569 | pos++; | |
edf1eac2 | 570 | |
944b8b35 | 571 | result = 0; |
458c253c | 572 | if (strncmp ("none", arg, pos) == 0) |
944b8b35 | 573 | { |
458c253c HA |
574 | if (trap) |
575 | gfc_option.fpe = 0; | |
576 | else | |
577 | gfc_option.fpe_summary = 0; | |
fa86f4f9 TB |
578 | arg += pos; |
579 | pos = 0; | |
580 | continue; | |
581 | } | |
582 | else if (!trap && strncmp ("all", arg, pos) == 0) | |
583 | { | |
584 | gfc_option.fpe_summary = GFC_FPE_INVALID | GFC_FPE_DENORMAL | |
585 | | GFC_FPE_ZERO | GFC_FPE_OVERFLOW | |
586 | | GFC_FPE_UNDERFLOW | GFC_FPE_INEXACT; | |
587 | arg += pos; | |
588 | pos = 0; | |
589 | continue; | |
590 | } | |
591 | else | |
592 | for (n = 0; exception[n] != NULL; n++) | |
593 | { | |
944b8b35 FXC |
594 | if (exception[n] && strncmp (exception[n], arg, pos) == 0) |
595 | { | |
fa86f4f9 TB |
596 | if (trap) |
597 | gfc_option.fpe |= opt_exception[n]; | |
598 | else | |
599 | gfc_option.fpe_summary |= opt_exception[n]; | |
944b8b35 FXC |
600 | arg += pos; |
601 | pos = 0; | |
602 | result = 1; | |
603 | break; | |
604 | } | |
fa86f4f9 | 605 | } |
458c253c | 606 | if (!result && trap) |
ddc05d11 | 607 | gfc_fatal_error ("Argument to %<-ffpe-trap%> is not valid: %s", arg); |
fa86f4f9 | 608 | else if (!result) |
ddc05d11 | 609 | gfc_fatal_error ("Argument to %<-ffpe-summary%> is not valid: %s", arg); |
fa86f4f9 | 610 | |
944b8b35 FXC |
611 | } |
612 | } | |
613 | ||
edf1eac2 | 614 | |
d3d3011f FXC |
615 | static void |
616 | gfc_handle_runtime_check_option (const char *arg) | |
617 | { | |
618 | int result, pos = 0, n; | |
619 | static const char * const optname[] = { "all", "bounds", "array-temps", | |
22bdbb0f | 620 | "recursion", "do", "pointer", |
df1afcca | 621 | "mem", "bits", NULL }; |
d3d3011f FXC |
622 | static const int optmask[] = { GFC_RTCHECK_ALL, GFC_RTCHECK_BOUNDS, |
623 | GFC_RTCHECK_ARRAY_TEMPS, | |
33abc845 | 624 | GFC_RTCHECK_RECURSION, GFC_RTCHECK_DO, |
22bdbb0f | 625 | GFC_RTCHECK_POINTER, GFC_RTCHECK_MEM, |
df1afcca | 626 | GFC_RTCHECK_BITS, 0 }; |
d3d3011f FXC |
627 | |
628 | while (*arg) | |
629 | { | |
630 | while (*arg == ',') | |
631 | arg++; | |
632 | ||
633 | while (arg[pos] && arg[pos] != ',') | |
634 | pos++; | |
635 | ||
636 | result = 0; | |
637 | for (n = 0; optname[n] != NULL; n++) | |
638 | { | |
639 | if (optname[n] && strncmp (optname[n], arg, pos) == 0) | |
640 | { | |
641 | gfc_option.rtcheck |= optmask[n]; | |
642 | arg += pos; | |
643 | pos = 0; | |
644 | result = 1; | |
645 | break; | |
646 | } | |
6ba3079d | 647 | else if (optname[n] && pos > 3 && startswith (arg, "no-") |
a4c54bf2 JD |
648 | && strncmp (optname[n], arg+3, pos-3) == 0) |
649 | { | |
650 | gfc_option.rtcheck &= ~optmask[n]; | |
651 | arg += pos; | |
652 | pos = 0; | |
653 | result = 1; | |
654 | break; | |
655 | } | |
d3d3011f FXC |
656 | } |
657 | if (!result) | |
ddc05d11 | 658 | gfc_fatal_error ("Argument to %<-fcheck%> is not valid: %s", arg); |
d3d3011f FXC |
659 | } |
660 | } | |
661 | ||
662 | ||
6de9cd9a DN |
663 | /* Handle command-line options. Returns 0 if unrecognized, 1 if |
664 | recognized and handled. */ | |
edf1eac2 | 665 | |
5f20c657 | 666 | bool |
00abf86c | 667 | gfc_handle_option (size_t scode, const char *arg, HOST_WIDE_INT value, |
a4d8c676 | 668 | int kind ATTRIBUTE_UNUSED, location_t loc ATTRIBUTE_UNUSED, |
5f20c657 | 669 | const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED) |
6de9cd9a | 670 | { |
5f20c657 | 671 | bool result = true; |
6de9cd9a DN |
672 | enum opt_code code = (enum opt_code) scode; |
673 | ||
670637ee | 674 | if (gfc_cpp_handle_option (scode, arg, value) == 1) |
5f20c657 | 675 | return true; |
670637ee | 676 | |
6de9cd9a DN |
677 | switch (code) |
678 | { | |
679 | default: | |
7c02f68b MLI |
680 | if (cl_options[code].flags & gfc_option_lang_mask ()) |
681 | break; | |
5f20c657 | 682 | result = false; |
6de9cd9a DN |
683 | break; |
684 | ||
0d52899f | 685 | case OPT_fcheck_array_temporaries: |
c3e799e1 | 686 | SET_BITFLAG (gfc_option.rtcheck, value, GFC_RTCHECK_ARRAY_TEMPS); |
0d52899f TB |
687 | break; |
688 | ||
e0bcf78c TS |
689 | case OPT_fd_lines_as_code: |
690 | gfc_option.flag_d_lines = 1; | |
691 | break; | |
692 | ||
693 | case OPT_fd_lines_as_comments: | |
694 | gfc_option.flag_d_lines = 0; | |
695 | break; | |
696 | ||
6de9cd9a DN |
697 | case OPT_ffixed_form: |
698 | gfc_option.source_form = FORM_FIXED; | |
699 | break; | |
700 | ||
701 | case OPT_ffree_form: | |
702 | gfc_option.source_form = FORM_FREE; | |
703 | break; | |
704 | ||
31198773 | 705 | case OPT_fintrinsic_modules_path: |
f34dea03 | 706 | case OPT_fintrinsic_modules_path_: |
308f961b TK |
707 | |
708 | /* This is needed because omp_lib.h is in a directory together | |
709 | with intrinsic modules. Do no warn because during testing | |
710 | without an installed compiler, we would get lots of bogus | |
711 | warnings for a missing include directory. */ | |
417ea5c0 | 712 | gfc_add_include_path (arg, false, false, false, true); |
308f961b | 713 | |
31198773 FXC |
714 | gfc_add_intrinsic_modules_path (arg); |
715 | break; | |
716 | ||
2d7c7df6 JJ |
717 | case OPT_fpreprocessed: |
718 | gfc_option.flag_preprocessed = value; | |
719 | break; | |
720 | ||
6de9cd9a DN |
721 | case OPT_fmax_identifier_length_: |
722 | if (value > GFC_MAX_SYMBOL_LEN) | |
eb6d74fa | 723 | gfc_fatal_error ("Maximum supported identifier length is %d", |
6de9cd9a DN |
724 | GFC_MAX_SYMBOL_LEN); |
725 | gfc_option.max_identifier_length = value; | |
726 | break; | |
727 | ||
51b09ce3 | 728 | case OPT_finit_local_zero: |
c3e799e1 | 729 | set_init_local_zero (value); |
51b09ce3 AL |
730 | break; |
731 | ||
732 | case OPT_finit_logical_: | |
733 | if (!strcasecmp (arg, "false")) | |
734 | gfc_option.flag_init_logical = GFC_INIT_LOGICAL_FALSE; | |
735 | else if (!strcasecmp (arg, "true")) | |
736 | gfc_option.flag_init_logical = GFC_INIT_LOGICAL_TRUE; | |
737 | else | |
ddc05d11 | 738 | gfc_fatal_error ("Unrecognized option to %<-finit-logical%>: %s", |
51b09ce3 AL |
739 | arg); |
740 | break; | |
741 | ||
51b09ce3 AL |
742 | case OPT_finit_integer_: |
743 | gfc_option.flag_init_integer = GFC_INIT_INTEGER_ON; | |
66086032 | 744 | gfc_option.flag_init_integer_value = strtol (arg, NULL, 10); |
51b09ce3 AL |
745 | break; |
746 | ||
747 | case OPT_finit_character_: | |
748 | if (value >= 0 && value <= 127) | |
749 | { | |
750 | gfc_option.flag_init_character = GFC_INIT_CHARACTER_ON; | |
751 | gfc_option.flag_init_character_value = (char)value; | |
752 | } | |
753 | else | |
ddc05d11 | 754 | gfc_fatal_error ("The value of n in %<-finit-character=n%> must be " |
51b09ce3 AL |
755 | "between 0 and 127"); |
756 | break; | |
757 | ||
6de9cd9a | 758 | case OPT_I: |
417ea5c0 | 759 | gfc_add_include_path (arg, true, false, true, true); |
6de9cd9a DN |
760 | break; |
761 | ||
762 | case OPT_J: | |
6de9cd9a | 763 | gfc_handle_module_path_options (arg); |
2d0b4bcd | 764 | break; |
ccc2ed87 | 765 | |
944b8b35 | 766 | case OPT_ffpe_trap_: |
fa86f4f9 TB |
767 | gfc_handle_fpe_option (arg, true); |
768 | break; | |
769 | ||
770 | case OPT_ffpe_summary_: | |
771 | gfc_handle_fpe_option (arg, false); | |
944b8b35 FXC |
772 | break; |
773 | ||
6de9cd9a | 774 | case OPT_std_f95: |
67e9518e | 775 | gfc_option.allow_std = GFC_STD_OPT_F95; |
6de9cd9a | 776 | gfc_option.warn_std = GFC_STD_F95_OBS; |
dfbfb630 JD |
777 | gfc_option.max_continue_fixed = 19; |
778 | gfc_option.max_continue_free = 39; | |
6de9cd9a | 779 | gfc_option.max_identifier_length = 31; |
73e42eef | 780 | warn_ampersand = 1; |
16db2a6a | 781 | warn_tabs = 1; |
6de9cd9a DN |
782 | break; |
783 | ||
784 | case OPT_std_f2003: | |
67e9518e | 785 | gfc_option.allow_std = GFC_STD_OPT_F03; |
b7892582 | 786 | gfc_option.warn_std = GFC_STD_F95_OBS; |
b9eba3ba TB |
787 | gfc_option.max_continue_fixed = 255; |
788 | gfc_option.max_continue_free = 255; | |
6de9cd9a | 789 | gfc_option.max_identifier_length = 63; |
73e42eef | 790 | warn_ampersand = 1; |
16db2a6a | 791 | warn_tabs = 1; |
6de9cd9a DN |
792 | break; |
793 | ||
f489fba1 | 794 | case OPT_std_f2008: |
67e9518e | 795 | gfc_option.allow_std = GFC_STD_OPT_F08; |
58fc89f6 | 796 | gfc_option.warn_std = GFC_STD_F95_OBS | GFC_STD_F2008_OBS; |
b9eba3ba TB |
797 | gfc_option.max_continue_free = 255; |
798 | gfc_option.max_continue_fixed = 255; | |
f489fba1 | 799 | gfc_option.max_identifier_length = 63; |
73e42eef | 800 | warn_ampersand = 1; |
16db2a6a | 801 | warn_tabs = 1; |
f489fba1 FXC |
802 | break; |
803 | ||
4650947d | 804 | case OPT_std_f2008ts: |
8179b067 | 805 | case OPT_std_f2018: |
67e9518e | 806 | gfc_option.allow_std = GFC_STD_OPT_F18; |
b9eba3ba TB |
807 | gfc_option.warn_std = GFC_STD_F95_OBS | GFC_STD_F2008_OBS |
808 | | GFC_STD_F2018_OBS; | |
809 | gfc_option.max_continue_free = 255; | |
810 | gfc_option.max_continue_fixed = 255; | |
811 | gfc_option.max_identifier_length = 63; | |
812 | warn_ampersand = 1; | |
813 | warn_tabs = 1; | |
814 | break; | |
815 | ||
816 | case OPT_std_f2023: | |
817 | gfc_option.allow_std = GFC_STD_OPT_F23; | |
8179b067 JB |
818 | gfc_option.warn_std = GFC_STD_F95_OBS | GFC_STD_F2008_OBS |
819 | | GFC_STD_F2018_OBS; | |
820 | gfc_option.max_identifier_length = 63; | |
821 | warn_ampersand = 1; | |
822 | warn_tabs = 1; | |
823 | break; | |
824 | ||
6de9cd9a | 825 | case OPT_std_gnu: |
a47eec17 | 826 | set_default_std_flags (); |
c0309c74 RS |
827 | break; |
828 | ||
829 | case OPT_std_legacy: | |
a47eec17 | 830 | set_default_std_flags (); |
c0309c74 | 831 | gfc_option.warn_std = 0; |
b7892582 JB |
832 | break; |
833 | ||
25d8f0a2 | 834 | case OPT_fshort_enums: |
5498f011 | 835 | /* Handled in language-independent code. */ |
25d8f0a2 | 836 | break; |
eaa90d25 | 837 | |
d3d3011f FXC |
838 | case OPT_fcheck_: |
839 | gfc_handle_runtime_check_option (arg); | |
840 | break; | |
f6288c24 FR |
841 | |
842 | case OPT_fdec: | |
c3e799e1 FR |
843 | /* Set (or unset) the DEC extension flags. */ |
844 | set_dec_flags (value); | |
f6288c24 | 845 | break; |
6de9cd9a DN |
846 | } |
847 | ||
f2bc201f MLI |
848 | Fortran_handle_option_auto (&global_options, &global_options_set, |
849 | scode, arg, value, | |
850 | gfc_option_lang_mask (), kind, | |
851 | loc, handlers, global_dc); | |
6de9cd9a DN |
852 | return result; |
853 | } | |
41804a5b TB |
854 | |
855 | ||
856 | /* Return a string with the options passed to the compiler; used for | |
857 | Fortran's compiler_options() intrinsic. */ | |
858 | ||
859 | char * | |
860 | gfc_get_option_string (void) | |
861 | { | |
862 | unsigned j; | |
863 | size_t len, pos; | |
864 | char *result; | |
865 | ||
58b2a358 TB |
866 | /* Allocate and return a one-character string with '\0'. */ |
867 | if (!save_decoded_options_count) | |
868 | return XCNEWVEC (char, 1); | |
869 | ||
41804a5b TB |
870 | /* Determine required string length. */ |
871 | ||
872 | len = 0; | |
873 | for (j = 1; j < save_decoded_options_count; j++) | |
874 | { | |
875 | switch (save_decoded_options[j].opt_index) | |
876 | { | |
877 | case OPT_o: | |
878 | case OPT_d: | |
879 | case OPT_dumpbase: | |
1dedc12d | 880 | case OPT_dumpbase_ext: |
41804a5b | 881 | case OPT_dumpdir: |
41804a5b TB |
882 | case OPT_quiet: |
883 | case OPT_version: | |
884 | case OPT_fintrinsic_modules_path: | |
f34dea03 | 885 | case OPT_fintrinsic_modules_path_: |
41804a5b TB |
886 | /* Ignore these. */ |
887 | break; | |
888 | default: | |
1cc0e193 | 889 | /* Ignore file names. */ |
41804a5b TB |
890 | if (save_decoded_options[j].orig_option_with_args_text[0] == '-') |
891 | len += 1 | |
892 | + strlen (save_decoded_options[j].orig_option_with_args_text); | |
893 | } | |
894 | } | |
895 | ||
93acb62c | 896 | result = XCNEWVEC (char, len); |
41804a5b TB |
897 | |
898 | pos = 0; | |
899 | for (j = 1; j < save_decoded_options_count; j++) | |
900 | { | |
901 | switch (save_decoded_options[j].opt_index) | |
902 | { | |
903 | case OPT_o: | |
904 | case OPT_d: | |
905 | case OPT_dumpbase: | |
1dedc12d | 906 | case OPT_dumpbase_ext: |
41804a5b | 907 | case OPT_dumpdir: |
41804a5b TB |
908 | case OPT_quiet: |
909 | case OPT_version: | |
910 | case OPT_fintrinsic_modules_path: | |
f34dea03 | 911 | case OPT_fintrinsic_modules_path_: |
41804a5b TB |
912 | /* Ignore these. */ |
913 | continue; | |
914 | ||
915 | case OPT_cpp_: | |
916 | /* Use "-cpp" rather than "-cpp=<temporary file>". */ | |
917 | len = 4; | |
918 | break; | |
919 | ||
920 | default: | |
1cc0e193 | 921 | /* Ignore file names. */ |
41804a5b TB |
922 | if (save_decoded_options[j].orig_option_with_args_text[0] != '-') |
923 | continue; | |
924 | ||
925 | len = strlen (save_decoded_options[j].orig_option_with_args_text); | |
926 | } | |
927 | ||
928 | memcpy (&result[pos], save_decoded_options[j].orig_option_with_args_text, len); | |
929 | pos += len; | |
930 | result[pos++] = ' '; | |
931 | } | |
932 | ||
933 | result[--pos] = '\0'; | |
934 | return result; | |
935 | } | |
c3e799e1 FR |
936 | |
937 | #undef SET_BITFLAG | |
938 | #undef SET_BITFLAG2 | |
939 | #undef SET_FLAG |