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6de9cd9a | 1 | /* Parse and display command line options. |
83ffe9cd | 2 | Copyright (C) 2000-2023 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 |
8179b067 | 60 | | GFC_STD_F2018 | GFC_STD_F2018_DEL | GFC_STD_F2018_OBS; |
67e9518e | 61 | gfc_option.warn_std = GFC_STD_F2018_DEL | GFC_STD_F95_DEL | GFC_STD_LEGACY; |
a47eec17 JD |
62 | } |
63 | ||
7ed760c7 | 64 | /* Set (or unset) the DEC extension flags. */ |
f6288c24 FR |
65 | |
66 | static void | |
67 | set_dec_flags (int value) | |
68 | { | |
7ed760c7 FR |
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); | |
88a8126a | 77 | SET_BITFLAG (flag_dec_format_defaults, value, value); |
17f62b7e | 78 | SET_BITFLAG (flag_dec_blank_format_item, value, value); |
2afeb1ca | 79 | SET_BITFLAG (flag_dec_char_conversions, value, value); |
7ed760c7 FR |
80 | } |
81 | ||
82 | /* Finalize DEC flags. */ | |
83 | ||
84 | static void | |
85 | post_dec_flags (int value) | |
86 | { | |
87 | /* Don't warn for legacy code if -fdec is given; however, setting -fno-dec | |
88 | does not force these warnings. We make one final determination on this | |
89 | at the end because -std= is always set first; thus, we can avoid | |
90 | clobbering the user's desired standard settings in gfc_handle_option | |
91 | e.g. when -fdec and -fno-dec are both given. */ | |
7c23ac0d FR |
92 | if (value) |
93 | { | |
7c23ac0d | 94 | gfc_option.allow_std |= GFC_STD_F95_OBS | GFC_STD_F95_DEL |
7ed760c7 | 95 | | GFC_STD_GNU | GFC_STD_LEGACY; |
7c23ac0d FR |
96 | gfc_option.warn_std &= ~(GFC_STD_LEGACY | GFC_STD_F95_DEL); |
97 | } | |
f6288c24 FR |
98 | } |
99 | ||
7ed760c7 FR |
100 | /* Enable (or disable) -finit-local-zero. */ |
101 | ||
102 | static void | |
103 | set_init_local_zero (int value) | |
104 | { | |
105 | gfc_option.flag_init_integer_value = 0; | |
106 | gfc_option.flag_init_character_value = (char)0; | |
107 | ||
108 | SET_FLAG (gfc_option.flag_init_integer, value, GFC_INIT_INTEGER_ON, | |
109 | GFC_INIT_INTEGER_OFF); | |
110 | SET_FLAG (gfc_option.flag_init_logical, value, GFC_INIT_LOGICAL_FALSE, | |
111 | GFC_INIT_LOGICAL_OFF); | |
112 | SET_FLAG (gfc_option.flag_init_character, value, GFC_INIT_CHARACTER_ON, | |
113 | GFC_INIT_CHARACTER_OFF); | |
114 | SET_FLAG (flag_init_real, value, GFC_INIT_REAL_ZERO, GFC_INIT_REAL_OFF); | |
115 | } | |
f6288c24 | 116 | |
7a9bf9a4 JM |
117 | /* Return language mask for Fortran options. */ |
118 | ||
119 | unsigned int | |
120 | gfc_option_lang_mask (void) | |
121 | { | |
122 | return CL_Fortran; | |
123 | } | |
124 | ||
a75bfaa6 JM |
125 | /* Initialize options structure OPTS. */ |
126 | ||
127 | void | |
128 | gfc_init_options_struct (struct gcc_options *opts) | |
129 | { | |
130 | opts->x_flag_errno_math = 0; | |
321bff11 | 131 | opts->frontend_set_flag_errno_math = true; |
a75bfaa6 | 132 | opts->x_flag_associative_math = -1; |
321bff11 | 133 | opts->frontend_set_flag_associative_math = true; |
a75bfaa6 | 134 | } |
7a9bf9a4 | 135 | |
5fb41e29 | 136 | /* Get ready for options handling. Keep in sync with |
1cc0e193 | 137 | libgfortran/runtime/compile_options.c (init_compile_options). */ |
6de9cd9a | 138 | |
7a9bf9a4 JM |
139 | void |
140 | gfc_init_options (unsigned int decoded_options_count, | |
141 | struct cl_decoded_option *decoded_options) | |
6de9cd9a | 142 | { |
e0bcf78c | 143 | gfc_source_file = NULL; |
6de9cd9a DN |
144 | gfc_option.module_dir = NULL; |
145 | gfc_option.source_form = FORM_UNKNOWN; | |
dfbfb630 JD |
146 | gfc_option.max_continue_fixed = 255; |
147 | gfc_option.max_continue_free = 255; | |
6de9cd9a | 148 | gfc_option.max_identifier_length = GFC_MAX_SYMBOL_LEN; |
3f139fcf | 149 | gfc_option.max_errors = 25; |
6de9cd9a | 150 | |
2d7c7df6 | 151 | gfc_option.flag_preprocessed = 0; |
e0bcf78c | 152 | gfc_option.flag_d_lines = -1; |
c3e799e1 | 153 | set_init_local_zero (0); |
51b09ce3 | 154 | |
944b8b35 | 155 | gfc_option.fpe = 0; |
fa86f4f9 TB |
156 | /* All except GFC_FPE_INEXACT. */ |
157 | gfc_option.fpe_summary = GFC_FPE_INVALID | GFC_FPE_DENORMAL | |
158 | | GFC_FPE_ZERO | GFC_FPE_OVERFLOW | |
159 | | GFC_FPE_UNDERFLOW; | |
d3d3011f | 160 | gfc_option.rtcheck = 0; |
944b8b35 | 161 | |
f6288c24 | 162 | set_dec_flags (0); |
a47eec17 | 163 | set_default_std_flags (); |
6de9cd9a | 164 | |
670637ee | 165 | /* Initialize cpp-related options. */ |
7a9bf9a4 | 166 | gfc_cpp_init_options (decoded_options_count, decoded_options); |
8e54f6d3 | 167 | gfc_diagnostics_init (); |
6de9cd9a DN |
168 | } |
169 | ||
170 | ||
e0bcf78c TS |
171 | /* Determine the source form from the filename extension. We assume |
172 | case insensitivity. */ | |
173 | ||
174 | static gfc_source_form | |
175 | form_from_filename (const char *filename) | |
176 | { | |
e0bcf78c TS |
177 | static const struct |
178 | { | |
179 | const char *extension; | |
180 | gfc_source_form form; | |
181 | } | |
182 | exttype[] = | |
183 | { | |
184 | { | |
185 | ".f90", FORM_FREE} | |
186 | , | |
187 | { | |
188 | ".f95", FORM_FREE} | |
189 | , | |
190 | { | |
7befd5d2 TB |
191 | ".f03", FORM_FREE} |
192 | , | |
193 | { | |
f489fba1 FXC |
194 | ".f08", FORM_FREE} |
195 | , | |
196 | { | |
e0bcf78c TS |
197 | ".f", FORM_FIXED} |
198 | , | |
199 | { | |
200 | ".for", FORM_FIXED} | |
201 | , | |
202 | { | |
1200489c TB |
203 | ".ftn", FORM_FIXED} |
204 | , | |
205 | { | |
e0bcf78c TS |
206 | "", FORM_UNKNOWN} |
207 | }; /* sentinel value */ | |
208 | ||
209 | gfc_source_form f_form; | |
210 | const char *fileext; | |
211 | int i; | |
212 | ||
213 | /* Find end of file name. Note, filename is either a NULL pointer or | |
214 | a NUL terminated string. */ | |
215 | i = 0; | |
216 | while (filename[i] != '\0') | |
217 | i++; | |
218 | ||
219 | /* Find last period. */ | |
220 | while (i >= 0 && (filename[i] != '.')) | |
221 | i--; | |
222 | ||
223 | /* Did we see a file extension? */ | |
224 | if (i < 0) | |
225 | return FORM_UNKNOWN; /* Nope */ | |
226 | ||
227 | /* Get file extension and compare it to others. */ | |
228 | fileext = &(filename[i]); | |
229 | ||
230 | i = -1; | |
231 | f_form = FORM_UNKNOWN; | |
232 | do | |
233 | { | |
234 | i++; | |
235 | if (strcasecmp (fileext, exttype[i].extension) == 0) | |
236 | { | |
237 | f_form = exttype[i].form; | |
238 | break; | |
239 | } | |
240 | } | |
241 | while (exttype[i].form != FORM_UNKNOWN); | |
242 | ||
243 | return f_form; | |
244 | } | |
245 | ||
246 | ||
6de9cd9a DN |
247 | /* Finalize commandline options. */ |
248 | ||
249 | bool | |
250 | gfc_post_options (const char **pfilename) | |
251 | { | |
2d7c7df6 | 252 | const char *filename = *pfilename, *canon_source_file = NULL; |
b424a572 | 253 | char *source_path; |
83aac698 | 254 | bool verbose_missing_dir_warn; |
b424a572 | 255 | int i; |
6de9cd9a | 256 | |
417ea5c0 TB |
257 | /* This needs to be after the commandline has been processed. |
258 | In Fortran, the options is by default enabled, in C/C++ | |
83aac698 TB |
259 | by default disabled. |
260 | If not enabled explicitly by the user, only warn for -I | |
261 | and -J, otherwise warn for all include paths. */ | |
262 | verbose_missing_dir_warn | |
00f34291 | 263 | = (OPTION_SET_P (cpp_warn_missing_include_dirs) |
83aac698 | 264 | && global_options.x_cpp_warn_missing_include_dirs); |
417ea5c0 TB |
265 | SET_OPTION_IF_UNSET (&global_options, &global_options_set, |
266 | cpp_warn_missing_include_dirs, 1); | |
83aac698 | 267 | gfc_check_include_dirs (verbose_missing_dir_warn); |
417ea5c0 | 268 | |
c3e799e1 FR |
269 | /* Finalize DEC flags. */ |
270 | post_dec_flags (flag_dec); | |
271 | ||
8ce94e44 JM |
272 | /* Excess precision other than "fast" requires front-end |
273 | support. */ | |
df375b03 | 274 | if (flag_excess_precision == EXCESS_PRECISION_STANDARD) |
a3f9f006 | 275 | sorry ("%<-fexcess-precision=standard%> for Fortran"); |
f19a3270 | 276 | else if (flag_excess_precision == EXCESS_PRECISION_FLOAT16) |
277 | sorry ("%<-fexcess-precision=16%> for Fortran"); | |
278 | ||
df375b03 | 279 | flag_excess_precision = EXCESS_PRECISION_FAST; |
8ce94e44 | 280 | |
feef2551 TB |
281 | /* Fortran allows associative math - but we cannot reassociate if |
282 | we want traps or signed zeros. Cf. also flag_protect_parens. */ | |
283 | if (flag_associative_math == -1) | |
284 | flag_associative_math = (!flag_trapping_math && !flag_signed_zeros); | |
285 | ||
203c7ebf TB |
286 | if (flag_protect_parens == -1) |
287 | flag_protect_parens = !optimize_fast; | |
7a994646 | 288 | |
950a884b TK |
289 | /* -Ofast sets implies -fstack-arrays unless an explicit size is set for |
290 | stack arrays. */ | |
291 | if (flag_stack_arrays == -1 && flag_max_stack_var_size == -2) | |
203c7ebf | 292 | flag_stack_arrays = optimize_fast; |
2d8c9ad5 | 293 | |
597553ab | 294 | /* By default, disable (re)allocation during assignment for -std=f95, |
1cc0e193 | 295 | and enable it for F2003/F2008/GNU/Legacy. */ |
203c7ebf | 296 | if (flag_realloc_lhs == -1) |
597553ab PT |
297 | { |
298 | if (gfc_option.allow_std & GFC_STD_F2003) | |
203c7ebf | 299 | flag_realloc_lhs = 1; |
597553ab | 300 | else |
203c7ebf | 301 | flag_realloc_lhs = 0; |
597553ab PT |
302 | } |
303 | ||
d3d3011f FXC |
304 | /* -fbounds-check is equivalent to -fcheck=bounds */ |
305 | if (flag_bounds_check) | |
306 | gfc_option.rtcheck |= GFC_RTCHECK_BOUNDS; | |
307 | ||
2153915d | 308 | if (flag_compare_debug) |
c61819ff | 309 | flag_dump_fortran_original = 0; |
2153915d | 310 | |
3a789837 | 311 | /* Make -fmax-errors visible to gfortran's diagnostic machinery. */ |
00f34291 | 312 | if (OPTION_SET_P (flag_max_errors)) |
3a789837 NF |
313 | gfc_option.max_errors = flag_max_errors; |
314 | ||
6de9cd9a DN |
315 | /* Verify the input file name. */ |
316 | if (!filename || strcmp (filename, "-") == 0) | |
317 | { | |
318 | filename = ""; | |
319 | } | |
320 | ||
2d7c7df6 JJ |
321 | if (gfc_option.flag_preprocessed) |
322 | { | |
323 | /* For preprocessed files, if the first tokens are of the form # NUM. | |
324 | handle the directives so we know the original file name. */ | |
325 | gfc_source_file = gfc_read_orig_filename (filename, &canon_source_file); | |
326 | if (gfc_source_file == NULL) | |
327 | gfc_source_file = filename; | |
328 | else | |
329 | *pfilename = gfc_source_file; | |
330 | } | |
331 | else | |
332 | gfc_source_file = filename; | |
333 | ||
334 | if (canon_source_file == NULL) | |
335 | canon_source_file = gfc_source_file; | |
e0bcf78c | 336 | |
b424a572 FXC |
337 | /* Adds the path where the source file is to the list of include files. */ |
338 | ||
2d7c7df6 JJ |
339 | i = strlen (canon_source_file); |
340 | while (i > 0 && !IS_DIR_SEPARATOR (canon_source_file[i])) | |
b424a572 | 341 | i--; |
edf1eac2 | 342 | |
b424a572 FXC |
343 | if (i != 0) |
344 | { | |
ece3f663 | 345 | source_path = (char *) alloca (i + 1); |
2d7c7df6 | 346 | memcpy (source_path, canon_source_file, i); |
b424a572 | 347 | source_path[i] = 0; |
83aac698 TB |
348 | /* Only warn if the directory is different from the input file as |
349 | if that one is not found, already an error is shown. */ | |
350 | bool warn = gfc_option.flag_preprocessed && gfc_source_file != filename; | |
351 | gfc_add_include_path (source_path, true, true, warn, false); | |
b424a572 FXC |
352 | } |
353 | else | |
83aac698 | 354 | gfc_add_include_path (".", true, true, false, false); |
b424a572 | 355 | |
2d7c7df6 | 356 | if (canon_source_file != gfc_source_file) |
cede9502 | 357 | free (CONST_CAST (char *, canon_source_file)); |
2d7c7df6 | 358 | |
e0bcf78c TS |
359 | /* Decide which form the file will be read in as. */ |
360 | ||
361 | if (gfc_option.source_form != FORM_UNKNOWN) | |
362 | gfc_current_form = gfc_option.source_form; | |
363 | else | |
364 | { | |
365 | gfc_current_form = form_from_filename (filename); | |
366 | ||
367 | if (gfc_current_form == FORM_UNKNOWN) | |
368 | { | |
369 | gfc_current_form = FORM_FREE; | |
4c35d099 | 370 | main_input_filename = filename; |
db30e21c | 371 | gfc_warning_now (0, "Reading file %qs as free form", |
4daa149b | 372 | (filename[0] == '\0') ? "<stdin>" : filename); |
e0bcf78c TS |
373 | } |
374 | } | |
375 | ||
376 | /* If the user specified -fd-lines-as-{code|comments} verify that we're | |
377 | in fixed form. */ | |
378 | if (gfc_current_form == FORM_FREE) | |
379 | { | |
380 | if (gfc_option.flag_d_lines == 0) | |
db30e21c | 381 | gfc_warning_now (0, "%<-fd-lines-as-comments%> has no effect " |
a56abdcc | 382 | "in free form"); |
e0bcf78c | 383 | else if (gfc_option.flag_d_lines == 1) |
db30e21c | 384 | gfc_warning_now (0, "%<-fd-lines-as-code%> has no effect in free form"); |
aecfd035 TB |
385 | |
386 | if (warn_line_truncation == -1) | |
387 | warn_line_truncation = 1; | |
388 | ||
389 | /* Enable -Werror=line-truncation when -Werror and -Wno-error have | |
390 | not been set. */ | |
00f34291 | 391 | if (warn_line_truncation && !OPTION_SET_P (warnings_are_errors) |
aecfd035 TB |
392 | && (global_dc->classify_diagnostic[OPT_Wline_truncation] == |
393 | DK_UNSPECIFIED)) | |
394 | diagnostic_classify_diagnostic (global_dc, OPT_Wline_truncation, | |
395 | DK_ERROR, UNKNOWN_LOCATION); | |
e0bcf78c | 396 | } |
57e1270f FR |
397 | else |
398 | { | |
399 | /* With -fdec, set -fd-lines-as-comments by default in fixed form. */ | |
400 | if (flag_dec && gfc_option.flag_d_lines == -1) | |
401 | gfc_option.flag_d_lines = 0; | |
402 | ||
403 | if (warn_line_truncation == -1) | |
404 | warn_line_truncation = 0; | |
405 | } | |
6de9cd9a | 406 | |
fc2d8429 RS |
407 | /* If -pedantic, warn about the use of GNU extensions. */ |
408 | if (pedantic && (gfc_option.allow_std & GFC_STD_GNU) != 0) | |
409 | gfc_option.warn_std |= GFC_STD_GNU; | |
c0309c74 RS |
410 | /* -std=legacy -pedantic is effectively -std=gnu. */ |
411 | if (pedantic && (gfc_option.allow_std & GFC_STD_LEGACY) != 0) | |
412 | gfc_option.warn_std |= GFC_STD_F95_OBS | GFC_STD_F95_DEL | GFC_STD_LEGACY; | |
fc2d8429 | 413 | |
973ff4c0 TS |
414 | /* If the user didn't explicitly specify -f(no)-second-underscore we |
415 | use it if we're trying to be compatible with f2c, and not | |
416 | otherwise. */ | |
203c7ebf | 417 | if (flag_second_underscore == -1) |
c61819ff | 418 | flag_second_underscore = flag_f2c; |
973ff4c0 | 419 | |
c61819ff | 420 | if (!flag_automatic && flag_max_stack_var_size != -2 |
203c7ebf | 421 | && flag_max_stack_var_size != 0) |
db30e21c | 422 | gfc_warning_now (0, "Flag %<-fno-automatic%> overwrites %<-fmax-stack-var-size=%d%>", |
203c7ebf | 423 | flag_max_stack_var_size); |
c61819ff | 424 | else if (!flag_automatic && flag_recursive) |
91c4891a ME |
425 | gfc_warning_now (OPT_Woverwrite_recursive, "Flag %<-fno-automatic%> " |
426 | "overwrites %<-frecursive%>"); | |
f4e7ea81 TB |
427 | else if (!flag_automatic && (flag_openmp || flag_openacc)) |
428 | gfc_warning_now (0, "Flag %<-fno-automatic%> overwrites %<-frecursive%> " | |
429 | "implied by %qs", flag_openmp ? "-fopenmp" : "-fopenacc"); | |
c61819ff | 430 | else if (flag_max_stack_var_size != -2 && flag_recursive) |
db30e21c | 431 | gfc_warning_now (0, "Flag %<-frecursive%> overwrites %<-fmax-stack-var-size=%d%>", |
203c7ebf | 432 | flag_max_stack_var_size); |
f4e7ea81 TB |
433 | else if (flag_max_stack_var_size != -2 && (flag_openmp || flag_openacc)) |
434 | gfc_warning_now (0, "Flag %<-fmax-stack-var-size=%d%> overwrites " | |
435 | "%<-frecursive%> implied by %qs", flag_max_stack_var_size, | |
436 | flag_openmp ? "-fopenmp" : "-fopenacc"); | |
1e7de83b | 437 | |
653f6dc5 | 438 | /* Implement -frecursive as -fmax-stack-var-size=-1. */ |
c61819ff | 439 | if (flag_recursive) |
203c7ebf | 440 | flag_max_stack_var_size = -1; |
1e7de83b | 441 | |
653f6dc5 | 442 | /* Implied -frecursive; implemented as -fmax-stack-var-size=-1. */ |
f4e7ea81 TB |
443 | if (flag_max_stack_var_size == -2 && flag_automatic |
444 | && (flag_openmp || flag_openacc)) | |
653f6dc5 | 445 | { |
c61819ff | 446 | flag_recursive = 1; |
203c7ebf | 447 | flag_max_stack_var_size = -1; |
653f6dc5 TB |
448 | } |
449 | ||
950a884b TK |
450 | /* Set flag_stack_arrays correctly. */ |
451 | if (flag_stack_arrays == -1) | |
452 | flag_stack_arrays = 0; | |
453 | ||
1e7de83b | 454 | /* Set default. */ |
203c7ebf | 455 | if (flag_max_stack_var_size == -2) |
54320207 | 456 | flag_max_stack_var_size = 65536; |
1e7de83b | 457 | |
d05d9ac7 | 458 | /* Implement -fno-automatic as -fmax-stack-var-size=0. */ |
c61819ff | 459 | if (!flag_automatic) |
203c7ebf | 460 | flag_max_stack_var_size = 0; |
3fbab549 | 461 | |
c7b608a9 TK |
462 | /* If the user did not specify an inline matmul limit, inline up to the BLAS |
463 | limit or up to 30 if no external BLAS is specified. */ | |
f1abbf69 | 464 | |
c7b608a9 TK |
465 | if (flag_inline_matmul_limit < 0) |
466 | { | |
467 | if (flag_external_blas) | |
468 | flag_inline_matmul_limit = flag_blas_matmul_limit; | |
469 | else | |
470 | flag_inline_matmul_limit = 30; | |
471 | } | |
f1abbf69 | 472 | |
51a30b32 TK |
473 | /* Optimization implies front end optimization, unless the user |
474 | specified it directly. */ | |
475 | ||
203c7ebf | 476 | if (flag_frontend_optimize == -1) |
bf9197df | 477 | flag_frontend_optimize = optimize && !optimize_debug; |
203c7ebf | 478 | |
d88412fc TK |
479 | /* Same for front end loop interchange. */ |
480 | ||
481 | if (flag_frontend_loop_interchange == -1) | |
482 | flag_frontend_loop_interchange = optimize; | |
483 | ||
95d27703 TK |
484 | /* Do inline packing by default if optimizing, but not if |
485 | optimizing for size. */ | |
486 | if (flag_inline_arg_packing == -1) | |
487 | flag_inline_arg_packing = optimize && !optimize_size; | |
488 | ||
c61819ff TB |
489 | if (flag_max_array_constructor < 65535) |
490 | flag_max_array_constructor = 65535; | |
491 | ||
203c7ebf TB |
492 | if (flag_fixed_line_length != 0 && flag_fixed_line_length < 7) |
493 | gfc_fatal_error ("Fixed line length must be at least seven"); | |
494 | ||
495 | if (flag_free_line_length != 0 && flag_free_line_length < 4) | |
496 | gfc_fatal_error ("Free line length must be at least three"); | |
497 | ||
498 | if (flag_max_subrecord_length > MAX_SUBRECORD_LENGTH) | |
499 | gfc_fatal_error ("Maximum subrecord length cannot exceed %d", | |
500 | MAX_SUBRECORD_LENGTH); | |
51a30b32 | 501 | |
83aac698 | 502 | gfc_cpp_post_options (verbose_missing_dir_warn); |
670637ee | 503 | |
de3aebff JJ |
504 | if (gfc_option.allow_std & GFC_STD_F2008) |
505 | lang_hooks.name = "GNU Fortran2008"; | |
506 | else if (gfc_option.allow_std & GFC_STD_F2003) | |
507 | lang_hooks.name = "GNU Fortran2003"; | |
508 | ||
566916e6 | 509 | return gfc_cpp_preprocess_only (); |
6de9cd9a DN |
510 | } |
511 | ||
512 | ||
6de9cd9a DN |
513 | static void |
514 | gfc_handle_module_path_options (const char *arg) | |
515 | { | |
516 | ||
517 | if (gfc_option.module_dir != NULL) | |
ddc05d11 | 518 | gfc_fatal_error ("gfortran: Only one %<-J%> option allowed"); |
6de9cd9a | 519 | |
93acb62c | 520 | gfc_option.module_dir = XCNEWVEC (char, strlen (arg) + 2); |
6de9cd9a | 521 | strcpy (gfc_option.module_dir, arg); |
7376d710 | 522 | |
417ea5c0 | 523 | gfc_add_include_path (gfc_option.module_dir, true, false, true, true); |
22b00a9f TB |
524 | |
525 | strcat (gfc_option.module_dir, "/"); | |
6de9cd9a DN |
526 | } |
527 | ||
edf1eac2 | 528 | |
fa86f4f9 TB |
529 | /* Handle options -ffpe-trap= and -ffpe-summary=. */ |
530 | ||
944b8b35 | 531 | static void |
fa86f4f9 | 532 | gfc_handle_fpe_option (const char *arg, bool trap) |
944b8b35 FXC |
533 | { |
534 | int result, pos = 0, n; | |
57b4d355 | 535 | /* precision is a backwards compatibility alias for inexact. */ |
944b8b35 | 536 | static const char * const exception[] = { "invalid", "denormal", "zero", |
edf1eac2 | 537 | "overflow", "underflow", |
57b4d355 | 538 | "inexact", "precision", NULL }; |
944b8b35 FXC |
539 | static const int opt_exception[] = { GFC_FPE_INVALID, GFC_FPE_DENORMAL, |
540 | GFC_FPE_ZERO, GFC_FPE_OVERFLOW, | |
57b4d355 JB |
541 | GFC_FPE_UNDERFLOW, GFC_FPE_INEXACT, |
542 | GFC_FPE_INEXACT, | |
944b8b35 | 543 | 0 }; |
fa86f4f9 | 544 | |
1cc0e193 | 545 | /* As the default for -ffpe-summary= is nonzero, set it to 0. */ |
fa86f4f9 TB |
546 | if (!trap) |
547 | gfc_option.fpe_summary = 0; | |
548 | ||
944b8b35 FXC |
549 | while (*arg) |
550 | { | |
551 | while (*arg == ',') | |
552 | arg++; | |
edf1eac2 | 553 | |
944b8b35 FXC |
554 | while (arg[pos] && arg[pos] != ',') |
555 | pos++; | |
edf1eac2 | 556 | |
944b8b35 | 557 | result = 0; |
fa86f4f9 | 558 | if (!trap && strncmp ("none", arg, pos) == 0) |
944b8b35 | 559 | { |
fa86f4f9 TB |
560 | gfc_option.fpe_summary = 0; |
561 | arg += pos; | |
562 | pos = 0; | |
563 | continue; | |
564 | } | |
565 | else if (!trap && strncmp ("all", arg, pos) == 0) | |
566 | { | |
567 | gfc_option.fpe_summary = GFC_FPE_INVALID | GFC_FPE_DENORMAL | |
568 | | GFC_FPE_ZERO | GFC_FPE_OVERFLOW | |
569 | | GFC_FPE_UNDERFLOW | GFC_FPE_INEXACT; | |
570 | arg += pos; | |
571 | pos = 0; | |
572 | continue; | |
573 | } | |
574 | else | |
575 | for (n = 0; exception[n] != NULL; n++) | |
576 | { | |
944b8b35 FXC |
577 | if (exception[n] && strncmp (exception[n], arg, pos) == 0) |
578 | { | |
fa86f4f9 TB |
579 | if (trap) |
580 | gfc_option.fpe |= opt_exception[n]; | |
581 | else | |
582 | gfc_option.fpe_summary |= opt_exception[n]; | |
944b8b35 FXC |
583 | arg += pos; |
584 | pos = 0; | |
585 | result = 1; | |
586 | break; | |
587 | } | |
fa86f4f9 TB |
588 | } |
589 | if (!result && !trap) | |
ddc05d11 | 590 | gfc_fatal_error ("Argument to %<-ffpe-trap%> is not valid: %s", arg); |
fa86f4f9 | 591 | else if (!result) |
ddc05d11 | 592 | gfc_fatal_error ("Argument to %<-ffpe-summary%> is not valid: %s", arg); |
fa86f4f9 | 593 | |
944b8b35 FXC |
594 | } |
595 | } | |
596 | ||
edf1eac2 | 597 | |
d3d3011f FXC |
598 | static void |
599 | gfc_handle_runtime_check_option (const char *arg) | |
600 | { | |
601 | int result, pos = 0, n; | |
602 | static const char * const optname[] = { "all", "bounds", "array-temps", | |
22bdbb0f | 603 | "recursion", "do", "pointer", |
df1afcca | 604 | "mem", "bits", NULL }; |
d3d3011f FXC |
605 | static const int optmask[] = { GFC_RTCHECK_ALL, GFC_RTCHECK_BOUNDS, |
606 | GFC_RTCHECK_ARRAY_TEMPS, | |
33abc845 | 607 | GFC_RTCHECK_RECURSION, GFC_RTCHECK_DO, |
22bdbb0f | 608 | GFC_RTCHECK_POINTER, GFC_RTCHECK_MEM, |
df1afcca | 609 | GFC_RTCHECK_BITS, 0 }; |
d3d3011f FXC |
610 | |
611 | while (*arg) | |
612 | { | |
613 | while (*arg == ',') | |
614 | arg++; | |
615 | ||
616 | while (arg[pos] && arg[pos] != ',') | |
617 | pos++; | |
618 | ||
619 | result = 0; | |
620 | for (n = 0; optname[n] != NULL; n++) | |
621 | { | |
622 | if (optname[n] && strncmp (optname[n], arg, pos) == 0) | |
623 | { | |
624 | gfc_option.rtcheck |= optmask[n]; | |
625 | arg += pos; | |
626 | pos = 0; | |
627 | result = 1; | |
628 | break; | |
629 | } | |
6ba3079d | 630 | else if (optname[n] && pos > 3 && startswith (arg, "no-") |
a4c54bf2 JD |
631 | && strncmp (optname[n], arg+3, pos-3) == 0) |
632 | { | |
633 | gfc_option.rtcheck &= ~optmask[n]; | |
634 | arg += pos; | |
635 | pos = 0; | |
636 | result = 1; | |
637 | break; | |
638 | } | |
d3d3011f FXC |
639 | } |
640 | if (!result) | |
ddc05d11 | 641 | gfc_fatal_error ("Argument to %<-fcheck%> is not valid: %s", arg); |
d3d3011f FXC |
642 | } |
643 | } | |
644 | ||
645 | ||
6de9cd9a DN |
646 | /* Handle command-line options. Returns 0 if unrecognized, 1 if |
647 | recognized and handled. */ | |
edf1eac2 | 648 | |
5f20c657 | 649 | bool |
00abf86c | 650 | gfc_handle_option (size_t scode, const char *arg, HOST_WIDE_INT value, |
a4d8c676 | 651 | int kind ATTRIBUTE_UNUSED, location_t loc ATTRIBUTE_UNUSED, |
5f20c657 | 652 | const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED) |
6de9cd9a | 653 | { |
5f20c657 | 654 | bool result = true; |
6de9cd9a DN |
655 | enum opt_code code = (enum opt_code) scode; |
656 | ||
670637ee | 657 | if (gfc_cpp_handle_option (scode, arg, value) == 1) |
5f20c657 | 658 | return true; |
670637ee | 659 | |
6de9cd9a DN |
660 | switch (code) |
661 | { | |
662 | default: | |
7c02f68b MLI |
663 | if (cl_options[code].flags & gfc_option_lang_mask ()) |
664 | break; | |
5f20c657 | 665 | result = false; |
6de9cd9a DN |
666 | break; |
667 | ||
0d52899f | 668 | case OPT_fcheck_array_temporaries: |
c3e799e1 | 669 | SET_BITFLAG (gfc_option.rtcheck, value, GFC_RTCHECK_ARRAY_TEMPS); |
0d52899f TB |
670 | break; |
671 | ||
e0bcf78c TS |
672 | case OPT_fd_lines_as_code: |
673 | gfc_option.flag_d_lines = 1; | |
674 | break; | |
675 | ||
676 | case OPT_fd_lines_as_comments: | |
677 | gfc_option.flag_d_lines = 0; | |
678 | break; | |
679 | ||
6de9cd9a DN |
680 | case OPT_ffixed_form: |
681 | gfc_option.source_form = FORM_FIXED; | |
682 | break; | |
683 | ||
684 | case OPT_ffree_form: | |
685 | gfc_option.source_form = FORM_FREE; | |
686 | break; | |
687 | ||
31198773 | 688 | case OPT_fintrinsic_modules_path: |
f34dea03 | 689 | case OPT_fintrinsic_modules_path_: |
308f961b TK |
690 | |
691 | /* This is needed because omp_lib.h is in a directory together | |
692 | with intrinsic modules. Do no warn because during testing | |
693 | without an installed compiler, we would get lots of bogus | |
694 | warnings for a missing include directory. */ | |
417ea5c0 | 695 | gfc_add_include_path (arg, false, false, false, true); |
308f961b | 696 | |
31198773 FXC |
697 | gfc_add_intrinsic_modules_path (arg); |
698 | break; | |
699 | ||
2d7c7df6 JJ |
700 | case OPT_fpreprocessed: |
701 | gfc_option.flag_preprocessed = value; | |
702 | break; | |
703 | ||
6de9cd9a DN |
704 | case OPT_fmax_identifier_length_: |
705 | if (value > GFC_MAX_SYMBOL_LEN) | |
eb6d74fa | 706 | gfc_fatal_error ("Maximum supported identifier length is %d", |
6de9cd9a DN |
707 | GFC_MAX_SYMBOL_LEN); |
708 | gfc_option.max_identifier_length = value; | |
709 | break; | |
710 | ||
51b09ce3 | 711 | case OPT_finit_local_zero: |
c3e799e1 | 712 | set_init_local_zero (value); |
51b09ce3 AL |
713 | break; |
714 | ||
715 | case OPT_finit_logical_: | |
716 | if (!strcasecmp (arg, "false")) | |
717 | gfc_option.flag_init_logical = GFC_INIT_LOGICAL_FALSE; | |
718 | else if (!strcasecmp (arg, "true")) | |
719 | gfc_option.flag_init_logical = GFC_INIT_LOGICAL_TRUE; | |
720 | else | |
ddc05d11 | 721 | gfc_fatal_error ("Unrecognized option to %<-finit-logical%>: %s", |
51b09ce3 AL |
722 | arg); |
723 | break; | |
724 | ||
51b09ce3 AL |
725 | case OPT_finit_integer_: |
726 | gfc_option.flag_init_integer = GFC_INIT_INTEGER_ON; | |
66086032 | 727 | gfc_option.flag_init_integer_value = strtol (arg, NULL, 10); |
51b09ce3 AL |
728 | break; |
729 | ||
730 | case OPT_finit_character_: | |
731 | if (value >= 0 && value <= 127) | |
732 | { | |
733 | gfc_option.flag_init_character = GFC_INIT_CHARACTER_ON; | |
734 | gfc_option.flag_init_character_value = (char)value; | |
735 | } | |
736 | else | |
ddc05d11 | 737 | gfc_fatal_error ("The value of n in %<-finit-character=n%> must be " |
51b09ce3 AL |
738 | "between 0 and 127"); |
739 | break; | |
740 | ||
6de9cd9a | 741 | case OPT_I: |
417ea5c0 | 742 | gfc_add_include_path (arg, true, false, true, true); |
6de9cd9a DN |
743 | break; |
744 | ||
745 | case OPT_J: | |
6de9cd9a | 746 | gfc_handle_module_path_options (arg); |
2d0b4bcd | 747 | break; |
ccc2ed87 | 748 | |
944b8b35 | 749 | case OPT_ffpe_trap_: |
fa86f4f9 TB |
750 | gfc_handle_fpe_option (arg, true); |
751 | break; | |
752 | ||
753 | case OPT_ffpe_summary_: | |
754 | gfc_handle_fpe_option (arg, false); | |
944b8b35 FXC |
755 | break; |
756 | ||
6de9cd9a | 757 | case OPT_std_f95: |
67e9518e | 758 | gfc_option.allow_std = GFC_STD_OPT_F95; |
6de9cd9a | 759 | gfc_option.warn_std = GFC_STD_F95_OBS; |
dfbfb630 JD |
760 | gfc_option.max_continue_fixed = 19; |
761 | gfc_option.max_continue_free = 39; | |
6de9cd9a | 762 | gfc_option.max_identifier_length = 31; |
73e42eef | 763 | warn_ampersand = 1; |
16db2a6a | 764 | warn_tabs = 1; |
6de9cd9a DN |
765 | break; |
766 | ||
767 | case OPT_std_f2003: | |
67e9518e | 768 | gfc_option.allow_std = GFC_STD_OPT_F03; |
b7892582 | 769 | gfc_option.warn_std = GFC_STD_F95_OBS; |
6de9cd9a | 770 | gfc_option.max_identifier_length = 63; |
73e42eef | 771 | warn_ampersand = 1; |
16db2a6a | 772 | warn_tabs = 1; |
6de9cd9a DN |
773 | break; |
774 | ||
f489fba1 | 775 | case OPT_std_f2008: |
67e9518e | 776 | gfc_option.allow_std = GFC_STD_OPT_F08; |
58fc89f6 | 777 | gfc_option.warn_std = GFC_STD_F95_OBS | GFC_STD_F2008_OBS; |
f489fba1 | 778 | gfc_option.max_identifier_length = 63; |
73e42eef | 779 | warn_ampersand = 1; |
16db2a6a | 780 | warn_tabs = 1; |
f489fba1 FXC |
781 | break; |
782 | ||
4650947d | 783 | case OPT_std_f2008ts: |
8179b067 | 784 | case OPT_std_f2018: |
67e9518e | 785 | gfc_option.allow_std = GFC_STD_OPT_F18; |
8179b067 JB |
786 | gfc_option.warn_std = GFC_STD_F95_OBS | GFC_STD_F2008_OBS |
787 | | GFC_STD_F2018_OBS; | |
788 | gfc_option.max_identifier_length = 63; | |
789 | warn_ampersand = 1; | |
790 | warn_tabs = 1; | |
791 | break; | |
792 | ||
6de9cd9a | 793 | case OPT_std_gnu: |
a47eec17 | 794 | set_default_std_flags (); |
c0309c74 RS |
795 | break; |
796 | ||
797 | case OPT_std_legacy: | |
a47eec17 | 798 | set_default_std_flags (); |
c0309c74 | 799 | gfc_option.warn_std = 0; |
b7892582 JB |
800 | break; |
801 | ||
25d8f0a2 | 802 | case OPT_fshort_enums: |
5498f011 | 803 | /* Handled in language-independent code. */ |
25d8f0a2 | 804 | break; |
eaa90d25 | 805 | |
d3d3011f FXC |
806 | case OPT_fcheck_: |
807 | gfc_handle_runtime_check_option (arg); | |
808 | break; | |
f6288c24 FR |
809 | |
810 | case OPT_fdec: | |
c3e799e1 FR |
811 | /* Set (or unset) the DEC extension flags. */ |
812 | set_dec_flags (value); | |
f6288c24 | 813 | break; |
6de9cd9a DN |
814 | } |
815 | ||
f2bc201f MLI |
816 | Fortran_handle_option_auto (&global_options, &global_options_set, |
817 | scode, arg, value, | |
818 | gfc_option_lang_mask (), kind, | |
819 | loc, handlers, global_dc); | |
6de9cd9a DN |
820 | return result; |
821 | } | |
41804a5b TB |
822 | |
823 | ||
824 | /* Return a string with the options passed to the compiler; used for | |
825 | Fortran's compiler_options() intrinsic. */ | |
826 | ||
827 | char * | |
828 | gfc_get_option_string (void) | |
829 | { | |
830 | unsigned j; | |
831 | size_t len, pos; | |
832 | char *result; | |
833 | ||
58b2a358 TB |
834 | /* Allocate and return a one-character string with '\0'. */ |
835 | if (!save_decoded_options_count) | |
836 | return XCNEWVEC (char, 1); | |
837 | ||
41804a5b TB |
838 | /* Determine required string length. */ |
839 | ||
840 | len = 0; | |
841 | for (j = 1; j < save_decoded_options_count; j++) | |
842 | { | |
843 | switch (save_decoded_options[j].opt_index) | |
844 | { | |
845 | case OPT_o: | |
846 | case OPT_d: | |
847 | case OPT_dumpbase: | |
1dedc12d | 848 | case OPT_dumpbase_ext: |
41804a5b | 849 | case OPT_dumpdir: |
41804a5b TB |
850 | case OPT_quiet: |
851 | case OPT_version: | |
852 | case OPT_fintrinsic_modules_path: | |
f34dea03 | 853 | case OPT_fintrinsic_modules_path_: |
41804a5b TB |
854 | /* Ignore these. */ |
855 | break; | |
856 | default: | |
1cc0e193 | 857 | /* Ignore file names. */ |
41804a5b TB |
858 | if (save_decoded_options[j].orig_option_with_args_text[0] == '-') |
859 | len += 1 | |
860 | + strlen (save_decoded_options[j].orig_option_with_args_text); | |
861 | } | |
862 | } | |
863 | ||
93acb62c | 864 | result = XCNEWVEC (char, len); |
41804a5b TB |
865 | |
866 | pos = 0; | |
867 | for (j = 1; j < save_decoded_options_count; j++) | |
868 | { | |
869 | switch (save_decoded_options[j].opt_index) | |
870 | { | |
871 | case OPT_o: | |
872 | case OPT_d: | |
873 | case OPT_dumpbase: | |
1dedc12d | 874 | case OPT_dumpbase_ext: |
41804a5b | 875 | case OPT_dumpdir: |
41804a5b TB |
876 | case OPT_quiet: |
877 | case OPT_version: | |
878 | case OPT_fintrinsic_modules_path: | |
f34dea03 | 879 | case OPT_fintrinsic_modules_path_: |
41804a5b TB |
880 | /* Ignore these. */ |
881 | continue; | |
882 | ||
883 | case OPT_cpp_: | |
884 | /* Use "-cpp" rather than "-cpp=<temporary file>". */ | |
885 | len = 4; | |
886 | break; | |
887 | ||
888 | default: | |
1cc0e193 | 889 | /* Ignore file names. */ |
41804a5b TB |
890 | if (save_decoded_options[j].orig_option_with_args_text[0] != '-') |
891 | continue; | |
892 | ||
893 | len = strlen (save_decoded_options[j].orig_option_with_args_text); | |
894 | } | |
895 | ||
896 | memcpy (&result[pos], save_decoded_options[j].orig_option_with_args_text, len); | |
897 | pos += len; | |
898 | result[pos++] = ' '; | |
899 | } | |
900 | ||
901 | result[--pos] = '\0'; | |
902 | return result; | |
903 | } | |
c3e799e1 FR |
904 | |
905 | #undef SET_BITFLAG | |
906 | #undef SET_BITFLAG2 | |
907 | #undef SET_FLAG |