1 /* Parse and display command line options.
2 Copyright (C) 2000-2023 Free Software Foundation, Inc.
3 Contributed by Andy Vaught
5 This file is part of GCC.
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
9 Software Foundation; either version 3, or (at your option) any later
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
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
23 #include "coretypes.h"
27 #include "diagnostic.h" /* For global_dc. */
29 #include "toplev.h" /* For save_decoded_options. */
31 #include "langhooks.h"
33 gfc_option_t gfc_option
;
35 #define SET_FLAG(flag, condition, on_value, off_value) \
44 #define SET_BITFLAG2(m) m
46 #define SET_BITFLAG(flag, condition, value) \
47 SET_BITFLAG2 (SET_FLAG (flag, condition, (flag | (value)), (flag & ~(value))))
50 /* Set flags that control warnings and errors for different
51 Fortran standards to their default values. Keep in sync with
52 libgfortran/runtime/compile_options.c (init_compile_options). */
55 set_default_std_flags (void)
57 gfc_option
.allow_std
= GFC_STD_F95_OBS
| GFC_STD_F95_DEL
58 | GFC_STD_F2003
| GFC_STD_F2008
| GFC_STD_F95
| GFC_STD_F77
59 | GFC_STD_F2008_OBS
| GFC_STD_GNU
| GFC_STD_LEGACY
60 | GFC_STD_F2018
| GFC_STD_F2018_DEL
| GFC_STD_F2018_OBS
;
61 gfc_option
.warn_std
= GFC_STD_F2018_DEL
| GFC_STD_F95_DEL
| GFC_STD_LEGACY
;
64 /* Set (or unset) the DEC extension flags. */
67 set_dec_flags (int value
)
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 SET_BITFLAG (flag_dec_format_defaults
, value
, value
);
78 SET_BITFLAG (flag_dec_blank_format_item
, value
, value
);
79 SET_BITFLAG (flag_dec_char_conversions
, value
, value
);
82 /* Finalize DEC flags. */
85 post_dec_flags (int value
)
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. */
94 gfc_option
.allow_std
|= GFC_STD_F95_OBS
| GFC_STD_F95_DEL
95 | GFC_STD_GNU
| GFC_STD_LEGACY
;
96 gfc_option
.warn_std
&= ~(GFC_STD_LEGACY
| GFC_STD_F95_DEL
);
100 /* Enable (or disable) -finit-local-zero. */
103 set_init_local_zero (int value
)
105 gfc_option
.flag_init_integer_value
= 0;
106 gfc_option
.flag_init_character_value
= (char)0;
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
);
117 /* Return language mask for Fortran options. */
120 gfc_option_lang_mask (void)
125 /* Initialize options structure OPTS. */
128 gfc_init_options_struct (struct gcc_options
*opts
)
130 opts
->x_flag_errno_math
= 0;
131 opts
->frontend_set_flag_errno_math
= true;
132 opts
->x_flag_associative_math
= -1;
133 opts
->frontend_set_flag_associative_math
= true;
136 /* Get ready for options handling. Keep in sync with
137 libgfortran/runtime/compile_options.c (init_compile_options). */
140 gfc_init_options (unsigned int decoded_options_count
,
141 struct cl_decoded_option
*decoded_options
)
143 gfc_source_file
= NULL
;
144 gfc_option
.module_dir
= NULL
;
145 gfc_option
.source_form
= FORM_UNKNOWN
;
146 gfc_option
.max_continue_fixed
= 255;
147 gfc_option
.max_continue_free
= 255;
148 gfc_option
.max_identifier_length
= GFC_MAX_SYMBOL_LEN
;
149 gfc_option
.max_errors
= 25;
151 gfc_option
.flag_preprocessed
= 0;
152 gfc_option
.flag_d_lines
= -1;
153 set_init_local_zero (0);
156 /* All except GFC_FPE_INEXACT. */
157 gfc_option
.fpe_summary
= GFC_FPE_INVALID
| GFC_FPE_DENORMAL
158 | GFC_FPE_ZERO
| GFC_FPE_OVERFLOW
160 gfc_option
.rtcheck
= 0;
163 set_default_std_flags ();
165 /* Initialize cpp-related options. */
166 gfc_cpp_init_options (decoded_options_count
, decoded_options
);
167 gfc_diagnostics_init ();
171 /* Determine the source form from the filename extension. We assume
172 case insensitivity. */
174 static gfc_source_form
175 form_from_filename (const char *filename
)
179 const char *extension
;
180 gfc_source_form form
;
207 }; /* sentinel value */
209 gfc_source_form f_form
;
213 /* Find end of file name. Note, filename is either a NULL pointer or
214 a NUL terminated string. */
216 while (filename
[i
] != '\0')
219 /* Find last period. */
220 while (i
>= 0 && (filename
[i
] != '.'))
223 /* Did we see a file extension? */
225 return FORM_UNKNOWN
; /* Nope */
227 /* Get file extension and compare it to others. */
228 fileext
= &(filename
[i
]);
231 f_form
= FORM_UNKNOWN
;
235 if (strcasecmp (fileext
, exttype
[i
].extension
) == 0)
237 f_form
= exttype
[i
].form
;
241 while (exttype
[i
].form
!= FORM_UNKNOWN
);
247 /* Finalize commandline options. */
250 gfc_post_options (const char **pfilename
)
252 const char *filename
= *pfilename
, *canon_source_file
= NULL
;
254 bool verbose_missing_dir_warn
;
257 /* This needs to be after the commandline has been processed.
258 In Fortran, the options is by default enabled, in C/C++
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
263 = (OPTION_SET_P (cpp_warn_missing_include_dirs
)
264 && global_options
.x_cpp_warn_missing_include_dirs
);
265 SET_OPTION_IF_UNSET (&global_options
, &global_options_set
,
266 cpp_warn_missing_include_dirs
, 1);
267 gfc_check_include_dirs (verbose_missing_dir_warn
);
269 /* Finalize DEC flags. */
270 post_dec_flags (flag_dec
);
272 /* Excess precision other than "fast" requires front-end
274 if (flag_excess_precision
== EXCESS_PRECISION_STANDARD
)
275 sorry ("%<-fexcess-precision=standard%> for Fortran");
276 else if (flag_excess_precision
== EXCESS_PRECISION_FLOAT16
)
277 sorry ("%<-fexcess-precision=16%> for Fortran");
279 flag_excess_precision
= EXCESS_PRECISION_FAST
;
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
);
286 if (flag_protect_parens
== -1)
287 flag_protect_parens
= !optimize_fast
;
289 /* -Ofast sets implies -fstack-arrays unless an explicit size is set for
291 if (flag_stack_arrays
== -1 && flag_max_stack_var_size
== -2)
292 flag_stack_arrays
= optimize_fast
;
294 /* By default, disable (re)allocation during assignment for -std=f95,
295 and enable it for F2003/F2008/GNU/Legacy. */
296 if (flag_realloc_lhs
== -1)
298 if (gfc_option
.allow_std
& GFC_STD_F2003
)
299 flag_realloc_lhs
= 1;
301 flag_realloc_lhs
= 0;
304 /* -fbounds-check is equivalent to -fcheck=bounds */
305 if (flag_bounds_check
)
306 gfc_option
.rtcheck
|= GFC_RTCHECK_BOUNDS
;
308 if (flag_compare_debug
)
309 flag_dump_fortran_original
= 0;
311 /* Make -fmax-errors visible to gfortran's diagnostic machinery. */
312 if (OPTION_SET_P (flag_max_errors
))
313 gfc_option
.max_errors
= flag_max_errors
;
315 /* Verify the input file name. */
316 if (!filename
|| strcmp (filename
, "-") == 0)
321 if (gfc_option
.flag_preprocessed
)
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
;
329 *pfilename
= gfc_source_file
;
332 gfc_source_file
= filename
;
334 if (canon_source_file
== NULL
)
335 canon_source_file
= gfc_source_file
;
337 /* Adds the path where the source file is to the list of include files. */
339 i
= strlen (canon_source_file
);
340 while (i
> 0 && !IS_DIR_SEPARATOR (canon_source_file
[i
]))
345 source_path
= (char *) alloca (i
+ 1);
346 memcpy (source_path
, canon_source_file
, i
);
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);
354 gfc_add_include_path (".", true, true, false, false);
356 if (canon_source_file
!= gfc_source_file
)
357 free (CONST_CAST (char *, canon_source_file
));
359 /* Decide which form the file will be read in as. */
361 if (gfc_option
.source_form
!= FORM_UNKNOWN
)
362 gfc_current_form
= gfc_option
.source_form
;
365 gfc_current_form
= form_from_filename (filename
);
367 if (gfc_current_form
== FORM_UNKNOWN
)
369 gfc_current_form
= FORM_FREE
;
370 main_input_filename
= filename
;
371 gfc_warning_now (0, "Reading file %qs as free form",
372 (filename
[0] == '\0') ? "<stdin>" : filename
);
376 /* If the user specified -fd-lines-as-{code|comments} verify that we're
378 if (gfc_current_form
== FORM_FREE
)
380 if (gfc_option
.flag_d_lines
== 0)
381 gfc_warning_now (0, "%<-fd-lines-as-comments%> has no effect "
383 else if (gfc_option
.flag_d_lines
== 1)
384 gfc_warning_now (0, "%<-fd-lines-as-code%> has no effect in free form");
386 if (warn_line_truncation
== -1)
387 warn_line_truncation
= 1;
389 /* Enable -Werror=line-truncation when -Werror and -Wno-error have
391 if (warn_line_truncation
&& !OPTION_SET_P (warnings_are_errors
)
392 && (global_dc
->classify_diagnostic
[OPT_Wline_truncation
] ==
394 diagnostic_classify_diagnostic (global_dc
, OPT_Wline_truncation
,
395 DK_ERROR
, UNKNOWN_LOCATION
);
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;
403 if (warn_line_truncation
== -1)
404 warn_line_truncation
= 0;
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
;
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
;
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
417 if (flag_second_underscore
== -1)
418 flag_second_underscore
= flag_f2c
;
420 if (!flag_automatic
&& flag_max_stack_var_size
!= -2
421 && flag_max_stack_var_size
!= 0)
422 gfc_warning_now (0, "Flag %<-fno-automatic%> overwrites %<-fmax-stack-var-size=%d%>",
423 flag_max_stack_var_size
);
424 else if (!flag_automatic
&& flag_recursive
)
425 gfc_warning_now (OPT_Woverwrite_recursive
, "Flag %<-fno-automatic%> "
426 "overwrites %<-frecursive%>");
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");
430 else if (flag_max_stack_var_size
!= -2 && flag_recursive
)
431 gfc_warning_now (0, "Flag %<-frecursive%> overwrites %<-fmax-stack-var-size=%d%>",
432 flag_max_stack_var_size
);
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");
438 /* Implement -frecursive as -fmax-stack-var-size=-1. */
440 flag_max_stack_var_size
= -1;
442 /* Implied -frecursive; implemented as -fmax-stack-var-size=-1. */
443 if (flag_max_stack_var_size
== -2 && flag_automatic
444 && (flag_openmp
|| flag_openacc
))
447 flag_max_stack_var_size
= -1;
450 /* Set flag_stack_arrays correctly. */
451 if (flag_stack_arrays
== -1)
452 flag_stack_arrays
= 0;
455 if (flag_max_stack_var_size
== -2)
456 flag_max_stack_var_size
= 65536;
458 /* Implement -fno-automatic as -fmax-stack-var-size=0. */
460 flag_max_stack_var_size
= 0;
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. */
465 if (flag_inline_matmul_limit
< 0)
467 if (flag_external_blas
)
468 flag_inline_matmul_limit
= flag_blas_matmul_limit
;
470 flag_inline_matmul_limit
= 30;
473 /* Optimization implies front end optimization, unless the user
474 specified it directly. */
476 if (flag_frontend_optimize
== -1)
477 flag_frontend_optimize
= optimize
&& !optimize_debug
;
479 /* Same for front end loop interchange. */
481 if (flag_frontend_loop_interchange
== -1)
482 flag_frontend_loop_interchange
= optimize
;
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
;
489 if (flag_max_array_constructor
< 65535)
490 flag_max_array_constructor
= 65535;
492 if (flag_fixed_line_length
!= 0 && flag_fixed_line_length
< 7)
493 gfc_fatal_error ("Fixed line length must be at least seven");
495 if (flag_free_line_length
!= 0 && flag_free_line_length
< 4)
496 gfc_fatal_error ("Free line length must be at least three");
498 if (flag_max_subrecord_length
> MAX_SUBRECORD_LENGTH
)
499 gfc_fatal_error ("Maximum subrecord length cannot exceed %d",
500 MAX_SUBRECORD_LENGTH
);
502 gfc_cpp_post_options (verbose_missing_dir_warn
);
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";
509 return gfc_cpp_preprocess_only ();
514 gfc_handle_module_path_options (const char *arg
)
517 if (gfc_option
.module_dir
!= NULL
)
518 gfc_fatal_error ("gfortran: Only one %<-J%> option allowed");
520 gfc_option
.module_dir
= XCNEWVEC (char, strlen (arg
) + 2);
521 strcpy (gfc_option
.module_dir
, arg
);
523 gfc_add_include_path (gfc_option
.module_dir
, true, false, true, true);
525 strcat (gfc_option
.module_dir
, "/");
529 /* Handle options -ffpe-trap= and -ffpe-summary=. */
532 gfc_handle_fpe_option (const char *arg
, bool trap
)
534 int result
, pos
= 0, n
;
535 /* precision is a backwards compatibility alias for inexact. */
536 static const char * const exception
[] = { "invalid", "denormal", "zero",
537 "overflow", "underflow",
538 "inexact", "precision", NULL
};
539 static const int opt_exception
[] = { GFC_FPE_INVALID
, GFC_FPE_DENORMAL
,
540 GFC_FPE_ZERO
, GFC_FPE_OVERFLOW
,
541 GFC_FPE_UNDERFLOW
, GFC_FPE_INEXACT
,
545 /* As the default for -ffpe-summary= is nonzero, set it to 0. */
547 gfc_option
.fpe_summary
= 0;
554 while (arg
[pos
] && arg
[pos
] != ',')
558 if (!trap
&& strncmp ("none", arg
, pos
) == 0)
560 gfc_option
.fpe_summary
= 0;
565 else if (!trap
&& strncmp ("all", arg
, pos
) == 0)
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
;
575 for (n
= 0; exception
[n
] != NULL
; n
++)
577 if (exception
[n
] && strncmp (exception
[n
], arg
, pos
) == 0)
580 gfc_option
.fpe
|= opt_exception
[n
];
582 gfc_option
.fpe_summary
|= opt_exception
[n
];
589 if (!result
&& !trap
)
590 gfc_fatal_error ("Argument to %<-ffpe-trap%> is not valid: %s", arg
);
592 gfc_fatal_error ("Argument to %<-ffpe-summary%> is not valid: %s", arg
);
599 gfc_handle_runtime_check_option (const char *arg
)
601 int result
, pos
= 0, n
;
602 static const char * const optname
[] = { "all", "bounds", "array-temps",
603 "recursion", "do", "pointer",
604 "mem", "bits", NULL
};
605 static const int optmask
[] = { GFC_RTCHECK_ALL
, GFC_RTCHECK_BOUNDS
,
606 GFC_RTCHECK_ARRAY_TEMPS
,
607 GFC_RTCHECK_RECURSION
, GFC_RTCHECK_DO
,
608 GFC_RTCHECK_POINTER
, GFC_RTCHECK_MEM
,
609 GFC_RTCHECK_BITS
, 0 };
616 while (arg
[pos
] && arg
[pos
] != ',')
620 for (n
= 0; optname
[n
] != NULL
; n
++)
622 if (optname
[n
] && strncmp (optname
[n
], arg
, pos
) == 0)
624 gfc_option
.rtcheck
|= optmask
[n
];
630 else if (optname
[n
] && pos
> 3 && startswith (arg
, "no-")
631 && strncmp (optname
[n
], arg
+3, pos
-3) == 0)
633 gfc_option
.rtcheck
&= ~optmask
[n
];
641 gfc_fatal_error ("Argument to %<-fcheck%> is not valid: %s", arg
);
646 /* Handle command-line options. Returns 0 if unrecognized, 1 if
647 recognized and handled. */
650 gfc_handle_option (size_t scode
, const char *arg
, HOST_WIDE_INT value
,
651 int kind ATTRIBUTE_UNUSED
, location_t loc ATTRIBUTE_UNUSED
,
652 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
)
655 enum opt_code code
= (enum opt_code
) scode
;
657 if (gfc_cpp_handle_option (scode
, arg
, value
) == 1)
663 if (cl_options
[code
].flags
& gfc_option_lang_mask ())
668 case OPT_fcheck_array_temporaries
:
669 SET_BITFLAG (gfc_option
.rtcheck
, value
, GFC_RTCHECK_ARRAY_TEMPS
);
672 case OPT_fd_lines_as_code
:
673 gfc_option
.flag_d_lines
= 1;
676 case OPT_fd_lines_as_comments
:
677 gfc_option
.flag_d_lines
= 0;
680 case OPT_ffixed_form
:
681 gfc_option
.source_form
= FORM_FIXED
;
685 gfc_option
.source_form
= FORM_FREE
;
688 case OPT_fintrinsic_modules_path
:
689 case OPT_fintrinsic_modules_path_
:
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. */
695 gfc_add_include_path (arg
, false, false, false, true);
697 gfc_add_intrinsic_modules_path (arg
);
700 case OPT_fpreprocessed
:
701 gfc_option
.flag_preprocessed
= value
;
704 case OPT_fmax_identifier_length_
:
705 if (value
> GFC_MAX_SYMBOL_LEN
)
706 gfc_fatal_error ("Maximum supported identifier length is %d",
708 gfc_option
.max_identifier_length
= value
;
711 case OPT_finit_local_zero
:
712 set_init_local_zero (value
);
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
;
721 gfc_fatal_error ("Unrecognized option to %<-finit-logical%>: %s",
725 case OPT_finit_integer_
:
726 gfc_option
.flag_init_integer
= GFC_INIT_INTEGER_ON
;
727 gfc_option
.flag_init_integer_value
= strtol (arg
, NULL
, 10);
730 case OPT_finit_character_
:
731 if (value
>= 0 && value
<= 127)
733 gfc_option
.flag_init_character
= GFC_INIT_CHARACTER_ON
;
734 gfc_option
.flag_init_character_value
= (char)value
;
737 gfc_fatal_error ("The value of n in %<-finit-character=n%> must be "
738 "between 0 and 127");
742 gfc_add_include_path (arg
, true, false, true, true);
746 gfc_handle_module_path_options (arg
);
750 gfc_handle_fpe_option (arg
, true);
753 case OPT_ffpe_summary_
:
754 gfc_handle_fpe_option (arg
, false);
758 gfc_option
.allow_std
= GFC_STD_OPT_F95
;
759 gfc_option
.warn_std
= GFC_STD_F95_OBS
;
760 gfc_option
.max_continue_fixed
= 19;
761 gfc_option
.max_continue_free
= 39;
762 gfc_option
.max_identifier_length
= 31;
768 gfc_option
.allow_std
= GFC_STD_OPT_F03
;
769 gfc_option
.warn_std
= GFC_STD_F95_OBS
;
770 gfc_option
.max_identifier_length
= 63;
776 gfc_option
.allow_std
= GFC_STD_OPT_F08
;
777 gfc_option
.warn_std
= GFC_STD_F95_OBS
| GFC_STD_F2008_OBS
;
778 gfc_option
.max_identifier_length
= 63;
783 case OPT_std_f2008ts
:
785 gfc_option
.allow_std
= GFC_STD_OPT_F18
;
786 gfc_option
.warn_std
= GFC_STD_F95_OBS
| GFC_STD_F2008_OBS
788 gfc_option
.max_identifier_length
= 63;
794 set_default_std_flags ();
798 set_default_std_flags ();
799 gfc_option
.warn_std
= 0;
802 case OPT_fshort_enums
:
803 /* Handled in language-independent code. */
807 gfc_handle_runtime_check_option (arg
);
811 /* Set (or unset) the DEC extension flags. */
812 set_dec_flags (value
);
816 Fortran_handle_option_auto (&global_options
, &global_options_set
,
818 gfc_option_lang_mask (), kind
,
819 loc
, handlers
, global_dc
);
824 /* Return a string with the options passed to the compiler; used for
825 Fortran's compiler_options() intrinsic. */
828 gfc_get_option_string (void)
834 /* Allocate and return a one-character string with '\0'. */
835 if (!save_decoded_options_count
)
836 return XCNEWVEC (char, 1);
838 /* Determine required string length. */
841 for (j
= 1; j
< save_decoded_options_count
; j
++)
843 switch (save_decoded_options
[j
].opt_index
)
848 case OPT_dumpbase_ext
:
852 case OPT_fintrinsic_modules_path
:
853 case OPT_fintrinsic_modules_path_
:
857 /* Ignore file names. */
858 if (save_decoded_options
[j
].orig_option_with_args_text
[0] == '-')
860 + strlen (save_decoded_options
[j
].orig_option_with_args_text
);
864 result
= XCNEWVEC (char, len
);
867 for (j
= 1; j
< save_decoded_options_count
; j
++)
869 switch (save_decoded_options
[j
].opt_index
)
874 case OPT_dumpbase_ext
:
878 case OPT_fintrinsic_modules_path
:
879 case OPT_fintrinsic_modules_path_
:
884 /* Use "-cpp" rather than "-cpp=<temporary file>". */
889 /* Ignore file names. */
890 if (save_decoded_options
[j
].orig_option_with_args_text
[0] != '-')
893 len
= strlen (save_decoded_options
[j
].orig_option_with_args_text
);
896 memcpy (&result
[pos
], save_decoded_options
[j
].orig_option_with_args_text
, len
);
901 result
[--pos
] = '\0';