1 /* Parse and display command line options.
2 Copyright (C) 2000-2024 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
| GFC_STD_F2023
62 gfc_option
.warn_std
= GFC_STD_F2018_DEL
| GFC_STD_F95_DEL
| GFC_STD_LEGACY
66 /* Set (or unset) the DEC extension flags. */
69 set_dec_flags (int value
)
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
);
79 SET_BITFLAG (flag_dec_format_defaults
, value
, value
);
80 SET_BITFLAG (flag_dec_blank_format_item
, value
, value
);
81 SET_BITFLAG (flag_dec_char_conversions
, value
, value
);
84 /* Finalize DEC flags. */
87 post_dec_flags (int value
)
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. */
96 gfc_option
.allow_std
|= GFC_STD_F95_OBS
| GFC_STD_F95_DEL
97 | GFC_STD_GNU
| GFC_STD_LEGACY
;
98 gfc_option
.warn_std
&= ~(GFC_STD_LEGACY
| GFC_STD_F95_DEL
);
102 /* Enable (or disable) -finit-local-zero. */
105 set_init_local_zero (int value
)
107 gfc_option
.flag_init_integer_value
= 0;
108 gfc_option
.flag_init_character_value
= (char)0;
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
);
119 /* Return language mask for Fortran options. */
122 gfc_option_lang_mask (void)
127 /* Initialize options structure OPTS. */
130 gfc_init_options_struct (struct gcc_options
*opts
)
132 opts
->x_flag_errno_math
= 0;
133 opts
->frontend_set_flag_errno_math
= true;
134 opts
->x_flag_associative_math
= -1;
135 opts
->frontend_set_flag_associative_math
= true;
138 /* Get ready for options handling. Keep in sync with
139 libgfortran/runtime/compile_options.c (init_compile_options). */
142 gfc_init_options (unsigned int decoded_options_count
,
143 struct cl_decoded_option
*decoded_options
)
145 gfc_source_file
= NULL
;
146 gfc_option
.module_dir
= NULL
;
147 gfc_option
.source_form
= FORM_UNKNOWN
;
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;
153 gfc_option
.max_identifier_length
= GFC_MAX_SYMBOL_LEN
;
154 gfc_option
.max_errors
= 25;
156 gfc_option
.flag_preprocessed
= 0;
157 gfc_option
.flag_d_lines
= -1;
158 set_init_local_zero (0);
161 /* All except GFC_FPE_INEXACT. */
162 gfc_option
.fpe_summary
= GFC_FPE_INVALID
| GFC_FPE_DENORMAL
163 | GFC_FPE_ZERO
| GFC_FPE_OVERFLOW
165 gfc_option
.rtcheck
= 0;
168 set_default_std_flags ();
170 /* Initialize cpp-related options. */
171 gfc_cpp_init_options (decoded_options_count
, decoded_options
);
172 gfc_diagnostics_init ();
176 /* Determine the source form from the filename extension. We assume
177 case insensitivity. */
179 static gfc_source_form
180 form_from_filename (const char *filename
)
184 const char *extension
;
185 gfc_source_form form
;
218 }; /* sentinel value */
220 gfc_source_form f_form
;
224 /* Find end of file name. Note, filename is either a NULL pointer or
225 a NUL terminated string. */
227 while (filename
[i
] != '\0')
230 /* Find last period. */
231 while (i
>= 0 && (filename
[i
] != '.'))
234 /* Did we see a file extension? */
236 return FORM_UNKNOWN
; /* Nope */
238 /* Get file extension and compare it to others. */
239 fileext
= &(filename
[i
]);
242 f_form
= FORM_UNKNOWN
;
246 if (strcasecmp (fileext
, exttype
[i
].extension
) == 0)
248 f_form
= exttype
[i
].form
;
252 while (exttype
[i
].form
!= FORM_UNKNOWN
);
258 /* Finalize commandline options. */
261 gfc_post_options (const char **pfilename
)
263 const char *filename
= *pfilename
, *canon_source_file
= NULL
;
265 bool verbose_missing_dir_warn
;
268 /* This needs to be after the commandline has been processed.
269 In Fortran, the options is by default enabled, in C/C++
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
274 = (OPTION_SET_P (cpp_warn_missing_include_dirs
)
275 && global_options
.x_cpp_warn_missing_include_dirs
);
276 SET_OPTION_IF_UNSET (&global_options
, &global_options_set
,
277 cpp_warn_missing_include_dirs
, 1);
278 gfc_check_include_dirs (verbose_missing_dir_warn
);
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);
284 /* Finalize DEC flags. */
285 post_dec_flags (flag_dec
);
287 /* Excess precision other than "fast" requires front-end
289 if (flag_excess_precision
== EXCESS_PRECISION_STANDARD
)
290 sorry ("%<-fexcess-precision=standard%> for Fortran");
291 else if (flag_excess_precision
== EXCESS_PRECISION_FLOAT16
)
292 sorry ("%<-fexcess-precision=16%> for Fortran");
294 flag_excess_precision
= EXCESS_PRECISION_FAST
;
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
);
301 if (flag_protect_parens
== -1)
302 flag_protect_parens
= !optimize_fast
;
304 /* -Ofast sets implies -fstack-arrays unless an explicit size is set for
306 if (flag_stack_arrays
== -1 && flag_max_stack_var_size
== -2)
307 flag_stack_arrays
= optimize_fast
;
309 /* By default, disable (re)allocation during assignment for -std=f95,
310 and enable it for F2003/F2008/GNU/Legacy. */
311 if (flag_realloc_lhs
== -1)
313 if (gfc_option
.allow_std
& GFC_STD_F2003
)
314 flag_realloc_lhs
= 1;
316 flag_realloc_lhs
= 0;
319 /* -fbounds-check is equivalent to -fcheck=bounds */
320 if (flag_bounds_check
)
321 gfc_option
.rtcheck
|= GFC_RTCHECK_BOUNDS
;
323 if (flag_compare_debug
)
324 flag_dump_fortran_original
= 0;
326 /* Make -fmax-errors visible to gfortran's diagnostic machinery. */
327 if (OPTION_SET_P (flag_max_errors
))
328 gfc_option
.max_errors
= flag_max_errors
;
330 /* Verify the input file name. */
331 if (!filename
|| strcmp (filename
, "-") == 0)
336 if (gfc_option
.flag_preprocessed
)
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
;
344 *pfilename
= gfc_source_file
;
347 gfc_source_file
= filename
;
349 if (canon_source_file
== NULL
)
350 canon_source_file
= gfc_source_file
;
352 /* Adds the path where the source file is to the list of include files. */
354 i
= strlen (canon_source_file
);
355 while (i
> 0 && !IS_DIR_SEPARATOR (canon_source_file
[i
]))
360 source_path
= (char *) alloca (i
+ 1);
361 memcpy (source_path
, canon_source_file
, i
);
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);
369 gfc_add_include_path (".", true, true, false, false);
371 if (canon_source_file
!= gfc_source_file
)
372 free (CONST_CAST (char *, canon_source_file
));
374 /* Decide which form the file will be read in as. */
376 if (gfc_option
.source_form
!= FORM_UNKNOWN
)
377 gfc_current_form
= gfc_option
.source_form
;
380 gfc_current_form
= form_from_filename (filename
);
382 if (gfc_current_form
== FORM_UNKNOWN
)
384 gfc_current_form
= FORM_FREE
;
385 main_input_filename
= filename
;
386 gfc_warning_now (0, "Reading file %qs as free form",
387 (filename
[0] == '\0') ? "<stdin>" : filename
);
391 /* If the user specified -fd-lines-as-{code|comments} verify that we're
393 if (gfc_current_form
== FORM_FREE
)
395 if (gfc_option
.flag_d_lines
== 0)
396 gfc_warning_now (0, "%<-fd-lines-as-comments%> has no effect "
398 else if (gfc_option
.flag_d_lines
== 1)
399 gfc_warning_now (0, "%<-fd-lines-as-code%> has no effect in free form");
401 if (warn_line_truncation
== -1)
402 warn_line_truncation
= 1;
404 /* Enable -Werror=line-truncation when -Werror and -Wno-error have
406 if (warn_line_truncation
&& !OPTION_SET_P (warnings_are_errors
)
407 && option_unspecified_p (OPT_Wline_truncation
))
408 diagnostic_classify_diagnostic (global_dc
, OPT_Wline_truncation
,
409 DK_ERROR
, UNKNOWN_LOCATION
);
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;
417 if (warn_line_truncation
== -1)
418 warn_line_truncation
= 0;
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
;
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
;
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
431 if (flag_second_underscore
== -1)
432 flag_second_underscore
= flag_f2c
;
434 if (!flag_automatic
&& flag_max_stack_var_size
!= -2
435 && flag_max_stack_var_size
!= 0)
436 gfc_warning_now (0, "Flag %<-fno-automatic%> overwrites %<-fmax-stack-var-size=%d%>",
437 flag_max_stack_var_size
);
438 else if (!flag_automatic
&& flag_recursive
)
439 gfc_warning_now (OPT_Woverwrite_recursive
, "Flag %<-fno-automatic%> "
440 "overwrites %<-frecursive%>");
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");
444 else if (flag_max_stack_var_size
!= -2 && flag_recursive
)
445 gfc_warning_now (0, "Flag %<-frecursive%> overwrites %<-fmax-stack-var-size=%d%>",
446 flag_max_stack_var_size
);
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");
452 /* Implement -frecursive as -fmax-stack-var-size=-1. */
454 flag_max_stack_var_size
= -1;
456 /* Implied -frecursive; implemented as -fmax-stack-var-size=-1. */
457 if (flag_max_stack_var_size
== -2 && flag_automatic
458 && (flag_openmp
|| flag_openacc
))
461 flag_max_stack_var_size
= -1;
464 /* Set flag_stack_arrays correctly. */
465 if (flag_stack_arrays
== -1)
466 flag_stack_arrays
= 0;
469 if (flag_max_stack_var_size
== -2)
470 flag_max_stack_var_size
= 65536;
472 /* Implement -fno-automatic as -fmax-stack-var-size=0. */
474 flag_max_stack_var_size
= 0;
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. */
479 if (flag_inline_matmul_limit
< 0)
481 if (flag_external_blas
)
482 flag_inline_matmul_limit
= flag_blas_matmul_limit
;
484 flag_inline_matmul_limit
= 30;
487 /* Optimization implies front end optimization, unless the user
488 specified it directly. */
490 if (flag_frontend_optimize
== -1)
491 flag_frontend_optimize
= optimize
&& !optimize_debug
;
493 /* Same for front end loop interchange. */
495 if (flag_frontend_loop_interchange
== -1)
496 flag_frontend_loop_interchange
= optimize
;
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
;
503 if (flag_max_array_constructor
< 65535)
504 flag_max_array_constructor
= 65535;
506 if (flag_fixed_line_length
!= 0 && flag_fixed_line_length
< 7)
507 gfc_fatal_error ("Fixed line length must be at least seven");
509 if (flag_free_line_length
!= 0 && flag_free_line_length
< 4)
510 gfc_fatal_error ("Free line length must be at least three");
512 if (flag_max_subrecord_length
> MAX_SUBRECORD_LENGTH
)
513 gfc_fatal_error ("Maximum subrecord length cannot exceed %d",
514 MAX_SUBRECORD_LENGTH
);
516 gfc_cpp_post_options (verbose_missing_dir_warn
);
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";
523 return gfc_cpp_preprocess_only ();
528 gfc_handle_module_path_options (const char *arg
)
531 if (gfc_option
.module_dir
!= NULL
)
532 gfc_fatal_error ("gfortran: Only one %<-J%> option allowed");
534 gfc_option
.module_dir
= XCNEWVEC (char, strlen (arg
) + 2);
535 strcpy (gfc_option
.module_dir
, arg
);
537 gfc_add_include_path (gfc_option
.module_dir
, true, false, true, true);
539 strcat (gfc_option
.module_dir
, "/");
543 /* Handle options -ffpe-trap= and -ffpe-summary=. */
546 gfc_handle_fpe_option (const char *arg
, bool trap
)
548 int result
, pos
= 0, n
;
549 /* precision is a backwards compatibility alias for inexact. */
550 static const char * const exception
[] = { "invalid", "denormal", "zero",
551 "overflow", "underflow",
552 "inexact", "precision", NULL
};
553 static const int opt_exception
[] = { GFC_FPE_INVALID
, GFC_FPE_DENORMAL
,
554 GFC_FPE_ZERO
, GFC_FPE_OVERFLOW
,
555 GFC_FPE_UNDERFLOW
, GFC_FPE_INEXACT
,
559 /* As the default for -ffpe-summary= is nonzero, set it to 0. */
561 gfc_option
.fpe_summary
= 0;
568 while (arg
[pos
] && arg
[pos
] != ',')
572 if (strncmp ("none", arg
, pos
) == 0)
577 gfc_option
.fpe_summary
= 0;
582 else if (!trap
&& strncmp ("all", arg
, pos
) == 0)
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
;
592 for (n
= 0; exception
[n
] != NULL
; n
++)
594 if (exception
[n
] && strncmp (exception
[n
], arg
, pos
) == 0)
597 gfc_option
.fpe
|= opt_exception
[n
];
599 gfc_option
.fpe_summary
|= opt_exception
[n
];
607 gfc_fatal_error ("Argument to %<-ffpe-trap%> is not valid: %s", arg
);
609 gfc_fatal_error ("Argument to %<-ffpe-summary%> is not valid: %s", arg
);
616 gfc_handle_runtime_check_option (const char *arg
)
618 int result
, pos
= 0, n
;
619 static const char * const optname
[] = { "all", "bounds", "array-temps",
620 "recursion", "do", "pointer",
621 "mem", "bits", NULL
};
622 static const int optmask
[] = { GFC_RTCHECK_ALL
, GFC_RTCHECK_BOUNDS
,
623 GFC_RTCHECK_ARRAY_TEMPS
,
624 GFC_RTCHECK_RECURSION
, GFC_RTCHECK_DO
,
625 GFC_RTCHECK_POINTER
, GFC_RTCHECK_MEM
,
626 GFC_RTCHECK_BITS
, 0 };
633 while (arg
[pos
] && arg
[pos
] != ',')
637 for (n
= 0; optname
[n
] != NULL
; n
++)
639 if (optname
[n
] && strncmp (optname
[n
], arg
, pos
) == 0)
641 gfc_option
.rtcheck
|= optmask
[n
];
647 else if (optname
[n
] && pos
> 3 && startswith (arg
, "no-")
648 && strncmp (optname
[n
], arg
+3, pos
-3) == 0)
650 gfc_option
.rtcheck
&= ~optmask
[n
];
658 gfc_fatal_error ("Argument to %<-fcheck%> is not valid: %s", arg
);
663 /* Handle command-line options. Returns 0 if unrecognized, 1 if
664 recognized and handled. */
667 gfc_handle_option (size_t scode
, const char *arg
, HOST_WIDE_INT value
,
668 int kind ATTRIBUTE_UNUSED
, location_t loc ATTRIBUTE_UNUSED
,
669 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
)
672 enum opt_code code
= (enum opt_code
) scode
;
674 if (gfc_cpp_handle_option (scode
, arg
, value
) == 1)
680 if (cl_options
[code
].flags
& gfc_option_lang_mask ())
685 case OPT_fcheck_array_temporaries
:
686 SET_BITFLAG (gfc_option
.rtcheck
, value
, GFC_RTCHECK_ARRAY_TEMPS
);
689 case OPT_fd_lines_as_code
:
690 gfc_option
.flag_d_lines
= 1;
693 case OPT_fd_lines_as_comments
:
694 gfc_option
.flag_d_lines
= 0;
697 case OPT_ffixed_form
:
698 gfc_option
.source_form
= FORM_FIXED
;
702 gfc_option
.source_form
= FORM_FREE
;
705 case OPT_fintrinsic_modules_path
:
706 case OPT_fintrinsic_modules_path_
:
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. */
712 gfc_add_include_path (arg
, false, false, false, true);
714 gfc_add_intrinsic_modules_path (arg
);
717 case OPT_fpreprocessed
:
718 gfc_option
.flag_preprocessed
= value
;
721 case OPT_fmax_identifier_length_
:
722 if (value
> GFC_MAX_SYMBOL_LEN
)
723 gfc_fatal_error ("Maximum supported identifier length is %d",
725 gfc_option
.max_identifier_length
= value
;
728 case OPT_finit_local_zero
:
729 set_init_local_zero (value
);
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
;
738 gfc_fatal_error ("Unrecognized option to %<-finit-logical%>: %s",
742 case OPT_finit_integer_
:
743 gfc_option
.flag_init_integer
= GFC_INIT_INTEGER_ON
;
744 gfc_option
.flag_init_integer_value
= strtol (arg
, NULL
, 10);
747 case OPT_finit_character_
:
748 if (value
>= 0 && value
<= 127)
750 gfc_option
.flag_init_character
= GFC_INIT_CHARACTER_ON
;
751 gfc_option
.flag_init_character_value
= (char)value
;
754 gfc_fatal_error ("The value of n in %<-finit-character=n%> must be "
755 "between 0 and 127");
759 gfc_add_include_path (arg
, true, false, true, true);
763 gfc_handle_module_path_options (arg
);
767 gfc_handle_fpe_option (arg
, true);
770 case OPT_ffpe_summary_
:
771 gfc_handle_fpe_option (arg
, false);
775 gfc_option
.allow_std
= GFC_STD_OPT_F95
;
776 gfc_option
.warn_std
= GFC_STD_F95_OBS
;
777 gfc_option
.max_continue_fixed
= 19;
778 gfc_option
.max_continue_free
= 39;
779 gfc_option
.max_identifier_length
= 31;
785 gfc_option
.allow_std
= GFC_STD_OPT_F03
;
786 gfc_option
.warn_std
= GFC_STD_F95_OBS
;
787 gfc_option
.max_continue_fixed
= 255;
788 gfc_option
.max_continue_free
= 255;
789 gfc_option
.max_identifier_length
= 63;
795 gfc_option
.allow_std
= GFC_STD_OPT_F08
;
796 gfc_option
.warn_std
= GFC_STD_F95_OBS
| GFC_STD_F2008_OBS
;
797 gfc_option
.max_continue_free
= 255;
798 gfc_option
.max_continue_fixed
= 255;
799 gfc_option
.max_identifier_length
= 63;
804 case OPT_std_f2008ts
:
806 gfc_option
.allow_std
= GFC_STD_OPT_F18
;
807 gfc_option
.warn_std
= GFC_STD_F95_OBS
| GFC_STD_F2008_OBS
809 gfc_option
.max_continue_free
= 255;
810 gfc_option
.max_continue_fixed
= 255;
811 gfc_option
.max_identifier_length
= 63;
817 gfc_option
.allow_std
= GFC_STD_OPT_F23
;
818 gfc_option
.warn_std
= GFC_STD_F95_OBS
| GFC_STD_F2008_OBS
820 gfc_option
.max_identifier_length
= 63;
826 set_default_std_flags ();
830 set_default_std_flags ();
831 gfc_option
.warn_std
= 0;
834 case OPT_fshort_enums
:
835 /* Handled in language-independent code. */
839 gfc_handle_runtime_check_option (arg
);
843 /* Set (or unset) the DEC extension flags. */
844 set_dec_flags (value
);
848 Fortran_handle_option_auto (&global_options
, &global_options_set
,
850 gfc_option_lang_mask (), kind
,
851 loc
, handlers
, global_dc
);
856 /* Return a string with the options passed to the compiler; used for
857 Fortran's compiler_options() intrinsic. */
860 gfc_get_option_string (void)
866 /* Allocate and return a one-character string with '\0'. */
867 if (!save_decoded_options_count
)
868 return XCNEWVEC (char, 1);
870 /* Determine required string length. */
873 for (j
= 1; j
< save_decoded_options_count
; j
++)
875 switch (save_decoded_options
[j
].opt_index
)
880 case OPT_dumpbase_ext
:
884 case OPT_fintrinsic_modules_path
:
885 case OPT_fintrinsic_modules_path_
:
889 /* Ignore file names. */
890 if (save_decoded_options
[j
].orig_option_with_args_text
[0] == '-')
892 + strlen (save_decoded_options
[j
].orig_option_with_args_text
);
896 result
= XCNEWVEC (char, len
);
899 for (j
= 1; j
< save_decoded_options_count
; j
++)
901 switch (save_decoded_options
[j
].opt_index
)
906 case OPT_dumpbase_ext
:
910 case OPT_fintrinsic_modules_path
:
911 case OPT_fintrinsic_modules_path_
:
916 /* Use "-cpp" rather than "-cpp=<temporary file>". */
921 /* Ignore file names. */
922 if (save_decoded_options
[j
].orig_option_with_args_text
[0] != '-')
925 len
= strlen (save_decoded_options
[j
].orig_option_with_args_text
);
928 memcpy (&result
[pos
], save_decoded_options
[j
].orig_option_with_args_text
, len
);
933 result
[--pos
] = '\0';