1 /* Parse and display command line options.
2 Copyright (C) 2000-2014 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"
28 #include "toplev.h" /* For save_decoded_options. */
31 #include "tree-inline.h"
35 #include "diagnostic.h" /* For global_dc. */
38 gfc_option_t gfc_option
;
41 /* Set flags that control warnings and errors for different
42 Fortran standards to their default values. Keep in sync with
43 libgfortran/runtime/compile_options.c (init_compile_options). */
46 set_default_std_flags (void)
48 gfc_option
.allow_std
= GFC_STD_F95_OBS
| GFC_STD_F95_DEL
49 | GFC_STD_F2003
| GFC_STD_F2008
| GFC_STD_F95
| GFC_STD_F77
50 | GFC_STD_F2008_OBS
| GFC_STD_F2008_TS
| GFC_STD_GNU
| GFC_STD_LEGACY
;
51 gfc_option
.warn_std
= GFC_STD_F95_DEL
| GFC_STD_LEGACY
;
55 /* Return language mask for Fortran options. */
58 gfc_option_lang_mask (void)
63 /* Initialize options structure OPTS. */
66 gfc_init_options_struct (struct gcc_options
*opts
)
68 opts
->x_flag_errno_math
= 0;
69 opts
->x_flag_associative_math
= -1;
72 /* Get ready for options handling. Keep in sync with
73 libgfortran/runtime/compile_options.c (init_compile_options). */
76 gfc_init_options (unsigned int decoded_options_count
,
77 struct cl_decoded_option
*decoded_options
)
79 gfc_source_file
= NULL
;
80 gfc_option
.module_dir
= NULL
;
81 gfc_option
.source_form
= FORM_UNKNOWN
;
82 gfc_option
.fixed_line_length
= 72;
83 gfc_option
.free_line_length
= 132;
84 gfc_option
.max_continue_fixed
= 255;
85 gfc_option
.max_continue_free
= 255;
86 gfc_option
.max_identifier_length
= GFC_MAX_SYMBOL_LEN
;
87 gfc_option
.max_subrecord_length
= 0;
88 gfc_option
.flag_max_array_constructor
= 65535;
89 gfc_option
.convert
= GFC_CONVERT_NATIVE
;
90 gfc_option
.record_marker
= 0;
91 gfc_option
.dump_fortran_original
= 0;
92 gfc_option
.dump_fortran_optimized
= 0;
94 gfc_option
.warn_aliasing
= 0;
95 gfc_option
.warn_ampersand
= 0;
96 gfc_option
.warn_character_truncation
= 0;
97 gfc_option
.warn_array_temp
= 0;
98 gfc_option
.warn_c_binding_type
= 0;
99 gfc_option
.gfc_warn_conversion
= 0;
100 gfc_option
.warn_conversion_extra
= 0;
101 gfc_option
.warn_function_elimination
= 0;
102 gfc_option
.warn_implicit_interface
= 0;
103 gfc_option
.warn_line_truncation
= 0;
104 gfc_option
.warn_surprising
= 0;
105 gfc_option
.warn_tabs
= 1;
106 gfc_option
.warn_underflow
= 1;
107 gfc_option
.warn_intrinsic_shadow
= 0;
108 gfc_option
.warn_intrinsics_std
= 0;
109 gfc_option
.warn_align_commons
= 1;
110 gfc_option
.warn_real_q_constant
= 0;
111 gfc_option
.warn_unused_dummy_argument
= 0;
112 gfc_option
.warn_zerotrip
= 0;
113 gfc_option
.warn_realloc_lhs
= 0;
114 gfc_option
.warn_realloc_lhs_all
= 0;
115 gfc_option
.warn_compare_reals
= 0;
116 gfc_option
.warn_target_lifetime
= 0;
117 gfc_option
.max_errors
= 25;
119 gfc_option
.flag_all_intrinsics
= 0;
120 gfc_option
.flag_default_double
= 0;
121 gfc_option
.flag_default_integer
= 0;
122 gfc_option
.flag_default_real
= 0;
123 gfc_option
.flag_integer4_kind
= 0;
124 gfc_option
.flag_real4_kind
= 0;
125 gfc_option
.flag_real8_kind
= 0;
126 gfc_option
.flag_dollar_ok
= 0;
127 gfc_option
.flag_underscoring
= 1;
128 gfc_option
.flag_f2c
= 0;
129 gfc_option
.flag_second_underscore
= -1;
130 gfc_option
.flag_implicit_none
= 0;
132 /* Default value of flag_max_stack_var_size is set in gfc_post_options. */
133 gfc_option
.flag_max_stack_var_size
= -2;
134 gfc_option
.flag_stack_arrays
= -1;
136 gfc_option
.flag_range_check
= 1;
137 gfc_option
.flag_pack_derived
= 0;
138 gfc_option
.flag_repack_arrays
= 0;
139 gfc_option
.flag_preprocessed
= 0;
140 gfc_option
.flag_automatic
= 1;
141 gfc_option
.flag_backslash
= 0;
142 gfc_option
.flag_module_private
= 0;
143 gfc_option
.flag_backtrace
= 1;
144 gfc_option
.flag_allow_leading_underscore
= 0;
145 gfc_option
.flag_external_blas
= 0;
146 gfc_option
.blas_matmul_limit
= 30;
147 gfc_option
.flag_cray_pointer
= 0;
148 gfc_option
.flag_d_lines
= -1;
149 gfc_option
.gfc_flag_openmp
= 0;
150 gfc_option
.flag_sign_zero
= 1;
151 gfc_option
.flag_recursive
= 0;
152 gfc_option
.flag_init_integer
= GFC_INIT_INTEGER_OFF
;
153 gfc_option
.flag_init_integer_value
= 0;
154 gfc_option
.flag_init_real
= GFC_INIT_REAL_OFF
;
155 gfc_option
.flag_init_logical
= GFC_INIT_LOGICAL_OFF
;
156 gfc_option
.flag_init_character
= GFC_INIT_CHARACTER_OFF
;
157 gfc_option
.flag_init_character_value
= (char)0;
158 gfc_option
.flag_align_commons
= 1;
159 gfc_option
.flag_protect_parens
= -1;
160 gfc_option
.flag_realloc_lhs
= -1;
161 gfc_option
.flag_aggressive_function_elimination
= 0;
162 gfc_option
.flag_frontend_optimize
= -1;
165 /* All except GFC_FPE_INEXACT. */
166 gfc_option
.fpe_summary
= GFC_FPE_INVALID
| GFC_FPE_DENORMAL
167 | GFC_FPE_ZERO
| GFC_FPE_OVERFLOW
169 gfc_option
.rtcheck
= 0;
170 gfc_option
.coarray
= GFC_FCOARRAY_NONE
;
172 set_default_std_flags ();
174 /* Initialize cpp-related options. */
175 gfc_cpp_init_options (decoded_options_count
, decoded_options
);
179 /* Determine the source form from the filename extension. We assume
180 case insensitivity. */
182 static gfc_source_form
183 form_from_filename (const char *filename
)
187 const char *extension
;
188 gfc_source_form form
;
215 }; /* sentinel value */
217 gfc_source_form f_form
;
221 /* Find end of file name. Note, filename is either a NULL pointer or
222 a NUL terminated string. */
224 while (filename
[i
] != '\0')
227 /* Find last period. */
228 while (i
>= 0 && (filename
[i
] != '.'))
231 /* Did we see a file extension? */
233 return FORM_UNKNOWN
; /* Nope */
235 /* Get file extension and compare it to others. */
236 fileext
= &(filename
[i
]);
239 f_form
= FORM_UNKNOWN
;
243 if (strcasecmp (fileext
, exttype
[i
].extension
) == 0)
245 f_form
= exttype
[i
].form
;
249 while (exttype
[i
].form
!= FORM_UNKNOWN
);
255 /* Finalize commandline options. */
258 gfc_post_options (const char **pfilename
)
260 const char *filename
= *pfilename
, *canon_source_file
= NULL
;
264 /* Excess precision other than "fast" requires front-end
266 if (flag_excess_precision_cmdline
== EXCESS_PRECISION_STANDARD
267 && TARGET_FLT_EVAL_METHOD_NON_DEFAULT
)
268 sorry ("-fexcess-precision=standard for Fortran");
269 flag_excess_precision_cmdline
= EXCESS_PRECISION_FAST
;
271 /* Fortran allows associative math - but we cannot reassociate if
272 we want traps or signed zeros. Cf. also flag_protect_parens. */
273 if (flag_associative_math
== -1)
274 flag_associative_math
= (!flag_trapping_math
&& !flag_signed_zeros
);
276 if (gfc_option
.flag_protect_parens
== -1)
277 gfc_option
.flag_protect_parens
= !optimize_fast
;
279 if (gfc_option
.flag_stack_arrays
== -1)
280 gfc_option
.flag_stack_arrays
= optimize_fast
;
282 /* By default, disable (re)allocation during assignment for -std=f95,
283 and enable it for F2003/F2008/GNU/Legacy. */
284 if (gfc_option
.flag_realloc_lhs
== -1)
286 if (gfc_option
.allow_std
& GFC_STD_F2003
)
287 gfc_option
.flag_realloc_lhs
= 1;
289 gfc_option
.flag_realloc_lhs
= 0;
292 /* -fbounds-check is equivalent to -fcheck=bounds */
293 if (flag_bounds_check
)
294 gfc_option
.rtcheck
|= GFC_RTCHECK_BOUNDS
;
296 if (flag_compare_debug
)
297 gfc_option
.dump_fortran_original
= 0;
299 /* Make -fmax-errors visible to gfortran's diagnostic machinery. */
300 if (global_options_set
.x_flag_max_errors
)
301 gfc_option
.max_errors
= flag_max_errors
;
303 /* Verify the input file name. */
304 if (!filename
|| strcmp (filename
, "-") == 0)
309 if (gfc_option
.flag_preprocessed
)
311 /* For preprocessed files, if the first tokens are of the form # NUM.
312 handle the directives so we know the original file name. */
313 gfc_source_file
= gfc_read_orig_filename (filename
, &canon_source_file
);
314 if (gfc_source_file
== NULL
)
315 gfc_source_file
= filename
;
317 *pfilename
= gfc_source_file
;
320 gfc_source_file
= filename
;
322 if (canon_source_file
== NULL
)
323 canon_source_file
= gfc_source_file
;
325 /* Adds the path where the source file is to the list of include files. */
327 i
= strlen (canon_source_file
);
328 while (i
> 0 && !IS_DIR_SEPARATOR (canon_source_file
[i
]))
333 source_path
= (char *) alloca (i
+ 1);
334 memcpy (source_path
, canon_source_file
, i
);
336 gfc_add_include_path (source_path
, true, true, true);
339 gfc_add_include_path (".", true, true, true);
341 if (canon_source_file
!= gfc_source_file
)
342 free (CONST_CAST (char *, canon_source_file
));
344 /* Decide which form the file will be read in as. */
346 if (gfc_option
.source_form
!= FORM_UNKNOWN
)
347 gfc_current_form
= gfc_option
.source_form
;
350 gfc_current_form
= form_from_filename (filename
);
352 if (gfc_current_form
== FORM_UNKNOWN
)
354 gfc_current_form
= FORM_FREE
;
355 gfc_warning_now ("Reading file '%s' as free form",
356 (filename
[0] == '\0') ? "<stdin>" : filename
);
360 /* If the user specified -fd-lines-as-{code|comments} verify that we're
362 if (gfc_current_form
== FORM_FREE
)
364 if (gfc_option
.flag_d_lines
== 0)
365 gfc_warning_now ("'-fd-lines-as-comments' has no effect "
367 else if (gfc_option
.flag_d_lines
== 1)
368 gfc_warning_now ("'-fd-lines-as-code' has no effect in free form");
371 /* If -pedantic, warn about the use of GNU extensions. */
372 if (pedantic
&& (gfc_option
.allow_std
& GFC_STD_GNU
) != 0)
373 gfc_option
.warn_std
|= GFC_STD_GNU
;
374 /* -std=legacy -pedantic is effectively -std=gnu. */
375 if (pedantic
&& (gfc_option
.allow_std
& GFC_STD_LEGACY
) != 0)
376 gfc_option
.warn_std
|= GFC_STD_F95_OBS
| GFC_STD_F95_DEL
| GFC_STD_LEGACY
;
378 /* If the user didn't explicitly specify -f(no)-second-underscore we
379 use it if we're trying to be compatible with f2c, and not
381 if (gfc_option
.flag_second_underscore
== -1)
382 gfc_option
.flag_second_underscore
= gfc_option
.flag_f2c
;
384 if (!gfc_option
.flag_automatic
&& gfc_option
.flag_max_stack_var_size
!= -2
385 && gfc_option
.flag_max_stack_var_size
!= 0)
386 gfc_warning_now ("Flag -fno-automatic overwrites -fmax-stack-var-size=%d",
387 gfc_option
.flag_max_stack_var_size
);
388 else if (!gfc_option
.flag_automatic
&& gfc_option
.flag_recursive
)
389 gfc_warning_now ("Flag -fno-automatic overwrites -frecursive");
390 else if (!gfc_option
.flag_automatic
&& gfc_option
.gfc_flag_openmp
)
391 gfc_warning_now ("Flag -fno-automatic overwrites -frecursive implied by "
393 else if (gfc_option
.flag_max_stack_var_size
!= -2
394 && gfc_option
.flag_recursive
)
395 gfc_warning_now ("Flag -frecursive overwrites -fmax-stack-var-size=%d",
396 gfc_option
.flag_max_stack_var_size
);
397 else if (gfc_option
.flag_max_stack_var_size
!= -2
398 && gfc_option
.gfc_flag_openmp
)
399 gfc_warning_now ("Flag -fmax-stack-var-size=%d overwrites -frecursive "
400 "implied by -fopenmp",
401 gfc_option
.flag_max_stack_var_size
);
403 /* Implement -frecursive as -fmax-stack-var-size=-1. */
404 if (gfc_option
.flag_recursive
)
405 gfc_option
.flag_max_stack_var_size
= -1;
407 /* Implied -frecursive; implemented as -fmax-stack-var-size=-1. */
408 if (gfc_option
.flag_max_stack_var_size
== -2 && gfc_option
.gfc_flag_openmp
409 && gfc_option
.flag_automatic
)
411 gfc_option
.flag_recursive
= 1;
412 gfc_option
.flag_max_stack_var_size
= -1;
416 if (gfc_option
.flag_max_stack_var_size
== -2)
417 gfc_option
.flag_max_stack_var_size
= 32768;
419 /* Implement -fno-automatic as -fmax-stack-var-size=0. */
420 if (!gfc_option
.flag_automatic
)
421 gfc_option
.flag_max_stack_var_size
= 0;
425 gfc_option
.warn_ampersand
= 1;
426 gfc_option
.warn_tabs
= 0;
429 /* Optimization implies front end optimization, unless the user
430 specified it directly. */
432 if (gfc_option
.flag_frontend_optimize
== -1)
433 gfc_option
.flag_frontend_optimize
= optimize
;
435 if (gfc_option
.warn_realloc_lhs_all
)
436 gfc_option
.warn_realloc_lhs
= 1;
438 gfc_cpp_post_options ();
440 return gfc_cpp_preprocess_only ();
444 /* Set the options for -Wall. */
447 set_Wall (int setting
)
449 gfc_option
.warn_aliasing
= setting
;
450 gfc_option
.warn_ampersand
= setting
;
451 gfc_option
.warn_c_binding_type
= setting
;
452 gfc_option
.gfc_warn_conversion
= setting
;
453 gfc_option
.warn_line_truncation
= setting
;
454 gfc_option
.warn_surprising
= setting
;
455 gfc_option
.warn_tabs
= !setting
;
456 gfc_option
.warn_underflow
= setting
;
457 gfc_option
.warn_intrinsic_shadow
= setting
;
458 gfc_option
.warn_intrinsics_std
= setting
;
459 gfc_option
.warn_character_truncation
= setting
;
460 gfc_option
.warn_real_q_constant
= setting
;
461 gfc_option
.warn_unused_dummy_argument
= setting
;
462 gfc_option
.warn_target_lifetime
= setting
;
463 gfc_option
.warn_zerotrip
= setting
;
465 warn_return_type
= setting
;
466 warn_uninitialized
= setting
;
467 warn_maybe_uninitialized
= setting
;
470 /* Set the options for -Wextra. */
473 set_Wextra (int setting
)
475 gfc_option
.warn_compare_reals
= setting
;
479 gfc_handle_module_path_options (const char *arg
)
482 if (gfc_option
.module_dir
!= NULL
)
483 gfc_fatal_error ("gfortran: Only one -J option allowed");
485 gfc_option
.module_dir
= XCNEWVEC (char, strlen (arg
) + 2);
486 strcpy (gfc_option
.module_dir
, arg
);
488 gfc_add_include_path (gfc_option
.module_dir
, true, false, true);
490 strcat (gfc_option
.module_dir
, "/");
494 /* Handle options -ffpe-trap= and -ffpe-summary=. */
497 gfc_handle_fpe_option (const char *arg
, bool trap
)
499 int result
, pos
= 0, n
;
500 /* precision is a backwards compatibility alias for inexact. */
501 static const char * const exception
[] = { "invalid", "denormal", "zero",
502 "overflow", "underflow",
503 "inexact", "precision", NULL
};
504 static const int opt_exception
[] = { GFC_FPE_INVALID
, GFC_FPE_DENORMAL
,
505 GFC_FPE_ZERO
, GFC_FPE_OVERFLOW
,
506 GFC_FPE_UNDERFLOW
, GFC_FPE_INEXACT
,
510 /* As the default for -ffpe-summary= is nonzero, set it to 0. */
512 gfc_option
.fpe_summary
= 0;
519 while (arg
[pos
] && arg
[pos
] != ',')
523 if (!trap
&& strncmp ("none", arg
, pos
) == 0)
525 gfc_option
.fpe_summary
= 0;
530 else if (!trap
&& strncmp ("all", arg
, pos
) == 0)
532 gfc_option
.fpe_summary
= GFC_FPE_INVALID
| GFC_FPE_DENORMAL
533 | GFC_FPE_ZERO
| GFC_FPE_OVERFLOW
534 | GFC_FPE_UNDERFLOW
| GFC_FPE_INEXACT
;
540 for (n
= 0; exception
[n
] != NULL
; n
++)
542 if (exception
[n
] && strncmp (exception
[n
], arg
, pos
) == 0)
545 gfc_option
.fpe
|= opt_exception
[n
];
547 gfc_option
.fpe_summary
|= opt_exception
[n
];
554 if (!result
&& !trap
)
555 gfc_fatal_error ("Argument to -ffpe-trap is not valid: %s", arg
);
557 gfc_fatal_error ("Argument to -ffpe-summary is not valid: %s", arg
);
564 gfc_handle_coarray_option (const char *arg
)
566 if (strcmp (arg
, "none") == 0)
567 gfc_option
.coarray
= GFC_FCOARRAY_NONE
;
568 else if (strcmp (arg
, "single") == 0)
569 gfc_option
.coarray
= GFC_FCOARRAY_SINGLE
;
570 else if (strcmp (arg
, "lib") == 0)
571 gfc_option
.coarray
= GFC_FCOARRAY_LIB
;
573 gfc_fatal_error ("Argument to -fcoarray is not valid: %s", arg
);
578 gfc_handle_runtime_check_option (const char *arg
)
580 int result
, pos
= 0, n
;
581 static const char * const optname
[] = { "all", "bounds", "array-temps",
582 "recursion", "do", "pointer",
584 static const int optmask
[] = { GFC_RTCHECK_ALL
, GFC_RTCHECK_BOUNDS
,
585 GFC_RTCHECK_ARRAY_TEMPS
,
586 GFC_RTCHECK_RECURSION
, GFC_RTCHECK_DO
,
587 GFC_RTCHECK_POINTER
, GFC_RTCHECK_MEM
,
595 while (arg
[pos
] && arg
[pos
] != ',')
599 for (n
= 0; optname
[n
] != NULL
; n
++)
601 if (optname
[n
] && strncmp (optname
[n
], arg
, pos
) == 0)
603 gfc_option
.rtcheck
|= optmask
[n
];
611 gfc_fatal_error ("Argument to -fcheck is not valid: %s", arg
);
616 /* Handle command-line options. Returns 0 if unrecognized, 1 if
617 recognized and handled. */
620 gfc_handle_option (size_t scode
, const char *arg
, int value
,
621 int kind ATTRIBUTE_UNUSED
, location_t loc ATTRIBUTE_UNUSED
,
622 const struct cl_option_handlers
*handlers ATTRIBUTE_UNUSED
)
625 enum opt_code code
= (enum opt_code
) scode
;
627 if (gfc_cpp_handle_option (scode
, arg
, value
) == 1)
637 handle_generated_option (&global_options
, &global_options_set
,
638 OPT_Wunused
, NULL
, value
,
639 gfc_option_lang_mask (), kind
, loc
,
640 handlers
, global_dc
);
645 gfc_option
.warn_aliasing
= value
;
649 gfc_option
.warn_ampersand
= value
;
652 case OPT_Warray_temporaries
:
653 gfc_option
.warn_array_temp
= value
;
656 case OPT_Wc_binding_type
:
657 gfc_option
.warn_c_binding_type
= value
;
660 case OPT_Wcharacter_truncation
:
661 gfc_option
.warn_character_truncation
= value
;
664 case OPT_Wcompare_reals
:
665 gfc_option
.warn_compare_reals
= value
;
668 case OPT_Wconversion
:
669 gfc_option
.gfc_warn_conversion
= value
;
672 case OPT_Wconversion_extra
:
673 gfc_option
.warn_conversion_extra
= value
;
677 handle_generated_option (&global_options
, &global_options_set
,
678 OPT_Wunused_parameter
, NULL
, value
,
679 gfc_option_lang_mask (), kind
, loc
,
680 handlers
, global_dc
);
685 case OPT_Wfunction_elimination
:
686 gfc_option
.warn_function_elimination
= value
;
689 case OPT_Wimplicit_interface
:
690 gfc_option
.warn_implicit_interface
= value
;
693 case OPT_Wimplicit_procedure
:
694 gfc_option
.warn_implicit_procedure
= value
;
697 case OPT_Wline_truncation
:
698 gfc_option
.warn_line_truncation
= value
;
701 case OPT_Wrealloc_lhs
:
702 gfc_option
.warn_realloc_lhs
= value
;
705 case OPT_Wrealloc_lhs_all
:
706 gfc_option
.warn_realloc_lhs_all
= value
;
709 case OPT_Wreturn_type
:
710 warn_return_type
= value
;
713 case OPT_Wsurprising
:
714 gfc_option
.warn_surprising
= value
;
718 gfc_option
.warn_tabs
= value
;
721 case OPT_Wtarget_lifetime
:
722 gfc_option
.warn_target_lifetime
= value
;
726 gfc_option
.warn_underflow
= value
;
729 case OPT_Wintrinsic_shadow
:
730 gfc_option
.warn_intrinsic_shadow
= value
;
733 case OPT_Walign_commons
:
734 gfc_option
.warn_align_commons
= value
;
737 case OPT_Wreal_q_constant
:
738 gfc_option
.warn_real_q_constant
= value
;
741 case OPT_Wunused_dummy_argument
:
742 gfc_option
.warn_unused_dummy_argument
= value
;
746 gfc_option
.warn_zerotrip
= value
;
749 case OPT_fall_intrinsics
:
750 gfc_option
.flag_all_intrinsics
= 1;
754 gfc_option
.flag_automatic
= value
;
757 case OPT_fallow_leading_underscore
:
758 gfc_option
.flag_allow_leading_underscore
= value
;
762 gfc_option
.flag_backslash
= value
;
766 gfc_option
.flag_backtrace
= value
;
769 case OPT_fcheck_array_temporaries
:
770 gfc_option
.rtcheck
|= GFC_RTCHECK_ARRAY_TEMPS
;
773 case OPT_fcray_pointer
:
774 gfc_option
.flag_cray_pointer
= value
;
778 gfc_option
.flag_f2c
= value
;
782 gfc_option
.flag_dollar_ok
= value
;
785 case OPT_fexternal_blas
:
786 gfc_option
.flag_external_blas
= value
;
789 case OPT_fblas_matmul_limit_
:
790 gfc_option
.blas_matmul_limit
= value
;
793 case OPT_fd_lines_as_code
:
794 gfc_option
.flag_d_lines
= 1;
797 case OPT_fd_lines_as_comments
:
798 gfc_option
.flag_d_lines
= 0;
801 case OPT_fdump_fortran_original
:
802 case OPT_fdump_parse_tree
:
803 gfc_option
.dump_fortran_original
= value
;
806 case OPT_fdump_fortran_optimized
:
807 gfc_option
.dump_fortran_optimized
= value
;
810 case OPT_ffixed_form
:
811 gfc_option
.source_form
= FORM_FIXED
;
814 case OPT_ffixed_line_length_none
:
815 gfc_option
.fixed_line_length
= 0;
818 case OPT_ffixed_line_length_
:
819 if (value
!= 0 && value
< 7)
820 gfc_fatal_error ("Fixed line length must be at least seven.");
821 gfc_option
.fixed_line_length
= value
;
825 gfc_option
.source_form
= FORM_FREE
;
829 gfc_option
.gfc_flag_openmp
= value
;
832 case OPT_fopenmp_simd
:
833 gfc_option
.gfc_flag_openmp_simd
= value
;
836 case OPT_ffree_line_length_none
:
837 gfc_option
.free_line_length
= 0;
840 case OPT_ffree_line_length_
:
841 if (value
!= 0 && value
< 4)
842 gfc_fatal_error ("Free line length must be at least three.");
843 gfc_option
.free_line_length
= value
;
846 case OPT_funderscoring
:
847 gfc_option
.flag_underscoring
= value
;
850 case OPT_fsecond_underscore
:
851 gfc_option
.flag_second_underscore
= value
;
854 case OPT_static_libgfortran
:
855 #ifndef HAVE_LD_STATIC_DYNAMIC
856 gfc_fatal_error ("-static-libgfortran is not supported in this "
861 case OPT_fimplicit_none
:
862 gfc_option
.flag_implicit_none
= value
;
865 case OPT_fintrinsic_modules_path
:
866 case OPT_fintrinsic_modules_path_
:
868 /* This is needed because omp_lib.h is in a directory together
869 with intrinsic modules. Do no warn because during testing
870 without an installed compiler, we would get lots of bogus
871 warnings for a missing include directory. */
872 gfc_add_include_path (arg
, false, false, false);
874 gfc_add_intrinsic_modules_path (arg
);
877 case OPT_fmax_array_constructor_
:
878 gfc_option
.flag_max_array_constructor
= value
> 65535 ? value
: 65535;
881 case OPT_fmax_stack_var_size_
:
882 gfc_option
.flag_max_stack_var_size
= value
;
885 case OPT_fstack_arrays
:
886 gfc_option
.flag_stack_arrays
= value
;
889 case OPT_fmodule_private
:
890 gfc_option
.flag_module_private
= value
;
893 case OPT_frange_check
:
894 gfc_option
.flag_range_check
= value
;
897 case OPT_fpack_derived
:
898 gfc_option
.flag_pack_derived
= value
;
901 case OPT_frepack_arrays
:
902 gfc_option
.flag_repack_arrays
= value
;
905 case OPT_fpreprocessed
:
906 gfc_option
.flag_preprocessed
= value
;
909 case OPT_fmax_identifier_length_
:
910 if (value
> GFC_MAX_SYMBOL_LEN
)
911 gfc_fatal_error ("Maximum supported identifier length is %d",
913 gfc_option
.max_identifier_length
= value
;
916 case OPT_fdefault_integer_8
:
917 gfc_option
.flag_default_integer
= value
;
920 case OPT_fdefault_real_8
:
921 gfc_option
.flag_default_real
= value
;
924 case OPT_fdefault_double_8
:
925 gfc_option
.flag_default_double
= value
;
928 case OPT_finteger_4_integer_8
:
929 gfc_option
.flag_integer4_kind
= 8;
932 case OPT_freal_4_real_8
:
933 gfc_option
.flag_real4_kind
= 8;
936 case OPT_freal_4_real_10
:
937 gfc_option
.flag_real4_kind
= 10;
940 case OPT_freal_4_real_16
:
941 gfc_option
.flag_real4_kind
= 16;
944 case OPT_freal_8_real_4
:
945 gfc_option
.flag_real8_kind
= 4;
948 case OPT_freal_8_real_10
:
949 gfc_option
.flag_real8_kind
= 10;
952 case OPT_freal_8_real_16
:
953 gfc_option
.flag_real8_kind
= 16;
956 case OPT_finit_local_zero
:
957 gfc_option
.flag_init_integer
= GFC_INIT_INTEGER_ON
;
958 gfc_option
.flag_init_integer_value
= 0;
959 gfc_option
.flag_init_real
= GFC_INIT_REAL_ZERO
;
960 gfc_option
.flag_init_logical
= GFC_INIT_LOGICAL_FALSE
;
961 gfc_option
.flag_init_character
= GFC_INIT_CHARACTER_ON
;
962 gfc_option
.flag_init_character_value
= (char)0;
965 case OPT_finit_logical_
:
966 if (!strcasecmp (arg
, "false"))
967 gfc_option
.flag_init_logical
= GFC_INIT_LOGICAL_FALSE
;
968 else if (!strcasecmp (arg
, "true"))
969 gfc_option
.flag_init_logical
= GFC_INIT_LOGICAL_TRUE
;
971 gfc_fatal_error ("Unrecognized option to -finit-logical: %s",
975 case OPT_finit_real_
:
976 if (!strcasecmp (arg
, "zero"))
977 gfc_option
.flag_init_real
= GFC_INIT_REAL_ZERO
;
978 else if (!strcasecmp (arg
, "nan"))
979 gfc_option
.flag_init_real
= GFC_INIT_REAL_NAN
;
980 else if (!strcasecmp (arg
, "snan"))
981 gfc_option
.flag_init_real
= GFC_INIT_REAL_SNAN
;
982 else if (!strcasecmp (arg
, "inf"))
983 gfc_option
.flag_init_real
= GFC_INIT_REAL_INF
;
984 else if (!strcasecmp (arg
, "-inf"))
985 gfc_option
.flag_init_real
= GFC_INIT_REAL_NEG_INF
;
987 gfc_fatal_error ("Unrecognized option to -finit-real: %s",
991 case OPT_finit_integer_
:
992 gfc_option
.flag_init_integer
= GFC_INIT_INTEGER_ON
;
993 gfc_option
.flag_init_integer_value
= atoi (arg
);
996 case OPT_finit_character_
:
997 if (value
>= 0 && value
<= 127)
999 gfc_option
.flag_init_character
= GFC_INIT_CHARACTER_ON
;
1000 gfc_option
.flag_init_character_value
= (char)value
;
1003 gfc_fatal_error ("The value of n in -finit-character=n must be "
1004 "between 0 and 127");
1008 gfc_add_include_path (arg
, true, false, true);
1012 gfc_handle_module_path_options (arg
);
1015 case OPT_fsign_zero
:
1016 gfc_option
.flag_sign_zero
= value
;
1019 case OPT_ffpe_trap_
:
1020 gfc_handle_fpe_option (arg
, true);
1023 case OPT_ffpe_summary_
:
1024 gfc_handle_fpe_option (arg
, false);
1028 gfc_option
.allow_std
= GFC_STD_F95_OBS
| GFC_STD_F95
| GFC_STD_F77
1029 | GFC_STD_F2008_OBS
;
1030 gfc_option
.warn_std
= GFC_STD_F95_OBS
;
1031 gfc_option
.max_continue_fixed
= 19;
1032 gfc_option
.max_continue_free
= 39;
1033 gfc_option
.max_identifier_length
= 31;
1034 gfc_option
.warn_ampersand
= 1;
1035 gfc_option
.warn_tabs
= 0;
1039 gfc_option
.allow_std
= GFC_STD_F95_OBS
| GFC_STD_F77
1040 | GFC_STD_F2003
| GFC_STD_F95
| GFC_STD_F2008_OBS
;
1041 gfc_option
.warn_std
= GFC_STD_F95_OBS
;
1042 gfc_option
.max_identifier_length
= 63;
1043 gfc_option
.warn_ampersand
= 1;
1044 gfc_option
.warn_tabs
= 0;
1048 gfc_option
.allow_std
= GFC_STD_F95_OBS
| GFC_STD_F77
1049 | GFC_STD_F2003
| GFC_STD_F95
| GFC_STD_F2008
| GFC_STD_F2008_OBS
;
1050 gfc_option
.warn_std
= GFC_STD_F95_OBS
| GFC_STD_F2008_OBS
;
1051 gfc_option
.max_identifier_length
= 63;
1052 gfc_option
.warn_ampersand
= 1;
1053 gfc_option
.warn_tabs
= 0;
1056 case OPT_std_f2008ts
:
1057 gfc_option
.allow_std
= GFC_STD_F95_OBS
| GFC_STD_F77
1058 | GFC_STD_F2003
| GFC_STD_F95
| GFC_STD_F2008
| GFC_STD_F2008_OBS
1060 gfc_option
.warn_std
= GFC_STD_F95_OBS
| GFC_STD_F2008_OBS
;
1061 gfc_option
.max_identifier_length
= 63;
1062 gfc_option
.warn_ampersand
= 1;
1063 gfc_option
.warn_tabs
= 0;
1067 set_default_std_flags ();
1070 case OPT_std_legacy
:
1071 set_default_std_flags ();
1072 gfc_option
.warn_std
= 0;
1075 case OPT_Wintrinsics_std
:
1076 gfc_option
.warn_intrinsics_std
= value
;
1079 case OPT_fshort_enums
:
1080 /* Handled in language-independent code. */
1083 case OPT_fconvert_little_endian
:
1084 gfc_option
.convert
= GFC_CONVERT_LITTLE
;
1087 case OPT_fconvert_big_endian
:
1088 gfc_option
.convert
= GFC_CONVERT_BIG
;
1091 case OPT_fconvert_native
:
1092 gfc_option
.convert
= GFC_CONVERT_NATIVE
;
1095 case OPT_fconvert_swap
:
1096 gfc_option
.convert
= GFC_CONVERT_SWAP
;
1099 case OPT_frecord_marker_4
:
1100 gfc_option
.record_marker
= 4;
1103 case OPT_frecord_marker_8
:
1104 gfc_option
.record_marker
= 8;
1107 case OPT_fmax_subrecord_length_
:
1108 if (value
> MAX_SUBRECORD_LENGTH
)
1109 gfc_fatal_error ("Maximum subrecord length cannot exceed %d",
1110 MAX_SUBRECORD_LENGTH
);
1112 gfc_option
.max_subrecord_length
= value
;
1115 case OPT_frecursive
:
1116 gfc_option
.flag_recursive
= value
;
1119 case OPT_falign_commons
:
1120 gfc_option
.flag_align_commons
= value
;
1123 case OPT_faggressive_function_elimination
:
1124 gfc_option
.flag_aggressive_function_elimination
= value
;
1127 case OPT_ffrontend_optimize
:
1128 gfc_option
.flag_frontend_optimize
= value
;
1131 case OPT_fprotect_parens
:
1132 gfc_option
.flag_protect_parens
= value
;
1135 case OPT_frealloc_lhs
:
1136 gfc_option
.flag_realloc_lhs
= value
;
1140 gfc_handle_runtime_check_option (arg
);
1144 gfc_handle_coarray_option (arg
);
1148 Fortran_handle_option_auto (&global_options
, &global_options_set
,
1150 gfc_option_lang_mask (), kind
,
1151 loc
, handlers
, global_dc
);
1156 /* Return a string with the options passed to the compiler; used for
1157 Fortran's compiler_options() intrinsic. */
1160 gfc_get_option_string (void)
1166 /* Allocate and return a one-character string with '\0'. */
1167 if (!save_decoded_options_count
)
1168 return XCNEWVEC (char, 1);
1170 /* Determine required string length. */
1173 for (j
= 1; j
< save_decoded_options_count
; j
++)
1175 switch (save_decoded_options
[j
].opt_index
)
1184 case OPT_fintrinsic_modules_path
:
1185 case OPT_fintrinsic_modules_path_
:
1189 /* Ignore file names. */
1190 if (save_decoded_options
[j
].orig_option_with_args_text
[0] == '-')
1192 + strlen (save_decoded_options
[j
].orig_option_with_args_text
);
1196 result
= XCNEWVEC (char, len
);
1199 for (j
= 1; j
< save_decoded_options_count
; j
++)
1201 switch (save_decoded_options
[j
].opt_index
)
1210 case OPT_fintrinsic_modules_path
:
1211 case OPT_fintrinsic_modules_path_
:
1216 /* Use "-cpp" rather than "-cpp=<temporary file>". */
1221 /* Ignore file names. */
1222 if (save_decoded_options
[j
].orig_option_with_args_text
[0] != '-')
1225 len
= strlen (save_decoded_options
[j
].orig_option_with_args_text
);
1228 memcpy (&result
[pos
], save_decoded_options
[j
].orig_option_with_args_text
, len
);
1230 result
[pos
++] = ' ';
1233 result
[--pos
] = '\0';