1 /* Parse and display command line options.
2 Copyright (C) 2000-2013 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_realloc_lhs = 0;
113 gfc_option.warn_realloc_lhs_all = 0;
114 gfc_option.warn_compare_reals = 0;
115 gfc_option.warn_target_lifetime = 0;
116 gfc_option.max_errors = 25;
118 gfc_option.flag_all_intrinsics = 0;
119 gfc_option.flag_default_double = 0;
120 gfc_option.flag_default_integer = 0;
121 gfc_option.flag_default_real = 0;
122 gfc_option.flag_integer4_kind = 0;
123 gfc_option.flag_real4_kind = 0;
124 gfc_option.flag_real8_kind = 0;
125 gfc_option.flag_dollar_ok = 0;
126 gfc_option.flag_underscoring = 1;
127 gfc_option.flag_whole_file = 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 gfc_option.rtcheck = 0;
166 gfc_option.coarray = GFC_FCOARRAY_NONE;
168 set_default_std_flags ();
170 /* Initialize cpp-related options. */
171 gfc_cpp_init_options (decoded_options_count, decoded_options);
175 /* Determine the source form from the filename extension. We assume
176 case insensitivity. */
178 static gfc_source_form
179 form_from_filename (const char *filename)
183 const char *extension;
184 gfc_source_form form;
211 }; /* sentinel value */
213 gfc_source_form f_form;
217 /* Find end of file name. Note, filename is either a NULL pointer or
218 a NUL terminated string. */
220 while (filename[i] != '\0')
223 /* Find last period. */
224 while (i >= 0 && (filename[i] != '.'))
227 /* Did we see a file extension? */
229 return FORM_UNKNOWN; /* Nope */
231 /* Get file extension and compare it to others. */
232 fileext = &(filename[i]);
235 f_form = FORM_UNKNOWN;
239 if (strcasecmp (fileext, exttype[i].extension) == 0)
241 f_form = exttype[i].form;
245 while (exttype[i].form != FORM_UNKNOWN);
251 /* Finalize commandline options. */
254 gfc_post_options (const char **pfilename)
256 const char *filename = *pfilename, *canon_source_file = NULL;
260 /* Excess precision other than "fast" requires front-end
262 if (flag_excess_precision_cmdline == EXCESS_PRECISION_STANDARD
263 && TARGET_FLT_EVAL_METHOD_NON_DEFAULT)
264 sorry ("-fexcess-precision=standard for Fortran");
265 flag_excess_precision_cmdline = EXCESS_PRECISION_FAST;
267 /* Whole program needs whole file mode. */
268 if (flag_whole_program)
269 gfc_option.flag_whole_file = 1;
271 /* Enable whole-file mode if LTO is in effect. */
273 gfc_option.flag_whole_file = 1;
275 /* Fortran allows associative math - but we cannot reassociate if
276 we want traps or signed zeros. Cf. also flag_protect_parens. */
277 if (flag_associative_math == -1)
278 flag_associative_math = (!flag_trapping_math && !flag_signed_zeros);
280 if (gfc_option.flag_protect_parens == -1)
281 gfc_option.flag_protect_parens = !optimize_fast;
283 if (gfc_option.flag_stack_arrays == -1)
284 gfc_option.flag_stack_arrays = optimize_fast;
286 /* By default, disable (re)allocation during assignment for -std=f95,
287 and enable it for F2003/F2008/GNU/Legacy. */
288 if (gfc_option.flag_realloc_lhs == -1)
290 if (gfc_option.allow_std & GFC_STD_F2003)
291 gfc_option.flag_realloc_lhs = 1;
293 gfc_option.flag_realloc_lhs = 0;
296 /* -fbounds-check is equivalent to -fcheck=bounds */
297 if (flag_bounds_check)
298 gfc_option.rtcheck |= GFC_RTCHECK_BOUNDS;
300 if (flag_compare_debug)
301 gfc_option.dump_fortran_original = 0;
303 /* Make -fmax-errors visible to gfortran's diagnostic machinery. */
304 if (global_options_set.x_flag_max_errors)
305 gfc_option.max_errors = flag_max_errors;
307 /* Verify the input file name. */
308 if (!filename || strcmp (filename, "-") == 0)
313 if (gfc_option.flag_preprocessed)
315 /* For preprocessed files, if the first tokens are of the form # NUM.
316 handle the directives so we know the original file name. */
317 gfc_source_file = gfc_read_orig_filename (filename, &canon_source_file);
318 if (gfc_source_file == NULL)
319 gfc_source_file = filename;
321 *pfilename = gfc_source_file;
324 gfc_source_file = filename;
326 if (canon_source_file == NULL)
327 canon_source_file = gfc_source_file;
329 /* Adds the path where the source file is to the list of include files. */
331 i = strlen (canon_source_file);
332 while (i > 0 && !IS_DIR_SEPARATOR (canon_source_file[i]))
337 source_path = (char *) alloca (i + 1);
338 memcpy (source_path, canon_source_file, i);
340 gfc_add_include_path (source_path, true, true, true);
343 gfc_add_include_path (".", true, true, true);
345 if (canon_source_file != gfc_source_file)
346 free (CONST_CAST (char *, canon_source_file));
348 /* Decide which form the file will be read in as. */
350 if (gfc_option.source_form != FORM_UNKNOWN)
351 gfc_current_form = gfc_option.source_form;
354 gfc_current_form = form_from_filename (filename);
356 if (gfc_current_form == FORM_UNKNOWN)
358 gfc_current_form = FORM_FREE;
359 gfc_warning_now ("Reading file '%s' as free form",
360 (filename[0] == '\0') ? "<stdin>" : filename);
364 /* If the user specified -fd-lines-as-{code|comments} verify that we're
366 if (gfc_current_form == FORM_FREE)
368 if (gfc_option.flag_d_lines == 0)
369 gfc_warning_now ("'-fd-lines-as-comments' has no effect "
371 else if (gfc_option.flag_d_lines == 1)
372 gfc_warning_now ("'-fd-lines-as-code' has no effect in free form");
375 /* If -pedantic, warn about the use of GNU extensions. */
376 if (pedantic && (gfc_option.allow_std & GFC_STD_GNU) != 0)
377 gfc_option.warn_std |= GFC_STD_GNU;
378 /* -std=legacy -pedantic is effectively -std=gnu. */
379 if (pedantic && (gfc_option.allow_std & GFC_STD_LEGACY) != 0)
380 gfc_option.warn_std |= GFC_STD_F95_OBS | GFC_STD_F95_DEL | GFC_STD_LEGACY;
382 /* If the user didn't explicitly specify -f(no)-second-underscore we
383 use it if we're trying to be compatible with f2c, and not
385 if (gfc_option.flag_second_underscore == -1)
386 gfc_option.flag_second_underscore = gfc_option.flag_f2c;
388 if (!gfc_option.flag_automatic && gfc_option.flag_max_stack_var_size != -2
389 && gfc_option.flag_max_stack_var_size != 0)
390 gfc_warning_now ("Flag -fno-automatic overwrites -fmax-stack-var-size=%d",
391 gfc_option.flag_max_stack_var_size);
392 else if (!gfc_option.flag_automatic && gfc_option.flag_recursive)
393 gfc_warning_now ("Flag -fno-automatic overwrites -frecursive");
394 else if (!gfc_option.flag_automatic && gfc_option.gfc_flag_openmp)
395 gfc_warning_now ("Flag -fno-automatic overwrites -frecursive implied by "
397 else if (gfc_option.flag_max_stack_var_size != -2
398 && gfc_option.flag_recursive)
399 gfc_warning_now ("Flag -frecursive overwrites -fmax-stack-var-size=%d",
400 gfc_option.flag_max_stack_var_size);
401 else if (gfc_option.flag_max_stack_var_size != -2
402 && gfc_option.gfc_flag_openmp)
403 gfc_warning_now ("Flag -fmax-stack-var-size=%d overwrites -frecursive "
404 "implied by -fopenmp",
405 gfc_option.flag_max_stack_var_size);
407 /* Implement -frecursive as -fmax-stack-var-size=-1. */
408 if (gfc_option.flag_recursive)
409 gfc_option.flag_max_stack_var_size = -1;
411 /* Implied -frecursive; implemented as -fmax-stack-var-size=-1. */
412 if (gfc_option.flag_max_stack_var_size == -2 && gfc_option.gfc_flag_openmp
413 && gfc_option.flag_automatic)
415 gfc_option.flag_recursive = 1;
416 gfc_option.flag_max_stack_var_size = -1;
420 if (gfc_option.flag_max_stack_var_size == -2)
421 gfc_option.flag_max_stack_var_size = 32768;
423 /* Implement -fno-automatic as -fmax-stack-var-size=0. */
424 if (!gfc_option.flag_automatic)
425 gfc_option.flag_max_stack_var_size = 0;
429 gfc_option.warn_ampersand = 1;
430 gfc_option.warn_tabs = 0;
433 if (pedantic && gfc_option.flag_whole_file)
434 gfc_option.flag_whole_file = 2;
436 /* Optimization implies front end optimization, unless the user
437 specified it directly. */
439 if (gfc_option.flag_frontend_optimize == -1)
440 gfc_option.flag_frontend_optimize = optimize;
442 if (gfc_option.warn_realloc_lhs_all)
443 gfc_option.warn_realloc_lhs = 1;
445 gfc_cpp_post_options ();
447 /* FIXME: return gfc_cpp_preprocess_only ();
449 The return value of this function indicates whether the
450 backend needs to be initialized. On -E, we don't need
451 the backend. However, if we return 'true' here, an
452 ICE occurs. Initializing the backend doesn't hurt much,
453 hence, for now we can live with it as is. */
458 /* Set the options for -Wall. */
461 set_Wall (int setting)
463 gfc_option.warn_aliasing = setting;
464 gfc_option.warn_ampersand = setting;
465 gfc_option.warn_c_binding_type = setting;
466 gfc_option.gfc_warn_conversion = setting;
467 gfc_option.warn_line_truncation = setting;
468 gfc_option.warn_surprising = setting;
469 gfc_option.warn_tabs = !setting;
470 gfc_option.warn_underflow = setting;
471 gfc_option.warn_intrinsic_shadow = setting;
472 gfc_option.warn_intrinsics_std = setting;
473 gfc_option.warn_character_truncation = setting;
474 gfc_option.warn_real_q_constant = setting;
475 gfc_option.warn_unused_dummy_argument = setting;
476 gfc_option.warn_target_lifetime = setting;
478 warn_return_type = setting;
479 warn_uninitialized = setting;
480 warn_maybe_uninitialized = setting;
483 /* Set the options for -Wextra. */
486 set_Wextra (int setting)
488 gfc_option.warn_compare_reals = setting;
492 gfc_handle_module_path_options (const char *arg)
495 if (gfc_option.module_dir != NULL)
496 gfc_fatal_error ("gfortran: Only one -J option allowed");
498 gfc_option.module_dir = XCNEWVEC (char, strlen (arg) + 2);
499 strcpy (gfc_option.module_dir, arg);
501 gfc_add_include_path (gfc_option.module_dir, true, false, true);
503 strcat (gfc_option.module_dir, "/");
508 gfc_handle_fpe_trap_option (const char *arg)
510 int result, pos = 0, n;
511 /* precision is a backwards compatibility alias for inexact. */
512 static const char * const exception[] = { "invalid", "denormal", "zero",
513 "overflow", "underflow",
514 "inexact", "precision", NULL };
515 static const int opt_exception[] = { GFC_FPE_INVALID, GFC_FPE_DENORMAL,
516 GFC_FPE_ZERO, GFC_FPE_OVERFLOW,
517 GFC_FPE_UNDERFLOW, GFC_FPE_INEXACT,
526 while (arg[pos] && arg[pos] != ',')
530 for (n = 0; exception[n] != NULL; n++)
532 if (exception[n] && strncmp (exception[n], arg, pos) == 0)
534 gfc_option.fpe |= opt_exception[n];
542 gfc_fatal_error ("Argument to -ffpe-trap is not valid: %s", arg);
548 gfc_handle_coarray_option (const char *arg)
550 if (strcmp (arg, "none") == 0)
551 gfc_option.coarray = GFC_FCOARRAY_NONE;
552 else if (strcmp (arg, "single") == 0)
553 gfc_option.coarray = GFC_FCOARRAY_SINGLE;
554 else if (strcmp (arg, "lib") == 0)
555 gfc_option.coarray = GFC_FCOARRAY_LIB;
557 gfc_fatal_error ("Argument to -fcoarray is not valid: %s", arg);
562 gfc_handle_runtime_check_option (const char *arg)
564 int result, pos = 0, n;
565 static const char * const optname[] = { "all", "bounds", "array-temps",
566 "recursion", "do", "pointer",
568 static const int optmask[] = { GFC_RTCHECK_ALL, GFC_RTCHECK_BOUNDS,
569 GFC_RTCHECK_ARRAY_TEMPS,
570 GFC_RTCHECK_RECURSION, GFC_RTCHECK_DO,
571 GFC_RTCHECK_POINTER, GFC_RTCHECK_MEM,
579 while (arg[pos] && arg[pos] != ',')
583 for (n = 0; optname[n] != NULL; n++)
585 if (optname[n] && strncmp (optname[n], arg, pos) == 0)
587 gfc_option.rtcheck |= optmask[n];
595 gfc_fatal_error ("Argument to -fcheck is not valid: %s", arg);
600 /* Handle command-line options. Returns 0 if unrecognized, 1 if
601 recognized and handled. */
604 gfc_handle_option (size_t scode, const char *arg, int value,
605 int kind ATTRIBUTE_UNUSED, location_t loc ATTRIBUTE_UNUSED,
606 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED)
609 enum opt_code code = (enum opt_code) scode;
611 if (gfc_cpp_handle_option (scode, arg, value) == 1)
621 handle_generated_option (&global_options, &global_options_set,
622 OPT_Wunused, NULL, value,
623 gfc_option_lang_mask (), kind, loc,
624 handlers, global_dc);
629 gfc_option.warn_aliasing = value;
633 gfc_option.warn_ampersand = value;
636 case OPT_Warray_temporaries:
637 gfc_option.warn_array_temp = value;
640 case OPT_Wc_binding_type:
641 gfc_option.warn_c_binding_type = value;
644 case OPT_Wcharacter_truncation:
645 gfc_option.warn_character_truncation = value;
648 case OPT_Wcompare_reals:
649 gfc_option.warn_compare_reals = value;
652 case OPT_Wconversion:
653 gfc_option.gfc_warn_conversion = value;
656 case OPT_Wconversion_extra:
657 gfc_option.warn_conversion_extra = value;
661 handle_generated_option (&global_options, &global_options_set,
662 OPT_Wunused_parameter, NULL, value,
663 gfc_option_lang_mask (), kind, loc,
664 handlers, global_dc);
669 case OPT_Wfunction_elimination:
670 gfc_option.warn_function_elimination = value;
673 case OPT_Wimplicit_interface:
674 gfc_option.warn_implicit_interface = value;
677 case OPT_Wimplicit_procedure:
678 gfc_option.warn_implicit_procedure = value;
681 case OPT_Wline_truncation:
682 gfc_option.warn_line_truncation = value;
685 case OPT_Wrealloc_lhs:
686 gfc_option.warn_realloc_lhs = value;
689 case OPT_Wrealloc_lhs_all:
690 gfc_option.warn_realloc_lhs_all = value;
693 case OPT_Wreturn_type:
694 warn_return_type = value;
697 case OPT_Wsurprising:
698 gfc_option.warn_surprising = value;
702 gfc_option.warn_tabs = value;
705 case OPT_Wtarget_lifetime:
706 gfc_option.warn_target_lifetime = value;
710 gfc_option.warn_underflow = value;
713 case OPT_Wintrinsic_shadow:
714 gfc_option.warn_intrinsic_shadow = value;
717 case OPT_Walign_commons:
718 gfc_option.warn_align_commons = value;
721 case OPT_Wreal_q_constant:
722 gfc_option.warn_real_q_constant = value;
725 case OPT_Wunused_dummy_argument:
726 gfc_option.warn_unused_dummy_argument = value;
729 case OPT_fall_intrinsics:
730 gfc_option.flag_all_intrinsics = 1;
734 gfc_option.flag_automatic = value;
737 case OPT_fallow_leading_underscore:
738 gfc_option.flag_allow_leading_underscore = value;
742 gfc_option.flag_backslash = value;
746 gfc_option.flag_backtrace = value;
749 case OPT_fcheck_array_temporaries:
750 gfc_option.rtcheck |= GFC_RTCHECK_ARRAY_TEMPS;
753 case OPT_fcray_pointer:
754 gfc_option.flag_cray_pointer = value;
758 gfc_option.flag_f2c = value;
762 gfc_option.flag_dollar_ok = value;
765 case OPT_fexternal_blas:
766 gfc_option.flag_external_blas = value;
769 case OPT_fblas_matmul_limit_:
770 gfc_option.blas_matmul_limit = value;
773 case OPT_fd_lines_as_code:
774 gfc_option.flag_d_lines = 1;
777 case OPT_fd_lines_as_comments:
778 gfc_option.flag_d_lines = 0;
781 case OPT_fdump_fortran_original:
782 case OPT_fdump_parse_tree:
783 gfc_option.dump_fortran_original = value;
786 case OPT_fdump_fortran_optimized:
787 gfc_option.dump_fortran_optimized = value;
790 case OPT_ffixed_form:
791 gfc_option.source_form = FORM_FIXED;
794 case OPT_ffixed_line_length_none:
795 gfc_option.fixed_line_length = 0;
798 case OPT_ffixed_line_length_:
799 if (value != 0 && value < 7)
800 gfc_fatal_error ("Fixed line length must be at least seven.");
801 gfc_option.fixed_line_length = value;
805 gfc_option.source_form = FORM_FREE;
809 gfc_option.gfc_flag_openmp = value;
812 case OPT_ffree_line_length_none:
813 gfc_option.free_line_length = 0;
816 case OPT_ffree_line_length_:
817 if (value != 0 && value < 4)
818 gfc_fatal_error ("Free line length must be at least three.");
819 gfc_option.free_line_length = value;
822 case OPT_funderscoring:
823 gfc_option.flag_underscoring = value;
826 case OPT_fwhole_file:
827 gfc_option.flag_whole_file = value;
830 case OPT_fsecond_underscore:
831 gfc_option.flag_second_underscore = value;
834 case OPT_static_libgfortran:
835 #ifndef HAVE_LD_STATIC_DYNAMIC
836 gfc_fatal_error ("-static-libgfortran is not supported in this "
841 case OPT_fimplicit_none:
842 gfc_option.flag_implicit_none = value;
845 case OPT_fintrinsic_modules_path:
846 case OPT_fintrinsic_modules_path_:
848 /* This is needed because omp_lib.h is in a directory together
849 with intrinsic modules. Do no warn because during testing
850 without an installed compiler, we would get lots of bogus
851 warnings for a missing include directory. */
852 gfc_add_include_path (arg, false, false, false);
854 gfc_add_intrinsic_modules_path (arg);
857 case OPT_fmax_array_constructor_:
858 gfc_option.flag_max_array_constructor = value > 65535 ? value : 65535;
861 case OPT_fmax_stack_var_size_:
862 gfc_option.flag_max_stack_var_size = value;
865 case OPT_fstack_arrays:
866 gfc_option.flag_stack_arrays = value;
869 case OPT_fmodule_private:
870 gfc_option.flag_module_private = value;
873 case OPT_frange_check:
874 gfc_option.flag_range_check = value;
877 case OPT_fpack_derived:
878 gfc_option.flag_pack_derived = value;
881 case OPT_frepack_arrays:
882 gfc_option.flag_repack_arrays = value;
885 case OPT_fpreprocessed:
886 gfc_option.flag_preprocessed = value;
889 case OPT_fmax_identifier_length_:
890 if (value > GFC_MAX_SYMBOL_LEN)
891 gfc_fatal_error ("Maximum supported identifier length is %d",
893 gfc_option.max_identifier_length = value;
896 case OPT_fdefault_integer_8:
897 gfc_option.flag_default_integer = value;
900 case OPT_fdefault_real_8:
901 gfc_option.flag_default_real = value;
904 case OPT_fdefault_double_8:
905 gfc_option.flag_default_double = value;
908 case OPT_finteger_4_integer_8:
909 gfc_option.flag_integer4_kind = 8;
912 case OPT_freal_4_real_8:
913 gfc_option.flag_real4_kind = 8;
916 case OPT_freal_4_real_10:
917 gfc_option.flag_real4_kind = 10;
920 case OPT_freal_4_real_16:
921 gfc_option.flag_real4_kind = 16;
924 case OPT_freal_8_real_4:
925 gfc_option.flag_real8_kind = 4;
928 case OPT_freal_8_real_10:
929 gfc_option.flag_real8_kind = 10;
932 case OPT_freal_8_real_16:
933 gfc_option.flag_real8_kind = 16;
936 case OPT_finit_local_zero:
937 gfc_option.flag_init_integer = GFC_INIT_INTEGER_ON;
938 gfc_option.flag_init_integer_value = 0;
939 gfc_option.flag_init_real = GFC_INIT_REAL_ZERO;
940 gfc_option.flag_init_logical = GFC_INIT_LOGICAL_FALSE;
941 gfc_option.flag_init_character = GFC_INIT_CHARACTER_ON;
942 gfc_option.flag_init_character_value = (char)0;
945 case OPT_finit_logical_:
946 if (!strcasecmp (arg, "false"))
947 gfc_option.flag_init_logical = GFC_INIT_LOGICAL_FALSE;
948 else if (!strcasecmp (arg, "true"))
949 gfc_option.flag_init_logical = GFC_INIT_LOGICAL_TRUE;
951 gfc_fatal_error ("Unrecognized option to -finit-logical: %s",
955 case OPT_finit_real_:
956 if (!strcasecmp (arg, "zero"))
957 gfc_option.flag_init_real = GFC_INIT_REAL_ZERO;
958 else if (!strcasecmp (arg, "nan"))
959 gfc_option.flag_init_real = GFC_INIT_REAL_NAN;
960 else if (!strcasecmp (arg, "snan"))
961 gfc_option.flag_init_real = GFC_INIT_REAL_SNAN;
962 else if (!strcasecmp (arg, "inf"))
963 gfc_option.flag_init_real = GFC_INIT_REAL_INF;
964 else if (!strcasecmp (arg, "-inf"))
965 gfc_option.flag_init_real = GFC_INIT_REAL_NEG_INF;
967 gfc_fatal_error ("Unrecognized option to -finit-real: %s",
971 case OPT_finit_integer_:
972 gfc_option.flag_init_integer = GFC_INIT_INTEGER_ON;
973 gfc_option.flag_init_integer_value = atoi (arg);
976 case OPT_finit_character_:
977 if (value >= 0 && value <= 127)
979 gfc_option.flag_init_character = GFC_INIT_CHARACTER_ON;
980 gfc_option.flag_init_character_value = (char)value;
983 gfc_fatal_error ("The value of n in -finit-character=n must be "
984 "between 0 and 127");
988 gfc_add_include_path (arg, true, false, true);
992 gfc_handle_module_path_options (arg);
996 gfc_option.flag_sign_zero = value;
1000 gfc_handle_fpe_trap_option (arg);
1004 gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95 | GFC_STD_F77
1005 | GFC_STD_F2008_OBS;
1006 gfc_option.warn_std = GFC_STD_F95_OBS;
1007 gfc_option.max_continue_fixed = 19;
1008 gfc_option.max_continue_free = 39;
1009 gfc_option.max_identifier_length = 31;
1010 gfc_option.warn_ampersand = 1;
1011 gfc_option.warn_tabs = 0;
1015 gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F77
1016 | GFC_STD_F2003 | GFC_STD_F95 | GFC_STD_F2008_OBS;
1017 gfc_option.warn_std = GFC_STD_F95_OBS;
1018 gfc_option.max_identifier_length = 63;
1019 gfc_option.warn_ampersand = 1;
1020 gfc_option.warn_tabs = 0;
1024 gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F77
1025 | GFC_STD_F2003 | GFC_STD_F95 | GFC_STD_F2008 | GFC_STD_F2008_OBS;
1026 gfc_option.warn_std = GFC_STD_F95_OBS | GFC_STD_F2008_OBS;
1027 gfc_option.max_identifier_length = 63;
1028 gfc_option.warn_ampersand = 1;
1029 gfc_option.warn_tabs = 0;
1032 case OPT_std_f2008ts:
1033 gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F77
1034 | GFC_STD_F2003 | GFC_STD_F95 | GFC_STD_F2008 | GFC_STD_F2008_OBS
1036 gfc_option.warn_std = GFC_STD_F95_OBS | GFC_STD_F2008_OBS;
1037 gfc_option.max_identifier_length = 63;
1038 gfc_option.warn_ampersand = 1;
1039 gfc_option.warn_tabs = 0;
1043 set_default_std_flags ();
1046 case OPT_std_legacy:
1047 set_default_std_flags ();
1048 gfc_option.warn_std = 0;
1051 case OPT_Wintrinsics_std:
1052 gfc_option.warn_intrinsics_std = value;
1055 case OPT_fshort_enums:
1056 /* Handled in language-independent code. */
1059 case OPT_fconvert_little_endian:
1060 gfc_option.convert = GFC_CONVERT_LITTLE;
1063 case OPT_fconvert_big_endian:
1064 gfc_option.convert = GFC_CONVERT_BIG;
1067 case OPT_fconvert_native:
1068 gfc_option.convert = GFC_CONVERT_NATIVE;
1071 case OPT_fconvert_swap:
1072 gfc_option.convert = GFC_CONVERT_SWAP;
1075 case OPT_frecord_marker_4:
1076 gfc_option.record_marker = 4;
1079 case OPT_frecord_marker_8:
1080 gfc_option.record_marker = 8;
1083 case OPT_fmax_subrecord_length_:
1084 if (value > MAX_SUBRECORD_LENGTH)
1085 gfc_fatal_error ("Maximum subrecord length cannot exceed %d",
1086 MAX_SUBRECORD_LENGTH);
1088 gfc_option.max_subrecord_length = value;
1091 case OPT_frecursive:
1092 gfc_option.flag_recursive = value;
1095 case OPT_falign_commons:
1096 gfc_option.flag_align_commons = value;
1099 case OPT_faggressive_function_elimination:
1100 gfc_option.flag_aggressive_function_elimination = value;
1103 case OPT_ffrontend_optimize:
1104 gfc_option.flag_frontend_optimize = value;
1107 case OPT_fprotect_parens:
1108 gfc_option.flag_protect_parens = value;
1111 case OPT_frealloc_lhs:
1112 gfc_option.flag_realloc_lhs = value;
1116 gfc_handle_runtime_check_option (arg);
1120 gfc_handle_coarray_option (arg);
1124 Fortran_handle_option_auto (&global_options, &global_options_set,
1126 gfc_option_lang_mask (), kind,
1127 loc, handlers, global_dc);
1132 /* Return a string with the options passed to the compiler; used for
1133 Fortran's compiler_options() intrinsic. */
1136 gfc_get_option_string (void)
1142 /* Determine required string length. */
1145 for (j = 1; j < save_decoded_options_count; j++)
1147 switch (save_decoded_options[j].opt_index)
1156 case OPT_fintrinsic_modules_path:
1157 case OPT_fintrinsic_modules_path_:
1161 /* Ignore file names. */
1162 if (save_decoded_options[j].orig_option_with_args_text[0] == '-')
1164 + strlen (save_decoded_options[j].orig_option_with_args_text);
1168 result = XCNEWVEC (char, len);
1171 for (j = 1; j < save_decoded_options_count; j++)
1173 switch (save_decoded_options[j].opt_index)
1182 case OPT_fintrinsic_modules_path:
1183 case OPT_fintrinsic_modules_path_:
1188 /* Use "-cpp" rather than "-cpp=<temporary file>". */
1193 /* Ignore file names. */
1194 if (save_decoded_options[j].orig_option_with_args_text[0] != '-')
1197 len = strlen (save_decoded_options[j].orig_option_with_args_text);
1200 memcpy (&result[pos], save_decoded_options[j].orig_option_with_args_text, len);
1202 result[pos++] = ' ';
1205 result[--pos] = '\0';