1 /* Parse and display command line options.
2 Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
3 Free Software Foundation, Inc.
4 Contributed by Andy Vaught
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 2, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING. If not, write to the Free
20 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
25 #include "coretypes.h"
32 #include "tree-inline.h"
36 gfc_option_t gfc_option
;
39 /* Get ready for options handling. */
42 gfc_init_options (unsigned int argc ATTRIBUTE_UNUSED
,
43 const char **argv ATTRIBUTE_UNUSED
)
45 gfc_source_file
= NULL
;
46 gfc_option
.module_dir
= NULL
;
47 gfc_option
.source_form
= FORM_UNKNOWN
;
48 gfc_option
.fixed_line_length
= 72;
49 gfc_option
.free_line_length
= 132;
50 gfc_option
.max_continue_fixed
= 19;
51 gfc_option
.max_continue_free
= 39;
52 gfc_option
.max_identifier_length
= GFC_MAX_SYMBOL_LEN
;
53 gfc_option
.max_subrecord_length
= 0;
54 gfc_option
.convert
= CONVERT_NATIVE
;
55 gfc_option
.record_marker
= 0;
56 gfc_option
.verbose
= 0;
58 gfc_option
.warn_aliasing
= 0;
59 gfc_option
.warn_ampersand
= 0;
60 gfc_option
.warn_character_truncation
= 0;
61 gfc_option
.warn_conversion
= 0;
62 gfc_option
.warn_implicit_interface
= 0;
63 gfc_option
.warn_line_truncation
= 0;
64 gfc_option
.warn_surprising
= 0;
65 gfc_option
.warn_tabs
= 1;
66 gfc_option
.warn_underflow
= 1;
67 gfc_option
.max_errors
= 25;
69 gfc_option
.flag_all_intrinsics
= 0;
70 gfc_option
.flag_default_double
= 0;
71 gfc_option
.flag_default_integer
= 0;
72 gfc_option
.flag_default_real
= 0;
73 gfc_option
.flag_dollar_ok
= 0;
74 gfc_option
.flag_underscoring
= 1;
75 gfc_option
.flag_f2c
= 0;
76 gfc_option
.flag_second_underscore
= -1;
77 gfc_option
.flag_implicit_none
= 0;
78 gfc_option
.flag_max_stack_var_size
= 32768;
79 gfc_option
.flag_range_check
= 1;
80 gfc_option
.flag_pack_derived
= 0;
81 gfc_option
.flag_repack_arrays
= 0;
82 gfc_option
.flag_preprocessed
= 0;
83 gfc_option
.flag_automatic
= 1;
84 gfc_option
.flag_backslash
= 1;
85 gfc_option
.flag_allow_leading_underscore
= 0;
86 gfc_option
.flag_dump_core
= 0;
87 gfc_option
.flag_external_blas
= 0;
88 gfc_option
.blas_matmul_limit
= 30;
89 gfc_option
.flag_cray_pointer
= 0;
90 gfc_option
.flag_d_lines
= -1;
91 gfc_option
.flag_openmp
= 0;
95 /* Argument pointers cannot point to anything but their argument. */
96 flag_argument_noalias
= 3;
100 gfc_option
.allow_std
= GFC_STD_F95_OBS
| GFC_STD_F95_DEL
101 | GFC_STD_F2003
| GFC_STD_F95
| GFC_STD_F77
| GFC_STD_GNU
103 gfc_option
.warn_std
= GFC_STD_F95_DEL
| GFC_STD_LEGACY
;
105 gfc_option
.warn_nonstd_intrinsics
= 0;
107 /* -fshort-enums can be default on some targets. */
108 gfc_option
.fshort_enums
= targetm
.default_short_enums ();
110 /* Increase MAX_ALIASED_VOPS to account for different characteristics
111 of Fortran regarding VOPs. */
112 MAX_ALIASED_VOPS
= 50;
118 /* Determine the source form from the filename extension. We assume
119 case insensitivity. */
121 static gfc_source_form
122 form_from_filename (const char *filename
)
126 const char *extension
;
127 gfc_source_form form
;
148 }; /* sentinel value */
150 gfc_source_form f_form
;
154 /* Find end of file name. Note, filename is either a NULL pointer or
155 a NUL terminated string. */
157 while (filename
[i
] != '\0')
160 /* Find last period. */
161 while (i
>= 0 && (filename
[i
] != '.'))
164 /* Did we see a file extension? */
166 return FORM_UNKNOWN
; /* Nope */
168 /* Get file extension and compare it to others. */
169 fileext
= &(filename
[i
]);
172 f_form
= FORM_UNKNOWN
;
176 if (strcasecmp (fileext
, exttype
[i
].extension
) == 0)
178 f_form
= exttype
[i
].form
;
182 while (exttype
[i
].form
!= FORM_UNKNOWN
);
188 /* Finalize commandline options. */
191 gfc_post_options (const char **pfilename
)
193 const char *filename
= *pfilename
, *canon_source_file
= NULL
;
197 /* Verify the input file name. */
198 if (!filename
|| strcmp (filename
, "-") == 0)
203 if (gfc_option
.flag_preprocessed
)
205 /* For preprocessed files, if the first tokens are of the form # NUM.
206 handle the directives so we know the original file name. */
207 gfc_source_file
= gfc_read_orig_filename (filename
, &canon_source_file
);
208 if (gfc_source_file
== NULL
)
209 gfc_source_file
= filename
;
211 *pfilename
= gfc_source_file
;
214 gfc_source_file
= filename
;
216 if (canon_source_file
== NULL
)
217 canon_source_file
= gfc_source_file
;
219 /* Adds the path where the source file is to the list of include files. */
221 i
= strlen (canon_source_file
);
222 while (i
> 0 && !IS_DIR_SEPARATOR (canon_source_file
[i
]))
227 source_path
= alloca (i
+ 1);
228 memcpy (source_path
, canon_source_file
, i
);
230 gfc_add_include_path (source_path
, true);
233 gfc_add_include_path (".", true);
235 if (canon_source_file
!= gfc_source_file
)
236 gfc_free ((void *) canon_source_file
);
238 /* Decide which form the file will be read in as. */
240 if (gfc_option
.source_form
!= FORM_UNKNOWN
)
241 gfc_current_form
= gfc_option
.source_form
;
244 gfc_current_form
= form_from_filename (filename
);
246 if (gfc_current_form
== FORM_UNKNOWN
)
248 gfc_current_form
= FORM_FREE
;
249 gfc_warning_now ("Reading file '%s' as free form",
250 (filename
[0] == '\0') ? "<stdin>" : filename
);
254 /* If the user specified -fd-lines-as-{code|comments} verify that we're
256 if (gfc_current_form
== FORM_FREE
)
258 if (gfc_option
.flag_d_lines
== 0)
259 gfc_warning_now ("'-fd-lines-as-comments' has no effect "
261 else if (gfc_option
.flag_d_lines
== 1)
262 gfc_warning_now ("'-fd-lines-as-code' has no effect in free form");
265 flag_inline_trees
= 1;
267 /* Use tree inlining. */
270 if (flag_inline_functions
)
271 flag_inline_trees
= 2;
273 /* If -pedantic, warn about the use of GNU extensions. */
274 if (pedantic
&& (gfc_option
.allow_std
& GFC_STD_GNU
) != 0)
275 gfc_option
.warn_std
|= GFC_STD_GNU
;
276 /* -std=legacy -pedantic is effectively -std=gnu. */
277 if (pedantic
&& (gfc_option
.allow_std
& GFC_STD_LEGACY
) != 0)
278 gfc_option
.warn_std
|= GFC_STD_F95_OBS
| GFC_STD_F95_DEL
| GFC_STD_LEGACY
;
280 /* If the user didn't explicitly specify -f(no)-second-underscore we
281 use it if we're trying to be compatible with f2c, and not
283 if (gfc_option
.flag_second_underscore
== -1)
284 gfc_option
.flag_second_underscore
= gfc_option
.flag_f2c
;
286 /* Implement -fno-automatic as -fmax-stack-var-size=0. */
287 if (!gfc_option
.flag_automatic
)
288 gfc_option
.flag_max_stack_var_size
= 0;
292 gfc_option
.warn_ampersand
= 1;
293 gfc_option
.warn_tabs
= 0;
296 if (gfc_option
.flag_all_intrinsics
)
297 gfc_option
.warn_nonstd_intrinsics
= 0;
303 /* Set the options for -Wall. */
306 set_Wall (int setting
)
308 gfc_option
.warn_aliasing
= setting
;
309 gfc_option
.warn_ampersand
= setting
;
310 gfc_option
.warn_line_truncation
= setting
;
311 gfc_option
.warn_nonstd_intrinsics
= setting
;
312 gfc_option
.warn_surprising
= setting
;
313 gfc_option
.warn_tabs
= !setting
;
314 gfc_option
.warn_underflow
= setting
;
315 gfc_option
.warn_character_truncation
= setting
;
317 set_Wunused (setting
);
318 warn_return_type
= setting
;
319 warn_switch
= setting
;
321 /* We save the value of warn_uninitialized, since if they put
322 -Wuninitialized on the command line, we need to generate a
323 warning about not using it without also specifying -O. */
325 warn_uninitialized
= 0;
326 else if (warn_uninitialized
!= 1)
327 warn_uninitialized
= 2;
332 gfc_handle_module_path_options (const char *arg
)
335 if (gfc_option
.module_dir
!= NULL
)
337 gfc_status ("gfortran: Only one -M option allowed\n");
343 gfc_status ("gfortran: Directory required after -M\n");
347 gfc_option
.module_dir
= (char *) gfc_getmem (strlen (arg
) + 2);
348 strcpy (gfc_option
.module_dir
, arg
);
349 strcat (gfc_option
.module_dir
, "/");
351 gfc_add_include_path (gfc_option
.module_dir
, true);
356 gfc_handle_fpe_trap_option (const char *arg
)
358 int result
, pos
= 0, n
;
359 static const char * const exception
[] = { "invalid", "denormal", "zero",
360 "overflow", "underflow",
362 static const int opt_exception
[] = { GFC_FPE_INVALID
, GFC_FPE_DENORMAL
,
363 GFC_FPE_ZERO
, GFC_FPE_OVERFLOW
,
364 GFC_FPE_UNDERFLOW
, GFC_FPE_PRECISION
,
372 while (arg
[pos
] && arg
[pos
] != ',')
376 for (n
= 0; exception
[n
] != NULL
; n
++)
378 if (exception
[n
] && strncmp (exception
[n
], arg
, pos
) == 0)
380 gfc_option
.fpe
|= opt_exception
[n
];
388 gfc_fatal_error ("Argument to -ffpe-trap is not valid: %s", arg
);
393 /* Handle command-line options. Returns 0 if unrecognized, 1 if
394 recognized and handled. */
397 gfc_handle_option (size_t scode
, const char *arg
, int value
)
400 enum opt_code code
= (enum opt_code
) scode
;
402 /* Ignore file names. */
417 gfc_option
.warn_aliasing
= value
;
421 gfc_option
.warn_ampersand
= value
;
424 case OPT_Wcharacter_truncation
:
425 gfc_option
.warn_character_truncation
= value
;
428 case OPT_Wconversion
:
429 gfc_option
.warn_conversion
= value
;
432 case OPT_Wimplicit_interface
:
433 gfc_option
.warn_implicit_interface
= value
;
436 case OPT_Wline_truncation
:
437 gfc_option
.warn_line_truncation
= value
;
440 case OPT_Wsurprising
:
441 gfc_option
.warn_surprising
= value
;
445 gfc_option
.warn_tabs
= value
;
449 gfc_option
.warn_underflow
= value
;
452 case OPT_fall_intrinsics
:
453 gfc_option
.flag_all_intrinsics
= 1;
457 gfc_option
.flag_automatic
= value
;
460 case OPT_fallow_leading_underscore
:
461 gfc_option
.flag_allow_leading_underscore
= value
;
465 gfc_option
.flag_backslash
= value
;
469 gfc_option
.flag_dump_core
= value
;
472 case OPT_fcray_pointer
:
473 gfc_option
.flag_cray_pointer
= value
;
477 gfc_option
.flag_f2c
= value
;
481 gfc_option
.flag_dollar_ok
= value
;
484 case OPT_fexternal_blas
:
485 gfc_option
.flag_external_blas
= value
;
488 case OPT_fblas_matmul_limit_
:
489 gfc_option
.blas_matmul_limit
= value
;
492 case OPT_fd_lines_as_code
:
493 gfc_option
.flag_d_lines
= 1;
496 case OPT_fd_lines_as_comments
:
497 gfc_option
.flag_d_lines
= 0;
500 case OPT_fdump_parse_tree
:
501 gfc_option
.verbose
= value
;
504 case OPT_ffixed_form
:
505 gfc_option
.source_form
= FORM_FIXED
;
508 case OPT_ffixed_line_length_none
:
509 gfc_option
.fixed_line_length
= 0;
512 case OPT_ffixed_line_length_
:
513 if (value
!= 0 && value
< 7)
514 gfc_fatal_error ("Fixed line length must be at least seven.");
515 gfc_option
.fixed_line_length
= value
;
519 gfc_option
.source_form
= FORM_FREE
;
523 gfc_option
.flag_openmp
= value
;
526 case OPT_ffree_line_length_none
:
527 gfc_option
.free_line_length
= 0;
530 case OPT_ffree_line_length_
:
531 gfc_option
.free_line_length
= value
;
534 case OPT_funderscoring
:
535 gfc_option
.flag_underscoring
= value
;
538 case OPT_fsecond_underscore
:
539 gfc_option
.flag_second_underscore
= value
;
542 case OPT_fimplicit_none
:
543 gfc_option
.flag_implicit_none
= value
;
546 case OPT_fintrinsic_modules_path
:
547 gfc_add_include_path (arg
, false);
548 gfc_add_intrinsic_modules_path (arg
);
551 case OPT_fmax_errors_
:
552 gfc_option
.max_errors
= value
;
555 case OPT_fmax_stack_var_size_
:
556 gfc_option
.flag_max_stack_var_size
= value
;
559 case OPT_frange_check
:
560 gfc_option
.flag_range_check
= value
;
563 case OPT_fpack_derived
:
564 gfc_option
.flag_pack_derived
= value
;
567 case OPT_frepack_arrays
:
568 gfc_option
.flag_repack_arrays
= value
;
571 case OPT_fpreprocessed
:
572 gfc_option
.flag_preprocessed
= value
;
575 case OPT_fmax_identifier_length_
:
576 if (value
> GFC_MAX_SYMBOL_LEN
)
577 gfc_fatal_error ("Maximum supported identifier length is %d",
579 gfc_option
.max_identifier_length
= value
;
582 case OPT_fdefault_integer_8
:
583 gfc_option
.flag_default_integer
= value
;
586 case OPT_fdefault_real_8
:
587 gfc_option
.flag_default_real
= value
;
590 case OPT_fdefault_double_8
:
591 gfc_option
.flag_default_double
= value
;
595 gfc_add_include_path (arg
, true);
600 gfc_handle_module_path_options (arg
);
604 gfc_handle_fpe_trap_option (arg
);
608 gfc_option
.allow_std
= GFC_STD_F95_OBS
| GFC_STD_F95
| GFC_STD_F77
;
609 gfc_option
.warn_std
= GFC_STD_F95_OBS
;
610 gfc_option
.max_identifier_length
= 31;
611 gfc_option
.warn_ampersand
= 1;
612 gfc_option
.warn_tabs
= 0;
616 gfc_option
.allow_std
= GFC_STD_F95_OBS
| GFC_STD_F77
617 | GFC_STD_F2003
| GFC_STD_F95
;
618 gfc_option
.warn_std
= GFC_STD_F95_OBS
;
619 gfc_option
.max_continue_fixed
= 255;
620 gfc_option
.max_continue_free
= 255;
621 gfc_option
.max_identifier_length
= 63;
622 gfc_option
.warn_ampersand
= 1;
623 gfc_option
.warn_tabs
= 0;
627 gfc_option
.allow_std
= GFC_STD_F95_OBS
| GFC_STD_F95_DEL
628 | GFC_STD_F77
| GFC_STD_F95
| GFC_STD_F2003
629 | GFC_STD_GNU
| GFC_STD_LEGACY
;
630 gfc_option
.warn_std
= GFC_STD_F95_OBS
| GFC_STD_F95_DEL
635 gfc_option
.allow_std
= GFC_STD_F95_OBS
| GFC_STD_F95_DEL
636 | GFC_STD_F77
| GFC_STD_F95
| GFC_STD_F2003
637 | GFC_STD_GNU
| GFC_STD_LEGACY
;
638 gfc_option
.warn_std
= 0;
641 case OPT_Wnonstd_intrinsics
:
642 gfc_option
.warn_nonstd_intrinsics
= value
;
645 case OPT_fshort_enums
:
646 gfc_option
.fshort_enums
= 1;
649 case OPT_fconvert_little_endian
:
650 gfc_option
.convert
= CONVERT_LITTLE
;
653 case OPT_fconvert_big_endian
:
654 gfc_option
.convert
= CONVERT_BIG
;
657 case OPT_fconvert_native
:
658 gfc_option
.convert
= CONVERT_NATIVE
;
661 case OPT_fconvert_swap
:
662 gfc_option
.convert
= CONVERT_SWAP
;
665 case OPT_frecord_marker_4
:
666 gfc_option
.record_marker
= 4;
669 case OPT_frecord_marker_8
:
670 gfc_option
.record_marker
= 8;
673 case OPT_fmax_subrecord_length_
:
674 if (value
> MAX_SUBRECORD_LENGTH
)
675 gfc_fatal_error ("Maximum subrecord length cannot exceed %d",
676 MAX_SUBRECORD_LENGTH
);
678 gfc_option
.max_subrecord_length
= value
;