1 /* Parse and display command line options.
2 Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation,
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, 59 Temple Place - Suite 330, Boston, MA
26 #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_option.source = NULL;
46 gfc_option.module_dir = NULL;
47 gfc_option.source_form = FORM_UNKNOWN;
48 gfc_option.fixed_line_length = 72;
49 gfc_option.max_identifier_length = GFC_MAX_SYMBOL_LEN;
50 gfc_option.verbose = 0;
52 gfc_option.warn_aliasing = 0;
53 gfc_option.warn_conversion = 0;
54 gfc_option.warn_implicit_interface = 0;
55 gfc_option.warn_line_truncation = 0;
56 gfc_option.warn_underflow = 1;
57 gfc_option.warn_surprising = 0;
58 gfc_option.warn_unused_labels = 0;
60 gfc_option.flag_default_double = 0;
61 gfc_option.flag_default_integer = 0;
62 gfc_option.flag_default_real = 0;
63 gfc_option.flag_dollar_ok = 0;
64 gfc_option.flag_underscoring = 1;
65 gfc_option.flag_f2c = 0;
66 gfc_option.flag_second_underscore = -1;
67 gfc_option.flag_implicit_none = 0;
68 gfc_option.flag_max_stack_var_size = 32768;
69 gfc_option.flag_module_access_private = 0;
70 gfc_option.flag_no_backend = 0;
71 gfc_option.flag_pack_derived = 0;
72 gfc_option.flag_repack_arrays = 0;
74 gfc_option.q_kind = gfc_default_double_kind;
76 flag_argument_noalias = 2;
79 gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL
80 | GFC_STD_F2003 | GFC_STD_F95 | GFC_STD_F77 | GFC_STD_GNU
82 gfc_option.warn_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL
83 | GFC_STD_F2003 | GFC_STD_LEGACY;
85 gfc_option.warn_nonstd_intrinsics = 0;
91 /* Finalize commandline options. */
94 gfc_post_options (const char **pfilename)
96 const char *filename = *pfilename;
98 /* Verify the input file name. */
99 if (!filename || strcmp (filename, "-") == 0)
104 gfc_option.source = filename;
106 flag_inline_trees = 1;
108 /* Use tree inlining. */
111 if (flag_inline_functions)
112 flag_inline_trees = 2;
114 /* If -pedantic, warn about the use of GNU extensions. */
115 if (pedantic && (gfc_option.allow_std & GFC_STD_GNU) != 0)
116 gfc_option.warn_std |= GFC_STD_GNU;
117 /* -std=legacy -pedantic is effectively -std=gnu. */
118 if (pedantic && (gfc_option.allow_std & GFC_STD_LEGACY) != 0)
119 gfc_option.warn_std |= GFC_STD_F95_OBS | GFC_STD_F95_DEL | GFC_STD_LEGACY;
121 /* If the user didn't explicitly specify -f(no)-second-underscore we
122 use it if we're trying to be compatible with f2c, and not
124 if (gfc_option.flag_second_underscore == -1)
125 gfc_option.flag_second_underscore = gfc_option.flag_f2c;
131 /* Set the options for -Wall. */
137 gfc_option.warn_aliasing = 1;
138 gfc_option.warn_line_truncation = 1;
139 gfc_option.warn_underflow = 1;
140 gfc_option.warn_surprising = 1;
141 gfc_option.warn_unused_labels = 1;
142 gfc_option.warn_nonstd_intrinsics = 1;
145 warn_return_type = 1;
148 /* We save the value of warn_uninitialized, since if they put
149 -Wuninitialized on the command line, we need to generate a
150 warning about not using it without also specifying -O. */
152 if (warn_uninitialized != 1)
153 warn_uninitialized = 2;
158 gfc_handle_module_path_options (const char *arg)
161 if (gfc_option.module_dir != NULL)
163 gfc_status ("gfortran: Only one -M option allowed\n");
169 gfc_status ("gfortran: Directory required after -M\n");
173 gfc_option.module_dir = (char *) gfc_getmem (strlen (arg) + 2);
174 strcpy (gfc_option.module_dir, arg);
175 strcat (gfc_option.module_dir, "/");
178 /* Handle command-line options. Returns 0 if unrecognized, 1 if
179 recognized and handled. */
181 gfc_handle_option (size_t scode, const char *arg, int value)
184 enum opt_code code = (enum opt_code) scode;
186 /* Ignore file names. */
201 gfc_option.warn_aliasing = value;
204 case OPT_Wconversion:
205 gfc_option.warn_conversion = value;
208 case OPT_Wimplicit_interface:
209 gfc_option.warn_implicit_interface = value;
212 case OPT_Wline_truncation:
213 gfc_option.warn_line_truncation = value;
217 gfc_option.warn_underflow = value;
220 case OPT_Wsurprising:
221 gfc_option.warn_surprising = value;
224 case OPT_Wunused_labels:
225 gfc_option.warn_unused_labels = value;
229 gfc_option.flag_f2c = value;
233 gfc_option.flag_dollar_ok = value;
236 case OPT_fdump_parse_tree:
237 gfc_option.verbose = value;
240 case OPT_ffixed_form:
241 gfc_option.source_form = FORM_FIXED;
245 gfc_option.source_form = FORM_FREE;
248 case OPT_funderscoring:
249 gfc_option.flag_underscoring = value;
252 case OPT_fsecond_underscore:
253 gfc_option.flag_second_underscore = value;
256 case OPT_fimplicit_none:
257 gfc_option.flag_implicit_none = value;
260 case OPT_fmax_stack_var_size_:
261 gfc_option.flag_max_stack_var_size = value;
264 case OPT_fmodule_private:
265 gfc_option.flag_module_access_private = value;
268 case OPT_fno_backend:
269 gfc_option.flag_no_backend = value;
272 case OPT_fpack_derived:
273 gfc_option.flag_pack_derived = value;
276 case OPT_frepack_arrays:
277 gfc_option.flag_repack_arrays = value;
280 case OPT_ffixed_line_length_none:
281 gfc_option.fixed_line_length = 0;
284 case OPT_ffixed_line_length_:
285 if (value != 0 && value < 7)
286 gfc_fatal_error ("Fixed line length must be at least seven.");
287 gfc_option.fixed_line_length = value;
290 case OPT_fmax_identifier_length_:
291 if (value > GFC_MAX_SYMBOL_LEN)
292 gfc_fatal_error ("Maximum supported idenitifier length is %d",
294 gfc_option.max_identifier_length = value;
298 if (gfc_validate_kind (BT_REAL, value, true) < 0)
299 gfc_fatal_error ("Argument to -fqkind isn't a valid real kind");
300 gfc_option.q_kind = value;
303 case OPT_fdefault_integer_8:
304 gfc_option.flag_default_integer = value;
307 case OPT_fdefault_real_8:
308 gfc_option.flag_default_real = value;
311 case OPT_fdefault_double_8:
312 gfc_option.flag_default_double = value;
316 gfc_add_include_path (arg);
321 gfc_handle_module_path_options (arg);
325 gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95 | GFC_STD_F77;
326 gfc_option.warn_std = GFC_STD_F95_OBS;
327 gfc_option.max_identifier_length = 31;
331 gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F77
332 | GFC_STD_F2003 | GFC_STD_F95;
333 gfc_option.warn_std = GFC_STD_F95_OBS;
334 gfc_option.max_identifier_length = 63;
338 gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL
339 | GFC_STD_F77 | GFC_STD_F95 | GFC_STD_F2003
340 | GFC_STD_GNU | GFC_STD_LEGACY;
341 gfc_option.warn_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL
346 gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL
347 | GFC_STD_F77 | GFC_STD_F95 | GFC_STD_F2003
348 | GFC_STD_GNU | GFC_STD_LEGACY;
349 gfc_option.warn_std = 0;
352 case OPT_Wnonstd_intrinsics:
353 gfc_option.warn_nonstd_intrinsics = 1;