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)
46 gfc_option.source = NULL;
47 gfc_option.module_dir = NULL;
48 gfc_option.source_form = FORM_UNKNOWN;
49 gfc_option.fixed_line_length = 72;
50 gfc_option.max_identifier_length = GFC_MAX_SYMBOL_LEN;
51 gfc_option.verbose = 0;
53 gfc_option.warn_aliasing = 0;
54 gfc_option.warn_conversion = 0;
55 gfc_option.warn_implicit_interface = 0;
56 gfc_option.warn_line_truncation = 0;
57 gfc_option.warn_underflow = 1;
58 gfc_option.warn_surprising = 0;
59 gfc_option.warn_unused_labels = 0;
61 gfc_option.flag_dollar_ok = 0;
62 gfc_option.flag_underscoring = 1;
63 gfc_option.flag_second_underscore = 1;
64 gfc_option.flag_implicit_none = 0;
65 gfc_option.flag_max_stack_var_size = 32768;
66 gfc_option.flag_module_access_private = 0;
67 gfc_option.flag_no_backend = 0;
68 gfc_option.flag_pack_derived = 0;
69 gfc_option.flag_repack_arrays = 0;
71 gfc_option.q_kind = gfc_default_double_kind;
76 flag_argument_noalias = 2;
78 gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL
79 | GFC_STD_F2003 | GFC_STD_F95 | GFC_STD_F77 | GFC_STD_GNU;
80 gfc_option.warn_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL
83 gfc_option.warn_nonstd_intrinsics = 0;
89 /* Finalize commandline options. */
92 gfc_post_options (const char **pfilename)
94 const char *filename = *pfilename;
96 /* Verify the input file name. */
97 if (!filename || strcmp (filename, "-") == 0)
102 gfc_option.source = filename;
104 flag_inline_trees = 1;
106 /* Use tree inlining. */
109 if (flag_inline_functions)
110 flag_inline_trees = 2;
112 /* If -pedantic, warn about the use of GNU extensions. */
113 if (pedantic && (gfc_option.allow_std & GFC_STD_GNU) != 0)
114 gfc_option.warn_std |= GFC_STD_GNU;
120 /* Set the options for -Wall. */
126 gfc_option.warn_aliasing = 1;
127 gfc_option.warn_line_truncation = 1;
128 gfc_option.warn_underflow = 1;
129 gfc_option.warn_surprising = 1;
130 gfc_option.warn_unused_labels = 1;
131 gfc_option.warn_nonstd_intrinsics = 1;
134 warn_return_type = 1;
137 /* We save the value of warn_uninitialized, since if they put
138 -Wuninitialized on the command line, we need to generate a
139 warning about not using it without also specifying -O. */
141 if (warn_uninitialized != 1)
142 warn_uninitialized = 2;
147 gfc_handle_module_path_options (const char *arg)
150 if (gfc_option.module_dir != NULL)
152 gfc_status ("gfortran: Only one -M option allowed\n");
158 gfc_status ("gfortran: Directory required after -M\n");
162 gfc_option.module_dir = (char *) gfc_getmem (strlen (arg) + 2);
163 strcpy (gfc_option.module_dir, arg);
164 strcat (gfc_option.module_dir, "/");
167 /* Handle command-line options. Returns 0 if unrecognized, 1 if
168 recognized and handled. */
170 gfc_handle_option (size_t scode, const char *arg, int value)
173 enum opt_code code = (enum opt_code) scode;
175 /* Ignore file names. */
190 gfc_option.warn_aliasing = value;
193 case OPT_Wconversion:
194 gfc_option.warn_conversion = value;
197 case OPT_Wimplicit_interface:
198 gfc_option.warn_implicit_interface = value;
201 case OPT_Wline_truncation:
202 gfc_option.warn_line_truncation = value;
206 gfc_option.warn_underflow = value;
209 case OPT_Wsurprising:
210 gfc_option.warn_surprising = value;
213 case OPT_Wunused_labels:
214 gfc_option.warn_unused_labels = value;
218 gfc_option.flag_dollar_ok = value;
221 case OPT_fdump_parse_tree:
222 gfc_option.verbose = value;
225 case OPT_ffixed_form:
226 gfc_option.source_form = FORM_FIXED;
230 gfc_option.source_form = FORM_FREE;
233 case OPT_funderscoring:
234 gfc_option.flag_underscoring = value;
237 case OPT_fsecond_underscore:
238 gfc_option.flag_second_underscore = value;
241 case OPT_fimplicit_none:
242 gfc_option.flag_implicit_none = value;
245 case OPT_fmax_stack_var_size_:
246 gfc_option.flag_max_stack_var_size = value;
249 case OPT_fmodule_private:
250 gfc_option.flag_module_access_private = value;
253 case OPT_fno_backend:
254 gfc_option.flag_no_backend = value;
257 case OPT_fpack_derived:
258 gfc_option.flag_pack_derived = value;
261 case OPT_frepack_arrays:
262 gfc_option.flag_repack_arrays = value;
265 case OPT_ffixed_line_length_none:
266 gfc_option.fixed_line_length = 0;
269 case OPT_ffixed_line_length_:
270 if (value != 0 && value < 7)
271 gfc_fatal_error ("Fixed line length must be at least seven.");
272 gfc_option.fixed_line_length = value;
275 case OPT_fmax_identifier_length_:
276 if (value > GFC_MAX_SYMBOL_LEN)
277 gfc_fatal_error ("Maximum supported idenitifier length is %d",
279 gfc_option.max_identifier_length = value;
283 if (gfc_validate_kind (BT_REAL, value, true) < 0)
284 gfc_fatal_error ("Argument to -fqkind isn't a valid real kind");
285 gfc_option.q_kind = value;
289 gfc_option.i8 = value;
293 gfc_option.r8 = value;
297 gfc_option.d8 = value;
301 gfc_add_include_path (arg);
306 gfc_handle_module_path_options (arg);
310 gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95 | GFC_STD_F77;
311 gfc_option.warn_std = GFC_STD_F95_OBS;
312 gfc_option.max_identifier_length = 31;
316 gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F77
317 | GFC_STD_F2003 | GFC_STD_F95;
318 gfc_option.warn_std = GFC_STD_F95_OBS;
319 gfc_option.max_identifier_length = 63;
323 gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL
324 | GFC_STD_F77 | GFC_STD_F95 | GFC_STD_F2003
326 gfc_option.warn_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL;
329 case OPT_Wnonstd_intrinsics:
330 gfc_option.warn_nonstd_intrinsics = 1;