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6de9cd9a | 1 | /* Parse and display command line options. |
ec378180 | 2 | Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, |
9fc4d79b | 3 | Inc. |
6de9cd9a DN |
4 | Contributed by Andy Vaught |
5 | ||
9fc4d79b | 6 | This file is part of GCC. |
6de9cd9a | 7 | |
9fc4d79b TS |
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 | |
11 | version. | |
6de9cd9a | 12 | |
9fc4d79b TS |
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 | |
16 | for more details. | |
6de9cd9a DN |
17 | |
18 | You should have received a copy of the GNU General Public License | |
9fc4d79b | 19 | along with GCC; see the file COPYING. If not, write to the Free |
ab57747b KC |
20 | Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
6de9cd9a | 22 | |
6de9cd9a DN |
23 | |
24 | #include "config.h" | |
25 | #include "system.h" | |
26 | #include "coretypes.h" | |
27 | #include "tree.h" | |
28 | #include "flags.h" | |
29 | #include "intl.h" | |
30 | #include "opts.h" | |
31 | #include "options.h" | |
32 | #include "tree-inline.h" | |
33 | ||
34 | #include "gfortran.h" | |
35 | ||
36 | gfc_option_t gfc_option; | |
37 | ||
38 | ||
39 | /* Get ready for options handling. */ | |
40 | ||
41 | unsigned int | |
42 | gfc_init_options (unsigned int argc ATTRIBUTE_UNUSED, | |
43 | const char **argv ATTRIBUTE_UNUSED) | |
44 | { | |
6de9cd9a DN |
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; | |
51 | ||
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; | |
2d8b59df | 56 | gfc_option.warn_underflow = 1; |
6de9cd9a DN |
57 | gfc_option.warn_surprising = 0; |
58 | gfc_option.warn_unused_labels = 0; | |
59 | ||
3ae9eb27 SK |
60 | gfc_option.flag_default_double = 0; |
61 | gfc_option.flag_default_integer = 0; | |
62 | gfc_option.flag_default_real = 0; | |
6de9cd9a DN |
63 | gfc_option.flag_dollar_ok = 0; |
64 | gfc_option.flag_underscoring = 1; | |
973ff4c0 TS |
65 | gfc_option.flag_f2c = 0; |
66 | gfc_option.flag_second_underscore = -1; | |
6de9cd9a DN |
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; | |
131c66cd | 73 | gfc_option.flag_backslash = 1; |
6de9cd9a | 74 | |
9d64df18 | 75 | gfc_option.q_kind = gfc_default_double_kind; |
6de9cd9a DN |
76 | |
77 | flag_argument_noalias = 2; | |
61e067cc | 78 | flag_errno_math = 0; |
6de9cd9a DN |
79 | |
80 | gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL | |
c0309c74 RS |
81 | | GFC_STD_F2003 | GFC_STD_F95 | GFC_STD_F77 | GFC_STD_GNU |
82 | | GFC_STD_LEGACY; | |
6de9cd9a | 83 | gfc_option.warn_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL |
c0309c74 | 84 | | GFC_STD_F2003 | GFC_STD_LEGACY; |
6de9cd9a | 85 | |
b7892582 JB |
86 | gfc_option.warn_nonstd_intrinsics = 0; |
87 | ||
6de9cd9a DN |
88 | return CL_F95; |
89 | } | |
90 | ||
91 | ||
92 | /* Finalize commandline options. */ | |
93 | ||
94 | bool | |
95 | gfc_post_options (const char **pfilename) | |
96 | { | |
97 | const char *filename = *pfilename; | |
98 | ||
99 | /* Verify the input file name. */ | |
100 | if (!filename || strcmp (filename, "-") == 0) | |
101 | { | |
102 | filename = ""; | |
103 | } | |
104 | ||
105 | gfc_option.source = filename; | |
106 | ||
107 | flag_inline_trees = 1; | |
108 | ||
109 | /* Use tree inlining. */ | |
110 | if (!flag_no_inline) | |
111 | flag_no_inline = 1; | |
112 | if (flag_inline_functions) | |
39afeb1a | 113 | flag_inline_trees = 2; |
fc2d8429 RS |
114 | |
115 | /* If -pedantic, warn about the use of GNU extensions. */ | |
116 | if (pedantic && (gfc_option.allow_std & GFC_STD_GNU) != 0) | |
117 | gfc_option.warn_std |= GFC_STD_GNU; | |
c0309c74 RS |
118 | /* -std=legacy -pedantic is effectively -std=gnu. */ |
119 | if (pedantic && (gfc_option.allow_std & GFC_STD_LEGACY) != 0) | |
120 | gfc_option.warn_std |= GFC_STD_F95_OBS | GFC_STD_F95_DEL | GFC_STD_LEGACY; | |
fc2d8429 | 121 | |
973ff4c0 TS |
122 | /* If the user didn't explicitly specify -f(no)-second-underscore we |
123 | use it if we're trying to be compatible with f2c, and not | |
124 | otherwise. */ | |
125 | if (gfc_option.flag_second_underscore == -1) | |
126 | gfc_option.flag_second_underscore = gfc_option.flag_f2c; | |
127 | ||
6de9cd9a DN |
128 | return false; |
129 | } | |
130 | ||
131 | ||
132 | /* Set the options for -Wall. */ | |
133 | ||
134 | static void | |
135 | set_Wall (void) | |
136 | { | |
137 | ||
138 | gfc_option.warn_aliasing = 1; | |
139 | gfc_option.warn_line_truncation = 1; | |
2d8b59df | 140 | gfc_option.warn_underflow = 1; |
6de9cd9a DN |
141 | gfc_option.warn_surprising = 1; |
142 | gfc_option.warn_unused_labels = 1; | |
b7892582 | 143 | gfc_option.warn_nonstd_intrinsics = 1; |
6de9cd9a DN |
144 | |
145 | set_Wunused (1); | |
146 | warn_return_type = 1; | |
147 | warn_switch = 1; | |
148 | ||
149 | /* We save the value of warn_uninitialized, since if they put | |
150 | -Wuninitialized on the command line, we need to generate a | |
151 | warning about not using it without also specifying -O. */ | |
152 | ||
153 | if (warn_uninitialized != 1) | |
154 | warn_uninitialized = 2; | |
155 | } | |
156 | ||
157 | ||
158 | static void | |
159 | gfc_handle_module_path_options (const char *arg) | |
160 | { | |
161 | ||
162 | if (gfc_option.module_dir != NULL) | |
163 | { | |
164 | gfc_status ("gfortran: Only one -M option allowed\n"); | |
165 | exit (3); | |
166 | } | |
167 | ||
168 | if (arg == NULL) | |
169 | { | |
170 | gfc_status ("gfortran: Directory required after -M\n"); | |
171 | exit (3); | |
172 | } | |
173 | ||
629ceb93 | 174 | gfc_option.module_dir = (char *) gfc_getmem (strlen (arg) + 2); |
6de9cd9a DN |
175 | strcpy (gfc_option.module_dir, arg); |
176 | strcat (gfc_option.module_dir, "/"); | |
177 | } | |
178 | ||
179 | /* Handle command-line options. Returns 0 if unrecognized, 1 if | |
180 | recognized and handled. */ | |
181 | int | |
182 | gfc_handle_option (size_t scode, const char *arg, int value) | |
183 | { | |
184 | int result = 1; | |
185 | enum opt_code code = (enum opt_code) scode; | |
186 | ||
187 | /* Ignore file names. */ | |
188 | if (code == N_OPTS) | |
189 | return 1; | |
190 | ||
191 | switch (code) | |
192 | { | |
193 | default: | |
194 | result = 0; | |
195 | break; | |
196 | ||
197 | case OPT_Wall: | |
198 | set_Wall (); | |
199 | break; | |
200 | ||
201 | case OPT_Waliasing: | |
202 | gfc_option.warn_aliasing = value; | |
203 | break; | |
204 | ||
205 | case OPT_Wconversion: | |
206 | gfc_option.warn_conversion = value; | |
207 | break; | |
208 | ||
209 | case OPT_Wimplicit_interface: | |
210 | gfc_option.warn_implicit_interface = value; | |
211 | break; | |
212 | ||
213 | case OPT_Wline_truncation: | |
214 | gfc_option.warn_line_truncation = value; | |
215 | break; | |
216 | ||
2d8b59df SK |
217 | case OPT_Wunderflow: |
218 | gfc_option.warn_underflow = value; | |
219 | break; | |
220 | ||
6de9cd9a DN |
221 | case OPT_Wsurprising: |
222 | gfc_option.warn_surprising = value; | |
223 | break; | |
224 | ||
225 | case OPT_Wunused_labels: | |
226 | gfc_option.warn_unused_labels = value; | |
227 | break; | |
228 | ||
973ff4c0 TS |
229 | case OPT_ff2c: |
230 | gfc_option.flag_f2c = value; | |
231 | break; | |
232 | ||
6de9cd9a DN |
233 | case OPT_fdollar_ok: |
234 | gfc_option.flag_dollar_ok = value; | |
235 | break; | |
236 | ||
131c66cd FXC |
237 | case OPT_fbackslash: |
238 | gfc_option.flag_backslash = value; | |
239 | break; | |
240 | ||
6de9cd9a DN |
241 | case OPT_fdump_parse_tree: |
242 | gfc_option.verbose = value; | |
243 | break; | |
244 | ||
245 | case OPT_ffixed_form: | |
246 | gfc_option.source_form = FORM_FIXED; | |
247 | break; | |
248 | ||
249 | case OPT_ffree_form: | |
250 | gfc_option.source_form = FORM_FREE; | |
251 | break; | |
252 | ||
253 | case OPT_funderscoring: | |
254 | gfc_option.flag_underscoring = value; | |
255 | break; | |
256 | ||
257 | case OPT_fsecond_underscore: | |
258 | gfc_option.flag_second_underscore = value; | |
259 | break; | |
260 | ||
261 | case OPT_fimplicit_none: | |
262 | gfc_option.flag_implicit_none = value; | |
263 | break; | |
264 | ||
265 | case OPT_fmax_stack_var_size_: | |
266 | gfc_option.flag_max_stack_var_size = value; | |
267 | break; | |
268 | ||
269 | case OPT_fmodule_private: | |
270 | gfc_option.flag_module_access_private = value; | |
271 | break; | |
272 | ||
273 | case OPT_fno_backend: | |
274 | gfc_option.flag_no_backend = value; | |
275 | break; | |
276 | ||
277 | case OPT_fpack_derived: | |
278 | gfc_option.flag_pack_derived = value; | |
279 | break; | |
280 | ||
281 | case OPT_frepack_arrays: | |
282 | gfc_option.flag_repack_arrays = value; | |
283 | break; | |
284 | ||
f56c5d5d TS |
285 | case OPT_ffixed_line_length_none: |
286 | gfc_option.fixed_line_length = 0; | |
6de9cd9a DN |
287 | break; |
288 | ||
f56c5d5d TS |
289 | case OPT_ffixed_line_length_: |
290 | if (value != 0 && value < 7) | |
291 | gfc_fatal_error ("Fixed line length must be at least seven."); | |
292 | gfc_option.fixed_line_length = value; | |
6de9cd9a DN |
293 | break; |
294 | ||
295 | case OPT_fmax_identifier_length_: | |
296 | if (value > GFC_MAX_SYMBOL_LEN) | |
297 | gfc_fatal_error ("Maximum supported idenitifier length is %d", | |
298 | GFC_MAX_SYMBOL_LEN); | |
299 | gfc_option.max_identifier_length = value; | |
300 | break; | |
301 | ||
302 | case OPT_qkind_: | |
e7a2d5fb | 303 | if (gfc_validate_kind (BT_REAL, value, true) < 0) |
6de9cd9a DN |
304 | gfc_fatal_error ("Argument to -fqkind isn't a valid real kind"); |
305 | gfc_option.q_kind = value; | |
306 | break; | |
307 | ||
3ae9eb27 SK |
308 | case OPT_fdefault_integer_8: |
309 | gfc_option.flag_default_integer = value; | |
6de9cd9a DN |
310 | break; |
311 | ||
3ae9eb27 SK |
312 | case OPT_fdefault_real_8: |
313 | gfc_option.flag_default_real = value; | |
6de9cd9a DN |
314 | break; |
315 | ||
3ae9eb27 SK |
316 | case OPT_fdefault_double_8: |
317 | gfc_option.flag_default_double = value; | |
6de9cd9a DN |
318 | break; |
319 | ||
320 | case OPT_I: | |
321 | gfc_add_include_path (arg); | |
322 | break; | |
323 | ||
324 | case OPT_J: | |
325 | case OPT_M: | |
326 | gfc_handle_module_path_options (arg); | |
2d0b4bcd | 327 | break; |
6de9cd9a DN |
328 | |
329 | case OPT_std_f95: | |
b7892582 | 330 | gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95 | GFC_STD_F77; |
6de9cd9a DN |
331 | gfc_option.warn_std = GFC_STD_F95_OBS; |
332 | gfc_option.max_identifier_length = 31; | |
333 | break; | |
334 | ||
335 | case OPT_std_f2003: | |
b7892582 JB |
336 | gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F77 |
337 | | GFC_STD_F2003 | GFC_STD_F95; | |
338 | gfc_option.warn_std = GFC_STD_F95_OBS; | |
6de9cd9a DN |
339 | gfc_option.max_identifier_length = 63; |
340 | break; | |
341 | ||
342 | case OPT_std_gnu: | |
343 | gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL | |
b7892582 | 344 | | GFC_STD_F77 | GFC_STD_F95 | GFC_STD_F2003 |
c0309c74 RS |
345 | | GFC_STD_GNU | GFC_STD_LEGACY; |
346 | gfc_option.warn_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL | |
347 | | GFC_STD_LEGACY; | |
348 | break; | |
349 | ||
350 | case OPT_std_legacy: | |
351 | gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL | |
352 | | GFC_STD_F77 | GFC_STD_F95 | GFC_STD_F2003 | |
353 | | GFC_STD_GNU | GFC_STD_LEGACY; | |
354 | gfc_option.warn_std = 0; | |
b7892582 JB |
355 | break; |
356 | ||
357 | case OPT_Wnonstd_intrinsics: | |
358 | gfc_option.warn_nonstd_intrinsics = 1; | |
6de9cd9a DN |
359 | break; |
360 | } | |
361 | ||
362 | return result; | |
363 | } |