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a852e3b1 | 1 | /* CPP Library. |
00059bc7 | 2 | Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
3d7dca39 | 3 | 1999, 2000, 2001 Free Software Foundation, Inc. |
a852e3b1 | 4 | Contributed by Per Bothner, 1994-95. |
5 | Based on CCCP program by Paul Rubin, June 1986 | |
6 | Adapted to ANSI C, Richard Stallman, Jan 1987 | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU General Public License as published by the | |
10 | Free Software Foundation; either version 2, or (at your option) any | |
11 | later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
21 | ||
a852e3b1 | 22 | #include "config.h" |
23 | #include "system.h" | |
6d71dc85 | 24 | #include "cpplib.h" |
25 | #include "cpphash.h" | |
26 | #include "output.h" | |
27 | #include "prefix.h" | |
28 | #include "intl.h" | |
56fc5f02 | 29 | #include "version.h" |
62adb1fe | 30 | #include "mkdeps.h" |
472679ed | 31 | #include "cppdefault.h" |
6d71dc85 | 32 | |
8d1752de | 33 | /* Predefined symbols, built-in macros, and the default include path. */ |
6d71dc85 | 34 | |
35 | #ifndef GET_ENV_PATH_LIST | |
36 | #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0) | |
37 | #endif | |
38 | ||
1e8b9746 | 39 | /* Windows does not natively support inodes, and neither does MSDOS. |
40 | Cygwin's emulation can generate non-unique inodes, so don't use it. | |
41 | VMS has non-numeric inodes. */ | |
42 | #ifdef VMS | |
ca68aa59 | 43 | # define INO_T_EQ(a, b) (!memcmp (&(a), &(b), sizeof (a))) |
1e8b9746 | 44 | #else |
ca68aa59 | 45 | # if (defined _WIN32 && ! defined (_UWIN)) || defined __MSDOS__ |
46 | # define INO_T_EQ(a, b) 0 | |
47 | # else | |
48 | # define INO_T_EQ(a, b) ((a) == (b)) | |
49 | # endif | |
1e8b9746 | 50 | #endif |
51 | ||
8d1752de | 52 | /* Internal structures and prototypes. */ |
6d71dc85 | 53 | |
8d1752de | 54 | /* A `struct pending_option' remembers one -D, -A, -U, -include, or |
55 | -imacros switch. */ | |
d73269b6 | 56 | |
078aa0ff | 57 | typedef void (* cl_directive_handler) PARAMS ((cpp_reader *, const char *)); |
9fa36617 | 58 | struct pending_option |
6d71dc85 | 59 | { |
9fa36617 | 60 | struct pending_option *next; |
8d7a2585 | 61 | const char *arg; |
d73269b6 | 62 | cl_directive_handler handler; |
6d71dc85 | 63 | }; |
9fa36617 | 64 | |
1e8b9746 | 65 | /* The `pending' structure accumulates all the options that are not |
66 | actually processed until we hit cpp_start_read. It consists of | |
67 | several lists, one for each type of option. We keep both head and | |
8d1752de | 68 | tail pointers for quick insertion. */ |
1e8b9746 | 69 | struct cpp_pending |
70 | { | |
d73269b6 | 71 | struct pending_option *directive_head, *directive_tail; |
1e8b9746 | 72 | |
73 | struct file_name_list *quote_head, *quote_tail; | |
74 | struct file_name_list *brack_head, *brack_tail; | |
75 | struct file_name_list *systm_head, *systm_tail; | |
76 | struct file_name_list *after_head, *after_tail; | |
77 | ||
78 | struct pending_option *imacros_head, *imacros_tail; | |
79 | struct pending_option *include_head, *include_tail; | |
80 | }; | |
81 | ||
9fa36617 | 82 | #ifdef __STDC__ |
83 | #define APPEND(pend, list, elt) \ | |
84 | do { if (!(pend)->list##_head) (pend)->list##_head = (elt); \ | |
85 | else (pend)->list##_tail->next = (elt); \ | |
86 | (pend)->list##_tail = (elt); \ | |
87 | } while (0) | |
88 | #else | |
89 | #define APPEND(pend, list, elt) \ | |
90 | do { if (!(pend)->list/**/_head) (pend)->list/**/_head = (elt); \ | |
91 | else (pend)->list/**/_tail->next = (elt); \ | |
92 | (pend)->list/**/_tail = (elt); \ | |
93 | } while (0) | |
94 | #endif | |
6d71dc85 | 95 | |
6d71dc85 | 96 | static void print_help PARAMS ((void)); |
9fa36617 | 97 | static void path_include PARAMS ((cpp_reader *, |
9fa36617 | 98 | char *, int)); |
c77d825d | 99 | static void init_library PARAMS ((void)); |
b3a8144e | 100 | static void init_builtins PARAMS ((cpp_reader *)); |
9fa36617 | 101 | static void append_include_chain PARAMS ((cpp_reader *, |
d2e850c1 | 102 | char *, int, int)); |
d1ad3794 | 103 | struct file_name_list * remove_dup_dir PARAMS ((cpp_reader *, |
104 | struct file_name_list *)); | |
105 | struct file_name_list * remove_dup_dirs PARAMS ((cpp_reader *, | |
106 | struct file_name_list *)); | |
2ff3ad1d | 107 | static void merge_include_chains PARAMS ((cpp_reader *)); |
8d1752de | 108 | static void do_includes PARAMS ((cpp_reader *, |
109 | struct pending_option *, | |
110 | int)); | |
fad0ffbb | 111 | static void set_lang PARAMS ((cpp_reader *, enum c_lang)); |
b3a8144e | 112 | static void init_dependency_output PARAMS ((cpp_reader *)); |
113 | static void init_standard_includes PARAMS ((cpp_reader *)); | |
dfa5c7fa | 114 | static void new_pending_directive PARAMS ((struct cpp_pending *, |
d73269b6 | 115 | const char *, |
116 | cl_directive_handler)); | |
b3a8144e | 117 | static void output_deps PARAMS ((cpp_reader *)); |
bcc40c63 | 118 | static int parse_option PARAMS ((const char *)); |
6d71dc85 | 119 | |
a19b9668 | 120 | /* Fourth argument to append_include_chain: chain to use. |
121 | Note it's never asked to append to the quote chain. */ | |
122 | enum { BRACKET = 0, SYSTEM, AFTER }; | |
6d71dc85 | 123 | |
b3954366 | 124 | /* If we have designated initializers (GCC >2.7) these tables can be |
125 | initialized, constant data. Otherwise, they have to be filled in at | |
e057cf7c | 126 | runtime. */ |
b3954366 | 127 | #if HAVE_DESIGNATED_INITIALIZERS |
5ba37007 | 128 | |
8d1752de | 129 | #define init_trigraph_map() /* Nothing. */ |
b3954366 | 130 | #define TRIGRAPH_MAP \ |
131 | __extension__ const U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = { | |
132 | ||
5ba37007 | 133 | #define END }; |
4f98874d | 134 | #define s(p, v) [p] = v, |
b3954366 | 135 | |
5ba37007 | 136 | #else |
b3954366 | 137 | |
b3954366 | 138 | #define TRIGRAPH_MAP U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = { 0 }; \ |
139 | static void init_trigraph_map PARAMS ((void)) { \ | |
140 | unsigned char *x = _cpp_trigraph_map; | |
141 | ||
2ff3ad1d | 142 | #define END } |
4f98874d | 143 | #define s(p, v) x[p] = v; |
b3954366 | 144 | |
5ba37007 | 145 | #endif |
6d71dc85 | 146 | |
b3954366 | 147 | TRIGRAPH_MAP |
148 | s('=', '#') s(')', ']') s('!', '|') | |
149 | s('(', '[') s('\'', '^') s('>', '}') | |
150 | s('/', '\\') s('<', '{') s('-', '~') | |
151 | END | |
152 | ||
5ba37007 | 153 | #undef s |
4f98874d | 154 | #undef END |
b3954366 | 155 | #undef TRIGRAPH_MAP |
6d71dc85 | 156 | |
157 | /* Given a colon-separated list of file names PATH, | |
158 | add all the names to the search path for include files. */ | |
159 | ||
160 | static void | |
466b3f58 | 161 | path_include (pfile, list, path) |
6d71dc85 | 162 | cpp_reader *pfile; |
9fa36617 | 163 | char *list; |
164 | int path; | |
6d71dc85 | 165 | { |
9fa36617 | 166 | char *p, *q, *name; |
6d71dc85 | 167 | |
9fa36617 | 168 | p = list; |
6d71dc85 | 169 | |
9fa36617 | 170 | do |
171 | { | |
6d71dc85 | 172 | /* Find the end of this name. */ |
9fa36617 | 173 | q = p; |
6d71dc85 | 174 | while (*q != 0 && *q != PATH_SEPARATOR) q++; |
9fa36617 | 175 | if (q == p) |
176 | { | |
177 | /* An empty name in the path stands for the current directory. */ | |
178 | name = (char *) xmalloc (2); | |
179 | name[0] = '.'; | |
180 | name[1] = 0; | |
181 | } | |
182 | else | |
183 | { | |
184 | /* Otherwise use the directory that is named. */ | |
185 | name = (char *) xmalloc (q - p + 1); | |
186 | memcpy (name, p, q - p); | |
187 | name[q - p] = 0; | |
188 | } | |
6d71dc85 | 189 | |
466b3f58 | 190 | append_include_chain (pfile, name, path, 0); |
6d71dc85 | 191 | |
192 | /* Advance past this name. */ | |
9fa36617 | 193 | if (*q == 0) |
6d71dc85 | 194 | break; |
9fa36617 | 195 | p = q + 1; |
196 | } | |
197 | while (1); | |
198 | } | |
199 | ||
9fa36617 | 200 | /* Append DIR to include path PATH. DIR must be permanently allocated |
201 | and writable. */ | |
202 | static void | |
466b3f58 | 203 | append_include_chain (pfile, dir, path, cxx_aware) |
9fa36617 | 204 | cpp_reader *pfile; |
9fa36617 | 205 | char *dir; |
206 | int path; | |
2376a7f7 | 207 | int cxx_aware ATTRIBUTE_UNUSED; |
9fa36617 | 208 | { |
466b3f58 | 209 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
9fa36617 | 210 | struct file_name_list *new; |
211 | struct stat st; | |
212 | unsigned int len; | |
213 | ||
94221a92 | 214 | _cpp_simplify_pathname (dir); |
9fa36617 | 215 | if (stat (dir, &st)) |
216 | { | |
217 | /* Dirs that don't exist are silently ignored. */ | |
218 | if (errno != ENOENT) | |
9e87fa80 | 219 | cpp_notice_from_errno (pfile, dir); |
2ff3ad1d | 220 | else if (CPP_OPTION (pfile, verbose)) |
f80e83a9 | 221 | fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir); |
9fa36617 | 222 | return; |
223 | } | |
224 | ||
225 | if (!S_ISDIR (st.st_mode)) | |
226 | { | |
9e87fa80 | 227 | cpp_notice (pfile, "%s: Not a directory", dir); |
9fa36617 | 228 | return; |
229 | } | |
230 | ||
231 | len = strlen (dir); | |
232 | if (len > pfile->max_include_len) | |
233 | pfile->max_include_len = len; | |
2ff3ad1d | 234 | |
8d7a2585 | 235 | new = (struct file_name_list *) xmalloc (sizeof (struct file_name_list)); |
9fa36617 | 236 | new->name = dir; |
237 | new->nlen = len; | |
238 | new->ino = st.st_ino; | |
239 | new->dev = st.st_dev; | |
d2e850c1 | 240 | if (path == SYSTEM) |
3b44c686 | 241 | #ifdef NO_IMPLICIT_EXTERN_C |
242 | new->sysp = 1; | |
243 | #else | |
d2e850c1 | 244 | new->sysp = cxx_aware ? 1 : 2; |
3b44c686 | 245 | #endif |
d2e850c1 | 246 | else |
247 | new->sysp = 0; | |
9fa36617 | 248 | new->name_map = NULL; |
48f3f15c | 249 | new->next = NULL; |
250 | new->alloc = NULL; | |
9fa36617 | 251 | |
252 | switch (path) | |
253 | { | |
9fa36617 | 254 | case BRACKET: APPEND (pend, brack, new); break; |
255 | case SYSTEM: APPEND (pend, systm, new); break; | |
256 | case AFTER: APPEND (pend, after, new); break; | |
6d71dc85 | 257 | } |
258 | } | |
259 | ||
d1ad3794 | 260 | /* Handle a duplicated include path. PREV is the link in the chain |
261 | before the duplicate. The duplicate is removed from the chain and | |
262 | freed. Returns PREV. */ | |
263 | struct file_name_list * | |
264 | remove_dup_dir (pfile, prev) | |
265 | cpp_reader *pfile; | |
266 | struct file_name_list *prev; | |
267 | { | |
268 | struct file_name_list *cur = prev->next; | |
269 | ||
270 | if (CPP_OPTION (pfile, verbose)) | |
271 | fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name); | |
272 | ||
273 | prev->next = cur->next; | |
274 | free (cur->name); | |
275 | free (cur); | |
276 | ||
277 | return prev; | |
278 | } | |
279 | ||
280 | /* Remove duplicate directories from a chain. Returns the tail of the | |
281 | chain, or NULL if the chain is empty. This algorithm is quadratic | |
282 | in the number of -I switches, which is acceptable since there | |
283 | aren't usually that many of them. */ | |
284 | struct file_name_list * | |
285 | remove_dup_dirs (pfile, head) | |
286 | cpp_reader *pfile; | |
287 | struct file_name_list *head; | |
288 | { | |
289 | struct file_name_list *prev = NULL, *cur, *other; | |
290 | ||
291 | for (cur = head; cur; cur = cur->next) | |
292 | { | |
293 | for (other = head; other != cur; other = other->next) | |
294 | if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev) | |
295 | { | |
296 | cur = remove_dup_dir (pfile, prev); | |
297 | break; | |
298 | } | |
299 | prev = cur; | |
300 | } | |
301 | ||
302 | return prev; | |
303 | } | |
304 | ||
1e8b9746 | 305 | /* Merge the four include chains together in the order quote, bracket, |
306 | system, after. Remove duplicate dirs (as determined by | |
307 | INO_T_EQ()). The system_include and after_include chains are never | |
308 | referred to again after this function; all access is through the | |
309 | bracket_include path. | |
310 | ||
311 | For the future: Check if the directory is empty (but | |
8d1752de | 312 | how?) and possibly preload the include hash. */ |
1e8b9746 | 313 | |
314 | static void | |
2ff3ad1d | 315 | merge_include_chains (pfile) |
316 | cpp_reader *pfile; | |
1e8b9746 | 317 | { |
d1ad3794 | 318 | struct file_name_list *quote, *brack, *systm, *qtail; |
1e8b9746 | 319 | |
2ff3ad1d | 320 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
1e8b9746 | 321 | |
2ff3ad1d | 322 | quote = pend->quote_head; |
323 | brack = pend->brack_head; | |
324 | systm = pend->systm_head; | |
d1ad3794 | 325 | qtail = pend->quote_tail; |
1e8b9746 | 326 | |
d1ad3794 | 327 | /* Paste together bracket, system, and after include chains. */ |
328 | if (systm) | |
329 | pend->systm_tail->next = pend->after_head; | |
1e8b9746 | 330 | else |
d1ad3794 | 331 | systm = pend->after_head; |
332 | ||
333 | if (brack) | |
334 | pend->brack_tail->next = systm; | |
1e8b9746 | 335 | else |
336 | brack = systm; | |
337 | ||
d1ad3794 | 338 | /* This is a bit tricky. First we drop dupes from the quote-include |
339 | list. Then we drop dupes from the bracket-include list. | |
340 | Finally, if qtail and brack are the same directory, we cut out | |
a19b9668 | 341 | brack and move brack up to point to qtail. |
1e8b9746 | 342 | |
343 | We can't just merge the lists and then uniquify them because | |
344 | then we may lose directories from the <> search path that should | |
345 | be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however | |
346 | safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written | |
d1ad3794 | 347 | -Ibar -I- -Ifoo -Iquux. */ |
1e8b9746 | 348 | |
d1ad3794 | 349 | remove_dup_dirs (pfile, brack); |
350 | qtail = remove_dup_dirs (pfile, quote); | |
1e8b9746 | 351 | |
352 | if (quote) | |
353 | { | |
d1ad3794 | 354 | qtail->next = brack; |
355 | ||
356 | /* If brack == qtail, remove brack as it's simpler. */ | |
1e8b9746 | 357 | if (INO_T_EQ (qtail->ino, brack->ino) && qtail->dev == brack->dev) |
d1ad3794 | 358 | brack = remove_dup_dir (pfile, qtail); |
1e8b9746 | 359 | } |
360 | else | |
361 | quote = brack; | |
362 | ||
2ff3ad1d | 363 | CPP_OPTION (pfile, quote_include) = quote; |
364 | CPP_OPTION (pfile, bracket_include) = brack; | |
1e8b9746 | 365 | } |
366 | ||
fad0ffbb | 367 | /* Sets internal flags correctly for a given language, and defines |
368 | macros if necessary. */ | |
369 | static void | |
370 | set_lang (pfile, lang) | |
371 | cpp_reader *pfile; | |
372 | enum c_lang lang; | |
373 | { | |
5db5d057 | 374 | /* Defaults. */ |
375 | CPP_OPTION (pfile, lang) = lang; | |
fad0ffbb | 376 | CPP_OPTION (pfile, objc) = 0; |
377 | CPP_OPTION (pfile, cplusplus) = 0; | |
5db5d057 | 378 | CPP_OPTION (pfile, extended_numbers) = 1; /* Allowed in GNU C and C99. */ |
fad0ffbb | 379 | |
380 | switch (lang) | |
381 | { | |
382 | /* GNU C. */ | |
383 | case CLK_GNUC99: | |
384 | CPP_OPTION (pfile, trigraphs) = 0; | |
385 | CPP_OPTION (pfile, dollars_in_ident) = 1; | |
386 | CPP_OPTION (pfile, cplusplus_comments) = 1; | |
387 | CPP_OPTION (pfile, digraphs) = 1; | |
fad0ffbb | 388 | CPP_OPTION (pfile, c99) = 1; |
fad0ffbb | 389 | break; |
390 | case CLK_GNUC89: | |
391 | CPP_OPTION (pfile, trigraphs) = 0; | |
392 | CPP_OPTION (pfile, dollars_in_ident) = 1; | |
393 | CPP_OPTION (pfile, cplusplus_comments) = 1; | |
394 | CPP_OPTION (pfile, digraphs) = 1; | |
fad0ffbb | 395 | CPP_OPTION (pfile, c99) = 0; |
396 | break; | |
397 | ||
398 | /* ISO C. */ | |
399 | case CLK_STDC94: | |
fad0ffbb | 400 | case CLK_STDC89: |
401 | CPP_OPTION (pfile, trigraphs) = 1; | |
402 | CPP_OPTION (pfile, dollars_in_ident) = 0; | |
403 | CPP_OPTION (pfile, cplusplus_comments) = 0; | |
404 | CPP_OPTION (pfile, digraphs) = lang == CLK_STDC94; | |
fad0ffbb | 405 | CPP_OPTION (pfile, c99) = 0; |
5db5d057 | 406 | CPP_OPTION (pfile, extended_numbers) = 0; |
fad0ffbb | 407 | break; |
408 | case CLK_STDC99: | |
409 | CPP_OPTION (pfile, trigraphs) = 1; | |
410 | CPP_OPTION (pfile, dollars_in_ident) = 0; | |
411 | CPP_OPTION (pfile, cplusplus_comments) = 1; | |
412 | CPP_OPTION (pfile, digraphs) = 1; | |
fad0ffbb | 413 | CPP_OPTION (pfile, c99) = 1; |
fad0ffbb | 414 | break; |
415 | ||
416 | /* Objective C. */ | |
417 | case CLK_OBJCXX: | |
fad0ffbb | 418 | CPP_OPTION (pfile, cplusplus) = 1; |
419 | case CLK_OBJC: | |
420 | CPP_OPTION (pfile, trigraphs) = 0; | |
421 | CPP_OPTION (pfile, dollars_in_ident) = 1; | |
422 | CPP_OPTION (pfile, cplusplus_comments) = 1; | |
423 | CPP_OPTION (pfile, digraphs) = 1; | |
fad0ffbb | 424 | CPP_OPTION (pfile, c99) = 0; |
425 | CPP_OPTION (pfile, objc) = 1; | |
fad0ffbb | 426 | break; |
427 | ||
428 | /* C++. */ | |
429 | case CLK_GNUCXX: | |
430 | case CLK_CXX98: | |
431 | CPP_OPTION (pfile, cplusplus) = 1; | |
432 | CPP_OPTION (pfile, trigraphs) = lang == CLK_CXX98; | |
433 | CPP_OPTION (pfile, dollars_in_ident) = lang == CLK_GNUCXX; | |
434 | CPP_OPTION (pfile, cplusplus_comments) = 1; | |
435 | CPP_OPTION (pfile, digraphs) = 1; | |
fad0ffbb | 436 | CPP_OPTION (pfile, c99) = 0; |
fad0ffbb | 437 | break; |
438 | ||
439 | /* Assembler. */ | |
440 | case CLK_ASM: | |
441 | CPP_OPTION (pfile, trigraphs) = 0; | |
442 | CPP_OPTION (pfile, dollars_in_ident) = 0; /* Maybe not? */ | |
443 | CPP_OPTION (pfile, cplusplus_comments) = 1; | |
444 | CPP_OPTION (pfile, digraphs) = 0; | |
fad0ffbb | 445 | CPP_OPTION (pfile, c99) = 0; |
fad0ffbb | 446 | break; |
447 | } | |
448 | } | |
449 | ||
b3a8144e | 450 | #ifdef HOST_EBCDIC |
451 | static int opt_comp PARAMS ((const void *, const void *)); | |
452 | ||
453 | /* Run-time sorting of options array. */ | |
454 | static int | |
455 | opt_comp (p1, p2) | |
456 | const void *p1, *p2; | |
457 | { | |
458 | return strcmp (((struct cl_option *) p1)->opt_text, | |
459 | ((struct cl_option *) p2)->opt_text); | |
460 | } | |
461 | #endif | |
9751c00e | 462 | |
b3a8144e | 463 | /* init initializes library global state. It might not need to |
464 | do anything depending on the platform and compiler. */ | |
9751c00e | 465 | |
466 | static void | |
c77d825d | 467 | init_library () |
9751c00e | 468 | { |
b3a8144e | 469 | static int initialized = 0; |
470 | ||
471 | if (! initialized) | |
472 | { | |
473 | initialized = 1; | |
474 | ||
9751c00e | 475 | #ifdef HOST_EBCDIC |
b3a8144e | 476 | /* For non-ASCII hosts, the cl_options array needs to be sorted at |
477 | runtime. */ | |
478 | qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp); | |
9751c00e | 479 | #endif |
480 | ||
b3a8144e | 481 | /* Set up the trigraph map. This doesn't need to do anything if |
482 | we were compiled with a compiler that supports C99 designated | |
483 | initializers. */ | |
484 | init_trigraph_map (); | |
485 | } | |
9751c00e | 486 | } |
487 | ||
6d71dc85 | 488 | /* Initialize a cpp_reader structure. */ |
9751c00e | 489 | cpp_reader * |
490 | cpp_create_reader (lang) | |
fad0ffbb | 491 | enum c_lang lang; |
6d71dc85 | 492 | { |
79bd622b | 493 | struct spec_nodes *s; |
b3a8144e | 494 | cpp_reader *pfile; |
79bd622b | 495 | |
9751c00e | 496 | /* Initialise this instance of the library if it hasn't been already. */ |
c77d825d | 497 | init_library (); |
b3a8144e | 498 | |
499 | pfile = (cpp_reader *) xcalloc (1, sizeof (cpp_reader)); | |
79bd622b | 500 | |
eef6c20f | 501 | set_lang (pfile, lang); |
2ff3ad1d | 502 | CPP_OPTION (pfile, warn_import) = 1; |
503 | CPP_OPTION (pfile, discard_comments) = 1; | |
504 | CPP_OPTION (pfile, show_column) = 1; | |
3b304865 | 505 | CPP_OPTION (pfile, tabstop) = 8; |
624a7570 | 506 | CPP_OPTION (pfile, operator_names) = 1; |
2ff3ad1d | 507 | |
508 | CPP_OPTION (pfile, pending) = | |
509 | (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending)); | |
510 | ||
7b4b68f2 | 511 | /* It's simplest to just create this struct whether or not it will |
512 | be needed. */ | |
513 | pfile->deps = deps_init (); | |
514 | ||
8d1752de | 515 | /* Initialize lexer state. */ |
79bd622b | 516 | pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments); |
517 | ||
518 | /* Indicate date and time not yet calculated. */ | |
519 | pfile->date.type = CPP_EOF; | |
520 | ||
521 | /* Initialise the base context. */ | |
522 | pfile->context = &pfile->base_context; | |
523 | pfile->base_context.macro = 0; | |
524 | pfile->base_context.prev = pfile->base_context.next = 0; | |
525 | ||
526 | /* Identifier pool initially 8K. Unaligned, permanent pool. */ | |
527 | _cpp_init_pool (&pfile->ident_pool, 8 * 1024, 1, 0); | |
528 | ||
79bd622b | 529 | /* Argument pool initially 8K. Aligned, temporary pool. */ |
530 | _cpp_init_pool (&pfile->argument_pool, 8 * 1024, 0, 1); | |
531 | ||
532 | /* Macro pool initially 8K. Aligned, permanent pool. */ | |
533 | _cpp_init_pool (&pfile->macro_pool, 8 * 1024, 0, 0); | |
bad6bf53 | 534 | |
79bd622b | 535 | _cpp_init_hashtable (pfile); |
76faa4c0 | 536 | _cpp_init_stacks (pfile); |
f51c2148 | 537 | _cpp_init_includes (pfile); |
6cae2504 | 538 | _cpp_init_internal_pragmas (pfile); |
6d71dc85 | 539 | |
79bd622b | 540 | /* Initialize the special nodes. */ |
541 | s = &pfile->spec_nodes; | |
542 | s->n_L = cpp_lookup (pfile, DSC("L")); | |
543 | s->n_defined = cpp_lookup (pfile, DSC("defined")); | |
2376a7f7 | 544 | s->n_true = cpp_lookup (pfile, DSC("true")); |
545 | s->n_false = cpp_lookup (pfile, DSC("false")); | |
396ffa86 | 546 | s->n__Pragma = cpp_lookup (pfile, DSC("_Pragma")); |
79bd622b | 547 | s->n__STRICT_ANSI__ = cpp_lookup (pfile, DSC("__STRICT_ANSI__")); |
548 | s->n__CHAR_UNSIGNED__ = cpp_lookup (pfile, DSC("__CHAR_UNSIGNED__")); | |
549 | s->n__VA_ARGS__ = cpp_lookup (pfile, DSC("__VA_ARGS__")); | |
550 | s->n__VA_ARGS__->flags |= NODE_DIAGNOSTIC; | |
9751c00e | 551 | |
552 | return pfile; | |
e2f9a79f | 553 | } |
554 | ||
9bd97637 | 555 | /* Free resources used by PFILE. Accessing PFILE after this function |
556 | returns leads to undefined behaviour. */ | |
557 | int | |
558 | cpp_destroy (pfile) | |
6d71dc85 | 559 | cpp_reader *pfile; |
560 | { | |
9bd97637 | 561 | int result; |
79bd622b | 562 | struct file_name_list *dir, *dirn; |
563 | cpp_context *context, *contextn; | |
11d10d3f | 564 | |
5b201908 | 565 | while (CPP_BUFFER (pfile) != NULL) |
6d71dc85 | 566 | cpp_pop_buffer (pfile); |
567 | ||
79bd622b | 568 | if (pfile->macro_buffer) |
8744fb7e | 569 | { |
570 | free ((PTR) pfile->macro_buffer); | |
571 | pfile->macro_buffer = NULL; | |
572 | pfile->macro_buffer_len = 0; | |
573 | } | |
79bd622b | 574 | |
7b4b68f2 | 575 | deps_free (pfile->deps); |
62adb1fe | 576 | |
76faa4c0 | 577 | _cpp_cleanup_includes (pfile); |
f51c2148 | 578 | _cpp_cleanup_stacks (pfile); |
79bd622b | 579 | _cpp_cleanup_hashtable (pfile); |
580 | ||
581 | _cpp_free_lookaheads (pfile); | |
11d10d3f | 582 | |
79bd622b | 583 | _cpp_free_pool (&pfile->ident_pool); |
79bd622b | 584 | _cpp_free_pool (&pfile->macro_pool); |
585 | _cpp_free_pool (&pfile->argument_pool); | |
586 | ||
587 | for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn) | |
11d10d3f | 588 | { |
79bd622b | 589 | dirn = dir->next; |
11d10d3f | 590 | free (dir->name); |
591 | free (dir); | |
592 | } | |
79bd622b | 593 | |
594 | for (context = pfile->base_context.next; context; context = contextn) | |
595 | { | |
596 | contextn = context->next; | |
597 | free (context); | |
598 | } | |
9bd97637 | 599 | |
600 | result = pfile->errors; | |
601 | free (pfile); | |
602 | ||
603 | return result; | |
6d71dc85 | 604 | } |
605 | ||
606 | ||
79bd622b | 607 | /* This structure defines one built-in identifier. A node will be |
608 | entered in the hash table under the name NAME, with value VALUE (if | |
609 | any). If flags has OPERATOR, the node's operator field is used; if | |
31ca26b1 | 610 | flags has BUILTIN the node's builtin field is used. Macros that are |
611 | known at build time should not be flagged BUILTIN, as then they do | |
612 | not appear in macro dumps with e.g. -dM or -dD. | |
31674461 | 613 | |
614 | Two values are not compile time constants, so we tag | |
f80e83a9 | 615 | them in the FLAGS field instead: |
1e67c2e8 | 616 | VERS value is the global version_string, quoted |
617 | ULP value is the global user_label_prefix | |
31674461 | 618 | |
79bd622b | 619 | Also, macros with CPLUS set in the flags field are entered only for C++. */ |
5ba37007 | 620 | |
621 | struct builtin | |
622 | { | |
e057cf7c | 623 | const U_CHAR *name; |
f80e83a9 | 624 | const char *value; |
79bd622b | 625 | unsigned char builtin; |
626 | unsigned char operator; | |
5ba37007 | 627 | unsigned short flags; |
79bd622b | 628 | unsigned short len; |
5ba37007 | 629 | }; |
79bd622b | 630 | #define VERS 0x01 |
631 | #define ULP 0x02 | |
632 | #define CPLUS 0x04 | |
633 | #define BUILTIN 0x08 | |
634 | #define OPERATOR 0x10 | |
635 | ||
636 | #define B(n, t) { U n, 0, t, 0, BUILTIN, sizeof n - 1 } | |
637 | #define C(n, v) { U n, v, 0, 0, 0, sizeof n - 1 } | |
638 | #define X(n, f) { U n, 0, 0, 0, f, sizeof n - 1 } | |
639 | #define O(n, c, f) { U n, 0, 0, c, OPERATOR | f, sizeof n - 1 } | |
5ba37007 | 640 | static const struct builtin builtin_array[] = |
6d71dc85 | 641 | { |
79bd622b | 642 | B("__TIME__", BT_TIME), |
643 | B("__DATE__", BT_DATE), | |
644 | B("__FILE__", BT_FILE), | |
645 | B("__BASE_FILE__", BT_BASE_FILE), | |
646 | B("__LINE__", BT_SPECLINE), | |
647 | B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL), | |
e057cf7c | 648 | |
f80e83a9 | 649 | X("__VERSION__", VERS), |
650 | X("__USER_LABEL_PREFIX__", ULP), | |
e057cf7c | 651 | C("__REGISTER_PREFIX__", REGISTER_PREFIX), |
652 | C("__HAVE_BUILTIN_SETJMP__", "1"), | |
6d71dc85 | 653 | #ifndef NO_BUILTIN_SIZE_TYPE |
e057cf7c | 654 | C("__SIZE_TYPE__", SIZE_TYPE), |
6d71dc85 | 655 | #endif |
656 | #ifndef NO_BUILTIN_PTRDIFF_TYPE | |
e057cf7c | 657 | C("__PTRDIFF_TYPE__", PTRDIFF_TYPE), |
6d71dc85 | 658 | #endif |
7347d500 | 659 | #ifndef NO_BUILTIN_WCHAR_TYPE |
e057cf7c | 660 | C("__WCHAR_TYPE__", WCHAR_TYPE), |
7347d500 | 661 | #endif |
1d3cade7 | 662 | #ifndef NO_BUILTIN_WINT_TYPE |
663 | C("__WINT_TYPE__", WINT_TYPE), | |
664 | #endif | |
31ca26b1 | 665 | #ifdef STDC_0_IN_SYSTEM_HEADERS |
666 | B("__STDC__", BT_STDC), | |
667 | #else | |
668 | C("__STDC__", "1"), | |
669 | #endif | |
31674461 | 670 | |
671 | /* Named operators known to the preprocessor. These cannot be #defined | |
672 | and always have their stated meaning. They are treated like normal | |
79bd622b | 673 | identifiers except for the type code and the meaning. Most of them |
31674461 | 674 | are only for C++ (but see iso646.h). */ |
31674461 | 675 | O("and", CPP_AND_AND, CPLUS), |
676 | O("and_eq", CPP_AND_EQ, CPLUS), | |
677 | O("bitand", CPP_AND, CPLUS), | |
678 | O("bitor", CPP_OR, CPLUS), | |
679 | O("compl", CPP_COMPL, CPLUS), | |
680 | O("not", CPP_NOT, CPLUS), | |
681 | O("not_eq", CPP_NOT_EQ, CPLUS), | |
682 | O("or", CPP_OR_OR, CPLUS), | |
683 | O("or_eq", CPP_OR_EQ, CPLUS), | |
684 | O("xor", CPP_XOR, CPLUS), | |
79bd622b | 685 | O("xor_eq", CPP_XOR_EQ, CPLUS) |
5ba37007 | 686 | }; |
e057cf7c | 687 | #undef B |
688 | #undef C | |
689 | #undef X | |
624a7570 | 690 | #undef O |
1e67c2e8 | 691 | #define builtin_array_end \ |
692 | builtin_array + sizeof(builtin_array)/sizeof(struct builtin) | |
5ba37007 | 693 | |
694 | /* Subroutine of cpp_start_read; reads the builtins table above and | |
695 | enters the macros into the hash table. */ | |
5ba37007 | 696 | static void |
b3a8144e | 697 | init_builtins (pfile) |
5ba37007 | 698 | cpp_reader *pfile; |
699 | { | |
5ba37007 | 700 | const struct builtin *b; |
4e464091 | 701 | |
1e67c2e8 | 702 | for(b = builtin_array; b < builtin_array_end; b++) |
6d71dc85 | 703 | { |
79bd622b | 704 | if ((b->flags & CPLUS) && ! CPP_OPTION (pfile, cplusplus)) |
31674461 | 705 | continue; |
706 | ||
624a7570 | 707 | if ((b->flags & OPERATOR) && ! CPP_OPTION (pfile, operator_names)) |
708 | continue; | |
709 | ||
79bd622b | 710 | if (b->flags & (OPERATOR | BUILTIN)) |
711 | { | |
712 | cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len); | |
713 | if (b->flags & OPERATOR) | |
714 | { | |
715 | hp->flags |= NODE_OPERATOR; | |
716 | hp->value.operator = b->operator; | |
717 | } | |
718 | else | |
719 | { | |
720 | hp->type = NT_MACRO; | |
31ca26b1 | 721 | hp->flags |= NODE_BUILTIN | NODE_WARN; |
79bd622b | 722 | hp->value.builtin = b->builtin; |
723 | } | |
724 | } | |
725 | else /* A standard macro of some kind. */ | |
1e67c2e8 | 726 | { |
f80e83a9 | 727 | const char *val; |
728 | char *str; | |
729 | ||
730 | if (b->flags & VERS) | |
731 | { | |
a336277c | 732 | /* Allocate enough space for 'name "value"\n\0'. */ |
733 | str = alloca (b->len + strlen (version_string) + 5); | |
734 | sprintf (str, "%s \"%s\"\n", b->name, version_string); | |
f80e83a9 | 735 | } |
736 | else | |
737 | { | |
738 | if (b->flags & ULP) | |
4e464091 | 739 | val = CPP_OPTION (pfile, user_label_prefix); |
f80e83a9 | 740 | else |
741 | val = b->value; | |
742 | ||
a336277c | 743 | /* Allocate enough space for "name value\n\0". */ |
744 | str = alloca (b->len + strlen (val) + 3); | |
745 | sprintf(str, "%s %s\n", b->name, val); | |
f80e83a9 | 746 | } |
a622c29d | 747 | |
a336277c | 748 | _cpp_define_builtin (pfile, str); |
1e67c2e8 | 749 | } |
6d71dc85 | 750 | } |
eef6c20f | 751 | |
752 | if (CPP_OPTION (pfile, cplusplus)) | |
31ca26b1 | 753 | { |
754 | _cpp_define_builtin (pfile, "__cplusplus 1"); | |
755 | if (SUPPORTS_ONE_ONLY) | |
756 | _cpp_define_builtin (pfile, "__GXX_WEAK__ 1"); | |
757 | else | |
758 | _cpp_define_builtin (pfile, "__GXX_WEAK__ 0"); | |
759 | } | |
eef6c20f | 760 | if (CPP_OPTION (pfile, objc)) |
761 | _cpp_define_builtin (pfile, "__OBJC__ 1"); | |
762 | ||
763 | if (CPP_OPTION (pfile, lang) == CLK_STDC94) | |
764 | _cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L"); | |
765 | else if (CPP_OPTION (pfile, c99)) | |
766 | _cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L"); | |
767 | ||
768 | if (CPP_OPTION (pfile, lang) == CLK_STDC89 | |
769 | || CPP_OPTION (pfile, lang) == CLK_STDC94 | |
770 | || CPP_OPTION (pfile, lang) == CLK_STDC99) | |
771 | _cpp_define_builtin (pfile, "__STRICT_ANSI__ 1"); | |
772 | else if (CPP_OPTION (pfile, lang) == CLK_ASM) | |
773 | _cpp_define_builtin (pfile, "__ASSEMBLER__ 1"); | |
6d71dc85 | 774 | } |
79bd622b | 775 | #undef BUILTIN |
776 | #undef OPERATOR | |
608a2132 | 777 | #undef VERS |
5ba37007 | 778 | #undef ULP |
79bd622b | 779 | #undef CPLUS |
f80e83a9 | 780 | #undef builtin_array_end |
6d71dc85 | 781 | |
d2e850c1 | 782 | /* And another subroutine. This one sets up the standard include path. */ |
783 | static void | |
b3a8144e | 784 | init_standard_includes (pfile) |
d2e850c1 | 785 | cpp_reader *pfile; |
786 | { | |
d2e850c1 | 787 | char *path; |
4f98874d | 788 | const struct default_include *p; |
2ff3ad1d | 789 | const char *specd_prefix = CPP_OPTION (pfile, include_prefix); |
d2e850c1 | 790 | |
791 | /* Several environment variables may add to the include search path. | |
792 | CPATH specifies an additional list of directories to be searched | |
793 | as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH, | |
794 | etc. specify an additional list of directories to be searched as | |
795 | if specified with -isystem, for the language indicated. */ | |
796 | ||
797 | GET_ENV_PATH_LIST (path, "CPATH"); | |
798 | if (path != 0 && *path != 0) | |
466b3f58 | 799 | path_include (pfile, path, BRACKET); |
d2e850c1 | 800 | |
2ff3ad1d | 801 | switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus)) |
d2e850c1 | 802 | { |
803 | case 0: | |
804 | GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH"); | |
805 | break; | |
806 | case 1: | |
807 | GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH"); | |
808 | break; | |
809 | case 2: | |
810 | GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH"); | |
811 | break; | |
812 | case 3: | |
813 | GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH"); | |
814 | break; | |
815 | } | |
816 | if (path != 0 && *path != 0) | |
466b3f58 | 817 | path_include (pfile, path, SYSTEM); |
d2e850c1 | 818 | |
819 | /* Search "translated" versions of GNU directories. | |
820 | These have /usr/local/lib/gcc... replaced by specd_prefix. */ | |
472679ed | 821 | if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len) |
d2e850c1 | 822 | { |
d2e850c1 | 823 | /* Remove the `include' from /usr/local/lib/gcc.../include. |
824 | GCC_INCLUDE_DIR will always end in /include. */ | |
472679ed | 825 | int default_len = cpp_GCC_INCLUDE_DIR_len; |
826 | char *default_prefix = (char *) alloca (default_len + 1); | |
d2e850c1 | 827 | int specd_len = strlen (specd_prefix); |
828 | ||
472679ed | 829 | memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len); |
d2e850c1 | 830 | default_prefix[default_len] = '\0'; |
831 | ||
472679ed | 832 | for (p = cpp_include_defaults; p->fname; p++) |
d2e850c1 | 833 | { |
834 | /* Some standard dirs are only for C++. */ | |
835 | if (!p->cplusplus | |
2ff3ad1d | 836 | || (CPP_OPTION (pfile, cplusplus) |
837 | && !CPP_OPTION (pfile, no_standard_cplusplus_includes))) | |
d2e850c1 | 838 | { |
839 | /* Does this dir start with the prefix? */ | |
b3954366 | 840 | if (!memcmp (p->fname, default_prefix, default_len)) |
d2e850c1 | 841 | { |
842 | /* Yes; change prefix and add to search list. */ | |
843 | int flen = strlen (p->fname); | |
844 | int this_len = specd_len + flen - default_len; | |
845 | char *str = (char *) xmalloc (this_len + 1); | |
846 | memcpy (str, specd_prefix, specd_len); | |
847 | memcpy (str + specd_len, | |
848 | p->fname + default_len, | |
849 | flen - default_len + 1); | |
850 | ||
466b3f58 | 851 | append_include_chain (pfile, str, SYSTEM, p->cxx_aware); |
d2e850c1 | 852 | } |
853 | } | |
854 | } | |
855 | } | |
856 | ||
857 | /* Search ordinary names for GNU include directories. */ | |
472679ed | 858 | for (p = cpp_include_defaults; p->fname; p++) |
d2e850c1 | 859 | { |
860 | /* Some standard dirs are only for C++. */ | |
861 | if (!p->cplusplus | |
2ff3ad1d | 862 | || (CPP_OPTION (pfile, cplusplus) |
863 | && !CPP_OPTION (pfile, no_standard_cplusplus_includes))) | |
d2e850c1 | 864 | { |
d2e850c1 | 865 | char *str = xstrdup (update_path (p->fname, p->component)); |
466b3f58 | 866 | append_include_chain (pfile, str, SYSTEM, p->cxx_aware); |
d2e850c1 | 867 | } |
868 | } | |
869 | } | |
870 | ||
8d1752de | 871 | /* Handles -imacro and -include from the command line. */ |
872 | static void | |
873 | do_includes (pfile, p, scan) | |
874 | cpp_reader *pfile; | |
875 | struct pending_option *p; | |
876 | int scan; | |
877 | { | |
878 | while (p) | |
879 | { | |
8d1752de | 880 | struct pending_option *q; |
881 | ||
c2acbd5a | 882 | /* Don't handle if -fpreprocessed. Later: maybe update this to |
883 | use the #include "" search path if cpp_read_file fails. */ | |
b543d918 | 884 | if (CPP_OPTION (pfile, preprocessed)) |
c2acbd5a | 885 | cpp_error (pfile, "-include and -imacros cannot be used with -fpreprocessed"); |
886 | else if (_cpp_read_file (pfile, p->arg) && scan) | |
2a5f4561 | 887 | cpp_scan_buffer_nooutput (pfile, 0); |
8d1752de | 888 | q = p->next; |
889 | free (p); | |
890 | p = q; | |
891 | } | |
892 | } | |
893 | ||
c2acbd5a | 894 | /* This is called after options have been processed. Setup for |
7e555f5f | 895 | processing input from the file named FNAME, or stdin if it is the |
896 | empty string. Return 1 on success, 0 on failure. */ | |
6d71dc85 | 897 | int |
79bd622b | 898 | cpp_start_read (pfile, fname) |
6d71dc85 | 899 | cpp_reader *pfile; |
8d7a2585 | 900 | const char *fname; |
6d71dc85 | 901 | { |
9fa36617 | 902 | struct pending_option *p, *q; |
6d71dc85 | 903 | |
d2e850c1 | 904 | /* Set up the include search path now. */ |
2ff3ad1d | 905 | if (! CPP_OPTION (pfile, no_standard_includes)) |
b3a8144e | 906 | init_standard_includes (pfile); |
d2e850c1 | 907 | |
2ff3ad1d | 908 | merge_include_chains (pfile); |
d2e850c1 | 909 | |
910 | /* With -v, print the list of dirs to search. */ | |
2ff3ad1d | 911 | if (CPP_OPTION (pfile, verbose)) |
d2e850c1 | 912 | { |
913 | struct file_name_list *l; | |
914 | fprintf (stderr, _("#include \"...\" search starts here:\n")); | |
2ff3ad1d | 915 | for (l = CPP_OPTION (pfile, quote_include); l; l = l->next) |
d2e850c1 | 916 | { |
2ff3ad1d | 917 | if (l == CPP_OPTION (pfile, bracket_include)) |
d2e850c1 | 918 | fprintf (stderr, _("#include <...> search starts here:\n")); |
919 | fprintf (stderr, " %s\n", l->name); | |
920 | } | |
921 | fprintf (stderr, _("End of search list.\n")); | |
922 | } | |
923 | ||
af808d7d | 924 | if (CPP_OPTION (pfile, print_deps)) |
162804c0 | 925 | /* Set the default target (if there is none already). */ |
7e555f5f | 926 | deps_add_default_target (pfile->deps, fname); |
af808d7d | 927 | |
928 | /* Open the main input file. This must be done early, so we have a | |
929 | buffer to stand on. */ | |
fd944c82 | 930 | if (!_cpp_read_file (pfile, fname)) |
d2e850c1 | 931 | return 0; |
932 | ||
c2acbd5a | 933 | /* If already preprocessed, don't install __LINE__, etc., and ignore |
934 | command line definitions and assertions. Handle -U's, -D's and | |
935 | -A's in the order they were seen. */ | |
936 | if (! CPP_OPTION (pfile, preprocessed)) | |
937 | init_builtins (pfile); | |
6d71dc85 | 938 | |
2ff3ad1d | 939 | p = CPP_OPTION (pfile, pending)->directive_head; |
9fa36617 | 940 | while (p) |
6d71dc85 | 941 | { |
c2acbd5a | 942 | if (! CPP_OPTION (pfile, preprocessed)) |
943 | (*p->handler) (pfile, p->arg); | |
9fa36617 | 944 | q = p->next; |
945 | free (p); | |
946 | p = q; | |
6d71dc85 | 947 | } |
c2acbd5a | 948 | |
2ff3ad1d | 949 | pfile->done_initializing = 1; |
f80e83a9 | 950 | |
6d71dc85 | 951 | /* The -imacros files can be scanned now, but the -include files |
8d1752de | 952 | have to be pushed onto the buffer stack and processed later, |
953 | otherwise cppmain.c won't see the tokens. include_head was built | |
954 | up as a stack, and popping this stack onto the buffer stack means | |
955 | we preserve the order of the command line. */ | |
956 | do_includes (pfile, CPP_OPTION (pfile, pending)->imacros_head, 1); | |
957 | do_includes (pfile, CPP_OPTION (pfile, pending)->include_head, 0); | |
6d71dc85 | 958 | |
2ff3ad1d | 959 | free (CPP_OPTION (pfile, pending)); |
960 | CPP_OPTION (pfile, pending) = NULL; | |
6d71dc85 | 961 | |
962 | return 1; | |
963 | } | |
964 | ||
de2873b7 | 965 | /* Use mkdeps.c to output dependency information. */ |
b3a8144e | 966 | static void |
967 | output_deps (pfile) | |
968 | cpp_reader *pfile; | |
969 | { | |
970 | /* Stream on which to print the dependency information. */ | |
971 | FILE *deps_stream = 0; | |
972 | const char *deps_mode = CPP_OPTION (pfile, print_deps_append) ? "a" : "w"; | |
973 | ||
974 | if (CPP_OPTION (pfile, deps_file) == 0) | |
975 | deps_stream = stdout; | |
976 | else | |
977 | { | |
978 | deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode); | |
979 | if (deps_stream == 0) | |
980 | { | |
981 | cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file)); | |
982 | return; | |
983 | } | |
984 | } | |
985 | ||
986 | deps_write (pfile->deps, deps_stream, 72); | |
987 | ||
988 | if (CPP_OPTION (pfile, deps_phony_targets)) | |
989 | deps_phony_targets (pfile->deps, deps_stream); | |
990 | ||
991 | /* Don't close stdout. */ | |
992 | if (CPP_OPTION (pfile, deps_file)) | |
993 | { | |
994 | if (ferror (deps_stream) || fclose (deps_stream) != 0) | |
995 | cpp_fatal (pfile, "I/O error on output"); | |
996 | } | |
997 | } | |
998 | ||
6d71dc85 | 999 | /* This is called at the end of preprocessing. It pops the |
1000 | last buffer and writes dependency output. It should also | |
1001 | clear macro definitions, such that you could call cpp_start_read | |
8d1752de | 1002 | with a new filename to restart processing. */ |
6d71dc85 | 1003 | void |
79bd622b | 1004 | cpp_finish (pfile) |
6d71dc85 | 1005 | cpp_reader *pfile; |
1006 | { | |
e2f9a79f | 1007 | if (CPP_BUFFER (pfile)) |
1008 | { | |
1009 | cpp_ice (pfile, "buffers still stacked in cpp_finish"); | |
1010 | while (CPP_BUFFER (pfile)) | |
1011 | cpp_pop_buffer (pfile); | |
1012 | } | |
9e87fa80 | 1013 | |
62adb1fe | 1014 | /* Don't write the deps file if preprocessing has failed. */ |
2ff3ad1d | 1015 | if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0) |
b3a8144e | 1016 | output_deps (pfile); |
d453a374 | 1017 | |
34627970 | 1018 | /* Report on headers that could use multiple include guards. */ |
1019 | if (CPP_OPTION (pfile, print_include_names)) | |
f51c2148 | 1020 | _cpp_report_missing_guards (pfile); |
6d71dc85 | 1021 | } |
1022 | ||
dd48bf24 | 1023 | static void |
2ff3ad1d | 1024 | new_pending_directive (pend, text, handler) |
1025 | struct cpp_pending *pend; | |
dd48bf24 | 1026 | const char *text; |
d73269b6 | 1027 | cl_directive_handler handler; |
dd48bf24 | 1028 | { |
1029 | struct pending_option *o = (struct pending_option *) | |
1030 | xmalloc (sizeof (struct pending_option)); | |
1031 | ||
8d7a2585 | 1032 | o->arg = text; |
dd48bf24 | 1033 | o->next = NULL; |
d73269b6 | 1034 | o->handler = handler; |
2ff3ad1d | 1035 | APPEND (pend, directive, o); |
dd48bf24 | 1036 | } |
1037 | ||
2ff3ad1d | 1038 | /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string"); |
1039 | I.e. a const string initializer with parens around it. That is | |
1040 | what N_("string") resolves to, so we make no_* be macros instead. */ | |
1041 | #define no_arg N_("Argument missing after %s") | |
1042 | #define no_ass N_("Assertion missing after %s") | |
1043 | #define no_dir N_("Directory name missing after %s") | |
1044 | #define no_fil N_("File name missing after %s") | |
1045 | #define no_mac N_("Macro name missing after %s") | |
1046 | #define no_pth N_("Path name missing after %s") | |
3b304865 | 1047 | #define no_num N_("Number missing after %s") |
3d7dca39 | 1048 | #define no_tgt N_("Target missing after %s") |
2ff3ad1d | 1049 | |
1050 | /* This is the list of all command line options, with the leading | |
1051 | "-" removed. It must be sorted in ASCII collating order. */ | |
1052 | #define COMMAND_LINE_OPTIONS \ | |
2ff3ad1d | 1053 | DEF_OPT("$", 0, OPT_dollar) \ |
1054 | DEF_OPT("+", 0, OPT_plus) \ | |
1055 | DEF_OPT("-help", 0, OPT__help) \ | |
7a6882ca | 1056 | DEF_OPT("-target-help", 0, OPT_target__help) \ |
2ff3ad1d | 1057 | DEF_OPT("-version", 0, OPT__version) \ |
1058 | DEF_OPT("A", no_ass, OPT_A) \ | |
1059 | DEF_OPT("C", 0, OPT_C) \ | |
1060 | DEF_OPT("D", no_mac, OPT_D) \ | |
1061 | DEF_OPT("H", 0, OPT_H) \ | |
1062 | DEF_OPT("I", no_dir, OPT_I) \ | |
1063 | DEF_OPT("M", 0, OPT_M) \ | |
308f302c | 1064 | DEF_OPT("MD", no_fil, OPT_MD) \ |
af808d7d | 1065 | DEF_OPT("MF", no_fil, OPT_MF) \ |
2ff3ad1d | 1066 | DEF_OPT("MG", 0, OPT_MG) \ |
1067 | DEF_OPT("MM", 0, OPT_MM) \ | |
308f302c | 1068 | DEF_OPT("MMD", no_fil, OPT_MMD) \ |
2e399de6 | 1069 | DEF_OPT("MP", 0, OPT_MP) \ |
7b4b68f2 | 1070 | DEF_OPT("MQ", no_tgt, OPT_MQ) \ |
3d7dca39 | 1071 | DEF_OPT("MT", no_tgt, OPT_MT) \ |
2ff3ad1d | 1072 | DEF_OPT("P", 0, OPT_P) \ |
1073 | DEF_OPT("U", no_mac, OPT_U) \ | |
1074 | DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \ | |
1075 | DEF_OPT("d", no_arg, OPT_d) \ | |
1076 | DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \ | |
1077 | DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \ | |
624a7570 | 1078 | DEF_OPT("fno-operator-names", 0, OPT_fno_operator_names) \ |
2ff3ad1d | 1079 | DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \ |
1080 | DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \ | |
1081 | DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \ | |
1082 | DEF_OPT("fshow-column", 0, OPT_fshow_column) \ | |
3b304865 | 1083 | DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \ |
2ff3ad1d | 1084 | DEF_OPT("h", 0, OPT_h) \ |
1085 | DEF_OPT("idirafter", no_dir, OPT_idirafter) \ | |
1086 | DEF_OPT("imacros", no_fil, OPT_imacros) \ | |
1087 | DEF_OPT("include", no_fil, OPT_include) \ | |
1088 | DEF_OPT("iprefix", no_pth, OPT_iprefix) \ | |
1089 | DEF_OPT("isystem", no_dir, OPT_isystem) \ | |
1090 | DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \ | |
1091 | DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \ | |
1092 | DEF_OPT("lang-asm", 0, OPT_lang_asm) \ | |
1093 | DEF_OPT("lang-c", 0, OPT_lang_c) \ | |
1094 | DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \ | |
1095 | DEF_OPT("lang-c89", 0, OPT_lang_c89) \ | |
2ff3ad1d | 1096 | DEF_OPT("lang-objc", 0, OPT_lang_objc) \ |
1097 | DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \ | |
1098 | DEF_OPT("nostdinc", 0, OPT_nostdinc) \ | |
1099 | DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \ | |
1100 | DEF_OPT("o", no_fil, OPT_o) \ | |
1101 | DEF_OPT("pedantic", 0, OPT_pedantic) \ | |
1102 | DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \ | |
1103 | DEF_OPT("remap", 0, OPT_remap) \ | |
fad0ffbb | 1104 | DEF_OPT("std=c++98", 0, OPT_std_cplusplus98) \ |
2ff3ad1d | 1105 | DEF_OPT("std=c89", 0, OPT_std_c89) \ |
1106 | DEF_OPT("std=c99", 0, OPT_std_c99) \ | |
1107 | DEF_OPT("std=c9x", 0, OPT_std_c9x) \ | |
1108 | DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \ | |
1109 | DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \ | |
1110 | DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \ | |
1111 | DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \ | |
1112 | DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \ | |
1113 | DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \ | |
1114 | DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \ | |
2ff3ad1d | 1115 | DEF_OPT("trigraphs", 0, OPT_trigraphs) \ |
1116 | DEF_OPT("v", 0, OPT_v) \ | |
1353d9f7 | 1117 | DEF_OPT("version", 0, OPT_version) \ |
2ff3ad1d | 1118 | DEF_OPT("w", 0, OPT_w) |
1119 | ||
1120 | #define DEF_OPT(text, msg, code) code, | |
bcc40c63 | 1121 | enum opt_code |
1122 | { | |
2ff3ad1d | 1123 | COMMAND_LINE_OPTIONS |
bcc40c63 | 1124 | N_OPTS |
1125 | }; | |
2ff3ad1d | 1126 | #undef DEF_OPT |
bcc40c63 | 1127 | |
1128 | struct cl_option | |
1129 | { | |
1130 | const char *opt_text; | |
1131 | const char *msg; | |
1132 | size_t opt_len; | |
1133 | enum opt_code opt_code; | |
1134 | }; | |
1135 | ||
2ff3ad1d | 1136 | #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code }, |
bcc40c63 | 1137 | #ifdef HOST_EBCDIC |
1138 | static struct cl_option cl_options[] = | |
1139 | #else | |
1140 | static const struct cl_option cl_options[] = | |
1141 | #endif | |
1142 | { | |
2ff3ad1d | 1143 | COMMAND_LINE_OPTIONS |
bcc40c63 | 1144 | }; |
1145 | #undef DEF_OPT | |
2ff3ad1d | 1146 | #undef COMMAND_LINE_OPTIONS |
bcc40c63 | 1147 | |
1148 | /* Perform a binary search to find which, if any, option the given | |
1149 | command-line matches. Returns its index in the option array, | |
1150 | negative on failure. Complications arise since some options can be | |
1151 | suffixed with an argument, and multiple complete matches can occur, | |
c2acbd5a | 1152 | e.g. -iwithprefix and -iwithprefixbefore. Moreover, we need to |
1153 | accept options beginning with -W that we do not recognise, but not | |
1154 | to swallow any subsequent command line argument; this is handled as | |
1155 | special cases in cpp_handle_option. */ | |
bcc40c63 | 1156 | static int |
1157 | parse_option (input) | |
1158 | const char *input; | |
1159 | { | |
1160 | unsigned int md, mn, mx; | |
1161 | size_t opt_len; | |
1162 | int comp; | |
1163 | ||
1164 | mn = 0; | |
1165 | mx = N_OPTS; | |
1166 | ||
1167 | while (mx > mn) | |
1168 | { | |
1169 | md = (mn + mx) / 2; | |
2ff3ad1d | 1170 | |
bcc40c63 | 1171 | opt_len = cl_options[md].opt_len; |
b3954366 | 1172 | comp = memcmp (input, cl_options[md].opt_text, opt_len); |
2ff3ad1d | 1173 | |
bcc40c63 | 1174 | if (comp > 0) |
1175 | mn = md + 1; | |
1176 | else if (comp < 0) | |
1177 | mx = md; | |
1178 | else | |
1179 | { | |
1180 | if (input[opt_len] == '\0') | |
1181 | return md; | |
1182 | /* We were passed more text. If the option takes an argument, | |
1183 | we may match a later option or we may have been passed the | |
1184 | argument. The longest possible option match succeeds. | |
1185 | If the option takes no arguments we have not matched and | |
8d1752de | 1186 | continue the search (e.g. input="stdc++" match was "stdc"). */ |
bcc40c63 | 1187 | mn = md + 1; |
1188 | if (cl_options[md].msg) | |
1189 | { | |
1190 | /* Scan forwards. If we get an exact match, return it. | |
1191 | Otherwise, return the longest option-accepting match. | |
8d1752de | 1192 | This loops no more than twice with current options. */ |
bcc40c63 | 1193 | mx = md; |
ee6c4e4b | 1194 | for (; mn < (unsigned int) N_OPTS; mn++) |
bcc40c63 | 1195 | { |
1196 | opt_len = cl_options[mn].opt_len; | |
b3954366 | 1197 | if (memcmp (input, cl_options[mn].opt_text, opt_len)) |
bcc40c63 | 1198 | break; |
1199 | if (input[opt_len] == '\0') | |
1200 | return mn; | |
1201 | if (cl_options[mn].msg) | |
1202 | mx = mn; | |
1203 | } | |
1204 | return mx; | |
1205 | } | |
1206 | } | |
1207 | } | |
1208 | ||
1209 | return -1; | |
1210 | } | |
1211 | ||
6d71dc85 | 1212 | /* Handle one command-line option in (argc, argv). |
1213 | Can be called multiple times, to handle multiple sets of options. | |
1214 | Returns number of strings consumed. */ | |
29768226 | 1215 | |
dfa5c7fa | 1216 | int |
1217 | cpp_handle_option (pfile, argc, argv) | |
6d71dc85 | 1218 | cpp_reader *pfile; |
1219 | int argc; | |
1220 | char **argv; | |
1221 | { | |
6d71dc85 | 1222 | int i = 0; |
c4abf88d | 1223 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
6d71dc85 | 1224 | |
7e555f5f | 1225 | /* Interpret "-" or a non-option as a file name. */ |
1226 | if (argv[i][0] != '-' || argv[i][1] == '\0') | |
9fa36617 | 1227 | { |
7e555f5f | 1228 | if (CPP_OPTION (pfile, in_fname) == NULL) |
1229 | CPP_OPTION (pfile, in_fname) = argv[i]; | |
1230 | else if (CPP_OPTION (pfile, out_fname) == NULL) | |
2ff3ad1d | 1231 | CPP_OPTION (pfile, out_fname) = argv[i]; |
9fa36617 | 1232 | else |
7e555f5f | 1233 | cpp_fatal (pfile, "Too many filenames. Type %s --help for usage info", |
1234 | progname); | |
9fa36617 | 1235 | } |
1236 | else | |
bcc40c63 | 1237 | { |
1238 | enum opt_code opt_code; | |
1239 | int opt_index; | |
8d7a2585 | 1240 | const char *arg = 0; |
bcc40c63 | 1241 | |
8d1752de | 1242 | /* Skip over '-'. */ |
bcc40c63 | 1243 | opt_index = parse_option (&argv[i][1]); |
1244 | if (opt_index < 0) | |
1245 | return i; | |
1246 | ||
1247 | opt_code = cl_options[opt_index].opt_code; | |
1248 | if (cl_options[opt_index].msg) | |
1249 | { | |
1250 | arg = &argv[i][cl_options[opt_index].opt_len + 1]; | |
1251 | ||
b60b3a91 | 1252 | /* Yuk. Special case for -W as it must not swallow |
bcc40c63 | 1253 | up any following argument. If this becomes common, add |
8d1752de | 1254 | another field to the cl_options table. */ |
b60b3a91 | 1255 | if (arg[0] == '\0' && opt_code != OPT_W) |
bcc40c63 | 1256 | { |
1257 | arg = argv[++i]; | |
1258 | if (!arg) | |
1259 | { | |
780662e7 | 1260 | cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]); |
bcc40c63 | 1261 | return argc; |
1262 | } | |
1263 | } | |
1264 | } | |
2ff3ad1d | 1265 | |
bcc40c63 | 1266 | switch (opt_code) |
1267 | { | |
8d1752de | 1268 | case N_OPTS: /* Shut GCC up. */ |
bcc40c63 | 1269 | break; |
1270 | case OPT_fleading_underscore: | |
4e464091 | 1271 | CPP_OPTION (pfile, user_label_prefix) = "_"; |
bcc40c63 | 1272 | break; |
1273 | case OPT_fno_leading_underscore: | |
4e464091 | 1274 | CPP_OPTION (pfile, user_label_prefix) = ""; |
bcc40c63 | 1275 | break; |
624a7570 | 1276 | case OPT_fno_operator_names: |
1277 | CPP_OPTION (pfile, operator_names) = 0; | |
1278 | break; | |
bcc40c63 | 1279 | case OPT_fpreprocessed: |
2ff3ad1d | 1280 | CPP_OPTION (pfile, preprocessed) = 1; |
bcc40c63 | 1281 | break; |
1282 | case OPT_fno_preprocessed: | |
2ff3ad1d | 1283 | CPP_OPTION (pfile, preprocessed) = 0; |
1284 | break; | |
1285 | case OPT_fshow_column: | |
1286 | CPP_OPTION (pfile, show_column) = 1; | |
1287 | break; | |
1288 | case OPT_fno_show_column: | |
1289 | CPP_OPTION (pfile, show_column) = 0; | |
bcc40c63 | 1290 | break; |
3b304865 | 1291 | case OPT_ftabstop: |
1292 | /* Silently ignore empty string, non-longs and silly values. */ | |
1293 | if (arg[0] != '\0') | |
1294 | { | |
1295 | char *endptr; | |
1296 | long tabstop = strtol (arg, &endptr, 10); | |
1297 | if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100) | |
1298 | CPP_OPTION (pfile, tabstop) = tabstop; | |
1299 | } | |
1300 | break; | |
bcc40c63 | 1301 | case OPT_w: |
2ff3ad1d | 1302 | CPP_OPTION (pfile, inhibit_warnings) = 1; |
bcc40c63 | 1303 | break; |
bcc40c63 | 1304 | case OPT_h: |
1305 | case OPT__help: | |
1306 | print_help (); | |
72b04ca4 | 1307 | CPP_OPTION (pfile, help_only) = 1; |
bcc40c63 | 1308 | break; |
7a6882ca | 1309 | case OPT_target__help: |
1353d9f7 | 1310 | /* Print if any target specific options. cpplib has none, but |
1311 | make sure help_only gets set. */ | |
72b04ca4 | 1312 | CPP_OPTION (pfile, help_only) = 1; |
7a6882ca | 1313 | break; |
1353d9f7 | 1314 | |
1315 | /* --version inhibits compilation, -version doesn't. -v means | |
1316 | verbose and -version. Historical reasons, don't ask. */ | |
bcc40c63 | 1317 | case OPT__version: |
72b04ca4 | 1318 | CPP_OPTION (pfile, help_only) = 1; |
a19b9668 | 1319 | pfile->print_version = 1; |
1320 | break; | |
1353d9f7 | 1321 | case OPT_v: |
1322 | CPP_OPTION (pfile, verbose) = 1; | |
a19b9668 | 1323 | pfile->print_version = 1; |
1324 | break; | |
1353d9f7 | 1325 | case OPT_version: |
a19b9668 | 1326 | pfile->print_version = 1; |
bcc40c63 | 1327 | break; |
1353d9f7 | 1328 | |
bcc40c63 | 1329 | case OPT_C: |
2ff3ad1d | 1330 | CPP_OPTION (pfile, discard_comments) = 0; |
bcc40c63 | 1331 | break; |
1332 | case OPT_P: | |
2ff3ad1d | 1333 | CPP_OPTION (pfile, no_line_commands) = 1; |
bcc40c63 | 1334 | break; |
8d1752de | 1335 | case OPT_dollar: /* Don't include $ in identifiers. */ |
2ff3ad1d | 1336 | CPP_OPTION (pfile, dollars_in_ident) = 0; |
bcc40c63 | 1337 | break; |
1338 | case OPT_H: | |
2ff3ad1d | 1339 | CPP_OPTION (pfile, print_include_names) = 1; |
bcc40c63 | 1340 | break; |
1341 | case OPT_D: | |
c4abf88d | 1342 | new_pending_directive (pend, arg, cpp_define); |
bcc40c63 | 1343 | break; |
1344 | case OPT_pedantic_errors: | |
2ff3ad1d | 1345 | CPP_OPTION (pfile, pedantic_errors) = 1; |
bcc40c63 | 1346 | /* fall through */ |
1347 | case OPT_pedantic: | |
2ff3ad1d | 1348 | CPP_OPTION (pfile, pedantic) = 1; |
bcc40c63 | 1349 | break; |
bcc40c63 | 1350 | case OPT_trigraphs: |
2ff3ad1d | 1351 | CPP_OPTION (pfile, trigraphs) = 1; |
bcc40c63 | 1352 | break; |
1353 | case OPT_plus: | |
2ff3ad1d | 1354 | CPP_OPTION (pfile, cplusplus) = 1; |
1355 | CPP_OPTION (pfile, cplusplus_comments) = 1; | |
bcc40c63 | 1356 | break; |
1357 | case OPT_remap: | |
2ff3ad1d | 1358 | CPP_OPTION (pfile, remap) = 1; |
bcc40c63 | 1359 | break; |
1360 | case OPT_iprefix: | |
2ff3ad1d | 1361 | CPP_OPTION (pfile, include_prefix) = arg; |
1362 | CPP_OPTION (pfile, include_prefix_len) = strlen (arg); | |
bcc40c63 | 1363 | break; |
1364 | case OPT_lang_c: | |
fad0ffbb | 1365 | set_lang (pfile, CLK_GNUC89); |
bcc40c63 | 1366 | break; |
bcc40c63 | 1367 | case OPT_lang_cplusplus: |
fad0ffbb | 1368 | set_lang (pfile, CLK_GNUCXX); |
bcc40c63 | 1369 | break; |
c4abf88d | 1370 | case OPT_lang_objc: |
fad0ffbb | 1371 | set_lang (pfile, CLK_OBJC); |
bcc40c63 | 1372 | break; |
fad0ffbb | 1373 | case OPT_lang_objcplusplus: |
1374 | set_lang (pfile, CLK_OBJCXX); | |
bcc40c63 | 1375 | break; |
fad0ffbb | 1376 | case OPT_lang_asm: |
1377 | set_lang (pfile, CLK_ASM); | |
bcc40c63 | 1378 | break; |
fad0ffbb | 1379 | case OPT_std_cplusplus98: |
1380 | set_lang (pfile, CLK_CXX98); | |
bcc40c63 | 1381 | break; |
1382 | case OPT_std_gnu89: | |
fad0ffbb | 1383 | set_lang (pfile, CLK_GNUC89); |
bcc40c63 | 1384 | break; |
1385 | case OPT_std_gnu9x: | |
1386 | case OPT_std_gnu99: | |
fad0ffbb | 1387 | set_lang (pfile, CLK_GNUC99); |
bcc40c63 | 1388 | break; |
1389 | case OPT_std_iso9899_199409: | |
fad0ffbb | 1390 | set_lang (pfile, CLK_STDC94); |
1391 | break; | |
bcc40c63 | 1392 | case OPT_std_iso9899_1990: |
1393 | case OPT_std_c89: | |
27fdc0b6 | 1394 | case OPT_lang_c89: |
fad0ffbb | 1395 | set_lang (pfile, CLK_STDC89); |
bcc40c63 | 1396 | break; |
1397 | case OPT_std_iso9899_199x: | |
1398 | case OPT_std_iso9899_1999: | |
1399 | case OPT_std_c9x: | |
1400 | case OPT_std_c99: | |
fad0ffbb | 1401 | set_lang (pfile, CLK_STDC99); |
1402 | break; | |
1403 | case OPT_nostdinc: | |
1404 | /* -nostdinc causes no default include directories. | |
1405 | You must specify all include-file directories with -I. */ | |
1406 | CPP_OPTION (pfile, no_standard_includes) = 1; | |
1407 | break; | |
1408 | case OPT_nostdincplusplus: | |
1409 | /* -nostdinc++ causes no default C++-specific include directories. */ | |
1410 | CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1; | |
bcc40c63 | 1411 | break; |
1412 | case OPT_o: | |
7e555f5f | 1413 | if (CPP_OPTION (pfile, out_fname) == NULL) |
1414 | CPP_OPTION (pfile, out_fname) = arg; | |
1415 | else | |
9fa36617 | 1416 | { |
bcc40c63 | 1417 | cpp_fatal (pfile, "Output filename specified twice"); |
1418 | return argc; | |
1419 | } | |
bcc40c63 | 1420 | break; |
1421 | case OPT_d: | |
1422 | /* Args to -d specify what parts of macros to dump. | |
1423 | Silently ignore unrecognised options; they may | |
8d1752de | 1424 | be aimed at the compiler proper. */ |
bcc40c63 | 1425 | { |
1426 | char c; | |
2ff3ad1d | 1427 | |
bcc40c63 | 1428 | while ((c = *arg++) != '\0') |
1429 | switch (c) | |
1430 | { | |
1431 | case 'M': | |
2ff3ad1d | 1432 | CPP_OPTION (pfile, dump_macros) = dump_only; |
1433 | CPP_OPTION (pfile, no_output) = 1; | |
9fa36617 | 1434 | break; |
1435 | case 'N': | |
2ff3ad1d | 1436 | CPP_OPTION (pfile, dump_macros) = dump_names; |
9fa36617 | 1437 | break; |
1438 | case 'D': | |
2ff3ad1d | 1439 | CPP_OPTION (pfile, dump_macros) = dump_definitions; |
9fa36617 | 1440 | break; |
1441 | case 'I': | |
2ff3ad1d | 1442 | CPP_OPTION (pfile, dump_includes) = 1; |
9fa36617 | 1443 | break; |
1444 | } | |
bcc40c63 | 1445 | } |
1446 | break; | |
af808d7d | 1447 | |
bcc40c63 | 1448 | case OPT_MG: |
2ff3ad1d | 1449 | CPP_OPTION (pfile, print_deps_missing_files) = 1; |
bcc40c63 | 1450 | break; |
1451 | case OPT_M: | |
af808d7d | 1452 | CPP_OPTION (pfile, print_deps) = 2; |
1453 | break; | |
bcc40c63 | 1454 | case OPT_MM: |
af808d7d | 1455 | CPP_OPTION (pfile, print_deps) = 1; |
bcc40c63 | 1456 | break; |
af808d7d | 1457 | case OPT_MF: |
1458 | CPP_OPTION (pfile, deps_file) = arg; | |
1459 | break; | |
1460 | case OPT_MP: | |
2e399de6 | 1461 | CPP_OPTION (pfile, deps_phony_targets) = 1; |
1462 | break; | |
7b4b68f2 | 1463 | case OPT_MQ: |
3d7dca39 | 1464 | case OPT_MT: |
7b4b68f2 | 1465 | /* Add a target. -MQ quotes for Make. */ |
1466 | deps_add_target (pfile->deps, arg, opt_code == OPT_MQ); | |
3d7dca39 | 1467 | break; |
1468 | ||
308f302c | 1469 | /* -MD and -MMD for cpp0 are deprecated and undocumented |
1470 | (use -M or -MM with -MF instead), and probably should be | |
1471 | removed with the next major GCC version. For the moment | |
1472 | we allow these for the benefit of Automake 1.4, which | |
1473 | uses these when dependency tracking is enabled. Automake | |
1474 | 1.5 will fix this. */ | |
1475 | case OPT_MD: | |
1476 | CPP_OPTION (pfile, print_deps) = 2; | |
1477 | CPP_OPTION (pfile, deps_file) = arg; | |
1478 | break; | |
1479 | case OPT_MMD: | |
1480 | CPP_OPTION (pfile, print_deps) = 1; | |
1481 | CPP_OPTION (pfile, deps_file) = arg; | |
1482 | break; | |
1483 | ||
bcc40c63 | 1484 | case OPT_A: |
77ee202d | 1485 | if (arg[0] == '-') |
9fa36617 | 1486 | { |
77ee202d | 1487 | /* -A with an argument beginning with '-' acts as |
1488 | #unassert on whatever immediately follows the '-'. | |
1489 | If "-" is the whole argument, we eliminate all | |
1490 | predefined macros and assertions, including those | |
1491 | that were specified earlier on the command line. | |
1492 | That way we can get rid of any that were passed | |
1493 | automatically in from GCC. */ | |
1494 | ||
1495 | if (arg[1] == '\0') | |
9fa36617 | 1496 | { |
77ee202d | 1497 | struct pending_option *o1, *o2; |
1498 | ||
466b3f58 | 1499 | o1 = pend->directive_head; |
77ee202d | 1500 | while (o1) |
1501 | { | |
1502 | o2 = o1->next; | |
1503 | free (o1); | |
1504 | o1 = o2; | |
1505 | } | |
466b3f58 | 1506 | pend->directive_head = NULL; |
1507 | pend->directive_tail = NULL; | |
9fa36617 | 1508 | } |
77ee202d | 1509 | else |
466b3f58 | 1510 | new_pending_directive (pend, arg + 1, cpp_unassert); |
6d71dc85 | 1511 | } |
77ee202d | 1512 | else |
466b3f58 | 1513 | new_pending_directive (pend, arg, cpp_assert); |
bcc40c63 | 1514 | break; |
1515 | case OPT_U: | |
466b3f58 | 1516 | new_pending_directive (pend, arg, cpp_undef); |
bcc40c63 | 1517 | break; |
1518 | case OPT_I: /* Add directory to path for includes. */ | |
1519 | if (!strcmp (arg, "-")) | |
1520 | { | |
1521 | /* -I- means: | |
1522 | Use the preceding -I directories for #include "..." | |
1523 | but not #include <...>. | |
1524 | Don't search the directory of the present file | |
1525 | for #include "...". (Note that -I. -I- is not the same as | |
1526 | the default setup; -I. uses the compiler's working dir.) */ | |
2ff3ad1d | 1527 | if (! CPP_OPTION (pfile, ignore_srcdir)) |
bcc40c63 | 1528 | { |
2ff3ad1d | 1529 | pend->quote_head = pend->brack_head; |
1530 | pend->quote_tail = pend->brack_tail; | |
1531 | pend->brack_head = 0; | |
1532 | pend->brack_tail = 0; | |
1533 | CPP_OPTION (pfile, ignore_srcdir) = 1; | |
bcc40c63 | 1534 | } |
1535 | else | |
1536 | { | |
1537 | cpp_fatal (pfile, "-I- specified twice"); | |
1538 | return argc; | |
1539 | } | |
1540 | } | |
1541 | else | |
466b3f58 | 1542 | append_include_chain (pfile, xstrdup (arg), BRACKET, 0); |
bcc40c63 | 1543 | break; |
1544 | case OPT_isystem: | |
1545 | /* Add directory to beginning of system include path, as a system | |
8d1752de | 1546 | include directory. */ |
466b3f58 | 1547 | append_include_chain (pfile, xstrdup (arg), SYSTEM, 0); |
bcc40c63 | 1548 | break; |
1549 | case OPT_include: | |
1550 | { | |
1551 | struct pending_option *o = (struct pending_option *) | |
1552 | xmalloc (sizeof (struct pending_option)); | |
1553 | o->arg = arg; | |
1554 | ||
1555 | /* This list has to be built in reverse order so that | |
1556 | when cpp_start_read pushes all the -include files onto | |
1557 | the buffer stack, they will be scanned in forward order. */ | |
466b3f58 | 1558 | o->next = pend->include_head; |
1559 | pend->include_head = o; | |
bcc40c63 | 1560 | } |
1561 | break; | |
1562 | case OPT_imacros: | |
1563 | { | |
1564 | struct pending_option *o = (struct pending_option *) | |
1565 | xmalloc (sizeof (struct pending_option)); | |
1566 | o->arg = arg; | |
1567 | o->next = NULL; | |
2ff3ad1d | 1568 | |
466b3f58 | 1569 | APPEND (pend, imacros, o); |
bcc40c63 | 1570 | } |
1571 | break; | |
1572 | case OPT_iwithprefix: | |
1573 | /* Add directory to end of path for includes, | |
1574 | with the default prefix at the front of its name. */ | |
1575 | /* fall through */ | |
1576 | case OPT_iwithprefixbefore: | |
1577 | /* Add directory to main path for includes, | |
1578 | with the default prefix at the front of its name. */ | |
1579 | { | |
1580 | char *fname; | |
1581 | int len; | |
2ff3ad1d | 1582 | |
bcc40c63 | 1583 | len = strlen (arg); |
2ff3ad1d | 1584 | |
1585 | if (CPP_OPTION (pfile, include_prefix) != 0) | |
bcc40c63 | 1586 | { |
2ff3ad1d | 1587 | size_t ipl = CPP_OPTION (pfile, include_prefix_len); |
1588 | fname = xmalloc (ipl + len + 1); | |
1589 | memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl); | |
1590 | memcpy (fname + ipl, arg, len + 1); | |
bcc40c63 | 1591 | } |
472679ed | 1592 | else if (cpp_GCC_INCLUDE_DIR_len) |
bcc40c63 | 1593 | { |
472679ed | 1594 | fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1); |
1595 | memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len); | |
1596 | memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1); | |
bcc40c63 | 1597 | } |
472679ed | 1598 | else |
1599 | fname = xstrdup (arg); | |
2ff3ad1d | 1600 | |
466b3f58 | 1601 | append_include_chain (pfile, fname, |
bcc40c63 | 1602 | opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0); |
1603 | } | |
1604 | break; | |
1605 | case OPT_idirafter: | |
1606 | /* Add directory to end of path for includes. */ | |
466b3f58 | 1607 | append_include_chain (pfile, xstrdup (arg), AFTER, 0); |
bcc40c63 | 1608 | break; |
1609 | case OPT_W: | |
8d1752de | 1610 | /* Silently ignore unrecognised options. */ |
bcc40c63 | 1611 | if (!strcmp (argv[i], "-Wall")) |
9fa36617 | 1612 | { |
2ff3ad1d | 1613 | CPP_OPTION (pfile, warn_trigraphs) = 1; |
1614 | CPP_OPTION (pfile, warn_comments) = 1; | |
9fa36617 | 1615 | } |
bcc40c63 | 1616 | else if (!strcmp (argv[i], "-Wtraditional")) |
ef33b55c | 1617 | CPP_OPTION (pfile, warn_traditional) = 1; |
bcc40c63 | 1618 | else if (!strcmp (argv[i], "-Wtrigraphs")) |
2ff3ad1d | 1619 | CPP_OPTION (pfile, warn_trigraphs) = 1; |
bcc40c63 | 1620 | else if (!strcmp (argv[i], "-Wcomment")) |
2ff3ad1d | 1621 | CPP_OPTION (pfile, warn_comments) = 1; |
bcc40c63 | 1622 | else if (!strcmp (argv[i], "-Wcomments")) |
2ff3ad1d | 1623 | CPP_OPTION (pfile, warn_comments) = 1; |
bcc40c63 | 1624 | else if (!strcmp (argv[i], "-Wundef")) |
2ff3ad1d | 1625 | CPP_OPTION (pfile, warn_undef) = 1; |
bcc40c63 | 1626 | else if (!strcmp (argv[i], "-Wimport")) |
2ff3ad1d | 1627 | CPP_OPTION (pfile, warn_import) = 1; |
bcc40c63 | 1628 | else if (!strcmp (argv[i], "-Werror")) |
2ff3ad1d | 1629 | CPP_OPTION (pfile, warnings_are_errors) = 1; |
02c09dab | 1630 | else if (!strcmp (argv[i], "-Wsystem-headers")) |
1631 | CPP_OPTION (pfile, warn_system_headers) = 1; | |
bcc40c63 | 1632 | else if (!strcmp (argv[i], "-Wno-traditional")) |
ef33b55c | 1633 | CPP_OPTION (pfile, warn_traditional) = 0; |
bcc40c63 | 1634 | else if (!strcmp (argv[i], "-Wno-trigraphs")) |
2ff3ad1d | 1635 | CPP_OPTION (pfile, warn_trigraphs) = 0; |
bcc40c63 | 1636 | else if (!strcmp (argv[i], "-Wno-comment")) |
2ff3ad1d | 1637 | CPP_OPTION (pfile, warn_comments) = 0; |
bcc40c63 | 1638 | else if (!strcmp (argv[i], "-Wno-comments")) |
2ff3ad1d | 1639 | CPP_OPTION (pfile, warn_comments) = 0; |
bcc40c63 | 1640 | else if (!strcmp (argv[i], "-Wno-undef")) |
2ff3ad1d | 1641 | CPP_OPTION (pfile, warn_undef) = 0; |
bcc40c63 | 1642 | else if (!strcmp (argv[i], "-Wno-import")) |
2ff3ad1d | 1643 | CPP_OPTION (pfile, warn_import) = 0; |
bcc40c63 | 1644 | else if (!strcmp (argv[i], "-Wno-error")) |
2ff3ad1d | 1645 | CPP_OPTION (pfile, warnings_are_errors) = 0; |
02c09dab | 1646 | else if (!strcmp (argv[i], "-Wno-system-headers")) |
1647 | CPP_OPTION (pfile, warn_system_headers) = 0; | |
bcc40c63 | 1648 | break; |
1649 | } | |
1650 | } | |
6d71dc85 | 1651 | return i + 1; |
bcc40c63 | 1652 | } |
9fa36617 | 1653 | |
6d71dc85 | 1654 | /* Handle command-line options in (argc, argv). |
1655 | Can be called multiple times, to handle multiple sets of options. | |
1656 | Returns if an unrecognized option is seen. | |
1657 | Returns number of strings consumed. */ | |
6d71dc85 | 1658 | int |
1659 | cpp_handle_options (pfile, argc, argv) | |
1660 | cpp_reader *pfile; | |
1661 | int argc; | |
1662 | char **argv; | |
1663 | { | |
1664 | int i; | |
1665 | int strings_processed; | |
bcc40c63 | 1666 | |
6d71dc85 | 1667 | for (i = 0; i < argc; i += strings_processed) |
1668 | { | |
dfa5c7fa | 1669 | strings_processed = cpp_handle_option (pfile, argc - i, argv + i); |
6d71dc85 | 1670 | if (strings_processed == 0) |
1671 | break; | |
1672 | } | |
af808d7d | 1673 | |
6d71dc85 | 1674 | return i; |
1675 | } | |
1676 | ||
af808d7d | 1677 | /* Extra processing when all options are parsed, after all calls to |
1678 | cpp_handle_option[s]. Consistency checks etc. */ | |
1679 | void | |
1680 | cpp_post_options (pfile) | |
1681 | cpp_reader *pfile; | |
1682 | { | |
a19b9668 | 1683 | if (pfile->print_version) |
1684 | { | |
1685 | fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string); | |
1686 | #ifdef TARGET_VERSION | |
1687 | TARGET_VERSION; | |
1688 | #endif | |
1689 | fputc ('\n', stderr); | |
1690 | } | |
1691 | ||
7e555f5f | 1692 | /* Canonicalize in_fname and out_fname. We guarantee they are not |
1693 | NULL, and that the empty string represents stdin / stdout. */ | |
1694 | if (CPP_OPTION (pfile, in_fname) == NULL | |
1695 | || !strcmp (CPP_OPTION (pfile, in_fname), "-")) | |
1696 | CPP_OPTION (pfile, in_fname) = ""; | |
1697 | ||
1698 | if (CPP_OPTION (pfile, out_fname) == NULL | |
1699 | || !strcmp (CPP_OPTION (pfile, out_fname), "-")) | |
1700 | CPP_OPTION (pfile, out_fname) = ""; | |
1701 | ||
af808d7d | 1702 | /* -Wtraditional is not useful in C++ mode. */ |
1703 | if (CPP_OPTION (pfile, cplusplus)) | |
1704 | CPP_OPTION (pfile, warn_traditional) = 0; | |
1705 | ||
1706 | /* Set this if it hasn't been set already. */ | |
1707 | if (CPP_OPTION (pfile, user_label_prefix) == NULL) | |
1708 | CPP_OPTION (pfile, user_label_prefix) = USER_LABEL_PREFIX; | |
1709 | ||
1710 | /* We need to do this after option processing and before | |
1711 | cpp_start_read, as cppmain.c relies on the options->no_output to | |
1712 | set its callbacks correctly before calling cpp_start_read. */ | |
1713 | init_dependency_output (pfile); | |
1714 | ||
308f302c | 1715 | /* After checking the environment variables, check if -M or -MM has |
1716 | not been specified, but other -M options have. */ | |
1717 | if (CPP_OPTION (pfile, print_deps) == 0 && | |
1718 | (CPP_OPTION (pfile, print_deps_missing_files) | |
1719 | || CPP_OPTION (pfile, deps_file) | |
1720 | || CPP_OPTION (pfile, deps_phony_targets))) | |
1721 | cpp_fatal (pfile, "you must additionally specify either -M or -MM"); | |
af808d7d | 1722 | } |
1723 | ||
b3a8144e | 1724 | /* Set up dependency-file output. */ |
1725 | static void | |
1726 | init_dependency_output (pfile) | |
1727 | cpp_reader *pfile; | |
1728 | { | |
1729 | char *spec, *s, *output_file; | |
1730 | ||
1731 | /* Either of two environment variables can specify output of deps. | |
1732 | Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET", | |
1733 | where OUTPUT_FILE is the file to write deps info to | |
1734 | and DEPS_TARGET is the target to mention in the deps. */ | |
1735 | ||
1736 | if (CPP_OPTION (pfile, print_deps) == 0) | |
1737 | { | |
1738 | spec = getenv ("DEPENDENCIES_OUTPUT"); | |
1739 | if (spec) | |
1740 | CPP_OPTION (pfile, print_deps) = 1; | |
1741 | else | |
1742 | { | |
1743 | spec = getenv ("SUNPRO_DEPENDENCIES"); | |
1744 | if (spec) | |
1745 | CPP_OPTION (pfile, print_deps) = 2; | |
1746 | else | |
1747 | return; | |
1748 | } | |
1749 | ||
1750 | /* Find the space before the DEPS_TARGET, if there is one. */ | |
1751 | s = strchr (spec, ' '); | |
1752 | if (s) | |
1753 | { | |
1754 | /* Let the caller perform MAKE quoting. */ | |
1755 | deps_add_target (pfile->deps, s + 1, 0); | |
1756 | output_file = (char *) xmalloc (s - spec + 1); | |
1757 | memcpy (output_file, spec, s - spec); | |
1758 | output_file[s - spec] = 0; | |
1759 | } | |
1760 | else | |
1761 | output_file = spec; | |
1762 | ||
af808d7d | 1763 | /* Command line overrides environment variables. */ |
1764 | if (CPP_OPTION (pfile, deps_file) == 0) | |
1765 | CPP_OPTION (pfile, deps_file) = output_file; | |
b3a8144e | 1766 | CPP_OPTION (pfile, print_deps_append) = 1; |
1767 | } | |
1768 | ||
308f302c | 1769 | /* If dependencies go to standard output, or -MG is used, we should |
1770 | suppress output. The user may be requesting other stuff to | |
1771 | stdout, with -dM, -v etc. We let them shoot themselves in the | |
1772 | foot. */ | |
1773 | if (CPP_OPTION (pfile, deps_file) == 0 | |
1774 | || CPP_OPTION (pfile, print_deps_missing_files)) | |
af808d7d | 1775 | CPP_OPTION (pfile, no_output) = 1; |
b3a8144e | 1776 | } |
1777 | ||
6d71dc85 | 1778 | static void |
1779 | print_help () | |
1780 | { | |
9e87fa80 | 1781 | fprintf (stderr, _("Usage: %s [switches] input output\n"), progname); |
6219c3ed | 1782 | /* To keep the lines from getting too long for some compilers, limit |
1783 | to about 500 characters (6 lines) per chunk. */ | |
6d71dc85 | 1784 | fputs (_("\ |
1785 | Switches:\n\ | |
1786 | -include <file> Include the contents of <file> before other files\n\ | |
1787 | -imacros <file> Accept definition of macros in <file>\n\ | |
1788 | -iprefix <path> Specify <path> as a prefix for next two options\n\ | |
1789 | -iwithprefix <dir> Add <dir> to the end of the system include path\n\ | |
1790 | -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\ | |
1791 | -isystem <dir> Add <dir> to the start of the system include path\n\ | |
6219c3ed | 1792 | "), stdout); |
1793 | fputs (_("\ | |
6d71dc85 | 1794 | -idirafter <dir> Add <dir> to the end of the system include path\n\ |
1795 | -I <dir> Add <dir> to the end of the main include path\n\ | |
bcc40c63 | 1796 | -I- Fine-grained include path control; see info docs\n\ |
6d71dc85 | 1797 | -nostdinc Do not search system include directories\n\ |
1798 | (dirs specified with -isystem will still be used)\n\ | |
1799 | -nostdinc++ Do not search system include directories for C++\n\ | |
1800 | -o <file> Put output into <file>\n\ | |
6219c3ed | 1801 | "), stdout); |
1802 | fputs (_("\ | |
f80e83a9 | 1803 | -pedantic Issue all warnings demanded by strict ISO C\n\ |
bcc40c63 | 1804 | -pedantic-errors Issue -pedantic warnings as errors instead\n\ |
f80e83a9 | 1805 | -trigraphs Support ISO C trigraphs\n\ |
6d71dc85 | 1806 | -lang-c Assume that the input sources are in C\n\ |
1807 | -lang-c89 Assume that the input sources are in C89\n\ | |
6219c3ed | 1808 | "), stdout); |
1809 | fputs (_("\ | |
241e762e | 1810 | -lang-c++ Assume that the input sources are in C++\n\ |
6d71dc85 | 1811 | -lang-objc Assume that the input sources are in ObjectiveC\n\ |
1812 | -lang-objc++ Assume that the input sources are in ObjectiveC++\n\ | |
1813 | -lang-asm Assume that the input sources are in assembler\n\ | |
6219c3ed | 1814 | "), stdout); |
1815 | fputs (_("\ | |
6d71dc85 | 1816 | -std=<std name> Specify the conformance standard; one of:\n\ |
4960a83f | 1817 | gnu89, gnu99, c89, c99, iso9899:1990,\n\ |
1818 | iso9899:199409, iso9899:1999\n\ | |
6d71dc85 | 1819 | -+ Allow parsing of C++ style features\n\ |
1820 | -w Inhibit warning messages\n\ | |
1821 | -Wtrigraphs Warn if trigraphs are encountered\n\ | |
1822 | -Wno-trigraphs Do not warn about trigraphs\n\ | |
1823 | -Wcomment{s} Warn if one comment starts inside another\n\ | |
6219c3ed | 1824 | "), stdout); |
1825 | fputs (_("\ | |
6d71dc85 | 1826 | -Wno-comment{s} Do not warn about comments\n\ |
241e762e | 1827 | -Wtraditional Warn about features not present in traditional C\n\ |
1828 | -Wno-traditional Do not warn about traditional C\n\ | |
6d71dc85 | 1829 | -Wundef Warn if an undefined macro is used by #if\n\ |
1830 | -Wno-undef Do not warn about testing undefined macros\n\ | |
1831 | -Wimport Warn about the use of the #import directive\n\ | |
6219c3ed | 1832 | "), stdout); |
1833 | fputs (_("\ | |
6d71dc85 | 1834 | -Wno-import Do not warn about the use of #import\n\ |
1835 | -Werror Treat all warnings as errors\n\ | |
1836 | -Wno-error Do not treat warnings as errors\n\ | |
02c09dab | 1837 | -Wsystem-headers Do not suppress warnings from system headers\n\ |
1838 | -Wno-system-headers Suppress warnings from system headers\n\ | |
6d71dc85 | 1839 | -Wall Enable all preprocessor warnings\n\ |
6219c3ed | 1840 | "), stdout); |
1841 | fputs (_("\ | |
02c09dab | 1842 | -M Generate make dependencies\n\ |
1843 | -MM As -M, but ignore system header files\n\ | |
af808d7d | 1844 | -MF <file> Write dependency output to the given file\n\ |
6d71dc85 | 1845 | -MG Treat missing header file as generated files\n\ |
af808d7d | 1846 | "), stdout); |
1847 | fputs (_("\ | |
1848 | -MP Generate phony targets for all headers\n\ | |
1849 | -MQ <target> Add a MAKE-quoted target\n\ | |
1850 | -MT <target> Add an unquoted target\n\ | |
6219c3ed | 1851 | "), stdout); |
1852 | fputs (_("\ | |
02c09dab | 1853 | -D<macro> Define a <macro> with string '1' as its value\n\ |
1854 | -D<macro>=<val> Define a <macro> with <val> as its value\n\ | |
6d71dc85 | 1855 | -A<question> (<answer>) Assert the <answer> to <question>\n\ |
77ee202d | 1856 | -A-<question> (<answer>) Disable the <answer> to <question>\n\ |
6d71dc85 | 1857 | -U<macro> Undefine <macro> \n\ |
6d71dc85 | 1858 | -v Display the version number\n\ |
6219c3ed | 1859 | "), stdout); |
1860 | fputs (_("\ | |
02c09dab | 1861 | -H Print the name of header files as they are used\n\ |
1862 | -C Do not discard comments\n\ | |
6d71dc85 | 1863 | -dM Display a list of macro definitions active at end\n\ |
1864 | -dD Preserve macro definitions in output\n\ | |
1865 | -dN As -dD except that only the names are preserved\n\ | |
1866 | -dI Include #include directives in the output\n\ | |
02c09dab | 1867 | "), stdout); |
1868 | fputs (_("\ | |
3b304865 | 1869 | -ftabstop=<number> Distance between tab stops for column reporting\n\ |
6d71dc85 | 1870 | -P Do not generate #line directives\n\ |
1871 | -$ Do not allow '$' in identifiers\n\ | |
1872 | -remap Remap file names when including files.\n\ | |
bcc40c63 | 1873 | --version Display version information\n\ |
6d71dc85 | 1874 | -h or --help Display this information\n\ |
1875 | "), stdout); | |
1876 | } |