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5538ada6 | 1 | /* CPP Library. |
5e7b4e25 | 2 | Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
03b9ab42 | 3 | 1999, 2000, 2001 Free Software Foundation, Inc. |
5538ada6 ZW |
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 | ||
5538ada6 ZW |
22 | #include "config.h" |
23 | #include "system.h" | |
6de1e2a9 ZW |
24 | #include "cpplib.h" |
25 | #include "cpphash.h" | |
26 | #include "output.h" | |
27 | #include "prefix.h" | |
28 | #include "intl.h" | |
9f8f4efe | 29 | #include "version.h" |
49e6c08e | 30 | #include "mkdeps.h" |
60893f43 | 31 | #include "cppdefault.h" |
6de1e2a9 | 32 | |
4a58aab6 | 33 | /* Predefined symbols, built-in macros, and the default include path. */ |
6de1e2a9 ZW |
34 | |
35 | #ifndef GET_ENV_PATH_LIST | |
36 | #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0) | |
37 | #endif | |
38 | ||
88ae23e7 ZW |
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. | |
ec5c56db | 41 | VMS has non-numeric inodes. */ |
88ae23e7 | 42 | #ifdef VMS |
3943e756 | 43 | # define INO_T_EQ(a, b) (!memcmp (&(a), &(b), sizeof (a))) |
88ae23e7 | 44 | #else |
3943e756 MS |
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 | |
88ae23e7 ZW |
50 | #endif |
51 | ||
4a58aab6 | 52 | /* Internal structures and prototypes. */ |
6de1e2a9 | 53 | |
4a58aab6 NB |
54 | /* A `struct pending_option' remembers one -D, -A, -U, -include, or |
55 | -imacros switch. */ | |
40eac643 | 56 | |
8be1ddca | 57 | typedef void (* cl_directive_handler) PARAMS ((cpp_reader *, const char *)); |
0b22d65c | 58 | struct pending_option |
6de1e2a9 | 59 | { |
0b22d65c | 60 | struct pending_option *next; |
7ceb3598 | 61 | const char *arg; |
40eac643 | 62 | cl_directive_handler handler; |
6de1e2a9 | 63 | }; |
0b22d65c | 64 | |
88ae23e7 ZW |
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 | |
4a58aab6 | 68 | tail pointers for quick insertion. */ |
88ae23e7 ZW |
69 | struct cpp_pending |
70 | { | |
40eac643 | 71 | struct pending_option *directive_head, *directive_tail; |
88ae23e7 | 72 | |
591e15a1 NB |
73 | struct search_path *quote_head, *quote_tail; |
74 | struct search_path *brack_head, *brack_tail; | |
75 | struct search_path *systm_head, *systm_tail; | |
76 | struct search_path *after_head, *after_tail; | |
88ae23e7 ZW |
77 | |
78 | struct pending_option *imacros_head, *imacros_tail; | |
79 | struct pending_option *include_head, *include_tail; | |
80 | }; | |
81 | ||
0b22d65c ZW |
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 | |
6de1e2a9 | 95 | |
6de1e2a9 | 96 | static void print_help PARAMS ((void)); |
0b22d65c | 97 | static void path_include PARAMS ((cpp_reader *, |
0b22d65c | 98 | char *, int)); |
674c3b40 | 99 | static void init_library PARAMS ((void)); |
7ca3d2b1 | 100 | static void init_builtins PARAMS ((cpp_reader *)); |
0b22d65c | 101 | static void append_include_chain PARAMS ((cpp_reader *, |
c45da1ca | 102 | char *, int, int)); |
002ee64f | 103 | static struct search_path * remove_dup_dir PARAMS ((cpp_reader *, |
591e15a1 | 104 | struct search_path *)); |
002ee64f | 105 | static struct search_path * remove_dup_dirs PARAMS ((cpp_reader *, |
591e15a1 | 106 | struct search_path *)); |
ae79697b | 107 | static void merge_include_chains PARAMS ((cpp_reader *)); |
d7bc7a98 NB |
108 | static bool push_include PARAMS ((cpp_reader *, |
109 | struct pending_option *)); | |
110 | static void free_chain PARAMS ((struct pending_option *)); | |
dd07b884 | 111 | static void set_lang PARAMS ((cpp_reader *, enum c_lang)); |
7ca3d2b1 NB |
112 | static void init_dependency_output PARAMS ((cpp_reader *)); |
113 | static void init_standard_includes PARAMS ((cpp_reader *)); | |
2c0accc9 | 114 | static void new_pending_directive PARAMS ((struct cpp_pending *, |
40eac643 NB |
115 | const char *, |
116 | cl_directive_handler)); | |
7ca3d2b1 | 117 | static void output_deps PARAMS ((cpp_reader *)); |
e23c0ba3 | 118 | static int parse_option PARAMS ((const char *)); |
6de1e2a9 | 119 | |
cb773845 ZW |
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 }; | |
6de1e2a9 | 123 | |
61d0346d NB |
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 | |
12cf91fe | 126 | runtime. */ |
61d0346d | 127 | #if HAVE_DESIGNATED_INITIALIZERS |
a9ae4483 | 128 | |
4a58aab6 | 129 | #define init_trigraph_map() /* Nothing. */ |
61d0346d NB |
130 | #define TRIGRAPH_MAP \ |
131 | __extension__ const U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = { | |
132 | ||
a9ae4483 | 133 | #define END }; |
455d2586 | 134 | #define s(p, v) [p] = v, |
61d0346d | 135 | |
a9ae4483 | 136 | #else |
61d0346d | 137 | |
61d0346d NB |
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 | ||
ae79697b | 142 | #define END } |
455d2586 | 143 | #define s(p, v) x[p] = v; |
61d0346d | 144 | |
a9ae4483 | 145 | #endif |
6de1e2a9 | 146 | |
61d0346d NB |
147 | TRIGRAPH_MAP |
148 | s('=', '#') s(')', ']') s('!', '|') | |
149 | s('(', '[') s('\'', '^') s('>', '}') | |
150 | s('/', '\\') s('<', '{') s('-', '~') | |
151 | END | |
152 | ||
a9ae4483 | 153 | #undef s |
455d2586 | 154 | #undef END |
61d0346d | 155 | #undef TRIGRAPH_MAP |
6de1e2a9 ZW |
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 | |
e33f6253 | 161 | path_include (pfile, list, path) |
6de1e2a9 | 162 | cpp_reader *pfile; |
0b22d65c ZW |
163 | char *list; |
164 | int path; | |
6de1e2a9 | 165 | { |
0b22d65c | 166 | char *p, *q, *name; |
6de1e2a9 | 167 | |
0b22d65c | 168 | p = list; |
6de1e2a9 | 169 | |
0b22d65c ZW |
170 | do |
171 | { | |
6de1e2a9 | 172 | /* Find the end of this name. */ |
0b22d65c | 173 | q = p; |
6de1e2a9 | 174 | while (*q != 0 && *q != PATH_SEPARATOR) q++; |
0b22d65c ZW |
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 | } | |
6de1e2a9 | 189 | |
e33f6253 | 190 | append_include_chain (pfile, name, path, 0); |
6de1e2a9 ZW |
191 | |
192 | /* Advance past this name. */ | |
0b22d65c | 193 | if (*q == 0) |
6de1e2a9 | 194 | break; |
0b22d65c ZW |
195 | p = q + 1; |
196 | } | |
197 | while (1); | |
198 | } | |
199 | ||
bef985f3 NB |
200 | /* Append DIR to include path PATH. DIR must be allocated on the |
201 | heap; this routine takes responsibility for freeing it. */ | |
0b22d65c | 202 | static void |
e33f6253 | 203 | append_include_chain (pfile, dir, path, cxx_aware) |
0b22d65c | 204 | cpp_reader *pfile; |
0b22d65c ZW |
205 | char *dir; |
206 | int path; | |
7d4918a2 | 207 | int cxx_aware ATTRIBUTE_UNUSED; |
0b22d65c | 208 | { |
e33f6253 | 209 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
591e15a1 | 210 | struct search_path *new; |
0b22d65c ZW |
211 | struct stat st; |
212 | unsigned int len; | |
213 | ||
f9200da2 | 214 | if (*dir == '\0') |
bef985f3 NB |
215 | { |
216 | free (dir); | |
217 | dir = xstrdup ("."); | |
218 | } | |
b0699dad | 219 | _cpp_simplify_pathname (dir); |
bef985f3 | 220 | |
0b22d65c ZW |
221 | if (stat (dir, &st)) |
222 | { | |
f9200da2 | 223 | /* Dirs that don't exist are silently ignored. */ |
0b22d65c | 224 | if (errno != ENOENT) |
c1212d2f | 225 | cpp_notice_from_errno (pfile, dir); |
ae79697b | 226 | else if (CPP_OPTION (pfile, verbose)) |
041c3194 | 227 | fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir); |
bef985f3 | 228 | free (dir); |
0b22d65c ZW |
229 | return; |
230 | } | |
231 | ||
232 | if (!S_ISDIR (st.st_mode)) | |
233 | { | |
c1212d2f | 234 | cpp_notice (pfile, "%s: Not a directory", dir); |
bef985f3 | 235 | free (dir); |
0b22d65c ZW |
236 | return; |
237 | } | |
238 | ||
239 | len = strlen (dir); | |
240 | if (len > pfile->max_include_len) | |
241 | pfile->max_include_len = len; | |
ae79697b | 242 | |
591e15a1 | 243 | new = (struct search_path *) xmalloc (sizeof (struct search_path)); |
0b22d65c | 244 | new->name = dir; |
591e15a1 | 245 | new->len = len; |
0b22d65c ZW |
246 | new->ino = st.st_ino; |
247 | new->dev = st.st_dev; | |
4737b274 CF |
248 | /* Both systm and after include file lists should be treated as system |
249 | include files since these two lists are really just a concatenation | |
ec5c56db | 250 | of one "system" list. */ |
4737b274 | 251 | if (path == SYSTEM || path == AFTER) |
52b357ea JJ |
252 | #ifdef NO_IMPLICIT_EXTERN_C |
253 | new->sysp = 1; | |
254 | #else | |
c45da1ca | 255 | new->sysp = cxx_aware ? 1 : 2; |
52b357ea | 256 | #endif |
c45da1ca ZW |
257 | else |
258 | new->sysp = 0; | |
0b22d65c | 259 | new->name_map = NULL; |
503cb436 | 260 | new->next = NULL; |
0b22d65c ZW |
261 | |
262 | switch (path) | |
263 | { | |
0b22d65c ZW |
264 | case BRACKET: APPEND (pend, brack, new); break; |
265 | case SYSTEM: APPEND (pend, systm, new); break; | |
266 | case AFTER: APPEND (pend, after, new); break; | |
6de1e2a9 ZW |
267 | } |
268 | } | |
269 | ||
dd69c71b NB |
270 | /* Handle a duplicated include path. PREV is the link in the chain |
271 | before the duplicate. The duplicate is removed from the chain and | |
272 | freed. Returns PREV. */ | |
002ee64f | 273 | static struct search_path * |
dd69c71b NB |
274 | remove_dup_dir (pfile, prev) |
275 | cpp_reader *pfile; | |
591e15a1 | 276 | struct search_path *prev; |
dd69c71b | 277 | { |
591e15a1 | 278 | struct search_path *cur = prev->next; |
dd69c71b NB |
279 | |
280 | if (CPP_OPTION (pfile, verbose)) | |
281 | fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name); | |
282 | ||
283 | prev->next = cur->next; | |
591e15a1 | 284 | free ((PTR) cur->name); |
dd69c71b NB |
285 | free (cur); |
286 | ||
287 | return prev; | |
288 | } | |
289 | ||
290 | /* Remove duplicate directories from a chain. Returns the tail of the | |
291 | chain, or NULL if the chain is empty. This algorithm is quadratic | |
292 | in the number of -I switches, which is acceptable since there | |
293 | aren't usually that many of them. */ | |
002ee64f | 294 | static struct search_path * |
dd69c71b NB |
295 | remove_dup_dirs (pfile, head) |
296 | cpp_reader *pfile; | |
591e15a1 | 297 | struct search_path *head; |
dd69c71b | 298 | { |
591e15a1 | 299 | struct search_path *prev = NULL, *cur, *other; |
dd69c71b NB |
300 | |
301 | for (cur = head; cur; cur = cur->next) | |
302 | { | |
303 | for (other = head; other != cur; other = other->next) | |
304 | if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev) | |
305 | { | |
002ee64f | 306 | if (cur->sysp && !other->sysp) |
dbead49c NS |
307 | { |
308 | cpp_warning (pfile, | |
309 | "changing search order for system directory \"%s\"", | |
310 | cur->name); | |
311 | if (strcmp (cur->name, other->name)) | |
002ee64f NS |
312 | cpp_warning (pfile, |
313 | " as it is the same as non-system directory \"%s\"", | |
dbead49c NS |
314 | other->name); |
315 | else | |
002ee64f NS |
316 | cpp_warning (pfile, |
317 | " as it has already been specified as a non-system directory"); | |
dbead49c | 318 | } |
dd69c71b NB |
319 | cur = remove_dup_dir (pfile, prev); |
320 | break; | |
321 | } | |
322 | prev = cur; | |
323 | } | |
324 | ||
325 | return prev; | |
326 | } | |
327 | ||
88ae23e7 ZW |
328 | /* Merge the four include chains together in the order quote, bracket, |
329 | system, after. Remove duplicate dirs (as determined by | |
330 | INO_T_EQ()). The system_include and after_include chains are never | |
331 | referred to again after this function; all access is through the | |
332 | bracket_include path. | |
333 | ||
334 | For the future: Check if the directory is empty (but | |
4a58aab6 | 335 | how?) and possibly preload the include hash. */ |
88ae23e7 ZW |
336 | |
337 | static void | |
ae79697b ZW |
338 | merge_include_chains (pfile) |
339 | cpp_reader *pfile; | |
88ae23e7 | 340 | { |
591e15a1 | 341 | struct search_path *quote, *brack, *systm, *qtail; |
88ae23e7 | 342 | |
ae79697b | 343 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
88ae23e7 | 344 | |
ae79697b ZW |
345 | quote = pend->quote_head; |
346 | brack = pend->brack_head; | |
347 | systm = pend->systm_head; | |
dd69c71b | 348 | qtail = pend->quote_tail; |
88ae23e7 | 349 | |
dd69c71b NB |
350 | /* Paste together bracket, system, and after include chains. */ |
351 | if (systm) | |
352 | pend->systm_tail->next = pend->after_head; | |
88ae23e7 | 353 | else |
dd69c71b NB |
354 | systm = pend->after_head; |
355 | ||
356 | if (brack) | |
357 | pend->brack_tail->next = systm; | |
88ae23e7 ZW |
358 | else |
359 | brack = systm; | |
360 | ||
dd69c71b NB |
361 | /* This is a bit tricky. First we drop dupes from the quote-include |
362 | list. Then we drop dupes from the bracket-include list. | |
363 | Finally, if qtail and brack are the same directory, we cut out | |
cb773845 | 364 | brack and move brack up to point to qtail. |
88ae23e7 ZW |
365 | |
366 | We can't just merge the lists and then uniquify them because | |
367 | then we may lose directories from the <> search path that should | |
368 | be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however | |
369 | safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written | |
dd69c71b | 370 | -Ibar -I- -Ifoo -Iquux. */ |
88ae23e7 | 371 | |
dd69c71b NB |
372 | remove_dup_dirs (pfile, brack); |
373 | qtail = remove_dup_dirs (pfile, quote); | |
88ae23e7 ZW |
374 | |
375 | if (quote) | |
376 | { | |
dd69c71b NB |
377 | qtail->next = brack; |
378 | ||
379 | /* If brack == qtail, remove brack as it's simpler. */ | |
88ae23e7 | 380 | if (INO_T_EQ (qtail->ino, brack->ino) && qtail->dev == brack->dev) |
dd69c71b | 381 | brack = remove_dup_dir (pfile, qtail); |
88ae23e7 ZW |
382 | } |
383 | else | |
bef985f3 | 384 | quote = brack; |
88ae23e7 | 385 | |
ae79697b ZW |
386 | CPP_OPTION (pfile, quote_include) = quote; |
387 | CPP_OPTION (pfile, bracket_include) = brack; | |
88ae23e7 ZW |
388 | } |
389 | ||
dd07b884 NB |
390 | /* Sets internal flags correctly for a given language, and defines |
391 | macros if necessary. */ | |
a01eb545 ZW |
392 | |
393 | struct lang_flags | |
394 | { | |
395 | char c99; | |
396 | char objc; | |
397 | char cplusplus; | |
398 | char extended_numbers; | |
399 | char trigraphs; | |
400 | char dollars_in_ident; | |
401 | char cplusplus_comments; | |
402 | char digraphs; | |
403 | }; | |
404 | ||
405 | /* ??? Enable $ in identifiers in assembly? */ | |
406 | static const struct lang_flags lang_defaults[] = | |
407 | { /* c99 objc c++ xnum trig dollar c++comm digr */ | |
408 | /* GNUC89 */ { 0, 0, 0, 1, 0, 1, 1, 1 }, | |
409 | /* GNUC99 */ { 1, 0, 0, 1, 0, 1, 1, 1 }, | |
410 | /* STDC89 */ { 0, 0, 0, 0, 1, 0, 0, 0 }, | |
411 | /* STDC94 */ { 0, 0, 0, 0, 1, 0, 0, 1 }, | |
412 | /* STDC99 */ { 1, 0, 0, 1, 1, 0, 1, 1 }, | |
413 | /* GNUCXX */ { 0, 0, 1, 1, 0, 1, 1, 1 }, | |
414 | /* CXX98 */ { 0, 0, 1, 1, 1, 0, 1, 1 }, | |
415 | /* OBJC */ { 0, 1, 0, 1, 0, 1, 1, 1 }, | |
416 | /* OBJCXX */ { 0, 1, 1, 1, 0, 1, 1, 1 }, | |
417 | /* ASM */ { 0, 0, 0, 1, 0, 0, 1, 0 } | |
418 | }; | |
419 | ||
dd07b884 NB |
420 | static void |
421 | set_lang (pfile, lang) | |
422 | cpp_reader *pfile; | |
423 | enum c_lang lang; | |
424 | { | |
a01eb545 ZW |
425 | const struct lang_flags *l = &lang_defaults[(int) lang]; |
426 | ||
bdb05a7b | 427 | CPP_OPTION (pfile, lang) = lang; |
dd07b884 | 428 | |
a01eb545 ZW |
429 | CPP_OPTION (pfile, c99) = l->c99; |
430 | CPP_OPTION (pfile, objc) = l->objc; | |
431 | CPP_OPTION (pfile, cplusplus) = l->cplusplus; | |
432 | CPP_OPTION (pfile, extended_numbers) = l->extended_numbers; | |
433 | CPP_OPTION (pfile, trigraphs) = l->trigraphs; | |
434 | CPP_OPTION (pfile, dollars_in_ident) = l->dollars_in_ident; | |
435 | CPP_OPTION (pfile, cplusplus_comments) = l->cplusplus_comments; | |
436 | CPP_OPTION (pfile, digraphs) = l->digraphs; | |
dd07b884 NB |
437 | } |
438 | ||
7ca3d2b1 NB |
439 | #ifdef HOST_EBCDIC |
440 | static int opt_comp PARAMS ((const void *, const void *)); | |
441 | ||
442 | /* Run-time sorting of options array. */ | |
443 | static int | |
444 | opt_comp (p1, p2) | |
445 | const void *p1, *p2; | |
446 | { | |
447 | return strcmp (((struct cl_option *) p1)->opt_text, | |
448 | ((struct cl_option *) p2)->opt_text); | |
449 | } | |
450 | #endif | |
cf44ea52 | 451 | |
7ca3d2b1 NB |
452 | /* init initializes library global state. It might not need to |
453 | do anything depending on the platform and compiler. */ | |
cf44ea52 NB |
454 | |
455 | static void | |
674c3b40 | 456 | init_library () |
cf44ea52 | 457 | { |
7ca3d2b1 NB |
458 | static int initialized = 0; |
459 | ||
460 | if (! initialized) | |
461 | { | |
462 | initialized = 1; | |
463 | ||
cf44ea52 | 464 | #ifdef HOST_EBCDIC |
7ca3d2b1 NB |
465 | /* For non-ASCII hosts, the cl_options array needs to be sorted at |
466 | runtime. */ | |
467 | qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp); | |
cf44ea52 NB |
468 | #endif |
469 | ||
7ca3d2b1 NB |
470 | /* Set up the trigraph map. This doesn't need to do anything if |
471 | we were compiled with a compiler that supports C99 designated | |
472 | initializers. */ | |
473 | init_trigraph_map (); | |
474 | } | |
cf44ea52 NB |
475 | } |
476 | ||
ec5c56db | 477 | /* Initialize a cpp_reader structure. */ |
cf44ea52 | 478 | cpp_reader * |
2a967f3d NB |
479 | cpp_create_reader (table, lang) |
480 | hash_table *table; | |
dd07b884 | 481 | enum c_lang lang; |
6de1e2a9 | 482 | { |
93c80368 | 483 | struct spec_nodes *s; |
7ca3d2b1 | 484 | cpp_reader *pfile; |
93c80368 | 485 | |
cf44ea52 | 486 | /* Initialise this instance of the library if it hasn't been already. */ |
674c3b40 | 487 | init_library (); |
7ca3d2b1 NB |
488 | |
489 | pfile = (cpp_reader *) xcalloc (1, sizeof (cpp_reader)); | |
93c80368 | 490 | |
c740cee2 | 491 | set_lang (pfile, lang); |
ae79697b ZW |
492 | CPP_OPTION (pfile, warn_import) = 1; |
493 | CPP_OPTION (pfile, discard_comments) = 1; | |
494 | CPP_OPTION (pfile, show_column) = 1; | |
6ab3e7dd | 495 | CPP_OPTION (pfile, tabstop) = 8; |
be768055 | 496 | CPP_OPTION (pfile, operator_names) = 1; |
ae79697b ZW |
497 | |
498 | CPP_OPTION (pfile, pending) = | |
499 | (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending)); | |
500 | ||
f7114e17 NB |
501 | /* It's simplest to just create this struct whether or not it will |
502 | be needed. */ | |
503 | pfile->deps = deps_init (); | |
504 | ||
50410426 NB |
505 | /* Initialise the line map. Start at logical line 1, so we can use |
506 | a line number of zero for special states. */ | |
d82fc108 | 507 | init_line_maps (&pfile->line_maps); |
50410426 | 508 | pfile->line = 1; |
d82fc108 | 509 | |
4a58aab6 | 510 | /* Initialize lexer state. */ |
93c80368 NB |
511 | pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments); |
512 | ||
4ed5bcfb | 513 | /* Set up static tokens. */ |
93c80368 | 514 | pfile->date.type = CPP_EOF; |
4ed5bcfb NB |
515 | pfile->avoid_paste.type = CPP_PADDING; |
516 | pfile->avoid_paste.val.source = NULL; | |
517 | pfile->eof.type = CPP_EOF; | |
518 | pfile->eof.flags = 0; | |
93c80368 | 519 | |
5fddcffc NB |
520 | /* Create a token buffer for the lexer. */ |
521 | _cpp_init_tokenrun (&pfile->base_run, 250); | |
522 | pfile->cur_run = &pfile->base_run; | |
523 | pfile->cur_token = pfile->base_run.base; | |
5fddcffc | 524 | |
93c80368 NB |
525 | /* Initialise the base context. */ |
526 | pfile->context = &pfile->base_context; | |
527 | pfile->base_context.macro = 0; | |
528 | pfile->base_context.prev = pfile->base_context.next = 0; | |
529 | ||
530 | /* Identifier pool initially 8K. Unaligned, permanent pool. */ | |
531 | _cpp_init_pool (&pfile->ident_pool, 8 * 1024, 1, 0); | |
532 | ||
93c80368 NB |
533 | /* Argument pool initially 8K. Aligned, temporary pool. */ |
534 | _cpp_init_pool (&pfile->argument_pool, 8 * 1024, 0, 1); | |
535 | ||
536 | /* Macro pool initially 8K. Aligned, permanent pool. */ | |
537 | _cpp_init_pool (&pfile->macro_pool, 8 * 1024, 0, 0); | |
3cb553b4 | 538 | |
2a967f3d NB |
539 | /* Initialise the buffer obstack. */ |
540 | gcc_obstack_init (&pfile->buffer_ob); | |
541 | ||
542 | /* Initialise the hashtable. */ | |
543 | _cpp_init_hashtable (pfile, table); | |
544 | ||
545 | _cpp_init_directives (pfile); | |
c71f835b | 546 | _cpp_init_includes (pfile); |
58fea6af | 547 | _cpp_init_internal_pragmas (pfile); |
6de1e2a9 | 548 | |
93c80368 NB |
549 | /* Initialize the special nodes. */ |
550 | s = &pfile->spec_nodes; | |
551 | s->n_L = cpp_lookup (pfile, DSC("L")); | |
552 | s->n_defined = cpp_lookup (pfile, DSC("defined")); | |
7d4918a2 ZW |
553 | s->n_true = cpp_lookup (pfile, DSC("true")); |
554 | s->n_false = cpp_lookup (pfile, DSC("false")); | |
a5c3cccd | 555 | s->n__Pragma = cpp_lookup (pfile, DSC("_Pragma")); |
93c80368 NB |
556 | s->n__STRICT_ANSI__ = cpp_lookup (pfile, DSC("__STRICT_ANSI__")); |
557 | s->n__CHAR_UNSIGNED__ = cpp_lookup (pfile, DSC("__CHAR_UNSIGNED__")); | |
558 | s->n__VA_ARGS__ = cpp_lookup (pfile, DSC("__VA_ARGS__")); | |
559 | s->n__VA_ARGS__->flags |= NODE_DIAGNOSTIC; | |
cf44ea52 NB |
560 | |
561 | return pfile; | |
f2d5f0cc ZW |
562 | } |
563 | ||
400023a3 NB |
564 | /* Free resources used by PFILE. Accessing PFILE after this function |
565 | returns leads to undefined behaviour. */ | |
566 | int | |
567 | cpp_destroy (pfile) | |
6de1e2a9 ZW |
568 | cpp_reader *pfile; |
569 | { | |
400023a3 | 570 | int result; |
591e15a1 | 571 | struct search_path *dir, *dirn; |
93c80368 | 572 | cpp_context *context, *contextn; |
50410426 | 573 | tokenrun *run, *runn; |
709e9e50 | 574 | |
38b24ee2 | 575 | while (CPP_BUFFER (pfile) != NULL) |
ef6e958a | 576 | _cpp_pop_buffer (pfile); |
6de1e2a9 | 577 | |
93c80368 | 578 | if (pfile->macro_buffer) |
4b49c365 AO |
579 | { |
580 | free ((PTR) pfile->macro_buffer); | |
581 | pfile->macro_buffer = NULL; | |
582 | pfile->macro_buffer_len = 0; | |
583 | } | |
93c80368 | 584 | |
f7114e17 | 585 | deps_free (pfile->deps); |
2a967f3d | 586 | obstack_free (&pfile->buffer_ob, 0); |
49e6c08e | 587 | |
2a967f3d | 588 | _cpp_destroy_hashtable (pfile); |
bfb9dc7f | 589 | _cpp_cleanup_includes (pfile); |
709e9e50 | 590 | |
93c80368 | 591 | _cpp_free_pool (&pfile->ident_pool); |
93c80368 NB |
592 | _cpp_free_pool (&pfile->macro_pool); |
593 | _cpp_free_pool (&pfile->argument_pool); | |
b8af0ca5 | 594 | _cpp_free_buff (pfile->free_buffs); |
93c80368 | 595 | |
50410426 NB |
596 | for (run = &pfile->base_run; run; run = runn) |
597 | { | |
598 | runn = run->next; | |
599 | free (run->base); | |
600 | if (run != &pfile->base_run) | |
601 | free (run); | |
602 | } | |
603 | ||
93c80368 | 604 | for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn) |
709e9e50 | 605 | { |
93c80368 | 606 | dirn = dir->next; |
591e15a1 | 607 | free ((PTR) dir->name); |
709e9e50 NB |
608 | free (dir); |
609 | } | |
93c80368 NB |
610 | |
611 | for (context = pfile->base_context.next; context; context = contextn) | |
612 | { | |
613 | contextn = context->next; | |
614 | free (context); | |
615 | } | |
400023a3 | 616 | |
d82fc108 NB |
617 | free_line_maps (&pfile->line_maps); |
618 | ||
400023a3 NB |
619 | result = pfile->errors; |
620 | free (pfile); | |
621 | ||
622 | return result; | |
6de1e2a9 ZW |
623 | } |
624 | ||
625 | ||
93c80368 NB |
626 | /* This structure defines one built-in identifier. A node will be |
627 | entered in the hash table under the name NAME, with value VALUE (if | |
628 | any). If flags has OPERATOR, the node's operator field is used; if | |
618cdda7 NB |
629 | flags has BUILTIN the node's builtin field is used. Macros that are |
630 | known at build time should not be flagged BUILTIN, as then they do | |
631 | not appear in macro dumps with e.g. -dM or -dD. | |
92936ecf ZW |
632 | |
633 | Two values are not compile time constants, so we tag | |
041c3194 | 634 | them in the FLAGS field instead: |
8c389f84 ZW |
635 | VERS value is the global version_string, quoted |
636 | ULP value is the global user_label_prefix | |
92936ecf | 637 | |
93c80368 | 638 | Also, macros with CPLUS set in the flags field are entered only for C++. */ |
a9ae4483 ZW |
639 | |
640 | struct builtin | |
641 | { | |
12cf91fe | 642 | const U_CHAR *name; |
041c3194 | 643 | const char *value; |
93c80368 NB |
644 | unsigned char builtin; |
645 | unsigned char operator; | |
a9ae4483 | 646 | unsigned short flags; |
93c80368 | 647 | unsigned short len; |
a9ae4483 | 648 | }; |
93c80368 NB |
649 | #define VERS 0x01 |
650 | #define ULP 0x02 | |
651 | #define CPLUS 0x04 | |
652 | #define BUILTIN 0x08 | |
653 | #define OPERATOR 0x10 | |
654 | ||
655 | #define B(n, t) { U n, 0, t, 0, BUILTIN, sizeof n - 1 } | |
656 | #define C(n, v) { U n, v, 0, 0, 0, sizeof n - 1 } | |
657 | #define X(n, f) { U n, 0, 0, 0, f, sizeof n - 1 } | |
658 | #define O(n, c, f) { U n, 0, 0, c, OPERATOR | f, sizeof n - 1 } | |
a9ae4483 | 659 | static const struct builtin builtin_array[] = |
6de1e2a9 | 660 | { |
93c80368 NB |
661 | B("__TIME__", BT_TIME), |
662 | B("__DATE__", BT_DATE), | |
663 | B("__FILE__", BT_FILE), | |
664 | B("__BASE_FILE__", BT_BASE_FILE), | |
665 | B("__LINE__", BT_SPECLINE), | |
666 | B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL), | |
12cf91fe | 667 | |
041c3194 ZW |
668 | X("__VERSION__", VERS), |
669 | X("__USER_LABEL_PREFIX__", ULP), | |
12cf91fe ZW |
670 | C("__REGISTER_PREFIX__", REGISTER_PREFIX), |
671 | C("__HAVE_BUILTIN_SETJMP__", "1"), | |
6de1e2a9 | 672 | #ifndef NO_BUILTIN_SIZE_TYPE |
12cf91fe | 673 | C("__SIZE_TYPE__", SIZE_TYPE), |
6de1e2a9 ZW |
674 | #endif |
675 | #ifndef NO_BUILTIN_PTRDIFF_TYPE | |
12cf91fe | 676 | C("__PTRDIFF_TYPE__", PTRDIFF_TYPE), |
6de1e2a9 | 677 | #endif |
0209c340 | 678 | #ifndef NO_BUILTIN_WCHAR_TYPE |
12cf91fe | 679 | C("__WCHAR_TYPE__", WCHAR_TYPE), |
0209c340 | 680 | #endif |
d6777972 JM |
681 | #ifndef NO_BUILTIN_WINT_TYPE |
682 | C("__WINT_TYPE__", WINT_TYPE), | |
683 | #endif | |
618cdda7 NB |
684 | #ifdef STDC_0_IN_SYSTEM_HEADERS |
685 | B("__STDC__", BT_STDC), | |
686 | #else | |
687 | C("__STDC__", "1"), | |
688 | #endif | |
92936ecf ZW |
689 | |
690 | /* Named operators known to the preprocessor. These cannot be #defined | |
691 | and always have their stated meaning. They are treated like normal | |
93c80368 | 692 | identifiers except for the type code and the meaning. Most of them |
92936ecf | 693 | are only for C++ (but see iso646.h). */ |
92936ecf ZW |
694 | O("and", CPP_AND_AND, CPLUS), |
695 | O("and_eq", CPP_AND_EQ, CPLUS), | |
696 | O("bitand", CPP_AND, CPLUS), | |
697 | O("bitor", CPP_OR, CPLUS), | |
698 | O("compl", CPP_COMPL, CPLUS), | |
699 | O("not", CPP_NOT, CPLUS), | |
700 | O("not_eq", CPP_NOT_EQ, CPLUS), | |
701 | O("or", CPP_OR_OR, CPLUS), | |
702 | O("or_eq", CPP_OR_EQ, CPLUS), | |
703 | O("xor", CPP_XOR, CPLUS), | |
93c80368 | 704 | O("xor_eq", CPP_XOR_EQ, CPLUS) |
a9ae4483 | 705 | }; |
12cf91fe ZW |
706 | #undef B |
707 | #undef C | |
708 | #undef X | |
be768055 | 709 | #undef O |
8c389f84 ZW |
710 | #define builtin_array_end \ |
711 | builtin_array + sizeof(builtin_array)/sizeof(struct builtin) | |
a9ae4483 ZW |
712 | |
713 | /* Subroutine of cpp_start_read; reads the builtins table above and | |
714 | enters the macros into the hash table. */ | |
a9ae4483 | 715 | static void |
7ca3d2b1 | 716 | init_builtins (pfile) |
a9ae4483 ZW |
717 | cpp_reader *pfile; |
718 | { | |
a9ae4483 | 719 | const struct builtin *b; |
771c4df3 | 720 | |
8c389f84 | 721 | for(b = builtin_array; b < builtin_array_end; b++) |
6de1e2a9 | 722 | { |
93c80368 | 723 | if ((b->flags & CPLUS) && ! CPP_OPTION (pfile, cplusplus)) |
92936ecf ZW |
724 | continue; |
725 | ||
be768055 JJ |
726 | if ((b->flags & OPERATOR) && ! CPP_OPTION (pfile, operator_names)) |
727 | continue; | |
728 | ||
93c80368 NB |
729 | if (b->flags & (OPERATOR | BUILTIN)) |
730 | { | |
731 | cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len); | |
732 | if (b->flags & OPERATOR) | |
733 | { | |
734 | hp->flags |= NODE_OPERATOR; | |
735 | hp->value.operator = b->operator; | |
736 | } | |
737 | else | |
738 | { | |
739 | hp->type = NT_MACRO; | |
618cdda7 | 740 | hp->flags |= NODE_BUILTIN | NODE_WARN; |
93c80368 NB |
741 | hp->value.builtin = b->builtin; |
742 | } | |
743 | } | |
744 | else /* A standard macro of some kind. */ | |
8c389f84 | 745 | { |
041c3194 ZW |
746 | const char *val; |
747 | char *str; | |
748 | ||
749 | if (b->flags & VERS) | |
750 | { | |
2c8f0515 ZW |
751 | /* Allocate enough space for 'name "value"\n\0'. */ |
752 | str = alloca (b->len + strlen (version_string) + 5); | |
753 | sprintf (str, "%s \"%s\"\n", b->name, version_string); | |
041c3194 ZW |
754 | } |
755 | else | |
756 | { | |
757 | if (b->flags & ULP) | |
771c4df3 | 758 | val = CPP_OPTION (pfile, user_label_prefix); |
041c3194 ZW |
759 | else |
760 | val = b->value; | |
761 | ||
2c8f0515 ZW |
762 | /* Allocate enough space for "name value\n\0". */ |
763 | str = alloca (b->len + strlen (val) + 3); | |
764 | sprintf(str, "%s %s\n", b->name, val); | |
041c3194 | 765 | } |
c154ba66 | 766 | |
2c8f0515 | 767 | _cpp_define_builtin (pfile, str); |
8c389f84 | 768 | } |
6de1e2a9 | 769 | } |
c740cee2 NB |
770 | |
771 | if (CPP_OPTION (pfile, cplusplus)) | |
618cdda7 NB |
772 | { |
773 | _cpp_define_builtin (pfile, "__cplusplus 1"); | |
774 | if (SUPPORTS_ONE_ONLY) | |
775 | _cpp_define_builtin (pfile, "__GXX_WEAK__ 1"); | |
776 | else | |
777 | _cpp_define_builtin (pfile, "__GXX_WEAK__ 0"); | |
778 | } | |
c740cee2 NB |
779 | if (CPP_OPTION (pfile, objc)) |
780 | _cpp_define_builtin (pfile, "__OBJC__ 1"); | |
781 | ||
782 | if (CPP_OPTION (pfile, lang) == CLK_STDC94) | |
783 | _cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L"); | |
784 | else if (CPP_OPTION (pfile, c99)) | |
785 | _cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L"); | |
786 | ||
787 | if (CPP_OPTION (pfile, lang) == CLK_STDC89 | |
788 | || CPP_OPTION (pfile, lang) == CLK_STDC94 | |
789 | || CPP_OPTION (pfile, lang) == CLK_STDC99) | |
790 | _cpp_define_builtin (pfile, "__STRICT_ANSI__ 1"); | |
791 | else if (CPP_OPTION (pfile, lang) == CLK_ASM) | |
792 | _cpp_define_builtin (pfile, "__ASSEMBLER__ 1"); | |
6de1e2a9 | 793 | } |
93c80368 NB |
794 | #undef BUILTIN |
795 | #undef OPERATOR | |
6feb7728 | 796 | #undef VERS |
a9ae4483 | 797 | #undef ULP |
93c80368 | 798 | #undef CPLUS |
041c3194 | 799 | #undef builtin_array_end |
6de1e2a9 | 800 | |
c45da1ca ZW |
801 | /* And another subroutine. This one sets up the standard include path. */ |
802 | static void | |
7ca3d2b1 | 803 | init_standard_includes (pfile) |
c45da1ca ZW |
804 | cpp_reader *pfile; |
805 | { | |
c45da1ca | 806 | char *path; |
455d2586 | 807 | const struct default_include *p; |
ae79697b | 808 | const char *specd_prefix = CPP_OPTION (pfile, include_prefix); |
c45da1ca ZW |
809 | |
810 | /* Several environment variables may add to the include search path. | |
811 | CPATH specifies an additional list of directories to be searched | |
812 | as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH, | |
813 | etc. specify an additional list of directories to be searched as | |
814 | if specified with -isystem, for the language indicated. */ | |
815 | ||
816 | GET_ENV_PATH_LIST (path, "CPATH"); | |
817 | if (path != 0 && *path != 0) | |
e33f6253 | 818 | path_include (pfile, path, BRACKET); |
c45da1ca | 819 | |
ae79697b | 820 | switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus)) |
c45da1ca ZW |
821 | { |
822 | case 0: | |
823 | GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH"); | |
824 | break; | |
825 | case 1: | |
826 | GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH"); | |
827 | break; | |
828 | case 2: | |
829 | GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH"); | |
830 | break; | |
831 | case 3: | |
832 | GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH"); | |
833 | break; | |
834 | } | |
835 | if (path != 0 && *path != 0) | |
e33f6253 | 836 | path_include (pfile, path, SYSTEM); |
c45da1ca ZW |
837 | |
838 | /* Search "translated" versions of GNU directories. | |
839 | These have /usr/local/lib/gcc... replaced by specd_prefix. */ | |
60893f43 | 840 | if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len) |
c45da1ca | 841 | { |
c45da1ca | 842 | /* Remove the `include' from /usr/local/lib/gcc.../include. |
ec5c56db | 843 | GCC_INCLUDE_DIR will always end in /include. */ |
60893f43 ZW |
844 | int default_len = cpp_GCC_INCLUDE_DIR_len; |
845 | char *default_prefix = (char *) alloca (default_len + 1); | |
c45da1ca ZW |
846 | int specd_len = strlen (specd_prefix); |
847 | ||
60893f43 | 848 | memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len); |
c45da1ca ZW |
849 | default_prefix[default_len] = '\0'; |
850 | ||
60893f43 | 851 | for (p = cpp_include_defaults; p->fname; p++) |
c45da1ca ZW |
852 | { |
853 | /* Some standard dirs are only for C++. */ | |
854 | if (!p->cplusplus | |
ae79697b ZW |
855 | || (CPP_OPTION (pfile, cplusplus) |
856 | && !CPP_OPTION (pfile, no_standard_cplusplus_includes))) | |
c45da1ca ZW |
857 | { |
858 | /* Does this dir start with the prefix? */ | |
61d0346d | 859 | if (!memcmp (p->fname, default_prefix, default_len)) |
c45da1ca ZW |
860 | { |
861 | /* Yes; change prefix and add to search list. */ | |
862 | int flen = strlen (p->fname); | |
863 | int this_len = specd_len + flen - default_len; | |
864 | char *str = (char *) xmalloc (this_len + 1); | |
865 | memcpy (str, specd_prefix, specd_len); | |
866 | memcpy (str + specd_len, | |
867 | p->fname + default_len, | |
868 | flen - default_len + 1); | |
869 | ||
e33f6253 | 870 | append_include_chain (pfile, str, SYSTEM, p->cxx_aware); |
c45da1ca ZW |
871 | } |
872 | } | |
873 | } | |
874 | } | |
875 | ||
876 | /* Search ordinary names for GNU include directories. */ | |
60893f43 | 877 | for (p = cpp_include_defaults; p->fname; p++) |
c45da1ca ZW |
878 | { |
879 | /* Some standard dirs are only for C++. */ | |
880 | if (!p->cplusplus | |
ae79697b ZW |
881 | || (CPP_OPTION (pfile, cplusplus) |
882 | && !CPP_OPTION (pfile, no_standard_cplusplus_includes))) | |
c45da1ca | 883 | { |
51c04256 | 884 | char *str = update_path (p->fname, p->component); |
e33f6253 | 885 | append_include_chain (pfile, str, SYSTEM, p->cxx_aware); |
c45da1ca ZW |
886 | } |
887 | } | |
888 | } | |
889 | ||
d7bc7a98 NB |
890 | /* Pushes a -imacro and -include file given on the command line onto |
891 | the buffer stack. Returns non-zero if successful. */ | |
892 | static bool | |
893 | push_include (pfile, p) | |
4a58aab6 NB |
894 | cpp_reader *pfile; |
895 | struct pending_option *p; | |
4a58aab6 | 896 | { |
d7bc7a98 | 897 | cpp_token header; |
4a58aab6 | 898 | |
d7bc7a98 NB |
899 | /* Later: maybe update this to use the #include "" search path |
900 | if cpp_read_file fails. */ | |
901 | header.type = CPP_STRING; | |
902 | header.val.str.text = (const unsigned char *) p->arg; | |
903 | header.val.str.len = strlen (p->arg); | |
904 | /* Make the command line directive take up a line. */ | |
50410426 | 905 | pfile->line++; |
d7bc7a98 NB |
906 | |
907 | return _cpp_execute_include (pfile, &header, IT_CMDLINE); | |
908 | } | |
909 | ||
910 | /* Frees a pending_option chain. */ | |
911 | static void | |
912 | free_chain (head) | |
913 | struct pending_option *head; | |
914 | { | |
915 | struct pending_option *next; | |
916 | ||
917 | while (head) | |
918 | { | |
919 | next = head->next; | |
920 | free (head); | |
921 | head = next; | |
4a58aab6 NB |
922 | } |
923 | } | |
924 | ||
05e81724 | 925 | /* This is called after options have been processed. Setup for |
373e2177 NB |
926 | processing input from the file named FNAME, or stdin if it is the |
927 | empty string. Return 1 on success, 0 on failure. */ | |
6de1e2a9 | 928 | int |
93c80368 | 929 | cpp_start_read (pfile, fname) |
6de1e2a9 | 930 | cpp_reader *pfile; |
7ceb3598 | 931 | const char *fname; |
6de1e2a9 | 932 | { |
c45da1ca | 933 | /* Set up the include search path now. */ |
ae79697b | 934 | if (! CPP_OPTION (pfile, no_standard_includes)) |
7ca3d2b1 | 935 | init_standard_includes (pfile); |
c45da1ca | 936 | |
ae79697b | 937 | merge_include_chains (pfile); |
c45da1ca ZW |
938 | |
939 | /* With -v, print the list of dirs to search. */ | |
ae79697b | 940 | if (CPP_OPTION (pfile, verbose)) |
c45da1ca | 941 | { |
591e15a1 | 942 | struct search_path *l; |
c45da1ca | 943 | fprintf (stderr, _("#include \"...\" search starts here:\n")); |
ae79697b | 944 | for (l = CPP_OPTION (pfile, quote_include); l; l = l->next) |
c45da1ca | 945 | { |
ae79697b | 946 | if (l == CPP_OPTION (pfile, bracket_include)) |
c45da1ca ZW |
947 | fprintf (stderr, _("#include <...> search starts here:\n")); |
948 | fprintf (stderr, " %s\n", l->name); | |
949 | } | |
950 | fprintf (stderr, _("End of search list.\n")); | |
951 | } | |
952 | ||
96302433 | 953 | if (CPP_OPTION (pfile, print_deps)) |
7855db7c | 954 | /* Set the default target (if there is none already). */ |
373e2177 | 955 | deps_add_default_target (pfile->deps, fname); |
96302433 NB |
956 | |
957 | /* Open the main input file. This must be done early, so we have a | |
958 | buffer to stand on. */ | |
614c7d37 | 959 | if (!_cpp_read_file (pfile, fname)) |
c45da1ca ZW |
960 | return 0; |
961 | ||
5993019d NB |
962 | /* Set this after cpp_post_options so the client can change the |
963 | option if it wishes, and after stacking the main file so we don't | |
964 | trace the main file. */ | |
965 | pfile->line_maps.trace_includes = CPP_OPTION (pfile, print_include_names); | |
966 | ||
d7bc7a98 NB |
967 | /* Install builtins and process command line macros etc. in the order |
968 | they appeared, but only if not already preprocessed. */ | |
05e81724 | 969 | if (! CPP_OPTION (pfile, preprocessed)) |
6de1e2a9 | 970 | { |
d7bc7a98 NB |
971 | struct pending_option *p; |
972 | ||
973 | _cpp_do_file_change (pfile, LC_RENAME, _("<builtin>"), 1, 0); | |
974 | init_builtins (pfile); | |
975 | _cpp_do_file_change (pfile, LC_RENAME, _("<command line>"), 1, 0); | |
976 | for (p = CPP_OPTION (pfile, pending)->directive_head; p; p = p->next) | |
05e81724 | 977 | (*p->handler) (pfile, p->arg); |
d7bc7a98 NB |
978 | |
979 | /* Scan -imacros files after command line defines, but before | |
980 | files given with -include. */ | |
53aabfbc | 981 | while ((p = CPP_OPTION (pfile, pending)->imacros_head) != NULL) |
d7bc7a98 NB |
982 | { |
983 | if (push_include (pfile, p)) | |
984 | { | |
985 | pfile->buffer->return_at_eof = true; | |
986 | cpp_scan_nooutput (pfile); | |
987 | } | |
53aabfbc NB |
988 | CPP_OPTION (pfile, pending)->imacros_head = p->next; |
989 | free (p); | |
d7bc7a98 | 990 | } |
6de1e2a9 | 991 | } |
05e81724 | 992 | |
d7bc7a98 | 993 | free_chain (CPP_OPTION (pfile, pending)->directive_head); |
d7bc7a98 | 994 | _cpp_push_next_buffer (pfile); |
d82fc108 | 995 | |
d7bc7a98 NB |
996 | return 1; |
997 | } | |
6de1e2a9 | 998 | |
d7bc7a98 NB |
999 | /* Called to push the next buffer on the stack given by -include. If |
1000 | there are none, free the pending structure and restore the line map | |
1001 | for the main file. */ | |
1002 | bool | |
1003 | _cpp_push_next_buffer (pfile) | |
1004 | cpp_reader *pfile; | |
1005 | { | |
1006 | bool pushed = false; | |
6de1e2a9 | 1007 | |
53aabfbc NB |
1008 | /* This is't pretty; we'd rather not be relying on this as a boolean |
1009 | for reverting the line map. Further, we only free the chains in | |
1010 | this conditional, so an early call to cpp_finish / cpp_destroy | |
1011 | will leak that memory. */ | |
1012 | if (CPP_OPTION (pfile, pending) | |
1013 | && CPP_OPTION (pfile, pending)->imacros_head == NULL) | |
d7bc7a98 NB |
1014 | { |
1015 | while (!pushed) | |
1016 | { | |
1017 | struct pending_option *p = CPP_OPTION (pfile, pending)->include_head; | |
1018 | ||
1019 | if (p == NULL) | |
1020 | break; | |
1021 | if (! CPP_OPTION (pfile, preprocessed)) | |
1022 | pushed = push_include (pfile, p); | |
1023 | CPP_OPTION (pfile, pending)->include_head = p->next; | |
1024 | free (p); | |
1025 | } | |
1026 | ||
1027 | if (!pushed) | |
1028 | { | |
1029 | free (CPP_OPTION (pfile, pending)); | |
1030 | CPP_OPTION (pfile, pending) = NULL; | |
1031 | ||
1032 | /* Restore the line map for the main file. */ | |
1033 | if (! CPP_OPTION (pfile, preprocessed)) | |
1034 | _cpp_do_file_change (pfile, LC_RENAME, | |
1035 | pfile->line_maps.maps[0].to_file, 1, 0); | |
1036 | } | |
1037 | } | |
1038 | ||
1039 | return pushed; | |
6de1e2a9 ZW |
1040 | } |
1041 | ||
2f638f96 | 1042 | /* Use mkdeps.c to output dependency information. */ |
7ca3d2b1 NB |
1043 | static void |
1044 | output_deps (pfile) | |
1045 | cpp_reader *pfile; | |
1046 | { | |
1047 | /* Stream on which to print the dependency information. */ | |
1048 | FILE *deps_stream = 0; | |
27c38fbe KG |
1049 | const char *const deps_mode = |
1050 | CPP_OPTION (pfile, print_deps_append) ? "a" : "w"; | |
7ca3d2b1 NB |
1051 | |
1052 | if (CPP_OPTION (pfile, deps_file) == 0) | |
1053 | deps_stream = stdout; | |
1054 | else | |
1055 | { | |
1056 | deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode); | |
1057 | if (deps_stream == 0) | |
1058 | { | |
1059 | cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file)); | |
1060 | return; | |
1061 | } | |
1062 | } | |
1063 | ||
1064 | deps_write (pfile->deps, deps_stream, 72); | |
1065 | ||
1066 | if (CPP_OPTION (pfile, deps_phony_targets)) | |
1067 | deps_phony_targets (pfile->deps, deps_stream); | |
1068 | ||
1069 | /* Don't close stdout. */ | |
1070 | if (CPP_OPTION (pfile, deps_file)) | |
1071 | { | |
1072 | if (ferror (deps_stream) || fclose (deps_stream) != 0) | |
1073 | cpp_fatal (pfile, "I/O error on output"); | |
1074 | } | |
1075 | } | |
1076 | ||
6de1e2a9 ZW |
1077 | /* This is called at the end of preprocessing. It pops the |
1078 | last buffer and writes dependency output. It should also | |
1079 | clear macro definitions, such that you could call cpp_start_read | |
4a58aab6 | 1080 | with a new filename to restart processing. */ |
6de1e2a9 | 1081 | void |
93c80368 | 1082 | cpp_finish (pfile) |
6de1e2a9 ZW |
1083 | cpp_reader *pfile; |
1084 | { | |
7364fdd8 NB |
1085 | /* cpplex.c leaves the final buffer on the stack. This it so that |
1086 | it returns an unending stream of CPP_EOFs to the client. If we | |
1087 | popped the buffer, we'd derefence a NULL buffer pointer and | |
1088 | segfault. It's nice to allow the client to do worry-free excess | |
1089 | cpp_get_token calls. */ | |
1090 | while (pfile->buffer) | |
1091 | _cpp_pop_buffer (pfile); | |
c1212d2f | 1092 | |
49e6c08e | 1093 | /* Don't write the deps file if preprocessing has failed. */ |
ae79697b | 1094 | if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0) |
7ca3d2b1 | 1095 | output_deps (pfile); |
3caee4a8 | 1096 | |
d4506961 ZW |
1097 | /* Report on headers that could use multiple include guards. */ |
1098 | if (CPP_OPTION (pfile, print_include_names)) | |
c71f835b | 1099 | _cpp_report_missing_guards (pfile); |
6de1e2a9 ZW |
1100 | } |
1101 | ||
223dca6a | 1102 | static void |
ae79697b ZW |
1103 | new_pending_directive (pend, text, handler) |
1104 | struct cpp_pending *pend; | |
223dca6a | 1105 | const char *text; |
40eac643 | 1106 | cl_directive_handler handler; |
223dca6a RH |
1107 | { |
1108 | struct pending_option *o = (struct pending_option *) | |
1109 | xmalloc (sizeof (struct pending_option)); | |
1110 | ||
7ceb3598 | 1111 | o->arg = text; |
223dca6a | 1112 | o->next = NULL; |
40eac643 | 1113 | o->handler = handler; |
ae79697b | 1114 | APPEND (pend, directive, o); |
223dca6a RH |
1115 | } |
1116 | ||
ae79697b ZW |
1117 | /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string"); |
1118 | I.e. a const string initializer with parens around it. That is | |
1119 | what N_("string") resolves to, so we make no_* be macros instead. */ | |
1120 | #define no_arg N_("Argument missing after %s") | |
1121 | #define no_ass N_("Assertion missing after %s") | |
1122 | #define no_dir N_("Directory name missing after %s") | |
1123 | #define no_fil N_("File name missing after %s") | |
1124 | #define no_mac N_("Macro name missing after %s") | |
1125 | #define no_pth N_("Path name missing after %s") | |
6ab3e7dd | 1126 | #define no_num N_("Number missing after %s") |
03b9ab42 | 1127 | #define no_tgt N_("Target missing after %s") |
ae79697b ZW |
1128 | |
1129 | /* This is the list of all command line options, with the leading | |
1130 | "-" removed. It must be sorted in ASCII collating order. */ | |
1131 | #define COMMAND_LINE_OPTIONS \ | |
ae79697b ZW |
1132 | DEF_OPT("$", 0, OPT_dollar) \ |
1133 | DEF_OPT("+", 0, OPT_plus) \ | |
1134 | DEF_OPT("-help", 0, OPT__help) \ | |
91606ce2 | 1135 | DEF_OPT("-target-help", 0, OPT_target__help) \ |
ae79697b ZW |
1136 | DEF_OPT("-version", 0, OPT__version) \ |
1137 | DEF_OPT("A", no_ass, OPT_A) \ | |
1138 | DEF_OPT("C", 0, OPT_C) \ | |
1139 | DEF_OPT("D", no_mac, OPT_D) \ | |
1140 | DEF_OPT("H", 0, OPT_H) \ | |
1141 | DEF_OPT("I", no_dir, OPT_I) \ | |
1142 | DEF_OPT("M", 0, OPT_M) \ | |
e582248c | 1143 | DEF_OPT("MD", no_fil, OPT_MD) \ |
96302433 | 1144 | DEF_OPT("MF", no_fil, OPT_MF) \ |
ae79697b ZW |
1145 | DEF_OPT("MG", 0, OPT_MG) \ |
1146 | DEF_OPT("MM", 0, OPT_MM) \ | |
e582248c | 1147 | DEF_OPT("MMD", no_fil, OPT_MMD) \ |
a5a4ce3c | 1148 | DEF_OPT("MP", 0, OPT_MP) \ |
f7114e17 | 1149 | DEF_OPT("MQ", no_tgt, OPT_MQ) \ |
03b9ab42 | 1150 | DEF_OPT("MT", no_tgt, OPT_MT) \ |
ae79697b ZW |
1151 | DEF_OPT("P", 0, OPT_P) \ |
1152 | DEF_OPT("U", no_mac, OPT_U) \ | |
1153 | DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \ | |
1154 | DEF_OPT("d", no_arg, OPT_d) \ | |
1155 | DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \ | |
1156 | DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \ | |
be768055 | 1157 | DEF_OPT("fno-operator-names", 0, OPT_fno_operator_names) \ |
ae79697b ZW |
1158 | DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \ |
1159 | DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \ | |
1160 | DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \ | |
1161 | DEF_OPT("fshow-column", 0, OPT_fshow_column) \ | |
6ab3e7dd | 1162 | DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \ |
ae79697b ZW |
1163 | DEF_OPT("h", 0, OPT_h) \ |
1164 | DEF_OPT("idirafter", no_dir, OPT_idirafter) \ | |
1165 | DEF_OPT("imacros", no_fil, OPT_imacros) \ | |
1166 | DEF_OPT("include", no_fil, OPT_include) \ | |
1167 | DEF_OPT("iprefix", no_pth, OPT_iprefix) \ | |
1168 | DEF_OPT("isystem", no_dir, OPT_isystem) \ | |
1169 | DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \ | |
1170 | DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \ | |
1171 | DEF_OPT("lang-asm", 0, OPT_lang_asm) \ | |
1172 | DEF_OPT("lang-c", 0, OPT_lang_c) \ | |
1173 | DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \ | |
1174 | DEF_OPT("lang-c89", 0, OPT_lang_c89) \ | |
ae79697b ZW |
1175 | DEF_OPT("lang-objc", 0, OPT_lang_objc) \ |
1176 | DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \ | |
1177 | DEF_OPT("nostdinc", 0, OPT_nostdinc) \ | |
1178 | DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \ | |
1179 | DEF_OPT("o", no_fil, OPT_o) \ | |
1180 | DEF_OPT("pedantic", 0, OPT_pedantic) \ | |
1181 | DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \ | |
1182 | DEF_OPT("remap", 0, OPT_remap) \ | |
dd07b884 | 1183 | DEF_OPT("std=c++98", 0, OPT_std_cplusplus98) \ |
ae79697b ZW |
1184 | DEF_OPT("std=c89", 0, OPT_std_c89) \ |
1185 | DEF_OPT("std=c99", 0, OPT_std_c99) \ | |
1186 | DEF_OPT("std=c9x", 0, OPT_std_c9x) \ | |
1187 | DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \ | |
1188 | DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \ | |
1189 | DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \ | |
1190 | DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \ | |
1191 | DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \ | |
1192 | DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \ | |
1193 | DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \ | |
ae79697b ZW |
1194 | DEF_OPT("trigraphs", 0, OPT_trigraphs) \ |
1195 | DEF_OPT("v", 0, OPT_v) \ | |
f4cdc368 | 1196 | DEF_OPT("version", 0, OPT_version) \ |
ae79697b ZW |
1197 | DEF_OPT("w", 0, OPT_w) |
1198 | ||
1199 | #define DEF_OPT(text, msg, code) code, | |
e23c0ba3 ZW |
1200 | enum opt_code |
1201 | { | |
ae79697b | 1202 | COMMAND_LINE_OPTIONS |
e23c0ba3 ZW |
1203 | N_OPTS |
1204 | }; | |
ae79697b | 1205 | #undef DEF_OPT |
e23c0ba3 ZW |
1206 | |
1207 | struct cl_option | |
1208 | { | |
1209 | const char *opt_text; | |
1210 | const char *msg; | |
1211 | size_t opt_len; | |
1212 | enum opt_code opt_code; | |
1213 | }; | |
1214 | ||
ae79697b | 1215 | #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code }, |
e23c0ba3 ZW |
1216 | #ifdef HOST_EBCDIC |
1217 | static struct cl_option cl_options[] = | |
1218 | #else | |
1219 | static const struct cl_option cl_options[] = | |
1220 | #endif | |
1221 | { | |
ae79697b | 1222 | COMMAND_LINE_OPTIONS |
e23c0ba3 ZW |
1223 | }; |
1224 | #undef DEF_OPT | |
ae79697b | 1225 | #undef COMMAND_LINE_OPTIONS |
e23c0ba3 ZW |
1226 | |
1227 | /* Perform a binary search to find which, if any, option the given | |
1228 | command-line matches. Returns its index in the option array, | |
1229 | negative on failure. Complications arise since some options can be | |
1230 | suffixed with an argument, and multiple complete matches can occur, | |
05e81724 NB |
1231 | e.g. -iwithprefix and -iwithprefixbefore. Moreover, we need to |
1232 | accept options beginning with -W that we do not recognise, but not | |
1233 | to swallow any subsequent command line argument; this is handled as | |
1234 | special cases in cpp_handle_option. */ | |
e23c0ba3 ZW |
1235 | static int |
1236 | parse_option (input) | |
1237 | const char *input; | |
1238 | { | |
1239 | unsigned int md, mn, mx; | |
1240 | size_t opt_len; | |
1241 | int comp; | |
1242 | ||
1243 | mn = 0; | |
1244 | mx = N_OPTS; | |
1245 | ||
1246 | while (mx > mn) | |
1247 | { | |
1248 | md = (mn + mx) / 2; | |
ae79697b | 1249 | |
e23c0ba3 | 1250 | opt_len = cl_options[md].opt_len; |
61d0346d | 1251 | comp = memcmp (input, cl_options[md].opt_text, opt_len); |
ae79697b | 1252 | |
e23c0ba3 ZW |
1253 | if (comp > 0) |
1254 | mn = md + 1; | |
1255 | else if (comp < 0) | |
1256 | mx = md; | |
1257 | else | |
1258 | { | |
1259 | if (input[opt_len] == '\0') | |
1260 | return md; | |
1261 | /* We were passed more text. If the option takes an argument, | |
1262 | we may match a later option or we may have been passed the | |
1263 | argument. The longest possible option match succeeds. | |
1264 | If the option takes no arguments we have not matched and | |
4a58aab6 | 1265 | continue the search (e.g. input="stdc++" match was "stdc"). */ |
e23c0ba3 ZW |
1266 | mn = md + 1; |
1267 | if (cl_options[md].msg) | |
1268 | { | |
1269 | /* Scan forwards. If we get an exact match, return it. | |
1270 | Otherwise, return the longest option-accepting match. | |
4a58aab6 | 1271 | This loops no more than twice with current options. */ |
e23c0ba3 | 1272 | mx = md; |
37b8524c | 1273 | for (; mn < (unsigned int) N_OPTS; mn++) |
e23c0ba3 ZW |
1274 | { |
1275 | opt_len = cl_options[mn].opt_len; | |
61d0346d | 1276 | if (memcmp (input, cl_options[mn].opt_text, opt_len)) |
e23c0ba3 ZW |
1277 | break; |
1278 | if (input[opt_len] == '\0') | |
1279 | return mn; | |
1280 | if (cl_options[mn].msg) | |
1281 | mx = mn; | |
1282 | } | |
1283 | return mx; | |
1284 | } | |
1285 | } | |
1286 | } | |
1287 | ||
1288 | return -1; | |
1289 | } | |
1290 | ||
6de1e2a9 ZW |
1291 | /* Handle one command-line option in (argc, argv). |
1292 | Can be called multiple times, to handle multiple sets of options. | |
1293 | Returns number of strings consumed. */ | |
c8d8ed65 | 1294 | |
2c0accc9 ZW |
1295 | int |
1296 | cpp_handle_option (pfile, argc, argv) | |
6de1e2a9 ZW |
1297 | cpp_reader *pfile; |
1298 | int argc; | |
1299 | char **argv; | |
1300 | { | |
6de1e2a9 | 1301 | int i = 0; |
f8f769ea | 1302 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
6de1e2a9 | 1303 | |
373e2177 NB |
1304 | /* Interpret "-" or a non-option as a file name. */ |
1305 | if (argv[i][0] != '-' || argv[i][1] == '\0') | |
0b22d65c | 1306 | { |
373e2177 NB |
1307 | if (CPP_OPTION (pfile, in_fname) == NULL) |
1308 | CPP_OPTION (pfile, in_fname) = argv[i]; | |
1309 | else if (CPP_OPTION (pfile, out_fname) == NULL) | |
ae79697b | 1310 | CPP_OPTION (pfile, out_fname) = argv[i]; |
0b22d65c | 1311 | else |
373e2177 NB |
1312 | cpp_fatal (pfile, "Too many filenames. Type %s --help for usage info", |
1313 | progname); | |
0b22d65c ZW |
1314 | } |
1315 | else | |
e23c0ba3 ZW |
1316 | { |
1317 | enum opt_code opt_code; | |
1318 | int opt_index; | |
7ceb3598 | 1319 | const char *arg = 0; |
e23c0ba3 | 1320 | |
4a58aab6 | 1321 | /* Skip over '-'. */ |
e23c0ba3 ZW |
1322 | opt_index = parse_option (&argv[i][1]); |
1323 | if (opt_index < 0) | |
1324 | return i; | |
1325 | ||
1326 | opt_code = cl_options[opt_index].opt_code; | |
1327 | if (cl_options[opt_index].msg) | |
1328 | { | |
1329 | arg = &argv[i][cl_options[opt_index].opt_len + 1]; | |
1330 | ||
5c5d1ea0 | 1331 | /* Yuk. Special case for -W as it must not swallow |
e23c0ba3 | 1332 | up any following argument. If this becomes common, add |
4a58aab6 | 1333 | another field to the cl_options table. */ |
5c5d1ea0 | 1334 | if (arg[0] == '\0' && opt_code != OPT_W) |
e23c0ba3 ZW |
1335 | { |
1336 | arg = argv[++i]; | |
1337 | if (!arg) | |
1338 | { | |
d88b89e5 | 1339 | cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]); |
e23c0ba3 ZW |
1340 | return argc; |
1341 | } | |
1342 | } | |
1343 | } | |
ae79697b | 1344 | |
e23c0ba3 ZW |
1345 | switch (opt_code) |
1346 | { | |
4a58aab6 | 1347 | case N_OPTS: /* Shut GCC up. */ |
e23c0ba3 ZW |
1348 | break; |
1349 | case OPT_fleading_underscore: | |
771c4df3 | 1350 | CPP_OPTION (pfile, user_label_prefix) = "_"; |
e23c0ba3 ZW |
1351 | break; |
1352 | case OPT_fno_leading_underscore: | |
771c4df3 | 1353 | CPP_OPTION (pfile, user_label_prefix) = ""; |
e23c0ba3 | 1354 | break; |
be768055 JJ |
1355 | case OPT_fno_operator_names: |
1356 | CPP_OPTION (pfile, operator_names) = 0; | |
1357 | break; | |
e23c0ba3 | 1358 | case OPT_fpreprocessed: |
ae79697b | 1359 | CPP_OPTION (pfile, preprocessed) = 1; |
e23c0ba3 ZW |
1360 | break; |
1361 | case OPT_fno_preprocessed: | |
ae79697b ZW |
1362 | CPP_OPTION (pfile, preprocessed) = 0; |
1363 | break; | |
1364 | case OPT_fshow_column: | |
1365 | CPP_OPTION (pfile, show_column) = 1; | |
1366 | break; | |
1367 | case OPT_fno_show_column: | |
1368 | CPP_OPTION (pfile, show_column) = 0; | |
e23c0ba3 | 1369 | break; |
6ab3e7dd NB |
1370 | case OPT_ftabstop: |
1371 | /* Silently ignore empty string, non-longs and silly values. */ | |
1372 | if (arg[0] != '\0') | |
1373 | { | |
1374 | char *endptr; | |
1375 | long tabstop = strtol (arg, &endptr, 10); | |
1376 | if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100) | |
1377 | CPP_OPTION (pfile, tabstop) = tabstop; | |
1378 | } | |
1379 | break; | |
e23c0ba3 | 1380 | case OPT_w: |
ae79697b | 1381 | CPP_OPTION (pfile, inhibit_warnings) = 1; |
e23c0ba3 | 1382 | break; |
e23c0ba3 ZW |
1383 | case OPT_h: |
1384 | case OPT__help: | |
1385 | print_help (); | |
7e96d768 | 1386 | CPP_OPTION (pfile, help_only) = 1; |
e23c0ba3 | 1387 | break; |
91606ce2 | 1388 | case OPT_target__help: |
f4cdc368 ZW |
1389 | /* Print if any target specific options. cpplib has none, but |
1390 | make sure help_only gets set. */ | |
7e96d768 | 1391 | CPP_OPTION (pfile, help_only) = 1; |
91606ce2 | 1392 | break; |
f4cdc368 ZW |
1393 | |
1394 | /* --version inhibits compilation, -version doesn't. -v means | |
1395 | verbose and -version. Historical reasons, don't ask. */ | |
e23c0ba3 | 1396 | case OPT__version: |
7e96d768 | 1397 | CPP_OPTION (pfile, help_only) = 1; |
cb773845 ZW |
1398 | pfile->print_version = 1; |
1399 | break; | |
f4cdc368 ZW |
1400 | case OPT_v: |
1401 | CPP_OPTION (pfile, verbose) = 1; | |
cb773845 ZW |
1402 | pfile->print_version = 1; |
1403 | break; | |
f4cdc368 | 1404 | case OPT_version: |
cb773845 | 1405 | pfile->print_version = 1; |
e23c0ba3 | 1406 | break; |
f4cdc368 | 1407 | |
e23c0ba3 | 1408 | case OPT_C: |
ae79697b | 1409 | CPP_OPTION (pfile, discard_comments) = 0; |
e23c0ba3 ZW |
1410 | break; |
1411 | case OPT_P: | |
ae79697b | 1412 | CPP_OPTION (pfile, no_line_commands) = 1; |
e23c0ba3 | 1413 | break; |
4a58aab6 | 1414 | case OPT_dollar: /* Don't include $ in identifiers. */ |
ae79697b | 1415 | CPP_OPTION (pfile, dollars_in_ident) = 0; |
e23c0ba3 ZW |
1416 | break; |
1417 | case OPT_H: | |
ae79697b | 1418 | CPP_OPTION (pfile, print_include_names) = 1; |
e23c0ba3 ZW |
1419 | break; |
1420 | case OPT_D: | |
f8f769ea | 1421 | new_pending_directive (pend, arg, cpp_define); |
e23c0ba3 ZW |
1422 | break; |
1423 | case OPT_pedantic_errors: | |
ae79697b | 1424 | CPP_OPTION (pfile, pedantic_errors) = 1; |
e23c0ba3 ZW |
1425 | /* fall through */ |
1426 | case OPT_pedantic: | |
ae79697b | 1427 | CPP_OPTION (pfile, pedantic) = 1; |
e23c0ba3 | 1428 | break; |
e23c0ba3 | 1429 | case OPT_trigraphs: |
ae79697b | 1430 | CPP_OPTION (pfile, trigraphs) = 1; |
e23c0ba3 ZW |
1431 | break; |
1432 | case OPT_plus: | |
ae79697b ZW |
1433 | CPP_OPTION (pfile, cplusplus) = 1; |
1434 | CPP_OPTION (pfile, cplusplus_comments) = 1; | |
e23c0ba3 ZW |
1435 | break; |
1436 | case OPT_remap: | |
ae79697b | 1437 | CPP_OPTION (pfile, remap) = 1; |
e23c0ba3 ZW |
1438 | break; |
1439 | case OPT_iprefix: | |
ae79697b ZW |
1440 | CPP_OPTION (pfile, include_prefix) = arg; |
1441 | CPP_OPTION (pfile, include_prefix_len) = strlen (arg); | |
e23c0ba3 ZW |
1442 | break; |
1443 | case OPT_lang_c: | |
dd07b884 | 1444 | set_lang (pfile, CLK_GNUC89); |
e23c0ba3 | 1445 | break; |
e23c0ba3 | 1446 | case OPT_lang_cplusplus: |
dd07b884 | 1447 | set_lang (pfile, CLK_GNUCXX); |
e23c0ba3 | 1448 | break; |
f8f769ea | 1449 | case OPT_lang_objc: |
dd07b884 | 1450 | set_lang (pfile, CLK_OBJC); |
e23c0ba3 | 1451 | break; |
dd07b884 NB |
1452 | case OPT_lang_objcplusplus: |
1453 | set_lang (pfile, CLK_OBJCXX); | |
e23c0ba3 | 1454 | break; |
dd07b884 NB |
1455 | case OPT_lang_asm: |
1456 | set_lang (pfile, CLK_ASM); | |
e23c0ba3 | 1457 | break; |
dd07b884 NB |
1458 | case OPT_std_cplusplus98: |
1459 | set_lang (pfile, CLK_CXX98); | |
e23c0ba3 ZW |
1460 | break; |
1461 | case OPT_std_gnu89: | |
dd07b884 | 1462 | set_lang (pfile, CLK_GNUC89); |
e23c0ba3 ZW |
1463 | break; |
1464 | case OPT_std_gnu9x: | |
1465 | case OPT_std_gnu99: | |
dd07b884 | 1466 | set_lang (pfile, CLK_GNUC99); |
e23c0ba3 ZW |
1467 | break; |
1468 | case OPT_std_iso9899_199409: | |
dd07b884 NB |
1469 | set_lang (pfile, CLK_STDC94); |
1470 | break; | |
e23c0ba3 ZW |
1471 | case OPT_std_iso9899_1990: |
1472 | case OPT_std_c89: | |
9b55f29a | 1473 | case OPT_lang_c89: |
dd07b884 | 1474 | set_lang (pfile, CLK_STDC89); |
e23c0ba3 ZW |
1475 | break; |
1476 | case OPT_std_iso9899_199x: | |
1477 | case OPT_std_iso9899_1999: | |
1478 | case OPT_std_c9x: | |
1479 | case OPT_std_c99: | |
dd07b884 NB |
1480 | set_lang (pfile, CLK_STDC99); |
1481 | break; | |
1482 | case OPT_nostdinc: | |
1483 | /* -nostdinc causes no default include directories. | |
1484 | You must specify all include-file directories with -I. */ | |
1485 | CPP_OPTION (pfile, no_standard_includes) = 1; | |
1486 | break; | |
1487 | case OPT_nostdincplusplus: | |
ec5c56db | 1488 | /* -nostdinc++ causes no default C++-specific include directories. */ |
dd07b884 | 1489 | CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1; |
e23c0ba3 ZW |
1490 | break; |
1491 | case OPT_o: | |
373e2177 NB |
1492 | if (CPP_OPTION (pfile, out_fname) == NULL) |
1493 | CPP_OPTION (pfile, out_fname) = arg; | |
1494 | else | |
0b22d65c | 1495 | { |
e23c0ba3 ZW |
1496 | cpp_fatal (pfile, "Output filename specified twice"); |
1497 | return argc; | |
1498 | } | |
e23c0ba3 ZW |
1499 | break; |
1500 | case OPT_d: | |
1501 | /* Args to -d specify what parts of macros to dump. | |
1502 | Silently ignore unrecognised options; they may | |
4a58aab6 | 1503 | be aimed at the compiler proper. */ |
e23c0ba3 ZW |
1504 | { |
1505 | char c; | |
ae79697b | 1506 | |
e23c0ba3 ZW |
1507 | while ((c = *arg++) != '\0') |
1508 | switch (c) | |
1509 | { | |
1510 | case 'M': | |
ae79697b ZW |
1511 | CPP_OPTION (pfile, dump_macros) = dump_only; |
1512 | CPP_OPTION (pfile, no_output) = 1; | |
0b22d65c ZW |
1513 | break; |
1514 | case 'N': | |
ae79697b | 1515 | CPP_OPTION (pfile, dump_macros) = dump_names; |
0b22d65c ZW |
1516 | break; |
1517 | case 'D': | |
ae79697b | 1518 | CPP_OPTION (pfile, dump_macros) = dump_definitions; |
0b22d65c ZW |
1519 | break; |
1520 | case 'I': | |
ae79697b | 1521 | CPP_OPTION (pfile, dump_includes) = 1; |
0b22d65c ZW |
1522 | break; |
1523 | } | |
e23c0ba3 ZW |
1524 | } |
1525 | break; | |
96302433 | 1526 | |
e23c0ba3 | 1527 | case OPT_MG: |
ae79697b | 1528 | CPP_OPTION (pfile, print_deps_missing_files) = 1; |
e23c0ba3 ZW |
1529 | break; |
1530 | case OPT_M: | |
96302433 NB |
1531 | CPP_OPTION (pfile, print_deps) = 2; |
1532 | break; | |
e23c0ba3 | 1533 | case OPT_MM: |
96302433 | 1534 | CPP_OPTION (pfile, print_deps) = 1; |
e23c0ba3 | 1535 | break; |
96302433 NB |
1536 | case OPT_MF: |
1537 | CPP_OPTION (pfile, deps_file) = arg; | |
1538 | break; | |
1539 | case OPT_MP: | |
a5a4ce3c NB |
1540 | CPP_OPTION (pfile, deps_phony_targets) = 1; |
1541 | break; | |
f7114e17 | 1542 | case OPT_MQ: |
03b9ab42 | 1543 | case OPT_MT: |
f7114e17 NB |
1544 | /* Add a target. -MQ quotes for Make. */ |
1545 | deps_add_target (pfile->deps, arg, opt_code == OPT_MQ); | |
03b9ab42 NB |
1546 | break; |
1547 | ||
e582248c NB |
1548 | /* -MD and -MMD for cpp0 are deprecated and undocumented |
1549 | (use -M or -MM with -MF instead), and probably should be | |
1550 | removed with the next major GCC version. For the moment | |
1551 | we allow these for the benefit of Automake 1.4, which | |
1552 | uses these when dependency tracking is enabled. Automake | |
1553 | 1.5 will fix this. */ | |
1554 | case OPT_MD: | |
1555 | CPP_OPTION (pfile, print_deps) = 2; | |
1556 | CPP_OPTION (pfile, deps_file) = arg; | |
1557 | break; | |
1558 | case OPT_MMD: | |
1559 | CPP_OPTION (pfile, print_deps) = 1; | |
1560 | CPP_OPTION (pfile, deps_file) = arg; | |
1561 | break; | |
1562 | ||
e23c0ba3 | 1563 | case OPT_A: |
e1e97c4f | 1564 | if (arg[0] == '-') |
0b22d65c | 1565 | { |
e1e97c4f NB |
1566 | /* -A with an argument beginning with '-' acts as |
1567 | #unassert on whatever immediately follows the '-'. | |
1568 | If "-" is the whole argument, we eliminate all | |
1569 | predefined macros and assertions, including those | |
1570 | that were specified earlier on the command line. | |
1571 | That way we can get rid of any that were passed | |
1572 | automatically in from GCC. */ | |
1573 | ||
1574 | if (arg[1] == '\0') | |
0b22d65c | 1575 | { |
29401c30 | 1576 | free_chain (pend->directive_head); |
e33f6253 NB |
1577 | pend->directive_head = NULL; |
1578 | pend->directive_tail = NULL; | |
0b22d65c | 1579 | } |
e1e97c4f | 1580 | else |
e33f6253 | 1581 | new_pending_directive (pend, arg + 1, cpp_unassert); |
6de1e2a9 | 1582 | } |
e1e97c4f | 1583 | else |
e33f6253 | 1584 | new_pending_directive (pend, arg, cpp_assert); |
e23c0ba3 ZW |
1585 | break; |
1586 | case OPT_U: | |
e33f6253 | 1587 | new_pending_directive (pend, arg, cpp_undef); |
e23c0ba3 ZW |
1588 | break; |
1589 | case OPT_I: /* Add directory to path for includes. */ | |
1590 | if (!strcmp (arg, "-")) | |
1591 | { | |
1592 | /* -I- means: | |
1593 | Use the preceding -I directories for #include "..." | |
1594 | but not #include <...>. | |
1595 | Don't search the directory of the present file | |
1596 | for #include "...". (Note that -I. -I- is not the same as | |
1597 | the default setup; -I. uses the compiler's working dir.) */ | |
ae79697b | 1598 | if (! CPP_OPTION (pfile, ignore_srcdir)) |
e23c0ba3 | 1599 | { |
ae79697b ZW |
1600 | pend->quote_head = pend->brack_head; |
1601 | pend->quote_tail = pend->brack_tail; | |
1602 | pend->brack_head = 0; | |
1603 | pend->brack_tail = 0; | |
1604 | CPP_OPTION (pfile, ignore_srcdir) = 1; | |
e23c0ba3 ZW |
1605 | } |
1606 | else | |
1607 | { | |
1608 | cpp_fatal (pfile, "-I- specified twice"); | |
1609 | return argc; | |
1610 | } | |
1611 | } | |
1612 | else | |
e33f6253 | 1613 | append_include_chain (pfile, xstrdup (arg), BRACKET, 0); |
e23c0ba3 ZW |
1614 | break; |
1615 | case OPT_isystem: | |
1616 | /* Add directory to beginning of system include path, as a system | |
4a58aab6 | 1617 | include directory. */ |
e33f6253 | 1618 | append_include_chain (pfile, xstrdup (arg), SYSTEM, 0); |
e23c0ba3 ZW |
1619 | break; |
1620 | case OPT_include: | |
e23c0ba3 ZW |
1621 | case OPT_imacros: |
1622 | { | |
1623 | struct pending_option *o = (struct pending_option *) | |
1624 | xmalloc (sizeof (struct pending_option)); | |
1625 | o->arg = arg; | |
1626 | o->next = NULL; | |
ae79697b | 1627 | |
d7bc7a98 NB |
1628 | if (opt_code == OPT_include) |
1629 | APPEND (pend, include, o); | |
1630 | else | |
1631 | APPEND (pend, imacros, o); | |
e23c0ba3 ZW |
1632 | } |
1633 | break; | |
1634 | case OPT_iwithprefix: | |
1635 | /* Add directory to end of path for includes, | |
1636 | with the default prefix at the front of its name. */ | |
1637 | /* fall through */ | |
1638 | case OPT_iwithprefixbefore: | |
1639 | /* Add directory to main path for includes, | |
1640 | with the default prefix at the front of its name. */ | |
1641 | { | |
1642 | char *fname; | |
1643 | int len; | |
ae79697b | 1644 | |
e23c0ba3 | 1645 | len = strlen (arg); |
ae79697b ZW |
1646 | |
1647 | if (CPP_OPTION (pfile, include_prefix) != 0) | |
e23c0ba3 | 1648 | { |
ae79697b ZW |
1649 | size_t ipl = CPP_OPTION (pfile, include_prefix_len); |
1650 | fname = xmalloc (ipl + len + 1); | |
1651 | memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl); | |
1652 | memcpy (fname + ipl, arg, len + 1); | |
e23c0ba3 | 1653 | } |
60893f43 | 1654 | else if (cpp_GCC_INCLUDE_DIR_len) |
e23c0ba3 | 1655 | { |
60893f43 ZW |
1656 | fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1); |
1657 | memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len); | |
1658 | memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1); | |
e23c0ba3 | 1659 | } |
60893f43 ZW |
1660 | else |
1661 | fname = xstrdup (arg); | |
ae79697b | 1662 | |
e33f6253 | 1663 | append_include_chain (pfile, fname, |
e23c0ba3 ZW |
1664 | opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0); |
1665 | } | |
1666 | break; | |
1667 | case OPT_idirafter: | |
1668 | /* Add directory to end of path for includes. */ | |
e33f6253 | 1669 | append_include_chain (pfile, xstrdup (arg), AFTER, 0); |
e23c0ba3 ZW |
1670 | break; |
1671 | case OPT_W: | |
4a58aab6 | 1672 | /* Silently ignore unrecognised options. */ |
e23c0ba3 | 1673 | if (!strcmp (argv[i], "-Wall")) |
0b22d65c | 1674 | { |
ae79697b ZW |
1675 | CPP_OPTION (pfile, warn_trigraphs) = 1; |
1676 | CPP_OPTION (pfile, warn_comments) = 1; | |
0b22d65c | 1677 | } |
e23c0ba3 | 1678 | else if (!strcmp (argv[i], "-Wtraditional")) |
07aa0b04 | 1679 | CPP_OPTION (pfile, warn_traditional) = 1; |
e23c0ba3 | 1680 | else if (!strcmp (argv[i], "-Wtrigraphs")) |
ae79697b | 1681 | CPP_OPTION (pfile, warn_trigraphs) = 1; |
e23c0ba3 | 1682 | else if (!strcmp (argv[i], "-Wcomment")) |
ae79697b | 1683 | CPP_OPTION (pfile, warn_comments) = 1; |
e23c0ba3 | 1684 | else if (!strcmp (argv[i], "-Wcomments")) |
ae79697b | 1685 | CPP_OPTION (pfile, warn_comments) = 1; |
e23c0ba3 | 1686 | else if (!strcmp (argv[i], "-Wundef")) |
ae79697b | 1687 | CPP_OPTION (pfile, warn_undef) = 1; |
e23c0ba3 | 1688 | else if (!strcmp (argv[i], "-Wimport")) |
ae79697b | 1689 | CPP_OPTION (pfile, warn_import) = 1; |
e23c0ba3 | 1690 | else if (!strcmp (argv[i], "-Werror")) |
ae79697b | 1691 | CPP_OPTION (pfile, warnings_are_errors) = 1; |
317639a8 BC |
1692 | else if (!strcmp (argv[i], "-Wsystem-headers")) |
1693 | CPP_OPTION (pfile, warn_system_headers) = 1; | |
e23c0ba3 | 1694 | else if (!strcmp (argv[i], "-Wno-traditional")) |
07aa0b04 | 1695 | CPP_OPTION (pfile, warn_traditional) = 0; |
e23c0ba3 | 1696 | else if (!strcmp (argv[i], "-Wno-trigraphs")) |
ae79697b | 1697 | CPP_OPTION (pfile, warn_trigraphs) = 0; |
e23c0ba3 | 1698 | else if (!strcmp (argv[i], "-Wno-comment")) |
ae79697b | 1699 | CPP_OPTION (pfile, warn_comments) = 0; |
e23c0ba3 | 1700 | else if (!strcmp (argv[i], "-Wno-comments")) |
ae79697b | 1701 | CPP_OPTION (pfile, warn_comments) = 0; |
e23c0ba3 | 1702 | else if (!strcmp (argv[i], "-Wno-undef")) |
ae79697b | 1703 | CPP_OPTION (pfile, warn_undef) = 0; |
e23c0ba3 | 1704 | else if (!strcmp (argv[i], "-Wno-import")) |
ae79697b | 1705 | CPP_OPTION (pfile, warn_import) = 0; |
e23c0ba3 | 1706 | else if (!strcmp (argv[i], "-Wno-error")) |
ae79697b | 1707 | CPP_OPTION (pfile, warnings_are_errors) = 0; |
317639a8 BC |
1708 | else if (!strcmp (argv[i], "-Wno-system-headers")) |
1709 | CPP_OPTION (pfile, warn_system_headers) = 0; | |
e23c0ba3 ZW |
1710 | break; |
1711 | } | |
1712 | } | |
6de1e2a9 | 1713 | return i + 1; |
e23c0ba3 | 1714 | } |
0b22d65c | 1715 | |
6de1e2a9 ZW |
1716 | /* Handle command-line options in (argc, argv). |
1717 | Can be called multiple times, to handle multiple sets of options. | |
1718 | Returns if an unrecognized option is seen. | |
1719 | Returns number of strings consumed. */ | |
6de1e2a9 ZW |
1720 | int |
1721 | cpp_handle_options (pfile, argc, argv) | |
1722 | cpp_reader *pfile; | |
1723 | int argc; | |
1724 | char **argv; | |
1725 | { | |
1726 | int i; | |
1727 | int strings_processed; | |
e23c0ba3 | 1728 | |
6de1e2a9 ZW |
1729 | for (i = 0; i < argc; i += strings_processed) |
1730 | { | |
2c0accc9 | 1731 | strings_processed = cpp_handle_option (pfile, argc - i, argv + i); |
6de1e2a9 ZW |
1732 | if (strings_processed == 0) |
1733 | break; | |
1734 | } | |
96302433 | 1735 | |
6de1e2a9 ZW |
1736 | return i; |
1737 | } | |
1738 | ||
96302433 NB |
1739 | /* Extra processing when all options are parsed, after all calls to |
1740 | cpp_handle_option[s]. Consistency checks etc. */ | |
1741 | void | |
1742 | cpp_post_options (pfile) | |
1743 | cpp_reader *pfile; | |
1744 | { | |
cb773845 ZW |
1745 | if (pfile->print_version) |
1746 | { | |
1747 | fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string); | |
1748 | #ifdef TARGET_VERSION | |
1749 | TARGET_VERSION; | |
1750 | #endif | |
1751 | fputc ('\n', stderr); | |
1752 | } | |
1753 | ||
373e2177 NB |
1754 | /* Canonicalize in_fname and out_fname. We guarantee they are not |
1755 | NULL, and that the empty string represents stdin / stdout. */ | |
1756 | if (CPP_OPTION (pfile, in_fname) == NULL | |
1757 | || !strcmp (CPP_OPTION (pfile, in_fname), "-")) | |
1758 | CPP_OPTION (pfile, in_fname) = ""; | |
1759 | ||
1760 | if (CPP_OPTION (pfile, out_fname) == NULL | |
1761 | || !strcmp (CPP_OPTION (pfile, out_fname), "-")) | |
1762 | CPP_OPTION (pfile, out_fname) = ""; | |
1763 | ||
96302433 NB |
1764 | /* -Wtraditional is not useful in C++ mode. */ |
1765 | if (CPP_OPTION (pfile, cplusplus)) | |
1766 | CPP_OPTION (pfile, warn_traditional) = 0; | |
1767 | ||
ec5c56db | 1768 | /* Set this if it hasn't been set already. */ |
96302433 NB |
1769 | if (CPP_OPTION (pfile, user_label_prefix) == NULL) |
1770 | CPP_OPTION (pfile, user_label_prefix) = USER_LABEL_PREFIX; | |
1771 | ||
6d4587f7 ZW |
1772 | /* Permanently disable macro expansion if we are rescanning |
1773 | preprocessed text. */ | |
1774 | if (CPP_OPTION (pfile, preprocessed)) | |
1775 | pfile->state.prevent_expansion = 1; | |
1776 | ||
96302433 NB |
1777 | /* We need to do this after option processing and before |
1778 | cpp_start_read, as cppmain.c relies on the options->no_output to | |
1779 | set its callbacks correctly before calling cpp_start_read. */ | |
1780 | init_dependency_output (pfile); | |
1781 | ||
e582248c NB |
1782 | /* After checking the environment variables, check if -M or -MM has |
1783 | not been specified, but other -M options have. */ | |
1784 | if (CPP_OPTION (pfile, print_deps) == 0 && | |
1785 | (CPP_OPTION (pfile, print_deps_missing_files) | |
1786 | || CPP_OPTION (pfile, deps_file) | |
1787 | || CPP_OPTION (pfile, deps_phony_targets))) | |
1788 | cpp_fatal (pfile, "you must additionally specify either -M or -MM"); | |
96302433 NB |
1789 | } |
1790 | ||
7ca3d2b1 NB |
1791 | /* Set up dependency-file output. */ |
1792 | static void | |
1793 | init_dependency_output (pfile) | |
1794 | cpp_reader *pfile; | |
1795 | { | |
1796 | char *spec, *s, *output_file; | |
1797 | ||
1798 | /* Either of two environment variables can specify output of deps. | |
1799 | Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET", | |
1800 | where OUTPUT_FILE is the file to write deps info to | |
1801 | and DEPS_TARGET is the target to mention in the deps. */ | |
1802 | ||
1803 | if (CPP_OPTION (pfile, print_deps) == 0) | |
1804 | { | |
1805 | spec = getenv ("DEPENDENCIES_OUTPUT"); | |
1806 | if (spec) | |
1807 | CPP_OPTION (pfile, print_deps) = 1; | |
1808 | else | |
1809 | { | |
1810 | spec = getenv ("SUNPRO_DEPENDENCIES"); | |
1811 | if (spec) | |
1812 | CPP_OPTION (pfile, print_deps) = 2; | |
1813 | else | |
1814 | return; | |
1815 | } | |
1816 | ||
1817 | /* Find the space before the DEPS_TARGET, if there is one. */ | |
1818 | s = strchr (spec, ' '); | |
1819 | if (s) | |
1820 | { | |
1821 | /* Let the caller perform MAKE quoting. */ | |
1822 | deps_add_target (pfile->deps, s + 1, 0); | |
1823 | output_file = (char *) xmalloc (s - spec + 1); | |
1824 | memcpy (output_file, spec, s - spec); | |
1825 | output_file[s - spec] = 0; | |
1826 | } | |
1827 | else | |
1828 | output_file = spec; | |
1829 | ||
96302433 NB |
1830 | /* Command line overrides environment variables. */ |
1831 | if (CPP_OPTION (pfile, deps_file) == 0) | |
1832 | CPP_OPTION (pfile, deps_file) = output_file; | |
7ca3d2b1 NB |
1833 | CPP_OPTION (pfile, print_deps_append) = 1; |
1834 | } | |
1835 | ||
e582248c | 1836 | /* If dependencies go to standard output, or -MG is used, we should |
df07e07d | 1837 | suppress output, including -dM, -dI etc. */ |
e582248c NB |
1838 | if (CPP_OPTION (pfile, deps_file) == 0 |
1839 | || CPP_OPTION (pfile, print_deps_missing_files)) | |
df07e07d NB |
1840 | { |
1841 | CPP_OPTION (pfile, no_output) = 1; | |
1842 | CPP_OPTION (pfile, dump_macros) = 0; | |
1843 | CPP_OPTION (pfile, dump_includes) = 0; | |
1844 | } | |
7ca3d2b1 NB |
1845 | } |
1846 | ||
6de1e2a9 ZW |
1847 | static void |
1848 | print_help () | |
1849 | { | |
c1212d2f | 1850 | fprintf (stderr, _("Usage: %s [switches] input output\n"), progname); |
aaaf7848 | 1851 | /* To keep the lines from getting too long for some compilers, limit |
ec5c56db | 1852 | to about 500 characters (6 lines) per chunk. */ |
6de1e2a9 ZW |
1853 | fputs (_("\ |
1854 | Switches:\n\ | |
1855 | -include <file> Include the contents of <file> before other files\n\ | |
1856 | -imacros <file> Accept definition of macros in <file>\n\ | |
1857 | -iprefix <path> Specify <path> as a prefix for next two options\n\ | |
1858 | -iwithprefix <dir> Add <dir> to the end of the system include path\n\ | |
1859 | -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\ | |
1860 | -isystem <dir> Add <dir> to the start of the system include path\n\ | |
aaaf7848 DT |
1861 | "), stdout); |
1862 | fputs (_("\ | |
6de1e2a9 ZW |
1863 | -idirafter <dir> Add <dir> to the end of the system include path\n\ |
1864 | -I <dir> Add <dir> to the end of the main include path\n\ | |
e23c0ba3 | 1865 | -I- Fine-grained include path control; see info docs\n\ |
6de1e2a9 ZW |
1866 | -nostdinc Do not search system include directories\n\ |
1867 | (dirs specified with -isystem will still be used)\n\ | |
1868 | -nostdinc++ Do not search system include directories for C++\n\ | |
1869 | -o <file> Put output into <file>\n\ | |
aaaf7848 DT |
1870 | "), stdout); |
1871 | fputs (_("\ | |
041c3194 | 1872 | -pedantic Issue all warnings demanded by strict ISO C\n\ |
e23c0ba3 | 1873 | -pedantic-errors Issue -pedantic warnings as errors instead\n\ |
041c3194 | 1874 | -trigraphs Support ISO C trigraphs\n\ |
6de1e2a9 ZW |
1875 | -lang-c Assume that the input sources are in C\n\ |
1876 | -lang-c89 Assume that the input sources are in C89\n\ | |
aaaf7848 DT |
1877 | "), stdout); |
1878 | fputs (_("\ | |
f9a0e96c | 1879 | -lang-c++ Assume that the input sources are in C++\n\ |
6de1e2a9 ZW |
1880 | -lang-objc Assume that the input sources are in ObjectiveC\n\ |
1881 | -lang-objc++ Assume that the input sources are in ObjectiveC++\n\ | |
1882 | -lang-asm Assume that the input sources are in assembler\n\ | |
aaaf7848 DT |
1883 | "), stdout); |
1884 | fputs (_("\ | |
6de1e2a9 | 1885 | -std=<std name> Specify the conformance standard; one of:\n\ |
916269ab UD |
1886 | gnu89, gnu99, c89, c99, iso9899:1990,\n\ |
1887 | iso9899:199409, iso9899:1999\n\ | |
6de1e2a9 ZW |
1888 | -+ Allow parsing of C++ style features\n\ |
1889 | -w Inhibit warning messages\n\ | |
1890 | -Wtrigraphs Warn if trigraphs are encountered\n\ | |
1891 | -Wno-trigraphs Do not warn about trigraphs\n\ | |
1892 | -Wcomment{s} Warn if one comment starts inside another\n\ | |
aaaf7848 DT |
1893 | "), stdout); |
1894 | fputs (_("\ | |
6de1e2a9 | 1895 | -Wno-comment{s} Do not warn about comments\n\ |
f9a0e96c ZW |
1896 | -Wtraditional Warn about features not present in traditional C\n\ |
1897 | -Wno-traditional Do not warn about traditional C\n\ | |
6de1e2a9 ZW |
1898 | -Wundef Warn if an undefined macro is used by #if\n\ |
1899 | -Wno-undef Do not warn about testing undefined macros\n\ | |
1900 | -Wimport Warn about the use of the #import directive\n\ | |
aaaf7848 DT |
1901 | "), stdout); |
1902 | fputs (_("\ | |
6de1e2a9 ZW |
1903 | -Wno-import Do not warn about the use of #import\n\ |
1904 | -Werror Treat all warnings as errors\n\ | |
1905 | -Wno-error Do not treat warnings as errors\n\ | |
317639a8 BC |
1906 | -Wsystem-headers Do not suppress warnings from system headers\n\ |
1907 | -Wno-system-headers Suppress warnings from system headers\n\ | |
6de1e2a9 | 1908 | -Wall Enable all preprocessor warnings\n\ |
aaaf7848 DT |
1909 | "), stdout); |
1910 | fputs (_("\ | |
317639a8 BC |
1911 | -M Generate make dependencies\n\ |
1912 | -MM As -M, but ignore system header files\n\ | |
96302433 | 1913 | -MF <file> Write dependency output to the given file\n\ |
6de1e2a9 | 1914 | -MG Treat missing header file as generated files\n\ |
96302433 NB |
1915 | "), stdout); |
1916 | fputs (_("\ | |
1917 | -MP Generate phony targets for all headers\n\ | |
1918 | -MQ <target> Add a MAKE-quoted target\n\ | |
1919 | -MT <target> Add an unquoted target\n\ | |
aaaf7848 DT |
1920 | "), stdout); |
1921 | fputs (_("\ | |
317639a8 BC |
1922 | -D<macro> Define a <macro> with string '1' as its value\n\ |
1923 | -D<macro>=<val> Define a <macro> with <val> as its value\n\ | |
6de1e2a9 | 1924 | -A<question> (<answer>) Assert the <answer> to <question>\n\ |
e1e97c4f | 1925 | -A-<question> (<answer>) Disable the <answer> to <question>\n\ |
6de1e2a9 | 1926 | -U<macro> Undefine <macro> \n\ |
6de1e2a9 | 1927 | -v Display the version number\n\ |
aaaf7848 DT |
1928 | "), stdout); |
1929 | fputs (_("\ | |
317639a8 BC |
1930 | -H Print the name of header files as they are used\n\ |
1931 | -C Do not discard comments\n\ | |
6de1e2a9 ZW |
1932 | -dM Display a list of macro definitions active at end\n\ |
1933 | -dD Preserve macro definitions in output\n\ | |
1934 | -dN As -dD except that only the names are preserved\n\ | |
1935 | -dI Include #include directives in the output\n\ | |
317639a8 BC |
1936 | "), stdout); |
1937 | fputs (_("\ | |
3bce8a01 | 1938 | -fpreprocessed Treat the input file as already preprocessed\n\ |
6ab3e7dd | 1939 | -ftabstop=<number> Distance between tab stops for column reporting\n\ |
6de1e2a9 ZW |
1940 | -P Do not generate #line directives\n\ |
1941 | -$ Do not allow '$' in identifiers\n\ | |
1942 | -remap Remap file names when including files.\n\ | |
e23c0ba3 | 1943 | --version Display version information\n\ |
6de1e2a9 ZW |
1944 | -h or --help Display this information\n\ |
1945 | "), stdout); | |
1946 | } |