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a852e3b1 | 1 | /* CPP Library. |
00059bc7 | 2 | Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
355a19c4 | 3 | 1999, 2000, 2001, 2002 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" | |
6d71dc85 | 26 | #include "prefix.h" |
27 | #include "intl.h" | |
56fc5f02 | 28 | #include "version.h" |
62adb1fe | 29 | #include "mkdeps.h" |
472679ed | 30 | #include "cppdefault.h" |
a1a7e9d5 | 31 | #include "except.h" /* for USING_SJLJ_EXCEPTIONS */ |
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. | |
2c0e001b | 41 | VMS has non-numeric inodes. */ |
1e8b9746 | 42 | #ifdef VMS |
5ec90c2e | 43 | # define INO_T_EQ(A, B) (!memcmp (&(A), &(B), sizeof (A))) |
44 | # define INO_T_COPY(DEST, SRC) memcpy(&(DEST), &(SRC), sizeof (SRC)) | |
1e8b9746 | 45 | #else |
ca68aa59 | 46 | # if (defined _WIN32 && ! defined (_UWIN)) || defined __MSDOS__ |
5ec90c2e | 47 | # define INO_T_EQ(A, B) 0 |
ca68aa59 | 48 | # else |
5ec90c2e | 49 | # define INO_T_EQ(A, B) ((A) == (B)) |
ca68aa59 | 50 | # endif |
5ec90c2e | 51 | # define INO_T_COPY(DEST, SRC) (DEST) = (SRC) |
1e8b9746 | 52 | #endif |
53 | ||
8d1752de | 54 | /* Internal structures and prototypes. */ |
6d71dc85 | 55 | |
8d1752de | 56 | /* A `struct pending_option' remembers one -D, -A, -U, -include, or |
57 | -imacros switch. */ | |
078aa0ff | 58 | typedef void (* cl_directive_handler) PARAMS ((cpp_reader *, const char *)); |
9fa36617 | 59 | struct pending_option |
6d71dc85 | 60 | { |
9fa36617 | 61 | struct pending_option *next; |
8d7a2585 | 62 | const char *arg; |
d73269b6 | 63 | cl_directive_handler handler; |
6d71dc85 | 64 | }; |
9fa36617 | 65 | |
1e8b9746 | 66 | /* The `pending' structure accumulates all the options that are not |
9ceb1c29 | 67 | actually processed until we hit cpp_read_main_file. It consists of |
1e8b9746 | 68 | several lists, one for each type of option. We keep both head and |
8d1752de | 69 | tail pointers for quick insertion. */ |
1e8b9746 | 70 | struct cpp_pending |
71 | { | |
d73269b6 | 72 | struct pending_option *directive_head, *directive_tail; |
1e8b9746 | 73 | |
3ec84a0b | 74 | struct search_path *quote_head, *quote_tail; |
75 | struct search_path *brack_head, *brack_tail; | |
76 | struct search_path *systm_head, *systm_tail; | |
77 | struct search_path *after_head, *after_tail; | |
1e8b9746 | 78 | |
79 | struct pending_option *imacros_head, *imacros_tail; | |
80 | struct pending_option *include_head, *include_tail; | |
81 | }; | |
82 | ||
9fa36617 | 83 | #ifdef __STDC__ |
84 | #define APPEND(pend, list, elt) \ | |
85 | do { if (!(pend)->list##_head) (pend)->list##_head = (elt); \ | |
86 | else (pend)->list##_tail->next = (elt); \ | |
87 | (pend)->list##_tail = (elt); \ | |
88 | } while (0) | |
89 | #else | |
90 | #define APPEND(pend, list, elt) \ | |
91 | do { if (!(pend)->list/**/_head) (pend)->list/**/_head = (elt); \ | |
92 | else (pend)->list/**/_tail->next = (elt); \ | |
93 | (pend)->list/**/_tail = (elt); \ | |
94 | } while (0) | |
95 | #endif | |
6d71dc85 | 96 | |
6d71dc85 | 97 | static void print_help PARAMS ((void)); |
9fa36617 | 98 | static void path_include PARAMS ((cpp_reader *, |
9fa36617 | 99 | char *, int)); |
c77d825d | 100 | static void init_library PARAMS ((void)); |
b3a8144e | 101 | static void init_builtins PARAMS ((cpp_reader *)); |
9fa36617 | 102 | static void append_include_chain PARAMS ((cpp_reader *, |
d2e850c1 | 103 | char *, int, int)); |
72ac7d9a | 104 | static struct search_path * remove_dup_dir PARAMS ((cpp_reader *, |
3ec84a0b | 105 | struct search_path *)); |
72ac7d9a | 106 | static struct search_path * remove_dup_dirs PARAMS ((cpp_reader *, |
3ec84a0b | 107 | struct search_path *)); |
2ff3ad1d | 108 | static void merge_include_chains PARAMS ((cpp_reader *)); |
fe560637 | 109 | static bool push_include PARAMS ((cpp_reader *, |
110 | struct pending_option *)); | |
111 | static void free_chain PARAMS ((struct pending_option *)); | |
fad0ffbb | 112 | static void set_lang PARAMS ((cpp_reader *, enum c_lang)); |
b3a8144e | 113 | static void init_dependency_output PARAMS ((cpp_reader *)); |
114 | static void init_standard_includes PARAMS ((cpp_reader *)); | |
9ceb1c29 | 115 | static void read_original_filename PARAMS ((cpp_reader *)); |
dfa5c7fa | 116 | static void new_pending_directive PARAMS ((struct cpp_pending *, |
d73269b6 | 117 | const char *, |
118 | cl_directive_handler)); | |
b3a8144e | 119 | static void output_deps PARAMS ((cpp_reader *)); |
bcc40c63 | 120 | static int parse_option PARAMS ((const char *)); |
6d71dc85 | 121 | |
a19b9668 | 122 | /* Fourth argument to append_include_chain: chain to use. |
123 | Note it's never asked to append to the quote chain. */ | |
124 | enum { BRACKET = 0, SYSTEM, AFTER }; | |
6d71dc85 | 125 | |
b3954366 | 126 | /* If we have designated initializers (GCC >2.7) these tables can be |
127 | initialized, constant data. Otherwise, they have to be filled in at | |
e057cf7c | 128 | runtime. */ |
b3954366 | 129 | #if HAVE_DESIGNATED_INITIALIZERS |
5ba37007 | 130 | |
8d1752de | 131 | #define init_trigraph_map() /* Nothing. */ |
b3954366 | 132 | #define TRIGRAPH_MAP \ |
133 | __extension__ const U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = { | |
134 | ||
5ba37007 | 135 | #define END }; |
4f98874d | 136 | #define s(p, v) [p] = v, |
b3954366 | 137 | |
5ba37007 | 138 | #else |
b3954366 | 139 | |
b3954366 | 140 | #define TRIGRAPH_MAP U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = { 0 }; \ |
141 | static void init_trigraph_map PARAMS ((void)) { \ | |
142 | unsigned char *x = _cpp_trigraph_map; | |
143 | ||
2ff3ad1d | 144 | #define END } |
4f98874d | 145 | #define s(p, v) x[p] = v; |
b3954366 | 146 | |
5ba37007 | 147 | #endif |
6d71dc85 | 148 | |
b3954366 | 149 | TRIGRAPH_MAP |
150 | s('=', '#') s(')', ']') s('!', '|') | |
151 | s('(', '[') s('\'', '^') s('>', '}') | |
152 | s('/', '\\') s('<', '{') s('-', '~') | |
153 | END | |
154 | ||
5ba37007 | 155 | #undef s |
4f98874d | 156 | #undef END |
b3954366 | 157 | #undef TRIGRAPH_MAP |
6d71dc85 | 158 | |
159 | /* Given a colon-separated list of file names PATH, | |
160 | add all the names to the search path for include files. */ | |
6d71dc85 | 161 | static void |
466b3f58 | 162 | path_include (pfile, list, path) |
6d71dc85 | 163 | cpp_reader *pfile; |
9fa36617 | 164 | char *list; |
165 | int path; | |
6d71dc85 | 166 | { |
9fa36617 | 167 | char *p, *q, *name; |
6d71dc85 | 168 | |
9fa36617 | 169 | p = list; |
6d71dc85 | 170 | |
9fa36617 | 171 | do |
172 | { | |
6d71dc85 | 173 | /* Find the end of this name. */ |
9fa36617 | 174 | q = p; |
6d71dc85 | 175 | while (*q != 0 && *q != PATH_SEPARATOR) q++; |
9fa36617 | 176 | if (q == p) |
177 | { | |
178 | /* An empty name in the path stands for the current directory. */ | |
179 | name = (char *) xmalloc (2); | |
180 | name[0] = '.'; | |
181 | name[1] = 0; | |
182 | } | |
183 | else | |
184 | { | |
185 | /* Otherwise use the directory that is named. */ | |
186 | name = (char *) xmalloc (q - p + 1); | |
187 | memcpy (name, p, q - p); | |
188 | name[q - p] = 0; | |
189 | } | |
6d71dc85 | 190 | |
466b3f58 | 191 | append_include_chain (pfile, name, path, 0); |
6d71dc85 | 192 | |
193 | /* Advance past this name. */ | |
9fa36617 | 194 | if (*q == 0) |
6d71dc85 | 195 | break; |
9fa36617 | 196 | p = q + 1; |
197 | } | |
198 | while (1); | |
199 | } | |
200 | ||
162cee98 | 201 | /* Append DIR to include path PATH. DIR must be allocated on the |
e484a1cc | 202 | heap; this routine takes responsibility for freeing it. CXX_AWARE |
203 | is non-zero if the header contains extern "C" guards for C++, | |
204 | otherwise it is zero. */ | |
9fa36617 | 205 | static void |
466b3f58 | 206 | append_include_chain (pfile, dir, path, cxx_aware) |
9fa36617 | 207 | cpp_reader *pfile; |
9fa36617 | 208 | char *dir; |
209 | int path; | |
2376a7f7 | 210 | int cxx_aware ATTRIBUTE_UNUSED; |
9fa36617 | 211 | { |
466b3f58 | 212 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
3ec84a0b | 213 | struct search_path *new; |
9fa36617 | 214 | struct stat st; |
215 | unsigned int len; | |
216 | ||
7eda354a | 217 | if (*dir == '\0') |
162cee98 | 218 | { |
219 | free (dir); | |
220 | dir = xstrdup ("."); | |
221 | } | |
94221a92 | 222 | _cpp_simplify_pathname (dir); |
162cee98 | 223 | |
9fa36617 | 224 | if (stat (dir, &st)) |
225 | { | |
7eda354a | 226 | /* Dirs that don't exist are silently ignored. */ |
9fa36617 | 227 | if (errno != ENOENT) |
9e87fa80 | 228 | cpp_notice_from_errno (pfile, dir); |
2ff3ad1d | 229 | else if (CPP_OPTION (pfile, verbose)) |
f80e83a9 | 230 | fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir); |
162cee98 | 231 | free (dir); |
9fa36617 | 232 | return; |
233 | } | |
234 | ||
235 | if (!S_ISDIR (st.st_mode)) | |
236 | { | |
9e87fa80 | 237 | cpp_notice (pfile, "%s: Not a directory", dir); |
162cee98 | 238 | free (dir); |
9fa36617 | 239 | return; |
240 | } | |
241 | ||
242 | len = strlen (dir); | |
243 | if (len > pfile->max_include_len) | |
244 | pfile->max_include_len = len; | |
2ff3ad1d | 245 | |
3ec84a0b | 246 | new = (struct search_path *) xmalloc (sizeof (struct search_path)); |
9fa36617 | 247 | new->name = dir; |
3ec84a0b | 248 | new->len = len; |
5ec90c2e | 249 | INO_T_COPY (new->ino, st.st_ino); |
9fa36617 | 250 | new->dev = st.st_dev; |
4dac543a | 251 | /* Both systm and after include file lists should be treated as system |
252 | include files since these two lists are really just a concatenation | |
2c0e001b | 253 | of one "system" list. */ |
4dac543a | 254 | if (path == SYSTEM || path == AFTER) |
3b44c686 | 255 | #ifdef NO_IMPLICIT_EXTERN_C |
256 | new->sysp = 1; | |
257 | #else | |
d2e850c1 | 258 | new->sysp = cxx_aware ? 1 : 2; |
3b44c686 | 259 | #endif |
d2e850c1 | 260 | else |
261 | new->sysp = 0; | |
9fa36617 | 262 | new->name_map = NULL; |
48f3f15c | 263 | new->next = NULL; |
9fa36617 | 264 | |
265 | switch (path) | |
266 | { | |
9fa36617 | 267 | case BRACKET: APPEND (pend, brack, new); break; |
268 | case SYSTEM: APPEND (pend, systm, new); break; | |
269 | case AFTER: APPEND (pend, after, new); break; | |
6d71dc85 | 270 | } |
271 | } | |
272 | ||
d1ad3794 | 273 | /* Handle a duplicated include path. PREV is the link in the chain |
274 | before the duplicate. The duplicate is removed from the chain and | |
275 | freed. Returns PREV. */ | |
72ac7d9a | 276 | static struct search_path * |
d1ad3794 | 277 | remove_dup_dir (pfile, prev) |
278 | cpp_reader *pfile; | |
3ec84a0b | 279 | struct search_path *prev; |
d1ad3794 | 280 | { |
3ec84a0b | 281 | struct search_path *cur = prev->next; |
d1ad3794 | 282 | |
283 | if (CPP_OPTION (pfile, verbose)) | |
284 | fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name); | |
285 | ||
286 | prev->next = cur->next; | |
3ec84a0b | 287 | free ((PTR) cur->name); |
d1ad3794 | 288 | free (cur); |
289 | ||
290 | return prev; | |
291 | } | |
292 | ||
293 | /* Remove duplicate directories from a chain. Returns the tail of the | |
294 | chain, or NULL if the chain is empty. This algorithm is quadratic | |
295 | in the number of -I switches, which is acceptable since there | |
296 | aren't usually that many of them. */ | |
72ac7d9a | 297 | static struct search_path * |
d1ad3794 | 298 | remove_dup_dirs (pfile, head) |
299 | cpp_reader *pfile; | |
3ec84a0b | 300 | struct search_path *head; |
d1ad3794 | 301 | { |
3ec84a0b | 302 | struct search_path *prev = NULL, *cur, *other; |
d1ad3794 | 303 | |
304 | for (cur = head; cur; cur = cur->next) | |
305 | { | |
306 | for (other = head; other != cur; other = other->next) | |
307 | if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev) | |
308 | { | |
72ac7d9a | 309 | if (cur->sysp && !other->sysp) |
83e21af4 | 310 | { |
311 | cpp_warning (pfile, | |
312 | "changing search order for system directory \"%s\"", | |
313 | cur->name); | |
314 | if (strcmp (cur->name, other->name)) | |
72ac7d9a | 315 | cpp_warning (pfile, |
316 | " as it is the same as non-system directory \"%s\"", | |
83e21af4 | 317 | other->name); |
318 | else | |
72ac7d9a | 319 | cpp_warning (pfile, |
320 | " as it has already been specified as a non-system directory"); | |
83e21af4 | 321 | } |
d1ad3794 | 322 | cur = remove_dup_dir (pfile, prev); |
323 | break; | |
324 | } | |
325 | prev = cur; | |
326 | } | |
327 | ||
328 | return prev; | |
329 | } | |
330 | ||
1e8b9746 | 331 | /* Merge the four include chains together in the order quote, bracket, |
332 | system, after. Remove duplicate dirs (as determined by | |
333 | INO_T_EQ()). The system_include and after_include chains are never | |
334 | referred to again after this function; all access is through the | |
e484a1cc | 335 | bracket_include path. */ |
1e8b9746 | 336 | static void |
2ff3ad1d | 337 | merge_include_chains (pfile) |
338 | cpp_reader *pfile; | |
1e8b9746 | 339 | { |
3ec84a0b | 340 | struct search_path *quote, *brack, *systm, *qtail; |
1e8b9746 | 341 | |
2ff3ad1d | 342 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
1e8b9746 | 343 | |
2ff3ad1d | 344 | quote = pend->quote_head; |
345 | brack = pend->brack_head; | |
346 | systm = pend->systm_head; | |
d1ad3794 | 347 | qtail = pend->quote_tail; |
1e8b9746 | 348 | |
d1ad3794 | 349 | /* Paste together bracket, system, and after include chains. */ |
350 | if (systm) | |
351 | pend->systm_tail->next = pend->after_head; | |
1e8b9746 | 352 | else |
d1ad3794 | 353 | systm = pend->after_head; |
354 | ||
355 | if (brack) | |
356 | pend->brack_tail->next = systm; | |
1e8b9746 | 357 | else |
358 | brack = systm; | |
359 | ||
d1ad3794 | 360 | /* This is a bit tricky. First we drop dupes from the quote-include |
361 | list. Then we drop dupes from the bracket-include list. | |
362 | Finally, if qtail and brack are the same directory, we cut out | |
a19b9668 | 363 | brack and move brack up to point to qtail. |
1e8b9746 | 364 | |
365 | We can't just merge the lists and then uniquify them because | |
366 | then we may lose directories from the <> search path that should | |
367 | be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however | |
368 | safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written | |
d1ad3794 | 369 | -Ibar -I- -Ifoo -Iquux. */ |
1e8b9746 | 370 | |
d1ad3794 | 371 | remove_dup_dirs (pfile, brack); |
372 | qtail = remove_dup_dirs (pfile, quote); | |
1e8b9746 | 373 | |
374 | if (quote) | |
375 | { | |
d1ad3794 | 376 | qtail->next = brack; |
377 | ||
378 | /* If brack == qtail, remove brack as it's simpler. */ | |
f7ee0e54 | 379 | if (brack && INO_T_EQ (qtail->ino, brack->ino) |
380 | && qtail->dev == brack->dev) | |
d1ad3794 | 381 | brack = remove_dup_dir (pfile, qtail); |
1e8b9746 | 382 | } |
383 | else | |
162cee98 | 384 | quote = brack; |
1e8b9746 | 385 | |
2ff3ad1d | 386 | CPP_OPTION (pfile, quote_include) = quote; |
387 | CPP_OPTION (pfile, bracket_include) = brack; | |
1e8b9746 | 388 | } |
389 | ||
e484a1cc | 390 | /* A set of booleans indicating what CPP features each source language |
391 | requires. */ | |
f48efcc3 | 392 | struct lang_flags |
393 | { | |
394 | char c99; | |
395 | char objc; | |
396 | char cplusplus; | |
397 | char extended_numbers; | |
398 | char trigraphs; | |
399 | char dollars_in_ident; | |
400 | char cplusplus_comments; | |
401 | char digraphs; | |
402 | }; | |
403 | ||
404 | /* ??? Enable $ in identifiers in assembly? */ | |
405 | static const struct lang_flags lang_defaults[] = | |
406 | { /* c99 objc c++ xnum trig dollar c++comm digr */ | |
407 | /* GNUC89 */ { 0, 0, 0, 1, 0, 1, 1, 1 }, | |
408 | /* GNUC99 */ { 1, 0, 0, 1, 0, 1, 1, 1 }, | |
409 | /* STDC89 */ { 0, 0, 0, 0, 1, 0, 0, 0 }, | |
410 | /* STDC94 */ { 0, 0, 0, 0, 1, 0, 0, 1 }, | |
411 | /* STDC99 */ { 1, 0, 0, 1, 1, 0, 1, 1 }, | |
412 | /* GNUCXX */ { 0, 0, 1, 1, 0, 1, 1, 1 }, | |
413 | /* CXX98 */ { 0, 0, 1, 1, 1, 0, 1, 1 }, | |
414 | /* OBJC */ { 0, 1, 0, 1, 0, 1, 1, 1 }, | |
415 | /* OBJCXX */ { 0, 1, 1, 1, 0, 1, 1, 1 }, | |
416 | /* ASM */ { 0, 0, 0, 1, 0, 0, 1, 0 } | |
417 | }; | |
418 | ||
e484a1cc | 419 | /* Sets internal flags correctly for a given language. */ |
fad0ffbb | 420 | static void |
421 | set_lang (pfile, lang) | |
422 | cpp_reader *pfile; | |
423 | enum c_lang lang; | |
424 | { | |
f48efcc3 | 425 | const struct lang_flags *l = &lang_defaults[(int) lang]; |
426 | ||
5db5d057 | 427 | CPP_OPTION (pfile, lang) = lang; |
fad0ffbb | 428 | |
f48efcc3 | 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; | |
fad0ffbb | 437 | } |
438 | ||
b3a8144e | 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 | |
9751c00e | 451 | |
b3a8144e | 452 | /* init initializes library global state. It might not need to |
453 | do anything depending on the platform and compiler. */ | |
9751c00e | 454 | static void |
c77d825d | 455 | init_library () |
9751c00e | 456 | { |
b3a8144e | 457 | static int initialized = 0; |
458 | ||
459 | if (! initialized) | |
460 | { | |
461 | initialized = 1; | |
462 | ||
9751c00e | 463 | #ifdef HOST_EBCDIC |
b3a8144e | 464 | /* For non-ASCII hosts, the cl_options array needs to be sorted at |
465 | runtime. */ | |
466 | qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp); | |
9751c00e | 467 | #endif |
468 | ||
b3a8144e | 469 | /* Set up the trigraph map. This doesn't need to do anything if |
470 | we were compiled with a compiler that supports C99 designated | |
471 | initializers. */ | |
472 | init_trigraph_map (); | |
473 | } | |
9751c00e | 474 | } |
475 | ||
2c0e001b | 476 | /* Initialize a cpp_reader structure. */ |
9751c00e | 477 | cpp_reader * |
9ceb1c29 | 478 | cpp_create_reader (lang) |
fad0ffbb | 479 | enum c_lang lang; |
6d71dc85 | 480 | { |
b3a8144e | 481 | cpp_reader *pfile; |
79bd622b | 482 | |
9751c00e | 483 | /* Initialise this instance of the library if it hasn't been already. */ |
c77d825d | 484 | init_library (); |
b3a8144e | 485 | |
486 | pfile = (cpp_reader *) xcalloc (1, sizeof (cpp_reader)); | |
79bd622b | 487 | |
eef6c20f | 488 | set_lang (pfile, lang); |
2ff3ad1d | 489 | CPP_OPTION (pfile, warn_import) = 1; |
490 | CPP_OPTION (pfile, discard_comments) = 1; | |
491 | CPP_OPTION (pfile, show_column) = 1; | |
3b304865 | 492 | CPP_OPTION (pfile, tabstop) = 8; |
624a7570 | 493 | CPP_OPTION (pfile, operator_names) = 1; |
537c4bc6 | 494 | #if DEFAULT_SIGNED_CHAR |
495 | CPP_OPTION (pfile, signed_char) = 1; | |
496 | #else | |
497 | CPP_OPTION (pfile, signed_char) = 0; | |
498 | #endif | |
2ff3ad1d | 499 | |
500 | CPP_OPTION (pfile, pending) = | |
501 | (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending)); | |
502 | ||
7b4b68f2 | 503 | /* It's simplest to just create this struct whether or not it will |
504 | be needed. */ | |
505 | pfile->deps = deps_init (); | |
506 | ||
729d2022 | 507 | /* Initialise the line map. Start at logical line 1, so we can use |
508 | a line number of zero for special states. */ | |
38692459 | 509 | init_line_maps (&pfile->line_maps); |
729d2022 | 510 | pfile->line = 1; |
38692459 | 511 | |
8d1752de | 512 | /* Initialize lexer state. */ |
79bd622b | 513 | pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments); |
514 | ||
f9b5f742 | 515 | /* Set up static tokens. */ |
79bd622b | 516 | pfile->date.type = CPP_EOF; |
f9b5f742 | 517 | pfile->avoid_paste.type = CPP_PADDING; |
518 | pfile->avoid_paste.val.source = NULL; | |
519 | pfile->eof.type = CPP_EOF; | |
520 | pfile->eof.flags = 0; | |
79bd622b | 521 | |
83dcbb5c | 522 | /* Create a token buffer for the lexer. */ |
523 | _cpp_init_tokenrun (&pfile->base_run, 250); | |
524 | pfile->cur_run = &pfile->base_run; | |
525 | pfile->cur_token = pfile->base_run.base; | |
83dcbb5c | 526 | |
79bd622b | 527 | /* Initialise the base context. */ |
528 | pfile->context = &pfile->base_context; | |
529 | pfile->base_context.macro = 0; | |
530 | pfile->base_context.prev = pfile->base_context.next = 0; | |
531 | ||
e6a5f963 | 532 | /* Aligned and unaligned storage. */ |
533 | pfile->a_buff = _cpp_get_buff (pfile, 0); | |
1fdf6039 | 534 | pfile->u_buff = _cpp_get_buff (pfile, 0); |
79bd622b | 535 | |
0d086e18 | 536 | /* Initialise the buffer obstack. */ |
537 | gcc_obstack_init (&pfile->buffer_ob); | |
538 | ||
f51c2148 | 539 | _cpp_init_includes (pfile); |
9751c00e | 540 | |
541 | return pfile; | |
e2f9a79f | 542 | } |
543 | ||
9bd97637 | 544 | /* Free resources used by PFILE. Accessing PFILE after this function |
e484a1cc | 545 | returns leads to undefined behaviour. Returns the error count. */ |
9bd97637 | 546 | int |
547 | cpp_destroy (pfile) | |
6d71dc85 | 548 | cpp_reader *pfile; |
549 | { | |
9bd97637 | 550 | int result; |
3ec84a0b | 551 | struct search_path *dir, *dirn; |
79bd622b | 552 | cpp_context *context, *contextn; |
729d2022 | 553 | tokenrun *run, *runn; |
11d10d3f | 554 | |
5b201908 | 555 | while (CPP_BUFFER (pfile) != NULL) |
4dfe8b74 | 556 | _cpp_pop_buffer (pfile); |
6d71dc85 | 557 | |
79bd622b | 558 | if (pfile->macro_buffer) |
8744fb7e | 559 | { |
560 | free ((PTR) pfile->macro_buffer); | |
561 | pfile->macro_buffer = NULL; | |
562 | pfile->macro_buffer_len = 0; | |
563 | } | |
79bd622b | 564 | |
7b4b68f2 | 565 | deps_free (pfile->deps); |
0d086e18 | 566 | obstack_free (&pfile->buffer_ob, 0); |
62adb1fe | 567 | |
0d086e18 | 568 | _cpp_destroy_hashtable (pfile); |
76faa4c0 | 569 | _cpp_cleanup_includes (pfile); |
11d10d3f | 570 | |
e6a5f963 | 571 | _cpp_free_buff (pfile->a_buff); |
1fdf6039 | 572 | _cpp_free_buff (pfile->u_buff); |
06c92cbc | 573 | _cpp_free_buff (pfile->free_buffs); |
79bd622b | 574 | |
729d2022 | 575 | for (run = &pfile->base_run; run; run = runn) |
576 | { | |
577 | runn = run->next; | |
578 | free (run->base); | |
579 | if (run != &pfile->base_run) | |
580 | free (run); | |
581 | } | |
582 | ||
79bd622b | 583 | for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn) |
11d10d3f | 584 | { |
79bd622b | 585 | dirn = dir->next; |
3ec84a0b | 586 | free ((PTR) dir->name); |
11d10d3f | 587 | free (dir); |
588 | } | |
79bd622b | 589 | |
590 | for (context = pfile->base_context.next; context; context = contextn) | |
591 | { | |
592 | contextn = context->next; | |
593 | free (context); | |
594 | } | |
9bd97637 | 595 | |
38692459 | 596 | free_line_maps (&pfile->line_maps); |
597 | ||
9bd97637 | 598 | result = pfile->errors; |
599 | free (pfile); | |
600 | ||
601 | return result; | |
6d71dc85 | 602 | } |
603 | ||
604 | ||
79bd622b | 605 | /* This structure defines one built-in identifier. A node will be |
606 | entered in the hash table under the name NAME, with value VALUE (if | |
607 | any). If flags has OPERATOR, the node's operator field is used; if | |
31ca26b1 | 608 | flags has BUILTIN the node's builtin field is used. Macros that are |
609 | known at build time should not be flagged BUILTIN, as then they do | |
610 | not appear in macro dumps with e.g. -dM or -dD. | |
31674461 | 611 | |
612 | Two values are not compile time constants, so we tag | |
f80e83a9 | 613 | them in the FLAGS field instead: |
1e67c2e8 | 614 | VERS value is the global version_string, quoted |
615 | ULP value is the global user_label_prefix | |
31674461 | 616 | |
79bd622b | 617 | Also, macros with CPLUS set in the flags field are entered only for C++. */ |
5ba37007 | 618 | struct builtin |
619 | { | |
e057cf7c | 620 | const U_CHAR *name; |
f80e83a9 | 621 | const char *value; |
79bd622b | 622 | unsigned char builtin; |
623 | unsigned char operator; | |
5ba37007 | 624 | unsigned short flags; |
79bd622b | 625 | unsigned short len; |
5ba37007 | 626 | }; |
79bd622b | 627 | #define VERS 0x01 |
628 | #define ULP 0x02 | |
629 | #define CPLUS 0x04 | |
630 | #define BUILTIN 0x08 | |
631 | #define OPERATOR 0x10 | |
632 | ||
633 | #define B(n, t) { U n, 0, t, 0, BUILTIN, sizeof n - 1 } | |
634 | #define C(n, v) { U n, v, 0, 0, 0, sizeof n - 1 } | |
635 | #define X(n, f) { U n, 0, 0, 0, f, sizeof n - 1 } | |
636 | #define O(n, c, f) { U n, 0, 0, c, OPERATOR | f, sizeof n - 1 } | |
5ba37007 | 637 | static const struct builtin builtin_array[] = |
6d71dc85 | 638 | { |
79bd622b | 639 | B("__TIME__", BT_TIME), |
640 | B("__DATE__", BT_DATE), | |
641 | B("__FILE__", BT_FILE), | |
642 | B("__BASE_FILE__", BT_BASE_FILE), | |
643 | B("__LINE__", BT_SPECLINE), | |
644 | B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL), | |
c7e5d924 | 645 | B("_Pragma", BT_PRAGMA), |
e057cf7c | 646 | |
f80e83a9 | 647 | X("__VERSION__", VERS), |
648 | X("__USER_LABEL_PREFIX__", ULP), | |
e057cf7c | 649 | C("__REGISTER_PREFIX__", REGISTER_PREFIX), |
650 | C("__HAVE_BUILTIN_SETJMP__", "1"), | |
a1a7e9d5 | 651 | #if USING_SJLJ_EXCEPTIONS |
652 | /* libgcc needs to know this. */ | |
653 | C("__USING_SJLJ_EXCEPTIONS__","1"), | |
654 | #endif | |
6d71dc85 | 655 | #ifndef NO_BUILTIN_SIZE_TYPE |
e057cf7c | 656 | C("__SIZE_TYPE__", SIZE_TYPE), |
6d71dc85 | 657 | #endif |
658 | #ifndef NO_BUILTIN_PTRDIFF_TYPE | |
e057cf7c | 659 | C("__PTRDIFF_TYPE__", PTRDIFF_TYPE), |
6d71dc85 | 660 | #endif |
7347d500 | 661 | #ifndef NO_BUILTIN_WCHAR_TYPE |
e057cf7c | 662 | C("__WCHAR_TYPE__", WCHAR_TYPE), |
7347d500 | 663 | #endif |
1d3cade7 | 664 | #ifndef NO_BUILTIN_WINT_TYPE |
665 | C("__WINT_TYPE__", WINT_TYPE), | |
666 | #endif | |
31ca26b1 | 667 | #ifdef STDC_0_IN_SYSTEM_HEADERS |
668 | B("__STDC__", BT_STDC), | |
669 | #else | |
670 | C("__STDC__", "1"), | |
671 | #endif | |
31674461 | 672 | |
673 | /* Named operators known to the preprocessor. These cannot be #defined | |
674 | and always have their stated meaning. They are treated like normal | |
79bd622b | 675 | identifiers except for the type code and the meaning. Most of them |
31674461 | 676 | are only for C++ (but see iso646.h). */ |
31674461 | 677 | O("and", CPP_AND_AND, CPLUS), |
678 | O("and_eq", CPP_AND_EQ, CPLUS), | |
679 | O("bitand", CPP_AND, CPLUS), | |
680 | O("bitor", CPP_OR, CPLUS), | |
681 | O("compl", CPP_COMPL, CPLUS), | |
682 | O("not", CPP_NOT, CPLUS), | |
683 | O("not_eq", CPP_NOT_EQ, CPLUS), | |
684 | O("or", CPP_OR_OR, CPLUS), | |
685 | O("or_eq", CPP_OR_EQ, CPLUS), | |
686 | O("xor", CPP_XOR, CPLUS), | |
79bd622b | 687 | O("xor_eq", CPP_XOR_EQ, CPLUS) |
5ba37007 | 688 | }; |
e057cf7c | 689 | #undef B |
690 | #undef C | |
691 | #undef X | |
624a7570 | 692 | #undef O |
3585dac7 | 693 | #define builtin_array_end (builtin_array + ARRAY_SIZE (builtin_array)) |
5ba37007 | 694 | |
9ceb1c29 | 695 | /* Subroutine of cpp_read_main_file; reads the builtins table above and |
e484a1cc | 696 | enters them, and language-specific macros, into the hash table. */ |
5ba37007 | 697 | static void |
b3a8144e | 698 | init_builtins (pfile) |
5ba37007 | 699 | cpp_reader *pfile; |
700 | { | |
5ba37007 | 701 | const struct builtin *b; |
4e464091 | 702 | |
1e67c2e8 | 703 | for(b = builtin_array; b < builtin_array_end; b++) |
6d71dc85 | 704 | { |
79bd622b | 705 | if ((b->flags & CPLUS) && ! CPP_OPTION (pfile, cplusplus)) |
31674461 | 706 | continue; |
707 | ||
624a7570 | 708 | if ((b->flags & OPERATOR) && ! CPP_OPTION (pfile, operator_names)) |
709 | continue; | |
710 | ||
79bd622b | 711 | if (b->flags & (OPERATOR | BUILTIN)) |
712 | { | |
713 | cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len); | |
714 | if (b->flags & OPERATOR) | |
715 | { | |
716 | hp->flags |= NODE_OPERATOR; | |
717 | hp->value.operator = b->operator; | |
718 | } | |
719 | else | |
720 | { | |
721 | hp->type = NT_MACRO; | |
31ca26b1 | 722 | hp->flags |= NODE_BUILTIN | NODE_WARN; |
79bd622b | 723 | hp->value.builtin = b->builtin; |
724 | } | |
725 | } | |
726 | else /* A standard macro of some kind. */ | |
1e67c2e8 | 727 | { |
f80e83a9 | 728 | const char *val; |
729 | char *str; | |
730 | ||
731 | if (b->flags & VERS) | |
732 | { | |
a336277c | 733 | /* Allocate enough space for 'name "value"\n\0'. */ |
734 | str = alloca (b->len + strlen (version_string) + 5); | |
735 | sprintf (str, "%s \"%s\"\n", b->name, version_string); | |
f80e83a9 | 736 | } |
737 | else | |
738 | { | |
739 | if (b->flags & ULP) | |
4e464091 | 740 | val = CPP_OPTION (pfile, user_label_prefix); |
f80e83a9 | 741 | else |
742 | val = b->value; | |
743 | ||
a336277c | 744 | /* Allocate enough space for "name value\n\0". */ |
745 | str = alloca (b->len + strlen (val) + 3); | |
746 | sprintf(str, "%s %s\n", b->name, val); | |
f80e83a9 | 747 | } |
a622c29d | 748 | |
a336277c | 749 | _cpp_define_builtin (pfile, str); |
1e67c2e8 | 750 | } |
6d71dc85 | 751 | } |
eef6c20f | 752 | |
753 | if (CPP_OPTION (pfile, cplusplus)) | |
31ca26b1 | 754 | { |
755 | _cpp_define_builtin (pfile, "__cplusplus 1"); | |
756 | if (SUPPORTS_ONE_ONLY) | |
757 | _cpp_define_builtin (pfile, "__GXX_WEAK__ 1"); | |
758 | else | |
759 | _cpp_define_builtin (pfile, "__GXX_WEAK__ 0"); | |
760 | } | |
eef6c20f | 761 | if (CPP_OPTION (pfile, objc)) |
762 | _cpp_define_builtin (pfile, "__OBJC__ 1"); | |
763 | ||
764 | if (CPP_OPTION (pfile, lang) == CLK_STDC94) | |
765 | _cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L"); | |
766 | else if (CPP_OPTION (pfile, c99)) | |
767 | _cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L"); | |
768 | ||
537c4bc6 | 769 | if (CPP_OPTION (pfile, signed_char) == 0) |
770 | _cpp_define_builtin (pfile, "__CHAR_UNSIGNED__ 1"); | |
771 | ||
eef6c20f | 772 | if (CPP_OPTION (pfile, lang) == CLK_STDC89 |
773 | || CPP_OPTION (pfile, lang) == CLK_STDC94 | |
774 | || CPP_OPTION (pfile, lang) == CLK_STDC99) | |
775 | _cpp_define_builtin (pfile, "__STRICT_ANSI__ 1"); | |
776 | else if (CPP_OPTION (pfile, lang) == CLK_ASM) | |
777 | _cpp_define_builtin (pfile, "__ASSEMBLER__ 1"); | |
6d71dc85 | 778 | } |
79bd622b | 779 | #undef BUILTIN |
780 | #undef OPERATOR | |
608a2132 | 781 | #undef VERS |
5ba37007 | 782 | #undef ULP |
79bd622b | 783 | #undef CPLUS |
f80e83a9 | 784 | #undef builtin_array_end |
6d71dc85 | 785 | |
d2e850c1 | 786 | /* And another subroutine. This one sets up the standard include path. */ |
787 | static void | |
b3a8144e | 788 | init_standard_includes (pfile) |
d2e850c1 | 789 | cpp_reader *pfile; |
790 | { | |
d2e850c1 | 791 | char *path; |
4f98874d | 792 | const struct default_include *p; |
2ff3ad1d | 793 | const char *specd_prefix = CPP_OPTION (pfile, include_prefix); |
d2e850c1 | 794 | |
795 | /* Several environment variables may add to the include search path. | |
796 | CPATH specifies an additional list of directories to be searched | |
797 | as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH, | |
798 | etc. specify an additional list of directories to be searched as | |
799 | if specified with -isystem, for the language indicated. */ | |
800 | ||
801 | GET_ENV_PATH_LIST (path, "CPATH"); | |
802 | if (path != 0 && *path != 0) | |
466b3f58 | 803 | path_include (pfile, path, BRACKET); |
d2e850c1 | 804 | |
2ff3ad1d | 805 | switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus)) |
d2e850c1 | 806 | { |
807 | case 0: | |
808 | GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH"); | |
809 | break; | |
810 | case 1: | |
811 | GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH"); | |
812 | break; | |
813 | case 2: | |
814 | GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH"); | |
815 | break; | |
816 | case 3: | |
817 | GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH"); | |
818 | break; | |
819 | } | |
820 | if (path != 0 && *path != 0) | |
466b3f58 | 821 | path_include (pfile, path, SYSTEM); |
d2e850c1 | 822 | |
823 | /* Search "translated" versions of GNU directories. | |
824 | These have /usr/local/lib/gcc... replaced by specd_prefix. */ | |
472679ed | 825 | if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len) |
d2e850c1 | 826 | { |
d2e850c1 | 827 | /* Remove the `include' from /usr/local/lib/gcc.../include. |
2c0e001b | 828 | GCC_INCLUDE_DIR will always end in /include. */ |
472679ed | 829 | int default_len = cpp_GCC_INCLUDE_DIR_len; |
830 | char *default_prefix = (char *) alloca (default_len + 1); | |
d2e850c1 | 831 | int specd_len = strlen (specd_prefix); |
832 | ||
472679ed | 833 | memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len); |
d2e850c1 | 834 | default_prefix[default_len] = '\0'; |
835 | ||
472679ed | 836 | for (p = cpp_include_defaults; p->fname; p++) |
d2e850c1 | 837 | { |
838 | /* Some standard dirs are only for C++. */ | |
839 | if (!p->cplusplus | |
2ff3ad1d | 840 | || (CPP_OPTION (pfile, cplusplus) |
841 | && !CPP_OPTION (pfile, no_standard_cplusplus_includes))) | |
d2e850c1 | 842 | { |
843 | /* Does this dir start with the prefix? */ | |
b3954366 | 844 | if (!memcmp (p->fname, default_prefix, default_len)) |
d2e850c1 | 845 | { |
846 | /* Yes; change prefix and add to search list. */ | |
847 | int flen = strlen (p->fname); | |
848 | int this_len = specd_len + flen - default_len; | |
849 | char *str = (char *) xmalloc (this_len + 1); | |
850 | memcpy (str, specd_prefix, specd_len); | |
851 | memcpy (str + specd_len, | |
852 | p->fname + default_len, | |
853 | flen - default_len + 1); | |
854 | ||
466b3f58 | 855 | append_include_chain (pfile, str, SYSTEM, p->cxx_aware); |
d2e850c1 | 856 | } |
857 | } | |
858 | } | |
859 | } | |
860 | ||
861 | /* Search ordinary names for GNU include directories. */ | |
472679ed | 862 | for (p = cpp_include_defaults; p->fname; p++) |
d2e850c1 | 863 | { |
864 | /* Some standard dirs are only for C++. */ | |
865 | if (!p->cplusplus | |
2ff3ad1d | 866 | || (CPP_OPTION (pfile, cplusplus) |
867 | && !CPP_OPTION (pfile, no_standard_cplusplus_includes))) | |
d2e850c1 | 868 | { |
17b80c08 | 869 | char *str = update_path (p->fname, p->component); |
466b3f58 | 870 | append_include_chain (pfile, str, SYSTEM, p->cxx_aware); |
d2e850c1 | 871 | } |
872 | } | |
873 | } | |
874 | ||
e484a1cc | 875 | /* Pushes a command line -imacro and -include file indicated by P onto |
fe560637 | 876 | the buffer stack. Returns non-zero if successful. */ |
877 | static bool | |
878 | push_include (pfile, p) | |
8d1752de | 879 | cpp_reader *pfile; |
880 | struct pending_option *p; | |
8d1752de | 881 | { |
fe560637 | 882 | cpp_token header; |
8d1752de | 883 | |
fe560637 | 884 | /* Later: maybe update this to use the #include "" search path |
885 | if cpp_read_file fails. */ | |
886 | header.type = CPP_STRING; | |
887 | header.val.str.text = (const unsigned char *) p->arg; | |
888 | header.val.str.len = strlen (p->arg); | |
889 | /* Make the command line directive take up a line. */ | |
729d2022 | 890 | pfile->line++; |
fe560637 | 891 | |
892 | return _cpp_execute_include (pfile, &header, IT_CMDLINE); | |
893 | } | |
894 | ||
895 | /* Frees a pending_option chain. */ | |
896 | static void | |
897 | free_chain (head) | |
898 | struct pending_option *head; | |
899 | { | |
900 | struct pending_option *next; | |
901 | ||
902 | while (head) | |
903 | { | |
904 | next = head->next; | |
905 | free (head); | |
906 | head = next; | |
8d1752de | 907 | } |
908 | } | |
909 | ||
9ceb1c29 | 910 | /* This is called after options have been parsed, and partially |
911 | processed. Setup for processing input from the file named FNAME, | |
912 | or stdin if it is the empty string. Return the original filename | |
913 | on success (e.g. foo.i->foo.c), or NULL on failure. */ | |
914 | const char * | |
915 | cpp_read_main_file (pfile, fname, table) | |
6d71dc85 | 916 | cpp_reader *pfile; |
8d7a2585 | 917 | const char *fname; |
9ceb1c29 | 918 | hash_table *table; |
6d71dc85 | 919 | { |
9ceb1c29 | 920 | /* The front ends don't set up the hash table until they have |
921 | finished processing the command line options, so initializing the | |
922 | hashtable is deferred until now. */ | |
923 | _cpp_init_hashtable (pfile, table); | |
924 | ||
d2e850c1 | 925 | /* Set up the include search path now. */ |
2ff3ad1d | 926 | if (! CPP_OPTION (pfile, no_standard_includes)) |
b3a8144e | 927 | init_standard_includes (pfile); |
d2e850c1 | 928 | |
2ff3ad1d | 929 | merge_include_chains (pfile); |
d2e850c1 | 930 | |
931 | /* With -v, print the list of dirs to search. */ | |
2ff3ad1d | 932 | if (CPP_OPTION (pfile, verbose)) |
d2e850c1 | 933 | { |
3ec84a0b | 934 | struct search_path *l; |
d2e850c1 | 935 | fprintf (stderr, _("#include \"...\" search starts here:\n")); |
2ff3ad1d | 936 | for (l = CPP_OPTION (pfile, quote_include); l; l = l->next) |
d2e850c1 | 937 | { |
2ff3ad1d | 938 | if (l == CPP_OPTION (pfile, bracket_include)) |
d2e850c1 | 939 | fprintf (stderr, _("#include <...> search starts here:\n")); |
940 | fprintf (stderr, " %s\n", l->name); | |
941 | } | |
942 | fprintf (stderr, _("End of search list.\n")); | |
943 | } | |
944 | ||
af808d7d | 945 | if (CPP_OPTION (pfile, print_deps)) |
162804c0 | 946 | /* Set the default target (if there is none already). */ |
7e555f5f | 947 | deps_add_default_target (pfile->deps, fname); |
af808d7d | 948 | |
9ceb1c29 | 949 | /* Open the main input file. */ |
fd944c82 | 950 | if (!_cpp_read_file (pfile, fname)) |
9ceb1c29 | 951 | return NULL; |
d2e850c1 | 952 | |
438ac94c | 953 | /* Set this after cpp_post_options so the client can change the |
954 | option if it wishes, and after stacking the main file so we don't | |
955 | trace the main file. */ | |
956 | pfile->line_maps.trace_includes = CPP_OPTION (pfile, print_include_names); | |
957 | ||
9ceb1c29 | 958 | /* For foo.i, read the original filename foo.c now, for the benefit |
959 | of the front ends. */ | |
960 | if (CPP_OPTION (pfile, preprocessed)) | |
961 | read_original_filename (pfile); | |
962 | ||
963 | return pfile->map->to_file; | |
964 | } | |
965 | ||
966 | /* For preprocessed files, if the first tokens are of the form # NUM. | |
967 | handle the directive so we know the original file name. This will | |
968 | generate file_change callbacks, which the front ends must handle | |
969 | appropriately given their state of initialization. */ | |
970 | static void | |
971 | read_original_filename (pfile) | |
972 | cpp_reader *pfile; | |
973 | { | |
974 | const cpp_token *token, *token1; | |
975 | ||
976 | /* Lex ahead; if the first tokens are of the form # NUM, then | |
977 | process the directive, otherwise back up. */ | |
978 | token = _cpp_lex_direct (pfile); | |
979 | if (token->type == CPP_HASH) | |
980 | { | |
981 | token1 = _cpp_lex_direct (pfile); | |
982 | _cpp_backup_tokens (pfile, 1); | |
983 | ||
984 | /* If it's a #line directive, handle it. */ | |
985 | if (token1->type == CPP_NUMBER) | |
986 | { | |
987 | _cpp_handle_directive (pfile, token->flags & PREV_WHITE); | |
988 | return; | |
989 | } | |
990 | } | |
991 | ||
992 | /* Backup as if nothing happened. */ | |
993 | _cpp_backup_tokens (pfile, 1); | |
994 | } | |
995 | ||
996 | /* Handle pending command line options: -D, -U, -A, -imacros and | |
997 | -include. This should be called after debugging has been properly | |
998 | set up in the front ends. */ | |
999 | void | |
1000 | cpp_finish_options (pfile) | |
1001 | cpp_reader *pfile; | |
1002 | { | |
fe560637 | 1003 | /* Install builtins and process command line macros etc. in the order |
1004 | they appeared, but only if not already preprocessed. */ | |
c2acbd5a | 1005 | if (! CPP_OPTION (pfile, preprocessed)) |
6d71dc85 | 1006 | { |
fe560637 | 1007 | struct pending_option *p; |
1008 | ||
f4ec69cb | 1009 | _cpp_do_file_change (pfile, LC_RENAME, _("<built-in>"), 1, 0); |
fe560637 | 1010 | init_builtins (pfile); |
1011 | _cpp_do_file_change (pfile, LC_RENAME, _("<command line>"), 1, 0); | |
1012 | for (p = CPP_OPTION (pfile, pending)->directive_head; p; p = p->next) | |
c2acbd5a | 1013 | (*p->handler) (pfile, p->arg); |
fe560637 | 1014 | |
1015 | /* Scan -imacros files after command line defines, but before | |
1016 | files given with -include. */ | |
155b5da1 | 1017 | while ((p = CPP_OPTION (pfile, pending)->imacros_head) != NULL) |
fe560637 | 1018 | { |
1019 | if (push_include (pfile, p)) | |
1020 | { | |
1021 | pfile->buffer->return_at_eof = true; | |
1022 | cpp_scan_nooutput (pfile); | |
1023 | } | |
155b5da1 | 1024 | CPP_OPTION (pfile, pending)->imacros_head = p->next; |
1025 | free (p); | |
fe560637 | 1026 | } |
6d71dc85 | 1027 | } |
c2acbd5a | 1028 | |
fe560637 | 1029 | free_chain (CPP_OPTION (pfile, pending)->directive_head); |
fe560637 | 1030 | _cpp_push_next_buffer (pfile); |
fe560637 | 1031 | } |
6d71dc85 | 1032 | |
fe560637 | 1033 | /* Called to push the next buffer on the stack given by -include. If |
1034 | there are none, free the pending structure and restore the line map | |
1035 | for the main file. */ | |
1036 | bool | |
1037 | _cpp_push_next_buffer (pfile) | |
1038 | cpp_reader *pfile; | |
1039 | { | |
1040 | bool pushed = false; | |
6d71dc85 | 1041 | |
155b5da1 | 1042 | /* This is't pretty; we'd rather not be relying on this as a boolean |
1043 | for reverting the line map. Further, we only free the chains in | |
1044 | this conditional, so an early call to cpp_finish / cpp_destroy | |
1045 | will leak that memory. */ | |
1046 | if (CPP_OPTION (pfile, pending) | |
1047 | && CPP_OPTION (pfile, pending)->imacros_head == NULL) | |
fe560637 | 1048 | { |
1049 | while (!pushed) | |
1050 | { | |
1051 | struct pending_option *p = CPP_OPTION (pfile, pending)->include_head; | |
1052 | ||
1053 | if (p == NULL) | |
1054 | break; | |
1055 | if (! CPP_OPTION (pfile, preprocessed)) | |
1056 | pushed = push_include (pfile, p); | |
1057 | CPP_OPTION (pfile, pending)->include_head = p->next; | |
1058 | free (p); | |
1059 | } | |
1060 | ||
1061 | if (!pushed) | |
1062 | { | |
1063 | free (CPP_OPTION (pfile, pending)); | |
1064 | CPP_OPTION (pfile, pending) = NULL; | |
1065 | ||
1066 | /* Restore the line map for the main file. */ | |
1067 | if (! CPP_OPTION (pfile, preprocessed)) | |
1068 | _cpp_do_file_change (pfile, LC_RENAME, | |
1069 | pfile->line_maps.maps[0].to_file, 1, 0); | |
1070 | } | |
1071 | } | |
1072 | ||
1073 | return pushed; | |
6d71dc85 | 1074 | } |
1075 | ||
de2873b7 | 1076 | /* Use mkdeps.c to output dependency information. */ |
b3a8144e | 1077 | static void |
1078 | output_deps (pfile) | |
1079 | cpp_reader *pfile; | |
1080 | { | |
1081 | /* Stream on which to print the dependency information. */ | |
1082 | FILE *deps_stream = 0; | |
35823b64 | 1083 | const char *const deps_mode = |
1084 | CPP_OPTION (pfile, print_deps_append) ? "a" : "w"; | |
b3a8144e | 1085 | |
5ca8af9f | 1086 | if (CPP_OPTION (pfile, deps_file)[0] == '\0') |
b3a8144e | 1087 | deps_stream = stdout; |
1088 | else | |
1089 | { | |
1090 | deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode); | |
1091 | if (deps_stream == 0) | |
1092 | { | |
1093 | cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file)); | |
1094 | return; | |
1095 | } | |
1096 | } | |
1097 | ||
1098 | deps_write (pfile->deps, deps_stream, 72); | |
1099 | ||
1100 | if (CPP_OPTION (pfile, deps_phony_targets)) | |
1101 | deps_phony_targets (pfile->deps, deps_stream); | |
1102 | ||
1103 | /* Don't close stdout. */ | |
9d4c611a | 1104 | if (deps_stream != stdout) |
b3a8144e | 1105 | { |
1106 | if (ferror (deps_stream) || fclose (deps_stream) != 0) | |
1107 | cpp_fatal (pfile, "I/O error on output"); | |
1108 | } | |
1109 | } | |
1110 | ||
6d71dc85 | 1111 | /* This is called at the end of preprocessing. It pops the |
1112 | last buffer and writes dependency output. It should also | |
1113 | clear macro definitions, such that you could call cpp_start_read | |
8d1752de | 1114 | with a new filename to restart processing. */ |
6d71dc85 | 1115 | void |
79bd622b | 1116 | cpp_finish (pfile) |
6d71dc85 | 1117 | cpp_reader *pfile; |
1118 | { | |
5475a165 | 1119 | /* cpplex.c leaves the final buffer on the stack. This it so that |
1120 | it returns an unending stream of CPP_EOFs to the client. If we | |
3fb1e43b | 1121 | popped the buffer, we'd dereference a NULL buffer pointer and |
5475a165 | 1122 | segfault. It's nice to allow the client to do worry-free excess |
1123 | cpp_get_token calls. */ | |
1124 | while (pfile->buffer) | |
1125 | _cpp_pop_buffer (pfile); | |
9e87fa80 | 1126 | |
62adb1fe | 1127 | /* Don't write the deps file if preprocessing has failed. */ |
2ff3ad1d | 1128 | if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0) |
b3a8144e | 1129 | output_deps (pfile); |
d453a374 | 1130 | |
34627970 | 1131 | /* Report on headers that could use multiple include guards. */ |
1132 | if (CPP_OPTION (pfile, print_include_names)) | |
f51c2148 | 1133 | _cpp_report_missing_guards (pfile); |
6d71dc85 | 1134 | } |
1135 | ||
e484a1cc | 1136 | /* Add a directive to be handled later in the initialization phase. */ |
dd48bf24 | 1137 | static void |
2ff3ad1d | 1138 | new_pending_directive (pend, text, handler) |
1139 | struct cpp_pending *pend; | |
dd48bf24 | 1140 | const char *text; |
d73269b6 | 1141 | cl_directive_handler handler; |
dd48bf24 | 1142 | { |
1143 | struct pending_option *o = (struct pending_option *) | |
1144 | xmalloc (sizeof (struct pending_option)); | |
1145 | ||
8d7a2585 | 1146 | o->arg = text; |
dd48bf24 | 1147 | o->next = NULL; |
d73269b6 | 1148 | o->handler = handler; |
2ff3ad1d | 1149 | APPEND (pend, directive, o); |
dd48bf24 | 1150 | } |
1151 | ||
2ff3ad1d | 1152 | /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string"); |
1153 | I.e. a const string initializer with parens around it. That is | |
1154 | what N_("string") resolves to, so we make no_* be macros instead. */ | |
68435912 | 1155 | #define no_arg N_("argument missing after %s") |
1156 | #define no_ass N_("assertion missing after %s") | |
1157 | #define no_dir N_("directory name missing after %s") | |
1158 | #define no_fil N_("file name missing after %s") | |
1159 | #define no_mac N_("macro name missing after %s") | |
1160 | #define no_pth N_("path name missing after %s") | |
1161 | #define no_num N_("number missing after %s") | |
1162 | #define no_tgt N_("target missing after %s") | |
2ff3ad1d | 1163 | |
1164 | /* This is the list of all command line options, with the leading | |
1165 | "-" removed. It must be sorted in ASCII collating order. */ | |
1166 | #define COMMAND_LINE_OPTIONS \ | |
2ff3ad1d | 1167 | DEF_OPT("$", 0, OPT_dollar) \ |
1168 | DEF_OPT("+", 0, OPT_plus) \ | |
1169 | DEF_OPT("-help", 0, OPT__help) \ | |
7a6882ca | 1170 | DEF_OPT("-target-help", 0, OPT_target__help) \ |
2ff3ad1d | 1171 | DEF_OPT("-version", 0, OPT__version) \ |
1172 | DEF_OPT("A", no_ass, OPT_A) \ | |
1173 | DEF_OPT("C", 0, OPT_C) \ | |
1174 | DEF_OPT("D", no_mac, OPT_D) \ | |
1175 | DEF_OPT("H", 0, OPT_H) \ | |
1176 | DEF_OPT("I", no_dir, OPT_I) \ | |
1177 | DEF_OPT("M", 0, OPT_M) \ | |
9ec9f6b6 | 1178 | DEF_OPT("MD", no_fil, OPT_MD) \ |
af808d7d | 1179 | DEF_OPT("MF", no_fil, OPT_MF) \ |
2ff3ad1d | 1180 | DEF_OPT("MG", 0, OPT_MG) \ |
1181 | DEF_OPT("MM", 0, OPT_MM) \ | |
9ec9f6b6 | 1182 | DEF_OPT("MMD", no_fil, OPT_MMD) \ |
2e399de6 | 1183 | DEF_OPT("MP", 0, OPT_MP) \ |
7b4b68f2 | 1184 | DEF_OPT("MQ", no_tgt, OPT_MQ) \ |
3d7dca39 | 1185 | DEF_OPT("MT", no_tgt, OPT_MT) \ |
2ff3ad1d | 1186 | DEF_OPT("P", 0, OPT_P) \ |
1187 | DEF_OPT("U", no_mac, OPT_U) \ | |
1188 | DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \ | |
1189 | DEF_OPT("d", no_arg, OPT_d) \ | |
1190 | DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \ | |
1191 | DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \ | |
624a7570 | 1192 | DEF_OPT("fno-operator-names", 0, OPT_fno_operator_names) \ |
2ff3ad1d | 1193 | DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \ |
1194 | DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \ | |
1195 | DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \ | |
1196 | DEF_OPT("fshow-column", 0, OPT_fshow_column) \ | |
537c4bc6 | 1197 | DEF_OPT("fsigned-char", 0, OPT_fsigned_char) \ |
3b304865 | 1198 | DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \ |
537c4bc6 | 1199 | DEF_OPT("funsigned-char", 0, OPT_funsigned_char) \ |
2ff3ad1d | 1200 | DEF_OPT("h", 0, OPT_h) \ |
1201 | DEF_OPT("idirafter", no_dir, OPT_idirafter) \ | |
1202 | DEF_OPT("imacros", no_fil, OPT_imacros) \ | |
1203 | DEF_OPT("include", no_fil, OPT_include) \ | |
1204 | DEF_OPT("iprefix", no_pth, OPT_iprefix) \ | |
1205 | DEF_OPT("isystem", no_dir, OPT_isystem) \ | |
1206 | DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \ | |
1207 | DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \ | |
1208 | DEF_OPT("lang-asm", 0, OPT_lang_asm) \ | |
1209 | DEF_OPT("lang-c", 0, OPT_lang_c) \ | |
1210 | DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \ | |
1211 | DEF_OPT("lang-c89", 0, OPT_lang_c89) \ | |
2ff3ad1d | 1212 | DEF_OPT("lang-objc", 0, OPT_lang_objc) \ |
1213 | DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \ | |
1214 | DEF_OPT("nostdinc", 0, OPT_nostdinc) \ | |
1215 | DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \ | |
1216 | DEF_OPT("o", no_fil, OPT_o) \ | |
1217 | DEF_OPT("pedantic", 0, OPT_pedantic) \ | |
1218 | DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \ | |
1219 | DEF_OPT("remap", 0, OPT_remap) \ | |
fad0ffbb | 1220 | DEF_OPT("std=c++98", 0, OPT_std_cplusplus98) \ |
2ff3ad1d | 1221 | DEF_OPT("std=c89", 0, OPT_std_c89) \ |
1222 | DEF_OPT("std=c99", 0, OPT_std_c99) \ | |
1223 | DEF_OPT("std=c9x", 0, OPT_std_c9x) \ | |
1224 | DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \ | |
1225 | DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \ | |
1226 | DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \ | |
1227 | DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \ | |
1228 | DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \ | |
1229 | DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \ | |
1230 | DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \ | |
2ff3ad1d | 1231 | DEF_OPT("trigraphs", 0, OPT_trigraphs) \ |
1232 | DEF_OPT("v", 0, OPT_v) \ | |
1353d9f7 | 1233 | DEF_OPT("version", 0, OPT_version) \ |
2ff3ad1d | 1234 | DEF_OPT("w", 0, OPT_w) |
1235 | ||
1236 | #define DEF_OPT(text, msg, code) code, | |
bcc40c63 | 1237 | enum opt_code |
1238 | { | |
2ff3ad1d | 1239 | COMMAND_LINE_OPTIONS |
bcc40c63 | 1240 | N_OPTS |
1241 | }; | |
2ff3ad1d | 1242 | #undef DEF_OPT |
bcc40c63 | 1243 | |
1244 | struct cl_option | |
1245 | { | |
1246 | const char *opt_text; | |
1247 | const char *msg; | |
1248 | size_t opt_len; | |
1249 | enum opt_code opt_code; | |
1250 | }; | |
1251 | ||
2ff3ad1d | 1252 | #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code }, |
bcc40c63 | 1253 | #ifdef HOST_EBCDIC |
1254 | static struct cl_option cl_options[] = | |
1255 | #else | |
1256 | static const struct cl_option cl_options[] = | |
1257 | #endif | |
1258 | { | |
2ff3ad1d | 1259 | COMMAND_LINE_OPTIONS |
bcc40c63 | 1260 | }; |
1261 | #undef DEF_OPT | |
2ff3ad1d | 1262 | #undef COMMAND_LINE_OPTIONS |
bcc40c63 | 1263 | |
1264 | /* Perform a binary search to find which, if any, option the given | |
1265 | command-line matches. Returns its index in the option array, | |
1266 | negative on failure. Complications arise since some options can be | |
1267 | suffixed with an argument, and multiple complete matches can occur, | |
c2acbd5a | 1268 | e.g. -iwithprefix and -iwithprefixbefore. Moreover, we need to |
1269 | accept options beginning with -W that we do not recognise, but not | |
1270 | to swallow any subsequent command line argument; this is handled as | |
1271 | special cases in cpp_handle_option. */ | |
bcc40c63 | 1272 | static int |
1273 | parse_option (input) | |
1274 | const char *input; | |
1275 | { | |
1276 | unsigned int md, mn, mx; | |
1277 | size_t opt_len; | |
1278 | int comp; | |
1279 | ||
1280 | mn = 0; | |
1281 | mx = N_OPTS; | |
1282 | ||
1283 | while (mx > mn) | |
1284 | { | |
1285 | md = (mn + mx) / 2; | |
2ff3ad1d | 1286 | |
bcc40c63 | 1287 | opt_len = cl_options[md].opt_len; |
b3954366 | 1288 | comp = memcmp (input, cl_options[md].opt_text, opt_len); |
2ff3ad1d | 1289 | |
bcc40c63 | 1290 | if (comp > 0) |
1291 | mn = md + 1; | |
1292 | else if (comp < 0) | |
1293 | mx = md; | |
1294 | else | |
1295 | { | |
1296 | if (input[opt_len] == '\0') | |
1297 | return md; | |
1298 | /* We were passed more text. If the option takes an argument, | |
1299 | we may match a later option or we may have been passed the | |
1300 | argument. The longest possible option match succeeds. | |
1301 | If the option takes no arguments we have not matched and | |
8d1752de | 1302 | continue the search (e.g. input="stdc++" match was "stdc"). */ |
bcc40c63 | 1303 | mn = md + 1; |
1304 | if (cl_options[md].msg) | |
1305 | { | |
1306 | /* Scan forwards. If we get an exact match, return it. | |
1307 | Otherwise, return the longest option-accepting match. | |
8d1752de | 1308 | This loops no more than twice with current options. */ |
bcc40c63 | 1309 | mx = md; |
ee6c4e4b | 1310 | for (; mn < (unsigned int) N_OPTS; mn++) |
bcc40c63 | 1311 | { |
1312 | opt_len = cl_options[mn].opt_len; | |
b3954366 | 1313 | if (memcmp (input, cl_options[mn].opt_text, opt_len)) |
bcc40c63 | 1314 | break; |
1315 | if (input[opt_len] == '\0') | |
1316 | return mn; | |
1317 | if (cl_options[mn].msg) | |
1318 | mx = mn; | |
1319 | } | |
1320 | return mx; | |
1321 | } | |
1322 | } | |
1323 | } | |
1324 | ||
1325 | return -1; | |
1326 | } | |
1327 | ||
6d71dc85 | 1328 | /* Handle one command-line option in (argc, argv). |
1329 | Can be called multiple times, to handle multiple sets of options. | |
a182c763 | 1330 | If ignore is non-zero, this will ignore unrecognized -W* options. |
6d71dc85 | 1331 | Returns number of strings consumed. */ |
dfa5c7fa | 1332 | int |
a182c763 | 1333 | cpp_handle_option (pfile, argc, argv, ignore) |
6d71dc85 | 1334 | cpp_reader *pfile; |
1335 | int argc; | |
1336 | char **argv; | |
a182c763 | 1337 | int ignore; |
6d71dc85 | 1338 | { |
6d71dc85 | 1339 | int i = 0; |
c4abf88d | 1340 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
6d71dc85 | 1341 | |
7e555f5f | 1342 | /* Interpret "-" or a non-option as a file name. */ |
1343 | if (argv[i][0] != '-' || argv[i][1] == '\0') | |
9fa36617 | 1344 | { |
7e555f5f | 1345 | if (CPP_OPTION (pfile, in_fname) == NULL) |
1346 | CPP_OPTION (pfile, in_fname) = argv[i]; | |
1347 | else if (CPP_OPTION (pfile, out_fname) == NULL) | |
2ff3ad1d | 1348 | CPP_OPTION (pfile, out_fname) = argv[i]; |
9fa36617 | 1349 | else |
68435912 | 1350 | cpp_fatal (pfile, "too many filenames. Type %s --help for usage info", |
7e555f5f | 1351 | progname); |
9fa36617 | 1352 | } |
1353 | else | |
bcc40c63 | 1354 | { |
1355 | enum opt_code opt_code; | |
1356 | int opt_index; | |
8d7a2585 | 1357 | const char *arg = 0; |
bcc40c63 | 1358 | |
8d1752de | 1359 | /* Skip over '-'. */ |
bcc40c63 | 1360 | opt_index = parse_option (&argv[i][1]); |
1361 | if (opt_index < 0) | |
1362 | return i; | |
1363 | ||
1364 | opt_code = cl_options[opt_index].opt_code; | |
1365 | if (cl_options[opt_index].msg) | |
1366 | { | |
1367 | arg = &argv[i][cl_options[opt_index].opt_len + 1]; | |
1368 | ||
b60b3a91 | 1369 | /* Yuk. Special case for -W as it must not swallow |
bcc40c63 | 1370 | up any following argument. If this becomes common, add |
8d1752de | 1371 | another field to the cl_options table. */ |
b60b3a91 | 1372 | if (arg[0] == '\0' && opt_code != OPT_W) |
bcc40c63 | 1373 | { |
1374 | arg = argv[++i]; | |
1375 | if (!arg) | |
1376 | { | |
780662e7 | 1377 | cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]); |
bcc40c63 | 1378 | return argc; |
1379 | } | |
1380 | } | |
1381 | } | |
2ff3ad1d | 1382 | |
bcc40c63 | 1383 | switch (opt_code) |
1384 | { | |
8d1752de | 1385 | case N_OPTS: /* Shut GCC up. */ |
bcc40c63 | 1386 | break; |
1387 | case OPT_fleading_underscore: | |
4e464091 | 1388 | CPP_OPTION (pfile, user_label_prefix) = "_"; |
bcc40c63 | 1389 | break; |
1390 | case OPT_fno_leading_underscore: | |
4e464091 | 1391 | CPP_OPTION (pfile, user_label_prefix) = ""; |
bcc40c63 | 1392 | break; |
624a7570 | 1393 | case OPT_fno_operator_names: |
1394 | CPP_OPTION (pfile, operator_names) = 0; | |
1395 | break; | |
bcc40c63 | 1396 | case OPT_fpreprocessed: |
2ff3ad1d | 1397 | CPP_OPTION (pfile, preprocessed) = 1; |
bcc40c63 | 1398 | break; |
1399 | case OPT_fno_preprocessed: | |
2ff3ad1d | 1400 | CPP_OPTION (pfile, preprocessed) = 0; |
1401 | break; | |
1402 | case OPT_fshow_column: | |
1403 | CPP_OPTION (pfile, show_column) = 1; | |
1404 | break; | |
1405 | case OPT_fno_show_column: | |
1406 | CPP_OPTION (pfile, show_column) = 0; | |
bcc40c63 | 1407 | break; |
537c4bc6 | 1408 | case OPT_fsigned_char: |
1409 | CPP_OPTION (pfile, signed_char) = 1; | |
1410 | break; | |
1411 | case OPT_funsigned_char: | |
1412 | CPP_OPTION (pfile, signed_char) = 0; | |
1413 | break; | |
3b304865 | 1414 | case OPT_ftabstop: |
1415 | /* Silently ignore empty string, non-longs and silly values. */ | |
1416 | if (arg[0] != '\0') | |
1417 | { | |
1418 | char *endptr; | |
1419 | long tabstop = strtol (arg, &endptr, 10); | |
1420 | if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100) | |
1421 | CPP_OPTION (pfile, tabstop) = tabstop; | |
1422 | } | |
1423 | break; | |
bcc40c63 | 1424 | case OPT_w: |
2ff3ad1d | 1425 | CPP_OPTION (pfile, inhibit_warnings) = 1; |
bcc40c63 | 1426 | break; |
bcc40c63 | 1427 | case OPT_h: |
1428 | case OPT__help: | |
1429 | print_help (); | |
72b04ca4 | 1430 | CPP_OPTION (pfile, help_only) = 1; |
bcc40c63 | 1431 | break; |
7a6882ca | 1432 | case OPT_target__help: |
1353d9f7 | 1433 | /* Print if any target specific options. cpplib has none, but |
1434 | make sure help_only gets set. */ | |
72b04ca4 | 1435 | CPP_OPTION (pfile, help_only) = 1; |
7a6882ca | 1436 | break; |
1353d9f7 | 1437 | |
1438 | /* --version inhibits compilation, -version doesn't. -v means | |
1439 | verbose and -version. Historical reasons, don't ask. */ | |
bcc40c63 | 1440 | case OPT__version: |
72b04ca4 | 1441 | CPP_OPTION (pfile, help_only) = 1; |
a19b9668 | 1442 | pfile->print_version = 1; |
1443 | break; | |
1353d9f7 | 1444 | case OPT_v: |
1445 | CPP_OPTION (pfile, verbose) = 1; | |
a19b9668 | 1446 | pfile->print_version = 1; |
1447 | break; | |
1353d9f7 | 1448 | case OPT_version: |
a19b9668 | 1449 | pfile->print_version = 1; |
bcc40c63 | 1450 | break; |
1353d9f7 | 1451 | |
bcc40c63 | 1452 | case OPT_C: |
2ff3ad1d | 1453 | CPP_OPTION (pfile, discard_comments) = 0; |
bcc40c63 | 1454 | break; |
1455 | case OPT_P: | |
2ff3ad1d | 1456 | CPP_OPTION (pfile, no_line_commands) = 1; |
bcc40c63 | 1457 | break; |
8d1752de | 1458 | case OPT_dollar: /* Don't include $ in identifiers. */ |
2ff3ad1d | 1459 | CPP_OPTION (pfile, dollars_in_ident) = 0; |
bcc40c63 | 1460 | break; |
1461 | case OPT_H: | |
2ff3ad1d | 1462 | CPP_OPTION (pfile, print_include_names) = 1; |
bcc40c63 | 1463 | break; |
1464 | case OPT_D: | |
c4abf88d | 1465 | new_pending_directive (pend, arg, cpp_define); |
bcc40c63 | 1466 | break; |
1467 | case OPT_pedantic_errors: | |
2ff3ad1d | 1468 | CPP_OPTION (pfile, pedantic_errors) = 1; |
bcc40c63 | 1469 | /* fall through */ |
1470 | case OPT_pedantic: | |
2ff3ad1d | 1471 | CPP_OPTION (pfile, pedantic) = 1; |
bcc40c63 | 1472 | break; |
bcc40c63 | 1473 | case OPT_trigraphs: |
2ff3ad1d | 1474 | CPP_OPTION (pfile, trigraphs) = 1; |
bcc40c63 | 1475 | break; |
1476 | case OPT_plus: | |
2ff3ad1d | 1477 | CPP_OPTION (pfile, cplusplus) = 1; |
1478 | CPP_OPTION (pfile, cplusplus_comments) = 1; | |
bcc40c63 | 1479 | break; |
1480 | case OPT_remap: | |
2ff3ad1d | 1481 | CPP_OPTION (pfile, remap) = 1; |
bcc40c63 | 1482 | break; |
1483 | case OPT_iprefix: | |
2ff3ad1d | 1484 | CPP_OPTION (pfile, include_prefix) = arg; |
1485 | CPP_OPTION (pfile, include_prefix_len) = strlen (arg); | |
bcc40c63 | 1486 | break; |
1487 | case OPT_lang_c: | |
fad0ffbb | 1488 | set_lang (pfile, CLK_GNUC89); |
bcc40c63 | 1489 | break; |
bcc40c63 | 1490 | case OPT_lang_cplusplus: |
fad0ffbb | 1491 | set_lang (pfile, CLK_GNUCXX); |
bcc40c63 | 1492 | break; |
c4abf88d | 1493 | case OPT_lang_objc: |
fad0ffbb | 1494 | set_lang (pfile, CLK_OBJC); |
bcc40c63 | 1495 | break; |
fad0ffbb | 1496 | case OPT_lang_objcplusplus: |
1497 | set_lang (pfile, CLK_OBJCXX); | |
bcc40c63 | 1498 | break; |
fad0ffbb | 1499 | case OPT_lang_asm: |
1500 | set_lang (pfile, CLK_ASM); | |
bcc40c63 | 1501 | break; |
fad0ffbb | 1502 | case OPT_std_cplusplus98: |
1503 | set_lang (pfile, CLK_CXX98); | |
bcc40c63 | 1504 | break; |
1505 | case OPT_std_gnu89: | |
fad0ffbb | 1506 | set_lang (pfile, CLK_GNUC89); |
bcc40c63 | 1507 | break; |
1508 | case OPT_std_gnu9x: | |
1509 | case OPT_std_gnu99: | |
fad0ffbb | 1510 | set_lang (pfile, CLK_GNUC99); |
bcc40c63 | 1511 | break; |
1512 | case OPT_std_iso9899_199409: | |
fad0ffbb | 1513 | set_lang (pfile, CLK_STDC94); |
1514 | break; | |
bcc40c63 | 1515 | case OPT_std_iso9899_1990: |
1516 | case OPT_std_c89: | |
27fdc0b6 | 1517 | case OPT_lang_c89: |
fad0ffbb | 1518 | set_lang (pfile, CLK_STDC89); |
bcc40c63 | 1519 | break; |
1520 | case OPT_std_iso9899_199x: | |
1521 | case OPT_std_iso9899_1999: | |
1522 | case OPT_std_c9x: | |
1523 | case OPT_std_c99: | |
fad0ffbb | 1524 | set_lang (pfile, CLK_STDC99); |
1525 | break; | |
1526 | case OPT_nostdinc: | |
1527 | /* -nostdinc causes no default include directories. | |
1528 | You must specify all include-file directories with -I. */ | |
1529 | CPP_OPTION (pfile, no_standard_includes) = 1; | |
1530 | break; | |
1531 | case OPT_nostdincplusplus: | |
2c0e001b | 1532 | /* -nostdinc++ causes no default C++-specific include directories. */ |
fad0ffbb | 1533 | CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1; |
bcc40c63 | 1534 | break; |
1535 | case OPT_o: | |
7e555f5f | 1536 | if (CPP_OPTION (pfile, out_fname) == NULL) |
1537 | CPP_OPTION (pfile, out_fname) = arg; | |
1538 | else | |
9fa36617 | 1539 | { |
cb8bacb6 | 1540 | cpp_fatal (pfile, "output filename specified twice"); |
bcc40c63 | 1541 | return argc; |
1542 | } | |
bcc40c63 | 1543 | break; |
1544 | case OPT_d: | |
1545 | /* Args to -d specify what parts of macros to dump. | |
1546 | Silently ignore unrecognised options; they may | |
8d1752de | 1547 | be aimed at the compiler proper. */ |
bcc40c63 | 1548 | { |
1549 | char c; | |
2ff3ad1d | 1550 | |
bcc40c63 | 1551 | while ((c = *arg++) != '\0') |
1552 | switch (c) | |
1553 | { | |
1554 | case 'M': | |
2ff3ad1d | 1555 | CPP_OPTION (pfile, dump_macros) = dump_only; |
1556 | CPP_OPTION (pfile, no_output) = 1; | |
9fa36617 | 1557 | break; |
1558 | case 'N': | |
2ff3ad1d | 1559 | CPP_OPTION (pfile, dump_macros) = dump_names; |
9fa36617 | 1560 | break; |
1561 | case 'D': | |
2ff3ad1d | 1562 | CPP_OPTION (pfile, dump_macros) = dump_definitions; |
9fa36617 | 1563 | break; |
1564 | case 'I': | |
2ff3ad1d | 1565 | CPP_OPTION (pfile, dump_includes) = 1; |
9fa36617 | 1566 | break; |
1567 | } | |
bcc40c63 | 1568 | } |
1569 | break; | |
af808d7d | 1570 | |
bcc40c63 | 1571 | case OPT_MG: |
2ff3ad1d | 1572 | CPP_OPTION (pfile, print_deps_missing_files) = 1; |
bcc40c63 | 1573 | break; |
1574 | case OPT_M: | |
af808d7d | 1575 | CPP_OPTION (pfile, print_deps) = 2; |
1576 | break; | |
bcc40c63 | 1577 | case OPT_MM: |
af808d7d | 1578 | CPP_OPTION (pfile, print_deps) = 1; |
bcc40c63 | 1579 | break; |
af808d7d | 1580 | case OPT_MF: |
1581 | CPP_OPTION (pfile, deps_file) = arg; | |
1582 | break; | |
1583 | case OPT_MP: | |
2e399de6 | 1584 | CPP_OPTION (pfile, deps_phony_targets) = 1; |
1585 | break; | |
7b4b68f2 | 1586 | case OPT_MQ: |
3d7dca39 | 1587 | case OPT_MT: |
7b4b68f2 | 1588 | /* Add a target. -MQ quotes for Make. */ |
1589 | deps_add_target (pfile->deps, arg, opt_code == OPT_MQ); | |
3d7dca39 | 1590 | break; |
1591 | ||
9ec9f6b6 | 1592 | /* -MD and -MMD for cpp0 are deprecated and undocumented |
1593 | (use -M or -MM with -MF instead), and probably should be | |
1594 | removed with the next major GCC version. For the moment | |
1595 | we allow these for the benefit of Automake 1.4, which | |
1596 | uses these when dependency tracking is enabled. Automake | |
1597 | 1.5 will fix this. */ | |
1598 | case OPT_MD: | |
1599 | CPP_OPTION (pfile, print_deps) = 2; | |
1600 | CPP_OPTION (pfile, deps_file) = arg; | |
1601 | break; | |
1602 | case OPT_MMD: | |
1603 | CPP_OPTION (pfile, print_deps) = 1; | |
1604 | CPP_OPTION (pfile, deps_file) = arg; | |
1605 | break; | |
1606 | ||
bcc40c63 | 1607 | case OPT_A: |
77ee202d | 1608 | if (arg[0] == '-') |
9fa36617 | 1609 | { |
77ee202d | 1610 | /* -A with an argument beginning with '-' acts as |
1611 | #unassert on whatever immediately follows the '-'. | |
1612 | If "-" is the whole argument, we eliminate all | |
1613 | predefined macros and assertions, including those | |
1614 | that were specified earlier on the command line. | |
1615 | That way we can get rid of any that were passed | |
1616 | automatically in from GCC. */ | |
1617 | ||
1618 | if (arg[1] == '\0') | |
9fa36617 | 1619 | { |
c808d026 | 1620 | free_chain (pend->directive_head); |
466b3f58 | 1621 | pend->directive_head = NULL; |
1622 | pend->directive_tail = NULL; | |
9fa36617 | 1623 | } |
77ee202d | 1624 | else |
466b3f58 | 1625 | new_pending_directive (pend, arg + 1, cpp_unassert); |
6d71dc85 | 1626 | } |
77ee202d | 1627 | else |
466b3f58 | 1628 | new_pending_directive (pend, arg, cpp_assert); |
bcc40c63 | 1629 | break; |
1630 | case OPT_U: | |
466b3f58 | 1631 | new_pending_directive (pend, arg, cpp_undef); |
bcc40c63 | 1632 | break; |
1633 | case OPT_I: /* Add directory to path for includes. */ | |
1634 | if (!strcmp (arg, "-")) | |
1635 | { | |
1636 | /* -I- means: | |
1637 | Use the preceding -I directories for #include "..." | |
1638 | but not #include <...>. | |
1639 | Don't search the directory of the present file | |
1640 | for #include "...". (Note that -I. -I- is not the same as | |
1641 | the default setup; -I. uses the compiler's working dir.) */ | |
2ff3ad1d | 1642 | if (! CPP_OPTION (pfile, ignore_srcdir)) |
bcc40c63 | 1643 | { |
2ff3ad1d | 1644 | pend->quote_head = pend->brack_head; |
1645 | pend->quote_tail = pend->brack_tail; | |
1646 | pend->brack_head = 0; | |
1647 | pend->brack_tail = 0; | |
1648 | CPP_OPTION (pfile, ignore_srcdir) = 1; | |
bcc40c63 | 1649 | } |
1650 | else | |
1651 | { | |
1652 | cpp_fatal (pfile, "-I- specified twice"); | |
1653 | return argc; | |
1654 | } | |
1655 | } | |
1656 | else | |
466b3f58 | 1657 | append_include_chain (pfile, xstrdup (arg), BRACKET, 0); |
bcc40c63 | 1658 | break; |
1659 | case OPT_isystem: | |
1660 | /* Add directory to beginning of system include path, as a system | |
8d1752de | 1661 | include directory. */ |
466b3f58 | 1662 | append_include_chain (pfile, xstrdup (arg), SYSTEM, 0); |
bcc40c63 | 1663 | break; |
1664 | case OPT_include: | |
bcc40c63 | 1665 | case OPT_imacros: |
1666 | { | |
1667 | struct pending_option *o = (struct pending_option *) | |
1668 | xmalloc (sizeof (struct pending_option)); | |
1669 | o->arg = arg; | |
1670 | o->next = NULL; | |
2ff3ad1d | 1671 | |
fe560637 | 1672 | if (opt_code == OPT_include) |
1673 | APPEND (pend, include, o); | |
1674 | else | |
1675 | APPEND (pend, imacros, o); | |
bcc40c63 | 1676 | } |
1677 | break; | |
1678 | case OPT_iwithprefix: | |
1679 | /* Add directory to end of path for includes, | |
1680 | with the default prefix at the front of its name. */ | |
1681 | /* fall through */ | |
1682 | case OPT_iwithprefixbefore: | |
1683 | /* Add directory to main path for includes, | |
1684 | with the default prefix at the front of its name. */ | |
1685 | { | |
1686 | char *fname; | |
1687 | int len; | |
2ff3ad1d | 1688 | |
bcc40c63 | 1689 | len = strlen (arg); |
2ff3ad1d | 1690 | |
1691 | if (CPP_OPTION (pfile, include_prefix) != 0) | |
bcc40c63 | 1692 | { |
2ff3ad1d | 1693 | size_t ipl = CPP_OPTION (pfile, include_prefix_len); |
1694 | fname = xmalloc (ipl + len + 1); | |
1695 | memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl); | |
1696 | memcpy (fname + ipl, arg, len + 1); | |
bcc40c63 | 1697 | } |
472679ed | 1698 | else if (cpp_GCC_INCLUDE_DIR_len) |
bcc40c63 | 1699 | { |
472679ed | 1700 | fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1); |
1701 | memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len); | |
1702 | memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1); | |
bcc40c63 | 1703 | } |
472679ed | 1704 | else |
1705 | fname = xstrdup (arg); | |
2ff3ad1d | 1706 | |
466b3f58 | 1707 | append_include_chain (pfile, fname, |
bcc40c63 | 1708 | opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0); |
1709 | } | |
1710 | break; | |
1711 | case OPT_idirafter: | |
1712 | /* Add directory to end of path for includes. */ | |
466b3f58 | 1713 | append_include_chain (pfile, xstrdup (arg), AFTER, 0); |
bcc40c63 | 1714 | break; |
1715 | case OPT_W: | |
8d1752de | 1716 | /* Silently ignore unrecognised options. */ |
bcc40c63 | 1717 | if (!strcmp (argv[i], "-Wall")) |
9fa36617 | 1718 | { |
2ff3ad1d | 1719 | CPP_OPTION (pfile, warn_trigraphs) = 1; |
1720 | CPP_OPTION (pfile, warn_comments) = 1; | |
9fa36617 | 1721 | } |
bcc40c63 | 1722 | else if (!strcmp (argv[i], "-Wtraditional")) |
ef33b55c | 1723 | CPP_OPTION (pfile, warn_traditional) = 1; |
bcc40c63 | 1724 | else if (!strcmp (argv[i], "-Wtrigraphs")) |
2ff3ad1d | 1725 | CPP_OPTION (pfile, warn_trigraphs) = 1; |
bcc40c63 | 1726 | else if (!strcmp (argv[i], "-Wcomment")) |
2ff3ad1d | 1727 | CPP_OPTION (pfile, warn_comments) = 1; |
bcc40c63 | 1728 | else if (!strcmp (argv[i], "-Wcomments")) |
2ff3ad1d | 1729 | CPP_OPTION (pfile, warn_comments) = 1; |
bcc40c63 | 1730 | else if (!strcmp (argv[i], "-Wundef")) |
2ff3ad1d | 1731 | CPP_OPTION (pfile, warn_undef) = 1; |
bcc40c63 | 1732 | else if (!strcmp (argv[i], "-Wimport")) |
2ff3ad1d | 1733 | CPP_OPTION (pfile, warn_import) = 1; |
bcc40c63 | 1734 | else if (!strcmp (argv[i], "-Werror")) |
2ff3ad1d | 1735 | CPP_OPTION (pfile, warnings_are_errors) = 1; |
02c09dab | 1736 | else if (!strcmp (argv[i], "-Wsystem-headers")) |
1737 | CPP_OPTION (pfile, warn_system_headers) = 1; | |
bcc40c63 | 1738 | else if (!strcmp (argv[i], "-Wno-traditional")) |
ef33b55c | 1739 | CPP_OPTION (pfile, warn_traditional) = 0; |
bcc40c63 | 1740 | else if (!strcmp (argv[i], "-Wno-trigraphs")) |
2ff3ad1d | 1741 | CPP_OPTION (pfile, warn_trigraphs) = 0; |
bcc40c63 | 1742 | else if (!strcmp (argv[i], "-Wno-comment")) |
2ff3ad1d | 1743 | CPP_OPTION (pfile, warn_comments) = 0; |
bcc40c63 | 1744 | else if (!strcmp (argv[i], "-Wno-comments")) |
2ff3ad1d | 1745 | CPP_OPTION (pfile, warn_comments) = 0; |
bcc40c63 | 1746 | else if (!strcmp (argv[i], "-Wno-undef")) |
2ff3ad1d | 1747 | CPP_OPTION (pfile, warn_undef) = 0; |
bcc40c63 | 1748 | else if (!strcmp (argv[i], "-Wno-import")) |
2ff3ad1d | 1749 | CPP_OPTION (pfile, warn_import) = 0; |
bcc40c63 | 1750 | else if (!strcmp (argv[i], "-Wno-error")) |
2ff3ad1d | 1751 | CPP_OPTION (pfile, warnings_are_errors) = 0; |
02c09dab | 1752 | else if (!strcmp (argv[i], "-Wno-system-headers")) |
1753 | CPP_OPTION (pfile, warn_system_headers) = 0; | |
a182c763 | 1754 | else if (! ignore) |
1755 | return i; | |
bcc40c63 | 1756 | break; |
1757 | } | |
1758 | } | |
6d71dc85 | 1759 | return i + 1; |
bcc40c63 | 1760 | } |
9fa36617 | 1761 | |
6d71dc85 | 1762 | /* Handle command-line options in (argc, argv). |
1763 | Can be called multiple times, to handle multiple sets of options. | |
1764 | Returns if an unrecognized option is seen. | |
1765 | Returns number of strings consumed. */ | |
6d71dc85 | 1766 | int |
1767 | cpp_handle_options (pfile, argc, argv) | |
1768 | cpp_reader *pfile; | |
1769 | int argc; | |
1770 | char **argv; | |
1771 | { | |
1772 | int i; | |
1773 | int strings_processed; | |
bcc40c63 | 1774 | |
6d71dc85 | 1775 | for (i = 0; i < argc; i += strings_processed) |
1776 | { | |
a182c763 | 1777 | strings_processed = cpp_handle_option (pfile, argc - i, argv + i, 1); |
6d71dc85 | 1778 | if (strings_processed == 0) |
1779 | break; | |
1780 | } | |
af808d7d | 1781 | |
6d71dc85 | 1782 | return i; |
1783 | } | |
1784 | ||
af808d7d | 1785 | /* Extra processing when all options are parsed, after all calls to |
1786 | cpp_handle_option[s]. Consistency checks etc. */ | |
1787 | void | |
1788 | cpp_post_options (pfile) | |
1789 | cpp_reader *pfile; | |
1790 | { | |
a19b9668 | 1791 | if (pfile->print_version) |
1792 | { | |
1793 | fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string); | |
1794 | #ifdef TARGET_VERSION | |
1795 | TARGET_VERSION; | |
1796 | #endif | |
1797 | fputc ('\n', stderr); | |
1798 | } | |
1799 | ||
7e555f5f | 1800 | /* Canonicalize in_fname and out_fname. We guarantee they are not |
1801 | NULL, and that the empty string represents stdin / stdout. */ | |
1802 | if (CPP_OPTION (pfile, in_fname) == NULL | |
1803 | || !strcmp (CPP_OPTION (pfile, in_fname), "-")) | |
1804 | CPP_OPTION (pfile, in_fname) = ""; | |
1805 | ||
1806 | if (CPP_OPTION (pfile, out_fname) == NULL | |
1807 | || !strcmp (CPP_OPTION (pfile, out_fname), "-")) | |
1808 | CPP_OPTION (pfile, out_fname) = ""; | |
1809 | ||
af808d7d | 1810 | /* -Wtraditional is not useful in C++ mode. */ |
1811 | if (CPP_OPTION (pfile, cplusplus)) | |
1812 | CPP_OPTION (pfile, warn_traditional) = 0; | |
1813 | ||
2c0e001b | 1814 | /* Set this if it hasn't been set already. */ |
af808d7d | 1815 | if (CPP_OPTION (pfile, user_label_prefix) == NULL) |
1816 | CPP_OPTION (pfile, user_label_prefix) = USER_LABEL_PREFIX; | |
1817 | ||
946ce1b7 | 1818 | /* Permanently disable macro expansion if we are rescanning |
1819 | preprocessed text. */ | |
1820 | if (CPP_OPTION (pfile, preprocessed)) | |
1821 | pfile->state.prevent_expansion = 1; | |
1822 | ||
af808d7d | 1823 | /* We need to do this after option processing and before |
1824 | cpp_start_read, as cppmain.c relies on the options->no_output to | |
1825 | set its callbacks correctly before calling cpp_start_read. */ | |
1826 | init_dependency_output (pfile); | |
1827 | ||
308f302c | 1828 | /* After checking the environment variables, check if -M or -MM has |
1829 | not been specified, but other -M options have. */ | |
1830 | if (CPP_OPTION (pfile, print_deps) == 0 && | |
1831 | (CPP_OPTION (pfile, print_deps_missing_files) | |
1832 | || CPP_OPTION (pfile, deps_file) | |
1833 | || CPP_OPTION (pfile, deps_phony_targets))) | |
1834 | cpp_fatal (pfile, "you must additionally specify either -M or -MM"); | |
af808d7d | 1835 | } |
1836 | ||
5ca8af9f | 1837 | /* Set up dependency-file output. On exit, if print_deps is non-zero |
1838 | then deps_file is not NULL; stdout is the empty string. */ | |
b3a8144e | 1839 | static void |
1840 | init_dependency_output (pfile) | |
1841 | cpp_reader *pfile; | |
1842 | { | |
1843 | char *spec, *s, *output_file; | |
1844 | ||
1845 | /* Either of two environment variables can specify output of deps. | |
1846 | Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET", | |
1847 | where OUTPUT_FILE is the file to write deps info to | |
1848 | and DEPS_TARGET is the target to mention in the deps. */ | |
1849 | ||
1850 | if (CPP_OPTION (pfile, print_deps) == 0) | |
1851 | { | |
1852 | spec = getenv ("DEPENDENCIES_OUTPUT"); | |
1853 | if (spec) | |
1854 | CPP_OPTION (pfile, print_deps) = 1; | |
1855 | else | |
1856 | { | |
1857 | spec = getenv ("SUNPRO_DEPENDENCIES"); | |
1858 | if (spec) | |
1859 | CPP_OPTION (pfile, print_deps) = 2; | |
1860 | else | |
1861 | return; | |
1862 | } | |
1863 | ||
1864 | /* Find the space before the DEPS_TARGET, if there is one. */ | |
1865 | s = strchr (spec, ' '); | |
1866 | if (s) | |
1867 | { | |
1868 | /* Let the caller perform MAKE quoting. */ | |
1869 | deps_add_target (pfile->deps, s + 1, 0); | |
1870 | output_file = (char *) xmalloc (s - spec + 1); | |
1871 | memcpy (output_file, spec, s - spec); | |
1872 | output_file[s - spec] = 0; | |
1873 | } | |
1874 | else | |
1875 | output_file = spec; | |
1876 | ||
9d4c611a | 1877 | /* Command line -MF overrides environment variables and default. */ |
1878 | if (CPP_OPTION (pfile, deps_file) == 0) | |
1879 | CPP_OPTION (pfile, deps_file) = output_file; | |
1880 | ||
b3a8144e | 1881 | CPP_OPTION (pfile, print_deps_append) = 1; |
1882 | } | |
9d4c611a | 1883 | else if (CPP_OPTION (pfile, deps_file) == 0) |
49eb929e | 1884 | /* If -M or -MM was seen without -MF, default output to wherever |
1885 | was specified with -o. out_fname is non-NULL here. */ | |
9d4c611a | 1886 | CPP_OPTION (pfile, deps_file) = CPP_OPTION (pfile, out_fname); |
5ca8af9f | 1887 | |
49eb929e | 1888 | /* When doing dependencies, suppress normal preprocessed output. |
1889 | Still do -dM, -dI etc. as e.g. glibc depends on this. */ | |
5ca8af9f | 1890 | CPP_OPTION (pfile, no_output) = 1; |
b3a8144e | 1891 | } |
1892 | ||
e484a1cc | 1893 | /* Handle --help output. */ |
6d71dc85 | 1894 | static void |
1895 | print_help () | |
1896 | { | |
6219c3ed | 1897 | /* To keep the lines from getting too long for some compilers, limit |
2c0e001b | 1898 | to about 500 characters (6 lines) per chunk. */ |
6d71dc85 | 1899 | fputs (_("\ |
1900 | Switches:\n\ | |
1901 | -include <file> Include the contents of <file> before other files\n\ | |
1902 | -imacros <file> Accept definition of macros in <file>\n\ | |
1903 | -iprefix <path> Specify <path> as a prefix for next two options\n\ | |
1904 | -iwithprefix <dir> Add <dir> to the end of the system include path\n\ | |
1905 | -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\ | |
1906 | -isystem <dir> Add <dir> to the start of the system include path\n\ | |
6219c3ed | 1907 | "), stdout); |
1908 | fputs (_("\ | |
6d71dc85 | 1909 | -idirafter <dir> Add <dir> to the end of the system include path\n\ |
1910 | -I <dir> Add <dir> to the end of the main include path\n\ | |
bcc40c63 | 1911 | -I- Fine-grained include path control; see info docs\n\ |
6d71dc85 | 1912 | -nostdinc Do not search system include directories\n\ |
1913 | (dirs specified with -isystem will still be used)\n\ | |
1914 | -nostdinc++ Do not search system include directories for C++\n\ | |
1915 | -o <file> Put output into <file>\n\ | |
6219c3ed | 1916 | "), stdout); |
1917 | fputs (_("\ | |
f80e83a9 | 1918 | -pedantic Issue all warnings demanded by strict ISO C\n\ |
bcc40c63 | 1919 | -pedantic-errors Issue -pedantic warnings as errors instead\n\ |
f80e83a9 | 1920 | -trigraphs Support ISO C trigraphs\n\ |
6d71dc85 | 1921 | -lang-c Assume that the input sources are in C\n\ |
1922 | -lang-c89 Assume that the input sources are in C89\n\ | |
6219c3ed | 1923 | "), stdout); |
1924 | fputs (_("\ | |
241e762e | 1925 | -lang-c++ Assume that the input sources are in C++\n\ |
6d71dc85 | 1926 | -lang-objc Assume that the input sources are in ObjectiveC\n\ |
1927 | -lang-objc++ Assume that the input sources are in ObjectiveC++\n\ | |
1928 | -lang-asm Assume that the input sources are in assembler\n\ | |
6219c3ed | 1929 | "), stdout); |
1930 | fputs (_("\ | |
6d71dc85 | 1931 | -std=<std name> Specify the conformance standard; one of:\n\ |
4960a83f | 1932 | gnu89, gnu99, c89, c99, iso9899:1990,\n\ |
1933 | iso9899:199409, iso9899:1999\n\ | |
6d71dc85 | 1934 | -+ Allow parsing of C++ style features\n\ |
1935 | -w Inhibit warning messages\n\ | |
1936 | -Wtrigraphs Warn if trigraphs are encountered\n\ | |
1937 | -Wno-trigraphs Do not warn about trigraphs\n\ | |
1938 | -Wcomment{s} Warn if one comment starts inside another\n\ | |
6219c3ed | 1939 | "), stdout); |
1940 | fputs (_("\ | |
6d71dc85 | 1941 | -Wno-comment{s} Do not warn about comments\n\ |
241e762e | 1942 | -Wtraditional Warn about features not present in traditional C\n\ |
1943 | -Wno-traditional Do not warn about traditional C\n\ | |
6d71dc85 | 1944 | -Wundef Warn if an undefined macro is used by #if\n\ |
1945 | -Wno-undef Do not warn about testing undefined macros\n\ | |
1946 | -Wimport Warn about the use of the #import directive\n\ | |
6219c3ed | 1947 | "), stdout); |
1948 | fputs (_("\ | |
6d71dc85 | 1949 | -Wno-import Do not warn about the use of #import\n\ |
1950 | -Werror Treat all warnings as errors\n\ | |
1951 | -Wno-error Do not treat warnings as errors\n\ | |
02c09dab | 1952 | -Wsystem-headers Do not suppress warnings from system headers\n\ |
1953 | -Wno-system-headers Suppress warnings from system headers\n\ | |
6d71dc85 | 1954 | -Wall Enable all preprocessor warnings\n\ |
6219c3ed | 1955 | "), stdout); |
1956 | fputs (_("\ | |
02c09dab | 1957 | -M Generate make dependencies\n\ |
1958 | -MM As -M, but ignore system header files\n\ | |
779370e8 | 1959 | -MD Generate make dependencies and compile\n\ |
1960 | -MMD As -MD, but ignore system header files\n\ | |
af808d7d | 1961 | -MF <file> Write dependency output to the given file\n\ |
6d71dc85 | 1962 | -MG Treat missing header file as generated files\n\ |
af808d7d | 1963 | "), stdout); |
1964 | fputs (_("\ | |
1965 | -MP Generate phony targets for all headers\n\ | |
1966 | -MQ <target> Add a MAKE-quoted target\n\ | |
1967 | -MT <target> Add an unquoted target\n\ | |
6219c3ed | 1968 | "), stdout); |
1969 | fputs (_("\ | |
02c09dab | 1970 | -D<macro> Define a <macro> with string '1' as its value\n\ |
1971 | -D<macro>=<val> Define a <macro> with <val> as its value\n\ | |
779370e8 | 1972 | -A<question>=<answer> Assert the <answer> to <question>\n\ |
1973 | -A-<question>=<answer> Disable the <answer> to <question>\n\ | |
6d71dc85 | 1974 | -U<macro> Undefine <macro> \n\ |
6d71dc85 | 1975 | -v Display the version number\n\ |
6219c3ed | 1976 | "), stdout); |
1977 | fputs (_("\ | |
02c09dab | 1978 | -H Print the name of header files as they are used\n\ |
1979 | -C Do not discard comments\n\ | |
6d71dc85 | 1980 | -dM Display a list of macro definitions active at end\n\ |
1981 | -dD Preserve macro definitions in output\n\ | |
1982 | -dN As -dD except that only the names are preserved\n\ | |
1983 | -dI Include #include directives in the output\n\ | |
02c09dab | 1984 | "), stdout); |
1985 | fputs (_("\ | |
f95f1608 | 1986 | -fpreprocessed Treat the input file as already preprocessed\n\ |
3b304865 | 1987 | -ftabstop=<number> Distance between tab stops for column reporting\n\ |
6d71dc85 | 1988 | -P Do not generate #line directives\n\ |
1989 | -$ Do not allow '$' in identifiers\n\ | |
779370e8 | 1990 | -remap Remap file names when including files\n\ |
bcc40c63 | 1991 | --version Display version information\n\ |
6d71dc85 | 1992 | -h or --help Display this information\n\ |
1993 | "), stdout); | |
1994 | } |