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5538ada6 | 1 | /* CPP Library. |
5e7b4e25 | 2 | Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
745b26b3 | 3 | 1999, 2000, 2001, 2002 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" | |
6de1e2a9 ZW |
26 | #include "prefix.h" |
27 | #include "intl.h" | |
9f8f4efe | 28 | #include "version.h" |
49e6c08e | 29 | #include "mkdeps.h" |
60893f43 | 30 | #include "cppdefault.h" |
6de1e2a9 | 31 | |
88ae23e7 ZW |
32 | /* Windows does not natively support inodes, and neither does MSDOS. |
33 | Cygwin's emulation can generate non-unique inodes, so don't use it. | |
ec5c56db | 34 | VMS has non-numeric inodes. */ |
88ae23e7 | 35 | #ifdef VMS |
ca47c89e DR |
36 | # define INO_T_EQ(A, B) (!memcmp (&(A), &(B), sizeof (A))) |
37 | # define INO_T_COPY(DEST, SRC) memcpy(&(DEST), &(SRC), sizeof (SRC)) | |
88ae23e7 | 38 | #else |
3943e756 | 39 | # if (defined _WIN32 && ! defined (_UWIN)) || defined __MSDOS__ |
ca47c89e | 40 | # define INO_T_EQ(A, B) 0 |
3943e756 | 41 | # else |
ca47c89e | 42 | # define INO_T_EQ(A, B) ((A) == (B)) |
3943e756 | 43 | # endif |
ca47c89e | 44 | # define INO_T_COPY(DEST, SRC) (DEST) = (SRC) |
88ae23e7 ZW |
45 | #endif |
46 | ||
4a58aab6 | 47 | /* Internal structures and prototypes. */ |
6de1e2a9 | 48 | |
4a58aab6 NB |
49 | /* A `struct pending_option' remembers one -D, -A, -U, -include, or |
50 | -imacros switch. */ | |
8be1ddca | 51 | typedef void (* cl_directive_handler) PARAMS ((cpp_reader *, const char *)); |
0b22d65c | 52 | struct pending_option |
6de1e2a9 | 53 | { |
0b22d65c | 54 | struct pending_option *next; |
7ceb3598 | 55 | const char *arg; |
40eac643 | 56 | cl_directive_handler handler; |
6de1e2a9 | 57 | }; |
0b22d65c | 58 | |
88ae23e7 | 59 | /* The `pending' structure accumulates all the options that are not |
f5e99456 | 60 | actually processed until we hit cpp_read_main_file. It consists of |
88ae23e7 | 61 | several lists, one for each type of option. We keep both head and |
4a58aab6 | 62 | tail pointers for quick insertion. */ |
88ae23e7 ZW |
63 | struct cpp_pending |
64 | { | |
40eac643 | 65 | struct pending_option *directive_head, *directive_tail; |
88ae23e7 | 66 | |
591e15a1 NB |
67 | struct search_path *quote_head, *quote_tail; |
68 | struct search_path *brack_head, *brack_tail; | |
69 | struct search_path *systm_head, *systm_tail; | |
70 | struct search_path *after_head, *after_tail; | |
88ae23e7 ZW |
71 | |
72 | struct pending_option *imacros_head, *imacros_tail; | |
73 | struct pending_option *include_head, *include_tail; | |
74 | }; | |
75 | ||
0b22d65c ZW |
76 | #ifdef __STDC__ |
77 | #define APPEND(pend, list, elt) \ | |
78 | do { if (!(pend)->list##_head) (pend)->list##_head = (elt); \ | |
79 | else (pend)->list##_tail->next = (elt); \ | |
80 | (pend)->list##_tail = (elt); \ | |
81 | } while (0) | |
82 | #else | |
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 | #endif | |
6de1e2a9 | 89 | |
0b22d65c | 90 | static void path_include PARAMS ((cpp_reader *, |
0b22d65c | 91 | char *, int)); |
674c3b40 | 92 | static void init_library PARAMS ((void)); |
7ca3d2b1 | 93 | static void init_builtins PARAMS ((cpp_reader *)); |
17645b15 | 94 | static void mark_named_operators PARAMS ((cpp_reader *)); |
0b22d65c | 95 | static void append_include_chain PARAMS ((cpp_reader *, |
c45da1ca | 96 | char *, int, int)); |
002ee64f | 97 | static struct search_path * remove_dup_dir PARAMS ((cpp_reader *, |
591e15a1 | 98 | struct search_path *)); |
002ee64f | 99 | static struct search_path * remove_dup_dirs PARAMS ((cpp_reader *, |
591e15a1 | 100 | struct search_path *)); |
ae79697b | 101 | static void merge_include_chains PARAMS ((cpp_reader *)); |
d7bc7a98 NB |
102 | static bool push_include PARAMS ((cpp_reader *, |
103 | struct pending_option *)); | |
104 | static void free_chain PARAMS ((struct pending_option *)); | |
dd07b884 | 105 | static void set_lang PARAMS ((cpp_reader *, enum c_lang)); |
7ca3d2b1 NB |
106 | static void init_dependency_output PARAMS ((cpp_reader *)); |
107 | static void init_standard_includes PARAMS ((cpp_reader *)); | |
f5e99456 | 108 | static void read_original_filename PARAMS ((cpp_reader *)); |
2c0accc9 | 109 | static void new_pending_directive PARAMS ((struct cpp_pending *, |
40eac643 NB |
110 | const char *, |
111 | cl_directive_handler)); | |
7ca3d2b1 | 112 | static void output_deps PARAMS ((cpp_reader *)); |
e23c0ba3 | 113 | static int parse_option PARAMS ((const char *)); |
6de1e2a9 | 114 | |
cb773845 ZW |
115 | /* Fourth argument to append_include_chain: chain to use. |
116 | Note it's never asked to append to the quote chain. */ | |
117 | enum { BRACKET = 0, SYSTEM, AFTER }; | |
6de1e2a9 | 118 | |
61d0346d NB |
119 | /* If we have designated initializers (GCC >2.7) these tables can be |
120 | initialized, constant data. Otherwise, they have to be filled in at | |
12cf91fe | 121 | runtime. */ |
61d0346d | 122 | #if HAVE_DESIGNATED_INITIALIZERS |
a9ae4483 | 123 | |
4a58aab6 | 124 | #define init_trigraph_map() /* Nothing. */ |
61d0346d | 125 | #define TRIGRAPH_MAP \ |
562a5c27 | 126 | __extension__ const uchar _cpp_trigraph_map[UCHAR_MAX + 1] = { |
61d0346d | 127 | |
a9ae4483 | 128 | #define END }; |
455d2586 | 129 | #define s(p, v) [p] = v, |
61d0346d | 130 | |
a9ae4483 | 131 | #else |
61d0346d | 132 | |
562a5c27 | 133 | #define TRIGRAPH_MAP uchar _cpp_trigraph_map[UCHAR_MAX + 1] = { 0 }; \ |
61d0346d NB |
134 | static void init_trigraph_map PARAMS ((void)) { \ |
135 | unsigned char *x = _cpp_trigraph_map; | |
136 | ||
ae79697b | 137 | #define END } |
455d2586 | 138 | #define s(p, v) x[p] = v; |
61d0346d | 139 | |
a9ae4483 | 140 | #endif |
6de1e2a9 | 141 | |
61d0346d NB |
142 | TRIGRAPH_MAP |
143 | s('=', '#') s(')', ']') s('!', '|') | |
144 | s('(', '[') s('\'', '^') s('>', '}') | |
145 | s('/', '\\') s('<', '{') s('-', '~') | |
146 | END | |
147 | ||
a9ae4483 | 148 | #undef s |
455d2586 | 149 | #undef END |
61d0346d | 150 | #undef TRIGRAPH_MAP |
6de1e2a9 ZW |
151 | |
152 | /* Given a colon-separated list of file names PATH, | |
153 | add all the names to the search path for include files. */ | |
6de1e2a9 | 154 | static void |
e33f6253 | 155 | path_include (pfile, list, path) |
6de1e2a9 | 156 | cpp_reader *pfile; |
0b22d65c ZW |
157 | char *list; |
158 | int path; | |
6de1e2a9 | 159 | { |
0b22d65c | 160 | char *p, *q, *name; |
6de1e2a9 | 161 | |
0b22d65c | 162 | p = list; |
6de1e2a9 | 163 | |
0b22d65c ZW |
164 | do |
165 | { | |
6de1e2a9 | 166 | /* Find the end of this name. */ |
0b22d65c | 167 | q = p; |
6de1e2a9 | 168 | while (*q != 0 && *q != PATH_SEPARATOR) q++; |
0b22d65c ZW |
169 | if (q == p) |
170 | { | |
171 | /* An empty name in the path stands for the current directory. */ | |
172 | name = (char *) xmalloc (2); | |
173 | name[0] = '.'; | |
174 | name[1] = 0; | |
175 | } | |
176 | else | |
177 | { | |
178 | /* Otherwise use the directory that is named. */ | |
179 | name = (char *) xmalloc (q - p + 1); | |
180 | memcpy (name, p, q - p); | |
181 | name[q - p] = 0; | |
182 | } | |
6de1e2a9 | 183 | |
e33f6253 | 184 | append_include_chain (pfile, name, path, 0); |
6de1e2a9 ZW |
185 | |
186 | /* Advance past this name. */ | |
0b22d65c | 187 | if (*q == 0) |
6de1e2a9 | 188 | break; |
0b22d65c ZW |
189 | p = q + 1; |
190 | } | |
191 | while (1); | |
192 | } | |
193 | ||
bef985f3 | 194 | /* Append DIR to include path PATH. DIR must be allocated on the |
5d8ebbd8 NB |
195 | heap; this routine takes responsibility for freeing it. CXX_AWARE |
196 | is non-zero if the header contains extern "C" guards for C++, | |
197 | otherwise it is zero. */ | |
0b22d65c | 198 | static void |
e33f6253 | 199 | append_include_chain (pfile, dir, path, cxx_aware) |
0b22d65c | 200 | cpp_reader *pfile; |
0b22d65c ZW |
201 | char *dir; |
202 | int path; | |
39e5db1a | 203 | int cxx_aware; |
0b22d65c | 204 | { |
e33f6253 | 205 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
591e15a1 | 206 | struct search_path *new; |
0b22d65c ZW |
207 | struct stat st; |
208 | unsigned int len; | |
209 | ||
f9200da2 | 210 | if (*dir == '\0') |
bef985f3 NB |
211 | { |
212 | free (dir); | |
213 | dir = xstrdup ("."); | |
214 | } | |
b0699dad | 215 | _cpp_simplify_pathname (dir); |
bef985f3 | 216 | |
0b22d65c ZW |
217 | if (stat (dir, &st)) |
218 | { | |
f9200da2 | 219 | /* Dirs that don't exist are silently ignored. */ |
0b22d65c | 220 | if (errno != ENOENT) |
ebef4e8c | 221 | cpp_errno (pfile, DL_ERROR, dir); |
ae79697b | 222 | else if (CPP_OPTION (pfile, verbose)) |
041c3194 | 223 | fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir); |
bef985f3 | 224 | free (dir); |
0b22d65c ZW |
225 | return; |
226 | } | |
227 | ||
228 | if (!S_ISDIR (st.st_mode)) | |
229 | { | |
ebef4e8c | 230 | cpp_error_with_line (pfile, DL_ERROR, 0, 0, "%s: Not a directory", dir); |
bef985f3 | 231 | free (dir); |
0b22d65c ZW |
232 | return; |
233 | } | |
234 | ||
235 | len = strlen (dir); | |
236 | if (len > pfile->max_include_len) | |
237 | pfile->max_include_len = len; | |
ae79697b | 238 | |
591e15a1 | 239 | new = (struct search_path *) xmalloc (sizeof (struct search_path)); |
0b22d65c | 240 | new->name = dir; |
591e15a1 | 241 | new->len = len; |
ca47c89e | 242 | INO_T_COPY (new->ino, st.st_ino); |
0b22d65c | 243 | new->dev = st.st_dev; |
4737b274 CF |
244 | /* Both systm and after include file lists should be treated as system |
245 | include files since these two lists are really just a concatenation | |
ec5c56db | 246 | of one "system" list. */ |
4737b274 | 247 | if (path == SYSTEM || path == AFTER) |
c45da1ca ZW |
248 | new->sysp = cxx_aware ? 1 : 2; |
249 | else | |
250 | new->sysp = 0; | |
0b22d65c | 251 | new->name_map = NULL; |
503cb436 | 252 | new->next = NULL; |
0b22d65c ZW |
253 | |
254 | switch (path) | |
255 | { | |
0b22d65c ZW |
256 | case BRACKET: APPEND (pend, brack, new); break; |
257 | case SYSTEM: APPEND (pend, systm, new); break; | |
258 | case AFTER: APPEND (pend, after, new); break; | |
6de1e2a9 ZW |
259 | } |
260 | } | |
261 | ||
dd69c71b NB |
262 | /* Handle a duplicated include path. PREV is the link in the chain |
263 | before the duplicate. The duplicate is removed from the chain and | |
264 | freed. Returns PREV. */ | |
002ee64f | 265 | static struct search_path * |
dd69c71b NB |
266 | remove_dup_dir (pfile, prev) |
267 | cpp_reader *pfile; | |
591e15a1 | 268 | struct search_path *prev; |
dd69c71b | 269 | { |
591e15a1 | 270 | struct search_path *cur = prev->next; |
dd69c71b NB |
271 | |
272 | if (CPP_OPTION (pfile, verbose)) | |
273 | fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name); | |
274 | ||
275 | prev->next = cur->next; | |
591e15a1 | 276 | free ((PTR) cur->name); |
dd69c71b NB |
277 | free (cur); |
278 | ||
279 | return prev; | |
280 | } | |
281 | ||
282 | /* Remove duplicate directories from a chain. Returns the tail of the | |
283 | chain, or NULL if the chain is empty. This algorithm is quadratic | |
284 | in the number of -I switches, which is acceptable since there | |
285 | aren't usually that many of them. */ | |
002ee64f | 286 | static struct search_path * |
dd69c71b NB |
287 | remove_dup_dirs (pfile, head) |
288 | cpp_reader *pfile; | |
591e15a1 | 289 | struct search_path *head; |
dd69c71b | 290 | { |
591e15a1 | 291 | struct search_path *prev = NULL, *cur, *other; |
dd69c71b NB |
292 | |
293 | for (cur = head; cur; cur = cur->next) | |
294 | { | |
295 | for (other = head; other != cur; other = other->next) | |
df383483 | 296 | if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev) |
dd69c71b | 297 | { |
002ee64f | 298 | if (cur->sysp && !other->sysp) |
dbead49c | 299 | { |
ebef4e8c NB |
300 | cpp_error (pfile, DL_WARNING, |
301 | "changing search order for system directory \"%s\"", | |
302 | cur->name); | |
dbead49c | 303 | if (strcmp (cur->name, other->name)) |
ebef4e8c NB |
304 | cpp_error (pfile, DL_WARNING, |
305 | " as it is the same as non-system directory \"%s\"", | |
306 | other->name); | |
dbead49c | 307 | else |
ebef4e8c NB |
308 | cpp_error (pfile, DL_WARNING, |
309 | " as it has already been specified as a non-system directory"); | |
dbead49c | 310 | } |
dd69c71b NB |
311 | cur = remove_dup_dir (pfile, prev); |
312 | break; | |
313 | } | |
314 | prev = cur; | |
315 | } | |
316 | ||
317 | return prev; | |
318 | } | |
319 | ||
88ae23e7 ZW |
320 | /* Merge the four include chains together in the order quote, bracket, |
321 | system, after. Remove duplicate dirs (as determined by | |
322 | INO_T_EQ()). The system_include and after_include chains are never | |
323 | referred to again after this function; all access is through the | |
5d8ebbd8 | 324 | bracket_include path. */ |
88ae23e7 | 325 | static void |
ae79697b ZW |
326 | merge_include_chains (pfile) |
327 | cpp_reader *pfile; | |
88ae23e7 | 328 | { |
591e15a1 | 329 | struct search_path *quote, *brack, *systm, *qtail; |
88ae23e7 | 330 | |
ae79697b | 331 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
88ae23e7 | 332 | |
ae79697b ZW |
333 | quote = pend->quote_head; |
334 | brack = pend->brack_head; | |
335 | systm = pend->systm_head; | |
dd69c71b | 336 | qtail = pend->quote_tail; |
88ae23e7 | 337 | |
dd69c71b NB |
338 | /* Paste together bracket, system, and after include chains. */ |
339 | if (systm) | |
340 | pend->systm_tail->next = pend->after_head; | |
88ae23e7 | 341 | else |
dd69c71b NB |
342 | systm = pend->after_head; |
343 | ||
344 | if (brack) | |
345 | pend->brack_tail->next = systm; | |
88ae23e7 ZW |
346 | else |
347 | brack = systm; | |
348 | ||
dd69c71b NB |
349 | /* This is a bit tricky. First we drop dupes from the quote-include |
350 | list. Then we drop dupes from the bracket-include list. | |
351 | Finally, if qtail and brack are the same directory, we cut out | |
cb773845 | 352 | brack and move brack up to point to qtail. |
88ae23e7 ZW |
353 | |
354 | We can't just merge the lists and then uniquify them because | |
355 | then we may lose directories from the <> search path that should | |
356 | be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however | |
357 | safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written | |
dd69c71b | 358 | -Ibar -I- -Ifoo -Iquux. */ |
88ae23e7 | 359 | |
dd69c71b NB |
360 | remove_dup_dirs (pfile, brack); |
361 | qtail = remove_dup_dirs (pfile, quote); | |
88ae23e7 ZW |
362 | |
363 | if (quote) | |
364 | { | |
dd69c71b NB |
365 | qtail->next = brack; |
366 | ||
367 | /* If brack == qtail, remove brack as it's simpler. */ | |
afb58288 ZW |
368 | if (brack && INO_T_EQ (qtail->ino, brack->ino) |
369 | && qtail->dev == brack->dev) | |
dd69c71b | 370 | brack = remove_dup_dir (pfile, qtail); |
88ae23e7 ZW |
371 | } |
372 | else | |
bef985f3 | 373 | quote = brack; |
88ae23e7 | 374 | |
ae79697b ZW |
375 | CPP_OPTION (pfile, quote_include) = quote; |
376 | CPP_OPTION (pfile, bracket_include) = brack; | |
88ae23e7 ZW |
377 | } |
378 | ||
5d8ebbd8 NB |
379 | /* A set of booleans indicating what CPP features each source language |
380 | requires. */ | |
a01eb545 ZW |
381 | struct lang_flags |
382 | { | |
383 | char c99; | |
a01eb545 ZW |
384 | char cplusplus; |
385 | char extended_numbers; | |
58551c23 | 386 | char std; |
a01eb545 ZW |
387 | char dollars_in_ident; |
388 | char cplusplus_comments; | |
389 | char digraphs; | |
390 | }; | |
391 | ||
392 | /* ??? Enable $ in identifiers in assembly? */ | |
393 | static const struct lang_flags lang_defaults[] = | |
58551c23 | 394 | { /* c99 c++ xnum std dollar c++comm digr */ |
bdcae02b NB |
395 | /* GNUC89 */ { 0, 0, 1, 0, 1, 1, 1 }, |
396 | /* GNUC99 */ { 1, 0, 1, 0, 1, 1, 1 }, | |
397 | /* STDC89 */ { 0, 0, 0, 1, 0, 0, 0 }, | |
398 | /* STDC94 */ { 0, 0, 0, 1, 0, 0, 1 }, | |
399 | /* STDC99 */ { 1, 0, 1, 1, 0, 1, 1 }, | |
400 | /* GNUCXX */ { 0, 1, 1, 0, 1, 1, 1 }, | |
401 | /* CXX98 */ { 0, 1, 1, 1, 0, 1, 1 }, | |
402 | /* ASM */ { 0, 0, 1, 0, 0, 1, 0 } | |
a01eb545 ZW |
403 | }; |
404 | ||
5d8ebbd8 | 405 | /* Sets internal flags correctly for a given language. */ |
dd07b884 NB |
406 | static void |
407 | set_lang (pfile, lang) | |
408 | cpp_reader *pfile; | |
409 | enum c_lang lang; | |
410 | { | |
a01eb545 | 411 | const struct lang_flags *l = &lang_defaults[(int) lang]; |
df383483 | 412 | |
bdb05a7b | 413 | CPP_OPTION (pfile, lang) = lang; |
dd07b884 | 414 | |
a01eb545 | 415 | CPP_OPTION (pfile, c99) = l->c99; |
a01eb545 ZW |
416 | CPP_OPTION (pfile, cplusplus) = l->cplusplus; |
417 | CPP_OPTION (pfile, extended_numbers) = l->extended_numbers; | |
58551c23 NB |
418 | CPP_OPTION (pfile, std) = l->std; |
419 | CPP_OPTION (pfile, trigraphs) = l->std; | |
a01eb545 ZW |
420 | CPP_OPTION (pfile, dollars_in_ident) = l->dollars_in_ident; |
421 | CPP_OPTION (pfile, cplusplus_comments) = l->cplusplus_comments; | |
422 | CPP_OPTION (pfile, digraphs) = l->digraphs; | |
dd07b884 NB |
423 | } |
424 | ||
7ca3d2b1 NB |
425 | #ifdef HOST_EBCDIC |
426 | static int opt_comp PARAMS ((const void *, const void *)); | |
427 | ||
428 | /* Run-time sorting of options array. */ | |
429 | static int | |
430 | opt_comp (p1, p2) | |
431 | const void *p1, *p2; | |
432 | { | |
433 | return strcmp (((struct cl_option *) p1)->opt_text, | |
434 | ((struct cl_option *) p2)->opt_text); | |
435 | } | |
436 | #endif | |
cf44ea52 | 437 | |
7ca3d2b1 NB |
438 | /* init initializes library global state. It might not need to |
439 | do anything depending on the platform and compiler. */ | |
cf44ea52 | 440 | static void |
674c3b40 | 441 | init_library () |
cf44ea52 | 442 | { |
7ca3d2b1 NB |
443 | static int initialized = 0; |
444 | ||
445 | if (! initialized) | |
446 | { | |
447 | initialized = 1; | |
448 | ||
cf44ea52 | 449 | #ifdef HOST_EBCDIC |
7ca3d2b1 NB |
450 | /* For non-ASCII hosts, the cl_options array needs to be sorted at |
451 | runtime. */ | |
452 | qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp); | |
cf44ea52 NB |
453 | #endif |
454 | ||
7ca3d2b1 NB |
455 | /* Set up the trigraph map. This doesn't need to do anything if |
456 | we were compiled with a compiler that supports C99 designated | |
457 | initializers. */ | |
458 | init_trigraph_map (); | |
459 | } | |
cf44ea52 NB |
460 | } |
461 | ||
ec5c56db | 462 | /* Initialize a cpp_reader structure. */ |
cf44ea52 | 463 | cpp_reader * |
f5e99456 | 464 | cpp_create_reader (lang) |
dd07b884 | 465 | enum c_lang lang; |
6de1e2a9 | 466 | { |
7ca3d2b1 | 467 | cpp_reader *pfile; |
93c80368 | 468 | |
cf44ea52 | 469 | /* Initialise this instance of the library if it hasn't been already. */ |
674c3b40 | 470 | init_library (); |
7ca3d2b1 NB |
471 | |
472 | pfile = (cpp_reader *) xcalloc (1, sizeof (cpp_reader)); | |
93c80368 | 473 | |
c740cee2 | 474 | set_lang (pfile, lang); |
ae79697b | 475 | CPP_OPTION (pfile, warn_import) = 1; |
a5a49440 | 476 | CPP_OPTION (pfile, warn_multichar) = 1; |
ae79697b | 477 | CPP_OPTION (pfile, discard_comments) = 1; |
477cdac7 | 478 | CPP_OPTION (pfile, discard_comments_in_macro_exp) = 1; |
ae79697b | 479 | CPP_OPTION (pfile, show_column) = 1; |
6ab3e7dd | 480 | CPP_OPTION (pfile, tabstop) = 8; |
be768055 | 481 | CPP_OPTION (pfile, operator_names) = 1; |
909de5da | 482 | CPP_OPTION (pfile, warn_endif_labels) = 1; |
ae79697b ZW |
483 | |
484 | CPP_OPTION (pfile, pending) = | |
485 | (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending)); | |
486 | ||
2443d4e1 NB |
487 | /* Default CPP arithmetic to something sensible for the host for the |
488 | benefit of dumb users like fix-header. */ | |
c9220e3a | 489 | CPP_OPTION (pfile, precision) = CHAR_BIT * sizeof (long); |
2443d4e1 NB |
490 | CPP_OPTION (pfile, char_precision) = CHAR_BIT; |
491 | CPP_OPTION (pfile, wchar_precision) = CHAR_BIT * sizeof (int); | |
492 | CPP_OPTION (pfile, int_precision) = CHAR_BIT * sizeof (int); | |
2a1dc0d8 | 493 | CPP_OPTION (pfile, unsigned_char) = 0; |
44a147ad | 494 | CPP_OPTION (pfile, unsigned_wchar) = 1; |
4268e8bb | 495 | |
f7114e17 NB |
496 | /* It's simplest to just create this struct whether or not it will |
497 | be needed. */ | |
498 | pfile->deps = deps_init (); | |
499 | ||
50410426 NB |
500 | /* Initialise the line map. Start at logical line 1, so we can use |
501 | a line number of zero for special states. */ | |
d82fc108 | 502 | init_line_maps (&pfile->line_maps); |
1a76916c | 503 | pfile->line = 1; |
d82fc108 | 504 | |
4a58aab6 | 505 | /* Initialize lexer state. */ |
93c80368 NB |
506 | pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments); |
507 | ||
4ed5bcfb | 508 | /* Set up static tokens. */ |
4ed5bcfb NB |
509 | pfile->avoid_paste.type = CPP_PADDING; |
510 | pfile->avoid_paste.val.source = NULL; | |
511 | pfile->eof.type = CPP_EOF; | |
512 | pfile->eof.flags = 0; | |
93c80368 | 513 | |
5fddcffc NB |
514 | /* Create a token buffer for the lexer. */ |
515 | _cpp_init_tokenrun (&pfile->base_run, 250); | |
516 | pfile->cur_run = &pfile->base_run; | |
517 | pfile->cur_token = pfile->base_run.base; | |
5fddcffc | 518 | |
93c80368 NB |
519 | /* Initialise the base context. */ |
520 | pfile->context = &pfile->base_context; | |
521 | pfile->base_context.macro = 0; | |
522 | pfile->base_context.prev = pfile->base_context.next = 0; | |
523 | ||
8c3b2693 NB |
524 | /* Aligned and unaligned storage. */ |
525 | pfile->a_buff = _cpp_get_buff (pfile, 0); | |
ece54d54 | 526 | pfile->u_buff = _cpp_get_buff (pfile, 0); |
93c80368 | 527 | |
87ed109f NB |
528 | /* The expression parser stack. */ |
529 | _cpp_expand_op_stack (pfile); | |
530 | ||
2a967f3d NB |
531 | /* Initialise the buffer obstack. */ |
532 | gcc_obstack_init (&pfile->buffer_ob); | |
533 | ||
c71f835b | 534 | _cpp_init_includes (pfile); |
cf44ea52 NB |
535 | |
536 | return pfile; | |
f2d5f0cc ZW |
537 | } |
538 | ||
400023a3 | 539 | /* Free resources used by PFILE. Accessing PFILE after this function |
5d8ebbd8 | 540 | returns leads to undefined behaviour. Returns the error count. */ |
400023a3 NB |
541 | int |
542 | cpp_destroy (pfile) | |
6de1e2a9 ZW |
543 | cpp_reader *pfile; |
544 | { | |
400023a3 | 545 | int result; |
591e15a1 | 546 | struct search_path *dir, *dirn; |
93c80368 | 547 | cpp_context *context, *contextn; |
50410426 | 548 | tokenrun *run, *runn; |
709e9e50 | 549 | |
af0d16cd NB |
550 | free_chain (CPP_OPTION (pfile, pending)->include_head); |
551 | free (CPP_OPTION (pfile, pending)); | |
87ed109f | 552 | free (pfile->op_stack); |
af0d16cd | 553 | |
38b24ee2 | 554 | while (CPP_BUFFER (pfile) != NULL) |
ef6e958a | 555 | _cpp_pop_buffer (pfile); |
6de1e2a9 | 556 | |
1a76916c NB |
557 | if (pfile->out.base) |
558 | free (pfile->out.base); | |
004cb263 | 559 | |
93c80368 | 560 | if (pfile->macro_buffer) |
4b49c365 AO |
561 | { |
562 | free ((PTR) pfile->macro_buffer); | |
563 | pfile->macro_buffer = NULL; | |
564 | pfile->macro_buffer_len = 0; | |
565 | } | |
93c80368 | 566 | |
f7114e17 | 567 | deps_free (pfile->deps); |
2a967f3d | 568 | obstack_free (&pfile->buffer_ob, 0); |
49e6c08e | 569 | |
2a967f3d | 570 | _cpp_destroy_hashtable (pfile); |
bfb9dc7f | 571 | _cpp_cleanup_includes (pfile); |
709e9e50 | 572 | |
8c3b2693 | 573 | _cpp_free_buff (pfile->a_buff); |
ece54d54 | 574 | _cpp_free_buff (pfile->u_buff); |
b8af0ca5 | 575 | _cpp_free_buff (pfile->free_buffs); |
93c80368 | 576 | |
50410426 NB |
577 | for (run = &pfile->base_run; run; run = runn) |
578 | { | |
579 | runn = run->next; | |
580 | free (run->base); | |
581 | if (run != &pfile->base_run) | |
582 | free (run); | |
583 | } | |
584 | ||
93c80368 | 585 | for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn) |
709e9e50 | 586 | { |
93c80368 | 587 | dirn = dir->next; |
591e15a1 | 588 | free ((PTR) dir->name); |
709e9e50 NB |
589 | free (dir); |
590 | } | |
93c80368 NB |
591 | |
592 | for (context = pfile->base_context.next; context; context = contextn) | |
593 | { | |
594 | contextn = context->next; | |
595 | free (context); | |
596 | } | |
400023a3 | 597 | |
d82fc108 NB |
598 | free_line_maps (&pfile->line_maps); |
599 | ||
400023a3 NB |
600 | result = pfile->errors; |
601 | free (pfile); | |
602 | ||
603 | return result; | |
6de1e2a9 ZW |
604 | } |
605 | ||
93c80368 | 606 | /* This structure defines one built-in identifier. A node will be |
f24a153a ZW |
607 | entered in the hash table under the name NAME, with value VALUE. |
608 | ||
609 | There are two tables of these. builtin_array holds all the | |
610 | "builtin" macros: these are handled by builtin_macro() in | |
611 | cppmacro.c. Builtin is somewhat of a misnomer -- the property of | |
612 | interest is that these macros require special code to compute their | |
613 | expansions. The value is a "builtin_type" enumerator. | |
614 | ||
615 | operator_array holds the C++ named operators. These are keywords | |
616 | which act as aliases for punctuators. In C++, they cannot be | |
617 | altered through #define, and #if recognizes them as operators. In | |
618 | C, these are not entered into the hash table at all (but see | |
619 | <iso646.h>). The value is a token-type enumerator. */ | |
a9ae4483 ZW |
620 | struct builtin |
621 | { | |
562a5c27 | 622 | const uchar *name; |
93c80368 | 623 | unsigned short len; |
f24a153a | 624 | unsigned short value; |
a9ae4483 | 625 | }; |
93c80368 | 626 | |
f24a153a | 627 | #define B(n, t) { DSC(n), t } |
a9ae4483 | 628 | static const struct builtin builtin_array[] = |
6de1e2a9 | 629 | { |
93c80368 NB |
630 | B("__TIME__", BT_TIME), |
631 | B("__DATE__", BT_DATE), | |
632 | B("__FILE__", BT_FILE), | |
633 | B("__BASE_FILE__", BT_BASE_FILE), | |
634 | B("__LINE__", BT_SPECLINE), | |
635 | B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL), | |
278c4662 NB |
636 | /* Keep builtins not used for -traditional-cpp at the end, and |
637 | update init_builtins() if any more are added. */ | |
644eddaa | 638 | B("_Pragma", BT_PRAGMA), |
618cdda7 | 639 | B("__STDC__", BT_STDC), |
f24a153a | 640 | }; |
92936ecf | 641 | |
f24a153a ZW |
642 | static const struct builtin operator_array[] = |
643 | { | |
644 | B("and", CPP_AND_AND), | |
645 | B("and_eq", CPP_AND_EQ), | |
646 | B("bitand", CPP_AND), | |
647 | B("bitor", CPP_OR), | |
648 | B("compl", CPP_COMPL), | |
649 | B("not", CPP_NOT), | |
650 | B("not_eq", CPP_NOT_EQ), | |
651 | B("or", CPP_OR_OR), | |
652 | B("or_eq", CPP_OR_EQ), | |
653 | B("xor", CPP_XOR), | |
654 | B("xor_eq", CPP_XOR_EQ) | |
a9ae4483 | 655 | }; |
12cf91fe | 656 | #undef B |
a9ae4483 | 657 | |
17645b15 NB |
658 | /* Mark the C++ named operators in the hash table. */ |
659 | static void | |
660 | mark_named_operators (pfile) | |
661 | cpp_reader *pfile; | |
662 | { | |
663 | const struct builtin *b; | |
664 | ||
665 | for (b = operator_array; | |
666 | b < (operator_array + ARRAY_SIZE (operator_array)); | |
667 | b++) | |
668 | { | |
669 | cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len); | |
670 | hp->flags |= NODE_OPERATOR; | |
671 | hp->value.operator = b->value; | |
672 | } | |
673 | } | |
674 | ||
f5e99456 | 675 | /* Subroutine of cpp_read_main_file; reads the builtins table above and |
5d8ebbd8 | 676 | enters them, and language-specific macros, into the hash table. */ |
a9ae4483 | 677 | static void |
7ca3d2b1 | 678 | init_builtins (pfile) |
a9ae4483 ZW |
679 | cpp_reader *pfile; |
680 | { | |
a9ae4483 | 681 | const struct builtin *b; |
278c4662 | 682 | size_t n = ARRAY_SIZE (builtin_array); |
771c4df3 | 683 | |
278c4662 NB |
684 | if (CPP_OPTION (pfile, traditional)) |
685 | n -= 2; | |
686 | ||
687 | for(b = builtin_array; b < builtin_array + n; b++) | |
6de1e2a9 | 688 | { |
f24a153a ZW |
689 | cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len); |
690 | hp->type = NT_MACRO; | |
691 | hp->flags |= NODE_BUILTIN | NODE_WARN; | |
692 | hp->value.builtin = b->value; | |
6de1e2a9 | 693 | } |
c740cee2 NB |
694 | |
695 | if (CPP_OPTION (pfile, cplusplus)) | |
3d90d290 | 696 | _cpp_define_builtin (pfile, "__cplusplus 1"); |
2a1dc0d8 | 697 | else if (CPP_OPTION (pfile, objc)) |
c740cee2 | 698 | _cpp_define_builtin (pfile, "__OBJC__ 1"); |
2a1dc0d8 ZW |
699 | else if (CPP_OPTION (pfile, lang) == CLK_ASM) |
700 | _cpp_define_builtin (pfile, "__ASSEMBLER__ 1"); | |
c740cee2 NB |
701 | |
702 | if (CPP_OPTION (pfile, lang) == CLK_STDC94) | |
703 | _cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L"); | |
704 | else if (CPP_OPTION (pfile, c99)) | |
705 | _cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L"); | |
706 | ||
3d90d290 NB |
707 | if (pfile->cb.register_builtins) |
708 | (*pfile->cb.register_builtins) (pfile); | |
6de1e2a9 ZW |
709 | } |
710 | ||
c45da1ca ZW |
711 | /* And another subroutine. This one sets up the standard include path. */ |
712 | static void | |
7ca3d2b1 | 713 | init_standard_includes (pfile) |
c45da1ca ZW |
714 | cpp_reader *pfile; |
715 | { | |
c45da1ca | 716 | char *path; |
455d2586 | 717 | const struct default_include *p; |
ae79697b | 718 | const char *specd_prefix = CPP_OPTION (pfile, include_prefix); |
c45da1ca ZW |
719 | |
720 | /* Several environment variables may add to the include search path. | |
721 | CPATH specifies an additional list of directories to be searched | |
722 | as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH, | |
723 | etc. specify an additional list of directories to be searched as | |
724 | if specified with -isystem, for the language indicated. */ | |
725 | ||
2f8dd115 | 726 | GET_ENVIRONMENT (path, "CPATH"); |
c45da1ca | 727 | if (path != 0 && *path != 0) |
e33f6253 | 728 | path_include (pfile, path, BRACKET); |
c45da1ca | 729 | |
ae79697b | 730 | switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus)) |
c45da1ca ZW |
731 | { |
732 | case 0: | |
2f8dd115 | 733 | GET_ENVIRONMENT (path, "C_INCLUDE_PATH"); |
c45da1ca ZW |
734 | break; |
735 | case 1: | |
2f8dd115 | 736 | GET_ENVIRONMENT (path, "CPLUS_INCLUDE_PATH"); |
c45da1ca ZW |
737 | break; |
738 | case 2: | |
2f8dd115 | 739 | GET_ENVIRONMENT (path, "OBJC_INCLUDE_PATH"); |
c45da1ca ZW |
740 | break; |
741 | case 3: | |
2f8dd115 | 742 | GET_ENVIRONMENT (path, "OBJCPLUS_INCLUDE_PATH"); |
c45da1ca ZW |
743 | break; |
744 | } | |
745 | if (path != 0 && *path != 0) | |
e33f6253 | 746 | path_include (pfile, path, SYSTEM); |
c45da1ca ZW |
747 | |
748 | /* Search "translated" versions of GNU directories. | |
749 | These have /usr/local/lib/gcc... replaced by specd_prefix. */ | |
60893f43 | 750 | if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len) |
c45da1ca | 751 | { |
c45da1ca | 752 | /* Remove the `include' from /usr/local/lib/gcc.../include. |
ec5c56db | 753 | GCC_INCLUDE_DIR will always end in /include. */ |
60893f43 ZW |
754 | int default_len = cpp_GCC_INCLUDE_DIR_len; |
755 | char *default_prefix = (char *) alloca (default_len + 1); | |
c45da1ca ZW |
756 | int specd_len = strlen (specd_prefix); |
757 | ||
60893f43 | 758 | memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len); |
c45da1ca ZW |
759 | default_prefix[default_len] = '\0'; |
760 | ||
60893f43 | 761 | for (p = cpp_include_defaults; p->fname; p++) |
c45da1ca ZW |
762 | { |
763 | /* Some standard dirs are only for C++. */ | |
764 | if (!p->cplusplus | |
ae79697b ZW |
765 | || (CPP_OPTION (pfile, cplusplus) |
766 | && !CPP_OPTION (pfile, no_standard_cplusplus_includes))) | |
c45da1ca ZW |
767 | { |
768 | /* Does this dir start with the prefix? */ | |
61d0346d | 769 | if (!memcmp (p->fname, default_prefix, default_len)) |
c45da1ca ZW |
770 | { |
771 | /* Yes; change prefix and add to search list. */ | |
772 | int flen = strlen (p->fname); | |
773 | int this_len = specd_len + flen - default_len; | |
774 | char *str = (char *) xmalloc (this_len + 1); | |
775 | memcpy (str, specd_prefix, specd_len); | |
776 | memcpy (str + specd_len, | |
777 | p->fname + default_len, | |
778 | flen - default_len + 1); | |
779 | ||
e33f6253 | 780 | append_include_chain (pfile, str, SYSTEM, p->cxx_aware); |
c45da1ca ZW |
781 | } |
782 | } | |
783 | } | |
784 | } | |
785 | ||
786 | /* Search ordinary names for GNU include directories. */ | |
60893f43 | 787 | for (p = cpp_include_defaults; p->fname; p++) |
c45da1ca ZW |
788 | { |
789 | /* Some standard dirs are only for C++. */ | |
790 | if (!p->cplusplus | |
ae79697b ZW |
791 | || (CPP_OPTION (pfile, cplusplus) |
792 | && !CPP_OPTION (pfile, no_standard_cplusplus_includes))) | |
c45da1ca | 793 | { |
51c04256 | 794 | char *str = update_path (p->fname, p->component); |
e33f6253 | 795 | append_include_chain (pfile, str, SYSTEM, p->cxx_aware); |
c45da1ca ZW |
796 | } |
797 | } | |
798 | } | |
799 | ||
5d8ebbd8 | 800 | /* Pushes a command line -imacro and -include file indicated by P onto |
d7bc7a98 NB |
801 | the buffer stack. Returns non-zero if successful. */ |
802 | static bool | |
803 | push_include (pfile, p) | |
4a58aab6 NB |
804 | cpp_reader *pfile; |
805 | struct pending_option *p; | |
4a58aab6 | 806 | { |
d7bc7a98 | 807 | cpp_token header; |
4a58aab6 | 808 | |
d7bc7a98 NB |
809 | /* Later: maybe update this to use the #include "" search path |
810 | if cpp_read_file fails. */ | |
811 | header.type = CPP_STRING; | |
812 | header.val.str.text = (const unsigned char *) p->arg; | |
813 | header.val.str.len = strlen (p->arg); | |
814 | /* Make the command line directive take up a line. */ | |
50410426 | 815 | pfile->line++; |
d7bc7a98 NB |
816 | |
817 | return _cpp_execute_include (pfile, &header, IT_CMDLINE); | |
818 | } | |
819 | ||
820 | /* Frees a pending_option chain. */ | |
821 | static void | |
822 | free_chain (head) | |
823 | struct pending_option *head; | |
824 | { | |
825 | struct pending_option *next; | |
826 | ||
827 | while (head) | |
828 | { | |
829 | next = head->next; | |
830 | free (head); | |
831 | head = next; | |
4a58aab6 NB |
832 | } |
833 | } | |
834 | ||
2443d4e1 NB |
835 | /* Sanity-checks are dependent on command-line options, so it is |
836 | called as a subroutine of cpp_read_main_file (). */ | |
837 | #if ENABLE_CHECKING | |
838 | static void sanity_checks PARAMS ((cpp_reader *)); | |
839 | static void sanity_checks (pfile) | |
840 | cpp_reader *pfile; | |
841 | { | |
842 | cppchar_t test = 0; | |
c9220e3a | 843 | size_t max_precision = 2 * CHAR_BIT * sizeof (cpp_num_part); |
2443d4e1 NB |
844 | |
845 | /* Sanity checks for assumptions about CPP arithmetic and target | |
846 | type precisions made by cpplib. */ | |
847 | test--; | |
848 | if (test < 1) | |
bdee42b1 | 849 | cpp_error (pfile, DL_ICE, "cppchar_t must be an unsigned type"); |
2443d4e1 | 850 | |
c9220e3a | 851 | if (CPP_OPTION (pfile, precision) > max_precision) |
bdee42b1 | 852 | cpp_error (pfile, DL_ICE, |
68bd6dd6 | 853 | "preprocessor arithmetic has maximum precision of %lu bits; target requires %lu bits", |
c9220e3a NB |
854 | (unsigned long) max_precision, |
855 | (unsigned long) CPP_OPTION (pfile, precision)); | |
2443d4e1 NB |
856 | |
857 | if (CPP_OPTION (pfile, precision) < CPP_OPTION (pfile, int_precision)) | |
bdee42b1 | 858 | cpp_error (pfile, DL_ICE, |
2443d4e1 NB |
859 | "CPP arithmetic must be at least as precise as a target int"); |
860 | ||
861 | if (CPP_OPTION (pfile, char_precision) < 8) | |
bdee42b1 | 862 | cpp_error (pfile, DL_ICE, "target char is less than 8 bits wide"); |
2443d4e1 NB |
863 | |
864 | if (CPP_OPTION (pfile, wchar_precision) < CPP_OPTION (pfile, char_precision)) | |
bdee42b1 | 865 | cpp_error (pfile, DL_ICE, |
2443d4e1 NB |
866 | "target wchar_t is narrower than target char"); |
867 | ||
868 | if (CPP_OPTION (pfile, int_precision) < CPP_OPTION (pfile, char_precision)) | |
bdee42b1 | 869 | cpp_error (pfile, DL_ICE, |
2443d4e1 NB |
870 | "target int is narrower than target char"); |
871 | ||
c9220e3a NB |
872 | /* This is assumed in eval_token() and could be fixed if necessary. */ |
873 | if (sizeof (cppchar_t) > sizeof (cpp_num_part)) | |
874 | cpp_error (pfile, DL_ICE, "CPP half-integer narrower than CPP character"); | |
875 | ||
2443d4e1 | 876 | if (CPP_OPTION (pfile, wchar_precision) > BITS_PER_CPPCHAR_T) |
bdee42b1 | 877 | cpp_error (pfile, DL_ICE, |
68bd6dd6 | 878 | "CPP on this host cannot handle wide character constants over %lu bits, but the target requires %lu bits", |
c9220e3a NB |
879 | (unsigned long) BITS_PER_CPPCHAR_T, |
880 | (unsigned long) CPP_OPTION (pfile, wchar_precision)); | |
2443d4e1 NB |
881 | } |
882 | #else | |
883 | # define sanity_checks(PFILE) | |
884 | #endif | |
885 | ||
f5e99456 NB |
886 | /* This is called after options have been parsed, and partially |
887 | processed. Setup for processing input from the file named FNAME, | |
888 | or stdin if it is the empty string. Return the original filename | |
889 | on success (e.g. foo.i->foo.c), or NULL on failure. */ | |
890 | const char * | |
891 | cpp_read_main_file (pfile, fname, table) | |
6de1e2a9 | 892 | cpp_reader *pfile; |
7ceb3598 | 893 | const char *fname; |
f5e99456 | 894 | hash_table *table; |
6de1e2a9 | 895 | { |
2443d4e1 NB |
896 | sanity_checks (pfile); |
897 | ||
f5e99456 NB |
898 | /* The front ends don't set up the hash table until they have |
899 | finished processing the command line options, so initializing the | |
900 | hashtable is deferred until now. */ | |
901 | _cpp_init_hashtable (pfile, table); | |
902 | ||
c45da1ca | 903 | /* Set up the include search path now. */ |
ae79697b | 904 | if (! CPP_OPTION (pfile, no_standard_includes)) |
7ca3d2b1 | 905 | init_standard_includes (pfile); |
c45da1ca | 906 | |
ae79697b | 907 | merge_include_chains (pfile); |
c45da1ca ZW |
908 | |
909 | /* With -v, print the list of dirs to search. */ | |
ae79697b | 910 | if (CPP_OPTION (pfile, verbose)) |
c45da1ca | 911 | { |
591e15a1 | 912 | struct search_path *l; |
c45da1ca | 913 | fprintf (stderr, _("#include \"...\" search starts here:\n")); |
ae79697b | 914 | for (l = CPP_OPTION (pfile, quote_include); l; l = l->next) |
c45da1ca | 915 | { |
ae79697b | 916 | if (l == CPP_OPTION (pfile, bracket_include)) |
c45da1ca ZW |
917 | fprintf (stderr, _("#include <...> search starts here:\n")); |
918 | fprintf (stderr, " %s\n", l->name); | |
919 | } | |
920 | fprintf (stderr, _("End of search list.\n")); | |
921 | } | |
922 | ||
96302433 | 923 | if (CPP_OPTION (pfile, print_deps)) |
7855db7c | 924 | /* Set the default target (if there is none already). */ |
373e2177 | 925 | deps_add_default_target (pfile->deps, fname); |
96302433 | 926 | |
f5e99456 | 927 | /* Open the main input file. */ |
614c7d37 | 928 | if (!_cpp_read_file (pfile, fname)) |
f5e99456 | 929 | return NULL; |
c45da1ca | 930 | |
5993019d NB |
931 | /* Set this after cpp_post_options so the client can change the |
932 | option if it wishes, and after stacking the main file so we don't | |
933 | trace the main file. */ | |
934 | pfile->line_maps.trace_includes = CPP_OPTION (pfile, print_include_names); | |
935 | ||
f5e99456 NB |
936 | /* For foo.i, read the original filename foo.c now, for the benefit |
937 | of the front ends. */ | |
938 | if (CPP_OPTION (pfile, preprocessed)) | |
939 | read_original_filename (pfile); | |
004cb263 | 940 | /* Overlay an empty buffer to seed traditional preprocessing. */ |
1a76916c NB |
941 | else if (CPP_OPTION (pfile, traditional) |
942 | && !CPP_OPTION (pfile, preprocess_only)) | |
004cb263 | 943 | _cpp_overlay_buffer (pfile, U"", 0); |
f5e99456 NB |
944 | |
945 | return pfile->map->to_file; | |
946 | } | |
947 | ||
948 | /* For preprocessed files, if the first tokens are of the form # NUM. | |
949 | handle the directive so we know the original file name. This will | |
950 | generate file_change callbacks, which the front ends must handle | |
951 | appropriately given their state of initialization. */ | |
952 | static void | |
953 | read_original_filename (pfile) | |
954 | cpp_reader *pfile; | |
955 | { | |
956 | const cpp_token *token, *token1; | |
957 | ||
958 | /* Lex ahead; if the first tokens are of the form # NUM, then | |
959 | process the directive, otherwise back up. */ | |
960 | token = _cpp_lex_direct (pfile); | |
961 | if (token->type == CPP_HASH) | |
962 | { | |
963 | token1 = _cpp_lex_direct (pfile); | |
964 | _cpp_backup_tokens (pfile, 1); | |
965 | ||
966 | /* If it's a #line directive, handle it. */ | |
967 | if (token1->type == CPP_NUMBER) | |
968 | { | |
969 | _cpp_handle_directive (pfile, token->flags & PREV_WHITE); | |
970 | return; | |
971 | } | |
972 | } | |
973 | ||
974 | /* Backup as if nothing happened. */ | |
975 | _cpp_backup_tokens (pfile, 1); | |
976 | } | |
977 | ||
978 | /* Handle pending command line options: -D, -U, -A, -imacros and | |
979 | -include. This should be called after debugging has been properly | |
980 | set up in the front ends. */ | |
981 | void | |
982 | cpp_finish_options (pfile) | |
983 | cpp_reader *pfile; | |
984 | { | |
17645b15 NB |
985 | /* Mark named operators before handling command line macros. */ |
986 | if (CPP_OPTION (pfile, cplusplus) && CPP_OPTION (pfile, operator_names)) | |
987 | mark_named_operators (pfile); | |
988 | ||
d7bc7a98 NB |
989 | /* Install builtins and process command line macros etc. in the order |
990 | they appeared, but only if not already preprocessed. */ | |
05e81724 | 991 | if (! CPP_OPTION (pfile, preprocessed)) |
6de1e2a9 | 992 | { |
d7bc7a98 NB |
993 | struct pending_option *p; |
994 | ||
b0287a90 | 995 | _cpp_do_file_change (pfile, LC_RENAME, _("<built-in>"), 1, 0); |
cbc69f84 | 996 | init_builtins (pfile); |
d7bc7a98 | 997 | _cpp_do_file_change (pfile, LC_RENAME, _("<command line>"), 1, 0); |
cbc69f84 NB |
998 | for (p = CPP_OPTION (pfile, pending)->directive_head; p; p = p->next) |
999 | (*p->handler) (pfile, p->arg); | |
d7bc7a98 | 1000 | |
af0d16cd NB |
1001 | /* Scan -imacros files after -D, -U, but before -include. |
1002 | pfile->next_include_file is NULL, so _cpp_pop_buffer does not | |
1003 | push -include files. */ | |
1004 | for (p = CPP_OPTION (pfile, pending)->imacros_head; p; p = p->next) | |
1005 | if (push_include (pfile, p)) | |
1006 | cpp_scan_nooutput (pfile); | |
1007 | ||
1008 | pfile->next_include_file = &CPP_OPTION (pfile, pending)->include_head; | |
1009 | _cpp_maybe_push_include_file (pfile); | |
6de1e2a9 | 1010 | } |
05e81724 | 1011 | |
a69cbaac NB |
1012 | pfile->first_unused_line = pfile->line; |
1013 | ||
af0d16cd | 1014 | free_chain (CPP_OPTION (pfile, pending)->imacros_head); |
d7bc7a98 | 1015 | free_chain (CPP_OPTION (pfile, pending)->directive_head); |
d7bc7a98 | 1016 | } |
6de1e2a9 | 1017 | |
af0d16cd NB |
1018 | /* Push the next buffer on the stack given by -include, if any. */ |
1019 | void | |
1020 | _cpp_maybe_push_include_file (pfile) | |
d7bc7a98 NB |
1021 | cpp_reader *pfile; |
1022 | { | |
af0d16cd | 1023 | if (pfile->next_include_file) |
d7bc7a98 | 1024 | { |
af0d16cd | 1025 | struct pending_option *head = *pfile->next_include_file; |
df383483 | 1026 | |
af0d16cd NB |
1027 | while (head && !push_include (pfile, head)) |
1028 | head = head->next; | |
d7bc7a98 | 1029 | |
af0d16cd NB |
1030 | if (head) |
1031 | pfile->next_include_file = &head->next; | |
1032 | else | |
d7bc7a98 | 1033 | { |
af0d16cd NB |
1034 | /* All done; restore the line map from <command line>. */ |
1035 | _cpp_do_file_change (pfile, LC_RENAME, | |
1036 | pfile->line_maps.maps[0].to_file, 1, 0); | |
1037 | /* Don't come back here again. */ | |
1038 | pfile->next_include_file = NULL; | |
d7bc7a98 NB |
1039 | } |
1040 | } | |
6de1e2a9 ZW |
1041 | } |
1042 | ||
2f638f96 | 1043 | /* Use mkdeps.c to output dependency information. */ |
7ca3d2b1 NB |
1044 | static void |
1045 | output_deps (pfile) | |
1046 | cpp_reader *pfile; | |
1047 | { | |
1048 | /* Stream on which to print the dependency information. */ | |
1049 | FILE *deps_stream = 0; | |
27c38fbe KG |
1050 | const char *const deps_mode = |
1051 | CPP_OPTION (pfile, print_deps_append) ? "a" : "w"; | |
7ca3d2b1 | 1052 | |
56cd5b95 | 1053 | if (CPP_OPTION (pfile, deps_file)[0] == '\0') |
7ca3d2b1 NB |
1054 | deps_stream = stdout; |
1055 | else | |
1056 | { | |
1057 | deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode); | |
1058 | if (deps_stream == 0) | |
1059 | { | |
ebef4e8c | 1060 | cpp_errno (pfile, DL_ERROR, CPP_OPTION (pfile, deps_file)); |
7ca3d2b1 NB |
1061 | return; |
1062 | } | |
1063 | } | |
1064 | ||
1065 | deps_write (pfile->deps, deps_stream, 72); | |
1066 | ||
1067 | if (CPP_OPTION (pfile, deps_phony_targets)) | |
1068 | deps_phony_targets (pfile->deps, deps_stream); | |
1069 | ||
1070 | /* Don't close stdout. */ | |
ab8e2228 | 1071 | if (deps_stream != stdout) |
7ca3d2b1 NB |
1072 | { |
1073 | if (ferror (deps_stream) || fclose (deps_stream) != 0) | |
bdee42b1 | 1074 | cpp_error (pfile, DL_ERROR, "I/O error on output"); |
7ca3d2b1 NB |
1075 | } |
1076 | } | |
1077 | ||
6de1e2a9 ZW |
1078 | /* This is called at the end of preprocessing. It pops the |
1079 | last buffer and writes dependency output. It should also | |
1080 | clear macro definitions, such that you could call cpp_start_read | |
4a58aab6 | 1081 | with a new filename to restart processing. */ |
6de1e2a9 | 1082 | void |
93c80368 | 1083 | cpp_finish (pfile) |
6de1e2a9 ZW |
1084 | cpp_reader *pfile; |
1085 | { | |
a69cbaac NB |
1086 | /* Warn about unused macros before popping the final buffer. */ |
1087 | if (CPP_OPTION (pfile, warn_unused_macros)) | |
1088 | cpp_forall_identifiers (pfile, _cpp_warn_if_unused_macro, NULL); | |
1089 | ||
7364fdd8 NB |
1090 | /* cpplex.c leaves the final buffer on the stack. This it so that |
1091 | it returns an unending stream of CPP_EOFs to the client. If we | |
a1f300c0 | 1092 | popped the buffer, we'd dereference a NULL buffer pointer and |
7364fdd8 NB |
1093 | segfault. It's nice to allow the client to do worry-free excess |
1094 | cpp_get_token calls. */ | |
1095 | while (pfile->buffer) | |
1096 | _cpp_pop_buffer (pfile); | |
c1212d2f | 1097 | |
49e6c08e | 1098 | /* Don't write the deps file if preprocessing has failed. */ |
ae79697b | 1099 | if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0) |
7ca3d2b1 | 1100 | output_deps (pfile); |
3caee4a8 | 1101 | |
d4506961 ZW |
1102 | /* Report on headers that could use multiple include guards. */ |
1103 | if (CPP_OPTION (pfile, print_include_names)) | |
c71f835b | 1104 | _cpp_report_missing_guards (pfile); |
6de1e2a9 ZW |
1105 | } |
1106 | ||
5d8ebbd8 | 1107 | /* Add a directive to be handled later in the initialization phase. */ |
223dca6a | 1108 | static void |
ae79697b ZW |
1109 | new_pending_directive (pend, text, handler) |
1110 | struct cpp_pending *pend; | |
223dca6a | 1111 | const char *text; |
40eac643 | 1112 | cl_directive_handler handler; |
223dca6a RH |
1113 | { |
1114 | struct pending_option *o = (struct pending_option *) | |
1115 | xmalloc (sizeof (struct pending_option)); | |
1116 | ||
7ceb3598 | 1117 | o->arg = text; |
223dca6a | 1118 | o->next = NULL; |
40eac643 | 1119 | o->handler = handler; |
ae79697b | 1120 | APPEND (pend, directive, o); |
223dca6a RH |
1121 | } |
1122 | ||
ae79697b ZW |
1123 | /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string"); |
1124 | I.e. a const string initializer with parens around it. That is | |
1125 | what N_("string") resolves to, so we make no_* be macros instead. */ | |
c725bd79 NB |
1126 | #define no_arg N_("argument missing after %s") |
1127 | #define no_ass N_("assertion missing after %s") | |
1128 | #define no_dir N_("directory name missing after %s") | |
1129 | #define no_fil N_("file name missing after %s") | |
1130 | #define no_mac N_("macro name missing after %s") | |
1131 | #define no_pth N_("path name missing after %s") | |
1132 | #define no_num N_("number missing after %s") | |
1133 | #define no_tgt N_("target missing after %s") | |
ae79697b ZW |
1134 | |
1135 | /* This is the list of all command line options, with the leading | |
1136 | "-" removed. It must be sorted in ASCII collating order. */ | |
1137 | #define COMMAND_LINE_OPTIONS \ | |
ae79697b | 1138 | DEF_OPT("A", no_ass, OPT_A) \ |
ae79697b | 1139 | DEF_OPT("D", no_mac, OPT_D) \ |
ae79697b ZW |
1140 | DEF_OPT("I", no_dir, OPT_I) \ |
1141 | DEF_OPT("M", 0, OPT_M) \ | |
b3124fac | 1142 | DEF_OPT("MD", no_fil, OPT_MD) \ |
96302433 | 1143 | DEF_OPT("MF", no_fil, OPT_MF) \ |
ae79697b ZW |
1144 | DEF_OPT("MG", 0, OPT_MG) \ |
1145 | DEF_OPT("MM", 0, OPT_MM) \ | |
b3124fac | 1146 | DEF_OPT("MMD", no_fil, OPT_MMD) \ |
a5a4ce3c | 1147 | DEF_OPT("MP", 0, OPT_MP) \ |
f7114e17 | 1148 | DEF_OPT("MQ", no_tgt, OPT_MQ) \ |
03b9ab42 | 1149 | DEF_OPT("MT", no_tgt, OPT_MT) \ |
ae79697b | 1150 | DEF_OPT("U", no_mac, OPT_U) \ |
ae79697b ZW |
1151 | DEF_OPT("idirafter", no_dir, OPT_idirafter) \ |
1152 | DEF_OPT("imacros", no_fil, OPT_imacros) \ | |
1153 | DEF_OPT("include", no_fil, OPT_include) \ | |
1154 | DEF_OPT("iprefix", no_pth, OPT_iprefix) \ | |
1155 | DEF_OPT("isystem", no_dir, OPT_isystem) \ | |
1156 | DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \ | |
1157 | DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \ | |
1158 | DEF_OPT("lang-asm", 0, OPT_lang_asm) \ | |
1159 | DEF_OPT("lang-c", 0, OPT_lang_c) \ | |
1160 | DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \ | |
1161 | DEF_OPT("lang-c89", 0, OPT_lang_c89) \ | |
ae79697b | 1162 | DEF_OPT("lang-objc", 0, OPT_lang_objc) \ |
ae79697b | 1163 | DEF_OPT("o", no_fil, OPT_o) \ |
ae79697b | 1164 | DEF_OPT("remap", 0, OPT_remap) \ |
dd07b884 | 1165 | DEF_OPT("std=c++98", 0, OPT_std_cplusplus98) \ |
ae79697b ZW |
1166 | DEF_OPT("std=c89", 0, OPT_std_c89) \ |
1167 | DEF_OPT("std=c99", 0, OPT_std_c99) \ | |
1168 | DEF_OPT("std=c9x", 0, OPT_std_c9x) \ | |
1169 | DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \ | |
1170 | DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \ | |
1171 | DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \ | |
1172 | DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \ | |
1173 | DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \ | |
1174 | DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \ | |
4b7091eb | 1175 | DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) |
ae79697b ZW |
1176 | |
1177 | #define DEF_OPT(text, msg, code) code, | |
e23c0ba3 ZW |
1178 | enum opt_code |
1179 | { | |
ae79697b | 1180 | COMMAND_LINE_OPTIONS |
e23c0ba3 ZW |
1181 | N_OPTS |
1182 | }; | |
ae79697b | 1183 | #undef DEF_OPT |
e23c0ba3 ZW |
1184 | |
1185 | struct cl_option | |
1186 | { | |
1187 | const char *opt_text; | |
1188 | const char *msg; | |
1189 | size_t opt_len; | |
1190 | enum opt_code opt_code; | |
1191 | }; | |
1192 | ||
ae79697b | 1193 | #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code }, |
e23c0ba3 ZW |
1194 | #ifdef HOST_EBCDIC |
1195 | static struct cl_option cl_options[] = | |
1196 | #else | |
1197 | static const struct cl_option cl_options[] = | |
1198 | #endif | |
1199 | { | |
ae79697b | 1200 | COMMAND_LINE_OPTIONS |
e23c0ba3 ZW |
1201 | }; |
1202 | #undef DEF_OPT | |
ae79697b | 1203 | #undef COMMAND_LINE_OPTIONS |
e23c0ba3 ZW |
1204 | |
1205 | /* Perform a binary search to find which, if any, option the given | |
1206 | command-line matches. Returns its index in the option array, | |
1207 | negative on failure. Complications arise since some options can be | |
1208 | suffixed with an argument, and multiple complete matches can occur, | |
09e77dee | 1209 | e.g. -pedantic and -pedantic-errors. */ |
e23c0ba3 ZW |
1210 | static int |
1211 | parse_option (input) | |
1212 | const char *input; | |
1213 | { | |
1214 | unsigned int md, mn, mx; | |
1215 | size_t opt_len; | |
1216 | int comp; | |
1217 | ||
1218 | mn = 0; | |
1219 | mx = N_OPTS; | |
1220 | ||
1221 | while (mx > mn) | |
1222 | { | |
1223 | md = (mn + mx) / 2; | |
ae79697b | 1224 | |
e23c0ba3 | 1225 | opt_len = cl_options[md].opt_len; |
61d0346d | 1226 | comp = memcmp (input, cl_options[md].opt_text, opt_len); |
ae79697b | 1227 | |
e23c0ba3 ZW |
1228 | if (comp > 0) |
1229 | mn = md + 1; | |
1230 | else if (comp < 0) | |
1231 | mx = md; | |
1232 | else | |
1233 | { | |
1234 | if (input[opt_len] == '\0') | |
1235 | return md; | |
1236 | /* We were passed more text. If the option takes an argument, | |
1237 | we may match a later option or we may have been passed the | |
1238 | argument. The longest possible option match succeeds. | |
1239 | If the option takes no arguments we have not matched and | |
4a58aab6 | 1240 | continue the search (e.g. input="stdc++" match was "stdc"). */ |
e23c0ba3 ZW |
1241 | mn = md + 1; |
1242 | if (cl_options[md].msg) | |
1243 | { | |
1244 | /* Scan forwards. If we get an exact match, return it. | |
1245 | Otherwise, return the longest option-accepting match. | |
4a58aab6 | 1246 | This loops no more than twice with current options. */ |
e23c0ba3 | 1247 | mx = md; |
37b8524c | 1248 | for (; mn < (unsigned int) N_OPTS; mn++) |
e23c0ba3 ZW |
1249 | { |
1250 | opt_len = cl_options[mn].opt_len; | |
61d0346d | 1251 | if (memcmp (input, cl_options[mn].opt_text, opt_len)) |
e23c0ba3 ZW |
1252 | break; |
1253 | if (input[opt_len] == '\0') | |
1254 | return mn; | |
1255 | if (cl_options[mn].msg) | |
1256 | mx = mn; | |
1257 | } | |
1258 | return mx; | |
1259 | } | |
1260 | } | |
1261 | } | |
1262 | ||
1263 | return -1; | |
1264 | } | |
1265 | ||
6de1e2a9 ZW |
1266 | /* Handle one command-line option in (argc, argv). |
1267 | Can be called multiple times, to handle multiple sets of options. | |
1268 | Returns number of strings consumed. */ | |
2c0accc9 | 1269 | int |
09e77dee | 1270 | cpp_handle_option (pfile, argc, argv) |
6de1e2a9 ZW |
1271 | cpp_reader *pfile; |
1272 | int argc; | |
1273 | char **argv; | |
1274 | { | |
6de1e2a9 | 1275 | int i = 0; |
f8f769ea | 1276 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
6de1e2a9 | 1277 | |
373e2177 NB |
1278 | /* Interpret "-" or a non-option as a file name. */ |
1279 | if (argv[i][0] != '-' || argv[i][1] == '\0') | |
0b22d65c | 1280 | { |
373e2177 NB |
1281 | if (CPP_OPTION (pfile, in_fname) == NULL) |
1282 | CPP_OPTION (pfile, in_fname) = argv[i]; | |
1283 | else if (CPP_OPTION (pfile, out_fname) == NULL) | |
ae79697b | 1284 | CPP_OPTION (pfile, out_fname) = argv[i]; |
0b22d65c | 1285 | else |
bdee42b1 | 1286 | cpp_error (pfile, DL_ERROR, |
ebef4e8c | 1287 | "too many filenames. Type %s --help for usage info", |
373e2177 | 1288 | progname); |
0b22d65c ZW |
1289 | } |
1290 | else | |
e23c0ba3 ZW |
1291 | { |
1292 | enum opt_code opt_code; | |
1293 | int opt_index; | |
7ceb3598 | 1294 | const char *arg = 0; |
e23c0ba3 | 1295 | |
4a58aab6 | 1296 | /* Skip over '-'. */ |
e23c0ba3 ZW |
1297 | opt_index = parse_option (&argv[i][1]); |
1298 | if (opt_index < 0) | |
1299 | return i; | |
1300 | ||
1301 | opt_code = cl_options[opt_index].opt_code; | |
1302 | if (cl_options[opt_index].msg) | |
1303 | { | |
1304 | arg = &argv[i][cl_options[opt_index].opt_len + 1]; | |
09e77dee | 1305 | if (arg[0] == '\0') |
e23c0ba3 ZW |
1306 | { |
1307 | arg = argv[++i]; | |
1308 | if (!arg) | |
1309 | { | |
bdee42b1 | 1310 | cpp_error (pfile, DL_ERROR, |
ebef4e8c | 1311 | cl_options[opt_index].msg, argv[i - 1]); |
e23c0ba3 ZW |
1312 | return argc; |
1313 | } | |
1314 | } | |
1315 | } | |
ae79697b | 1316 | |
e23c0ba3 ZW |
1317 | switch (opt_code) |
1318 | { | |
4a58aab6 | 1319 | case N_OPTS: /* Shut GCC up. */ |
e23c0ba3 | 1320 | break; |
f4cdc368 | 1321 | |
e23c0ba3 | 1322 | case OPT_D: |
f8f769ea | 1323 | new_pending_directive (pend, arg, cpp_define); |
e23c0ba3 | 1324 | break; |
e23c0ba3 | 1325 | case OPT_remap: |
ae79697b | 1326 | CPP_OPTION (pfile, remap) = 1; |
e23c0ba3 ZW |
1327 | break; |
1328 | case OPT_iprefix: | |
ae79697b ZW |
1329 | CPP_OPTION (pfile, include_prefix) = arg; |
1330 | CPP_OPTION (pfile, include_prefix_len) = strlen (arg); | |
e23c0ba3 ZW |
1331 | break; |
1332 | case OPT_lang_c: | |
dd07b884 | 1333 | set_lang (pfile, CLK_GNUC89); |
e23c0ba3 | 1334 | break; |
e23c0ba3 | 1335 | case OPT_lang_cplusplus: |
dd07b884 | 1336 | set_lang (pfile, CLK_GNUCXX); |
e23c0ba3 | 1337 | break; |
f8f769ea | 1338 | case OPT_lang_objc: |
bdcae02b | 1339 | CPP_OPTION (pfile, objc) = 1; |
e23c0ba3 | 1340 | break; |
dd07b884 NB |
1341 | case OPT_lang_asm: |
1342 | set_lang (pfile, CLK_ASM); | |
e23c0ba3 | 1343 | break; |
dd07b884 NB |
1344 | case OPT_std_cplusplus98: |
1345 | set_lang (pfile, CLK_CXX98); | |
e23c0ba3 ZW |
1346 | break; |
1347 | case OPT_std_gnu89: | |
dd07b884 | 1348 | set_lang (pfile, CLK_GNUC89); |
e23c0ba3 ZW |
1349 | break; |
1350 | case OPT_std_gnu9x: | |
1351 | case OPT_std_gnu99: | |
dd07b884 | 1352 | set_lang (pfile, CLK_GNUC99); |
e23c0ba3 ZW |
1353 | break; |
1354 | case OPT_std_iso9899_199409: | |
dd07b884 NB |
1355 | set_lang (pfile, CLK_STDC94); |
1356 | break; | |
e23c0ba3 ZW |
1357 | case OPT_std_iso9899_1990: |
1358 | case OPT_std_c89: | |
9b55f29a | 1359 | case OPT_lang_c89: |
dd07b884 | 1360 | set_lang (pfile, CLK_STDC89); |
e23c0ba3 ZW |
1361 | break; |
1362 | case OPT_std_iso9899_199x: | |
1363 | case OPT_std_iso9899_1999: | |
1364 | case OPT_std_c9x: | |
1365 | case OPT_std_c99: | |
dd07b884 NB |
1366 | set_lang (pfile, CLK_STDC99); |
1367 | break; | |
e23c0ba3 | 1368 | case OPT_o: |
373e2177 NB |
1369 | if (CPP_OPTION (pfile, out_fname) == NULL) |
1370 | CPP_OPTION (pfile, out_fname) = arg; | |
1371 | else | |
0b22d65c | 1372 | { |
bdee42b1 | 1373 | cpp_error (pfile, DL_ERROR, "output filename specified twice"); |
e23c0ba3 ZW |
1374 | return argc; |
1375 | } | |
e23c0ba3 | 1376 | break; |
96302433 | 1377 | |
e23c0ba3 | 1378 | case OPT_MG: |
ae79697b | 1379 | CPP_OPTION (pfile, print_deps_missing_files) = 1; |
e23c0ba3 ZW |
1380 | break; |
1381 | case OPT_M: | |
3ddbb8a9 NB |
1382 | /* When doing dependencies with -M or -MM, suppress normal |
1383 | preprocessed output, but still do -dM etc. as software | |
1384 | depends on this. Preprocessed output occurs if -MD, -MMD | |
1385 | or environment var dependency generation is used. */ | |
96302433 | 1386 | CPP_OPTION (pfile, print_deps) = 2; |
3ddbb8a9 | 1387 | CPP_OPTION (pfile, no_output) = 1; |
ba57a9c0 | 1388 | CPP_OPTION (pfile, inhibit_warnings) = 1; |
96302433 | 1389 | break; |
e23c0ba3 | 1390 | case OPT_MM: |
96302433 | 1391 | CPP_OPTION (pfile, print_deps) = 1; |
3ddbb8a9 | 1392 | CPP_OPTION (pfile, no_output) = 1; |
ba57a9c0 | 1393 | CPP_OPTION (pfile, inhibit_warnings) = 1; |
e23c0ba3 | 1394 | break; |
96302433 NB |
1395 | case OPT_MF: |
1396 | CPP_OPTION (pfile, deps_file) = arg; | |
1397 | break; | |
df383483 | 1398 | case OPT_MP: |
a5a4ce3c NB |
1399 | CPP_OPTION (pfile, deps_phony_targets) = 1; |
1400 | break; | |
f7114e17 | 1401 | case OPT_MQ: |
03b9ab42 | 1402 | case OPT_MT: |
f7114e17 NB |
1403 | /* Add a target. -MQ quotes for Make. */ |
1404 | deps_add_target (pfile->deps, arg, opt_code == OPT_MQ); | |
03b9ab42 NB |
1405 | break; |
1406 | ||
b3124fac NB |
1407 | case OPT_MD: |
1408 | CPP_OPTION (pfile, print_deps) = 2; | |
1409 | CPP_OPTION (pfile, deps_file) = arg; | |
1410 | break; | |
1411 | case OPT_MMD: | |
1412 | CPP_OPTION (pfile, print_deps) = 1; | |
1413 | CPP_OPTION (pfile, deps_file) = arg; | |
1414 | break; | |
1415 | ||
e23c0ba3 | 1416 | case OPT_A: |
e1e97c4f | 1417 | if (arg[0] == '-') |
0b22d65c | 1418 | { |
e1e97c4f NB |
1419 | /* -A with an argument beginning with '-' acts as |
1420 | #unassert on whatever immediately follows the '-'. | |
1421 | If "-" is the whole argument, we eliminate all | |
1422 | predefined macros and assertions, including those | |
1423 | that were specified earlier on the command line. | |
1424 | That way we can get rid of any that were passed | |
1425 | automatically in from GCC. */ | |
1426 | ||
1427 | if (arg[1] == '\0') | |
0b22d65c | 1428 | { |
29401c30 | 1429 | free_chain (pend->directive_head); |
e33f6253 NB |
1430 | pend->directive_head = NULL; |
1431 | pend->directive_tail = NULL; | |
0b22d65c | 1432 | } |
e1e97c4f | 1433 | else |
e33f6253 | 1434 | new_pending_directive (pend, arg + 1, cpp_unassert); |
6de1e2a9 | 1435 | } |
e1e97c4f | 1436 | else |
e33f6253 | 1437 | new_pending_directive (pend, arg, cpp_assert); |
e23c0ba3 ZW |
1438 | break; |
1439 | case OPT_U: | |
e33f6253 | 1440 | new_pending_directive (pend, arg, cpp_undef); |
e23c0ba3 ZW |
1441 | break; |
1442 | case OPT_I: /* Add directory to path for includes. */ | |
1443 | if (!strcmp (arg, "-")) | |
df383483 | 1444 | { |
e23c0ba3 ZW |
1445 | /* -I- means: |
1446 | Use the preceding -I directories for #include "..." | |
1447 | but not #include <...>. | |
1448 | Don't search the directory of the present file | |
1449 | for #include "...". (Note that -I. -I- is not the same as | |
1450 | the default setup; -I. uses the compiler's working dir.) */ | |
ae79697b | 1451 | if (! CPP_OPTION (pfile, ignore_srcdir)) |
e23c0ba3 | 1452 | { |
ae79697b ZW |
1453 | pend->quote_head = pend->brack_head; |
1454 | pend->quote_tail = pend->brack_tail; | |
1455 | pend->brack_head = 0; | |
1456 | pend->brack_tail = 0; | |
1457 | CPP_OPTION (pfile, ignore_srcdir) = 1; | |
e23c0ba3 ZW |
1458 | } |
1459 | else | |
1460 | { | |
bdee42b1 | 1461 | cpp_error (pfile, DL_ERROR, "-I- specified twice"); |
e23c0ba3 ZW |
1462 | return argc; |
1463 | } | |
df383483 KH |
1464 | } |
1465 | else | |
e33f6253 | 1466 | append_include_chain (pfile, xstrdup (arg), BRACKET, 0); |
e23c0ba3 ZW |
1467 | break; |
1468 | case OPT_isystem: | |
1469 | /* Add directory to beginning of system include path, as a system | |
4a58aab6 | 1470 | include directory. */ |
e33f6253 | 1471 | append_include_chain (pfile, xstrdup (arg), SYSTEM, 0); |
e23c0ba3 ZW |
1472 | break; |
1473 | case OPT_include: | |
e23c0ba3 ZW |
1474 | case OPT_imacros: |
1475 | { | |
1476 | struct pending_option *o = (struct pending_option *) | |
1477 | xmalloc (sizeof (struct pending_option)); | |
1478 | o->arg = arg; | |
1479 | o->next = NULL; | |
ae79697b | 1480 | |
d7bc7a98 NB |
1481 | if (opt_code == OPT_include) |
1482 | APPEND (pend, include, o); | |
1483 | else | |
1484 | APPEND (pend, imacros, o); | |
e23c0ba3 ZW |
1485 | } |
1486 | break; | |
1487 | case OPT_iwithprefix: | |
1488 | /* Add directory to end of path for includes, | |
1489 | with the default prefix at the front of its name. */ | |
1490 | /* fall through */ | |
1491 | case OPT_iwithprefixbefore: | |
1492 | /* Add directory to main path for includes, | |
1493 | with the default prefix at the front of its name. */ | |
1494 | { | |
1495 | char *fname; | |
1496 | int len; | |
ae79697b | 1497 | |
e23c0ba3 | 1498 | len = strlen (arg); |
ae79697b ZW |
1499 | |
1500 | if (CPP_OPTION (pfile, include_prefix) != 0) | |
e23c0ba3 | 1501 | { |
ae79697b ZW |
1502 | size_t ipl = CPP_OPTION (pfile, include_prefix_len); |
1503 | fname = xmalloc (ipl + len + 1); | |
1504 | memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl); | |
1505 | memcpy (fname + ipl, arg, len + 1); | |
e23c0ba3 | 1506 | } |
60893f43 | 1507 | else if (cpp_GCC_INCLUDE_DIR_len) |
e23c0ba3 | 1508 | { |
60893f43 ZW |
1509 | fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1); |
1510 | memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len); | |
1511 | memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1); | |
e23c0ba3 | 1512 | } |
60893f43 ZW |
1513 | else |
1514 | fname = xstrdup (arg); | |
ae79697b | 1515 | |
e33f6253 | 1516 | append_include_chain (pfile, fname, |
e23c0ba3 ZW |
1517 | opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0); |
1518 | } | |
1519 | break; | |
1520 | case OPT_idirafter: | |
1521 | /* Add directory to end of path for includes. */ | |
e33f6253 | 1522 | append_include_chain (pfile, xstrdup (arg), AFTER, 0); |
e23c0ba3 | 1523 | break; |
df383483 | 1524 | } |
e23c0ba3 | 1525 | } |
6de1e2a9 | 1526 | return i + 1; |
e23c0ba3 | 1527 | } |
0b22d65c | 1528 | |
6de1e2a9 ZW |
1529 | /* Handle command-line options in (argc, argv). |
1530 | Can be called multiple times, to handle multiple sets of options. | |
1531 | Returns if an unrecognized option is seen. | |
1532 | Returns number of strings consumed. */ | |
6de1e2a9 ZW |
1533 | int |
1534 | cpp_handle_options (pfile, argc, argv) | |
1535 | cpp_reader *pfile; | |
1536 | int argc; | |
1537 | char **argv; | |
1538 | { | |
1539 | int i; | |
1540 | int strings_processed; | |
e23c0ba3 | 1541 | |
6de1e2a9 ZW |
1542 | for (i = 0; i < argc; i += strings_processed) |
1543 | { | |
09e77dee | 1544 | strings_processed = cpp_handle_option (pfile, argc - i, argv + i); |
6de1e2a9 ZW |
1545 | if (strings_processed == 0) |
1546 | break; | |
1547 | } | |
96302433 | 1548 | |
6de1e2a9 ZW |
1549 | return i; |
1550 | } | |
1551 | ||
96302433 NB |
1552 | /* Extra processing when all options are parsed, after all calls to |
1553 | cpp_handle_option[s]. Consistency checks etc. */ | |
1554 | void | |
1555 | cpp_post_options (pfile) | |
1556 | cpp_reader *pfile; | |
1557 | { | |
373e2177 NB |
1558 | /* Canonicalize in_fname and out_fname. We guarantee they are not |
1559 | NULL, and that the empty string represents stdin / stdout. */ | |
1560 | if (CPP_OPTION (pfile, in_fname) == NULL | |
1561 | || !strcmp (CPP_OPTION (pfile, in_fname), "-")) | |
1562 | CPP_OPTION (pfile, in_fname) = ""; | |
1563 | ||
1564 | if (CPP_OPTION (pfile, out_fname) == NULL | |
1565 | || !strcmp (CPP_OPTION (pfile, out_fname), "-")) | |
1566 | CPP_OPTION (pfile, out_fname) = ""; | |
1567 | ||
96302433 NB |
1568 | /* -Wtraditional is not useful in C++ mode. */ |
1569 | if (CPP_OPTION (pfile, cplusplus)) | |
1570 | CPP_OPTION (pfile, warn_traditional) = 0; | |
1571 | ||
ceeedfc1 NB |
1572 | /* The compiler front ends override this, but I think this is the |
1573 | appropriate setting for the library. */ | |
56da7207 ZW |
1574 | CPP_OPTION (pfile, warn_long_long) |
1575 | = ((CPP_OPTION (pfile, pedantic) && !CPP_OPTION (pfile, c99)) | |
1576 | || CPP_OPTION (pfile, warn_traditional)); | |
cd7ab83f | 1577 | |
6d4587f7 | 1578 | /* Permanently disable macro expansion if we are rescanning |
43612ffb | 1579 | preprocessed text. Read preprocesed source in ISO mode. */ |
6d4587f7 | 1580 | if (CPP_OPTION (pfile, preprocessed)) |
43612ffb NB |
1581 | { |
1582 | pfile->state.prevent_expansion = 1; | |
1583 | CPP_OPTION (pfile, traditional) = 0; | |
1584 | } | |
1585 | ||
1586 | /* Traditional CPP does not accurately track column information. */ | |
1587 | if (CPP_OPTION (pfile, traditional)) | |
1588 | CPP_OPTION (pfile, show_column) = 0; | |
6d4587f7 | 1589 | |
ba57a9c0 NB |
1590 | /* -dM and dependencies suppress normal output; do it here so that |
1591 | the last -d[MDN] switch overrides earlier ones. */ | |
1651cc96 JJ |
1592 | if (CPP_OPTION (pfile, dump_macros) == dump_only) |
1593 | CPP_OPTION (pfile, no_output) = 1; | |
1594 | ||
ba57a9c0 NB |
1595 | /* Disable -dD, -dN and -dI if normal output is suppressed. Allow |
1596 | -dM since at least glibc relies on -M -dM to work. */ | |
1651cc96 JJ |
1597 | if (CPP_OPTION (pfile, no_output)) |
1598 | { | |
1599 | if (CPP_OPTION (pfile, dump_macros) != dump_only) | |
1600 | CPP_OPTION (pfile, dump_macros) = dump_none; | |
1601 | CPP_OPTION (pfile, dump_includes) = 0; | |
1602 | } | |
1603 | ||
ba57a9c0 NB |
1604 | /* Intialize, and check environment variables for, dependency |
1605 | output. */ | |
96302433 NB |
1606 | init_dependency_output (pfile); |
1607 | ||
ba57a9c0 NB |
1608 | /* If we're not outputting dependencies, complain if other -M |
1609 | options have been given. */ | |
1610 | if (!CPP_OPTION (pfile, print_deps) | |
1611 | && (CPP_OPTION (pfile, print_deps_missing_files) | |
1612 | || CPP_OPTION (pfile, deps_file) | |
1613 | || CPP_OPTION (pfile, deps_phony_targets))) | |
bdee42b1 | 1614 | cpp_error (pfile, DL_ERROR, |
ebef4e8c | 1615 | "you must additionally specify either -M or -MM"); |
96302433 NB |
1616 | } |
1617 | ||
56cd5b95 NB |
1618 | /* Set up dependency-file output. On exit, if print_deps is non-zero |
1619 | then deps_file is not NULL; stdout is the empty string. */ | |
7ca3d2b1 NB |
1620 | static void |
1621 | init_dependency_output (pfile) | |
1622 | cpp_reader *pfile; | |
1623 | { | |
1624 | char *spec, *s, *output_file; | |
1625 | ||
1626 | /* Either of two environment variables can specify output of deps. | |
1627 | Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET", | |
1628 | where OUTPUT_FILE is the file to write deps info to | |
1629 | and DEPS_TARGET is the target to mention in the deps. */ | |
1630 | ||
1631 | if (CPP_OPTION (pfile, print_deps) == 0) | |
1632 | { | |
1633 | spec = getenv ("DEPENDENCIES_OUTPUT"); | |
1634 | if (spec) | |
1635 | CPP_OPTION (pfile, print_deps) = 1; | |
1636 | else | |
1637 | { | |
1638 | spec = getenv ("SUNPRO_DEPENDENCIES"); | |
1639 | if (spec) | |
1640 | CPP_OPTION (pfile, print_deps) = 2; | |
1641 | else | |
1642 | return; | |
1643 | } | |
1644 | ||
1645 | /* Find the space before the DEPS_TARGET, if there is one. */ | |
1646 | s = strchr (spec, ' '); | |
1647 | if (s) | |
1648 | { | |
1649 | /* Let the caller perform MAKE quoting. */ | |
1650 | deps_add_target (pfile->deps, s + 1, 0); | |
1651 | output_file = (char *) xmalloc (s - spec + 1); | |
1652 | memcpy (output_file, spec, s - spec); | |
1653 | output_file[s - spec] = 0; | |
1654 | } | |
1655 | else | |
1656 | output_file = spec; | |
1657 | ||
ab8e2228 NB |
1658 | /* Command line -MF overrides environment variables and default. */ |
1659 | if (CPP_OPTION (pfile, deps_file) == 0) | |
1660 | CPP_OPTION (pfile, deps_file) = output_file; | |
1661 | ||
7ca3d2b1 NB |
1662 | CPP_OPTION (pfile, print_deps_append) = 1; |
1663 | } | |
ab8e2228 | 1664 | else if (CPP_OPTION (pfile, deps_file) == 0) |
32810ba3 NB |
1665 | /* If -M or -MM was seen without -MF, default output to wherever |
1666 | was specified with -o. out_fname is non-NULL here. */ | |
ab8e2228 | 1667 | CPP_OPTION (pfile, deps_file) = CPP_OPTION (pfile, out_fname); |
7ca3d2b1 | 1668 | } |