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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 | |
4a58aab6 | 32 | /* Predefined symbols, built-in macros, and the default include path. */ |
6de1e2a9 ZW |
33 | |
34 | #ifndef GET_ENV_PATH_LIST | |
35 | #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0) | |
36 | #endif | |
37 | ||
88ae23e7 ZW |
38 | /* Windows does not natively support inodes, and neither does MSDOS. |
39 | Cygwin's emulation can generate non-unique inodes, so don't use it. | |
ec5c56db | 40 | VMS has non-numeric inodes. */ |
88ae23e7 | 41 | #ifdef VMS |
ca47c89e DR |
42 | # define INO_T_EQ(A, B) (!memcmp (&(A), &(B), sizeof (A))) |
43 | # define INO_T_COPY(DEST, SRC) memcpy(&(DEST), &(SRC), sizeof (SRC)) | |
88ae23e7 | 44 | #else |
3943e756 | 45 | # if (defined _WIN32 && ! defined (_UWIN)) || defined __MSDOS__ |
ca47c89e | 46 | # define INO_T_EQ(A, B) 0 |
3943e756 | 47 | # else |
ca47c89e | 48 | # define INO_T_EQ(A, B) ((A) == (B)) |
3943e756 | 49 | # endif |
ca47c89e | 50 | # define INO_T_COPY(DEST, SRC) (DEST) = (SRC) |
88ae23e7 ZW |
51 | #endif |
52 | ||
4a58aab6 | 53 | /* Internal structures and prototypes. */ |
6de1e2a9 | 54 | |
4a58aab6 NB |
55 | /* A `struct pending_option' remembers one -D, -A, -U, -include, or |
56 | -imacros switch. */ | |
8be1ddca | 57 | typedef void (* cl_directive_handler) PARAMS ((cpp_reader *, const char *)); |
0b22d65c | 58 | struct pending_option |
6de1e2a9 | 59 | { |
0b22d65c | 60 | struct pending_option *next; |
7ceb3598 | 61 | const char *arg; |
40eac643 | 62 | cl_directive_handler handler; |
6de1e2a9 | 63 | }; |
0b22d65c | 64 | |
88ae23e7 | 65 | /* The `pending' structure accumulates all the options that are not |
f5e99456 | 66 | actually processed until we hit cpp_read_main_file. It consists of |
88ae23e7 | 67 | several lists, one for each type of option. We keep both head and |
4a58aab6 | 68 | tail pointers for quick insertion. */ |
88ae23e7 ZW |
69 | struct cpp_pending |
70 | { | |
40eac643 | 71 | struct pending_option *directive_head, *directive_tail; |
88ae23e7 | 72 | |
591e15a1 NB |
73 | struct search_path *quote_head, *quote_tail; |
74 | struct search_path *brack_head, *brack_tail; | |
75 | struct search_path *systm_head, *systm_tail; | |
76 | struct search_path *after_head, *after_tail; | |
88ae23e7 ZW |
77 | |
78 | struct pending_option *imacros_head, *imacros_tail; | |
79 | struct pending_option *include_head, *include_tail; | |
80 | }; | |
81 | ||
0b22d65c ZW |
82 | #ifdef __STDC__ |
83 | #define APPEND(pend, list, elt) \ | |
84 | do { if (!(pend)->list##_head) (pend)->list##_head = (elt); \ | |
85 | else (pend)->list##_tail->next = (elt); \ | |
86 | (pend)->list##_tail = (elt); \ | |
87 | } while (0) | |
88 | #else | |
89 | #define APPEND(pend, list, elt) \ | |
90 | do { if (!(pend)->list/**/_head) (pend)->list/**/_head = (elt); \ | |
91 | else (pend)->list/**/_tail->next = (elt); \ | |
92 | (pend)->list/**/_tail = (elt); \ | |
93 | } while (0) | |
94 | #endif | |
6de1e2a9 | 95 | |
6de1e2a9 | 96 | static void print_help PARAMS ((void)); |
0b22d65c | 97 | static void path_include PARAMS ((cpp_reader *, |
0b22d65c | 98 | char *, int)); |
674c3b40 | 99 | static void init_library PARAMS ((void)); |
7ca3d2b1 | 100 | static void init_builtins PARAMS ((cpp_reader *)); |
0b22d65c | 101 | static void append_include_chain PARAMS ((cpp_reader *, |
c45da1ca | 102 | char *, int, int)); |
002ee64f | 103 | static struct search_path * remove_dup_dir PARAMS ((cpp_reader *, |
591e15a1 | 104 | struct search_path *)); |
002ee64f | 105 | static struct search_path * remove_dup_dirs PARAMS ((cpp_reader *, |
591e15a1 | 106 | struct search_path *)); |
ae79697b | 107 | static void merge_include_chains PARAMS ((cpp_reader *)); |
d7bc7a98 NB |
108 | static bool push_include PARAMS ((cpp_reader *, |
109 | struct pending_option *)); | |
110 | static void free_chain PARAMS ((struct pending_option *)); | |
dd07b884 | 111 | static void set_lang PARAMS ((cpp_reader *, enum c_lang)); |
7ca3d2b1 NB |
112 | static void init_dependency_output PARAMS ((cpp_reader *)); |
113 | static void init_standard_includes PARAMS ((cpp_reader *)); | |
f5e99456 | 114 | static void read_original_filename PARAMS ((cpp_reader *)); |
2c0accc9 | 115 | static void new_pending_directive PARAMS ((struct cpp_pending *, |
40eac643 NB |
116 | const char *, |
117 | cl_directive_handler)); | |
7ca3d2b1 | 118 | static void output_deps PARAMS ((cpp_reader *)); |
e23c0ba3 | 119 | static int parse_option PARAMS ((const char *)); |
6de1e2a9 | 120 | |
cb773845 ZW |
121 | /* Fourth argument to append_include_chain: chain to use. |
122 | Note it's never asked to append to the quote chain. */ | |
123 | enum { BRACKET = 0, SYSTEM, AFTER }; | |
6de1e2a9 | 124 | |
61d0346d NB |
125 | /* If we have designated initializers (GCC >2.7) these tables can be |
126 | initialized, constant data. Otherwise, they have to be filled in at | |
12cf91fe | 127 | runtime. */ |
61d0346d | 128 | #if HAVE_DESIGNATED_INITIALIZERS |
a9ae4483 | 129 | |
4a58aab6 | 130 | #define init_trigraph_map() /* Nothing. */ |
61d0346d | 131 | #define TRIGRAPH_MAP \ |
562a5c27 | 132 | __extension__ const uchar _cpp_trigraph_map[UCHAR_MAX + 1] = { |
61d0346d | 133 | |
a9ae4483 | 134 | #define END }; |
455d2586 | 135 | #define s(p, v) [p] = v, |
61d0346d | 136 | |
a9ae4483 | 137 | #else |
61d0346d | 138 | |
562a5c27 | 139 | #define TRIGRAPH_MAP uchar _cpp_trigraph_map[UCHAR_MAX + 1] = { 0 }; \ |
61d0346d NB |
140 | static void init_trigraph_map PARAMS ((void)) { \ |
141 | unsigned char *x = _cpp_trigraph_map; | |
142 | ||
ae79697b | 143 | #define END } |
455d2586 | 144 | #define s(p, v) x[p] = v; |
61d0346d | 145 | |
a9ae4483 | 146 | #endif |
6de1e2a9 | 147 | |
61d0346d NB |
148 | TRIGRAPH_MAP |
149 | s('=', '#') s(')', ']') s('!', '|') | |
150 | s('(', '[') s('\'', '^') s('>', '}') | |
151 | s('/', '\\') s('<', '{') s('-', '~') | |
152 | END | |
153 | ||
a9ae4483 | 154 | #undef s |
455d2586 | 155 | #undef END |
61d0346d | 156 | #undef TRIGRAPH_MAP |
6de1e2a9 ZW |
157 | |
158 | /* Given a colon-separated list of file names PATH, | |
159 | add all the names to the search path for include files. */ | |
6de1e2a9 | 160 | static void |
e33f6253 | 161 | path_include (pfile, list, path) |
6de1e2a9 | 162 | cpp_reader *pfile; |
0b22d65c ZW |
163 | char *list; |
164 | int path; | |
6de1e2a9 | 165 | { |
0b22d65c | 166 | char *p, *q, *name; |
6de1e2a9 | 167 | |
0b22d65c | 168 | p = list; |
6de1e2a9 | 169 | |
0b22d65c ZW |
170 | do |
171 | { | |
6de1e2a9 | 172 | /* Find the end of this name. */ |
0b22d65c | 173 | q = p; |
6de1e2a9 | 174 | while (*q != 0 && *q != PATH_SEPARATOR) q++; |
0b22d65c ZW |
175 | if (q == p) |
176 | { | |
177 | /* An empty name in the path stands for the current directory. */ | |
178 | name = (char *) xmalloc (2); | |
179 | name[0] = '.'; | |
180 | name[1] = 0; | |
181 | } | |
182 | else | |
183 | { | |
184 | /* Otherwise use the directory that is named. */ | |
185 | name = (char *) xmalloc (q - p + 1); | |
186 | memcpy (name, p, q - p); | |
187 | name[q - p] = 0; | |
188 | } | |
6de1e2a9 | 189 | |
e33f6253 | 190 | append_include_chain (pfile, name, path, 0); |
6de1e2a9 ZW |
191 | |
192 | /* Advance past this name. */ | |
0b22d65c | 193 | if (*q == 0) |
6de1e2a9 | 194 | break; |
0b22d65c ZW |
195 | p = q + 1; |
196 | } | |
197 | while (1); | |
198 | } | |
199 | ||
bef985f3 | 200 | /* Append DIR to include path PATH. DIR must be allocated on the |
5d8ebbd8 NB |
201 | heap; this routine takes responsibility for freeing it. CXX_AWARE |
202 | is non-zero if the header contains extern "C" guards for C++, | |
203 | otherwise it is zero. */ | |
0b22d65c | 204 | static void |
e33f6253 | 205 | append_include_chain (pfile, dir, path, cxx_aware) |
0b22d65c | 206 | cpp_reader *pfile; |
0b22d65c ZW |
207 | char *dir; |
208 | int path; | |
7d4918a2 | 209 | int cxx_aware ATTRIBUTE_UNUSED; |
0b22d65c | 210 | { |
e33f6253 | 211 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
591e15a1 | 212 | struct search_path *new; |
0b22d65c ZW |
213 | struct stat st; |
214 | unsigned int len; | |
215 | ||
f9200da2 | 216 | if (*dir == '\0') |
bef985f3 NB |
217 | { |
218 | free (dir); | |
219 | dir = xstrdup ("."); | |
220 | } | |
b0699dad | 221 | _cpp_simplify_pathname (dir); |
bef985f3 | 222 | |
0b22d65c ZW |
223 | if (stat (dir, &st)) |
224 | { | |
f9200da2 | 225 | /* Dirs that don't exist are silently ignored. */ |
0b22d65c | 226 | if (errno != ENOENT) |
ebef4e8c | 227 | cpp_errno (pfile, DL_ERROR, dir); |
ae79697b | 228 | else if (CPP_OPTION (pfile, verbose)) |
041c3194 | 229 | fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir); |
bef985f3 | 230 | free (dir); |
0b22d65c ZW |
231 | return; |
232 | } | |
233 | ||
234 | if (!S_ISDIR (st.st_mode)) | |
235 | { | |
ebef4e8c | 236 | cpp_error_with_line (pfile, DL_ERROR, 0, 0, "%s: Not a directory", dir); |
bef985f3 | 237 | free (dir); |
0b22d65c ZW |
238 | return; |
239 | } | |
240 | ||
241 | len = strlen (dir); | |
242 | if (len > pfile->max_include_len) | |
243 | pfile->max_include_len = len; | |
ae79697b | 244 | |
591e15a1 | 245 | new = (struct search_path *) xmalloc (sizeof (struct search_path)); |
0b22d65c | 246 | new->name = dir; |
591e15a1 | 247 | new->len = len; |
ca47c89e | 248 | INO_T_COPY (new->ino, st.st_ino); |
0b22d65c | 249 | new->dev = st.st_dev; |
4737b274 CF |
250 | /* Both systm and after include file lists should be treated as system |
251 | include files since these two lists are really just a concatenation | |
ec5c56db | 252 | of one "system" list. */ |
4737b274 | 253 | if (path == SYSTEM || path == AFTER) |
52b357ea JJ |
254 | #ifdef NO_IMPLICIT_EXTERN_C |
255 | new->sysp = 1; | |
256 | #else | |
c45da1ca | 257 | new->sysp = cxx_aware ? 1 : 2; |
52b357ea | 258 | #endif |
c45da1ca ZW |
259 | else |
260 | new->sysp = 0; | |
0b22d65c | 261 | new->name_map = NULL; |
503cb436 | 262 | new->next = NULL; |
0b22d65c ZW |
263 | |
264 | switch (path) | |
265 | { | |
0b22d65c ZW |
266 | case BRACKET: APPEND (pend, brack, new); break; |
267 | case SYSTEM: APPEND (pend, systm, new); break; | |
268 | case AFTER: APPEND (pend, after, new); break; | |
6de1e2a9 ZW |
269 | } |
270 | } | |
271 | ||
dd69c71b NB |
272 | /* Handle a duplicated include path. PREV is the link in the chain |
273 | before the duplicate. The duplicate is removed from the chain and | |
274 | freed. Returns PREV. */ | |
002ee64f | 275 | static struct search_path * |
dd69c71b NB |
276 | remove_dup_dir (pfile, prev) |
277 | cpp_reader *pfile; | |
591e15a1 | 278 | struct search_path *prev; |
dd69c71b | 279 | { |
591e15a1 | 280 | struct search_path *cur = prev->next; |
dd69c71b NB |
281 | |
282 | if (CPP_OPTION (pfile, verbose)) | |
283 | fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name); | |
284 | ||
285 | prev->next = cur->next; | |
591e15a1 | 286 | free ((PTR) cur->name); |
dd69c71b NB |
287 | free (cur); |
288 | ||
289 | return prev; | |
290 | } | |
291 | ||
292 | /* Remove duplicate directories from a chain. Returns the tail of the | |
293 | chain, or NULL if the chain is empty. This algorithm is quadratic | |
294 | in the number of -I switches, which is acceptable since there | |
295 | aren't usually that many of them. */ | |
002ee64f | 296 | static struct search_path * |
dd69c71b NB |
297 | remove_dup_dirs (pfile, head) |
298 | cpp_reader *pfile; | |
591e15a1 | 299 | struct search_path *head; |
dd69c71b | 300 | { |
591e15a1 | 301 | struct search_path *prev = NULL, *cur, *other; |
dd69c71b NB |
302 | |
303 | for (cur = head; cur; cur = cur->next) | |
304 | { | |
305 | for (other = head; other != cur; other = other->next) | |
306 | if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev) | |
307 | { | |
002ee64f | 308 | if (cur->sysp && !other->sysp) |
dbead49c | 309 | { |
ebef4e8c NB |
310 | cpp_error (pfile, DL_WARNING, |
311 | "changing search order for system directory \"%s\"", | |
312 | cur->name); | |
dbead49c | 313 | if (strcmp (cur->name, other->name)) |
ebef4e8c NB |
314 | cpp_error (pfile, DL_WARNING, |
315 | " as it is the same as non-system directory \"%s\"", | |
316 | other->name); | |
dbead49c | 317 | else |
ebef4e8c NB |
318 | cpp_error (pfile, DL_WARNING, |
319 | " as it has already been specified as a non-system directory"); | |
dbead49c | 320 | } |
dd69c71b NB |
321 | cur = remove_dup_dir (pfile, prev); |
322 | break; | |
323 | } | |
324 | prev = cur; | |
325 | } | |
326 | ||
327 | return prev; | |
328 | } | |
329 | ||
88ae23e7 ZW |
330 | /* Merge the four include chains together in the order quote, bracket, |
331 | system, after. Remove duplicate dirs (as determined by | |
332 | INO_T_EQ()). The system_include and after_include chains are never | |
333 | referred to again after this function; all access is through the | |
5d8ebbd8 | 334 | bracket_include path. */ |
88ae23e7 | 335 | static void |
ae79697b ZW |
336 | merge_include_chains (pfile) |
337 | cpp_reader *pfile; | |
88ae23e7 | 338 | { |
591e15a1 | 339 | struct search_path *quote, *brack, *systm, *qtail; |
88ae23e7 | 340 | |
ae79697b | 341 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
88ae23e7 | 342 | |
ae79697b ZW |
343 | quote = pend->quote_head; |
344 | brack = pend->brack_head; | |
345 | systm = pend->systm_head; | |
dd69c71b | 346 | qtail = pend->quote_tail; |
88ae23e7 | 347 | |
dd69c71b NB |
348 | /* Paste together bracket, system, and after include chains. */ |
349 | if (systm) | |
350 | pend->systm_tail->next = pend->after_head; | |
88ae23e7 | 351 | else |
dd69c71b NB |
352 | systm = pend->after_head; |
353 | ||
354 | if (brack) | |
355 | pend->brack_tail->next = systm; | |
88ae23e7 ZW |
356 | else |
357 | brack = systm; | |
358 | ||
dd69c71b NB |
359 | /* This is a bit tricky. First we drop dupes from the quote-include |
360 | list. Then we drop dupes from the bracket-include list. | |
361 | Finally, if qtail and brack are the same directory, we cut out | |
cb773845 | 362 | brack and move brack up to point to qtail. |
88ae23e7 ZW |
363 | |
364 | We can't just merge the lists and then uniquify them because | |
365 | then we may lose directories from the <> search path that should | |
366 | be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however | |
367 | safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written | |
dd69c71b | 368 | -Ibar -I- -Ifoo -Iquux. */ |
88ae23e7 | 369 | |
dd69c71b NB |
370 | remove_dup_dirs (pfile, brack); |
371 | qtail = remove_dup_dirs (pfile, quote); | |
88ae23e7 ZW |
372 | |
373 | if (quote) | |
374 | { | |
dd69c71b NB |
375 | qtail->next = brack; |
376 | ||
377 | /* If brack == qtail, remove brack as it's simpler. */ | |
afb58288 ZW |
378 | if (brack && INO_T_EQ (qtail->ino, brack->ino) |
379 | && qtail->dev == brack->dev) | |
dd69c71b | 380 | brack = remove_dup_dir (pfile, qtail); |
88ae23e7 ZW |
381 | } |
382 | else | |
bef985f3 | 383 | quote = brack; |
88ae23e7 | 384 | |
ae79697b ZW |
385 | CPP_OPTION (pfile, quote_include) = quote; |
386 | CPP_OPTION (pfile, bracket_include) = brack; | |
88ae23e7 ZW |
387 | } |
388 | ||
5d8ebbd8 NB |
389 | /* A set of booleans indicating what CPP features each source language |
390 | requires. */ | |
a01eb545 ZW |
391 | struct lang_flags |
392 | { | |
393 | char c99; | |
a01eb545 ZW |
394 | char cplusplus; |
395 | char extended_numbers; | |
396 | char trigraphs; | |
397 | char dollars_in_ident; | |
398 | char cplusplus_comments; | |
399 | char digraphs; | |
400 | }; | |
401 | ||
402 | /* ??? Enable $ in identifiers in assembly? */ | |
403 | static const struct lang_flags lang_defaults[] = | |
bdcae02b NB |
404 | { /* c99 c++ xnum trig dollar c++comm digr */ |
405 | /* GNUC89 */ { 0, 0, 1, 0, 1, 1, 1 }, | |
406 | /* GNUC99 */ { 1, 0, 1, 0, 1, 1, 1 }, | |
407 | /* STDC89 */ { 0, 0, 0, 1, 0, 0, 0 }, | |
408 | /* STDC94 */ { 0, 0, 0, 1, 0, 0, 1 }, | |
409 | /* STDC99 */ { 1, 0, 1, 1, 0, 1, 1 }, | |
410 | /* GNUCXX */ { 0, 1, 1, 0, 1, 1, 1 }, | |
411 | /* CXX98 */ { 0, 1, 1, 1, 0, 1, 1 }, | |
412 | /* ASM */ { 0, 0, 1, 0, 0, 1, 0 } | |
a01eb545 ZW |
413 | }; |
414 | ||
5d8ebbd8 | 415 | /* Sets internal flags correctly for a given language. */ |
dd07b884 NB |
416 | static void |
417 | set_lang (pfile, lang) | |
418 | cpp_reader *pfile; | |
419 | enum c_lang lang; | |
420 | { | |
a01eb545 ZW |
421 | const struct lang_flags *l = &lang_defaults[(int) lang]; |
422 | ||
bdb05a7b | 423 | CPP_OPTION (pfile, lang) = lang; |
dd07b884 | 424 | |
a01eb545 | 425 | CPP_OPTION (pfile, c99) = l->c99; |
a01eb545 ZW |
426 | CPP_OPTION (pfile, cplusplus) = l->cplusplus; |
427 | CPP_OPTION (pfile, extended_numbers) = l->extended_numbers; | |
428 | CPP_OPTION (pfile, trigraphs) = l->trigraphs; | |
429 | CPP_OPTION (pfile, dollars_in_ident) = l->dollars_in_ident; | |
430 | CPP_OPTION (pfile, cplusplus_comments) = l->cplusplus_comments; | |
431 | CPP_OPTION (pfile, digraphs) = l->digraphs; | |
dd07b884 NB |
432 | } |
433 | ||
7ca3d2b1 NB |
434 | #ifdef HOST_EBCDIC |
435 | static int opt_comp PARAMS ((const void *, const void *)); | |
436 | ||
437 | /* Run-time sorting of options array. */ | |
438 | static int | |
439 | opt_comp (p1, p2) | |
440 | const void *p1, *p2; | |
441 | { | |
442 | return strcmp (((struct cl_option *) p1)->opt_text, | |
443 | ((struct cl_option *) p2)->opt_text); | |
444 | } | |
445 | #endif | |
cf44ea52 | 446 | |
7ca3d2b1 NB |
447 | /* init initializes library global state. It might not need to |
448 | do anything depending on the platform and compiler. */ | |
cf44ea52 | 449 | static void |
674c3b40 | 450 | init_library () |
cf44ea52 | 451 | { |
7ca3d2b1 NB |
452 | static int initialized = 0; |
453 | ||
454 | if (! initialized) | |
455 | { | |
456 | initialized = 1; | |
457 | ||
cf44ea52 | 458 | #ifdef HOST_EBCDIC |
7ca3d2b1 NB |
459 | /* For non-ASCII hosts, the cl_options array needs to be sorted at |
460 | runtime. */ | |
461 | qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp); | |
cf44ea52 NB |
462 | #endif |
463 | ||
7ca3d2b1 NB |
464 | /* Set up the trigraph map. This doesn't need to do anything if |
465 | we were compiled with a compiler that supports C99 designated | |
466 | initializers. */ | |
467 | init_trigraph_map (); | |
468 | } | |
cf44ea52 NB |
469 | } |
470 | ||
ec5c56db | 471 | /* Initialize a cpp_reader structure. */ |
cf44ea52 | 472 | cpp_reader * |
f5e99456 | 473 | cpp_create_reader (lang) |
dd07b884 | 474 | enum c_lang lang; |
6de1e2a9 | 475 | { |
7ca3d2b1 | 476 | cpp_reader *pfile; |
93c80368 | 477 | |
cf44ea52 | 478 | /* Initialise this instance of the library if it hasn't been already. */ |
674c3b40 | 479 | init_library (); |
7ca3d2b1 NB |
480 | |
481 | pfile = (cpp_reader *) xcalloc (1, sizeof (cpp_reader)); | |
93c80368 | 482 | |
c740cee2 | 483 | set_lang (pfile, lang); |
ae79697b | 484 | CPP_OPTION (pfile, warn_import) = 1; |
a5a49440 | 485 | CPP_OPTION (pfile, warn_multichar) = 1; |
ae79697b | 486 | CPP_OPTION (pfile, discard_comments) = 1; |
477cdac7 | 487 | CPP_OPTION (pfile, discard_comments_in_macro_exp) = 1; |
ae79697b | 488 | CPP_OPTION (pfile, show_column) = 1; |
6ab3e7dd | 489 | CPP_OPTION (pfile, tabstop) = 8; |
be768055 | 490 | CPP_OPTION (pfile, operator_names) = 1; |
909de5da | 491 | CPP_OPTION (pfile, warn_endif_labels) = 1; |
ae79697b ZW |
492 | |
493 | CPP_OPTION (pfile, pending) = | |
494 | (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending)); | |
495 | ||
2443d4e1 NB |
496 | /* Default CPP arithmetic to something sensible for the host for the |
497 | benefit of dumb users like fix-header. */ | |
4268e8bb NB |
498 | #define BITS_PER_HOST_WIDEST_INT (CHAR_BIT * sizeof (HOST_WIDEST_INT)) |
499 | CPP_OPTION (pfile, precision) = BITS_PER_HOST_WIDEST_INT; | |
2443d4e1 NB |
500 | CPP_OPTION (pfile, char_precision) = CHAR_BIT; |
501 | CPP_OPTION (pfile, wchar_precision) = CHAR_BIT * sizeof (int); | |
502 | CPP_OPTION (pfile, int_precision) = CHAR_BIT * sizeof (int); | |
44a147ad NB |
503 | CPP_OPTION (pfile, unsigned_char) = !DEFAULT_SIGNED_CHAR; |
504 | CPP_OPTION (pfile, unsigned_wchar) = 1; | |
4268e8bb | 505 | |
f7114e17 NB |
506 | /* It's simplest to just create this struct whether or not it will |
507 | be needed. */ | |
508 | pfile->deps = deps_init (); | |
509 | ||
50410426 NB |
510 | /* Initialise the line map. Start at logical line 1, so we can use |
511 | a line number of zero for special states. */ | |
d82fc108 | 512 | init_line_maps (&pfile->line_maps); |
004cb263 | 513 | pfile->trad_line = pfile->line = 1; |
d82fc108 | 514 | |
4a58aab6 | 515 | /* Initialize lexer state. */ |
93c80368 NB |
516 | pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments); |
517 | ||
4ed5bcfb | 518 | /* Set up static tokens. */ |
93c80368 | 519 | pfile->date.type = CPP_EOF; |
4ed5bcfb NB |
520 | pfile->avoid_paste.type = CPP_PADDING; |
521 | pfile->avoid_paste.val.source = NULL; | |
522 | pfile->eof.type = CPP_EOF; | |
523 | pfile->eof.flags = 0; | |
93c80368 | 524 | |
5fddcffc NB |
525 | /* Create a token buffer for the lexer. */ |
526 | _cpp_init_tokenrun (&pfile->base_run, 250); | |
527 | pfile->cur_run = &pfile->base_run; | |
528 | pfile->cur_token = pfile->base_run.base; | |
5fddcffc | 529 | |
93c80368 NB |
530 | /* Initialise the base context. */ |
531 | pfile->context = &pfile->base_context; | |
532 | pfile->base_context.macro = 0; | |
533 | pfile->base_context.prev = pfile->base_context.next = 0; | |
534 | ||
8c3b2693 NB |
535 | /* Aligned and unaligned storage. */ |
536 | pfile->a_buff = _cpp_get_buff (pfile, 0); | |
ece54d54 | 537 | pfile->u_buff = _cpp_get_buff (pfile, 0); |
93c80368 | 538 | |
87ed109f NB |
539 | /* The expression parser stack. */ |
540 | _cpp_expand_op_stack (pfile); | |
541 | ||
2a967f3d NB |
542 | /* Initialise the buffer obstack. */ |
543 | gcc_obstack_init (&pfile->buffer_ob); | |
544 | ||
c71f835b | 545 | _cpp_init_includes (pfile); |
cf44ea52 NB |
546 | |
547 | return pfile; | |
f2d5f0cc ZW |
548 | } |
549 | ||
400023a3 | 550 | /* Free resources used by PFILE. Accessing PFILE after this function |
5d8ebbd8 | 551 | returns leads to undefined behaviour. Returns the error count. */ |
400023a3 NB |
552 | int |
553 | cpp_destroy (pfile) | |
6de1e2a9 ZW |
554 | cpp_reader *pfile; |
555 | { | |
400023a3 | 556 | int result; |
591e15a1 | 557 | struct search_path *dir, *dirn; |
93c80368 | 558 | cpp_context *context, *contextn; |
50410426 | 559 | tokenrun *run, *runn; |
709e9e50 | 560 | |
af0d16cd NB |
561 | free_chain (CPP_OPTION (pfile, pending)->include_head); |
562 | free (CPP_OPTION (pfile, pending)); | |
87ed109f | 563 | free (pfile->op_stack); |
af0d16cd | 564 | |
38b24ee2 | 565 | while (CPP_BUFFER (pfile) != NULL) |
ef6e958a | 566 | _cpp_pop_buffer (pfile); |
6de1e2a9 | 567 | |
004cb263 NB |
568 | if (pfile->trad_out_base) |
569 | free (pfile->trad_out_base); | |
570 | ||
93c80368 | 571 | if (pfile->macro_buffer) |
4b49c365 AO |
572 | { |
573 | free ((PTR) pfile->macro_buffer); | |
574 | pfile->macro_buffer = NULL; | |
575 | pfile->macro_buffer_len = 0; | |
576 | } | |
93c80368 | 577 | |
f7114e17 | 578 | deps_free (pfile->deps); |
2a967f3d | 579 | obstack_free (&pfile->buffer_ob, 0); |
49e6c08e | 580 | |
2a967f3d | 581 | _cpp_destroy_hashtable (pfile); |
bfb9dc7f | 582 | _cpp_cleanup_includes (pfile); |
709e9e50 | 583 | |
8c3b2693 | 584 | _cpp_free_buff (pfile->a_buff); |
ece54d54 | 585 | _cpp_free_buff (pfile->u_buff); |
b8af0ca5 | 586 | _cpp_free_buff (pfile->free_buffs); |
93c80368 | 587 | |
50410426 NB |
588 | for (run = &pfile->base_run; run; run = runn) |
589 | { | |
590 | runn = run->next; | |
591 | free (run->base); | |
592 | if (run != &pfile->base_run) | |
593 | free (run); | |
594 | } | |
595 | ||
93c80368 | 596 | for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn) |
709e9e50 | 597 | { |
93c80368 | 598 | dirn = dir->next; |
591e15a1 | 599 | free ((PTR) dir->name); |
709e9e50 NB |
600 | free (dir); |
601 | } | |
93c80368 NB |
602 | |
603 | for (context = pfile->base_context.next; context; context = contextn) | |
604 | { | |
605 | contextn = context->next; | |
606 | free (context); | |
607 | } | |
400023a3 | 608 | |
d82fc108 NB |
609 | free_line_maps (&pfile->line_maps); |
610 | ||
400023a3 NB |
611 | result = pfile->errors; |
612 | free (pfile); | |
613 | ||
614 | return result; | |
6de1e2a9 ZW |
615 | } |
616 | ||
93c80368 | 617 | /* This structure defines one built-in identifier. A node will be |
f24a153a ZW |
618 | entered in the hash table under the name NAME, with value VALUE. |
619 | ||
620 | There are two tables of these. builtin_array holds all the | |
621 | "builtin" macros: these are handled by builtin_macro() in | |
622 | cppmacro.c. Builtin is somewhat of a misnomer -- the property of | |
623 | interest is that these macros require special code to compute their | |
624 | expansions. The value is a "builtin_type" enumerator. | |
625 | ||
626 | operator_array holds the C++ named operators. These are keywords | |
627 | which act as aliases for punctuators. In C++, they cannot be | |
628 | altered through #define, and #if recognizes them as operators. In | |
629 | C, these are not entered into the hash table at all (but see | |
630 | <iso646.h>). The value is a token-type enumerator. */ | |
a9ae4483 ZW |
631 | struct builtin |
632 | { | |
562a5c27 | 633 | const uchar *name; |
93c80368 | 634 | unsigned short len; |
f24a153a | 635 | unsigned short value; |
a9ae4483 | 636 | }; |
93c80368 | 637 | |
f24a153a | 638 | #define B(n, t) { DSC(n), t } |
a9ae4483 | 639 | static const struct builtin builtin_array[] = |
6de1e2a9 | 640 | { |
93c80368 NB |
641 | B("__TIME__", BT_TIME), |
642 | B("__DATE__", BT_DATE), | |
643 | B("__FILE__", BT_FILE), | |
644 | B("__BASE_FILE__", BT_BASE_FILE), | |
645 | B("__LINE__", BT_SPECLINE), | |
646 | B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL), | |
644eddaa | 647 | B("_Pragma", BT_PRAGMA), |
618cdda7 | 648 | B("__STDC__", BT_STDC), |
f24a153a | 649 | }; |
92936ecf | 650 | |
f24a153a ZW |
651 | static const struct builtin operator_array[] = |
652 | { | |
653 | B("and", CPP_AND_AND), | |
654 | B("and_eq", CPP_AND_EQ), | |
655 | B("bitand", CPP_AND), | |
656 | B("bitor", CPP_OR), | |
657 | B("compl", CPP_COMPL), | |
658 | B("not", CPP_NOT), | |
659 | B("not_eq", CPP_NOT_EQ), | |
660 | B("or", CPP_OR_OR), | |
661 | B("or_eq", CPP_OR_EQ), | |
662 | B("xor", CPP_XOR), | |
663 | B("xor_eq", CPP_XOR_EQ) | |
a9ae4483 | 664 | }; |
12cf91fe | 665 | #undef B |
a9ae4483 | 666 | |
f5e99456 | 667 | /* Subroutine of cpp_read_main_file; reads the builtins table above and |
5d8ebbd8 | 668 | enters them, and language-specific macros, into the hash table. */ |
a9ae4483 | 669 | static void |
7ca3d2b1 | 670 | init_builtins (pfile) |
a9ae4483 ZW |
671 | cpp_reader *pfile; |
672 | { | |
a9ae4483 | 673 | const struct builtin *b; |
771c4df3 | 674 | |
f24a153a ZW |
675 | for(b = builtin_array; |
676 | b < (builtin_array + ARRAY_SIZE (builtin_array)); | |
677 | b++) | |
6de1e2a9 | 678 | { |
f24a153a ZW |
679 | cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len); |
680 | hp->type = NT_MACRO; | |
681 | hp->flags |= NODE_BUILTIN | NODE_WARN; | |
682 | hp->value.builtin = b->value; | |
6de1e2a9 | 683 | } |
c740cee2 | 684 | |
f24a153a ZW |
685 | if (CPP_OPTION (pfile, cplusplus) && CPP_OPTION (pfile, operator_names)) |
686 | for (b = operator_array; | |
687 | b < (operator_array + ARRAY_SIZE (operator_array)); | |
688 | b++) | |
689 | { | |
690 | cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len); | |
691 | hp->flags |= NODE_OPERATOR; | |
692 | hp->value.operator = b->value; | |
693 | } | |
694 | ||
c740cee2 | 695 | if (CPP_OPTION (pfile, cplusplus)) |
3d90d290 NB |
696 | _cpp_define_builtin (pfile, "__cplusplus 1"); |
697 | ||
c740cee2 NB |
698 | if (CPP_OPTION (pfile, objc)) |
699 | _cpp_define_builtin (pfile, "__OBJC__ 1"); | |
700 | ||
701 | if (CPP_OPTION (pfile, lang) == CLK_STDC94) | |
702 | _cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L"); | |
703 | else if (CPP_OPTION (pfile, c99)) | |
704 | _cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L"); | |
705 | ||
44a147ad | 706 | if (CPP_OPTION (pfile, unsigned_char)) |
0fef3fd0 NB |
707 | _cpp_define_builtin (pfile, "__CHAR_UNSIGNED__ 1"); |
708 | ||
c740cee2 NB |
709 | if (CPP_OPTION (pfile, lang) == CLK_STDC89 |
710 | || CPP_OPTION (pfile, lang) == CLK_STDC94 | |
711 | || CPP_OPTION (pfile, lang) == CLK_STDC99) | |
712 | _cpp_define_builtin (pfile, "__STRICT_ANSI__ 1"); | |
713 | else if (CPP_OPTION (pfile, lang) == CLK_ASM) | |
714 | _cpp_define_builtin (pfile, "__ASSEMBLER__ 1"); | |
3d90d290 NB |
715 | |
716 | if (pfile->cb.register_builtins) | |
717 | (*pfile->cb.register_builtins) (pfile); | |
6de1e2a9 ZW |
718 | } |
719 | ||
c45da1ca ZW |
720 | /* And another subroutine. This one sets up the standard include path. */ |
721 | static void | |
7ca3d2b1 | 722 | init_standard_includes (pfile) |
c45da1ca ZW |
723 | cpp_reader *pfile; |
724 | { | |
c45da1ca | 725 | char *path; |
455d2586 | 726 | const struct default_include *p; |
ae79697b | 727 | const char *specd_prefix = CPP_OPTION (pfile, include_prefix); |
c45da1ca ZW |
728 | |
729 | /* Several environment variables may add to the include search path. | |
730 | CPATH specifies an additional list of directories to be searched | |
731 | as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH, | |
732 | etc. specify an additional list of directories to be searched as | |
733 | if specified with -isystem, for the language indicated. */ | |
734 | ||
735 | GET_ENV_PATH_LIST (path, "CPATH"); | |
736 | if (path != 0 && *path != 0) | |
e33f6253 | 737 | path_include (pfile, path, BRACKET); |
c45da1ca | 738 | |
ae79697b | 739 | switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus)) |
c45da1ca ZW |
740 | { |
741 | case 0: | |
742 | GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH"); | |
743 | break; | |
744 | case 1: | |
745 | GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH"); | |
746 | break; | |
747 | case 2: | |
748 | GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH"); | |
749 | break; | |
750 | case 3: | |
751 | GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH"); | |
752 | break; | |
753 | } | |
754 | if (path != 0 && *path != 0) | |
e33f6253 | 755 | path_include (pfile, path, SYSTEM); |
c45da1ca ZW |
756 | |
757 | /* Search "translated" versions of GNU directories. | |
758 | These have /usr/local/lib/gcc... replaced by specd_prefix. */ | |
60893f43 | 759 | if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len) |
c45da1ca | 760 | { |
c45da1ca | 761 | /* Remove the `include' from /usr/local/lib/gcc.../include. |
ec5c56db | 762 | GCC_INCLUDE_DIR will always end in /include. */ |
60893f43 ZW |
763 | int default_len = cpp_GCC_INCLUDE_DIR_len; |
764 | char *default_prefix = (char *) alloca (default_len + 1); | |
c45da1ca ZW |
765 | int specd_len = strlen (specd_prefix); |
766 | ||
60893f43 | 767 | memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len); |
c45da1ca ZW |
768 | default_prefix[default_len] = '\0'; |
769 | ||
60893f43 | 770 | for (p = cpp_include_defaults; p->fname; p++) |
c45da1ca ZW |
771 | { |
772 | /* Some standard dirs are only for C++. */ | |
773 | if (!p->cplusplus | |
ae79697b ZW |
774 | || (CPP_OPTION (pfile, cplusplus) |
775 | && !CPP_OPTION (pfile, no_standard_cplusplus_includes))) | |
c45da1ca ZW |
776 | { |
777 | /* Does this dir start with the prefix? */ | |
61d0346d | 778 | if (!memcmp (p->fname, default_prefix, default_len)) |
c45da1ca ZW |
779 | { |
780 | /* Yes; change prefix and add to search list. */ | |
781 | int flen = strlen (p->fname); | |
782 | int this_len = specd_len + flen - default_len; | |
783 | char *str = (char *) xmalloc (this_len + 1); | |
784 | memcpy (str, specd_prefix, specd_len); | |
785 | memcpy (str + specd_len, | |
786 | p->fname + default_len, | |
787 | flen - default_len + 1); | |
788 | ||
e33f6253 | 789 | append_include_chain (pfile, str, SYSTEM, p->cxx_aware); |
c45da1ca ZW |
790 | } |
791 | } | |
792 | } | |
793 | } | |
794 | ||
795 | /* Search ordinary names for GNU include directories. */ | |
60893f43 | 796 | for (p = cpp_include_defaults; p->fname; p++) |
c45da1ca ZW |
797 | { |
798 | /* Some standard dirs are only for C++. */ | |
799 | if (!p->cplusplus | |
ae79697b ZW |
800 | || (CPP_OPTION (pfile, cplusplus) |
801 | && !CPP_OPTION (pfile, no_standard_cplusplus_includes))) | |
c45da1ca | 802 | { |
51c04256 | 803 | char *str = update_path (p->fname, p->component); |
e33f6253 | 804 | append_include_chain (pfile, str, SYSTEM, p->cxx_aware); |
c45da1ca ZW |
805 | } |
806 | } | |
807 | } | |
808 | ||
5d8ebbd8 | 809 | /* Pushes a command line -imacro and -include file indicated by P onto |
d7bc7a98 NB |
810 | the buffer stack. Returns non-zero if successful. */ |
811 | static bool | |
812 | push_include (pfile, p) | |
4a58aab6 NB |
813 | cpp_reader *pfile; |
814 | struct pending_option *p; | |
4a58aab6 | 815 | { |
d7bc7a98 | 816 | cpp_token header; |
4a58aab6 | 817 | |
d7bc7a98 NB |
818 | /* Later: maybe update this to use the #include "" search path |
819 | if cpp_read_file fails. */ | |
820 | header.type = CPP_STRING; | |
821 | header.val.str.text = (const unsigned char *) p->arg; | |
822 | header.val.str.len = strlen (p->arg); | |
823 | /* Make the command line directive take up a line. */ | |
50410426 | 824 | pfile->line++; |
d7bc7a98 NB |
825 | |
826 | return _cpp_execute_include (pfile, &header, IT_CMDLINE); | |
827 | } | |
828 | ||
829 | /* Frees a pending_option chain. */ | |
830 | static void | |
831 | free_chain (head) | |
832 | struct pending_option *head; | |
833 | { | |
834 | struct pending_option *next; | |
835 | ||
836 | while (head) | |
837 | { | |
838 | next = head->next; | |
839 | free (head); | |
840 | head = next; | |
4a58aab6 NB |
841 | } |
842 | } | |
843 | ||
2443d4e1 NB |
844 | /* Sanity-checks are dependent on command-line options, so it is |
845 | called as a subroutine of cpp_read_main_file (). */ | |
846 | #if ENABLE_CHECKING | |
847 | static void sanity_checks PARAMS ((cpp_reader *)); | |
848 | static void sanity_checks (pfile) | |
849 | cpp_reader *pfile; | |
850 | { | |
851 | cppchar_t test = 0; | |
852 | ||
853 | /* Sanity checks for assumptions about CPP arithmetic and target | |
854 | type precisions made by cpplib. */ | |
855 | test--; | |
856 | if (test < 1) | |
857 | cpp_error (pfile, DL_FATAL, "cppchar_t must be an unsigned type"); | |
858 | ||
859 | if (CPP_OPTION (pfile, precision) > BITS_PER_HOST_WIDEST_INT) | |
860 | cpp_error (pfile, DL_FATAL, | |
861 | "preprocessor arithmetic has maximum precision of %u bits; target requires %u bits", | |
862 | BITS_PER_HOST_WIDEST_INT, CPP_OPTION (pfile, precision)); | |
863 | ||
864 | if (CPP_OPTION (pfile, precision) < CPP_OPTION (pfile, int_precision)) | |
865 | cpp_error (pfile, DL_FATAL, | |
866 | "CPP arithmetic must be at least as precise as a target int"); | |
867 | ||
868 | if (CPP_OPTION (pfile, char_precision) < 8) | |
869 | cpp_error (pfile, DL_FATAL, "target char is less than 8 bits wide"); | |
870 | ||
871 | if (CPP_OPTION (pfile, wchar_precision) < CPP_OPTION (pfile, char_precision)) | |
872 | cpp_error (pfile, DL_FATAL, | |
873 | "target wchar_t is narrower than target char"); | |
874 | ||
875 | if (CPP_OPTION (pfile, int_precision) < CPP_OPTION (pfile, char_precision)) | |
876 | cpp_error (pfile, DL_FATAL, | |
877 | "target int is narrower than target char"); | |
878 | ||
879 | if (CPP_OPTION (pfile, wchar_precision) > BITS_PER_CPPCHAR_T) | |
880 | cpp_error (pfile, DL_FATAL, | |
881 | "CPP on this host cannot handle wide character constants over %u bits, but the target requires %u bits", | |
882 | BITS_PER_CPPCHAR_T, CPP_OPTION (pfile, wchar_precision)); | |
883 | } | |
884 | #else | |
885 | # define sanity_checks(PFILE) | |
886 | #endif | |
887 | ||
f5e99456 NB |
888 | /* This is called after options have been parsed, and partially |
889 | processed. Setup for processing input from the file named FNAME, | |
890 | or stdin if it is the empty string. Return the original filename | |
891 | on success (e.g. foo.i->foo.c), or NULL on failure. */ | |
892 | const char * | |
893 | cpp_read_main_file (pfile, fname, table) | |
6de1e2a9 | 894 | cpp_reader *pfile; |
7ceb3598 | 895 | const char *fname; |
f5e99456 | 896 | hash_table *table; |
6de1e2a9 | 897 | { |
2443d4e1 NB |
898 | sanity_checks (pfile); |
899 | ||
f5e99456 NB |
900 | /* The front ends don't set up the hash table until they have |
901 | finished processing the command line options, so initializing the | |
902 | hashtable is deferred until now. */ | |
903 | _cpp_init_hashtable (pfile, table); | |
904 | ||
c45da1ca | 905 | /* Set up the include search path now. */ |
ae79697b | 906 | if (! CPP_OPTION (pfile, no_standard_includes)) |
7ca3d2b1 | 907 | init_standard_includes (pfile); |
c45da1ca | 908 | |
ae79697b | 909 | merge_include_chains (pfile); |
c45da1ca ZW |
910 | |
911 | /* With -v, print the list of dirs to search. */ | |
ae79697b | 912 | if (CPP_OPTION (pfile, verbose)) |
c45da1ca | 913 | { |
591e15a1 | 914 | struct search_path *l; |
c45da1ca | 915 | fprintf (stderr, _("#include \"...\" search starts here:\n")); |
ae79697b | 916 | for (l = CPP_OPTION (pfile, quote_include); l; l = l->next) |
c45da1ca | 917 | { |
ae79697b | 918 | if (l == CPP_OPTION (pfile, bracket_include)) |
c45da1ca ZW |
919 | fprintf (stderr, _("#include <...> search starts here:\n")); |
920 | fprintf (stderr, " %s\n", l->name); | |
921 | } | |
922 | fprintf (stderr, _("End of search list.\n")); | |
923 | } | |
924 | ||
96302433 | 925 | if (CPP_OPTION (pfile, print_deps)) |
7855db7c | 926 | /* Set the default target (if there is none already). */ |
373e2177 | 927 | deps_add_default_target (pfile->deps, fname); |
96302433 | 928 | |
f5e99456 | 929 | /* Open the main input file. */ |
614c7d37 | 930 | if (!_cpp_read_file (pfile, fname)) |
f5e99456 | 931 | return NULL; |
c45da1ca | 932 | |
5993019d NB |
933 | /* Set this after cpp_post_options so the client can change the |
934 | option if it wishes, and after stacking the main file so we don't | |
935 | trace the main file. */ | |
936 | pfile->line_maps.trace_includes = CPP_OPTION (pfile, print_include_names); | |
937 | ||
f5e99456 NB |
938 | /* For foo.i, read the original filename foo.c now, for the benefit |
939 | of the front ends. */ | |
940 | if (CPP_OPTION (pfile, preprocessed)) | |
941 | read_original_filename (pfile); | |
004cb263 NB |
942 | /* Overlay an empty buffer to seed traditional preprocessing. */ |
943 | else if (CPP_OPTION (pfile, traditional)) | |
944 | _cpp_overlay_buffer (pfile, U"", 0); | |
f5e99456 NB |
945 | |
946 | return pfile->map->to_file; | |
947 | } | |
948 | ||
949 | /* For preprocessed files, if the first tokens are of the form # NUM. | |
950 | handle the directive so we know the original file name. This will | |
951 | generate file_change callbacks, which the front ends must handle | |
952 | appropriately given their state of initialization. */ | |
953 | static void | |
954 | read_original_filename (pfile) | |
955 | cpp_reader *pfile; | |
956 | { | |
957 | const cpp_token *token, *token1; | |
958 | ||
959 | /* Lex ahead; if the first tokens are of the form # NUM, then | |
960 | process the directive, otherwise back up. */ | |
961 | token = _cpp_lex_direct (pfile); | |
962 | if (token->type == CPP_HASH) | |
963 | { | |
964 | token1 = _cpp_lex_direct (pfile); | |
965 | _cpp_backup_tokens (pfile, 1); | |
966 | ||
967 | /* If it's a #line directive, handle it. */ | |
968 | if (token1->type == CPP_NUMBER) | |
969 | { | |
970 | _cpp_handle_directive (pfile, token->flags & PREV_WHITE); | |
971 | return; | |
972 | } | |
973 | } | |
974 | ||
975 | /* Backup as if nothing happened. */ | |
976 | _cpp_backup_tokens (pfile, 1); | |
977 | } | |
978 | ||
979 | /* Handle pending command line options: -D, -U, -A, -imacros and | |
980 | -include. This should be called after debugging has been properly | |
981 | set up in the front ends. */ | |
982 | void | |
983 | cpp_finish_options (pfile) | |
984 | cpp_reader *pfile; | |
985 | { | |
d7bc7a98 NB |
986 | /* Install builtins and process command line macros etc. in the order |
987 | they appeared, but only if not already preprocessed. */ | |
05e81724 | 988 | if (! CPP_OPTION (pfile, preprocessed)) |
6de1e2a9 | 989 | { |
d7bc7a98 NB |
990 | struct pending_option *p; |
991 | ||
b0287a90 | 992 | _cpp_do_file_change (pfile, LC_RENAME, _("<built-in>"), 1, 0); |
004cb263 NB |
993 | if (!CPP_OPTION (pfile, traditional) /* REMOVEME */) |
994 | init_builtins (pfile); | |
d7bc7a98 | 995 | _cpp_do_file_change (pfile, LC_RENAME, _("<command line>"), 1, 0); |
004cb263 NB |
996 | if (!CPP_OPTION (pfile, traditional) /* REMOVEME */) |
997 | for (p = CPP_OPTION (pfile, pending)->directive_head; p; p = p->next) | |
998 | (*p->handler) (pfile, p->arg); | |
d7bc7a98 | 999 | |
af0d16cd NB |
1000 | /* Scan -imacros files after -D, -U, but before -include. |
1001 | pfile->next_include_file is NULL, so _cpp_pop_buffer does not | |
1002 | push -include files. */ | |
1003 | for (p = CPP_OPTION (pfile, pending)->imacros_head; p; p = p->next) | |
1004 | if (push_include (pfile, p)) | |
1005 | cpp_scan_nooutput (pfile); | |
1006 | ||
1007 | pfile->next_include_file = &CPP_OPTION (pfile, pending)->include_head; | |
1008 | _cpp_maybe_push_include_file (pfile); | |
6de1e2a9 | 1009 | } |
05e81724 | 1010 | |
af0d16cd | 1011 | free_chain (CPP_OPTION (pfile, pending)->imacros_head); |
d7bc7a98 | 1012 | free_chain (CPP_OPTION (pfile, pending)->directive_head); |
d7bc7a98 | 1013 | } |
6de1e2a9 | 1014 | |
af0d16cd NB |
1015 | /* Push the next buffer on the stack given by -include, if any. */ |
1016 | void | |
1017 | _cpp_maybe_push_include_file (pfile) | |
d7bc7a98 NB |
1018 | cpp_reader *pfile; |
1019 | { | |
af0d16cd | 1020 | if (pfile->next_include_file) |
d7bc7a98 | 1021 | { |
af0d16cd NB |
1022 | struct pending_option *head = *pfile->next_include_file; |
1023 | ||
1024 | while (head && !push_include (pfile, head)) | |
1025 | head = head->next; | |
d7bc7a98 | 1026 | |
af0d16cd NB |
1027 | if (head) |
1028 | pfile->next_include_file = &head->next; | |
1029 | else | |
d7bc7a98 | 1030 | { |
af0d16cd NB |
1031 | /* All done; restore the line map from <command line>. */ |
1032 | _cpp_do_file_change (pfile, LC_RENAME, | |
1033 | pfile->line_maps.maps[0].to_file, 1, 0); | |
1034 | /* Don't come back here again. */ | |
1035 | pfile->next_include_file = NULL; | |
d7bc7a98 NB |
1036 | } |
1037 | } | |
6de1e2a9 ZW |
1038 | } |
1039 | ||
2f638f96 | 1040 | /* Use mkdeps.c to output dependency information. */ |
7ca3d2b1 NB |
1041 | static void |
1042 | output_deps (pfile) | |
1043 | cpp_reader *pfile; | |
1044 | { | |
1045 | /* Stream on which to print the dependency information. */ | |
1046 | FILE *deps_stream = 0; | |
27c38fbe KG |
1047 | const char *const deps_mode = |
1048 | CPP_OPTION (pfile, print_deps_append) ? "a" : "w"; | |
7ca3d2b1 | 1049 | |
56cd5b95 | 1050 | if (CPP_OPTION (pfile, deps_file)[0] == '\0') |
7ca3d2b1 NB |
1051 | deps_stream = stdout; |
1052 | else | |
1053 | { | |
1054 | deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode); | |
1055 | if (deps_stream == 0) | |
1056 | { | |
ebef4e8c | 1057 | cpp_errno (pfile, DL_ERROR, CPP_OPTION (pfile, deps_file)); |
7ca3d2b1 NB |
1058 | return; |
1059 | } | |
1060 | } | |
1061 | ||
1062 | deps_write (pfile->deps, deps_stream, 72); | |
1063 | ||
1064 | if (CPP_OPTION (pfile, deps_phony_targets)) | |
1065 | deps_phony_targets (pfile->deps, deps_stream); | |
1066 | ||
1067 | /* Don't close stdout. */ | |
ab8e2228 | 1068 | if (deps_stream != stdout) |
7ca3d2b1 NB |
1069 | { |
1070 | if (ferror (deps_stream) || fclose (deps_stream) != 0) | |
ebef4e8c | 1071 | cpp_error (pfile, DL_FATAL, "I/O error on output"); |
7ca3d2b1 NB |
1072 | } |
1073 | } | |
1074 | ||
6de1e2a9 ZW |
1075 | /* This is called at the end of preprocessing. It pops the |
1076 | last buffer and writes dependency output. It should also | |
1077 | clear macro definitions, such that you could call cpp_start_read | |
4a58aab6 | 1078 | with a new filename to restart processing. */ |
6de1e2a9 | 1079 | void |
93c80368 | 1080 | cpp_finish (pfile) |
6de1e2a9 ZW |
1081 | cpp_reader *pfile; |
1082 | { | |
7364fdd8 NB |
1083 | /* cpplex.c leaves the final buffer on the stack. This it so that |
1084 | it returns an unending stream of CPP_EOFs to the client. If we | |
a1f300c0 | 1085 | popped the buffer, we'd dereference a NULL buffer pointer and |
7364fdd8 NB |
1086 | segfault. It's nice to allow the client to do worry-free excess |
1087 | cpp_get_token calls. */ | |
1088 | while (pfile->buffer) | |
1089 | _cpp_pop_buffer (pfile); | |
c1212d2f | 1090 | |
49e6c08e | 1091 | /* Don't write the deps file if preprocessing has failed. */ |
ae79697b | 1092 | if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0) |
7ca3d2b1 | 1093 | output_deps (pfile); |
3caee4a8 | 1094 | |
d4506961 ZW |
1095 | /* Report on headers that could use multiple include guards. */ |
1096 | if (CPP_OPTION (pfile, print_include_names)) | |
c71f835b | 1097 | _cpp_report_missing_guards (pfile); |
6de1e2a9 ZW |
1098 | } |
1099 | ||
5d8ebbd8 | 1100 | /* Add a directive to be handled later in the initialization phase. */ |
223dca6a | 1101 | static void |
ae79697b ZW |
1102 | new_pending_directive (pend, text, handler) |
1103 | struct cpp_pending *pend; | |
223dca6a | 1104 | const char *text; |
40eac643 | 1105 | cl_directive_handler handler; |
223dca6a RH |
1106 | { |
1107 | struct pending_option *o = (struct pending_option *) | |
1108 | xmalloc (sizeof (struct pending_option)); | |
1109 | ||
7ceb3598 | 1110 | o->arg = text; |
223dca6a | 1111 | o->next = NULL; |
40eac643 | 1112 | o->handler = handler; |
ae79697b | 1113 | APPEND (pend, directive, o); |
223dca6a RH |
1114 | } |
1115 | ||
ae79697b ZW |
1116 | /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string"); |
1117 | I.e. a const string initializer with parens around it. That is | |
1118 | what N_("string") resolves to, so we make no_* be macros instead. */ | |
c725bd79 NB |
1119 | #define no_arg N_("argument missing after %s") |
1120 | #define no_ass N_("assertion missing after %s") | |
1121 | #define no_dir N_("directory name missing after %s") | |
1122 | #define no_fil N_("file name missing after %s") | |
1123 | #define no_mac N_("macro name missing after %s") | |
1124 | #define no_pth N_("path name missing after %s") | |
1125 | #define no_num N_("number missing after %s") | |
1126 | #define no_tgt N_("target missing after %s") | |
ae79697b ZW |
1127 | |
1128 | /* This is the list of all command line options, with the leading | |
1129 | "-" removed. It must be sorted in ASCII collating order. */ | |
1130 | #define COMMAND_LINE_OPTIONS \ | |
ae79697b | 1131 | DEF_OPT("$", 0, OPT_dollar) \ |
ae79697b | 1132 | DEF_OPT("-help", 0, OPT__help) \ |
91606ce2 | 1133 | DEF_OPT("-target-help", 0, OPT_target__help) \ |
ae79697b ZW |
1134 | DEF_OPT("-version", 0, OPT__version) \ |
1135 | DEF_OPT("A", no_ass, OPT_A) \ | |
1136 | DEF_OPT("C", 0, OPT_C) \ | |
477cdac7 | 1137 | DEF_OPT("CC", 0, OPT_CC) \ |
ae79697b ZW |
1138 | DEF_OPT("D", no_mac, OPT_D) \ |
1139 | DEF_OPT("H", 0, OPT_H) \ | |
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 ZW |
1150 | DEF_OPT("P", 0, OPT_P) \ |
1151 | DEF_OPT("U", no_mac, OPT_U) \ | |
1152 | DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \ | |
1153 | DEF_OPT("d", no_arg, OPT_d) \ | |
be768055 | 1154 | DEF_OPT("fno-operator-names", 0, OPT_fno_operator_names) \ |
ae79697b ZW |
1155 | DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \ |
1156 | DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \ | |
1157 | DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \ | |
1158 | DEF_OPT("fshow-column", 0, OPT_fshow_column) \ | |
0fef3fd0 | 1159 | DEF_OPT("fsigned-char", 0, OPT_fsigned_char) \ |
6ab3e7dd | 1160 | DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \ |
0fef3fd0 | 1161 | DEF_OPT("funsigned-char", 0, OPT_funsigned_char) \ |
ae79697b ZW |
1162 | DEF_OPT("h", 0, OPT_h) \ |
1163 | DEF_OPT("idirafter", no_dir, OPT_idirafter) \ | |
1164 | DEF_OPT("imacros", no_fil, OPT_imacros) \ | |
1165 | DEF_OPT("include", no_fil, OPT_include) \ | |
1166 | DEF_OPT("iprefix", no_pth, OPT_iprefix) \ | |
1167 | DEF_OPT("isystem", no_dir, OPT_isystem) \ | |
1168 | DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \ | |
1169 | DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \ | |
1170 | DEF_OPT("lang-asm", 0, OPT_lang_asm) \ | |
1171 | DEF_OPT("lang-c", 0, OPT_lang_c) \ | |
1172 | DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \ | |
1173 | DEF_OPT("lang-c89", 0, OPT_lang_c89) \ | |
ae79697b | 1174 | DEF_OPT("lang-objc", 0, OPT_lang_objc) \ |
ae79697b ZW |
1175 | DEF_OPT("nostdinc", 0, OPT_nostdinc) \ |
1176 | DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \ | |
1177 | DEF_OPT("o", no_fil, OPT_o) \ | |
1178 | DEF_OPT("pedantic", 0, OPT_pedantic) \ | |
1179 | DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \ | |
1180 | DEF_OPT("remap", 0, OPT_remap) \ | |
dd07b884 | 1181 | DEF_OPT("std=c++98", 0, OPT_std_cplusplus98) \ |
ae79697b ZW |
1182 | DEF_OPT("std=c89", 0, OPT_std_c89) \ |
1183 | DEF_OPT("std=c99", 0, OPT_std_c99) \ | |
1184 | DEF_OPT("std=c9x", 0, OPT_std_c9x) \ | |
1185 | DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \ | |
1186 | DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \ | |
1187 | DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \ | |
1188 | DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \ | |
1189 | DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \ | |
1190 | DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \ | |
1191 | DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \ | |
004cb263 | 1192 | DEF_OPT("traditional-cpp", 0, OPT_traditional_cpp) \ |
ae79697b ZW |
1193 | DEF_OPT("trigraphs", 0, OPT_trigraphs) \ |
1194 | DEF_OPT("v", 0, OPT_v) \ | |
f4cdc368 | 1195 | DEF_OPT("version", 0, OPT_version) \ |
ae79697b ZW |
1196 | DEF_OPT("w", 0, OPT_w) |
1197 | ||
1198 | #define DEF_OPT(text, msg, code) code, | |
e23c0ba3 ZW |
1199 | enum opt_code |
1200 | { | |
ae79697b | 1201 | COMMAND_LINE_OPTIONS |
e23c0ba3 ZW |
1202 | N_OPTS |
1203 | }; | |
ae79697b | 1204 | #undef DEF_OPT |
e23c0ba3 ZW |
1205 | |
1206 | struct cl_option | |
1207 | { | |
1208 | const char *opt_text; | |
1209 | const char *msg; | |
1210 | size_t opt_len; | |
1211 | enum opt_code opt_code; | |
1212 | }; | |
1213 | ||
ae79697b | 1214 | #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code }, |
e23c0ba3 ZW |
1215 | #ifdef HOST_EBCDIC |
1216 | static struct cl_option cl_options[] = | |
1217 | #else | |
1218 | static const struct cl_option cl_options[] = | |
1219 | #endif | |
1220 | { | |
ae79697b | 1221 | COMMAND_LINE_OPTIONS |
e23c0ba3 ZW |
1222 | }; |
1223 | #undef DEF_OPT | |
ae79697b | 1224 | #undef COMMAND_LINE_OPTIONS |
e23c0ba3 ZW |
1225 | |
1226 | /* Perform a binary search to find which, if any, option the given | |
1227 | command-line matches. Returns its index in the option array, | |
1228 | negative on failure. Complications arise since some options can be | |
1229 | suffixed with an argument, and multiple complete matches can occur, | |
05e81724 NB |
1230 | e.g. -iwithprefix and -iwithprefixbefore. Moreover, we need to |
1231 | accept options beginning with -W that we do not recognise, but not | |
1232 | to swallow any subsequent command line argument; this is handled as | |
1233 | special cases in cpp_handle_option. */ | |
e23c0ba3 ZW |
1234 | static int |
1235 | parse_option (input) | |
1236 | const char *input; | |
1237 | { | |
1238 | unsigned int md, mn, mx; | |
1239 | size_t opt_len; | |
1240 | int comp; | |
1241 | ||
1242 | mn = 0; | |
1243 | mx = N_OPTS; | |
1244 | ||
1245 | while (mx > mn) | |
1246 | { | |
1247 | md = (mn + mx) / 2; | |
ae79697b | 1248 | |
e23c0ba3 | 1249 | opt_len = cl_options[md].opt_len; |
61d0346d | 1250 | comp = memcmp (input, cl_options[md].opt_text, opt_len); |
ae79697b | 1251 | |
e23c0ba3 ZW |
1252 | if (comp > 0) |
1253 | mn = md + 1; | |
1254 | else if (comp < 0) | |
1255 | mx = md; | |
1256 | else | |
1257 | { | |
1258 | if (input[opt_len] == '\0') | |
1259 | return md; | |
1260 | /* We were passed more text. If the option takes an argument, | |
1261 | we may match a later option or we may have been passed the | |
1262 | argument. The longest possible option match succeeds. | |
1263 | If the option takes no arguments we have not matched and | |
4a58aab6 | 1264 | continue the search (e.g. input="stdc++" match was "stdc"). */ |
e23c0ba3 ZW |
1265 | mn = md + 1; |
1266 | if (cl_options[md].msg) | |
1267 | { | |
1268 | /* Scan forwards. If we get an exact match, return it. | |
1269 | Otherwise, return the longest option-accepting match. | |
4a58aab6 | 1270 | This loops no more than twice with current options. */ |
e23c0ba3 | 1271 | mx = md; |
37b8524c | 1272 | for (; mn < (unsigned int) N_OPTS; mn++) |
e23c0ba3 ZW |
1273 | { |
1274 | opt_len = cl_options[mn].opt_len; | |
61d0346d | 1275 | if (memcmp (input, cl_options[mn].opt_text, opt_len)) |
e23c0ba3 ZW |
1276 | break; |
1277 | if (input[opt_len] == '\0') | |
1278 | return mn; | |
1279 | if (cl_options[mn].msg) | |
1280 | mx = mn; | |
1281 | } | |
1282 | return mx; | |
1283 | } | |
1284 | } | |
1285 | } | |
1286 | ||
1287 | return -1; | |
1288 | } | |
1289 | ||
6de1e2a9 ZW |
1290 | /* Handle one command-line option in (argc, argv). |
1291 | Can be called multiple times, to handle multiple sets of options. | |
ffdeea47 | 1292 | If ignore is non-zero, this will ignore unrecognized -W* options. |
6de1e2a9 | 1293 | Returns number of strings consumed. */ |
2c0accc9 | 1294 | int |
ffdeea47 | 1295 | cpp_handle_option (pfile, argc, argv, ignore) |
6de1e2a9 ZW |
1296 | cpp_reader *pfile; |
1297 | int argc; | |
1298 | char **argv; | |
ffdeea47 | 1299 | int ignore; |
6de1e2a9 | 1300 | { |
6de1e2a9 | 1301 | int i = 0; |
f8f769ea | 1302 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
6de1e2a9 | 1303 | |
373e2177 NB |
1304 | /* Interpret "-" or a non-option as a file name. */ |
1305 | if (argv[i][0] != '-' || argv[i][1] == '\0') | |
0b22d65c | 1306 | { |
373e2177 NB |
1307 | if (CPP_OPTION (pfile, in_fname) == NULL) |
1308 | CPP_OPTION (pfile, in_fname) = argv[i]; | |
1309 | else if (CPP_OPTION (pfile, out_fname) == NULL) | |
ae79697b | 1310 | CPP_OPTION (pfile, out_fname) = argv[i]; |
0b22d65c | 1311 | else |
ebef4e8c NB |
1312 | cpp_error (pfile, DL_FATAL, |
1313 | "too many filenames. Type %s --help for usage info", | |
373e2177 | 1314 | progname); |
0b22d65c ZW |
1315 | } |
1316 | else | |
e23c0ba3 ZW |
1317 | { |
1318 | enum opt_code opt_code; | |
1319 | int opt_index; | |
7ceb3598 | 1320 | const char *arg = 0; |
e23c0ba3 | 1321 | |
4a58aab6 | 1322 | /* Skip over '-'. */ |
e23c0ba3 ZW |
1323 | opt_index = parse_option (&argv[i][1]); |
1324 | if (opt_index < 0) | |
1325 | return i; | |
1326 | ||
1327 | opt_code = cl_options[opt_index].opt_code; | |
1328 | if (cl_options[opt_index].msg) | |
1329 | { | |
1330 | arg = &argv[i][cl_options[opt_index].opt_len + 1]; | |
1331 | ||
5c5d1ea0 | 1332 | /* Yuk. Special case for -W as it must not swallow |
e23c0ba3 | 1333 | up any following argument. If this becomes common, add |
4a58aab6 | 1334 | another field to the cl_options table. */ |
5c5d1ea0 | 1335 | if (arg[0] == '\0' && opt_code != OPT_W) |
e23c0ba3 ZW |
1336 | { |
1337 | arg = argv[++i]; | |
1338 | if (!arg) | |
1339 | { | |
ebef4e8c NB |
1340 | cpp_error (pfile, DL_FATAL, |
1341 | cl_options[opt_index].msg, argv[i - 1]); | |
e23c0ba3 ZW |
1342 | return argc; |
1343 | } | |
1344 | } | |
1345 | } | |
ae79697b | 1346 | |
e23c0ba3 ZW |
1347 | switch (opt_code) |
1348 | { | |
4a58aab6 | 1349 | case N_OPTS: /* Shut GCC up. */ |
e23c0ba3 | 1350 | break; |
be768055 JJ |
1351 | case OPT_fno_operator_names: |
1352 | CPP_OPTION (pfile, operator_names) = 0; | |
1353 | break; | |
e23c0ba3 | 1354 | case OPT_fpreprocessed: |
ae79697b | 1355 | CPP_OPTION (pfile, preprocessed) = 1; |
e23c0ba3 ZW |
1356 | break; |
1357 | case OPT_fno_preprocessed: | |
ae79697b ZW |
1358 | CPP_OPTION (pfile, preprocessed) = 0; |
1359 | break; | |
1360 | case OPT_fshow_column: | |
1361 | CPP_OPTION (pfile, show_column) = 1; | |
1362 | break; | |
1363 | case OPT_fno_show_column: | |
1364 | CPP_OPTION (pfile, show_column) = 0; | |
e23c0ba3 | 1365 | break; |
0fef3fd0 | 1366 | case OPT_fsigned_char: |
44a147ad | 1367 | CPP_OPTION (pfile, unsigned_char) = 0; |
0fef3fd0 NB |
1368 | break; |
1369 | case OPT_funsigned_char: | |
44a147ad | 1370 | CPP_OPTION (pfile, unsigned_char) = 1; |
0fef3fd0 | 1371 | break; |
6ab3e7dd NB |
1372 | case OPT_ftabstop: |
1373 | /* Silently ignore empty string, non-longs and silly values. */ | |
1374 | if (arg[0] != '\0') | |
1375 | { | |
1376 | char *endptr; | |
1377 | long tabstop = strtol (arg, &endptr, 10); | |
1378 | if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100) | |
1379 | CPP_OPTION (pfile, tabstop) = tabstop; | |
1380 | } | |
1381 | break; | |
e23c0ba3 | 1382 | case OPT_w: |
ae79697b | 1383 | CPP_OPTION (pfile, inhibit_warnings) = 1; |
e23c0ba3 | 1384 | break; |
e23c0ba3 ZW |
1385 | case OPT_h: |
1386 | case OPT__help: | |
1387 | print_help (); | |
7e96d768 | 1388 | CPP_OPTION (pfile, help_only) = 1; |
e23c0ba3 | 1389 | break; |
91606ce2 | 1390 | case OPT_target__help: |
f4cdc368 ZW |
1391 | /* Print if any target specific options. cpplib has none, but |
1392 | make sure help_only gets set. */ | |
7e96d768 | 1393 | CPP_OPTION (pfile, help_only) = 1; |
91606ce2 | 1394 | break; |
f4cdc368 ZW |
1395 | |
1396 | /* --version inhibits compilation, -version doesn't. -v means | |
1397 | verbose and -version. Historical reasons, don't ask. */ | |
e23c0ba3 | 1398 | case OPT__version: |
7e96d768 | 1399 | CPP_OPTION (pfile, help_only) = 1; |
cb773845 ZW |
1400 | pfile->print_version = 1; |
1401 | break; | |
f4cdc368 ZW |
1402 | case OPT_v: |
1403 | CPP_OPTION (pfile, verbose) = 1; | |
cb773845 ZW |
1404 | pfile->print_version = 1; |
1405 | break; | |
f4cdc368 | 1406 | case OPT_version: |
cb773845 | 1407 | pfile->print_version = 1; |
e23c0ba3 | 1408 | break; |
f4cdc368 | 1409 | |
e23c0ba3 | 1410 | case OPT_C: |
ae79697b | 1411 | CPP_OPTION (pfile, discard_comments) = 0; |
e23c0ba3 | 1412 | break; |
477cdac7 JT |
1413 | case OPT_CC: |
1414 | CPP_OPTION (pfile, discard_comments) = 0; | |
1415 | CPP_OPTION (pfile, discard_comments_in_macro_exp) = 0; | |
1416 | break; | |
e23c0ba3 | 1417 | case OPT_P: |
ae79697b | 1418 | CPP_OPTION (pfile, no_line_commands) = 1; |
e23c0ba3 | 1419 | break; |
4a58aab6 | 1420 | case OPT_dollar: /* Don't include $ in identifiers. */ |
ae79697b | 1421 | CPP_OPTION (pfile, dollars_in_ident) = 0; |
e23c0ba3 ZW |
1422 | break; |
1423 | case OPT_H: | |
ae79697b | 1424 | CPP_OPTION (pfile, print_include_names) = 1; |
e23c0ba3 ZW |
1425 | break; |
1426 | case OPT_D: | |
f8f769ea | 1427 | new_pending_directive (pend, arg, cpp_define); |
e23c0ba3 ZW |
1428 | break; |
1429 | case OPT_pedantic_errors: | |
ae79697b | 1430 | CPP_OPTION (pfile, pedantic_errors) = 1; |
e23c0ba3 ZW |
1431 | /* fall through */ |
1432 | case OPT_pedantic: | |
ae79697b | 1433 | CPP_OPTION (pfile, pedantic) = 1; |
2784528c | 1434 | CPP_OPTION (pfile, warn_endif_labels) = 1; |
e23c0ba3 | 1435 | break; |
e23c0ba3 | 1436 | case OPT_trigraphs: |
ae79697b | 1437 | CPP_OPTION (pfile, trigraphs) = 1; |
e23c0ba3 | 1438 | break; |
e23c0ba3 | 1439 | case OPT_remap: |
ae79697b | 1440 | CPP_OPTION (pfile, remap) = 1; |
e23c0ba3 | 1441 | break; |
004cb263 NB |
1442 | case OPT_traditional_cpp: |
1443 | CPP_OPTION (pfile, traditional) = 1; | |
1444 | break; | |
e23c0ba3 | 1445 | case OPT_iprefix: |
ae79697b ZW |
1446 | CPP_OPTION (pfile, include_prefix) = arg; |
1447 | CPP_OPTION (pfile, include_prefix_len) = strlen (arg); | |
e23c0ba3 ZW |
1448 | break; |
1449 | case OPT_lang_c: | |
dd07b884 | 1450 | set_lang (pfile, CLK_GNUC89); |
e23c0ba3 | 1451 | break; |
e23c0ba3 | 1452 | case OPT_lang_cplusplus: |
dd07b884 | 1453 | set_lang (pfile, CLK_GNUCXX); |
e23c0ba3 | 1454 | break; |
f8f769ea | 1455 | case OPT_lang_objc: |
bdcae02b | 1456 | CPP_OPTION (pfile, objc) = 1; |
e23c0ba3 | 1457 | break; |
dd07b884 NB |
1458 | case OPT_lang_asm: |
1459 | set_lang (pfile, CLK_ASM); | |
e23c0ba3 | 1460 | break; |
dd07b884 NB |
1461 | case OPT_std_cplusplus98: |
1462 | set_lang (pfile, CLK_CXX98); | |
e23c0ba3 ZW |
1463 | break; |
1464 | case OPT_std_gnu89: | |
dd07b884 | 1465 | set_lang (pfile, CLK_GNUC89); |
e23c0ba3 ZW |
1466 | break; |
1467 | case OPT_std_gnu9x: | |
1468 | case OPT_std_gnu99: | |
dd07b884 | 1469 | set_lang (pfile, CLK_GNUC99); |
e23c0ba3 ZW |
1470 | break; |
1471 | case OPT_std_iso9899_199409: | |
dd07b884 NB |
1472 | set_lang (pfile, CLK_STDC94); |
1473 | break; | |
e23c0ba3 ZW |
1474 | case OPT_std_iso9899_1990: |
1475 | case OPT_std_c89: | |
9b55f29a | 1476 | case OPT_lang_c89: |
dd07b884 | 1477 | set_lang (pfile, CLK_STDC89); |
e23c0ba3 ZW |
1478 | break; |
1479 | case OPT_std_iso9899_199x: | |
1480 | case OPT_std_iso9899_1999: | |
1481 | case OPT_std_c9x: | |
1482 | case OPT_std_c99: | |
dd07b884 NB |
1483 | set_lang (pfile, CLK_STDC99); |
1484 | break; | |
1485 | case OPT_nostdinc: | |
1486 | /* -nostdinc causes no default include directories. | |
1487 | You must specify all include-file directories with -I. */ | |
1488 | CPP_OPTION (pfile, no_standard_includes) = 1; | |
1489 | break; | |
1490 | case OPT_nostdincplusplus: | |
ec5c56db | 1491 | /* -nostdinc++ causes no default C++-specific include directories. */ |
dd07b884 | 1492 | CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1; |
e23c0ba3 ZW |
1493 | break; |
1494 | case OPT_o: | |
373e2177 NB |
1495 | if (CPP_OPTION (pfile, out_fname) == NULL) |
1496 | CPP_OPTION (pfile, out_fname) = arg; | |
1497 | else | |
0b22d65c | 1498 | { |
ebef4e8c | 1499 | cpp_error (pfile, DL_FATAL, "output filename specified twice"); |
e23c0ba3 ZW |
1500 | return argc; |
1501 | } | |
e23c0ba3 ZW |
1502 | break; |
1503 | case OPT_d: | |
1504 | /* Args to -d specify what parts of macros to dump. | |
1505 | Silently ignore unrecognised options; they may | |
4a58aab6 | 1506 | be aimed at the compiler proper. */ |
e23c0ba3 ZW |
1507 | { |
1508 | char c; | |
ae79697b | 1509 | |
e23c0ba3 ZW |
1510 | while ((c = *arg++) != '\0') |
1511 | switch (c) | |
1512 | { | |
1513 | case 'M': | |
ae79697b | 1514 | CPP_OPTION (pfile, dump_macros) = dump_only; |
0b22d65c ZW |
1515 | break; |
1516 | case 'N': | |
ae79697b | 1517 | CPP_OPTION (pfile, dump_macros) = dump_names; |
0b22d65c ZW |
1518 | break; |
1519 | case 'D': | |
ae79697b | 1520 | CPP_OPTION (pfile, dump_macros) = dump_definitions; |
0b22d65c ZW |
1521 | break; |
1522 | case 'I': | |
ae79697b | 1523 | CPP_OPTION (pfile, dump_includes) = 1; |
0b22d65c ZW |
1524 | break; |
1525 | } | |
e23c0ba3 ZW |
1526 | } |
1527 | break; | |
96302433 | 1528 | |
e23c0ba3 | 1529 | case OPT_MG: |
ae79697b | 1530 | CPP_OPTION (pfile, print_deps_missing_files) = 1; |
e23c0ba3 ZW |
1531 | break; |
1532 | case OPT_M: | |
3ddbb8a9 NB |
1533 | /* When doing dependencies with -M or -MM, suppress normal |
1534 | preprocessed output, but still do -dM etc. as software | |
1535 | depends on this. Preprocessed output occurs if -MD, -MMD | |
1536 | or environment var dependency generation is used. */ | |
96302433 | 1537 | CPP_OPTION (pfile, print_deps) = 2; |
3ddbb8a9 | 1538 | CPP_OPTION (pfile, no_output) = 1; |
96302433 | 1539 | break; |
e23c0ba3 | 1540 | case OPT_MM: |
96302433 | 1541 | CPP_OPTION (pfile, print_deps) = 1; |
3ddbb8a9 | 1542 | CPP_OPTION (pfile, no_output) = 1; |
e23c0ba3 | 1543 | break; |
96302433 NB |
1544 | case OPT_MF: |
1545 | CPP_OPTION (pfile, deps_file) = arg; | |
1546 | break; | |
1547 | case OPT_MP: | |
a5a4ce3c NB |
1548 | CPP_OPTION (pfile, deps_phony_targets) = 1; |
1549 | break; | |
f7114e17 | 1550 | case OPT_MQ: |
03b9ab42 | 1551 | case OPT_MT: |
f7114e17 NB |
1552 | /* Add a target. -MQ quotes for Make. */ |
1553 | deps_add_target (pfile->deps, arg, opt_code == OPT_MQ); | |
03b9ab42 NB |
1554 | break; |
1555 | ||
b3124fac NB |
1556 | case OPT_MD: |
1557 | CPP_OPTION (pfile, print_deps) = 2; | |
1558 | CPP_OPTION (pfile, deps_file) = arg; | |
1559 | break; | |
1560 | case OPT_MMD: | |
1561 | CPP_OPTION (pfile, print_deps) = 1; | |
1562 | CPP_OPTION (pfile, deps_file) = arg; | |
1563 | break; | |
1564 | ||
e23c0ba3 | 1565 | case OPT_A: |
e1e97c4f | 1566 | if (arg[0] == '-') |
0b22d65c | 1567 | { |
e1e97c4f NB |
1568 | /* -A with an argument beginning with '-' acts as |
1569 | #unassert on whatever immediately follows the '-'. | |
1570 | If "-" is the whole argument, we eliminate all | |
1571 | predefined macros and assertions, including those | |
1572 | that were specified earlier on the command line. | |
1573 | That way we can get rid of any that were passed | |
1574 | automatically in from GCC. */ | |
1575 | ||
1576 | if (arg[1] == '\0') | |
0b22d65c | 1577 | { |
29401c30 | 1578 | free_chain (pend->directive_head); |
e33f6253 NB |
1579 | pend->directive_head = NULL; |
1580 | pend->directive_tail = NULL; | |
0b22d65c | 1581 | } |
e1e97c4f | 1582 | else |
e33f6253 | 1583 | new_pending_directive (pend, arg + 1, cpp_unassert); |
6de1e2a9 | 1584 | } |
e1e97c4f | 1585 | else |
e33f6253 | 1586 | new_pending_directive (pend, arg, cpp_assert); |
e23c0ba3 ZW |
1587 | break; |
1588 | case OPT_U: | |
e33f6253 | 1589 | new_pending_directive (pend, arg, cpp_undef); |
e23c0ba3 ZW |
1590 | break; |
1591 | case OPT_I: /* Add directory to path for includes. */ | |
1592 | if (!strcmp (arg, "-")) | |
1593 | { | |
1594 | /* -I- means: | |
1595 | Use the preceding -I directories for #include "..." | |
1596 | but not #include <...>. | |
1597 | Don't search the directory of the present file | |
1598 | for #include "...". (Note that -I. -I- is not the same as | |
1599 | the default setup; -I. uses the compiler's working dir.) */ | |
ae79697b | 1600 | if (! CPP_OPTION (pfile, ignore_srcdir)) |
e23c0ba3 | 1601 | { |
ae79697b ZW |
1602 | pend->quote_head = pend->brack_head; |
1603 | pend->quote_tail = pend->brack_tail; | |
1604 | pend->brack_head = 0; | |
1605 | pend->brack_tail = 0; | |
1606 | CPP_OPTION (pfile, ignore_srcdir) = 1; | |
e23c0ba3 ZW |
1607 | } |
1608 | else | |
1609 | { | |
ebef4e8c | 1610 | cpp_error (pfile, DL_FATAL, "-I- specified twice"); |
e23c0ba3 ZW |
1611 | return argc; |
1612 | } | |
1613 | } | |
1614 | else | |
e33f6253 | 1615 | append_include_chain (pfile, xstrdup (arg), BRACKET, 0); |
e23c0ba3 ZW |
1616 | break; |
1617 | case OPT_isystem: | |
1618 | /* Add directory to beginning of system include path, as a system | |
4a58aab6 | 1619 | include directory. */ |
e33f6253 | 1620 | append_include_chain (pfile, xstrdup (arg), SYSTEM, 0); |
e23c0ba3 ZW |
1621 | break; |
1622 | case OPT_include: | |
e23c0ba3 ZW |
1623 | case OPT_imacros: |
1624 | { | |
1625 | struct pending_option *o = (struct pending_option *) | |
1626 | xmalloc (sizeof (struct pending_option)); | |
1627 | o->arg = arg; | |
1628 | o->next = NULL; | |
ae79697b | 1629 | |
d7bc7a98 NB |
1630 | if (opt_code == OPT_include) |
1631 | APPEND (pend, include, o); | |
1632 | else | |
1633 | APPEND (pend, imacros, o); | |
e23c0ba3 ZW |
1634 | } |
1635 | break; | |
1636 | case OPT_iwithprefix: | |
1637 | /* Add directory to end of path for includes, | |
1638 | with the default prefix at the front of its name. */ | |
1639 | /* fall through */ | |
1640 | case OPT_iwithprefixbefore: | |
1641 | /* Add directory to main path for includes, | |
1642 | with the default prefix at the front of its name. */ | |
1643 | { | |
1644 | char *fname; | |
1645 | int len; | |
ae79697b | 1646 | |
e23c0ba3 | 1647 | len = strlen (arg); |
ae79697b ZW |
1648 | |
1649 | if (CPP_OPTION (pfile, include_prefix) != 0) | |
e23c0ba3 | 1650 | { |
ae79697b ZW |
1651 | size_t ipl = CPP_OPTION (pfile, include_prefix_len); |
1652 | fname = xmalloc (ipl + len + 1); | |
1653 | memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl); | |
1654 | memcpy (fname + ipl, arg, len + 1); | |
e23c0ba3 | 1655 | } |
60893f43 | 1656 | else if (cpp_GCC_INCLUDE_DIR_len) |
e23c0ba3 | 1657 | { |
60893f43 ZW |
1658 | fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1); |
1659 | memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len); | |
1660 | memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1); | |
e23c0ba3 | 1661 | } |
60893f43 ZW |
1662 | else |
1663 | fname = xstrdup (arg); | |
ae79697b | 1664 | |
e33f6253 | 1665 | append_include_chain (pfile, fname, |
e23c0ba3 ZW |
1666 | opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0); |
1667 | } | |
1668 | break; | |
1669 | case OPT_idirafter: | |
1670 | /* Add directory to end of path for includes. */ | |
e33f6253 | 1671 | append_include_chain (pfile, xstrdup (arg), AFTER, 0); |
e23c0ba3 ZW |
1672 | break; |
1673 | case OPT_W: | |
4a58aab6 | 1674 | /* Silently ignore unrecognised options. */ |
e23c0ba3 | 1675 | if (!strcmp (argv[i], "-Wall")) |
0b22d65c | 1676 | { |
ae79697b ZW |
1677 | CPP_OPTION (pfile, warn_trigraphs) = 1; |
1678 | CPP_OPTION (pfile, warn_comments) = 1; | |
0b22d65c | 1679 | } |
e23c0ba3 | 1680 | else if (!strcmp (argv[i], "-Wtraditional")) |
07aa0b04 | 1681 | CPP_OPTION (pfile, warn_traditional) = 1; |
e23c0ba3 | 1682 | else if (!strcmp (argv[i], "-Wtrigraphs")) |
ae79697b | 1683 | CPP_OPTION (pfile, warn_trigraphs) = 1; |
e23c0ba3 | 1684 | else if (!strcmp (argv[i], "-Wcomment")) |
ae79697b | 1685 | CPP_OPTION (pfile, warn_comments) = 1; |
e23c0ba3 | 1686 | else if (!strcmp (argv[i], "-Wcomments")) |
ae79697b | 1687 | CPP_OPTION (pfile, warn_comments) = 1; |
e23c0ba3 | 1688 | else if (!strcmp (argv[i], "-Wundef")) |
ae79697b | 1689 | CPP_OPTION (pfile, warn_undef) = 1; |
e23c0ba3 | 1690 | else if (!strcmp (argv[i], "-Wimport")) |
ae79697b | 1691 | CPP_OPTION (pfile, warn_import) = 1; |
e23c0ba3 | 1692 | else if (!strcmp (argv[i], "-Werror")) |
ae79697b | 1693 | CPP_OPTION (pfile, warnings_are_errors) = 1; |
317639a8 BC |
1694 | else if (!strcmp (argv[i], "-Wsystem-headers")) |
1695 | CPP_OPTION (pfile, warn_system_headers) = 1; | |
909de5da PE |
1696 | else if (!strcmp (argv[i], "-Wendif-labels")) |
1697 | CPP_OPTION (pfile, warn_endif_labels) = 1; | |
e23c0ba3 | 1698 | else if (!strcmp (argv[i], "-Wno-traditional")) |
07aa0b04 | 1699 | CPP_OPTION (pfile, warn_traditional) = 0; |
e23c0ba3 | 1700 | else if (!strcmp (argv[i], "-Wno-trigraphs")) |
ae79697b | 1701 | CPP_OPTION (pfile, warn_trigraphs) = 0; |
e23c0ba3 | 1702 | else if (!strcmp (argv[i], "-Wno-comment")) |
ae79697b | 1703 | CPP_OPTION (pfile, warn_comments) = 0; |
e23c0ba3 | 1704 | else if (!strcmp (argv[i], "-Wno-comments")) |
ae79697b | 1705 | CPP_OPTION (pfile, warn_comments) = 0; |
e23c0ba3 | 1706 | else if (!strcmp (argv[i], "-Wno-undef")) |
ae79697b | 1707 | CPP_OPTION (pfile, warn_undef) = 0; |
e23c0ba3 | 1708 | else if (!strcmp (argv[i], "-Wno-import")) |
ae79697b | 1709 | CPP_OPTION (pfile, warn_import) = 0; |
e23c0ba3 | 1710 | else if (!strcmp (argv[i], "-Wno-error")) |
ae79697b | 1711 | CPP_OPTION (pfile, warnings_are_errors) = 0; |
317639a8 BC |
1712 | else if (!strcmp (argv[i], "-Wno-system-headers")) |
1713 | CPP_OPTION (pfile, warn_system_headers) = 0; | |
909de5da PE |
1714 | else if (!strcmp (argv[i], "-Wno-endif-labels")) |
1715 | CPP_OPTION (pfile, warn_endif_labels) = 0; | |
ffdeea47 JJ |
1716 | else if (! ignore) |
1717 | return i; | |
e23c0ba3 ZW |
1718 | break; |
1719 | } | |
1720 | } | |
6de1e2a9 | 1721 | return i + 1; |
e23c0ba3 | 1722 | } |
0b22d65c | 1723 | |
6de1e2a9 ZW |
1724 | /* Handle command-line options in (argc, argv). |
1725 | Can be called multiple times, to handle multiple sets of options. | |
1726 | Returns if an unrecognized option is seen. | |
1727 | Returns number of strings consumed. */ | |
6de1e2a9 ZW |
1728 | int |
1729 | cpp_handle_options (pfile, argc, argv) | |
1730 | cpp_reader *pfile; | |
1731 | int argc; | |
1732 | char **argv; | |
1733 | { | |
1734 | int i; | |
1735 | int strings_processed; | |
e23c0ba3 | 1736 | |
6de1e2a9 ZW |
1737 | for (i = 0; i < argc; i += strings_processed) |
1738 | { | |
ffdeea47 | 1739 | strings_processed = cpp_handle_option (pfile, argc - i, argv + i, 1); |
6de1e2a9 ZW |
1740 | if (strings_processed == 0) |
1741 | break; | |
1742 | } | |
96302433 | 1743 | |
6de1e2a9 ZW |
1744 | return i; |
1745 | } | |
1746 | ||
96302433 NB |
1747 | /* Extra processing when all options are parsed, after all calls to |
1748 | cpp_handle_option[s]. Consistency checks etc. */ | |
1749 | void | |
1750 | cpp_post_options (pfile) | |
1751 | cpp_reader *pfile; | |
1752 | { | |
cb773845 ZW |
1753 | if (pfile->print_version) |
1754 | { | |
1755 | fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string); | |
1756 | #ifdef TARGET_VERSION | |
1757 | TARGET_VERSION; | |
1758 | #endif | |
1759 | fputc ('\n', stderr); | |
1760 | } | |
1761 | ||
373e2177 NB |
1762 | /* Canonicalize in_fname and out_fname. We guarantee they are not |
1763 | NULL, and that the empty string represents stdin / stdout. */ | |
1764 | if (CPP_OPTION (pfile, in_fname) == NULL | |
1765 | || !strcmp (CPP_OPTION (pfile, in_fname), "-")) | |
1766 | CPP_OPTION (pfile, in_fname) = ""; | |
1767 | ||
1768 | if (CPP_OPTION (pfile, out_fname) == NULL | |
1769 | || !strcmp (CPP_OPTION (pfile, out_fname), "-")) | |
1770 | CPP_OPTION (pfile, out_fname) = ""; | |
1771 | ||
96302433 NB |
1772 | /* -Wtraditional is not useful in C++ mode. */ |
1773 | if (CPP_OPTION (pfile, cplusplus)) | |
1774 | CPP_OPTION (pfile, warn_traditional) = 0; | |
1775 | ||
6d4587f7 ZW |
1776 | /* Permanently disable macro expansion if we are rescanning |
1777 | preprocessed text. */ | |
1778 | if (CPP_OPTION (pfile, preprocessed)) | |
1779 | pfile->state.prevent_expansion = 1; | |
1780 | ||
1651cc96 JJ |
1781 | /* -dM makes no normal output. This is set here so that -dM -dD |
1782 | works as expected. */ | |
1783 | if (CPP_OPTION (pfile, dump_macros) == dump_only) | |
1784 | CPP_OPTION (pfile, no_output) = 1; | |
1785 | ||
1786 | /* Disable -dD, -dN and -dI if we should make no normal output | |
1787 | (such as with -M). Allow -M -dM since some software relies on | |
1788 | this. */ | |
1789 | if (CPP_OPTION (pfile, no_output)) | |
1790 | { | |
1791 | if (CPP_OPTION (pfile, dump_macros) != dump_only) | |
1792 | CPP_OPTION (pfile, dump_macros) = dump_none; | |
1793 | CPP_OPTION (pfile, dump_includes) = 0; | |
1794 | } | |
1795 | ||
96302433 NB |
1796 | /* We need to do this after option processing and before |
1797 | cpp_start_read, as cppmain.c relies on the options->no_output to | |
1798 | set its callbacks correctly before calling cpp_start_read. */ | |
1799 | init_dependency_output (pfile); | |
1800 | ||
e582248c NB |
1801 | /* After checking the environment variables, check if -M or -MM has |
1802 | not been specified, but other -M options have. */ | |
1803 | if (CPP_OPTION (pfile, print_deps) == 0 && | |
1804 | (CPP_OPTION (pfile, print_deps_missing_files) | |
1805 | || CPP_OPTION (pfile, deps_file) | |
1806 | || CPP_OPTION (pfile, deps_phony_targets))) | |
ebef4e8c NB |
1807 | cpp_error (pfile, DL_FATAL, |
1808 | "you must additionally specify either -M or -MM"); | |
96302433 NB |
1809 | } |
1810 | ||
56cd5b95 NB |
1811 | /* Set up dependency-file output. On exit, if print_deps is non-zero |
1812 | then deps_file is not NULL; stdout is the empty string. */ | |
7ca3d2b1 NB |
1813 | static void |
1814 | init_dependency_output (pfile) | |
1815 | cpp_reader *pfile; | |
1816 | { | |
1817 | char *spec, *s, *output_file; | |
1818 | ||
1819 | /* Either of two environment variables can specify output of deps. | |
1820 | Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET", | |
1821 | where OUTPUT_FILE is the file to write deps info to | |
1822 | and DEPS_TARGET is the target to mention in the deps. */ | |
1823 | ||
1824 | if (CPP_OPTION (pfile, print_deps) == 0) | |
1825 | { | |
1826 | spec = getenv ("DEPENDENCIES_OUTPUT"); | |
1827 | if (spec) | |
1828 | CPP_OPTION (pfile, print_deps) = 1; | |
1829 | else | |
1830 | { | |
1831 | spec = getenv ("SUNPRO_DEPENDENCIES"); | |
1832 | if (spec) | |
1833 | CPP_OPTION (pfile, print_deps) = 2; | |
1834 | else | |
1835 | return; | |
1836 | } | |
1837 | ||
1838 | /* Find the space before the DEPS_TARGET, if there is one. */ | |
1839 | s = strchr (spec, ' '); | |
1840 | if (s) | |
1841 | { | |
1842 | /* Let the caller perform MAKE quoting. */ | |
1843 | deps_add_target (pfile->deps, s + 1, 0); | |
1844 | output_file = (char *) xmalloc (s - spec + 1); | |
1845 | memcpy (output_file, spec, s - spec); | |
1846 | output_file[s - spec] = 0; | |
1847 | } | |
1848 | else | |
1849 | output_file = spec; | |
1850 | ||
ab8e2228 NB |
1851 | /* Command line -MF overrides environment variables and default. */ |
1852 | if (CPP_OPTION (pfile, deps_file) == 0) | |
1853 | CPP_OPTION (pfile, deps_file) = output_file; | |
1854 | ||
7ca3d2b1 NB |
1855 | CPP_OPTION (pfile, print_deps_append) = 1; |
1856 | } | |
ab8e2228 | 1857 | else if (CPP_OPTION (pfile, deps_file) == 0) |
32810ba3 NB |
1858 | /* If -M or -MM was seen without -MF, default output to wherever |
1859 | was specified with -o. out_fname is non-NULL here. */ | |
ab8e2228 | 1860 | CPP_OPTION (pfile, deps_file) = CPP_OPTION (pfile, out_fname); |
7ca3d2b1 NB |
1861 | } |
1862 | ||
5d8ebbd8 | 1863 | /* Handle --help output. */ |
6de1e2a9 ZW |
1864 | static void |
1865 | print_help () | |
1866 | { | |
aaaf7848 | 1867 | /* To keep the lines from getting too long for some compilers, limit |
ec5c56db | 1868 | to about 500 characters (6 lines) per chunk. */ |
6de1e2a9 ZW |
1869 | fputs (_("\ |
1870 | Switches:\n\ | |
1871 | -include <file> Include the contents of <file> before other files\n\ | |
1872 | -imacros <file> Accept definition of macros in <file>\n\ | |
1873 | -iprefix <path> Specify <path> as a prefix for next two options\n\ | |
1874 | -iwithprefix <dir> Add <dir> to the end of the system include path\n\ | |
1875 | -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\ | |
1876 | -isystem <dir> Add <dir> to the start of the system include path\n\ | |
aaaf7848 DT |
1877 | "), stdout); |
1878 | fputs (_("\ | |
6de1e2a9 ZW |
1879 | -idirafter <dir> Add <dir> to the end of the system include path\n\ |
1880 | -I <dir> Add <dir> to the end of the main include path\n\ | |
e23c0ba3 | 1881 | -I- Fine-grained include path control; see info docs\n\ |
6de1e2a9 ZW |
1882 | -nostdinc Do not search system include directories\n\ |
1883 | (dirs specified with -isystem will still be used)\n\ | |
1884 | -nostdinc++ Do not search system include directories for C++\n\ | |
1885 | -o <file> Put output into <file>\n\ | |
aaaf7848 DT |
1886 | "), stdout); |
1887 | fputs (_("\ | |
041c3194 | 1888 | -pedantic Issue all warnings demanded by strict ISO C\n\ |
e23c0ba3 | 1889 | -pedantic-errors Issue -pedantic warnings as errors instead\n\ |
041c3194 | 1890 | -trigraphs Support ISO C trigraphs\n\ |
6de1e2a9 ZW |
1891 | -lang-c Assume that the input sources are in C\n\ |
1892 | -lang-c89 Assume that the input sources are in C89\n\ | |
aaaf7848 DT |
1893 | "), stdout); |
1894 | fputs (_("\ | |
f9a0e96c | 1895 | -lang-c++ Assume that the input sources are in C++\n\ |
6de1e2a9 | 1896 | -lang-objc Assume that the input sources are in ObjectiveC\n\ |
6de1e2a9 | 1897 | -lang-asm Assume that the input sources are in assembler\n\ |
aaaf7848 DT |
1898 | "), stdout); |
1899 | fputs (_("\ | |
6de1e2a9 | 1900 | -std=<std name> Specify the conformance standard; one of:\n\ |
916269ab UD |
1901 | gnu89, gnu99, c89, c99, iso9899:1990,\n\ |
1902 | iso9899:199409, iso9899:1999\n\ | |
6de1e2a9 ZW |
1903 | -w Inhibit warning messages\n\ |
1904 | -Wtrigraphs Warn if trigraphs are encountered\n\ | |
1905 | -Wno-trigraphs Do not warn about trigraphs\n\ | |
1906 | -Wcomment{s} Warn if one comment starts inside another\n\ | |
aaaf7848 DT |
1907 | "), stdout); |
1908 | fputs (_("\ | |
6de1e2a9 | 1909 | -Wno-comment{s} Do not warn about comments\n\ |
f9a0e96c ZW |
1910 | -Wtraditional Warn about features not present in traditional C\n\ |
1911 | -Wno-traditional Do not warn about traditional C\n\ | |
6de1e2a9 ZW |
1912 | -Wundef Warn if an undefined macro is used by #if\n\ |
1913 | -Wno-undef Do not warn about testing undefined macros\n\ | |
1914 | -Wimport Warn about the use of the #import directive\n\ | |
aaaf7848 DT |
1915 | "), stdout); |
1916 | fputs (_("\ | |
6de1e2a9 ZW |
1917 | -Wno-import Do not warn about the use of #import\n\ |
1918 | -Werror Treat all warnings as errors\n\ | |
1919 | -Wno-error Do not treat warnings as errors\n\ | |
317639a8 BC |
1920 | -Wsystem-headers Do not suppress warnings from system headers\n\ |
1921 | -Wno-system-headers Suppress warnings from system headers\n\ | |
6de1e2a9 | 1922 | -Wall Enable all preprocessor warnings\n\ |
aaaf7848 DT |
1923 | "), stdout); |
1924 | fputs (_("\ | |
317639a8 BC |
1925 | -M Generate make dependencies\n\ |
1926 | -MM As -M, but ignore system header files\n\ | |
576786b0 NB |
1927 | -MD Generate make dependencies and compile\n\ |
1928 | -MMD As -MD, but ignore system header files\n\ | |
96302433 | 1929 | -MF <file> Write dependency output to the given file\n\ |
6de1e2a9 | 1930 | -MG Treat missing header file as generated files\n\ |
96302433 NB |
1931 | "), stdout); |
1932 | fputs (_("\ | |
1933 | -MP Generate phony targets for all headers\n\ | |
1934 | -MQ <target> Add a MAKE-quoted target\n\ | |
1935 | -MT <target> Add an unquoted target\n\ | |
aaaf7848 DT |
1936 | "), stdout); |
1937 | fputs (_("\ | |
317639a8 BC |
1938 | -D<macro> Define a <macro> with string '1' as its value\n\ |
1939 | -D<macro>=<val> Define a <macro> with <val> as its value\n\ | |
576786b0 NB |
1940 | -A<question>=<answer> Assert the <answer> to <question>\n\ |
1941 | -A-<question>=<answer> Disable the <answer> to <question>\n\ | |
6de1e2a9 | 1942 | -U<macro> Undefine <macro> \n\ |
6de1e2a9 | 1943 | -v Display the version number\n\ |
aaaf7848 DT |
1944 | "), stdout); |
1945 | fputs (_("\ | |
317639a8 BC |
1946 | -H Print the name of header files as they are used\n\ |
1947 | -C Do not discard comments\n\ | |
6de1e2a9 ZW |
1948 | -dM Display a list of macro definitions active at end\n\ |
1949 | -dD Preserve macro definitions in output\n\ | |
1950 | -dN As -dD except that only the names are preserved\n\ | |
1951 | -dI Include #include directives in the output\n\ | |
317639a8 BC |
1952 | "), stdout); |
1953 | fputs (_("\ | |
3bce8a01 | 1954 | -fpreprocessed Treat the input file as already preprocessed\n\ |
6ab3e7dd | 1955 | -ftabstop=<number> Distance between tab stops for column reporting\n\ |
6de1e2a9 ZW |
1956 | -P Do not generate #line directives\n\ |
1957 | -$ Do not allow '$' in identifiers\n\ | |
576786b0 | 1958 | -remap Remap file names when including files\n\ |
e23c0ba3 | 1959 | --version Display version information\n\ |
6de1e2a9 ZW |
1960 | -h or --help Display this information\n\ |
1961 | "), stdout); | |
1962 | } |