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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 *)); |
17645b15 | 101 | static void mark_named_operators PARAMS ((cpp_reader *)); |
0b22d65c | 102 | static void append_include_chain PARAMS ((cpp_reader *, |
c45da1ca | 103 | char *, int, int)); |
002ee64f | 104 | static struct search_path * remove_dup_dir PARAMS ((cpp_reader *, |
591e15a1 | 105 | struct search_path *)); |
002ee64f | 106 | static struct search_path * remove_dup_dirs PARAMS ((cpp_reader *, |
591e15a1 | 107 | struct search_path *)); |
ae79697b | 108 | static void merge_include_chains PARAMS ((cpp_reader *)); |
d7bc7a98 NB |
109 | static bool push_include PARAMS ((cpp_reader *, |
110 | struct pending_option *)); | |
111 | static void free_chain PARAMS ((struct pending_option *)); | |
dd07b884 | 112 | static void set_lang PARAMS ((cpp_reader *, enum c_lang)); |
7ca3d2b1 NB |
113 | static void init_dependency_output PARAMS ((cpp_reader *)); |
114 | static void init_standard_includes PARAMS ((cpp_reader *)); | |
f5e99456 | 115 | static void read_original_filename PARAMS ((cpp_reader *)); |
2c0accc9 | 116 | static void new_pending_directive PARAMS ((struct cpp_pending *, |
40eac643 NB |
117 | const char *, |
118 | cl_directive_handler)); | |
7ca3d2b1 | 119 | static void output_deps PARAMS ((cpp_reader *)); |
e23c0ba3 | 120 | static int parse_option PARAMS ((const char *)); |
6de1e2a9 | 121 | |
cb773845 ZW |
122 | /* Fourth argument to append_include_chain: chain to use. |
123 | Note it's never asked to append to the quote chain. */ | |
124 | enum { BRACKET = 0, SYSTEM, AFTER }; | |
6de1e2a9 | 125 | |
61d0346d NB |
126 | /* If we have designated initializers (GCC >2.7) these tables can be |
127 | initialized, constant data. Otherwise, they have to be filled in at | |
12cf91fe | 128 | runtime. */ |
61d0346d | 129 | #if HAVE_DESIGNATED_INITIALIZERS |
a9ae4483 | 130 | |
4a58aab6 | 131 | #define init_trigraph_map() /* Nothing. */ |
61d0346d | 132 | #define TRIGRAPH_MAP \ |
562a5c27 | 133 | __extension__ const uchar _cpp_trigraph_map[UCHAR_MAX + 1] = { |
61d0346d | 134 | |
a9ae4483 | 135 | #define END }; |
455d2586 | 136 | #define s(p, v) [p] = v, |
61d0346d | 137 | |
a9ae4483 | 138 | #else |
61d0346d | 139 | |
562a5c27 | 140 | #define TRIGRAPH_MAP uchar _cpp_trigraph_map[UCHAR_MAX + 1] = { 0 }; \ |
61d0346d NB |
141 | static void init_trigraph_map PARAMS ((void)) { \ |
142 | unsigned char *x = _cpp_trigraph_map; | |
143 | ||
ae79697b | 144 | #define END } |
455d2586 | 145 | #define s(p, v) x[p] = v; |
61d0346d | 146 | |
a9ae4483 | 147 | #endif |
6de1e2a9 | 148 | |
61d0346d NB |
149 | TRIGRAPH_MAP |
150 | s('=', '#') s(')', ']') s('!', '|') | |
151 | s('(', '[') s('\'', '^') s('>', '}') | |
152 | s('/', '\\') s('<', '{') s('-', '~') | |
153 | END | |
154 | ||
a9ae4483 | 155 | #undef s |
455d2586 | 156 | #undef END |
61d0346d | 157 | #undef TRIGRAPH_MAP |
6de1e2a9 ZW |
158 | |
159 | /* Given a colon-separated list of file names PATH, | |
160 | add all the names to the search path for include files. */ | |
6de1e2a9 | 161 | static void |
e33f6253 | 162 | path_include (pfile, list, path) |
6de1e2a9 | 163 | cpp_reader *pfile; |
0b22d65c ZW |
164 | char *list; |
165 | int path; | |
6de1e2a9 | 166 | { |
0b22d65c | 167 | char *p, *q, *name; |
6de1e2a9 | 168 | |
0b22d65c | 169 | p = list; |
6de1e2a9 | 170 | |
0b22d65c ZW |
171 | do |
172 | { | |
6de1e2a9 | 173 | /* Find the end of this name. */ |
0b22d65c | 174 | q = p; |
6de1e2a9 | 175 | while (*q != 0 && *q != PATH_SEPARATOR) q++; |
0b22d65c ZW |
176 | if (q == p) |
177 | { | |
178 | /* An empty name in the path stands for the current directory. */ | |
179 | name = (char *) xmalloc (2); | |
180 | name[0] = '.'; | |
181 | name[1] = 0; | |
182 | } | |
183 | else | |
184 | { | |
185 | /* Otherwise use the directory that is named. */ | |
186 | name = (char *) xmalloc (q - p + 1); | |
187 | memcpy (name, p, q - p); | |
188 | name[q - p] = 0; | |
189 | } | |
6de1e2a9 | 190 | |
e33f6253 | 191 | append_include_chain (pfile, name, path, 0); |
6de1e2a9 ZW |
192 | |
193 | /* Advance past this name. */ | |
0b22d65c | 194 | if (*q == 0) |
6de1e2a9 | 195 | break; |
0b22d65c ZW |
196 | p = q + 1; |
197 | } | |
198 | while (1); | |
199 | } | |
200 | ||
bef985f3 | 201 | /* Append DIR to include path PATH. DIR must be allocated on the |
5d8ebbd8 NB |
202 | heap; this routine takes responsibility for freeing it. CXX_AWARE |
203 | is non-zero if the header contains extern "C" guards for C++, | |
204 | otherwise it is zero. */ | |
0b22d65c | 205 | static void |
e33f6253 | 206 | append_include_chain (pfile, dir, path, cxx_aware) |
0b22d65c | 207 | cpp_reader *pfile; |
0b22d65c ZW |
208 | char *dir; |
209 | int path; | |
39e5db1a | 210 | int cxx_aware; |
0b22d65c | 211 | { |
e33f6253 | 212 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
591e15a1 | 213 | struct search_path *new; |
0b22d65c ZW |
214 | struct stat st; |
215 | unsigned int len; | |
216 | ||
f9200da2 | 217 | if (*dir == '\0') |
bef985f3 NB |
218 | { |
219 | free (dir); | |
220 | dir = xstrdup ("."); | |
221 | } | |
b0699dad | 222 | _cpp_simplify_pathname (dir); |
bef985f3 | 223 | |
0b22d65c ZW |
224 | if (stat (dir, &st)) |
225 | { | |
f9200da2 | 226 | /* Dirs that don't exist are silently ignored. */ |
0b22d65c | 227 | if (errno != ENOENT) |
ebef4e8c | 228 | cpp_errno (pfile, DL_ERROR, dir); |
ae79697b | 229 | else if (CPP_OPTION (pfile, verbose)) |
041c3194 | 230 | fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir); |
bef985f3 | 231 | free (dir); |
0b22d65c ZW |
232 | return; |
233 | } | |
234 | ||
235 | if (!S_ISDIR (st.st_mode)) | |
236 | { | |
ebef4e8c | 237 | cpp_error_with_line (pfile, DL_ERROR, 0, 0, "%s: Not a directory", dir); |
bef985f3 | 238 | free (dir); |
0b22d65c ZW |
239 | return; |
240 | } | |
241 | ||
242 | len = strlen (dir); | |
243 | if (len > pfile->max_include_len) | |
244 | pfile->max_include_len = len; | |
ae79697b | 245 | |
591e15a1 | 246 | new = (struct search_path *) xmalloc (sizeof (struct search_path)); |
0b22d65c | 247 | new->name = dir; |
591e15a1 | 248 | new->len = len; |
ca47c89e | 249 | INO_T_COPY (new->ino, st.st_ino); |
0b22d65c | 250 | new->dev = st.st_dev; |
4737b274 CF |
251 | /* Both systm and after include file lists should be treated as system |
252 | include files since these two lists are really just a concatenation | |
ec5c56db | 253 | of one "system" list. */ |
4737b274 | 254 | if (path == SYSTEM || path == AFTER) |
c45da1ca ZW |
255 | new->sysp = cxx_aware ? 1 : 2; |
256 | else | |
257 | new->sysp = 0; | |
0b22d65c | 258 | new->name_map = NULL; |
503cb436 | 259 | new->next = NULL; |
0b22d65c ZW |
260 | |
261 | switch (path) | |
262 | { | |
0b22d65c ZW |
263 | case BRACKET: APPEND (pend, brack, new); break; |
264 | case SYSTEM: APPEND (pend, systm, new); break; | |
265 | case AFTER: APPEND (pend, after, new); break; | |
6de1e2a9 ZW |
266 | } |
267 | } | |
268 | ||
dd69c71b NB |
269 | /* Handle a duplicated include path. PREV is the link in the chain |
270 | before the duplicate. The duplicate is removed from the chain and | |
271 | freed. Returns PREV. */ | |
002ee64f | 272 | static struct search_path * |
dd69c71b NB |
273 | remove_dup_dir (pfile, prev) |
274 | cpp_reader *pfile; | |
591e15a1 | 275 | struct search_path *prev; |
dd69c71b | 276 | { |
591e15a1 | 277 | struct search_path *cur = prev->next; |
dd69c71b NB |
278 | |
279 | if (CPP_OPTION (pfile, verbose)) | |
280 | fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name); | |
281 | ||
282 | prev->next = cur->next; | |
591e15a1 | 283 | free ((PTR) cur->name); |
dd69c71b NB |
284 | free (cur); |
285 | ||
286 | return prev; | |
287 | } | |
288 | ||
289 | /* Remove duplicate directories from a chain. Returns the tail of the | |
290 | chain, or NULL if the chain is empty. This algorithm is quadratic | |
291 | in the number of -I switches, which is acceptable since there | |
292 | aren't usually that many of them. */ | |
002ee64f | 293 | static struct search_path * |
dd69c71b NB |
294 | remove_dup_dirs (pfile, head) |
295 | cpp_reader *pfile; | |
591e15a1 | 296 | struct search_path *head; |
dd69c71b | 297 | { |
591e15a1 | 298 | struct search_path *prev = NULL, *cur, *other; |
dd69c71b NB |
299 | |
300 | for (cur = head; cur; cur = cur->next) | |
301 | { | |
302 | for (other = head; other != cur; other = other->next) | |
df383483 | 303 | if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev) |
dd69c71b | 304 | { |
002ee64f | 305 | if (cur->sysp && !other->sysp) |
dbead49c | 306 | { |
ebef4e8c NB |
307 | cpp_error (pfile, DL_WARNING, |
308 | "changing search order for system directory \"%s\"", | |
309 | cur->name); | |
dbead49c | 310 | if (strcmp (cur->name, other->name)) |
ebef4e8c NB |
311 | cpp_error (pfile, DL_WARNING, |
312 | " as it is the same as non-system directory \"%s\"", | |
313 | other->name); | |
dbead49c | 314 | else |
ebef4e8c NB |
315 | cpp_error (pfile, DL_WARNING, |
316 | " as it has already been specified as a non-system directory"); | |
dbead49c | 317 | } |
dd69c71b NB |
318 | cur = remove_dup_dir (pfile, prev); |
319 | break; | |
320 | } | |
321 | prev = cur; | |
322 | } | |
323 | ||
324 | return prev; | |
325 | } | |
326 | ||
88ae23e7 ZW |
327 | /* Merge the four include chains together in the order quote, bracket, |
328 | system, after. Remove duplicate dirs (as determined by | |
329 | INO_T_EQ()). The system_include and after_include chains are never | |
330 | referred to again after this function; all access is through the | |
5d8ebbd8 | 331 | bracket_include path. */ |
88ae23e7 | 332 | static void |
ae79697b ZW |
333 | merge_include_chains (pfile) |
334 | cpp_reader *pfile; | |
88ae23e7 | 335 | { |
591e15a1 | 336 | struct search_path *quote, *brack, *systm, *qtail; |
88ae23e7 | 337 | |
ae79697b | 338 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
88ae23e7 | 339 | |
ae79697b ZW |
340 | quote = pend->quote_head; |
341 | brack = pend->brack_head; | |
342 | systm = pend->systm_head; | |
dd69c71b | 343 | qtail = pend->quote_tail; |
88ae23e7 | 344 | |
dd69c71b NB |
345 | /* Paste together bracket, system, and after include chains. */ |
346 | if (systm) | |
347 | pend->systm_tail->next = pend->after_head; | |
88ae23e7 | 348 | else |
dd69c71b NB |
349 | systm = pend->after_head; |
350 | ||
351 | if (brack) | |
352 | pend->brack_tail->next = systm; | |
88ae23e7 ZW |
353 | else |
354 | brack = systm; | |
355 | ||
dd69c71b NB |
356 | /* This is a bit tricky. First we drop dupes from the quote-include |
357 | list. Then we drop dupes from the bracket-include list. | |
358 | Finally, if qtail and brack are the same directory, we cut out | |
cb773845 | 359 | brack and move brack up to point to qtail. |
88ae23e7 ZW |
360 | |
361 | We can't just merge the lists and then uniquify them because | |
362 | then we may lose directories from the <> search path that should | |
363 | be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however | |
364 | safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written | |
dd69c71b | 365 | -Ibar -I- -Ifoo -Iquux. */ |
88ae23e7 | 366 | |
dd69c71b NB |
367 | remove_dup_dirs (pfile, brack); |
368 | qtail = remove_dup_dirs (pfile, quote); | |
88ae23e7 ZW |
369 | |
370 | if (quote) | |
371 | { | |
dd69c71b NB |
372 | qtail->next = brack; |
373 | ||
374 | /* If brack == qtail, remove brack as it's simpler. */ | |
afb58288 ZW |
375 | if (brack && INO_T_EQ (qtail->ino, brack->ino) |
376 | && qtail->dev == brack->dev) | |
dd69c71b | 377 | brack = remove_dup_dir (pfile, qtail); |
88ae23e7 ZW |
378 | } |
379 | else | |
bef985f3 | 380 | quote = brack; |
88ae23e7 | 381 | |
ae79697b ZW |
382 | CPP_OPTION (pfile, quote_include) = quote; |
383 | CPP_OPTION (pfile, bracket_include) = brack; | |
88ae23e7 ZW |
384 | } |
385 | ||
5d8ebbd8 NB |
386 | /* A set of booleans indicating what CPP features each source language |
387 | requires. */ | |
a01eb545 ZW |
388 | struct lang_flags |
389 | { | |
390 | char c99; | |
a01eb545 ZW |
391 | char cplusplus; |
392 | char extended_numbers; | |
393 | char trigraphs; | |
394 | char dollars_in_ident; | |
395 | char cplusplus_comments; | |
396 | char digraphs; | |
397 | }; | |
398 | ||
399 | /* ??? Enable $ in identifiers in assembly? */ | |
400 | static const struct lang_flags lang_defaults[] = | |
bdcae02b NB |
401 | { /* c99 c++ xnum trig dollar c++comm digr */ |
402 | /* GNUC89 */ { 0, 0, 1, 0, 1, 1, 1 }, | |
403 | /* GNUC99 */ { 1, 0, 1, 0, 1, 1, 1 }, | |
404 | /* STDC89 */ { 0, 0, 0, 1, 0, 0, 0 }, | |
405 | /* STDC94 */ { 0, 0, 0, 1, 0, 0, 1 }, | |
406 | /* STDC99 */ { 1, 0, 1, 1, 0, 1, 1 }, | |
407 | /* GNUCXX */ { 0, 1, 1, 0, 1, 1, 1 }, | |
408 | /* CXX98 */ { 0, 1, 1, 1, 0, 1, 1 }, | |
409 | /* ASM */ { 0, 0, 1, 0, 0, 1, 0 } | |
a01eb545 ZW |
410 | }; |
411 | ||
5d8ebbd8 | 412 | /* Sets internal flags correctly for a given language. */ |
dd07b884 NB |
413 | static void |
414 | set_lang (pfile, lang) | |
415 | cpp_reader *pfile; | |
416 | enum c_lang lang; | |
417 | { | |
a01eb545 | 418 | const struct lang_flags *l = &lang_defaults[(int) lang]; |
df383483 | 419 | |
bdb05a7b | 420 | CPP_OPTION (pfile, lang) = lang; |
dd07b884 | 421 | |
a01eb545 | 422 | CPP_OPTION (pfile, c99) = l->c99; |
a01eb545 ZW |
423 | CPP_OPTION (pfile, cplusplus) = l->cplusplus; |
424 | CPP_OPTION (pfile, extended_numbers) = l->extended_numbers; | |
425 | CPP_OPTION (pfile, trigraphs) = l->trigraphs; | |
426 | CPP_OPTION (pfile, dollars_in_ident) = l->dollars_in_ident; | |
427 | CPP_OPTION (pfile, cplusplus_comments) = l->cplusplus_comments; | |
428 | CPP_OPTION (pfile, digraphs) = l->digraphs; | |
dd07b884 NB |
429 | } |
430 | ||
7ca3d2b1 NB |
431 | #ifdef HOST_EBCDIC |
432 | static int opt_comp PARAMS ((const void *, const void *)); | |
433 | ||
434 | /* Run-time sorting of options array. */ | |
435 | static int | |
436 | opt_comp (p1, p2) | |
437 | const void *p1, *p2; | |
438 | { | |
439 | return strcmp (((struct cl_option *) p1)->opt_text, | |
440 | ((struct cl_option *) p2)->opt_text); | |
441 | } | |
442 | #endif | |
cf44ea52 | 443 | |
7ca3d2b1 NB |
444 | /* init initializes library global state. It might not need to |
445 | do anything depending on the platform and compiler. */ | |
cf44ea52 | 446 | static void |
674c3b40 | 447 | init_library () |
cf44ea52 | 448 | { |
7ca3d2b1 NB |
449 | static int initialized = 0; |
450 | ||
451 | if (! initialized) | |
452 | { | |
453 | initialized = 1; | |
454 | ||
cf44ea52 | 455 | #ifdef HOST_EBCDIC |
7ca3d2b1 NB |
456 | /* For non-ASCII hosts, the cl_options array needs to be sorted at |
457 | runtime. */ | |
458 | qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp); | |
cf44ea52 NB |
459 | #endif |
460 | ||
7ca3d2b1 NB |
461 | /* Set up the trigraph map. This doesn't need to do anything if |
462 | we were compiled with a compiler that supports C99 designated | |
463 | initializers. */ | |
464 | init_trigraph_map (); | |
465 | } | |
cf44ea52 NB |
466 | } |
467 | ||
ec5c56db | 468 | /* Initialize a cpp_reader structure. */ |
cf44ea52 | 469 | cpp_reader * |
f5e99456 | 470 | cpp_create_reader (lang) |
dd07b884 | 471 | enum c_lang lang; |
6de1e2a9 | 472 | { |
7ca3d2b1 | 473 | cpp_reader *pfile; |
93c80368 | 474 | |
cf44ea52 | 475 | /* Initialise this instance of the library if it hasn't been already. */ |
674c3b40 | 476 | init_library (); |
7ca3d2b1 NB |
477 | |
478 | pfile = (cpp_reader *) xcalloc (1, sizeof (cpp_reader)); | |
93c80368 | 479 | |
c740cee2 | 480 | set_lang (pfile, lang); |
ae79697b | 481 | CPP_OPTION (pfile, warn_import) = 1; |
a5a49440 | 482 | CPP_OPTION (pfile, warn_multichar) = 1; |
ae79697b | 483 | CPP_OPTION (pfile, discard_comments) = 1; |
477cdac7 | 484 | CPP_OPTION (pfile, discard_comments_in_macro_exp) = 1; |
ae79697b | 485 | CPP_OPTION (pfile, show_column) = 1; |
6ab3e7dd | 486 | CPP_OPTION (pfile, tabstop) = 8; |
be768055 | 487 | CPP_OPTION (pfile, operator_names) = 1; |
909de5da | 488 | CPP_OPTION (pfile, warn_endif_labels) = 1; |
ae79697b ZW |
489 | |
490 | CPP_OPTION (pfile, pending) = | |
491 | (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending)); | |
492 | ||
2443d4e1 NB |
493 | /* Default CPP arithmetic to something sensible for the host for the |
494 | benefit of dumb users like fix-header. */ | |
c9220e3a | 495 | CPP_OPTION (pfile, precision) = CHAR_BIT * sizeof (long); |
2443d4e1 NB |
496 | CPP_OPTION (pfile, char_precision) = CHAR_BIT; |
497 | CPP_OPTION (pfile, wchar_precision) = CHAR_BIT * sizeof (int); | |
498 | CPP_OPTION (pfile, int_precision) = CHAR_BIT * sizeof (int); | |
2a1dc0d8 | 499 | CPP_OPTION (pfile, unsigned_char) = 0; |
44a147ad | 500 | CPP_OPTION (pfile, unsigned_wchar) = 1; |
4268e8bb | 501 | |
f7114e17 NB |
502 | /* It's simplest to just create this struct whether or not it will |
503 | be needed. */ | |
504 | pfile->deps = deps_init (); | |
505 | ||
50410426 NB |
506 | /* Initialise the line map. Start at logical line 1, so we can use |
507 | a line number of zero for special states. */ | |
d82fc108 | 508 | init_line_maps (&pfile->line_maps); |
1a76916c | 509 | pfile->line = 1; |
d82fc108 | 510 | |
4a58aab6 | 511 | /* Initialize lexer state. */ |
93c80368 NB |
512 | pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments); |
513 | ||
4ed5bcfb | 514 | /* Set up static tokens. */ |
93c80368 | 515 | pfile->date.type = CPP_EOF; |
4ed5bcfb NB |
516 | pfile->avoid_paste.type = CPP_PADDING; |
517 | pfile->avoid_paste.val.source = NULL; | |
518 | pfile->eof.type = CPP_EOF; | |
519 | pfile->eof.flags = 0; | |
93c80368 | 520 | |
5fddcffc NB |
521 | /* Create a token buffer for the lexer. */ |
522 | _cpp_init_tokenrun (&pfile->base_run, 250); | |
523 | pfile->cur_run = &pfile->base_run; | |
524 | pfile->cur_token = pfile->base_run.base; | |
5fddcffc | 525 | |
93c80368 NB |
526 | /* Initialise the base context. */ |
527 | pfile->context = &pfile->base_context; | |
528 | pfile->base_context.macro = 0; | |
529 | pfile->base_context.prev = pfile->base_context.next = 0; | |
530 | ||
8c3b2693 NB |
531 | /* Aligned and unaligned storage. */ |
532 | pfile->a_buff = _cpp_get_buff (pfile, 0); | |
ece54d54 | 533 | pfile->u_buff = _cpp_get_buff (pfile, 0); |
93c80368 | 534 | |
87ed109f NB |
535 | /* The expression parser stack. */ |
536 | _cpp_expand_op_stack (pfile); | |
537 | ||
2a967f3d NB |
538 | /* Initialise the buffer obstack. */ |
539 | gcc_obstack_init (&pfile->buffer_ob); | |
540 | ||
c71f835b | 541 | _cpp_init_includes (pfile); |
cf44ea52 NB |
542 | |
543 | return pfile; | |
f2d5f0cc ZW |
544 | } |
545 | ||
400023a3 | 546 | /* Free resources used by PFILE. Accessing PFILE after this function |
5d8ebbd8 | 547 | returns leads to undefined behaviour. Returns the error count. */ |
400023a3 NB |
548 | int |
549 | cpp_destroy (pfile) | |
6de1e2a9 ZW |
550 | cpp_reader *pfile; |
551 | { | |
400023a3 | 552 | int result; |
591e15a1 | 553 | struct search_path *dir, *dirn; |
93c80368 | 554 | cpp_context *context, *contextn; |
50410426 | 555 | tokenrun *run, *runn; |
709e9e50 | 556 | |
af0d16cd NB |
557 | free_chain (CPP_OPTION (pfile, pending)->include_head); |
558 | free (CPP_OPTION (pfile, pending)); | |
87ed109f | 559 | free (pfile->op_stack); |
af0d16cd | 560 | |
38b24ee2 | 561 | while (CPP_BUFFER (pfile) != NULL) |
ef6e958a | 562 | _cpp_pop_buffer (pfile); |
6de1e2a9 | 563 | |
1a76916c NB |
564 | if (pfile->out.base) |
565 | free (pfile->out.base); | |
004cb263 | 566 | |
93c80368 | 567 | if (pfile->macro_buffer) |
4b49c365 AO |
568 | { |
569 | free ((PTR) pfile->macro_buffer); | |
570 | pfile->macro_buffer = NULL; | |
571 | pfile->macro_buffer_len = 0; | |
572 | } | |
93c80368 | 573 | |
f7114e17 | 574 | deps_free (pfile->deps); |
2a967f3d | 575 | obstack_free (&pfile->buffer_ob, 0); |
49e6c08e | 576 | |
2a967f3d | 577 | _cpp_destroy_hashtable (pfile); |
bfb9dc7f | 578 | _cpp_cleanup_includes (pfile); |
709e9e50 | 579 | |
8c3b2693 | 580 | _cpp_free_buff (pfile->a_buff); |
ece54d54 | 581 | _cpp_free_buff (pfile->u_buff); |
b8af0ca5 | 582 | _cpp_free_buff (pfile->free_buffs); |
93c80368 | 583 | |
50410426 NB |
584 | for (run = &pfile->base_run; run; run = runn) |
585 | { | |
586 | runn = run->next; | |
587 | free (run->base); | |
588 | if (run != &pfile->base_run) | |
589 | free (run); | |
590 | } | |
591 | ||
93c80368 | 592 | for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn) |
709e9e50 | 593 | { |
93c80368 | 594 | dirn = dir->next; |
591e15a1 | 595 | free ((PTR) dir->name); |
709e9e50 NB |
596 | free (dir); |
597 | } | |
93c80368 NB |
598 | |
599 | for (context = pfile->base_context.next; context; context = contextn) | |
600 | { | |
601 | contextn = context->next; | |
602 | free (context); | |
603 | } | |
400023a3 | 604 | |
d82fc108 NB |
605 | free_line_maps (&pfile->line_maps); |
606 | ||
400023a3 NB |
607 | result = pfile->errors; |
608 | free (pfile); | |
609 | ||
610 | return result; | |
6de1e2a9 ZW |
611 | } |
612 | ||
93c80368 | 613 | /* This structure defines one built-in identifier. A node will be |
f24a153a ZW |
614 | entered in the hash table under the name NAME, with value VALUE. |
615 | ||
616 | There are two tables of these. builtin_array holds all the | |
617 | "builtin" macros: these are handled by builtin_macro() in | |
618 | cppmacro.c. Builtin is somewhat of a misnomer -- the property of | |
619 | interest is that these macros require special code to compute their | |
620 | expansions. The value is a "builtin_type" enumerator. | |
621 | ||
622 | operator_array holds the C++ named operators. These are keywords | |
623 | which act as aliases for punctuators. In C++, they cannot be | |
624 | altered through #define, and #if recognizes them as operators. In | |
625 | C, these are not entered into the hash table at all (but see | |
626 | <iso646.h>). The value is a token-type enumerator. */ | |
a9ae4483 ZW |
627 | struct builtin |
628 | { | |
562a5c27 | 629 | const uchar *name; |
93c80368 | 630 | unsigned short len; |
f24a153a | 631 | unsigned short value; |
a9ae4483 | 632 | }; |
93c80368 | 633 | |
f24a153a | 634 | #define B(n, t) { DSC(n), t } |
a9ae4483 | 635 | static const struct builtin builtin_array[] = |
6de1e2a9 | 636 | { |
93c80368 NB |
637 | B("__TIME__", BT_TIME), |
638 | B("__DATE__", BT_DATE), | |
639 | B("__FILE__", BT_FILE), | |
640 | B("__BASE_FILE__", BT_BASE_FILE), | |
641 | B("__LINE__", BT_SPECLINE), | |
642 | B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL), | |
644eddaa | 643 | B("_Pragma", BT_PRAGMA), |
618cdda7 | 644 | B("__STDC__", BT_STDC), |
f24a153a | 645 | }; |
92936ecf | 646 | |
f24a153a ZW |
647 | static const struct builtin operator_array[] = |
648 | { | |
649 | B("and", CPP_AND_AND), | |
650 | B("and_eq", CPP_AND_EQ), | |
651 | B("bitand", CPP_AND), | |
652 | B("bitor", CPP_OR), | |
653 | B("compl", CPP_COMPL), | |
654 | B("not", CPP_NOT), | |
655 | B("not_eq", CPP_NOT_EQ), | |
656 | B("or", CPP_OR_OR), | |
657 | B("or_eq", CPP_OR_EQ), | |
658 | B("xor", CPP_XOR), | |
659 | B("xor_eq", CPP_XOR_EQ) | |
a9ae4483 | 660 | }; |
12cf91fe | 661 | #undef B |
a9ae4483 | 662 | |
17645b15 NB |
663 | /* Mark the C++ named operators in the hash table. */ |
664 | static void | |
665 | mark_named_operators (pfile) | |
666 | cpp_reader *pfile; | |
667 | { | |
668 | const struct builtin *b; | |
669 | ||
670 | for (b = operator_array; | |
671 | b < (operator_array + ARRAY_SIZE (operator_array)); | |
672 | b++) | |
673 | { | |
674 | cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len); | |
675 | hp->flags |= NODE_OPERATOR; | |
676 | hp->value.operator = b->value; | |
677 | } | |
678 | } | |
679 | ||
f5e99456 | 680 | /* Subroutine of cpp_read_main_file; reads the builtins table above and |
5d8ebbd8 | 681 | enters them, and language-specific macros, into the hash table. */ |
a9ae4483 | 682 | static void |
7ca3d2b1 | 683 | init_builtins (pfile) |
a9ae4483 ZW |
684 | cpp_reader *pfile; |
685 | { | |
a9ae4483 | 686 | const struct builtin *b; |
771c4df3 | 687 | |
f24a153a ZW |
688 | for(b = builtin_array; |
689 | b < (builtin_array + ARRAY_SIZE (builtin_array)); | |
690 | b++) | |
6de1e2a9 | 691 | { |
f24a153a ZW |
692 | cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len); |
693 | hp->type = NT_MACRO; | |
694 | hp->flags |= NODE_BUILTIN | NODE_WARN; | |
695 | hp->value.builtin = b->value; | |
6de1e2a9 | 696 | } |
c740cee2 NB |
697 | |
698 | if (CPP_OPTION (pfile, cplusplus)) | |
3d90d290 | 699 | _cpp_define_builtin (pfile, "__cplusplus 1"); |
2a1dc0d8 | 700 | else if (CPP_OPTION (pfile, objc)) |
c740cee2 | 701 | _cpp_define_builtin (pfile, "__OBJC__ 1"); |
2a1dc0d8 ZW |
702 | else if (CPP_OPTION (pfile, lang) == CLK_ASM) |
703 | _cpp_define_builtin (pfile, "__ASSEMBLER__ 1"); | |
c740cee2 NB |
704 | |
705 | if (CPP_OPTION (pfile, lang) == CLK_STDC94) | |
706 | _cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L"); | |
707 | else if (CPP_OPTION (pfile, c99)) | |
708 | _cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L"); | |
709 | ||
3d90d290 NB |
710 | if (pfile->cb.register_builtins) |
711 | (*pfile->cb.register_builtins) (pfile); | |
6de1e2a9 ZW |
712 | } |
713 | ||
c45da1ca ZW |
714 | /* And another subroutine. This one sets up the standard include path. */ |
715 | static void | |
7ca3d2b1 | 716 | init_standard_includes (pfile) |
c45da1ca ZW |
717 | cpp_reader *pfile; |
718 | { | |
c45da1ca | 719 | char *path; |
455d2586 | 720 | const struct default_include *p; |
ae79697b | 721 | const char *specd_prefix = CPP_OPTION (pfile, include_prefix); |
c45da1ca ZW |
722 | |
723 | /* Several environment variables may add to the include search path. | |
724 | CPATH specifies an additional list of directories to be searched | |
725 | as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH, | |
726 | etc. specify an additional list of directories to be searched as | |
727 | if specified with -isystem, for the language indicated. */ | |
728 | ||
729 | GET_ENV_PATH_LIST (path, "CPATH"); | |
730 | if (path != 0 && *path != 0) | |
e33f6253 | 731 | path_include (pfile, path, BRACKET); |
c45da1ca | 732 | |
ae79697b | 733 | switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus)) |
c45da1ca ZW |
734 | { |
735 | case 0: | |
736 | GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH"); | |
737 | break; | |
738 | case 1: | |
739 | GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH"); | |
740 | break; | |
741 | case 2: | |
742 | GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH"); | |
743 | break; | |
744 | case 3: | |
745 | GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH"); | |
746 | break; | |
747 | } | |
748 | if (path != 0 && *path != 0) | |
e33f6253 | 749 | path_include (pfile, path, SYSTEM); |
c45da1ca ZW |
750 | |
751 | /* Search "translated" versions of GNU directories. | |
752 | These have /usr/local/lib/gcc... replaced by specd_prefix. */ | |
60893f43 | 753 | if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len) |
c45da1ca | 754 | { |
c45da1ca | 755 | /* Remove the `include' from /usr/local/lib/gcc.../include. |
ec5c56db | 756 | GCC_INCLUDE_DIR will always end in /include. */ |
60893f43 ZW |
757 | int default_len = cpp_GCC_INCLUDE_DIR_len; |
758 | char *default_prefix = (char *) alloca (default_len + 1); | |
c45da1ca ZW |
759 | int specd_len = strlen (specd_prefix); |
760 | ||
60893f43 | 761 | memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len); |
c45da1ca ZW |
762 | default_prefix[default_len] = '\0'; |
763 | ||
60893f43 | 764 | for (p = cpp_include_defaults; p->fname; p++) |
c45da1ca ZW |
765 | { |
766 | /* Some standard dirs are only for C++. */ | |
767 | if (!p->cplusplus | |
ae79697b ZW |
768 | || (CPP_OPTION (pfile, cplusplus) |
769 | && !CPP_OPTION (pfile, no_standard_cplusplus_includes))) | |
c45da1ca ZW |
770 | { |
771 | /* Does this dir start with the prefix? */ | |
61d0346d | 772 | if (!memcmp (p->fname, default_prefix, default_len)) |
c45da1ca ZW |
773 | { |
774 | /* Yes; change prefix and add to search list. */ | |
775 | int flen = strlen (p->fname); | |
776 | int this_len = specd_len + flen - default_len; | |
777 | char *str = (char *) xmalloc (this_len + 1); | |
778 | memcpy (str, specd_prefix, specd_len); | |
779 | memcpy (str + specd_len, | |
780 | p->fname + default_len, | |
781 | flen - default_len + 1); | |
782 | ||
e33f6253 | 783 | append_include_chain (pfile, str, SYSTEM, p->cxx_aware); |
c45da1ca ZW |
784 | } |
785 | } | |
786 | } | |
787 | } | |
788 | ||
789 | /* Search ordinary names for GNU include directories. */ | |
60893f43 | 790 | for (p = cpp_include_defaults; p->fname; p++) |
c45da1ca ZW |
791 | { |
792 | /* Some standard dirs are only for C++. */ | |
793 | if (!p->cplusplus | |
ae79697b ZW |
794 | || (CPP_OPTION (pfile, cplusplus) |
795 | && !CPP_OPTION (pfile, no_standard_cplusplus_includes))) | |
c45da1ca | 796 | { |
51c04256 | 797 | char *str = update_path (p->fname, p->component); |
e33f6253 | 798 | append_include_chain (pfile, str, SYSTEM, p->cxx_aware); |
c45da1ca ZW |
799 | } |
800 | } | |
801 | } | |
802 | ||
5d8ebbd8 | 803 | /* Pushes a command line -imacro and -include file indicated by P onto |
d7bc7a98 NB |
804 | the buffer stack. Returns non-zero if successful. */ |
805 | static bool | |
806 | push_include (pfile, p) | |
4a58aab6 NB |
807 | cpp_reader *pfile; |
808 | struct pending_option *p; | |
4a58aab6 | 809 | { |
d7bc7a98 | 810 | cpp_token header; |
4a58aab6 | 811 | |
d7bc7a98 NB |
812 | /* Later: maybe update this to use the #include "" search path |
813 | if cpp_read_file fails. */ | |
814 | header.type = CPP_STRING; | |
815 | header.val.str.text = (const unsigned char *) p->arg; | |
816 | header.val.str.len = strlen (p->arg); | |
817 | /* Make the command line directive take up a line. */ | |
50410426 | 818 | pfile->line++; |
d7bc7a98 NB |
819 | |
820 | return _cpp_execute_include (pfile, &header, IT_CMDLINE); | |
821 | } | |
822 | ||
823 | /* Frees a pending_option chain. */ | |
824 | static void | |
825 | free_chain (head) | |
826 | struct pending_option *head; | |
827 | { | |
828 | struct pending_option *next; | |
829 | ||
830 | while (head) | |
831 | { | |
832 | next = head->next; | |
833 | free (head); | |
834 | head = next; | |
4a58aab6 NB |
835 | } |
836 | } | |
837 | ||
2443d4e1 NB |
838 | /* Sanity-checks are dependent on command-line options, so it is |
839 | called as a subroutine of cpp_read_main_file (). */ | |
840 | #if ENABLE_CHECKING | |
841 | static void sanity_checks PARAMS ((cpp_reader *)); | |
842 | static void sanity_checks (pfile) | |
843 | cpp_reader *pfile; | |
844 | { | |
845 | cppchar_t test = 0; | |
c9220e3a | 846 | size_t max_precision = 2 * CHAR_BIT * sizeof (cpp_num_part); |
2443d4e1 NB |
847 | |
848 | /* Sanity checks for assumptions about CPP arithmetic and target | |
849 | type precisions made by cpplib. */ | |
850 | test--; | |
851 | if (test < 1) | |
bdee42b1 | 852 | cpp_error (pfile, DL_ICE, "cppchar_t must be an unsigned type"); |
2443d4e1 | 853 | |
c9220e3a | 854 | if (CPP_OPTION (pfile, precision) > max_precision) |
bdee42b1 | 855 | cpp_error (pfile, DL_ICE, |
68bd6dd6 | 856 | "preprocessor arithmetic has maximum precision of %lu bits; target requires %lu bits", |
c9220e3a NB |
857 | (unsigned long) max_precision, |
858 | (unsigned long) CPP_OPTION (pfile, precision)); | |
2443d4e1 NB |
859 | |
860 | if (CPP_OPTION (pfile, precision) < CPP_OPTION (pfile, int_precision)) | |
bdee42b1 | 861 | cpp_error (pfile, DL_ICE, |
2443d4e1 NB |
862 | "CPP arithmetic must be at least as precise as a target int"); |
863 | ||
864 | if (CPP_OPTION (pfile, char_precision) < 8) | |
bdee42b1 | 865 | cpp_error (pfile, DL_ICE, "target char is less than 8 bits wide"); |
2443d4e1 NB |
866 | |
867 | if (CPP_OPTION (pfile, wchar_precision) < CPP_OPTION (pfile, char_precision)) | |
bdee42b1 | 868 | cpp_error (pfile, DL_ICE, |
2443d4e1 NB |
869 | "target wchar_t is narrower than target char"); |
870 | ||
871 | if (CPP_OPTION (pfile, int_precision) < CPP_OPTION (pfile, char_precision)) | |
bdee42b1 | 872 | cpp_error (pfile, DL_ICE, |
2443d4e1 NB |
873 | "target int is narrower than target char"); |
874 | ||
c9220e3a NB |
875 | /* This is assumed in eval_token() and could be fixed if necessary. */ |
876 | if (sizeof (cppchar_t) > sizeof (cpp_num_part)) | |
877 | cpp_error (pfile, DL_ICE, "CPP half-integer narrower than CPP character"); | |
878 | ||
2443d4e1 | 879 | if (CPP_OPTION (pfile, wchar_precision) > BITS_PER_CPPCHAR_T) |
bdee42b1 | 880 | cpp_error (pfile, DL_ICE, |
68bd6dd6 | 881 | "CPP on this host cannot handle wide character constants over %lu bits, but the target requires %lu bits", |
c9220e3a NB |
882 | (unsigned long) BITS_PER_CPPCHAR_T, |
883 | (unsigned long) CPP_OPTION (pfile, wchar_precision)); | |
2443d4e1 NB |
884 | } |
885 | #else | |
886 | # define sanity_checks(PFILE) | |
887 | #endif | |
888 | ||
f5e99456 NB |
889 | /* This is called after options have been parsed, and partially |
890 | processed. Setup for processing input from the file named FNAME, | |
891 | or stdin if it is the empty string. Return the original filename | |
892 | on success (e.g. foo.i->foo.c), or NULL on failure. */ | |
893 | const char * | |
894 | cpp_read_main_file (pfile, fname, table) | |
6de1e2a9 | 895 | cpp_reader *pfile; |
7ceb3598 | 896 | const char *fname; |
f5e99456 | 897 | hash_table *table; |
6de1e2a9 | 898 | { |
2443d4e1 NB |
899 | sanity_checks (pfile); |
900 | ||
f5e99456 NB |
901 | /* The front ends don't set up the hash table until they have |
902 | finished processing the command line options, so initializing the | |
903 | hashtable is deferred until now. */ | |
904 | _cpp_init_hashtable (pfile, table); | |
905 | ||
c45da1ca | 906 | /* Set up the include search path now. */ |
ae79697b | 907 | if (! CPP_OPTION (pfile, no_standard_includes)) |
7ca3d2b1 | 908 | init_standard_includes (pfile); |
c45da1ca | 909 | |
ae79697b | 910 | merge_include_chains (pfile); |
c45da1ca ZW |
911 | |
912 | /* With -v, print the list of dirs to search. */ | |
ae79697b | 913 | if (CPP_OPTION (pfile, verbose)) |
c45da1ca | 914 | { |
591e15a1 | 915 | struct search_path *l; |
c45da1ca | 916 | fprintf (stderr, _("#include \"...\" search starts here:\n")); |
ae79697b | 917 | for (l = CPP_OPTION (pfile, quote_include); l; l = l->next) |
c45da1ca | 918 | { |
ae79697b | 919 | if (l == CPP_OPTION (pfile, bracket_include)) |
c45da1ca ZW |
920 | fprintf (stderr, _("#include <...> search starts here:\n")); |
921 | fprintf (stderr, " %s\n", l->name); | |
922 | } | |
923 | fprintf (stderr, _("End of search list.\n")); | |
924 | } | |
925 | ||
96302433 | 926 | if (CPP_OPTION (pfile, print_deps)) |
7855db7c | 927 | /* Set the default target (if there is none already). */ |
373e2177 | 928 | deps_add_default_target (pfile->deps, fname); |
96302433 | 929 | |
f5e99456 | 930 | /* Open the main input file. */ |
614c7d37 | 931 | if (!_cpp_read_file (pfile, fname)) |
f5e99456 | 932 | return NULL; |
c45da1ca | 933 | |
5993019d NB |
934 | /* Set this after cpp_post_options so the client can change the |
935 | option if it wishes, and after stacking the main file so we don't | |
936 | trace the main file. */ | |
937 | pfile->line_maps.trace_includes = CPP_OPTION (pfile, print_include_names); | |
938 | ||
f5e99456 NB |
939 | /* For foo.i, read the original filename foo.c now, for the benefit |
940 | of the front ends. */ | |
941 | if (CPP_OPTION (pfile, preprocessed)) | |
942 | read_original_filename (pfile); | |
004cb263 | 943 | /* Overlay an empty buffer to seed traditional preprocessing. */ |
1a76916c NB |
944 | else if (CPP_OPTION (pfile, traditional) |
945 | && !CPP_OPTION (pfile, preprocess_only)) | |
004cb263 | 946 | _cpp_overlay_buffer (pfile, U"", 0); |
f5e99456 NB |
947 | |
948 | return pfile->map->to_file; | |
949 | } | |
950 | ||
951 | /* For preprocessed files, if the first tokens are of the form # NUM. | |
952 | handle the directive so we know the original file name. This will | |
953 | generate file_change callbacks, which the front ends must handle | |
954 | appropriately given their state of initialization. */ | |
955 | static void | |
956 | read_original_filename (pfile) | |
957 | cpp_reader *pfile; | |
958 | { | |
959 | const cpp_token *token, *token1; | |
960 | ||
961 | /* Lex ahead; if the first tokens are of the form # NUM, then | |
962 | process the directive, otherwise back up. */ | |
963 | token = _cpp_lex_direct (pfile); | |
964 | if (token->type == CPP_HASH) | |
965 | { | |
966 | token1 = _cpp_lex_direct (pfile); | |
967 | _cpp_backup_tokens (pfile, 1); | |
968 | ||
969 | /* If it's a #line directive, handle it. */ | |
970 | if (token1->type == CPP_NUMBER) | |
971 | { | |
972 | _cpp_handle_directive (pfile, token->flags & PREV_WHITE); | |
973 | return; | |
974 | } | |
975 | } | |
976 | ||
977 | /* Backup as if nothing happened. */ | |
978 | _cpp_backup_tokens (pfile, 1); | |
979 | } | |
980 | ||
981 | /* Handle pending command line options: -D, -U, -A, -imacros and | |
982 | -include. This should be called after debugging has been properly | |
983 | set up in the front ends. */ | |
984 | void | |
985 | cpp_finish_options (pfile) | |
986 | cpp_reader *pfile; | |
987 | { | |
17645b15 NB |
988 | /* Mark named operators before handling command line macros. */ |
989 | if (CPP_OPTION (pfile, cplusplus) && CPP_OPTION (pfile, operator_names)) | |
990 | mark_named_operators (pfile); | |
991 | ||
d7bc7a98 NB |
992 | /* Install builtins and process command line macros etc. in the order |
993 | they appeared, but only if not already preprocessed. */ | |
05e81724 | 994 | if (! CPP_OPTION (pfile, preprocessed)) |
6de1e2a9 | 995 | { |
d7bc7a98 NB |
996 | struct pending_option *p; |
997 | ||
b0287a90 | 998 | _cpp_do_file_change (pfile, LC_RENAME, _("<built-in>"), 1, 0); |
cbc69f84 | 999 | init_builtins (pfile); |
d7bc7a98 | 1000 | _cpp_do_file_change (pfile, LC_RENAME, _("<command line>"), 1, 0); |
cbc69f84 NB |
1001 | for (p = CPP_OPTION (pfile, pending)->directive_head; p; p = p->next) |
1002 | (*p->handler) (pfile, p->arg); | |
d7bc7a98 | 1003 | |
af0d16cd NB |
1004 | /* Scan -imacros files after -D, -U, but before -include. |
1005 | pfile->next_include_file is NULL, so _cpp_pop_buffer does not | |
1006 | push -include files. */ | |
1007 | for (p = CPP_OPTION (pfile, pending)->imacros_head; p; p = p->next) | |
1008 | if (push_include (pfile, p)) | |
1009 | cpp_scan_nooutput (pfile); | |
1010 | ||
1011 | pfile->next_include_file = &CPP_OPTION (pfile, pending)->include_head; | |
1012 | _cpp_maybe_push_include_file (pfile); | |
6de1e2a9 | 1013 | } |
05e81724 | 1014 | |
af0d16cd | 1015 | free_chain (CPP_OPTION (pfile, pending)->imacros_head); |
d7bc7a98 | 1016 | free_chain (CPP_OPTION (pfile, pending)->directive_head); |
d7bc7a98 | 1017 | } |
6de1e2a9 | 1018 | |
af0d16cd NB |
1019 | /* Push the next buffer on the stack given by -include, if any. */ |
1020 | void | |
1021 | _cpp_maybe_push_include_file (pfile) | |
d7bc7a98 NB |
1022 | cpp_reader *pfile; |
1023 | { | |
af0d16cd | 1024 | if (pfile->next_include_file) |
d7bc7a98 | 1025 | { |
af0d16cd | 1026 | struct pending_option *head = *pfile->next_include_file; |
df383483 | 1027 | |
af0d16cd NB |
1028 | while (head && !push_include (pfile, head)) |
1029 | head = head->next; | |
d7bc7a98 | 1030 | |
af0d16cd NB |
1031 | if (head) |
1032 | pfile->next_include_file = &head->next; | |
1033 | else | |
d7bc7a98 | 1034 | { |
af0d16cd NB |
1035 | /* All done; restore the line map from <command line>. */ |
1036 | _cpp_do_file_change (pfile, LC_RENAME, | |
1037 | pfile->line_maps.maps[0].to_file, 1, 0); | |
1038 | /* Don't come back here again. */ | |
1039 | pfile->next_include_file = NULL; | |
d7bc7a98 NB |
1040 | } |
1041 | } | |
6de1e2a9 ZW |
1042 | } |
1043 | ||
2f638f96 | 1044 | /* Use mkdeps.c to output dependency information. */ |
7ca3d2b1 NB |
1045 | static void |
1046 | output_deps (pfile) | |
1047 | cpp_reader *pfile; | |
1048 | { | |
1049 | /* Stream on which to print the dependency information. */ | |
1050 | FILE *deps_stream = 0; | |
27c38fbe KG |
1051 | const char *const deps_mode = |
1052 | CPP_OPTION (pfile, print_deps_append) ? "a" : "w"; | |
7ca3d2b1 | 1053 | |
56cd5b95 | 1054 | if (CPP_OPTION (pfile, deps_file)[0] == '\0') |
7ca3d2b1 NB |
1055 | deps_stream = stdout; |
1056 | else | |
1057 | { | |
1058 | deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode); | |
1059 | if (deps_stream == 0) | |
1060 | { | |
ebef4e8c | 1061 | cpp_errno (pfile, DL_ERROR, CPP_OPTION (pfile, deps_file)); |
7ca3d2b1 NB |
1062 | return; |
1063 | } | |
1064 | } | |
1065 | ||
1066 | deps_write (pfile->deps, deps_stream, 72); | |
1067 | ||
1068 | if (CPP_OPTION (pfile, deps_phony_targets)) | |
1069 | deps_phony_targets (pfile->deps, deps_stream); | |
1070 | ||
1071 | /* Don't close stdout. */ | |
ab8e2228 | 1072 | if (deps_stream != stdout) |
7ca3d2b1 NB |
1073 | { |
1074 | if (ferror (deps_stream) || fclose (deps_stream) != 0) | |
bdee42b1 | 1075 | cpp_error (pfile, DL_ERROR, "I/O error on output"); |
7ca3d2b1 NB |
1076 | } |
1077 | } | |
1078 | ||
6de1e2a9 ZW |
1079 | /* This is called at the end of preprocessing. It pops the |
1080 | last buffer and writes dependency output. It should also | |
1081 | clear macro definitions, such that you could call cpp_start_read | |
4a58aab6 | 1082 | with a new filename to restart processing. */ |
6de1e2a9 | 1083 | void |
93c80368 | 1084 | cpp_finish (pfile) |
6de1e2a9 ZW |
1085 | cpp_reader *pfile; |
1086 | { | |
7364fdd8 NB |
1087 | /* cpplex.c leaves the final buffer on the stack. This it so that |
1088 | it returns an unending stream of CPP_EOFs to the client. If we | |
a1f300c0 | 1089 | popped the buffer, we'd dereference a NULL buffer pointer and |
7364fdd8 NB |
1090 | segfault. It's nice to allow the client to do worry-free excess |
1091 | cpp_get_token calls. */ | |
1092 | while (pfile->buffer) | |
1093 | _cpp_pop_buffer (pfile); | |
c1212d2f | 1094 | |
49e6c08e | 1095 | /* Don't write the deps file if preprocessing has failed. */ |
ae79697b | 1096 | if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0) |
7ca3d2b1 | 1097 | output_deps (pfile); |
3caee4a8 | 1098 | |
d4506961 ZW |
1099 | /* Report on headers that could use multiple include guards. */ |
1100 | if (CPP_OPTION (pfile, print_include_names)) | |
c71f835b | 1101 | _cpp_report_missing_guards (pfile); |
6de1e2a9 ZW |
1102 | } |
1103 | ||
5d8ebbd8 | 1104 | /* Add a directive to be handled later in the initialization phase. */ |
223dca6a | 1105 | static void |
ae79697b ZW |
1106 | new_pending_directive (pend, text, handler) |
1107 | struct cpp_pending *pend; | |
223dca6a | 1108 | const char *text; |
40eac643 | 1109 | cl_directive_handler handler; |
223dca6a RH |
1110 | { |
1111 | struct pending_option *o = (struct pending_option *) | |
1112 | xmalloc (sizeof (struct pending_option)); | |
1113 | ||
7ceb3598 | 1114 | o->arg = text; |
223dca6a | 1115 | o->next = NULL; |
40eac643 | 1116 | o->handler = handler; |
ae79697b | 1117 | APPEND (pend, directive, o); |
223dca6a RH |
1118 | } |
1119 | ||
ae79697b ZW |
1120 | /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string"); |
1121 | I.e. a const string initializer with parens around it. That is | |
1122 | what N_("string") resolves to, so we make no_* be macros instead. */ | |
c725bd79 NB |
1123 | #define no_arg N_("argument missing after %s") |
1124 | #define no_ass N_("assertion missing after %s") | |
1125 | #define no_dir N_("directory name missing after %s") | |
1126 | #define no_fil N_("file name missing after %s") | |
1127 | #define no_mac N_("macro name missing after %s") | |
1128 | #define no_pth N_("path name missing after %s") | |
1129 | #define no_num N_("number missing after %s") | |
1130 | #define no_tgt N_("target missing after %s") | |
ae79697b ZW |
1131 | |
1132 | /* This is the list of all command line options, with the leading | |
1133 | "-" removed. It must be sorted in ASCII collating order. */ | |
1134 | #define COMMAND_LINE_OPTIONS \ | |
ae79697b | 1135 | DEF_OPT("$", 0, OPT_dollar) \ |
ae79697b | 1136 | DEF_OPT("-help", 0, OPT__help) \ |
91606ce2 | 1137 | DEF_OPT("-target-help", 0, OPT_target__help) \ |
ae79697b ZW |
1138 | DEF_OPT("-version", 0, OPT__version) \ |
1139 | DEF_OPT("A", no_ass, OPT_A) \ | |
1140 | DEF_OPT("C", 0, OPT_C) \ | |
477cdac7 | 1141 | DEF_OPT("CC", 0, OPT_CC) \ |
ae79697b ZW |
1142 | DEF_OPT("D", no_mac, OPT_D) \ |
1143 | DEF_OPT("H", 0, OPT_H) \ | |
1144 | DEF_OPT("I", no_dir, OPT_I) \ | |
1145 | DEF_OPT("M", 0, OPT_M) \ | |
b3124fac | 1146 | DEF_OPT("MD", no_fil, OPT_MD) \ |
96302433 | 1147 | DEF_OPT("MF", no_fil, OPT_MF) \ |
ae79697b ZW |
1148 | DEF_OPT("MG", 0, OPT_MG) \ |
1149 | DEF_OPT("MM", 0, OPT_MM) \ | |
b3124fac | 1150 | DEF_OPT("MMD", no_fil, OPT_MMD) \ |
a5a4ce3c | 1151 | DEF_OPT("MP", 0, OPT_MP) \ |
f7114e17 | 1152 | DEF_OPT("MQ", no_tgt, OPT_MQ) \ |
03b9ab42 | 1153 | DEF_OPT("MT", no_tgt, OPT_MT) \ |
ae79697b ZW |
1154 | DEF_OPT("P", 0, OPT_P) \ |
1155 | DEF_OPT("U", no_mac, OPT_U) \ | |
09e77dee ZW |
1156 | DEF_OPT("Wall", 0, OPT_Wall) \ |
1157 | DEF_OPT("Wcomment", 0, OPT_Wcomment) \ | |
1158 | DEF_OPT("Wcomments", 0, OPT_Wcomments) \ | |
1159 | DEF_OPT("Wendif-labels", 0, OPT_Wendif_labels) \ | |
1160 | DEF_OPT("Werror", 0, OPT_Werror) \ | |
1161 | DEF_OPT("Wimport", 0, OPT_Wimport) \ | |
1162 | DEF_OPT("Wno-comment", 0, OPT_Wno_comment) \ | |
1163 | DEF_OPT("Wno-comments", 0, OPT_Wno_comments) \ | |
1164 | DEF_OPT("Wno-endif-labels", 0, OPT_Wno_endif_labels) \ | |
1165 | DEF_OPT("Wno-error", 0, OPT_Wno_error) \ | |
1166 | DEF_OPT("Wno-import", 0, OPT_Wno_import) \ | |
1167 | DEF_OPT("Wno-system-headers", 0, OPT_Wno_system_headers) \ | |
1168 | DEF_OPT("Wno-traditional", 0, OPT_Wno_traditional) \ | |
1169 | DEF_OPT("Wno-trigraphs", 0, OPT_Wno_trigraphs) \ | |
1170 | DEF_OPT("Wno-undef", 0, OPT_Wno_undef) \ | |
1171 | DEF_OPT("Wsystem-headers", 0, OPT_Wsystem_headers) \ | |
1172 | DEF_OPT("Wtraditional", 0, OPT_Wtraditional) \ | |
1173 | DEF_OPT("Wtrigraphs", 0, OPT_Wtrigraphs) \ | |
1174 | DEF_OPT("Wundef", 0, OPT_Wundef) \ | |
ae79697b | 1175 | DEF_OPT("d", no_arg, OPT_d) \ |
be768055 | 1176 | DEF_OPT("fno-operator-names", 0, OPT_fno_operator_names) \ |
ae79697b ZW |
1177 | DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \ |
1178 | DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \ | |
1179 | DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \ | |
1180 | DEF_OPT("fshow-column", 0, OPT_fshow_column) \ | |
6ab3e7dd | 1181 | DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \ |
ae79697b ZW |
1182 | DEF_OPT("h", 0, OPT_h) \ |
1183 | DEF_OPT("idirafter", no_dir, OPT_idirafter) \ | |
1184 | DEF_OPT("imacros", no_fil, OPT_imacros) \ | |
1185 | DEF_OPT("include", no_fil, OPT_include) \ | |
1186 | DEF_OPT("iprefix", no_pth, OPT_iprefix) \ | |
1187 | DEF_OPT("isystem", no_dir, OPT_isystem) \ | |
1188 | DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \ | |
1189 | DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \ | |
1190 | DEF_OPT("lang-asm", 0, OPT_lang_asm) \ | |
1191 | DEF_OPT("lang-c", 0, OPT_lang_c) \ | |
1192 | DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \ | |
1193 | DEF_OPT("lang-c89", 0, OPT_lang_c89) \ | |
ae79697b | 1194 | DEF_OPT("lang-objc", 0, OPT_lang_objc) \ |
ae79697b ZW |
1195 | DEF_OPT("nostdinc", 0, OPT_nostdinc) \ |
1196 | DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \ | |
1197 | DEF_OPT("o", no_fil, OPT_o) \ | |
1198 | DEF_OPT("pedantic", 0, OPT_pedantic) \ | |
1199 | DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \ | |
1200 | DEF_OPT("remap", 0, OPT_remap) \ | |
dd07b884 | 1201 | DEF_OPT("std=c++98", 0, OPT_std_cplusplus98) \ |
ae79697b ZW |
1202 | DEF_OPT("std=c89", 0, OPT_std_c89) \ |
1203 | DEF_OPT("std=c99", 0, OPT_std_c99) \ | |
1204 | DEF_OPT("std=c9x", 0, OPT_std_c9x) \ | |
1205 | DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \ | |
1206 | DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \ | |
1207 | DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \ | |
1208 | DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \ | |
1209 | DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \ | |
1210 | DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \ | |
1211 | DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \ | |
004cb263 | 1212 | DEF_OPT("traditional-cpp", 0, OPT_traditional_cpp) \ |
ae79697b ZW |
1213 | DEF_OPT("trigraphs", 0, OPT_trigraphs) \ |
1214 | DEF_OPT("v", 0, OPT_v) \ | |
1215 | DEF_OPT("w", 0, OPT_w) | |
1216 | ||
1217 | #define DEF_OPT(text, msg, code) code, | |
e23c0ba3 ZW |
1218 | enum opt_code |
1219 | { | |
ae79697b | 1220 | COMMAND_LINE_OPTIONS |
e23c0ba3 ZW |
1221 | N_OPTS |
1222 | }; | |
ae79697b | 1223 | #undef DEF_OPT |
e23c0ba3 ZW |
1224 | |
1225 | struct cl_option | |
1226 | { | |
1227 | const char *opt_text; | |
1228 | const char *msg; | |
1229 | size_t opt_len; | |
1230 | enum opt_code opt_code; | |
1231 | }; | |
1232 | ||
ae79697b | 1233 | #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code }, |
e23c0ba3 ZW |
1234 | #ifdef HOST_EBCDIC |
1235 | static struct cl_option cl_options[] = | |
1236 | #else | |
1237 | static const struct cl_option cl_options[] = | |
1238 | #endif | |
1239 | { | |
ae79697b | 1240 | COMMAND_LINE_OPTIONS |
e23c0ba3 ZW |
1241 | }; |
1242 | #undef DEF_OPT | |
ae79697b | 1243 | #undef COMMAND_LINE_OPTIONS |
e23c0ba3 ZW |
1244 | |
1245 | /* Perform a binary search to find which, if any, option the given | |
1246 | command-line matches. Returns its index in the option array, | |
1247 | negative on failure. Complications arise since some options can be | |
1248 | suffixed with an argument, and multiple complete matches can occur, | |
09e77dee | 1249 | e.g. -pedantic and -pedantic-errors. */ |
e23c0ba3 ZW |
1250 | static int |
1251 | parse_option (input) | |
1252 | const char *input; | |
1253 | { | |
1254 | unsigned int md, mn, mx; | |
1255 | size_t opt_len; | |
1256 | int comp; | |
1257 | ||
1258 | mn = 0; | |
1259 | mx = N_OPTS; | |
1260 | ||
1261 | while (mx > mn) | |
1262 | { | |
1263 | md = (mn + mx) / 2; | |
ae79697b | 1264 | |
e23c0ba3 | 1265 | opt_len = cl_options[md].opt_len; |
61d0346d | 1266 | comp = memcmp (input, cl_options[md].opt_text, opt_len); |
ae79697b | 1267 | |
e23c0ba3 ZW |
1268 | if (comp > 0) |
1269 | mn = md + 1; | |
1270 | else if (comp < 0) | |
1271 | mx = md; | |
1272 | else | |
1273 | { | |
1274 | if (input[opt_len] == '\0') | |
1275 | return md; | |
1276 | /* We were passed more text. If the option takes an argument, | |
1277 | we may match a later option or we may have been passed the | |
1278 | argument. The longest possible option match succeeds. | |
1279 | If the option takes no arguments we have not matched and | |
4a58aab6 | 1280 | continue the search (e.g. input="stdc++" match was "stdc"). */ |
e23c0ba3 ZW |
1281 | mn = md + 1; |
1282 | if (cl_options[md].msg) | |
1283 | { | |
1284 | /* Scan forwards. If we get an exact match, return it. | |
1285 | Otherwise, return the longest option-accepting match. | |
4a58aab6 | 1286 | This loops no more than twice with current options. */ |
e23c0ba3 | 1287 | mx = md; |
37b8524c | 1288 | for (; mn < (unsigned int) N_OPTS; mn++) |
e23c0ba3 ZW |
1289 | { |
1290 | opt_len = cl_options[mn].opt_len; | |
61d0346d | 1291 | if (memcmp (input, cl_options[mn].opt_text, opt_len)) |
e23c0ba3 ZW |
1292 | break; |
1293 | if (input[opt_len] == '\0') | |
1294 | return mn; | |
1295 | if (cl_options[mn].msg) | |
1296 | mx = mn; | |
1297 | } | |
1298 | return mx; | |
1299 | } | |
1300 | } | |
1301 | } | |
1302 | ||
1303 | return -1; | |
1304 | } | |
1305 | ||
6de1e2a9 ZW |
1306 | /* Handle one command-line option in (argc, argv). |
1307 | Can be called multiple times, to handle multiple sets of options. | |
1308 | Returns number of strings consumed. */ | |
2c0accc9 | 1309 | int |
09e77dee | 1310 | cpp_handle_option (pfile, argc, argv) |
6de1e2a9 ZW |
1311 | cpp_reader *pfile; |
1312 | int argc; | |
1313 | char **argv; | |
1314 | { | |
6de1e2a9 | 1315 | int i = 0; |
f8f769ea | 1316 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
6de1e2a9 | 1317 | |
373e2177 NB |
1318 | /* Interpret "-" or a non-option as a file name. */ |
1319 | if (argv[i][0] != '-' || argv[i][1] == '\0') | |
0b22d65c | 1320 | { |
373e2177 NB |
1321 | if (CPP_OPTION (pfile, in_fname) == NULL) |
1322 | CPP_OPTION (pfile, in_fname) = argv[i]; | |
1323 | else if (CPP_OPTION (pfile, out_fname) == NULL) | |
ae79697b | 1324 | CPP_OPTION (pfile, out_fname) = argv[i]; |
0b22d65c | 1325 | else |
bdee42b1 | 1326 | cpp_error (pfile, DL_ERROR, |
ebef4e8c | 1327 | "too many filenames. Type %s --help for usage info", |
373e2177 | 1328 | progname); |
0b22d65c ZW |
1329 | } |
1330 | else | |
e23c0ba3 ZW |
1331 | { |
1332 | enum opt_code opt_code; | |
1333 | int opt_index; | |
7ceb3598 | 1334 | const char *arg = 0; |
e23c0ba3 | 1335 | |
4a58aab6 | 1336 | /* Skip over '-'. */ |
e23c0ba3 ZW |
1337 | opt_index = parse_option (&argv[i][1]); |
1338 | if (opt_index < 0) | |
1339 | return i; | |
1340 | ||
1341 | opt_code = cl_options[opt_index].opt_code; | |
1342 | if (cl_options[opt_index].msg) | |
1343 | { | |
1344 | arg = &argv[i][cl_options[opt_index].opt_len + 1]; | |
09e77dee | 1345 | if (arg[0] == '\0') |
e23c0ba3 ZW |
1346 | { |
1347 | arg = argv[++i]; | |
1348 | if (!arg) | |
1349 | { | |
bdee42b1 | 1350 | cpp_error (pfile, DL_ERROR, |
ebef4e8c | 1351 | cl_options[opt_index].msg, argv[i - 1]); |
e23c0ba3 ZW |
1352 | return argc; |
1353 | } | |
1354 | } | |
1355 | } | |
ae79697b | 1356 | |
e23c0ba3 ZW |
1357 | switch (opt_code) |
1358 | { | |
4a58aab6 | 1359 | case N_OPTS: /* Shut GCC up. */ |
e23c0ba3 | 1360 | break; |
be768055 JJ |
1361 | case OPT_fno_operator_names: |
1362 | CPP_OPTION (pfile, operator_names) = 0; | |
1363 | break; | |
e23c0ba3 | 1364 | case OPT_fpreprocessed: |
ae79697b | 1365 | CPP_OPTION (pfile, preprocessed) = 1; |
e23c0ba3 ZW |
1366 | break; |
1367 | case OPT_fno_preprocessed: | |
ae79697b ZW |
1368 | CPP_OPTION (pfile, preprocessed) = 0; |
1369 | break; | |
1370 | case OPT_fshow_column: | |
1371 | CPP_OPTION (pfile, show_column) = 1; | |
1372 | break; | |
1373 | case OPT_fno_show_column: | |
1374 | CPP_OPTION (pfile, show_column) = 0; | |
e23c0ba3 | 1375 | break; |
6ab3e7dd NB |
1376 | case OPT_ftabstop: |
1377 | /* Silently ignore empty string, non-longs and silly values. */ | |
1378 | if (arg[0] != '\0') | |
1379 | { | |
1380 | char *endptr; | |
1381 | long tabstop = strtol (arg, &endptr, 10); | |
1382 | if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100) | |
1383 | CPP_OPTION (pfile, tabstop) = tabstop; | |
1384 | } | |
1385 | break; | |
e23c0ba3 | 1386 | case OPT_w: |
ae79697b | 1387 | CPP_OPTION (pfile, inhibit_warnings) = 1; |
e23c0ba3 | 1388 | break; |
e23c0ba3 ZW |
1389 | case OPT_h: |
1390 | case OPT__help: | |
1391 | print_help (); | |
5a9ee623 | 1392 | /* fall through */ |
91606ce2 | 1393 | case OPT_target__help: |
e23c0ba3 | 1394 | case OPT__version: |
5a9ee623 ZW |
1395 | /* Nothing to do for these cases, but we need to be sure |
1396 | help_only is set. */ | |
7e96d768 | 1397 | CPP_OPTION (pfile, help_only) = 1; |
cb773845 | 1398 | break; |
f4cdc368 ZW |
1399 | case OPT_v: |
1400 | CPP_OPTION (pfile, verbose) = 1; | |
e23c0ba3 | 1401 | break; |
f4cdc368 | 1402 | |
e23c0ba3 | 1403 | case OPT_C: |
ae79697b | 1404 | CPP_OPTION (pfile, discard_comments) = 0; |
e23c0ba3 | 1405 | break; |
477cdac7 JT |
1406 | case OPT_CC: |
1407 | CPP_OPTION (pfile, discard_comments) = 0; | |
1408 | CPP_OPTION (pfile, discard_comments_in_macro_exp) = 0; | |
1409 | break; | |
e23c0ba3 | 1410 | case OPT_P: |
ae79697b | 1411 | CPP_OPTION (pfile, no_line_commands) = 1; |
e23c0ba3 | 1412 | break; |
4a58aab6 | 1413 | case OPT_dollar: /* Don't include $ in identifiers. */ |
ae79697b | 1414 | CPP_OPTION (pfile, dollars_in_ident) = 0; |
e23c0ba3 ZW |
1415 | break; |
1416 | case OPT_H: | |
ae79697b | 1417 | CPP_OPTION (pfile, print_include_names) = 1; |
e23c0ba3 ZW |
1418 | break; |
1419 | case OPT_D: | |
f8f769ea | 1420 | new_pending_directive (pend, arg, cpp_define); |
e23c0ba3 ZW |
1421 | break; |
1422 | case OPT_pedantic_errors: | |
ae79697b | 1423 | CPP_OPTION (pfile, pedantic_errors) = 1; |
e23c0ba3 ZW |
1424 | /* fall through */ |
1425 | case OPT_pedantic: | |
df383483 | 1426 | CPP_OPTION (pfile, pedantic) = 1; |
2784528c | 1427 | CPP_OPTION (pfile, warn_endif_labels) = 1; |
e23c0ba3 | 1428 | break; |
e23c0ba3 | 1429 | case OPT_trigraphs: |
df383483 | 1430 | CPP_OPTION (pfile, trigraphs) = 1; |
e23c0ba3 | 1431 | break; |
e23c0ba3 | 1432 | case OPT_remap: |
ae79697b | 1433 | CPP_OPTION (pfile, remap) = 1; |
e23c0ba3 | 1434 | break; |
004cb263 NB |
1435 | case OPT_traditional_cpp: |
1436 | CPP_OPTION (pfile, traditional) = 1; | |
1437 | break; | |
e23c0ba3 | 1438 | case OPT_iprefix: |
ae79697b ZW |
1439 | CPP_OPTION (pfile, include_prefix) = arg; |
1440 | CPP_OPTION (pfile, include_prefix_len) = strlen (arg); | |
e23c0ba3 ZW |
1441 | break; |
1442 | case OPT_lang_c: | |
dd07b884 | 1443 | set_lang (pfile, CLK_GNUC89); |
e23c0ba3 | 1444 | break; |
e23c0ba3 | 1445 | case OPT_lang_cplusplus: |
dd07b884 | 1446 | set_lang (pfile, CLK_GNUCXX); |
e23c0ba3 | 1447 | break; |
f8f769ea | 1448 | case OPT_lang_objc: |
bdcae02b | 1449 | CPP_OPTION (pfile, objc) = 1; |
e23c0ba3 | 1450 | break; |
dd07b884 NB |
1451 | case OPT_lang_asm: |
1452 | set_lang (pfile, CLK_ASM); | |
e23c0ba3 | 1453 | break; |
dd07b884 NB |
1454 | case OPT_std_cplusplus98: |
1455 | set_lang (pfile, CLK_CXX98); | |
e23c0ba3 ZW |
1456 | break; |
1457 | case OPT_std_gnu89: | |
dd07b884 | 1458 | set_lang (pfile, CLK_GNUC89); |
e23c0ba3 ZW |
1459 | break; |
1460 | case OPT_std_gnu9x: | |
1461 | case OPT_std_gnu99: | |
dd07b884 | 1462 | set_lang (pfile, CLK_GNUC99); |
e23c0ba3 ZW |
1463 | break; |
1464 | case OPT_std_iso9899_199409: | |
dd07b884 NB |
1465 | set_lang (pfile, CLK_STDC94); |
1466 | break; | |
e23c0ba3 ZW |
1467 | case OPT_std_iso9899_1990: |
1468 | case OPT_std_c89: | |
9b55f29a | 1469 | case OPT_lang_c89: |
dd07b884 | 1470 | set_lang (pfile, CLK_STDC89); |
e23c0ba3 ZW |
1471 | break; |
1472 | case OPT_std_iso9899_199x: | |
1473 | case OPT_std_iso9899_1999: | |
1474 | case OPT_std_c9x: | |
1475 | case OPT_std_c99: | |
dd07b884 NB |
1476 | set_lang (pfile, CLK_STDC99); |
1477 | break; | |
1478 | case OPT_nostdinc: | |
1479 | /* -nostdinc causes no default include directories. | |
1480 | You must specify all include-file directories with -I. */ | |
1481 | CPP_OPTION (pfile, no_standard_includes) = 1; | |
1482 | break; | |
1483 | case OPT_nostdincplusplus: | |
ec5c56db | 1484 | /* -nostdinc++ causes no default C++-specific include directories. */ |
dd07b884 | 1485 | CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1; |
e23c0ba3 ZW |
1486 | break; |
1487 | case OPT_o: | |
373e2177 NB |
1488 | if (CPP_OPTION (pfile, out_fname) == NULL) |
1489 | CPP_OPTION (pfile, out_fname) = arg; | |
1490 | else | |
0b22d65c | 1491 | { |
bdee42b1 | 1492 | cpp_error (pfile, DL_ERROR, "output filename specified twice"); |
e23c0ba3 ZW |
1493 | return argc; |
1494 | } | |
e23c0ba3 ZW |
1495 | break; |
1496 | case OPT_d: | |
1497 | /* Args to -d specify what parts of macros to dump. | |
1498 | Silently ignore unrecognised options; they may | |
4a58aab6 | 1499 | be aimed at the compiler proper. */ |
df383483 | 1500 | { |
e23c0ba3 | 1501 | char c; |
ae79697b | 1502 | |
e23c0ba3 | 1503 | while ((c = *arg++) != '\0') |
df383483 KH |
1504 | switch (c) |
1505 | { | |
1506 | case 'M': | |
ae79697b | 1507 | CPP_OPTION (pfile, dump_macros) = dump_only; |
0b22d65c ZW |
1508 | break; |
1509 | case 'N': | |
ae79697b | 1510 | CPP_OPTION (pfile, dump_macros) = dump_names; |
0b22d65c ZW |
1511 | break; |
1512 | case 'D': | |
ae79697b | 1513 | CPP_OPTION (pfile, dump_macros) = dump_definitions; |
0b22d65c ZW |
1514 | break; |
1515 | case 'I': | |
ae79697b | 1516 | CPP_OPTION (pfile, dump_includes) = 1; |
0b22d65c ZW |
1517 | break; |
1518 | } | |
e23c0ba3 ZW |
1519 | } |
1520 | break; | |
96302433 | 1521 | |
e23c0ba3 | 1522 | case OPT_MG: |
ae79697b | 1523 | CPP_OPTION (pfile, print_deps_missing_files) = 1; |
e23c0ba3 ZW |
1524 | break; |
1525 | case OPT_M: | |
3ddbb8a9 NB |
1526 | /* When doing dependencies with -M or -MM, suppress normal |
1527 | preprocessed output, but still do -dM etc. as software | |
1528 | depends on this. Preprocessed output occurs if -MD, -MMD | |
1529 | or environment var dependency generation is used. */ | |
96302433 | 1530 | CPP_OPTION (pfile, print_deps) = 2; |
3ddbb8a9 | 1531 | CPP_OPTION (pfile, no_output) = 1; |
96302433 | 1532 | break; |
e23c0ba3 | 1533 | case OPT_MM: |
96302433 | 1534 | CPP_OPTION (pfile, print_deps) = 1; |
3ddbb8a9 | 1535 | CPP_OPTION (pfile, no_output) = 1; |
e23c0ba3 | 1536 | break; |
96302433 NB |
1537 | case OPT_MF: |
1538 | CPP_OPTION (pfile, deps_file) = arg; | |
1539 | break; | |
df383483 | 1540 | case OPT_MP: |
a5a4ce3c NB |
1541 | CPP_OPTION (pfile, deps_phony_targets) = 1; |
1542 | break; | |
f7114e17 | 1543 | case OPT_MQ: |
03b9ab42 | 1544 | case OPT_MT: |
f7114e17 NB |
1545 | /* Add a target. -MQ quotes for Make. */ |
1546 | deps_add_target (pfile->deps, arg, opt_code == OPT_MQ); | |
03b9ab42 NB |
1547 | break; |
1548 | ||
b3124fac NB |
1549 | case OPT_MD: |
1550 | CPP_OPTION (pfile, print_deps) = 2; | |
1551 | CPP_OPTION (pfile, deps_file) = arg; | |
1552 | break; | |
1553 | case OPT_MMD: | |
1554 | CPP_OPTION (pfile, print_deps) = 1; | |
1555 | CPP_OPTION (pfile, deps_file) = arg; | |
1556 | break; | |
1557 | ||
e23c0ba3 | 1558 | case OPT_A: |
e1e97c4f | 1559 | if (arg[0] == '-') |
0b22d65c | 1560 | { |
e1e97c4f NB |
1561 | /* -A with an argument beginning with '-' acts as |
1562 | #unassert on whatever immediately follows the '-'. | |
1563 | If "-" is the whole argument, we eliminate all | |
1564 | predefined macros and assertions, including those | |
1565 | that were specified earlier on the command line. | |
1566 | That way we can get rid of any that were passed | |
1567 | automatically in from GCC. */ | |
1568 | ||
1569 | if (arg[1] == '\0') | |
0b22d65c | 1570 | { |
29401c30 | 1571 | free_chain (pend->directive_head); |
e33f6253 NB |
1572 | pend->directive_head = NULL; |
1573 | pend->directive_tail = NULL; | |
0b22d65c | 1574 | } |
e1e97c4f | 1575 | else |
e33f6253 | 1576 | new_pending_directive (pend, arg + 1, cpp_unassert); |
6de1e2a9 | 1577 | } |
e1e97c4f | 1578 | else |
e33f6253 | 1579 | new_pending_directive (pend, arg, cpp_assert); |
e23c0ba3 ZW |
1580 | break; |
1581 | case OPT_U: | |
e33f6253 | 1582 | new_pending_directive (pend, arg, cpp_undef); |
e23c0ba3 ZW |
1583 | break; |
1584 | case OPT_I: /* Add directory to path for includes. */ | |
1585 | if (!strcmp (arg, "-")) | |
df383483 | 1586 | { |
e23c0ba3 ZW |
1587 | /* -I- means: |
1588 | Use the preceding -I directories for #include "..." | |
1589 | but not #include <...>. | |
1590 | Don't search the directory of the present file | |
1591 | for #include "...". (Note that -I. -I- is not the same as | |
1592 | the default setup; -I. uses the compiler's working dir.) */ | |
ae79697b | 1593 | if (! CPP_OPTION (pfile, ignore_srcdir)) |
e23c0ba3 | 1594 | { |
ae79697b ZW |
1595 | pend->quote_head = pend->brack_head; |
1596 | pend->quote_tail = pend->brack_tail; | |
1597 | pend->brack_head = 0; | |
1598 | pend->brack_tail = 0; | |
1599 | CPP_OPTION (pfile, ignore_srcdir) = 1; | |
e23c0ba3 ZW |
1600 | } |
1601 | else | |
1602 | { | |
bdee42b1 | 1603 | cpp_error (pfile, DL_ERROR, "-I- specified twice"); |
e23c0ba3 ZW |
1604 | return argc; |
1605 | } | |
df383483 KH |
1606 | } |
1607 | else | |
e33f6253 | 1608 | append_include_chain (pfile, xstrdup (arg), BRACKET, 0); |
e23c0ba3 ZW |
1609 | break; |
1610 | case OPT_isystem: | |
1611 | /* Add directory to beginning of system include path, as a system | |
4a58aab6 | 1612 | include directory. */ |
e33f6253 | 1613 | append_include_chain (pfile, xstrdup (arg), SYSTEM, 0); |
e23c0ba3 ZW |
1614 | break; |
1615 | case OPT_include: | |
e23c0ba3 ZW |
1616 | case OPT_imacros: |
1617 | { | |
1618 | struct pending_option *o = (struct pending_option *) | |
1619 | xmalloc (sizeof (struct pending_option)); | |
1620 | o->arg = arg; | |
1621 | o->next = NULL; | |
ae79697b | 1622 | |
d7bc7a98 NB |
1623 | if (opt_code == OPT_include) |
1624 | APPEND (pend, include, o); | |
1625 | else | |
1626 | APPEND (pend, imacros, o); | |
e23c0ba3 ZW |
1627 | } |
1628 | break; | |
1629 | case OPT_iwithprefix: | |
1630 | /* Add directory to end of path for includes, | |
1631 | with the default prefix at the front of its name. */ | |
1632 | /* fall through */ | |
1633 | case OPT_iwithprefixbefore: | |
1634 | /* Add directory to main path for includes, | |
1635 | with the default prefix at the front of its name. */ | |
1636 | { | |
1637 | char *fname; | |
1638 | int len; | |
ae79697b | 1639 | |
e23c0ba3 | 1640 | len = strlen (arg); |
ae79697b ZW |
1641 | |
1642 | if (CPP_OPTION (pfile, include_prefix) != 0) | |
e23c0ba3 | 1643 | { |
ae79697b ZW |
1644 | size_t ipl = CPP_OPTION (pfile, include_prefix_len); |
1645 | fname = xmalloc (ipl + len + 1); | |
1646 | memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl); | |
1647 | memcpy (fname + ipl, arg, len + 1); | |
e23c0ba3 | 1648 | } |
60893f43 | 1649 | else if (cpp_GCC_INCLUDE_DIR_len) |
e23c0ba3 | 1650 | { |
60893f43 ZW |
1651 | fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1); |
1652 | memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len); | |
1653 | memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1); | |
e23c0ba3 | 1654 | } |
60893f43 ZW |
1655 | else |
1656 | fname = xstrdup (arg); | |
ae79697b | 1657 | |
e33f6253 | 1658 | append_include_chain (pfile, fname, |
e23c0ba3 ZW |
1659 | opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0); |
1660 | } | |
1661 | break; | |
1662 | case OPT_idirafter: | |
1663 | /* Add directory to end of path for includes. */ | |
e33f6253 | 1664 | append_include_chain (pfile, xstrdup (arg), AFTER, 0); |
e23c0ba3 | 1665 | break; |
09e77dee ZW |
1666 | |
1667 | case OPT_Wall: | |
1668 | CPP_OPTION (pfile, warn_trigraphs) = 1; | |
1669 | CPP_OPTION (pfile, warn_comments) = 1; | |
1670 | break; | |
1671 | ||
1672 | case OPT_Wtraditional: | |
1673 | CPP_OPTION (pfile, warn_traditional) = 1; | |
1674 | break; | |
1675 | case OPT_Wno_traditional: | |
1676 | CPP_OPTION (pfile, warn_traditional) = 0; | |
1677 | break; | |
1678 | ||
1679 | case OPT_Wtrigraphs: | |
1680 | CPP_OPTION (pfile, warn_trigraphs) = 1; | |
1681 | break; | |
1682 | case OPT_Wno_trigraphs: | |
1683 | CPP_OPTION (pfile, warn_trigraphs) = 0; | |
1684 | break; | |
1685 | ||
1686 | case OPT_Wcomment: | |
1687 | case OPT_Wcomments: | |
1688 | CPP_OPTION (pfile, warn_comments) = 1; | |
1689 | break; | |
1690 | case OPT_Wno_comment: | |
1691 | case OPT_Wno_comments: | |
1692 | CPP_OPTION (pfile, warn_comments) = 0; | |
1693 | break; | |
1694 | ||
1695 | case OPT_Wundef: | |
1696 | CPP_OPTION (pfile, warn_undef) = 1; | |
1697 | break; | |
1698 | case OPT_Wno_undef: | |
1699 | CPP_OPTION (pfile, warn_undef) = 0; | |
1700 | break; | |
1701 | ||
1702 | case OPT_Wimport: | |
1703 | CPP_OPTION (pfile, warn_import) = 1; | |
1704 | break; | |
1705 | case OPT_Wno_import: | |
1706 | CPP_OPTION (pfile, warn_import) = 0; | |
1707 | break; | |
1708 | ||
1709 | case OPT_Wendif_labels: | |
1710 | CPP_OPTION (pfile, warn_endif_labels) = 1; | |
1711 | break; | |
1712 | case OPT_Wno_endif_labels: | |
1713 | CPP_OPTION (pfile, warn_endif_labels) = 0; | |
1714 | break; | |
1715 | ||
1716 | case OPT_Werror: | |
1717 | CPP_OPTION (pfile, warnings_are_errors) = 1; | |
1718 | break; | |
1719 | case OPT_Wno_error: | |
1720 | CPP_OPTION (pfile, warnings_are_errors) = 0; | |
1721 | break; | |
1722 | ||
1723 | case OPT_Wsystem_headers: | |
1724 | CPP_OPTION (pfile, warn_system_headers) = 1; | |
1725 | break; | |
1726 | case OPT_Wno_system_headers: | |
1727 | CPP_OPTION (pfile, warn_system_headers) = 0; | |
e23c0ba3 | 1728 | break; |
df383483 | 1729 | } |
e23c0ba3 | 1730 | } |
6de1e2a9 | 1731 | return i + 1; |
e23c0ba3 | 1732 | } |
0b22d65c | 1733 | |
6de1e2a9 ZW |
1734 | /* Handle command-line options in (argc, argv). |
1735 | Can be called multiple times, to handle multiple sets of options. | |
1736 | Returns if an unrecognized option is seen. | |
1737 | Returns number of strings consumed. */ | |
6de1e2a9 ZW |
1738 | int |
1739 | cpp_handle_options (pfile, argc, argv) | |
1740 | cpp_reader *pfile; | |
1741 | int argc; | |
1742 | char **argv; | |
1743 | { | |
1744 | int i; | |
1745 | int strings_processed; | |
e23c0ba3 | 1746 | |
6de1e2a9 ZW |
1747 | for (i = 0; i < argc; i += strings_processed) |
1748 | { | |
09e77dee | 1749 | strings_processed = cpp_handle_option (pfile, argc - i, argv + i); |
6de1e2a9 ZW |
1750 | if (strings_processed == 0) |
1751 | break; | |
1752 | } | |
96302433 | 1753 | |
6de1e2a9 ZW |
1754 | return i; |
1755 | } | |
1756 | ||
96302433 NB |
1757 | /* Extra processing when all options are parsed, after all calls to |
1758 | cpp_handle_option[s]. Consistency checks etc. */ | |
1759 | void | |
1760 | cpp_post_options (pfile) | |
1761 | cpp_reader *pfile; | |
1762 | { | |
373e2177 NB |
1763 | /* Canonicalize in_fname and out_fname. We guarantee they are not |
1764 | NULL, and that the empty string represents stdin / stdout. */ | |
1765 | if (CPP_OPTION (pfile, in_fname) == NULL | |
1766 | || !strcmp (CPP_OPTION (pfile, in_fname), "-")) | |
1767 | CPP_OPTION (pfile, in_fname) = ""; | |
1768 | ||
1769 | if (CPP_OPTION (pfile, out_fname) == NULL | |
1770 | || !strcmp (CPP_OPTION (pfile, out_fname), "-")) | |
1771 | CPP_OPTION (pfile, out_fname) = ""; | |
1772 | ||
96302433 NB |
1773 | /* -Wtraditional is not useful in C++ mode. */ |
1774 | if (CPP_OPTION (pfile, cplusplus)) | |
1775 | CPP_OPTION (pfile, warn_traditional) = 0; | |
1776 | ||
ceeedfc1 NB |
1777 | /* The compiler front ends override this, but I think this is the |
1778 | appropriate setting for the library. */ | |
cd7ab83f NB |
1779 | CPP_OPTION (pfile, warn_long_long) = (CPP_OPTION (pfile, pedantic) |
1780 | && !CPP_OPTION (pfile, c99)); | |
1781 | ||
6d4587f7 | 1782 | /* Permanently disable macro expansion if we are rescanning |
43612ffb | 1783 | preprocessed text. Read preprocesed source in ISO mode. */ |
6d4587f7 | 1784 | if (CPP_OPTION (pfile, preprocessed)) |
43612ffb NB |
1785 | { |
1786 | pfile->state.prevent_expansion = 1; | |
1787 | CPP_OPTION (pfile, traditional) = 0; | |
1788 | } | |
1789 | ||
1790 | /* Traditional CPP does not accurately track column information. */ | |
1791 | if (CPP_OPTION (pfile, traditional)) | |
1792 | CPP_OPTION (pfile, show_column) = 0; | |
6d4587f7 | 1793 | |
1651cc96 JJ |
1794 | /* -dM makes no normal output. This is set here so that -dM -dD |
1795 | works as expected. */ | |
1796 | if (CPP_OPTION (pfile, dump_macros) == dump_only) | |
1797 | CPP_OPTION (pfile, no_output) = 1; | |
1798 | ||
1799 | /* Disable -dD, -dN and -dI if we should make no normal output | |
1800 | (such as with -M). Allow -M -dM since some software relies on | |
1801 | this. */ | |
1802 | if (CPP_OPTION (pfile, no_output)) | |
1803 | { | |
1804 | if (CPP_OPTION (pfile, dump_macros) != dump_only) | |
1805 | CPP_OPTION (pfile, dump_macros) = dump_none; | |
1806 | CPP_OPTION (pfile, dump_includes) = 0; | |
1807 | } | |
1808 | ||
96302433 NB |
1809 | /* We need to do this after option processing and before |
1810 | cpp_start_read, as cppmain.c relies on the options->no_output to | |
1811 | set its callbacks correctly before calling cpp_start_read. */ | |
1812 | init_dependency_output (pfile); | |
1813 | ||
e582248c NB |
1814 | /* After checking the environment variables, check if -M or -MM has |
1815 | not been specified, but other -M options have. */ | |
1816 | if (CPP_OPTION (pfile, print_deps) == 0 && | |
1817 | (CPP_OPTION (pfile, print_deps_missing_files) | |
1818 | || CPP_OPTION (pfile, deps_file) | |
1819 | || CPP_OPTION (pfile, deps_phony_targets))) | |
bdee42b1 | 1820 | cpp_error (pfile, DL_ERROR, |
ebef4e8c | 1821 | "you must additionally specify either -M or -MM"); |
96302433 NB |
1822 | } |
1823 | ||
56cd5b95 NB |
1824 | /* Set up dependency-file output. On exit, if print_deps is non-zero |
1825 | then deps_file is not NULL; stdout is the empty string. */ | |
7ca3d2b1 NB |
1826 | static void |
1827 | init_dependency_output (pfile) | |
1828 | cpp_reader *pfile; | |
1829 | { | |
1830 | char *spec, *s, *output_file; | |
1831 | ||
1832 | /* Either of two environment variables can specify output of deps. | |
1833 | Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET", | |
1834 | where OUTPUT_FILE is the file to write deps info to | |
1835 | and DEPS_TARGET is the target to mention in the deps. */ | |
1836 | ||
1837 | if (CPP_OPTION (pfile, print_deps) == 0) | |
1838 | { | |
1839 | spec = getenv ("DEPENDENCIES_OUTPUT"); | |
1840 | if (spec) | |
1841 | CPP_OPTION (pfile, print_deps) = 1; | |
1842 | else | |
1843 | { | |
1844 | spec = getenv ("SUNPRO_DEPENDENCIES"); | |
1845 | if (spec) | |
1846 | CPP_OPTION (pfile, print_deps) = 2; | |
1847 | else | |
1848 | return; | |
1849 | } | |
1850 | ||
1851 | /* Find the space before the DEPS_TARGET, if there is one. */ | |
1852 | s = strchr (spec, ' '); | |
1853 | if (s) | |
1854 | { | |
1855 | /* Let the caller perform MAKE quoting. */ | |
1856 | deps_add_target (pfile->deps, s + 1, 0); | |
1857 | output_file = (char *) xmalloc (s - spec + 1); | |
1858 | memcpy (output_file, spec, s - spec); | |
1859 | output_file[s - spec] = 0; | |
1860 | } | |
1861 | else | |
1862 | output_file = spec; | |
1863 | ||
ab8e2228 NB |
1864 | /* Command line -MF overrides environment variables and default. */ |
1865 | if (CPP_OPTION (pfile, deps_file) == 0) | |
1866 | CPP_OPTION (pfile, deps_file) = output_file; | |
1867 | ||
7ca3d2b1 NB |
1868 | CPP_OPTION (pfile, print_deps_append) = 1; |
1869 | } | |
ab8e2228 | 1870 | else if (CPP_OPTION (pfile, deps_file) == 0) |
32810ba3 NB |
1871 | /* If -M or -MM was seen without -MF, default output to wherever |
1872 | was specified with -o. out_fname is non-NULL here. */ | |
ab8e2228 | 1873 | CPP_OPTION (pfile, deps_file) = CPP_OPTION (pfile, out_fname); |
7ca3d2b1 NB |
1874 | } |
1875 | ||
5d8ebbd8 | 1876 | /* Handle --help output. */ |
6de1e2a9 ZW |
1877 | static void |
1878 | print_help () | |
1879 | { | |
aaaf7848 | 1880 | /* To keep the lines from getting too long for some compilers, limit |
ec5c56db | 1881 | to about 500 characters (6 lines) per chunk. */ |
6de1e2a9 ZW |
1882 | fputs (_("\ |
1883 | Switches:\n\ | |
1884 | -include <file> Include the contents of <file> before other files\n\ | |
1885 | -imacros <file> Accept definition of macros in <file>\n\ | |
1886 | -iprefix <path> Specify <path> as a prefix for next two options\n\ | |
1887 | -iwithprefix <dir> Add <dir> to the end of the system include path\n\ | |
1888 | -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\ | |
1889 | -isystem <dir> Add <dir> to the start of the system include path\n\ | |
aaaf7848 DT |
1890 | "), stdout); |
1891 | fputs (_("\ | |
6de1e2a9 ZW |
1892 | -idirafter <dir> Add <dir> to the end of the system include path\n\ |
1893 | -I <dir> Add <dir> to the end of the main include path\n\ | |
e23c0ba3 | 1894 | -I- Fine-grained include path control; see info docs\n\ |
6de1e2a9 ZW |
1895 | -nostdinc Do not search system include directories\n\ |
1896 | (dirs specified with -isystem will still be used)\n\ | |
1897 | -nostdinc++ Do not search system include directories for C++\n\ | |
1898 | -o <file> Put output into <file>\n\ | |
aaaf7848 DT |
1899 | "), stdout); |
1900 | fputs (_("\ | |
041c3194 | 1901 | -pedantic Issue all warnings demanded by strict ISO C\n\ |
e23c0ba3 | 1902 | -pedantic-errors Issue -pedantic warnings as errors instead\n\ |
041c3194 | 1903 | -trigraphs Support ISO C trigraphs\n\ |
6de1e2a9 ZW |
1904 | -lang-c Assume that the input sources are in C\n\ |
1905 | -lang-c89 Assume that the input sources are in C89\n\ | |
aaaf7848 DT |
1906 | "), stdout); |
1907 | fputs (_("\ | |
f9a0e96c | 1908 | -lang-c++ Assume that the input sources are in C++\n\ |
6de1e2a9 | 1909 | -lang-objc Assume that the input sources are in ObjectiveC\n\ |
6de1e2a9 | 1910 | -lang-asm Assume that the input sources are in assembler\n\ |
aaaf7848 DT |
1911 | "), stdout); |
1912 | fputs (_("\ | |
6de1e2a9 | 1913 | -std=<std name> Specify the conformance standard; one of:\n\ |
916269ab UD |
1914 | gnu89, gnu99, c89, c99, iso9899:1990,\n\ |
1915 | iso9899:199409, iso9899:1999\n\ | |
6de1e2a9 ZW |
1916 | -w Inhibit warning messages\n\ |
1917 | -Wtrigraphs Warn if trigraphs are encountered\n\ | |
1918 | -Wno-trigraphs Do not warn about trigraphs\n\ | |
1919 | -Wcomment{s} Warn if one comment starts inside another\n\ | |
aaaf7848 DT |
1920 | "), stdout); |
1921 | fputs (_("\ | |
6de1e2a9 | 1922 | -Wno-comment{s} Do not warn about comments\n\ |
f9a0e96c ZW |
1923 | -Wtraditional Warn about features not present in traditional C\n\ |
1924 | -Wno-traditional Do not warn about traditional C\n\ | |
6de1e2a9 ZW |
1925 | -Wundef Warn if an undefined macro is used by #if\n\ |
1926 | -Wno-undef Do not warn about testing undefined macros\n\ | |
1927 | -Wimport Warn about the use of the #import directive\n\ | |
aaaf7848 DT |
1928 | "), stdout); |
1929 | fputs (_("\ | |
6de1e2a9 ZW |
1930 | -Wno-import Do not warn about the use of #import\n\ |
1931 | -Werror Treat all warnings as errors\n\ | |
1932 | -Wno-error Do not treat warnings as errors\n\ | |
317639a8 BC |
1933 | -Wsystem-headers Do not suppress warnings from system headers\n\ |
1934 | -Wno-system-headers Suppress warnings from system headers\n\ | |
6de1e2a9 | 1935 | -Wall Enable all preprocessor warnings\n\ |
aaaf7848 DT |
1936 | "), stdout); |
1937 | fputs (_("\ | |
317639a8 BC |
1938 | -M Generate make dependencies\n\ |
1939 | -MM As -M, but ignore system header files\n\ | |
576786b0 NB |
1940 | -MD Generate make dependencies and compile\n\ |
1941 | -MMD As -MD, but ignore system header files\n\ | |
96302433 | 1942 | -MF <file> Write dependency output to the given file\n\ |
6de1e2a9 | 1943 | -MG Treat missing header file as generated files\n\ |
96302433 NB |
1944 | "), stdout); |
1945 | fputs (_("\ | |
1946 | -MP Generate phony targets for all headers\n\ | |
1947 | -MQ <target> Add a MAKE-quoted target\n\ | |
1948 | -MT <target> Add an unquoted target\n\ | |
aaaf7848 DT |
1949 | "), stdout); |
1950 | fputs (_("\ | |
317639a8 BC |
1951 | -D<macro> Define a <macro> with string '1' as its value\n\ |
1952 | -D<macro>=<val> Define a <macro> with <val> as its value\n\ | |
576786b0 NB |
1953 | -A<question>=<answer> Assert the <answer> to <question>\n\ |
1954 | -A-<question>=<answer> Disable the <answer> to <question>\n\ | |
6de1e2a9 | 1955 | -U<macro> Undefine <macro> \n\ |
6de1e2a9 | 1956 | -v Display the version number\n\ |
aaaf7848 DT |
1957 | "), stdout); |
1958 | fputs (_("\ | |
317639a8 BC |
1959 | -H Print the name of header files as they are used\n\ |
1960 | -C Do not discard comments\n\ | |
6de1e2a9 ZW |
1961 | -dM Display a list of macro definitions active at end\n\ |
1962 | -dD Preserve macro definitions in output\n\ | |
1963 | -dN As -dD except that only the names are preserved\n\ | |
1964 | -dI Include #include directives in the output\n\ | |
317639a8 BC |
1965 | "), stdout); |
1966 | fputs (_("\ | |
3bce8a01 | 1967 | -fpreprocessed Treat the input file as already preprocessed\n\ |
6ab3e7dd | 1968 | -ftabstop=<number> Distance between tab stops for column reporting\n\ |
6de1e2a9 ZW |
1969 | -P Do not generate #line directives\n\ |
1970 | -$ Do not allow '$' in identifiers\n\ | |
576786b0 | 1971 | -remap Remap file names when including files\n\ |
e23c0ba3 | 1972 | --version Display version information\n\ |
6de1e2a9 ZW |
1973 | -h or --help Display this information\n\ |
1974 | "), stdout); | |
1975 | } |