Mercurial > hg > CbC > CbC_gcc
annotate gcc/incpath.c @ 67:f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
| author | nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Tue, 22 Mar 2011 17:18:12 +0900 |
| parents | 77e2b8dfacca |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* Set up combined include path chain for the preprocessor. |
| 2 Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2010 |
| 0 | 4 Free Software Foundation, Inc. |
| 5 | |
| 6 Broken out of cppinit.c and cppfiles.c and rewritten Mar 2003. | |
| 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 3, 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; see the file COPYING3. If not see | |
| 20 <http://www.gnu.org/licenses/>. */ | |
| 21 | |
| 22 #include "config.h" | |
| 23 #include "system.h" | |
| 24 #include "coretypes.h" | |
| 25 #include "machmode.h" | |
| 26 #include "target.h" | |
| 27 #include "tm.h" | |
| 28 #include "cpplib.h" | |
| 29 #include "prefix.h" | |
| 30 #include "intl.h" | |
| 31 #include "incpath.h" | |
| 32 #include "cppdefault.h" | |
| 33 | |
| 34 /* Microsoft Windows does not natively support inodes. | |
| 35 VMS has non-numeric inodes. */ | |
| 36 #ifdef VMS | |
| 37 # define INO_T_EQ(A, B) (!memcmp (&(A), &(B), sizeof (A))) | |
| 38 # define INO_T_COPY(DEST, SRC) memcpy(&(DEST), &(SRC), sizeof (SRC)) | |
| 39 #elif !defined (HOST_LACKS_INODE_NUMBERS) | |
| 40 # define INO_T_EQ(A, B) ((A) == (B)) | |
| 41 # define INO_T_COPY(DEST, SRC) (DEST) = (SRC) | |
| 42 #endif | |
| 43 | |
| 44 #if defined INO_T_EQ | |
| 45 #define DIRS_EQ(A, B) ((A)->dev == (B)->dev \ | |
| 46 && INO_T_EQ((A)->ino, (B)->ino)) | |
| 47 #else | |
| 48 #define DIRS_EQ(A, B) (!strcmp ((A)->canonical_name, (B)->canonical_name)) | |
| 49 #endif | |
| 50 | |
| 51 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 }; | |
| 52 | |
| 53 static void add_env_var_paths (const char *, int); | |
| 54 static void add_standard_paths (const char *, const char *, const char *, int); | |
| 55 static void free_path (struct cpp_dir *, int); | |
| 56 static void merge_include_chains (const char *, cpp_reader *, int); | |
| 57 static void add_sysroot_to_chain (const char *, int); | |
| 58 static struct cpp_dir *remove_duplicates (cpp_reader *, struct cpp_dir *, | |
| 59 struct cpp_dir *, | |
| 60 struct cpp_dir *, int); | |
| 61 | |
| 62 /* Include chains heads and tails. */ | |
| 63 static struct cpp_dir *heads[4]; | |
| 64 static struct cpp_dir *tails[4]; | |
| 65 static bool quote_ignores_source_dir; | |
| 66 enum { REASON_QUIET = 0, REASON_NOENT, REASON_DUP, REASON_DUP_SYS }; | |
| 67 | |
| 68 /* Free an element of the include chain, possibly giving a reason. */ | |
| 69 static void | |
| 70 free_path (struct cpp_dir *path, int reason) | |
| 71 { | |
| 72 switch (reason) | |
| 73 { | |
| 74 case REASON_DUP: | |
| 75 case REASON_DUP_SYS: | |
| 76 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), path->name); | |
| 77 if (reason == REASON_DUP_SYS) | |
| 78 fprintf (stderr, | |
| 79 _(" as it is a non-system directory that duplicates a system directory\n")); | |
| 80 break; | |
| 81 | |
| 82 case REASON_NOENT: | |
| 83 fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), | |
| 84 path->name); | |
| 85 break; | |
| 86 | |
| 87 case REASON_QUIET: | |
| 88 default: | |
| 89 break; | |
| 90 } | |
| 91 | |
| 92 free (path->name); | |
| 93 free (path); | |
| 94 } | |
| 95 | |
| 96 /* Read ENV_VAR for a PATH_SEPARATOR-separated list of file names; and | |
| 97 append all the names to the search path CHAIN. */ | |
| 98 static void | |
| 99 add_env_var_paths (const char *env_var, int chain) | |
| 100 { | |
| 101 char *p, *q, *path; | |
| 102 | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
103 q = getenv (env_var); |
| 0 | 104 |
| 105 if (!q) | |
| 106 return; | |
| 107 | |
| 108 for (p = q; *q; p = q + 1) | |
| 109 { | |
| 110 q = p; | |
| 111 while (*q != 0 && *q != PATH_SEPARATOR) | |
| 112 q++; | |
| 113 | |
| 114 if (p == q) | |
| 115 path = xstrdup ("."); | |
| 116 else | |
| 117 { | |
| 118 path = XNEWVEC (char, q - p + 1); | |
| 119 memcpy (path, p, q - p); | |
| 120 path[q - p] = '\0'; | |
| 121 } | |
| 122 | |
| 123 add_path (path, chain, chain == SYSTEM, false); | |
| 124 } | |
| 125 } | |
| 126 | |
| 127 /* Append the standard include chain defined in cppdefault.c. */ | |
| 128 static void | |
| 129 add_standard_paths (const char *sysroot, const char *iprefix, | |
| 130 const char *imultilib, int cxx_stdinc) | |
| 131 { | |
| 132 const struct default_include *p; | |
| 133 int relocated = cpp_relocated(); | |
| 134 size_t len; | |
| 135 | |
| 136 if (iprefix && (len = cpp_GCC_INCLUDE_DIR_len) != 0) | |
| 137 { | |
| 138 /* Look for directories that start with the standard prefix. | |
| 139 "Translate" them, i.e. replace /usr/local/lib/gcc... with | |
| 140 IPREFIX and search them first. */ | |
| 141 for (p = cpp_include_defaults; p->fname; p++) | |
| 142 { | |
| 143 if (!p->cplusplus || cxx_stdinc) | |
| 144 { | |
| 145 /* Should we be translating sysrooted dirs too? Assume | |
| 146 that iprefix and sysroot are mutually exclusive, for | |
| 147 now. */ | |
| 148 if (sysroot && p->add_sysroot) | |
| 149 continue; | |
| 150 if (!strncmp (p->fname, cpp_GCC_INCLUDE_DIR, len)) | |
| 151 { | |
| 152 char *str = concat (iprefix, p->fname + len, NULL); | |
| 153 if (p->multilib && imultilib) | |
| 154 str = concat (str, dir_separator_str, imultilib, NULL); | |
| 155 add_path (str, SYSTEM, p->cxx_aware, false); | |
| 156 } | |
| 157 } | |
| 158 } | |
| 159 } | |
| 160 | |
| 161 for (p = cpp_include_defaults; p->fname; p++) | |
| 162 { | |
| 163 if (!p->cplusplus || cxx_stdinc) | |
| 164 { | |
| 165 char *str; | |
| 166 | |
| 167 /* Should this directory start with the sysroot? */ | |
| 168 if (sysroot && p->add_sysroot) | |
| 169 str = concat (sysroot, p->fname, NULL); | |
| 170 else if (!p->add_sysroot && relocated | |
| 171 && strncmp (p->fname, cpp_PREFIX, cpp_PREFIX_len) == 0) | |
| 172 { | |
| 173 static const char *relocated_prefix; | |
|
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77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
174 /* If this path starts with the configure-time prefix, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
175 but the compiler has been relocated, replace it |
| 0 | 176 with the run-time prefix. The run-time exec prefix |
| 177 is GCC_EXEC_PREFIX. Compute the path from there back | |
| 178 to the toplevel prefix. */ | |
| 179 if (!relocated_prefix) | |
| 180 { | |
| 181 char *dummy; | |
| 182 /* Make relative prefix expects the first argument | |
| 183 to be a program, not a directory. */ | |
| 184 dummy = concat (gcc_exec_prefix, "dummy", NULL); | |
|
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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185 relocated_prefix |
| 0 | 186 = make_relative_prefix (dummy, |
| 187 cpp_EXEC_PREFIX, | |
| 188 cpp_PREFIX); | |
| 189 } | |
| 190 str = concat (relocated_prefix, | |
|
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191 p->fname + cpp_PREFIX_len, |
| 0 | 192 NULL); |
| 193 str = update_path (str, p->component); | |
| 194 } | |
| 195 else | |
| 196 str = update_path (p->fname, p->component); | |
| 197 | |
| 198 if (p->multilib && imultilib) | |
| 199 str = concat (str, dir_separator_str, imultilib, NULL); | |
| 200 | |
| 201 add_path (str, SYSTEM, p->cxx_aware, false); | |
| 202 } | |
| 203 } | |
| 204 } | |
| 205 | |
| 206 /* For each duplicate path in chain HEAD, keep just the first one. | |
| 207 Remove each path in chain HEAD that also exists in chain SYSTEM. | |
| 208 Set the NEXT pointer of the last path in the resulting chain to | |
| 209 JOIN, unless it duplicates JOIN in which case the last path is | |
| 210 removed. Return the head of the resulting chain. Any of HEAD, | |
| 211 JOIN and SYSTEM can be NULL. */ | |
| 212 | |
| 213 static struct cpp_dir * | |
| 214 remove_duplicates (cpp_reader *pfile, struct cpp_dir *head, | |
| 215 struct cpp_dir *system, struct cpp_dir *join, | |
| 216 int verbose) | |
| 217 { | |
| 218 struct cpp_dir **pcur, *tmp, *cur; | |
| 219 struct stat st; | |
| 220 | |
| 221 for (pcur = &head; *pcur; ) | |
| 222 { | |
| 223 int reason = REASON_QUIET; | |
| 224 | |
| 225 cur = *pcur; | |
| 226 | |
| 227 if (stat (cur->name, &st)) | |
| 228 { | |
| 229 /* Dirs that don't exist are silently ignored, unless verbose. */ | |
| 230 if (errno != ENOENT) | |
| 231 cpp_errno (pfile, CPP_DL_ERROR, cur->name); | |
| 232 else | |
| 233 { | |
| 234 /* If -Wmissing-include-dirs is given, warn. */ | |
| 235 cpp_options *opts = cpp_get_options (pfile); | |
| 236 if (opts->warn_missing_include_dirs && cur->user_supplied_p) | |
| 237 cpp_errno (pfile, CPP_DL_WARNING, cur->name); | |
| 238 reason = REASON_NOENT; | |
| 239 } | |
| 240 } | |
| 241 else if (!S_ISDIR (st.st_mode)) | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
242 cpp_error_with_line (pfile, CPP_DL_WARNING, 0, 0, |
| 0 | 243 "%s: not a directory", cur->name); |
| 244 else | |
| 245 { | |
| 246 #if defined (INO_T_COPY) | |
| 247 INO_T_COPY (cur->ino, st.st_ino); | |
| 248 cur->dev = st.st_dev; | |
| 249 #endif | |
| 250 | |
| 251 /* Remove this one if it is in the system chain. */ | |
| 252 reason = REASON_DUP_SYS; | |
| 253 for (tmp = system; tmp; tmp = tmp->next) | |
| 254 if (DIRS_EQ (tmp, cur) && cur->construct == tmp->construct) | |
| 255 break; | |
| 256 | |
| 257 if (!tmp) | |
| 258 { | |
| 259 /* Duplicate of something earlier in the same chain? */ | |
| 260 reason = REASON_DUP; | |
| 261 for (tmp = head; tmp != cur; tmp = tmp->next) | |
| 262 if (DIRS_EQ (cur, tmp) && cur->construct == tmp->construct) | |
| 263 break; | |
| 264 | |
| 265 if (tmp == cur | |
| 266 /* Last in the chain and duplicate of JOIN? */ | |
| 267 && !(cur->next == NULL && join | |
| 268 && DIRS_EQ (cur, join) | |
| 269 && cur->construct == join->construct)) | |
| 270 { | |
| 271 /* Unique, so keep this directory. */ | |
| 272 pcur = &cur->next; | |
| 273 continue; | |
| 274 } | |
| 275 } | |
| 276 } | |
| 277 | |
| 278 /* Remove this entry from the chain. */ | |
| 279 *pcur = cur->next; | |
| 280 free_path (cur, verbose ? reason: REASON_QUIET); | |
| 281 } | |
| 282 | |
| 283 *pcur = join; | |
| 284 return head; | |
| 285 } | |
| 286 | |
| 287 /* Add SYSROOT to any user-supplied paths in CHAIN starting with | |
| 288 "=". */ | |
| 289 | |
| 290 static void | |
| 291 add_sysroot_to_chain (const char *sysroot, int chain) | |
| 292 { | |
| 293 struct cpp_dir *p; | |
| 294 | |
| 295 for (p = heads[chain]; p != NULL; p = p->next) | |
| 296 if (p->name[0] == '=' && p->user_supplied_p) | |
| 297 p->name = concat (sysroot, p->name + 1, NULL); | |
| 298 } | |
| 299 | |
| 300 /* Merge the four include chains together in the order quote, bracket, | |
| 301 system, after. Remove duplicate dirs (determined in | |
| 302 system-specific manner). | |
| 303 | |
| 304 We can't just merge the lists and then uniquify them because then | |
| 305 we may lose directories from the <> search path that should be | |
| 306 there; consider -iquote foo -iquote bar -Ifoo -Iquux. It is | |
| 307 however safe to treat -iquote bar -iquote foo -Ifoo -Iquux as if | |
| 308 written -iquote bar -Ifoo -Iquux. */ | |
| 309 | |
| 310 static void | |
| 311 merge_include_chains (const char *sysroot, cpp_reader *pfile, int verbose) | |
| 312 { | |
| 313 /* Add the sysroot to user-supplied paths starting with "=". */ | |
| 314 if (sysroot) | |
| 315 { | |
| 316 add_sysroot_to_chain (sysroot, QUOTE); | |
| 317 add_sysroot_to_chain (sysroot, BRACKET); | |
| 318 add_sysroot_to_chain (sysroot, SYSTEM); | |
| 319 add_sysroot_to_chain (sysroot, AFTER); | |
| 320 } | |
| 321 | |
| 322 /* Join the SYSTEM and AFTER chains. Remove duplicates in the | |
| 323 resulting SYSTEM chain. */ | |
| 324 if (heads[SYSTEM]) | |
| 325 tails[SYSTEM]->next = heads[AFTER]; | |
| 326 else | |
| 327 heads[SYSTEM] = heads[AFTER]; | |
| 328 heads[SYSTEM] = remove_duplicates (pfile, heads[SYSTEM], 0, 0, verbose); | |
| 329 | |
| 330 /* Remove duplicates from BRACKET that are in itself or SYSTEM, and | |
| 331 join it to SYSTEM. */ | |
| 332 heads[BRACKET] = remove_duplicates (pfile, heads[BRACKET], heads[SYSTEM], | |
| 333 heads[SYSTEM], verbose); | |
| 334 | |
| 335 /* Remove duplicates from QUOTE that are in itself or SYSTEM, and | |
| 336 join it to BRACKET. */ | |
| 337 heads[QUOTE] = remove_duplicates (pfile, heads[QUOTE], heads[SYSTEM], | |
| 338 heads[BRACKET], verbose); | |
| 339 | |
| 340 /* If verbose, print the list of dirs to search. */ | |
| 341 if (verbose) | |
| 342 { | |
| 343 struct cpp_dir *p; | |
| 344 | |
| 345 fprintf (stderr, _("#include \"...\" search starts here:\n")); | |
| 346 for (p = heads[QUOTE];; p = p->next) | |
| 347 { | |
| 348 if (p == heads[BRACKET]) | |
| 349 fprintf (stderr, _("#include <...> search starts here:\n")); | |
| 350 if (!p) | |
| 351 break; | |
| 352 fprintf (stderr, " %s\n", p->name); | |
| 353 } | |
| 354 fprintf (stderr, _("End of search list.\n")); | |
| 355 } | |
| 356 } | |
| 357 | |
| 358 /* Use given -I paths for #include "..." but not #include <...>, and | |
| 359 don't search the directory of the present file for #include "...". | |
| 360 (Note that -I. -I- is not the same as the default setup; -I. uses | |
| 361 the compiler's working dir.) */ | |
| 362 void | |
| 363 split_quote_chain (void) | |
| 364 { | |
| 365 heads[QUOTE] = heads[BRACKET]; | |
| 366 tails[QUOTE] = tails[BRACKET]; | |
| 367 heads[BRACKET] = NULL; | |
| 368 tails[BRACKET] = NULL; | |
| 369 /* This is NOT redundant. */ | |
| 370 quote_ignores_source_dir = true; | |
| 371 } | |
| 372 | |
| 373 /* Add P to the chain specified by CHAIN. */ | |
| 374 | |
| 375 void | |
| 376 add_cpp_dir_path (cpp_dir *p, int chain) | |
| 377 { | |
| 378 if (tails[chain]) | |
| 379 tails[chain]->next = p; | |
| 380 else | |
| 381 heads[chain] = p; | |
| 382 tails[chain] = p; | |
| 383 } | |
| 384 | |
| 385 /* Add PATH to the include chain CHAIN. PATH must be malloc-ed and | |
| 386 NUL-terminated. */ | |
| 387 void | |
| 388 add_path (char *path, int chain, int cxx_aware, bool user_supplied_p) | |
| 389 { | |
| 390 cpp_dir *p; | |
| 391 | |
| 392 #if defined (HAVE_DOS_BASED_FILE_SYSTEM) | |
| 393 /* Remove unnecessary trailing slashes. On some versions of MS | |
| 394 Windows, trailing _forward_ slashes cause no problems for stat(). | |
| 395 On newer versions, stat() does not recognize a directory that ends | |
| 396 in a '\\' or '/', unless it is a drive root dir, such as "c:/", | |
| 397 where it is obligatory. */ | |
| 398 int pathlen = strlen (path); | |
| 399 char* end = path + pathlen - 1; | |
| 400 /* Preserve the lead '/' or lead "c:/". */ | |
| 401 char* start = path + (pathlen > 2 && path[1] == ':' ? 3 : 1); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
402 |
| 0 | 403 for (; end > start && IS_DIR_SEPARATOR (*end); end--) |
| 404 *end = 0; | |
| 405 #endif | |
| 406 | |
| 407 p = XNEW (cpp_dir); | |
| 408 p->next = NULL; | |
| 409 p->name = path; | |
| 410 #ifndef INO_T_EQ | |
| 411 p->canonical_name = lrealpath (path); | |
| 412 #endif | |
| 413 if (chain == SYSTEM || chain == AFTER) | |
| 414 p->sysp = 1 + !cxx_aware; | |
| 415 else | |
| 416 p->sysp = 0; | |
| 417 p->construct = 0; | |
| 418 p->user_supplied_p = user_supplied_p; | |
| 419 | |
| 420 add_cpp_dir_path (p, chain); | |
| 421 } | |
| 422 | |
| 423 /* Exported function to handle include chain merging, duplicate | |
| 424 removal, and registration with cpplib. */ | |
| 425 void | |
| 426 register_include_chains (cpp_reader *pfile, const char *sysroot, | |
| 427 const char *iprefix, const char *imultilib, | |
| 428 int stdinc, int cxx_stdinc, int verbose) | |
| 429 { | |
| 430 static const char *const lang_env_vars[] = | |
| 431 { "C_INCLUDE_PATH", "CPLUS_INCLUDE_PATH", | |
| 432 "OBJC_INCLUDE_PATH", "OBJCPLUS_INCLUDE_PATH" }; | |
| 433 cpp_options *cpp_opts = cpp_get_options (pfile); | |
| 434 size_t idx = (cpp_opts->objc ? 2: 0); | |
| 435 | |
| 436 if (cpp_opts->cplusplus) | |
| 437 idx++; | |
| 438 else | |
| 439 cxx_stdinc = false; | |
| 440 | |
| 441 /* CPATH and language-dependent environment variables may add to the | |
| 442 include chain. */ | |
| 443 add_env_var_paths ("CPATH", BRACKET); | |
| 444 add_env_var_paths (lang_env_vars[idx], SYSTEM); | |
| 445 | |
| 446 target_c_incpath.extra_pre_includes (sysroot, iprefix, stdinc); | |
| 447 | |
| 448 /* Finally chain on the standard directories. */ | |
| 449 if (stdinc) | |
| 450 add_standard_paths (sysroot, iprefix, imultilib, cxx_stdinc); | |
| 451 | |
| 452 target_c_incpath.extra_includes (sysroot, iprefix, stdinc); | |
| 453 | |
| 454 merge_include_chains (sysroot, pfile, verbose); | |
| 455 | |
| 456 cpp_set_include_chains (pfile, heads[QUOTE], heads[BRACKET], | |
| 457 quote_ignores_source_dir); | |
| 458 } | |
| 459 #if !(defined TARGET_EXTRA_INCLUDES) || !(defined TARGET_EXTRA_PRE_INCLUDES) | |
| 460 static void hook_void_charptr_charptr_int (const char *sysroot ATTRIBUTE_UNUSED, | |
| 461 const char *iprefix ATTRIBUTE_UNUSED, | |
| 462 int stdinc ATTRIBUTE_UNUSED) | |
| 463 { | |
| 464 } | |
| 465 #endif | |
| 466 | |
| 467 #ifndef TARGET_EXTRA_INCLUDES | |
| 468 #define TARGET_EXTRA_INCLUDES hook_void_charptr_charptr_int | |
| 469 #endif | |
| 470 #ifndef TARGET_EXTRA_PRE_INCLUDES | |
| 471 #define TARGET_EXTRA_PRE_INCLUDES hook_void_charptr_charptr_int | |
| 472 #endif | |
| 473 | |
| 474 struct target_c_incpath_s target_c_incpath = { TARGET_EXTRA_PRE_INCLUDES, TARGET_EXTRA_INCLUDES }; | |
| 475 |