diff options
Diffstat (limited to 'gcc-4.2.1/gcc/c-incpath.c')
| -rw-r--r-- | gcc-4.2.1/gcc/c-incpath.c | 417 |
1 files changed, 0 insertions, 417 deletions
diff --git a/gcc-4.2.1/gcc/c-incpath.c b/gcc-4.2.1/gcc/c-incpath.c deleted file mode 100644 index 0e534dd23..000000000 --- a/gcc-4.2.1/gcc/c-incpath.c +++ /dev/null @@ -1,417 +0,0 @@ -/* Set up combined include path chain for the preprocessor. - Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, - 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 - Free Software Foundation, Inc. - - Broken out of cppinit.c and cppfiles.c and rewritten Mar 2003. - -This program is free software; you can redistribute it and/or modify it -under the terms of the GNU General Public License as published by the -Free Software Foundation; either version 2, or (at your option) any -later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ - -#include "config.h" -#include "system.h" -#include "coretypes.h" -#include "machmode.h" -#include "target.h" -#include "tm.h" -#include "cpplib.h" -#include "prefix.h" -#include "intl.h" -#include "c-incpath.h" -#include "cppdefault.h" - -/* Windows does not natively support inodes, and neither does MSDOS. - Cygwin's emulation can generate non-unique inodes, so don't use it. - VMS has non-numeric inodes. */ -#ifdef VMS -# define INO_T_EQ(A, B) (!memcmp (&(A), &(B), sizeof (A))) -# define INO_T_COPY(DEST, SRC) memcpy(&(DEST), &(SRC), sizeof (SRC)) -#else -# if (defined _WIN32 && !defined (_UWIN)) || defined __MSDOS__ -# define INO_T_EQ(A, B) 0 -# else -# define INO_T_EQ(A, B) ((A) == (B)) -# endif -# define INO_T_COPY(DEST, SRC) (DEST) = (SRC) -#endif - -static const char dir_separator_str[] = { DIR_SEPARATOR, 0 }; - -static void add_env_var_paths (const char *, int); -static void add_standard_paths (const char *, const char *, const char *, int); -static void free_path (struct cpp_dir *, int); -static void merge_include_chains (cpp_reader *, int); -static struct cpp_dir *remove_duplicates (cpp_reader *, struct cpp_dir *, - struct cpp_dir *, - struct cpp_dir *, int); - -/* Include chains heads and tails. */ -static struct cpp_dir *heads[4]; -static struct cpp_dir *tails[4]; -static bool quote_ignores_source_dir; -enum { REASON_QUIET = 0, REASON_NOENT, REASON_DUP, REASON_DUP_SYS }; - -/* Free an element of the include chain, possibly giving a reason. */ -static void -free_path (struct cpp_dir *path, int reason) -{ - switch (reason) - { - case REASON_DUP: - case REASON_DUP_SYS: - fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), path->name); - if (reason == REASON_DUP_SYS) - fprintf (stderr, - _(" as it is a non-system directory that duplicates a system directory\n")); - break; - - case REASON_NOENT: - fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), - path->name); - break; - - case REASON_QUIET: - default: - break; - } - - free (path->name); - free (path); -} - -/* Read ENV_VAR for a PATH_SEPARATOR-separated list of file names; and - append all the names to the search path CHAIN. */ -static void -add_env_var_paths (const char *env_var, int chain) -{ - char *p, *q, *path; - - GET_ENVIRONMENT (q, env_var); - - if (!q) - return; - - for (p = q; *q; p = q + 1) - { - q = p; - while (*q != 0 && *q != PATH_SEPARATOR) - q++; - - if (p == q) - path = xstrdup ("."); - else - { - path = XNEWVEC (char, q - p + 1); - memcpy (path, p, q - p); - path[q - p] = '\0'; - } - - add_path (path, chain, chain == SYSTEM, false); - } -} - -/* Append the standard include chain defined in cppdefault.c. */ -static void -add_standard_paths (const char *sysroot, const char *iprefix, - const char *imultilib, int cxx_stdinc) -{ - const struct default_include *p; - size_t len; - - if (iprefix && (len = cpp_GCC_INCLUDE_DIR_len) != 0) - { - /* Look for directories that start with the standard prefix. - "Translate" them, i.e. replace /usr/local/lib/gcc... with - IPREFIX and search them first. */ - for (p = cpp_include_defaults; p->fname; p++) - { - if (!p->cplusplus || cxx_stdinc) - { - /* Should we be translating sysrooted dirs too? Assume - that iprefix and sysroot are mutually exclusive, for - now. */ - if (sysroot && p->add_sysroot) - continue; - if (!strncmp (p->fname, cpp_GCC_INCLUDE_DIR, len)) - { - char *str = concat (iprefix, p->fname + len, NULL); - if (p->multilib && imultilib) - str = concat (str, dir_separator_str, imultilib, NULL); - add_path (str, SYSTEM, p->cxx_aware, false); - } - } - } - } - - for (p = cpp_include_defaults; p->fname; p++) - { - if (!p->cplusplus || cxx_stdinc) - { - char *str; - - /* Should this directory start with the sysroot? */ - if (sysroot && p->add_sysroot) - str = concat (sysroot, p->fname, NULL); - else - str = update_path (p->fname, p->component); - - if (p->multilib && imultilib) - str = concat (str, dir_separator_str, imultilib, NULL); - - add_path (str, SYSTEM, p->cxx_aware, false); - } - } -} - -/* For each duplicate path in chain HEAD, keep just the first one. - Remove each path in chain HEAD that also exists in chain SYSTEM. - Set the NEXT pointer of the last path in the resulting chain to - JOIN, unless it duplicates JOIN in which case the last path is - removed. Return the head of the resulting chain. Any of HEAD, - JOIN and SYSTEM can be NULL. */ - -static struct cpp_dir * -remove_duplicates (cpp_reader *pfile, struct cpp_dir *head, - struct cpp_dir *system, struct cpp_dir *join, - int verbose) -{ - struct cpp_dir **pcur, *tmp, *cur; - struct stat st; - - for (pcur = &head; *pcur; ) - { - int reason = REASON_QUIET; - - cur = *pcur; - - if (stat (cur->name, &st)) - { - /* Dirs that don't exist are silently ignored, unless verbose. */ - if (errno != ENOENT) - cpp_errno (pfile, CPP_DL_ERROR, cur->name); - else - { - /* If -Wmissing-include-dirs is given, warn. */ - cpp_options *opts = cpp_get_options (pfile); - if (opts->warn_missing_include_dirs && cur->user_supplied_p) - cpp_errno (pfile, CPP_DL_WARNING, cur->name); - reason = REASON_NOENT; - } - } - else if (!S_ISDIR (st.st_mode)) - cpp_error_with_line (pfile, CPP_DL_ERROR, 0, 0, - "%s: not a directory", cur->name); - else - { - INO_T_COPY (cur->ino, st.st_ino); - cur->dev = st.st_dev; - - /* Remove this one if it is in the system chain. */ - reason = REASON_DUP_SYS; - for (tmp = system; tmp; tmp = tmp->next) - if (INO_T_EQ (tmp->ino, cur->ino) && tmp->dev == cur->dev - && cur->construct == tmp->construct) - break; - - if (!tmp) - { - /* Duplicate of something earlier in the same chain? */ - reason = REASON_DUP; - for (tmp = head; tmp != cur; tmp = tmp->next) - if (INO_T_EQ (cur->ino, tmp->ino) && cur->dev == tmp->dev - && cur->construct == tmp->construct) - break; - - if (tmp == cur - /* Last in the chain and duplicate of JOIN? */ - && !(cur->next == NULL && join - && INO_T_EQ (cur->ino, join->ino) - && cur->dev == join->dev - && cur->construct == join->construct)) - { - /* Unique, so keep this directory. */ - pcur = &cur->next; - continue; - } - } - } - - /* Remove this entry from the chain. */ - *pcur = cur->next; - free_path (cur, verbose ? reason: REASON_QUIET); - } - - *pcur = join; - return head; -} - -/* Merge the four include chains together in the order quote, bracket, - system, after. Remove duplicate dirs (as determined by - INO_T_EQ()). - - We can't just merge the lists and then uniquify them because then - we may lose directories from the <> search path that should be - there; consider -iquote foo -iquote bar -Ifoo -Iquux. It is - however safe to treat -iquote bar -iquote foo -Ifoo -Iquux as if - written -iquote bar -Ifoo -Iquux. */ - -static void -merge_include_chains (cpp_reader *pfile, int verbose) -{ - /* Join the SYSTEM and AFTER chains. Remove duplicates in the - resulting SYSTEM chain. */ - if (heads[SYSTEM]) - tails[SYSTEM]->next = heads[AFTER]; - else - heads[SYSTEM] = heads[AFTER]; - heads[SYSTEM] = remove_duplicates (pfile, heads[SYSTEM], 0, 0, verbose); - - /* Remove duplicates from BRACKET that are in itself or SYSTEM, and - join it to SYSTEM. */ - heads[BRACKET] = remove_duplicates (pfile, heads[BRACKET], heads[SYSTEM], - heads[SYSTEM], verbose); - - /* Remove duplicates from QUOTE that are in itself or SYSTEM, and - join it to BRACKET. */ - heads[QUOTE] = remove_duplicates (pfile, heads[QUOTE], heads[SYSTEM], - heads[BRACKET], verbose); - - /* If verbose, print the list of dirs to search. */ - if (verbose) - { - struct cpp_dir *p; - - fprintf (stderr, _("#include \"...\" search starts here:\n")); - for (p = heads[QUOTE];; p = p->next) - { - if (p == heads[BRACKET]) - fprintf (stderr, _("#include <...> search starts here:\n")); - if (!p) - break; - fprintf (stderr, " %s\n", p->name); - } - fprintf (stderr, _("End of search list.\n")); - } -} - -/* Use given -I paths for #include "..." but not #include <...>, and - don't search the directory of the present file for #include "...". - (Note that -I. -I- is not the same as the default setup; -I. uses - the compiler's working dir.) */ -void -split_quote_chain (void) -{ - heads[QUOTE] = heads[BRACKET]; - tails[QUOTE] = tails[BRACKET]; - heads[BRACKET] = NULL; - tails[BRACKET] = NULL; - /* This is NOT redundant. */ - quote_ignores_source_dir = true; -} - -/* Add P to the chain specified by CHAIN. */ - -void -add_cpp_dir_path (cpp_dir *p, int chain) -{ - if (tails[chain]) - tails[chain]->next = p; - else - heads[chain] = p; - tails[chain] = p; -} - -/* Add PATH to the include chain CHAIN. PATH must be malloc-ed and - NUL-terminated. */ -void -add_path (char *path, int chain, int cxx_aware, bool user_supplied_p) -{ - cpp_dir *p; - -#if defined (HAVE_DOS_BASED_FILE_SYSTEM) - /* Convert all backslashes to slashes. The native CRT stat() - function does not recognize a directory that ends in a backslash - (unless it is a drive root dir, such "c:\"). Forward slashes, - trailing or otherwise, cause no problems for stat(). */ - char* c; - for (c = path; *c; c++) - if (*c == '\\') *c = '/'; -#endif - - p = XNEW (cpp_dir); - p->next = NULL; - p->name = path; - if (chain == SYSTEM || chain == AFTER) - p->sysp = 1 + !cxx_aware; - else - p->sysp = 0; - p->construct = 0; - p->user_supplied_p = user_supplied_p; - - add_cpp_dir_path (p, chain); -} - -/* Exported function to handle include chain merging, duplicate - removal, and registration with cpplib. */ -void -register_include_chains (cpp_reader *pfile, const char *sysroot, - const char *iprefix, const char *imultilib, - int stdinc, int cxx_stdinc, int verbose) -{ - static const char *const lang_env_vars[] = - { "C_INCLUDE_PATH", "CPLUS_INCLUDE_PATH", - "OBJC_INCLUDE_PATH", "OBJCPLUS_INCLUDE_PATH" }; - cpp_options *cpp_opts = cpp_get_options (pfile); - size_t idx = (cpp_opts->objc ? 2: 0); - - if (cpp_opts->cplusplus) - idx++; - else - cxx_stdinc = false; - - /* CPATH and language-dependent environment variables may add to the - include chain. */ - add_env_var_paths ("CPATH", BRACKET); - add_env_var_paths (lang_env_vars[idx], SYSTEM); - - target_c_incpath.extra_pre_includes (sysroot, iprefix, stdinc); - - /* Finally chain on the standard directories. */ - if (stdinc) - add_standard_paths (sysroot, iprefix, imultilib, cxx_stdinc); - - target_c_incpath.extra_includes (sysroot, iprefix, stdinc); - - merge_include_chains (pfile, verbose); - - cpp_set_include_chains (pfile, heads[QUOTE], heads[BRACKET], - quote_ignores_source_dir); -} -#if !(defined TARGET_EXTRA_INCLUDES) || !(defined TARGET_EXTRA_PRE_INCLUDES) -static void hook_void_charptr_charptr_int (const char *sysroot ATTRIBUTE_UNUSED, - const char *iprefix ATTRIBUTE_UNUSED, - int stdinc ATTRIBUTE_UNUSED) -{ -} -#endif - -#ifndef TARGET_EXTRA_INCLUDES -#define TARGET_EXTRA_INCLUDES hook_void_charptr_charptr_int -#endif -#ifndef TARGET_EXTRA_PRE_INCLUDES -#define TARGET_EXTRA_PRE_INCLUDES hook_void_charptr_charptr_int -#endif - -struct target_c_incpath_s target_c_incpath = { TARGET_EXTRA_PRE_INCLUDES, TARGET_EXTRA_INCLUDES }; - |