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Makefile.in (C_AND_OBJC_OBJS, [...]): Update. 

* Makefile.in (C_AND_OBJC_OBJS, c-incpath.o, c-lex.o, LIBCPP_OBJS,
	cppinit.o, cppdefault.o, fix-header): Update.
	* c-incpath.c: New file.
	* c-incpath.h: New file.
	* c-lex.c: Include c-incpath.h.
	(init_c_lex): Register path simplifier.
	* c-opts.c: Include cppdefault.h and c-incpath.h.
	(TARGET_SYSTEM_ROOT, verbose, iprefix, sysroot, std_inc,
	std_cxx_inc, quote_chain_split, add_prefixed_path): New.
	(COMMAND_LINE_OPTIONS): Add more options from cpplib.
	(missing_arg, c_common_decode_option): Handle them.
	(c_common_post_options): Register include chains.
	(print_help): Update.
	* cppdefault.h (struct default include): Update.
	Move some macros to ...
	* cppdefault.c: ... here.
	(cpp_include_defaults): Add extra field add_sysroot.
	* cppfiles.c (include_file, search_from, find_or_create_entry,
	cpp_included, find_include_file, remap_filename): Update for
	renaming of search_path to cpp_path, and of the chain headers.
	(remove_component_p, _cpp_simplify_pathname): Move to c-incpath.c.
	* cpphash.h (struct search_path): Move to cpplib.h.
	(struct cpp_buffer, struct cpp_reader): Update.
	(_cpp_simplify_pathname): Remove.
	* cppinit.c: Don't include prefix.h and cppdefault.h.
	(INO_T_EQ, INO_T_COPY, path_include, append_include_chain,
	remove_dup_dir, remove_dup_nonsys_dirs, remove_dup_dirs,
	init_standard_includes, BRACKET, SYSTEM, AFTER, no_dir,
	no_pth, cpp_handle_options): Remove.
	(struct pending_option): Remove chain members.
	(cpp_destroy, cpp_read_main_file, COMMAND_LINE_OPTIONS,
	cpp_handle_option): Update.
	* cpplib.h (struct cpp_path, cpp_set_include_chains): New.
	(struct cpp_options): Remove quote_include, bracket_include,
	include_prefix, include_prefix_len, verbose, ignore_srcdir,
	no_standard_includes, no_standard_cplusplus_includes.
	(struct cpp_callbacks): Add simplify_path.
	(cpp_handle_options): Remove.
	* fix-header.c: Include c-incpath.h.
	(read_scan_file): Update to use c-incpath functionality.
	* doc/passes.texi: Update.
cp:
	* Make-lang.in (CXX_C_OBJS): Update.

From-SVN: r63612
This commit is contained in:
Neil Booth 2003-03-01 14:31:21 +00:00 committed by Neil Booth
parent 6620997bdc
commit 5793b27668
16 changed files with 842 additions and 804 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
gcc/ChangeLog
View File

@ -1,3 +1,47 @@
2003-03-01 Neil Booth <neil@daikokuya.co.uk>
* Makefile.in (C_AND_OBJC_OBJS, c-incpath.o, c-lex.o, LIBCPP_OBJS,
cppinit.o, cppdefault.o, fix-header): Update.
* c-incpath.c: New file.
* c-incpath.h: New file.
* c-lex.c: Include c-incpath.h.
(init_c_lex): Register path simplifier.
* c-opts.c: Include cppdefault.h and c-incpath.h.
(TARGET_SYSTEM_ROOT, verbose, iprefix, sysroot, std_inc,
std_cxx_inc, quote_chain_split, add_prefixed_path): New.
(COMMAND_LINE_OPTIONS): Add more options from cpplib.
(missing_arg, c_common_decode_option): Handle them.
(c_common_post_options): Register include chains.
(print_help): Update.
* cppdefault.h (struct default include): Update.
Move some macros to ...
* cppdefault.c: ... here.
(cpp_include_defaults): Add extra field add_sysroot.
* cppfiles.c (include_file, search_from, find_or_create_entry,
cpp_included, find_include_file, remap_filename): Update for
renaming of search_path to cpp_path, and of the chain headers.
(remove_component_p, _cpp_simplify_pathname): Move to c-incpath.c.
* cpphash.h (struct search_path): Move to cpplib.h.
(struct cpp_buffer, struct cpp_reader): Update.
(_cpp_simplify_pathname): Remove.
* cppinit.c: Don't include prefix.h and cppdefault.h.
(INO_T_EQ, INO_T_COPY, path_include, append_include_chain,
remove_dup_dir, remove_dup_nonsys_dirs, remove_dup_dirs,
init_standard_includes, BRACKET, SYSTEM, AFTER, no_dir,
no_pth, cpp_handle_options): Remove.
(struct pending_option): Remove chain members.
(cpp_destroy, cpp_read_main_file, COMMAND_LINE_OPTIONS,
cpp_handle_option): Update.
* cpplib.h (struct cpp_path, cpp_set_include_chains): New.
(struct cpp_options): Remove quote_include, bracket_include,
include_prefix, include_prefix_len, verbose, ignore_srcdir,
no_standard_includes, no_standard_cplusplus_includes.
(struct cpp_callbacks): Add simplify_path.
(cpp_handle_options): Remove.
* fix-header.c: Include c-incpath.h.
(read_scan_file): Update to use c-incpath functionality.
* doc/passes.texi: Update.
2003-03-01 Kazu Hirata <kazu@cs.umass.edu>
* config/h8300/h8300.c (bit_operand): Accept MEM only if it

20
gcc/Makefile.in
View File

@ -759,6 +759,7 @@ CXX_TARGET_OBJS=@cxx_target_objs@
# Language-specific object files for C and Objective C.
C_AND_OBJC_OBJS = attribs.o c-errors.o c-lex.o c-pragma.o c-decl.o c-typeck.o \
c-convert.o c-aux-info.o c-common.o c-opts.o c-format.o c-semantics.o \
c-incpath.o cppdefault.o \
c-objc-common.o c-dump.o c-pch.o libcpp.a $(C_TARGET_OBJS)
# Language-specific object files for C.
@ -1218,6 +1219,9 @@ $(parsedir)/c-parse.y: c-parse.in
$(srcdir)/c-parse.in >>tmp-c-parse.y
$(SHELL) $(srcdir)/move-if-change tmp-c-parse.y $(parsedir)/c-parse.y
c-incpath.o: c-incpath.c c-incpath.h $(CONFIG_H) $(SYSTEM_H) $(CPPLIB_H) \
intl.h prefix.h coretypes.h $(TM_H) cppdefault.h
c-decl.o : c-decl.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H) $(RTL_H) \
$(C_TREE_H) $(GGC_H) $(TARGET_H) flags.h function.h output.h $(EXPR_H) \
debug.h toplev.h intl.h $(TM_P_H) tree-inline.h $(TIMEVAR_H) c-pragma.h \
@ -1226,8 +1230,8 @@ c-typeck.o : c-typeck.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H) $(
$(TARGET_H) flags.h intl.h output.h $(EXPR_H) $(RTL_H) toplev.h $(TM_P_H)
c-lang.o : c-lang.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H) $(C_TREE_H) \
$(GGC_H) langhooks.h $(LANGHOOKS_DEF_H) c-common.h gtype-c.h
c-lex.o : c-lex.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H) $(RTL_H) \
debug.h $(C_TREE_H) c-common.h real.h \
c-lex.o : c-lex.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H) \
$(RTL_H) debug.h $(C_TREE_H) c-common.h real.h c-incpath.h cppdefault.h \
c-pragma.h input.h intl.h flags.h toplev.h output.h \
mbchar.h $(CPPLIB_H) $(EXPR_H) $(TM_P_H)
c-objc-common.o : c-objc-common.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H) \
@ -2271,7 +2275,7 @@ PREPROCESSOR_DEFINES = \
@TARGET_SYSTEM_ROOT_DEFINE@
LIBCPP_OBJS = cpplib.o cpplex.o cppmacro.o cppexp.o cppfiles.o cpptrad.o \
cpphash.o cpperror.o cppinit.o cppdefault.o cppmain.o \
cpphash.o cpperror.o cppinit.o cppmain.o \
hashtable.o line-map.o mkdeps.o prefix.o mbchar.o cpppch.o
LIBCPP_DEPS = $(CPPLIB_H) cpphash.h line-map.h hashtable.h intl.h \
@ -2294,11 +2298,11 @@ cpplib.o: cpplib.c $(LIBCPP_DEPS)
cpphash.o: cpphash.c $(LIBCPP_DEPS)
cpptrad.o: cpptrad.c $(LIBCPP_DEPS)
cppfiles.o: cppfiles.c $(LIBCPP_DEPS) $(SPLAY_TREE_H) mkdeps.h
cppinit.o: cppinit.c $(LIBCPP_DEPS) cppdefault.h mkdeps.h prefix.h
cppinit.o: cppinit.c $(LIBCPP_DEPS) mkdeps.h prefix.h
cpppch.o: cpppch.c $(LIBCPP_DEPS) mkdeps.h
cppdefault.o: cppdefault.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) cppdefault.h \
Makefile
cppdefault.o: cppdefault.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) \
cppdefault.h Makefile
$(CC) $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) \
$(PREPROCESSOR_DEFINES) \
-c $(srcdir)/cppdefault.c $(OUTPUT_OPTION)
@ -2512,9 +2516,9 @@ xsys-protos.h: $(GCC_PASSES) $(srcdir)/sys-protos.h deduced.h gen-protos$(build_
# This is nominally a 'build' program, but it's run only when host==build,
# so we can (indeed, must) use $(LIBDEPS) and $(LIBS).
fix-header$(build_exeext): fix-header.o scan-decls.o scan.o xsys-protos.h \
$(LIBDEPS) libcpp.a
c-incpath.o cppdefault.o $(LIBDEPS) libcpp.a
$(BUILD_CC) $(BUILD_CFLAGS) $(BUILD_LDFLAGS) -o $@ fix-header.o \
scan-decls.o scan.o libcpp.a $(LIBS)
c-incpath.o cppdefault.o scan-decls.o scan.o libcpp.a $(LIBS)
fix-header.o: fix-header.c $(OBSTACK_H) scan.h \
xsys-protos.h $(BCONFIG_H) $(SYSTEM_H) coretypes.h $(GTM_H) $(CPPLIB_H)

510
gcc/c-incpath.c Normal file
View File

@ -0,0 +1,510 @@
/* 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 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "config.h"
#include "system.h"
#include "coretypes.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 void add_env_var_paths PARAMS ((const char *, int));
static void add_standard_paths PARAMS ((const char *, const char *, int));
static void free_path PARAMS ((struct cpp_path *, int));
static void merge_include_chains PARAMS ((cpp_reader *, int));
static int remove_component_p PARAMS ((const char *));
static struct cpp_path *
remove_duplicates PARAMS ((cpp_reader *, struct cpp_path *,
struct cpp_path *, struct cpp_path *, int));
/* Include chains heads and tails. */
static struct cpp_path *heads[4];
static struct cpp_path *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 (path, reason)
struct cpp_path *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 ((PTR) 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 (env_var, chain)
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 = xmalloc (q - p + 1);
memcpy (path, p, q - p);
path[q - p] = '\0';
}
add_path (path, chain, chain == SYSTEM);
}
}
/* Append the standard include chain defined in cppdefault.c. */
static void
add_standard_paths (sysroot, iprefix, cxx_stdinc)
const char *sysroot, *iprefix;
int cxx_stdinc;
{
const struct default_include *p;
size_t len = 0;
if (iprefix)
len = cpp_GCC_INCLUDE_DIR_len;
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);
/* Does this directory start with the prefix? If so, search
"translated" versions of GNU directories. These have
/usr/local/lib/gcc... replaced by iprefix. */
else if (len && !strncmp (p->fname, cpp_GCC_INCLUDE_DIR, len))
str = concat (iprefix, p->fname + len, NULL);
else
str = update_path (p->fname, p->component);
add_path (str, SYSTEM, p->cxx_aware);
}
}
}
/* 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_path *
remove_duplicates (pfile, head, system, join, verbose)
cpp_reader *pfile;
struct cpp_path *head;
struct cpp_path *system;
struct cpp_path *join;
int verbose;
{
struct cpp_path **pcur, *tmp, *cur;
struct stat st;
for (pcur = &head; *pcur; )
{
int reason = REASON_QUIET;
cur = *pcur;
simplify_path (cur->name);
if (stat (cur->name, &st))
{
/* Dirs that don't exist are silently ignored, unless verbose. */
if (errno != ENOENT)
cpp_errno (pfile, DL_ERROR, cur->name);
else
reason = REASON_NOENT;
}
else if (!S_ISDIR (st.st_mode))
cpp_error_with_line (pfile, 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)
break;
if (!tmp)
{
/* Dupicate 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)
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))
{
/* 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 -Ifoo -Ibar -I- -Ifoo -Iquux. It is however safe
to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written -Ibar -I- -Ifoo
-Iquux. */
static void
merge_include_chains (pfile, verbose)
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_path *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 ()
{
heads[QUOTE] = heads[BRACKET];
tails[QUOTE] = tails[BRACKET];
heads[BRACKET] = NULL;
tails[BRACKET] = NULL;
/* This is NOT redundant. */
quote_ignores_source_dir = true;
}
/* Add PATH to the include chain CHAIN. PATH must be malloc-ed and
NUL-terminated. */
void
add_path (path, chain, cxx_aware)
char *path;
int chain;
int cxx_aware;
{
struct cpp_path *p;
p = (struct cpp_path *) xmalloc (sizeof (struct cpp_path));
p->next = NULL;
p->name = path;
if (chain == SYSTEM || chain == AFTER)
p->sysp = 1 + (cxx_aware != 0);
else
p->sysp = 0;
if (tails[chain])
tails[chain]->next = p;
else
heads[chain] = p;
tails[chain] = p;
}
/* Exported function to handle include chain merging, duplicate
removal, and registration with cpplib. */
void
register_include_chains (pfile, sysroot, iprefix,
stdinc, cxx_stdinc, verbose)
cpp_reader *pfile;
const char *sysroot, *iprefix;
int stdinc, cxx_stdinc, 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);
/* Finally chain on the standard directories. */
if (stdinc)
add_standard_paths (sysroot, iprefix, cxx_stdinc);
merge_include_chains (pfile, verbose);
cpp_set_include_chains (pfile, heads[QUOTE], heads[BRACKET],
quote_ignores_source_dir);
}
/* Returns true if it is safe to remove the final component of path,
when it is followed by a ".." component. We use lstat to avoid
symlinks if we have it. If not, we can still catch errors with
stat (). */
static int
remove_component_p (path)
const char *path;
{
struct stat s;
int result;
#ifdef HAVE_LSTAT
result = lstat (path, &s);
#else
result = stat (path, &s);
#endif
/* There's no guarantee that errno will be unchanged, even on
success. Cygwin's lstat(), for example, will often set errno to
ENOSYS. In case of success, reset errno to zero. */
if (result == 0)
errno = 0;
return result == 0 && S_ISDIR (s.st_mode);
}
/* Simplify a path name in place, deleting redundant components. This
reduces OS overhead and guarantees that equivalent paths compare
the same (modulo symlinks).
Transforms made:
foo/bar/../quux foo/quux
foo/./bar foo/bar
foo//bar foo/bar
/../quux /quux
//quux //quux (POSIX allows leading // as a namespace escape)
Guarantees no trailing slashes. All transforms reduce the length
of the string. Returns PATH. errno is 0 if no error occurred;
nonzero if an error occurred when using stat () or lstat (). */
void
simplify_path (path)
char *path ATTRIBUTE_UNUSED;
{
#ifndef VMS
char *from, *to;
char *base, *orig_base;
int absolute = 0;
errno = 0;
/* Don't overflow the empty path by putting a '.' in it below. */
if (*path == '\0')
return;
#if defined (HAVE_DOS_BASED_FILE_SYSTEM)
/* Convert all backslashes to slashes. */
for (from = path; *from; from++)
if (*from == '\\') *from = '/';
/* Skip over leading drive letter if present. */
if (ISALPHA (path[0]) && path[1] == ':')
from = to = &path[2];
else
from = to = path;
#else
from = to = path;
#endif
/* Remove redundant leading /s. */
if (*from == '/')
{
absolute = 1;
to++;
from++;
if (*from == '/')
{
if (*++from == '/')
/* 3 or more initial /s are equivalent to 1 /. */
while (*++from == '/');
else
/* On some hosts // differs from /; Posix allows this. */
to++;
}
}
base = orig_base = to;
for (;;)
{
int move_base = 0;
while (*from == '/')
from++;
if (*from == '\0')
break;
if (*from == '.')
{
if (from[1] == '\0')
break;
if (from[1] == '/')
{
from += 2;
continue;
}
else if (from[1] == '.' && (from[2] == '/' || from[2] == '\0'))
{
/* Don't simplify if there was no previous component. */
if (absolute && orig_base == to)
{
from += 2;
continue;
}
/* Don't simplify if the previous component was "../",
or if an error has already occurred with (l)stat. */
if (base != to && errno == 0)
{
/* We don't back up if it's a symlink. */
*to = '\0';
if (remove_component_p (path))
{
while (to > base && *to != '/')
to--;
from += 2;
continue;
}
}
move_base = 1;
}
}
/* Add the component separator. */
if (to > orig_base)
*to++ = '/';
/* Copy this component until the trailing null or '/'. */
while (*from != '\0' && *from != '/')
*to++ = *from++;
if (move_base)
base = to;
}
/* Change the empty string to "." so that it is not treated as stdin.
Null terminate. */
if (to == path)
*to++ = '.';
*to = '\0';
#else /* VMS */
errno = 0;
#endif /* !VMS */
}

24
gcc/c-incpath.h Normal file
View File

@ -0,0 +1,24 @@
/* Set up combined include path for the preprocessor.
Copyright (C) 2003 Free Software Foundation, Inc.
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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
extern void split_quote_chain PARAMS ((void));
extern void add_path PARAMS ((char *, int, int));
extern void register_include_chains PARAMS ((cpp_reader *, const char *,
const char *, int, int, int));
extern void simplify_path PARAMS ((char *));
enum { QUOTE = 0, BRACKET, SYSTEM, AFTER };

4
gcc/c-lex.c
View File

@ -1,6 +1,6 @@
/* Mainly the interface between cpplib and the C front ends.
Copyright (C) 1987, 1988, 1989, 1992, 1994, 1995, 1996, 1997
1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
This file is part of GCC.
@ -41,6 +41,7 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
#include "tm_p.h"
#include "splay-tree.h"
#include "debug.h"
#include "c-incpath.h"
#ifdef MULTIBYTE_CHARS
#include "mbchar.h"
@ -124,6 +125,7 @@ init_c_lex (filename)
cb->ident = cb_ident;
cb->file_change = cb_file_change;
cb->def_pragma = cb_def_pragma;
cb->simplify_path = simplify_path;
cb->valid_pch = c_common_valid_pch;
cb->read_pch = c_common_read_pch;

106
gcc/c-opts.c
View File

@ -1,5 +1,5 @@
/* C/ObjC/C++ command line option handling.
Copyright (C) 2002 Free Software Foundation, Inc.
Copyright (C) 2002, 2003 Free Software Foundation, Inc.
Contributed by Neil Booth.
This file is part of GCC.
@ -32,6 +32,12 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
#include "tree-inline.h"
#include "diagnostic.h"
#include "intl.h"
#include "cppdefault.h"
#include "c-incpath.h"
#ifndef TARGET_SYSTEM_ROOT
# define TARGET_SYSTEM_ROOT NULL
#endif
/* CPP's options. */
static cpp_options *cpp_opts;
@ -49,9 +55,27 @@ static bool deps_append;
/* If dependency switches (-MF etc.) have been given. */
static bool deps_seen;
/* If -v seen. */
static bool verbose;
/* Dependency output file. */
static const char *deps_file;
/* The prefix given by -iprefix, if any. */
static const char *iprefix;
/* The system root, if any. Overridden by -isysroot. */
static const char *sysroot = TARGET_SYSTEM_ROOT;
/* Zero disables all standard directories for headers. */
static bool std_inc = true;
/* Zero disables the C++-specific standard directories for headers. */
static bool std_cxx_inc = true;
/* If the quote chain has been split by -I-. */
static bool quote_chain_split;
/* Number of deferred options, deferred options array size. */
static size_t deferred_count, deferred_size;
@ -69,6 +93,7 @@ static void check_deps_environment_vars PARAMS ((void));
static void preprocess_file PARAMS ((void));
static void handle_deferred_opts PARAMS ((void));
static void sanitize_cpp_opts PARAMS ((void));
static void add_prefixed_path PARAMS ((const char *, size_t));
#ifndef STDC_0_IN_SYSTEM_HEADERS
#define STDC_0_IN_SYSTEM_HEADERS 0
@ -117,6 +142,7 @@ static void sanitize_cpp_opts PARAMS ((void));
OPT("CC", CL_ALL, OPT_CC) \
OPT("E", CL_ALL, OPT_E) \
OPT("H", CL_ALL, OPT_H) \
OPT("I", CL_ALL | CL_ARG, OPT_I) \
OPT("M", CL_ALL, OPT_M) \
OPT("MD", CL_ALL | CL_SEPARATE, OPT_MD) \
OPT("MF", CL_ALL | CL_ARG, OPT_MF) \
@ -260,6 +286,12 @@ static void sanitize_cpp_opts PARAMS ((void));
OPT("fweak", CL_CXX, OPT_fweak) \
OPT("fxref", CL_CXX, OPT_fxref) \
OPT("gen-decls", CL_OBJC, OPT_gen_decls) \
OPT("idirafter", CL_ALL | CL_ARG, OPT_idirafter) \
OPT("iprefix", CL_ALL | CL_ARG, OPT_iprefix) \
OPT("isysroot", CL_ALL | CL_ARG, OPT_isysroot) \
OPT("isystem", CL_ALL | CL_ARG, OPT_isystem) \
OPT("iwithprefix", CL_ALL | CL_ARG, OPT_iwithprefix) \
OPT("iwithprefixbefore", CL_ALL | CL_ARG, OPT_iwithprefixbefore) \
OPT("lang-asm", CL_C_ONLY, OPT_lang_asm) \
OPT("lang-objc", CL_ALL, OPT_lang_objc) \
OPT("nostdinc", CL_ALL, OPT_nostdinc) \
@ -357,6 +389,9 @@ missing_arg (opt_index)
case OPT_fname_mangling:
case OPT_ftabstop:
case OPT_ftemplate_depth:
case OPT_iprefix:
case OPT_iwithprefix:
case OPT_iwithprefixbefore:
default:
error ("missing argument to \"-%s\"", opt_text);
break;
@ -365,6 +400,13 @@ missing_arg (opt_index)
error ("no class name specified with \"-%s\"", opt_text);
break;
case OPT_I:
case OPT_idirafter:
case OPT_isysroot:
case OPT_isystem:
error ("missing path after \"-%s\"", opt_text);
break;
case OPT_MF:
case OPT_MD:
case OPT_MMD:
@ -654,6 +696,18 @@ c_common_decode_option (argc, argv)
cpp_opts->print_include_names = 1;
break;
case OPT_I:
if (strcmp (arg, "-"))
add_path (xstrdup (arg), BRACKET, 0);
else
{
if (quote_chain_split)
error ("-I- specified twice");
quote_chain_split = true;
split_quote_chain ();
}
break;
case OPT_M:
case OPT_MM:
/* When doing dependencies with -M or -MM, suppress normal
@ -1264,6 +1318,30 @@ c_common_decode_option (argc, argv)
flag_gen_declaration = 1;
break;
case OPT_idirafter:
add_path (xstrdup (arg), AFTER, 0);
break;
case OPT_iprefix:
iprefix = arg;
break;
case OPT_isysroot:
sysroot = arg;
break;
case OPT_isystem:
add_path (xstrdup (arg), SYSTEM, 0);
break;
case OPT_iwithprefix:
add_prefixed_path (arg, SYSTEM);
break;
case OPT_iwithprefixbefore:
add_prefixed_path (arg, BRACKET);
break;
case OPT_lang_asm:
cpp_set_lang (parse_in, CLK_ASM);
break;
@ -1273,14 +1351,11 @@ c_common_decode_option (argc, argv)
break;
case OPT_nostdinc:
/* No default include directories. You must specify all
include-file directories with -I. */
cpp_opts->no_standard_includes = 1;
std_inc = false;
break;
case OPT_nostdincplusplus:
/* No default C++-specific include directories. */
cpp_opts->no_standard_cplusplus_includes = 1;
std_cxx_inc = false;
break;
case OPT_o:
@ -1356,7 +1431,7 @@ c_common_decode_option (argc, argv)
break;
case OPT_v:
cpp_opts->verbose = 1;
verbose = true;
break;
}
@ -1384,6 +1459,10 @@ c_common_post_options ()
sanitize_cpp_opts ();
register_include_chains (parse_in, sysroot, iprefix,
std_inc, std_cxx_inc && c_language == clk_cplusplus,
verbose);
flag_inline_trees = 1;
/* Use tree inlining if possible. Function instrumentation is only
@ -1607,6 +1686,18 @@ sanitize_cpp_opts ()
= warn_long_long && ((!flag_isoc99 && pedantic) || warn_traditional);
}
/* Add include path with a prefix at the front of its name. */
static void
add_prefixed_path (suffix, chain)
const char *suffix;
size_t chain;
{
const char *prefix;
prefix = iprefix ? iprefix: cpp_GCC_INCLUDE_DIR;
add_path (concat (prefix, suffix), chain, 0);
}
/* Set the C 89 standard (with 1994 amendments if C94, without GNU
extensions if ISO). There is no concept of gnu94. */
static void
@ -1808,6 +1899,7 @@ Switches:\n\
fputs (_("\
-f[no-]preprocessed Treat the input file as already preprocessed\n\
-ftabstop=<number> Distance between tab stops for column reporting\n\
-isysroot <dir> Set <dir> to be the system root directory\n\
-P Do not generate #line directives\n\
-remap Remap file names when including files\n\
--help Display this information\n\

4
gcc/cp/ChangeLog
View File

@ -1,3 +1,7 @@
2003-03-01 Neil Booth <neil@daikokuya.co.uk>
* Make-lang.in (CXX_C_OBJS): Update.
2003-02-28 Mark Mitchell <mark@codesourcery.com>
PR c++/9892

3
gcc/cp/Make-lang.in
View File

@ -79,7 +79,8 @@ g++-cross$(exeext): g++$(exeext)
# The compiler itself.
# Shared with C front end:
CXX_C_OBJS = attribs.o c-common.o c-format.o c-pragma.o c-semantics.o c-lex.o \
c-dump.o $(CXX_TARGET_OBJS) c-pretty-print.o c-opts.o c-pch.o
c-dump.o $(CXX_TARGET_OBJS) c-pretty-print.o c-opts.o c-pch.o \
c-incpath.o cppdefault.o
# Language-specific object files.
CXX_OBJS = cp/call.o cp/decl.o cp/expr.o cp/pt.o cp/typeck2.o \

21
gcc/cppdefault.c
View File

@ -1,6 +1,6 @@
/* CPP Library.
Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
1999, 2000 Free Software Foundation, Inc.
1999, 2000, 2003 Free Software Foundation, Inc.
Contributed by Per Bothner, 1994-95.
Based on CCCP program by Paul Rubin, June 1986
Adapted to ANSI C, Richard Stallman, Jan 1987
@ -19,15 +19,28 @@ You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* This file contains data definitions shared between cpplib and
tradcpp. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "cppdefault.h"
#ifndef STANDARD_INCLUDE_DIR
#define STANDARD_INCLUDE_DIR "/usr/include"
#endif
#ifndef STANDARD_INCLUDE_COMPONENT
#define STANDARD_INCLUDE_COMPONENT 0
#endif
#if defined (CROSS_COMPILE) && !defined (TARGET_SYSTEM_ROOT)
# undef LOCAL_INCLUDE_DIR
# undef SYSTEM_INCLUDE_DIR
# undef STANDARD_INCLUDE_DIR
#else
# undef CROSS_INCLUDE_DIR
#endif
const struct default_include cpp_include_defaults[]
#ifdef INCLUDE_DEFAULTS
= INCLUDE_DEFAULTS;

28
gcc/cppdefault.h
View File

@ -1,6 +1,6 @@
/* CPP Library.
Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
1999, 2000 Free Software Foundation, Inc.
1999, 2000, 2003 Free Software Foundation, Inc.
Contributed by Per Bothner, 1994-95.
Based on CCCP program by Paul Rubin, June 1986
Adapted to ANSI C, Richard Stallman, Jan 1987
@ -22,26 +22,6 @@ Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#ifndef GCC_CPPDEFAULT_H
#define GCC_CPPDEFAULT_H
/* This header contains declarations and/or #defines for all the
hard-wired defaults in cpp. Note it's used by both cpplib and
tradcpp. */
#ifndef STANDARD_INCLUDE_DIR
#define STANDARD_INCLUDE_DIR "/usr/include"
#endif
#ifndef STANDARD_INCLUDE_COMPONENT
#define STANDARD_INCLUDE_COMPONENT 0
#endif
#if defined (CROSS_COMPILE) && !defined (TARGET_SYSTEM_ROOT)
# undef LOCAL_INCLUDE_DIR
# undef SYSTEM_INCLUDE_DIR
# undef STANDARD_INCLUDE_DIR
#else
# undef CROSS_INCLUDE_DIR
#endif
/* This is the default list of directories to search for include files.
It may be overridden by the various -I and -ixxx options.
@ -57,11 +37,11 @@ struct default_include
const char *const fname; /* The name of the directory. */
const char *const component; /* The component containing the directory
(see update_path in prefix.c) */
const int cplusplus; /* Only look here if we're compiling C++. */
const int cxx_aware; /* Includes in this directory don't need to
const char cplusplus; /* Only look here if we're compiling C++. */
const char cxx_aware; /* Includes in this directory don't need to
be wrapped in extern "C" when compiling
C++. */
const int add_sysroot; /* FNAME should be prefixed by
const char add_sysroot; /* FNAME should be prefixed by
cpp_SYSROOT. */
};

226
gcc/cppfiles.c
View File

@ -1,6 +1,6 @@
/* Part of CPP library. (include file handling)
Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1998, 2003,
1999, 2000, 2001, 2002 Free Software Foundation, Inc.
Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1998,
1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
Written by Per Bothner, 1994.
Based on CCCP program by Paul Rubin, June 1986
Adapted to ANSI C, Richard Stallman, Jan 1987
@ -90,7 +90,7 @@ struct include_file {
const char *name; /* actual path name of file */
const char *header_name; /* the original header found */
const cpp_hashnode *cmacro; /* macro, if any, preventing reinclusion. */
const struct search_path *foundhere;
const struct cpp_path *foundhere;
/* location in search path where file was
found, for #include_next and sysp. */
const unsigned char *buffer; /* pointer to cached file contents */
@ -133,8 +133,8 @@ static struct file_name_map *read_name_map
PARAMS ((cpp_reader *, const char *));
static char *read_filename_string PARAMS ((int, FILE *));
static char *remap_filename PARAMS ((cpp_reader *, char *,
struct search_path *));
static struct search_path *search_from PARAMS ((cpp_reader *,
struct cpp_path *));
static struct cpp_path *search_from PARAMS ((cpp_reader *,
enum include_type));
static struct include_file *
find_include_file PARAMS ((cpp_reader *, const cpp_token *,
@ -153,7 +153,6 @@ static int report_missing_guard PARAMS ((splay_tree_node, void *));
static splay_tree_node find_or_create_entry PARAMS ((cpp_reader *,
const char *));
static void handle_missing_header PARAMS ((cpp_reader *, const char *, int));
static int remove_component_p PARAMS ((const char *));
/* Set up the splay tree we use to store information about all the
file names seen in this compilation. We also have entries for each
@ -161,7 +160,7 @@ static int remove_component_p PARAMS ((const char *));
don't try to open it again in future.
The key of each node is the file name, after processing by
_cpp_simplify_pathname. The path name may or may not be absolute.
simplify_path. The path name may or may not be absolute.
The path string has been malloced, as is automatically freed by
registering free () as the splay tree key deletion function.
@ -208,8 +207,7 @@ _cpp_never_reread (file)
}
/* Lookup a filename, which is simplified after making a copy, and
create an entry if none exists. errno is nonzero iff a (reported)
stat() error occurred during simplification. */
create an entry if none exists. */
static splay_tree_node
find_or_create_entry (pfile, fname)
cpp_reader *pfile;
@ -218,8 +216,15 @@ find_or_create_entry (pfile, fname)
splay_tree_node node;
struct include_file *file;
char *name = xstrdup (fname);
int saved_errno = 0;
if (pfile->cb.simplify_path)
{
errno = 0;
(pfile->cb.simplify_path) (name);
saved_errno = errno;
}
_cpp_simplify_pathname (name);
node = splay_tree_lookup (pfile->all_include_files, (splay_tree_key) name);
if (node)
free (name);
@ -228,7 +233,7 @@ find_or_create_entry (pfile, fname)
file = xcnew (struct include_file);
file->name = name;
file->header_name = name;
file->err_no = errno;
file->err_no = saved_errno;
node = splay_tree_insert (pfile->all_include_files,
(splay_tree_key) file->name,
(splay_tree_value) file);
@ -337,7 +342,9 @@ validate_pch (pfile, filename, pchname)
file->pch = pfile->cb.valid_pch (pfile, pchname, file->fd);
if (INCLUDE_PCH_P (file))
{
file->header_name = _cpp_simplify_pathname (xstrdup (filename));
char *f = xstrdup (filename);
(pfile->cb.simplify_path) (f);
file->header_name = f;
return file;
}
close (file->fd);
@ -640,7 +647,7 @@ cpp_included (pfile, fname)
cpp_reader *pfile;
const char *fname;
{
struct search_path *path;
struct cpp_path *path;
char *name, *n;
splay_tree_node nd;
@ -653,7 +660,7 @@ cpp_included (pfile, fname)
/* Search directory path for the file. */
name = (char *) alloca (strlen (fname) + pfile->max_include_len + 2);
for (path = CPP_OPTION (pfile, quote_include); path; path = path->next)
for (path = pfile->quote_include; path; path = path->next)
{
memcpy (name, path->name, path->len);
name[path->len] = '/';
@ -682,7 +689,7 @@ find_include_file (pfile, header, type)
enum include_type type;
{
const char *fname = (const char *) header->val.str.text;
struct search_path *path;
struct cpp_path *path;
struct include_file *file;
char *name, *n;
@ -695,7 +702,7 @@ find_include_file (pfile, header, type)
if (type == IT_INCLUDE_NEXT && pfile->buffer->inc->foundhere)
path = pfile->buffer->inc->foundhere->next;
else if (header->type == CPP_HEADER_NAME)
path = CPP_OPTION (pfile, bracket_include);
path = pfile->bracket_include;
else
path = search_from (pfile, type);
@ -905,7 +912,7 @@ _cpp_pop_file_buffer (pfile, inc)
If we're handling -include or -imacros, use the "" chain, but with
the preprocessor's cwd prepended. */
static struct search_path *
static struct cpp_path *
search_from (pfile, type)
cpp_reader *pfile;
enum include_type type;
@ -917,9 +924,9 @@ search_from (pfile, type)
if (type == IT_CMDLINE)
goto use_cwd;
/* Ignore the current file's directory if -I- was given. */
if (CPP_OPTION (pfile, ignore_srcdir))
return CPP_OPTION (pfile, quote_include);
/* Ignore the current file's directory? */
if (pfile->quote_ignores_source_dir)
return pfile->quote_include;
if (! buffer->search_cached)
{
@ -931,14 +938,14 @@ search_from (pfile, type)
{
/* We don't guarantee NAME is null-terminated. This saves
allocating and freeing memory. Drop a trailing '/'. */
buffer->dir.name = buffer->inc->name;
buffer->dir.name = (char *) buffer->inc->name;
if (dlen > 1)
dlen--;
}
else
{
use_cwd:
buffer->dir.name = ".";
buffer->dir.name = (char *) ".";
dlen = 1;
}
@ -946,7 +953,7 @@ search_from (pfile, type)
pfile->max_include_len = dlen;
buffer->dir.len = dlen;
buffer->dir.next = CPP_OPTION (pfile, quote_include);
buffer->dir.next = pfile->quote_include;
buffer->dir.sysp = pfile->map->sysp;
}
@ -1089,7 +1096,7 @@ static char *
remap_filename (pfile, name, loc)
cpp_reader *pfile;
char *name;
struct search_path *loc;
struct cpp_path *loc;
{
struct file_name_map *map;
const char *from, *p;
@ -1138,158 +1145,29 @@ remap_filename (pfile, name, loc)
return name;
}
/* Returns true if it is safe to remove the final component of path,
when it is followed by a ".." component. We use lstat to avoid
symlinks if we have it. If not, we can still catch errors with
stat (). */
static int
remove_component_p (path)
const char *path;
/* Set the include chain for "" to QUOTE, for <> to BRACKET. If
QUOTE_IGNORES_SOURCE_DIR, then "" includes do not look in the
directory of the including file.
If BRACKET does not lie in the QUOTE chain, it is set to QUOTE. */
void
cpp_set_include_chains (pfile, quote, bracket, quote_ignores_source_dir)
cpp_reader *pfile;
cpp_path *quote, *bracket;
int quote_ignores_source_dir;
{
struct stat s;
int result;
pfile->quote_include = quote;
pfile->bracket_include = quote;
pfile->quote_ignores_source_dir = quote_ignores_source_dir;
pfile->max_include_len = 0;
#ifdef HAVE_LSTAT
result = lstat (path, &s);
#else
result = stat (path, &s);
#endif
/* There's no guarantee that errno will be unchanged, even on
success. Cygwin's lstat(), for example, will often set errno to
ENOSYS. In case of success, reset errno to zero. */
if (result == 0)
errno = 0;
return result == 0 && S_ISDIR (s.st_mode);
}
/* Simplify a path name in place, deleting redundant components. This
reduces OS overhead and guarantees that equivalent paths compare
the same (modulo symlinks).
Transforms made:
foo/bar/../quux foo/quux
foo/./bar foo/bar
foo//bar foo/bar
/../quux /quux
//quux //quux (POSIX allows leading // as a namespace escape)
Guarantees no trailing slashes. All transforms reduce the length
of the string. Returns PATH. errno is 0 if no error occurred;
nonzero if an error occurred when using stat () or lstat (). */
char *
_cpp_simplify_pathname (path)
char *path;
{
#ifndef VMS
char *from, *to;
char *base, *orig_base;
int absolute = 0;
errno = 0;
/* Don't overflow the empty path by putting a '.' in it below. */
if (*path == '\0')
return path;
#if defined (HAVE_DOS_BASED_FILE_SYSTEM)
/* Convert all backslashes to slashes. */
for (from = path; *from; from++)
if (*from == '\\') *from = '/';
/* Skip over leading drive letter if present. */
if (ISALPHA (path[0]) && path[1] == ':')
from = to = &path[2];
else
from = to = path;
#else
from = to = path;
#endif
/* Remove redundant leading /s. */
if (*from == '/')
for (; quote; quote = quote->next)
{
absolute = 1;
to++;
from++;
if (*from == '/')
{
if (*++from == '/')
/* 3 or more initial /s are equivalent to 1 /. */
while (*++from == '/');
else
/* On some hosts // differs from /; Posix allows this. */
to++;
}
quote->name_map = NULL;
quote->len = strlen (quote->name);
if (quote->len > pfile->max_include_len)
pfile->max_include_len = quote->len;
if (quote == bracket)
pfile->bracket_include = bracket;
}
base = orig_base = to;
for (;;)
{
int move_base = 0;
while (*from == '/')
from++;
if (*from == '\0')
break;
if (*from == '.')
{
if (from[1] == '\0')
break;
if (from[1] == '/')
{
from += 2;
continue;
}
else if (from[1] == '.' && (from[2] == '/' || from[2] == '\0'))
{
/* Don't simplify if there was no previous component. */
if (absolute && orig_base == to)
{
from += 2;
continue;
}
/* Don't simplify if the previous component was "../",
or if an error has already occurred with (l)stat. */
if (base != to && errno == 0)
{
/* We don't back up if it's a symlink. */
*to = '\0';
if (remove_component_p (path))
{
while (to > base && *to != '/')
to--;
from += 2;
continue;
}
}
move_base = 1;
}
}
/* Add the component separator. */
if (to > orig_base)
*to++ = '/';
/* Copy this component until the trailing null or '/'. */
while (*from != '\0' && *from != '/')
*to++ = *from++;
if (move_base)
base = to;
}
/* Change the empty string to "." so that it is not treated as stdin.
Null terminate. */
if (to == path)
*to++ = '.';
*to = '\0';
return path;
#else /* VMS */
errno = 0;
return path;
#endif /* !VMS */
}

33
gcc/cpphash.h
View File

@ -1,5 +1,5 @@
/* Part of CPP library.
Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003
Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify it
@ -130,26 +130,6 @@ extern unsigned char *_cpp_unaligned_alloc PARAMS ((cpp_reader *, size_t));
#define BUFF_FRONT(BUFF) ((BUFF)->cur)
#define BUFF_LIMIT(BUFF) ((BUFF)->limit)
/* List of directories to look for include files in. */
struct search_path
{
struct search_path *next;
/* NOTE: NAME may not be null terminated for the case of the current
file's directory! */
const char *name;
unsigned int len;
/* We use these to tell if the directory mentioned here is a duplicate
of an earlier directory on the search path. */
ino_t ino;
dev_t dev;
/* Nonzero if it is a system include directory. */
int sysp;
/* Mapping of file names for this directory. Only used on MS-DOS
and related platforms. */
struct file_name_map *name_map;
};
/* #include types. */
enum include_type {IT_INCLUDE, IT_INCLUDE_NEXT, IT_IMPORT, IT_CMDLINE};
@ -324,7 +304,7 @@ struct cpp_buffer
/* The directory of the this buffer's file. Its NAME member is not
allocated, so we don't need to worry about freeing it. */
struct search_path dir;
struct cpp_path dir;
/* Used for buffer overlays by cpptrad.c. */
const uchar *saved_cur, *saved_rlimit;
@ -369,6 +349,10 @@ struct cpp_reader
_cpp_maybe_push_include_file has yet to restore the line map. */
struct pending_option **next_include_file;
/* Search paths for include files. */
struct cpp_path *quote_include; /* "" */
struct cpp_path *bracket_include; /* <> */
/* Multiple include optimisation. */
const cpp_hashnode *mi_cmacro;
const cpp_hashnode *mi_ind_cmacro;
@ -441,6 +425,10 @@ struct cpp_reader
/* Used when doing preprocessed output. */
struct printer print;
/* Nonzero means don't look for #include "foo" the source-file
directory. */
unsigned char quote_ignores_source_dir;
/* Whether cpplib owns the hashtable. */
unsigned char our_hashtable;
@ -521,7 +509,6 @@ extern void _cpp_destroy_hashtable PARAMS ((cpp_reader *));
/* In cppfiles.c */
extern void _cpp_fake_include PARAMS ((cpp_reader *, const char *));
extern void _cpp_never_reread PARAMS ((struct include_file *));
extern char *_cpp_simplify_pathname PARAMS ((char *));
extern bool _cpp_read_file PARAMS ((cpp_reader *, const char *));
extern bool _cpp_execute_include PARAMS ((cpp_reader *,
const cpp_token *,

530
gcc/cppinit.c
View File

@ -1,6 +1,6 @@
/* CPP Library.
Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
1999, 2000, 2001, 2002 Free Software Foundation, Inc.
1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
Contributed by Per Bothner, 1994-95.
Based on CCCP program by Paul Rubin, June 1986
Adapted to ANSI C, Richard Stallman, Jan 1987
@ -25,25 +25,8 @@ Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "tm.h"
#include "cpplib.h"
#include "cpphash.h"
#include "prefix.h"
#include "intl.h"
#include "mkdeps.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
/* Internal structures and prototypes. */
@ -64,12 +47,6 @@ struct pending_option
struct cpp_pending
{
struct pending_option *directive_head, *directive_tail;
struct search_path *quote_head, *quote_tail;
struct search_path *brack_head, *brack_tail;
struct search_path *systm_head, *systm_tail;
struct search_path *after_head, *after_tail;
struct pending_option *imacros_head, *imacros_tail;
struct pending_option *include_head, *include_tail;
};
@ -88,26 +65,12 @@ struct cpp_pending
} while (0)
#endif
static void path_include PARAMS ((cpp_reader *,
const char *, int));
static void init_library PARAMS ((void));
static void init_builtins PARAMS ((cpp_reader *));
static void mark_named_operators PARAMS ((cpp_reader *));
static void append_include_chain PARAMS ((cpp_reader *,
char *, int, int));
static struct search_path * remove_dup_dir PARAMS ((cpp_reader *,
struct search_path *,
struct search_path **));
static struct search_path * remove_dup_nonsys_dirs PARAMS ((cpp_reader *,
struct search_path **,
struct search_path *));
static struct search_path * remove_dup_dirs PARAMS ((cpp_reader *,
struct search_path **));
static void merge_include_chains PARAMS ((cpp_reader *));
static bool push_include PARAMS ((cpp_reader *,
struct pending_option *));
static void free_chain PARAMS ((struct pending_option *));
static void init_standard_includes PARAMS ((cpp_reader *));
static void read_original_filename PARAMS ((cpp_reader *));
static void new_pending_directive PARAMS ((struct cpp_pending *,
const char *,
@ -115,10 +78,6 @@ static void new_pending_directive PARAMS ((struct cpp_pending *,
static int parse_option PARAMS ((const char *));
static void post_options PARAMS ((cpp_reader *));
/* Fourth argument to append_include_chain: chain to use.
Note it's never asked to append to the quote chain. */
enum { BRACKET = 0, SYSTEM, AFTER };
/* If we have designated initializers (GCC >2.7) these tables can be
initialized, constant data. Otherwise, they have to be filled in at
runtime. */
@ -152,277 +111,6 @@ END
#undef END
#undef TRIGRAPH_MAP
/* Read ENV_VAR for a colon-separated list of file names; and
add all the names to the search path for include files. */
static void
path_include (pfile, env_var, path)
cpp_reader *pfile;
const char *env_var;
int path;
{
char *p, *q, *name;
GET_ENVIRONMENT (q, env_var);
if (!q)
return;
for (p = q; *q; p = q + 1)
{
/* Find the end of this name. */
q = p;
while (*q != 0 && *q != PATH_SEPARATOR) q++;
if (q == p)
{
/* An empty name in the path stands for the current directory. */
name = (char *) xmalloc (2);
name[0] = '.';
name[1] = 0;
}
else
{
/* Otherwise use the directory that is named. */
name = (char *) xmalloc (q - p + 1);
memcpy (name, p, q - p);
name[q - p] = 0;
}
append_include_chain (pfile, name, path, path == SYSTEM);
}
}
/* Append DIR to include path PATH. DIR must be allocated on the
heap; this routine takes responsibility for freeing it. CXX_AWARE
is nonzero if the header contains extern "C" guards for C++,
otherwise it is zero. */
static void
append_include_chain (pfile, dir, path, cxx_aware)
cpp_reader *pfile;
char *dir;
int path;
int cxx_aware;
{
struct cpp_pending *pend = CPP_OPTION (pfile, pending);
struct search_path *new;
struct stat st;
unsigned int len;
if (*dir == '\0')
{
free (dir);
dir = xstrdup (".");
}
_cpp_simplify_pathname (dir);
if (stat (dir, &st))
{
/* Dirs that don't exist are silently ignored. */
if (errno != ENOENT)
cpp_errno (pfile, DL_ERROR, dir);
else if (CPP_OPTION (pfile, verbose))
fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir);
free (dir);
return;
}
if (!S_ISDIR (st.st_mode))
{
cpp_error_with_line (pfile, DL_ERROR, 0, 0, "%s: Not a directory", dir);
free (dir);
return;
}
len = strlen (dir);
if (len > pfile->max_include_len)
pfile->max_include_len = len;
new = (struct search_path *) xmalloc (sizeof (struct search_path));
new->name = dir;
new->len = len;
INO_T_COPY (new->ino, st.st_ino);
new->dev = st.st_dev;
/* Both systm and after include file lists should be treated as system
include files since these two lists are really just a concatenation
of one "system" list. */
if (path == SYSTEM || path == AFTER)
new->sysp = cxx_aware ? 1 : 2;
else
new->sysp = 0;
new->name_map = NULL;
new->next = NULL;
switch (path)
{
case BRACKET: APPEND (pend, brack, new); break;
case SYSTEM: APPEND (pend, systm, new); break;
case AFTER: APPEND (pend, after, new); break;
}
}
/* Handle a duplicated include path. PREV is the link in the chain
before the duplicate, or NULL if the duplicate is at the head of
the chain. The duplicate is removed from the chain and freed.
Returns PREV. */
static struct search_path *
remove_dup_dir (pfile, prev, head_ptr)
cpp_reader *pfile;
struct search_path *prev;
struct search_path **head_ptr;
{
struct search_path *cur;
if (prev != NULL)
{
cur = prev->next;
prev->next = cur->next;
}
else
{
cur = *head_ptr;
*head_ptr = cur->next;
}
if (CPP_OPTION (pfile, verbose))
fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name);
free ((PTR) cur->name);
free (cur);
return prev;
}
/* Remove duplicate non-system directories for which there is an equivalent
system directory latter in the chain. The range for removal is between
*HEAD_PTR and END. Returns the directory before END, or NULL if none.
This algorithm is quadratic in the number system directories, which is
acceptable since there aren't usually that many of them. */
static struct search_path *
remove_dup_nonsys_dirs (pfile, head_ptr, end)
cpp_reader *pfile;
struct search_path **head_ptr;
struct search_path *end;
{
int sysdir = 0;
struct search_path *prev = NULL, *cur, *other;
for (cur = *head_ptr; cur; cur = cur->next)
{
if (cur->sysp)
{
sysdir = 1;
for (other = *head_ptr, prev = NULL;
other != end;
other = other ? other->next : *head_ptr)
{
if (!other->sysp
&& INO_T_EQ (cur->ino, other->ino)
&& cur->dev == other->dev)
{
other = remove_dup_dir (pfile, prev, head_ptr);
if (CPP_OPTION (pfile, verbose))
fprintf (stderr,
_(" as it is a non-system directory that duplicates a system directory\n"));
}
prev = other;
}
}
}
if (!sysdir)
for (cur = *head_ptr; cur != end; cur = cur->next)
prev = cur;
return prev;
}
/* Remove duplicate directories from a chain. Returns the tail of the
chain, or NULL if the chain is empty. This algorithm is quadratic
in the number of -I switches, which is acceptable since there
aren't usually that many of them. */
static struct search_path *
remove_dup_dirs (pfile, head_ptr)
cpp_reader *pfile;
struct search_path **head_ptr;
{
struct search_path *prev = NULL, *cur, *other;
for (cur = *head_ptr; cur; cur = cur->next)
{
for (other = *head_ptr; other != cur; other = other->next)
if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev)
{
cur = remove_dup_dir (pfile, prev, head_ptr);
break;
}
prev = cur;
}
return prev;
}
/* Merge the four include chains together in the order quote, bracket,
system, after. Remove duplicate dirs (as determined by
INO_T_EQ()). The system_include and after_include chains are never
referred to again after this function; all access is through the
bracket_include path. */
static void
merge_include_chains (pfile)
cpp_reader *pfile;
{
struct search_path *quote, *brack, *systm, *qtail;
struct cpp_pending *pend = CPP_OPTION (pfile, pending);
quote = pend->quote_head;
brack = pend->brack_head;
systm = pend->systm_head;
qtail = pend->quote_tail;
/* Paste together bracket, system, and after include chains. */
if (systm)
pend->systm_tail->next = pend->after_head;
else
systm = pend->after_head;
if (brack)
pend->brack_tail->next = systm;
else
brack = systm;
/* This is a bit tricky. First we drop non-system dupes of system
directories from the merged bracket-include list. Next we drop
dupes from the bracket and quote include lists. Then we drop
non-system dupes from the merged quote-include list. Finally,
if qtail and brack are the same directory, we cut out brack and
move brack up to point to qtail.
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 -Ifoo -Ibar -I- -Ifoo -Iquux. It is however
safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written
-Ibar -I- -Ifoo -Iquux. */
remove_dup_nonsys_dirs (pfile, &brack, systm);
remove_dup_dirs (pfile, &brack);
if (quote)
{
qtail = remove_dup_dirs (pfile, &quote);
qtail->next = brack;
qtail = remove_dup_nonsys_dirs (pfile, &quote, brack);
/* If brack == qtail, remove brack as it's simpler. */
if (qtail && brack && INO_T_EQ (qtail->ino, brack->ino)
&& qtail->dev == brack->dev)
brack = remove_dup_dir (pfile, qtail, &quote);
}
else
quote = brack;
CPP_OPTION (pfile, quote_include) = quote;
CPP_OPTION (pfile, bracket_include) = brack;
}
/* A set of booleans indicating what CPP features each source language
requires. */
struct lang_flags
@ -529,7 +217,6 @@ cpp_create_reader (lang)
CPP_OPTION (pfile, warn_endif_labels) = 1;
CPP_OPTION (pfile, warn_deprecated) = 1;
CPP_OPTION (pfile, warn_long_long) = !CPP_OPTION (pfile, c99);
CPP_OPTION (pfile, sysroot) = cpp_SYSROOT;
CPP_OPTION (pfile, pending) =
(struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
@ -588,7 +275,6 @@ void
cpp_destroy (pfile)
cpp_reader *pfile;
{
struct search_path *dir, *dirn;
cpp_context *context, *contextn;
tokenrun *run, *runn;
@ -628,13 +314,6 @@ cpp_destroy (pfile)
free (run);
}
for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn)
{
dirn = dir->next;
free ((PTR) dir->name);
free (dir);
}
for (context = pfile->base_context.next; context; context = contextn)
{
contextn = context->next;
@ -751,69 +430,6 @@ init_builtins (pfile)
(*pfile->cb.register_builtins) (pfile);
}
/* And another subroutine. This one sets up the standard include path. */
static void
init_standard_includes (pfile)
cpp_reader *pfile;
{
const struct default_include *p;
const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
int default_len, specd_len;
char *default_prefix;
/* Search "translated" versions of GNU directories.
These have /usr/local/lib/gcc... replaced by specd_prefix. */
default_len = 0;
specd_len = 0;
default_prefix = NULL;
if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
{
/* Remove the `include' from /usr/local/lib/gcc.../include.
GCC_INCLUDE_DIR will always end in /include. */
default_len = cpp_GCC_INCLUDE_DIR_len;
default_prefix = (char *) alloca (default_len + 1);
specd_len = strlen (specd_prefix);
memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
default_prefix[default_len] = '\0';
}
for (p = cpp_include_defaults; p->fname; p++)
{
/* Some standard dirs are only for C++. */
if (!p->cplusplus
|| (CPP_OPTION (pfile, cplusplus)
&& !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
{
char *str;
/* Should this dir start with the sysroot? */
if (p->add_sysroot && CPP_OPTION (pfile, sysroot))
str = concat (CPP_OPTION (pfile, sysroot), p->fname, NULL);
/* Does this dir start with the prefix? */
else if (default_len
&& !strncmp (p->fname, default_prefix, default_len))
{
/* Yes; change prefix and add to search list. */
int flen = strlen (p->fname);
int this_len = specd_len + flen - default_len;
str = (char *) xmalloc (this_len + 1);
memcpy (str, specd_prefix, specd_len);
memcpy (str + specd_len,
p->fname + default_len,
flen - default_len + 1);
}
else
str = update_path (p->fname, p->component);
append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
}
}
}
/* Pushes a command line -imacro and -include file indicated by P onto
the buffer stack. Returns nonzero if successful. */
static bool
@ -925,11 +541,6 @@ cpp_read_main_file (pfile, fname, table)
const char *fname;
hash_table *table;
{
static const char *const lang_env_vars[] =
{ "C_INCLUDE_PATH", "CPLUS_INCLUDE_PATH",
"OBJC_INCLUDE_PATH", "OBJCPLUS_INCLUDE_PATH" };
size_t lang;
sanity_checks (pfile);
post_options (pfile);
@ -939,35 +550,6 @@ cpp_read_main_file (pfile, fname, table)
hashtable is deferred until now. */
_cpp_init_hashtable (pfile, table);
/* Several environment variables may add to the include search path.
CPATH specifies an additional list of directories to be searched
as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
etc. specify an additional list of directories to be searched as
if specified with -isystem, for the language indicated. */
path_include (pfile, "CPATH", BRACKET);
lang = (CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus);
path_include (pfile, lang_env_vars[lang], SYSTEM);
/* Set up the include search path now. */
if (! CPP_OPTION (pfile, no_standard_includes))
init_standard_includes (pfile);
merge_include_chains (pfile);
/* With -v, print the list of dirs to search. */
if (CPP_OPTION (pfile, verbose))
{
struct search_path *l;
fprintf (stderr, _("#include \"...\" search starts here:\n"));
for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
{
if (l == CPP_OPTION (pfile, bracket_include))
fprintf (stderr, _("#include <...> search starts here:\n"));
fprintf (stderr, " %s\n", l->name);
}
fprintf (stderr, _("End of search list.\n"));
}
if (CPP_OPTION (pfile, deps.style) != DEPS_NONE)
{
if (!pfile->deps)
@ -1149,26 +731,17 @@ new_pending_directive (pend, text, handler)
I.e. a const string initializer with parens around it. That is
what N_("string") resolves to, so we make no_* be macros instead. */
#define no_ass N_("assertion missing after %s")
#define no_dir N_("directory name missing after %s")
#define no_fil N_("file name missing after %s")
#define no_mac N_("macro name missing after %s")
#define no_pth N_("path name missing after %s")
/* This is the list of all command line options, with the leading
"-" removed. It must be sorted in ASCII collating order. */
#define COMMAND_LINE_OPTIONS \
DEF_OPT("A", no_ass, OPT_A) \
DEF_OPT("D", no_mac, OPT_D) \
DEF_OPT("I", no_dir, OPT_I) \
DEF_OPT("U", no_mac, OPT_U) \
DEF_OPT("idirafter", no_dir, OPT_idirafter) \
DEF_OPT("imacros", no_fil, OPT_imacros) \
DEF_OPT("include", no_fil, OPT_include) \
DEF_OPT("iprefix", no_pth, OPT_iprefix) \
DEF_OPT("isysroot", no_dir, OPT_isysroot) \
DEF_OPT("isystem", no_dir, OPT_isystem) \
DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore)
DEF_OPT("include", no_fil, OPT_include)
#define DEF_OPT(text, msg, code) code,
enum opt_code
@ -1305,14 +878,6 @@ cpp_handle_option (pfile, argc, argv)
case OPT_D:
new_pending_directive (pend, arg, cpp_define);
break;
case OPT_iprefix:
CPP_OPTION (pfile, include_prefix) = arg;
CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
break;
case OPT_isysroot:
CPP_OPTION (pfile, sysroot) = arg;
break;
case OPT_A:
if (arg[0] == '-')
@ -1340,37 +905,6 @@ cpp_handle_option (pfile, argc, argv)
case OPT_U:
new_pending_directive (pend, arg, cpp_undef);
break;
case OPT_I: /* Add directory to path for includes. */
if (!strcmp (arg, "-"))
{
/* -I- means:
Use the preceding -I directories for #include "..."
but not #include <...>.
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.) */
if (! CPP_OPTION (pfile, ignore_srcdir))
{
pend->quote_head = pend->brack_head;
pend->quote_tail = pend->brack_tail;
pend->brack_head = 0;
pend->brack_tail = 0;
CPP_OPTION (pfile, ignore_srcdir) = 1;
}
else
{
cpp_error (pfile, DL_ERROR, "-I- specified twice");
return argc;
}
}
else
append_include_chain (pfile, xstrdup (arg), BRACKET, 0);
break;
case OPT_isystem:
/* Add directory to beginning of system include path, as a system
include directory. */
append_include_chain (pfile, xstrdup (arg), SYSTEM, 0);
break;
case OPT_include:
case OPT_imacros:
{
@ -1385,71 +919,11 @@ cpp_handle_option (pfile, argc, argv)
APPEND (pend, imacros, o);
}
break;
case OPT_iwithprefix:
/* Add directory to end of path for includes,
with the default prefix at the front of its name. */
/* fall through */
case OPT_iwithprefixbefore:
/* Add directory to main path for includes,
with the default prefix at the front of its name. */
{
char *fname;
int len;
len = strlen (arg);
if (CPP_OPTION (pfile, include_prefix) != 0)
{
size_t ipl = CPP_OPTION (pfile, include_prefix_len);
fname = xmalloc (ipl + len + 1);
memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
memcpy (fname + ipl, arg, len + 1);
}
else if (cpp_GCC_INCLUDE_DIR_len)
{
fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
}
else
fname = xstrdup (arg);
append_include_chain (pfile, fname,
opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
}
break;
case OPT_idirafter:
/* Add directory to end of path for includes. */
append_include_chain (pfile, xstrdup (arg), AFTER, 0);
break;
}
}
return i + 1;
}
/* Handle command-line options in (argc, argv).
Can be called multiple times, to handle multiple sets of options.
Returns if an unrecognized option is seen.
Returns number of strings consumed. */
int
cpp_handle_options (pfile, argc, argv)
cpp_reader *pfile;
int argc;
char **argv;
{
int i;
int strings_processed;
for (i = 0; i < argc; i += strings_processed)
{
strings_processed = cpp_handle_option (pfile, argc - i, argv + i);
if (strings_processed == 0)
break;
}
return i;
}
static void
post_options (pfile)
cpp_reader *pfile;

63
gcc/cpplib.h
View File

@ -39,6 +39,7 @@ typedef struct cpp_string cpp_string;
typedef struct cpp_hashnode cpp_hashnode;
typedef struct cpp_macro cpp_macro;
typedef struct cpp_callbacks cpp_callbacks;
typedef struct cpp_path cpp_path;
struct answer;
struct file_name_map_list;
@ -224,29 +225,13 @@ struct cpp_options
/* Pending options - -D, -U, -A, -I, -ixxx. */
struct cpp_pending *pending;
/* Search paths for include files. */
struct search_path *quote_include; /* "" */
struct search_path *bracket_include; /* <> */
/* Map between header names and file names, used only on DOS where
file names are limited in length. */
struct file_name_map_list *map_list;
/* Directory prefix that should replace `/usr/lib/gcc-lib/TARGET/VERSION'
in the standard include file directories. */
const char *include_prefix;
unsigned int include_prefix_len;
/* Directory prefix for system include directories in the standard search
path. */
const char *sysroot;
/* The language we're preprocessing. */
enum c_lang lang;
/* Non-0 means -v, so print the full set of include dirs. */
unsigned char verbose;
/* Nonzero means use extra default include directories for C++. */
unsigned char cplusplus;
@ -332,10 +317,6 @@ struct cpp_options
/* Nonzero means don't output line number information. */
unsigned char no_line_commands;
/* Nonzero means -I- has been seen, so don't look for #include "foo"
the source-file directory. */
unsigned char ignore_srcdir;
/* Zero means dollar signs are punctuation. */
unsigned char dollars_in_ident;
@ -358,12 +339,6 @@ struct cpp_options
bother trying to do macro expansion and whatnot. */
unsigned char preprocessed;
/* Nonzero disables all the standard directories for headers. */
unsigned char no_standard_includes;
/* Nonzero disables the C++-specific standard directories for headers. */
unsigned char no_standard_cplusplus_includes;
/* Nonzero means dump macros in some fashion - see above. */
unsigned char dump_macros;
@ -427,6 +402,7 @@ struct cpp_callbacks
void (*undef) PARAMS ((cpp_reader *, unsigned int, cpp_hashnode *));
void (*ident) PARAMS ((cpp_reader *, unsigned int, const cpp_string *));
void (*def_pragma) PARAMS ((cpp_reader *, unsigned int));
void (*simplify_path) PARAMS ((char *));
/* Called when the client has a chance to properly register
built-ins with cpp_define() and cpp_assert(). */
void (*register_builtins) PARAMS ((cpp_reader *));
@ -434,6 +410,30 @@ struct cpp_callbacks
void (*read_pch) PARAMS ((cpp_reader *, const char *, int, const char *));
};
/* Chain of directories to look for include files in. */
struct cpp_path
{
/* NULL-terminated singly-linked list. */
struct cpp_path *next;
/* NAME need not be NUL-terminated once inside cpplib. */
char *name;
unsigned int len;
/* One if a system header, two if a system header that has extern
"C" guards for C++. */
unsigned char sysp;
/* Mapping of file names for this directory for MS-DOS and
related platforms. */
struct file_name_map *name_map;
/* The C front end uses these to recognize duplicated
directories in the search path. */
ino_t ino;
dev_t dev;
};
/* Name under which this program was invoked. */
extern const char *progname;
@ -526,6 +526,10 @@ extern void cpp_add_dependency_target PARAMS ((cpp_reader *,
const char * target,
int quote));
/* Set the include paths. */
extern void cpp_set_include_chains PARAMS ((cpp_reader *, cpp_path *,
cpp_path *, int));
/* Call these to get pointers to the options and callback structures
for a given reader. These pointers are good until you call
cpp_finish on that reader. You can either edit the callbacks
@ -536,12 +540,9 @@ extern const struct line_maps *cpp_get_line_maps PARAMS ((cpp_reader *));
extern cpp_callbacks *cpp_get_callbacks PARAMS ((cpp_reader *));
extern void cpp_set_callbacks PARAMS ((cpp_reader *, cpp_callbacks *));
/* Now call cpp_handle_option[s] to handle 1[or more] switches. The
return value is the number of arguments used. If
cpp_handle_options returns without using all arguments, it couldn't
understand the next switch. Options processing is not completed
/* Now call cpp_handle_option to handle 1 switch. The return value is
the number of arguments used. Options processing is not completed
until you call cpp_finish_options. */
extern int cpp_handle_options PARAMS ((cpp_reader *, int, char **));
extern int cpp_handle_option PARAMS ((cpp_reader *, int, char **));
/* This function reads the file, but does not start preprocessing. It

2
gcc/doc/passes.texi
View File

@ -82,8 +82,10 @@ the other C-like languages: @file{c-common.c},
@file{c-pragma.c},
@file{c-semantics.c},
@file{c-lex.c},
@file{c-incpath.c}
@file{c-common.h},
@file{c-dump.h},
@file{c-incpath.h}
and
@file{c-pragma.h},

28
gcc/fix-header.c
View File

@ -1,6 +1,6 @@
/* fix-header.c - Make C header file suitable for C++.
Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998,
1999, 2000, 2001 Free Software Foundation, Inc.
1999, 2000, 2001, 2003 Free Software Foundation, Inc.
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
@ -78,6 +78,7 @@ Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "obstack.h"
#include "scan.h"
#include "cpplib.h"
#include "c-incpath.h"
static void v_fatal PARAMS ((const char *, va_list)) ATTRIBUTE_PRINTF (1,0) ATTRIBUTE_NORETURN;
static void fatal PARAMS ((const char *, ...)) ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
@ -616,7 +617,7 @@ read_scan_file (in_fname, argc, argv)
cpp_callbacks *cb;
cpp_options *options;
struct fn_decl *fn;
int i;
int i, strings_processed;
struct symbol_list *cur_symbols;
obstack_init (&scan_file_obstack);
@ -624,6 +625,7 @@ read_scan_file (in_fname, argc, argv)
scan_in = cpp_create_reader (CLK_GNUC89);
cb = cpp_get_callbacks (scan_in);
cb->file_change = cb_file_change;
cb->simplify_path = simplify_path;
/* We are going to be scanning a header file out of its proper context,
so ignore warnings and errors. */
@ -631,12 +633,32 @@ read_scan_file (in_fname, argc, argv)
options->inhibit_warnings = 1;
options->inhibit_errors = 1;
i = cpp_handle_options (scan_in, argc, argv);
for (i = 0; i < argc; i += strings_processed)
{
if (argv[i][0] == 'I')
{
if (argv[i][1] != '\0')
strings_processed = 1, add_path (argv[i] + 1, BRACKET, false);
else if (i + 1 == argc)
strings_processed = 0;
else
strings_processed = 2, add_path (argv[i + 1], BRACKET, false);
}
else
strings_processed = cpp_handle_option (scan_in, argc - i, argv + i);
if (strings_processed == 0)
break;
}
if (i < argc)
cpp_error (scan_in, DL_ERROR, "invalid option `%s'", argv[i]);
if (cpp_errors (scan_in))
exit (FATAL_EXIT_CODE);
register_include_chains (scan_in, NULL /* sysroot */, NULL /* iprefix */,
true /* stdinc */, false /* cxx_stdinc */,
false /* verbose */);
if (! cpp_read_main_file (scan_in, in_fname, NULL))
exit (FATAL_EXIT_CODE);