(REQUIRED_OFILES): Add lrealpath.o.
(lrealpath.o): Add rule.
* aclocal.m4 (libiberty_NEED_DECLARATION): Add.
* configure.in: Add realpath and canonicalize_file_name to
checkfuncs and AC_CHECK_FUNCS. Use libiberty_NEED_DECLARATION
for canonicalize_file_name.
* lrealpath.c: New file.
* make-relative-prefix.c: Update documentation.
(make_relative_prefix): Simplify. Use lbasename and lrealpath.
* config.in: Regenerated.
* configure: Regenerated.
* functions.texi: Regenerated.
+2003-02-20 Daniel Jacobowitz <drow@mvista.com>
+
+ * Makefile.in (CFILES): Add lrealpath.c.
+ (REQUIRED_OFILES): Add lrealpath.o.
+ (lrealpath.o): Add rule.
+ * aclocal.m4 (libiberty_NEED_DECLARATION): Add.
+ * configure.in: Add realpath and canonicalize_file_name to
+ checkfuncs and AC_CHECK_FUNCS. Use libiberty_NEED_DECLARATION
+ for canonicalize_file_name.
+ * lrealpath.c: New file.
+ * make-relative-prefix.c: Update documentation.
+ (make_relative_prefix): Simplify. Use lbasename and lrealpath.
+ * config.in: Regenerated.
+ * configure: Regenerated.
+ * functions.texi: Regenerated.
+
2003-02-20 jmc <jmc@prioris.mini.pw.edu.pl>
* cplus_dem.c: Fix typo: intializes -> initializes.
hashtab.c hex.c \
index.c insque.c \
lbasename.c \
+ lrealpath.c \
make-relative-prefix.c \
make-temp-file.c md5.c memchr.c memcmp.c memcpy.c memmove.c \
memset.c mkstemps.c \
getopt.o getopt1.o getpwd.o getruntime.o \
hashtab.o hex.o \
lbasename.o \
+ lrealpath.o \
make-relative-prefix.o \
make-temp-file.o \
objalloc.o obstack.o \
hex.o: $(INCDIR)/ansidecl.h $(INCDIR)/libiberty.h
lbasename.o: $(INCDIR)/ansidecl.h $(INCDIR)/libiberty.h \
$(INCDIR)/safe-ctype.h
+lrealpath.o: config.h $(INCDIR)/ansidecl.h $(INCDIR)/libiberty.h
make-relative-prefix.o: config.h $(INCDIR)/ansidecl.h $(INCDIR)/libiberty.h
make-temp-file.o: config.h $(INCDIR)/ansidecl.h $(INCDIR)/libiberty.h
md5.o: config.h $(INCDIR)/ansidecl.h $(INCDIR)/md5.h
fi
])
+dnl See whether we need a declaration for a function.
+AC_DEFUN(libiberty_NEED_DECLARATION,
+[AC_MSG_CHECKING([whether $1 must be declared])
+AC_CACHE_VAL(libiberty_cv_decl_needed_$1,
+[AC_TRY_COMPILE([
+#include "confdefs.h"
+#include <stdio.h>
+#ifdef HAVE_STRING_H
+#include <string.h>
+#else
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif],
+[char *(*pfn) = (char *(*)) $1],
+libiberty_cv_decl_needed_$1=no, libiberty_cv_decl_needed_$1=yes)])
+AC_MSG_RESULT($libiberty_cv_decl_needed_$1)
+if test $libiberty_cv_decl_needed_$1 = yes; then
+ AC_DEFINE([NEED_DECLARATION_]translit($1, [a-z], [A-Z]), 1,
+ [Define if $1 is not declared in system header files.])
+fi
+])dnl
+
# FIXME: We temporarily define our own version of AC_PROG_CC. This is
# copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
# are probably using a cross compiler, which will not be able to fully
vars="sys_errlist sys_nerr sys_siglist"
checkfuncs="getrusage on_exit psignal strerror strsignal sysconf times sbrk gettimeofday"
+checkfuncs="$checkfuncs realpath canonicalize_file_name"
# These are neither executed nor required, but they help keep
# autoheader happy without adding a bunch of text to acconfig.h.
AC_CHECK_FUNCS(strtod strtol strtoul tmpnam vasprintf vfprintf vprintf)
AC_CHECK_FUNCS(vsprintf waitpid getrusage on_exit psignal strerror strsignal)
AC_CHECK_FUNCS(sysconf times sbrk gettimeofday ffs)
+ AC_CHECK_FUNCS(realpath canonicalize_file_name)
AC_DEFINE(HAVE_SYS_ERRLIST, 1, [Define if you have the sys_errlist variable.])
AC_DEFINE(HAVE_SYS_NERR, 1, [Define if you have the sys_nerr variable.])
AC_DEFINE(HAVE_SYS_SIGLIST, 1, [Define if you have the sys_siglist variable.])
fi
done
AC_CHECK_FUNCS($checkfuncs)
+ libiberty_NEED_DECLARATION(canonicalize_file_name)
fi
# Figure out which version of pexecute to use.
@end deftypefn
-@c make-relative-prefix.c:24
-@deftypefn Extension {const char*} make_relative_prefix (const char *@var{progname}, const char *@var{bin_prefix}, const char *@var{prefix})
+@c lrealpath.c:25
+@deftypefn Replacement {const char*} lrealpath (const char *@var{name})
+
+Given a pointer to a string containing a pathname, returns a canonical
+version of the filename. Symlinks will be resolved, and ``.'' and ``..''
+components will be simplified. The returned value will be allocated using
+@code{xmalloc} or @code{malloc}.
-Given three strings @var{progname}, @var{bin_prefix}, @var{prefix}, return a string
-that gets to @var{prefix} starting with the directory portion of @var{progname} and
-a relative pathname of the difference between @var{bin_prefix} and @var{prefix}.
+@end deftypefn
-For example, if @var{bin_prefix} is @code{/alpha/beta/gamma/gcc/delta}, @var{prefix}
-is @code{/alpha/beta/gamma/omega/}, and @var{progname} is @code{/red/green/blue/gcc},
-then this function will return @code{/red/green/blue/../../omega/}.
+@c make-relative-prefix.c:24
+@deftypefn Extension {const char*} make_relative_prefix (const char *@var{progname}, const char *@var{bin_prefix}, const char *@var{prefix})
-The return value is normally allocated via @code{malloc}. If no relative prefix
-can be found, return @code{NULL}.
+Given three paths @var{progname}, @var{bin_prefix}, @var{prefix},
+return the path that is in the same position relative to
+@var{progname}'s directory as @var{prefix} is relative to
+@var{bin_prefix}. That is, a string starting with the directory
+portion of @var{progname}, followed by a relative pathname of the
+difference between @var{bin_prefix} and @var{prefix}.
+
+If @var{progname} does not contain any directory separators,
+@code{make_relative_prefix} will search @env{PATH} to find a program
+named @var{progname}. Also, if @var{progname} is a symbolic link,
+the symbolic link will be resolved.
+
+For example, if @var{bin_prefix} is @code{/alpha/beta/gamma/gcc/delta},
+@var{prefix} is @code{/alpha/beta/gamma/omega/}, and @var{progname} is
+@code{/red/green/blue/gcc}, then this function will return
+@code{/red/green/blue/../../omega/}.
+
+The return value is normally allocated via @code{malloc}. If no
+relative prefix can be found, return @code{NULL}.
@end deftypefn
@deftypefn Extension {const char*} make_relative_prefix (const char *@var{progname}, const char *@var{bin_prefix}, const char *@var{prefix})
-Given three strings @var{progname}, @var{bin_prefix}, @var{prefix}, return a string
-that gets to @var{prefix} starting with the directory portion of @var{progname} and
-a relative pathname of the difference between @var{bin_prefix} and @var{prefix}.
-
-For example, if @var{bin_prefix} is @code{/alpha/beta/gamma/gcc/delta}, @var{prefix}
-is @code{/alpha/beta/gamma/omega/}, and @var{progname} is @code{/red/green/blue/gcc},
-then this function will return @code{/red/green/blue/../../omega/}.
-
-The return value is normally allocated via @code{malloc}. If no relative prefix
-can be found, return @code{NULL}.
+Given three paths @var{progname}, @var{bin_prefix}, @var{prefix},
+return the path that is in the same position relative to
+@var{progname}'s directory as @var{prefix} is relative to
+@var{bin_prefix}. That is, a string starting with the directory
+portion of @var{progname}, followed by a relative pathname of the
+difference between @var{bin_prefix} and @var{prefix}.
+
+If @var{progname} does not contain any directory separators,
+@code{make_relative_prefix} will search @env{PATH} to find a program
+named @var{progname}. Also, if @var{progname} is a symbolic link,
+the symbolic link will be resolved.
+
+For example, if @var{bin_prefix} is @code{/alpha/beta/gamma/gcc/delta},
+@var{prefix} is @code{/alpha/beta/gamma/omega/}, and @var{progname} is
+@code{/red/green/blue/gcc}, then this function will return
+@code{/red/green/blue/../../omega/}.
+
+The return value is normally allocated via @code{malloc}. If no
+relative prefix can be found, return @code{NULL}.
@end deftypefn
int prog_num, bin_num, prefix_num;
int i, n, common;
int needed_len;
- char *ret, *ptr;
+ char *ret, *ptr, *full_progname = NULL;
if (progname == NULL || bin_prefix == NULL || prefix == NULL)
return NULL;
- prog_dirs = split_directories (progname, &prog_num);
- bin_dirs = split_directories (bin_prefix, &bin_num);
- if (bin_dirs == NULL || prog_dirs == NULL)
- return NULL;
-
/* If there is no full pathname, try to find the program by checking in each
of the directories specified in the PATH environment variable. */
- if (prog_num == 1)
+ if (lbasename (progname) == progname)
{
char *temp;
#endif
)
{
- free_split_directories (prog_dirs);
progname = nstore;
- prog_dirs = split_directories (progname, &prog_num);
- if (prog_dirs == NULL)
- {
- free_split_directories (bin_dirs);
- return NULL;
- }
break;
}
}
}
+ full_progname = lrealpath (progname);
+ if (full_progname == NULL)
+ return NULL;
+
+ prog_dirs = split_directories (full_progname, &prog_num);
+ bin_dirs = split_directories (bin_prefix, &bin_num);
+ free (full_progname);
+ if (bin_dirs == NULL || prog_dirs == NULL)
+ return NULL;
+
/* Remove the program name from comparison of directory names. */
prog_num--;
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