2011-02-25 20:05:36 +00:00
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# serial 7
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[ChangeLog]
Work around some portability problems with symlinks.
* Makefile.in (GNULIB_MODULES): Add lstat, readlink, symlink.
* configure.in (lstat, HAVE_LSTAT): Remove special hack.
* lib/lstat.c, lib/readlink.c, lib/stat.c, lib/symlink.c:
* m4/dos.m4, m4/lstat.m4, m4/readlink.m4, m4/stat.m4, m4/symlink.m4:
New files, automatically generated from gnulib.
* aclocal.m4, configure, lib/Makefile.in, lib/gnulib.mk:
* lib/stdlib.in.h, m4/gl-comp.m4, m4/stdlib_h.m4: Regenerate.
2011-02-22 Paul Eggert <eggert@cs.ucla.edu>
[src/ChangeLog]
Work around some portability problems with symlinks.
* fileio.c (Frename_file, Fmake_symbolic_link, Ffile_symlink_p):
Simplify the code by assuming that the readlink and symlink calls
exist, even if they always fail on this host.
(Ffile_readable_p): Likewise, for fifos.
* config.in: Regenerate.
2011-02-22 19:30:07 +00:00
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# Copyright (C) 2009-2011 Free Software Foundation, Inc.
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#
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# This file is free software; the Free Software Foundation
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# gives unlimited permission to copy and/or distribute it,
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# with or without modifications, as long as this notice is preserved.
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AC_DEFUN([gl_FUNC_STAT],
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[
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AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
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AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
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AC_CHECK_FUNCS_ONCE([lstat])
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dnl mingw is the only known platform where stat(".") and stat("./") differ
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AC_CACHE_CHECK([whether stat handles trailing slashes on directories],
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[gl_cv_func_stat_dir_slash],
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[AC_RUN_IFELSE(
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[AC_LANG_PROGRAM(
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[[#include <sys/stat.h>
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]], [[struct stat st; return stat (".", &st) != stat ("./", &st);]])],
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[gl_cv_func_stat_dir_slash=yes], [gl_cv_func_stat_dir_slash=no],
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[case $host_os in
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mingw*) gl_cv_func_stat_dir_slash="guessing no";;
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*) gl_cv_func_stat_dir_slash="guessing yes";;
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esac])])
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dnl AIX 7.1, Solaris 9 mistakenly succeed on stat("file/")
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dnl FreeBSD 7.2 mistakenly succeeds on stat("link-to-file/")
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AC_CACHE_CHECK([whether stat handles trailing slashes on files],
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[gl_cv_func_stat_file_slash],
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[touch conftest.tmp
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# Assume that if we have lstat, we can also check symlinks.
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if test $ac_cv_func_lstat = yes; then
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ln -s conftest.tmp conftest.lnk
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fi
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AC_RUN_IFELSE(
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[AC_LANG_PROGRAM(
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[[#include <sys/stat.h>
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]], [[int result = 0;
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struct stat st;
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if (!stat ("conftest.tmp/", &st))
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result |= 1;
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#if HAVE_LSTAT
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if (!stat ("conftest.lnk/", &st))
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result |= 2;
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#endif
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return result;
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]])],
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[gl_cv_func_stat_file_slash=yes], [gl_cv_func_stat_file_slash=no],
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[gl_cv_func_stat_file_slash="guessing no"])
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rm -f conftest.tmp conftest.lnk])
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case $gl_cv_func_stat_dir_slash in
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*no) REPLACE_STAT=1
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AC_DEFINE([REPLACE_FUNC_STAT_DIR], [1], [Define to 1 if stat needs
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help when passed a directory name with a trailing slash]);;
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esac
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case $gl_cv_func_stat_file_slash in
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*no) REPLACE_STAT=1
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AC_DEFINE([REPLACE_FUNC_STAT_FILE], [1], [Define to 1 if stat needs
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help when passed a file name with a trailing slash]);;
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esac
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if test $REPLACE_STAT = 1; then
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AC_LIBOBJ([stat])
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dnl Prerequisites of lib/stat.c.
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AC_REQUIRE([AC_C_INLINE])
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fi
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])
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