dnl Run a program to determine whether link(2) follows symlinks.
dnl Set LINK_FOLLOWS_SYMLINKS accordingly.
-# Copyright (C) 1999-2001, 2004-2006, 2009 Free Software Foundation, Inc.
+# Copyright (C) 1999-2001, 2004-2006, 2009-2010 Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
gl_link_follows_symlinks=0 # assume GNU behavior
if test $ac_cv_func_readlink = yes; then
AC_CACHE_CHECK([whether link(2) dereferences a symlink],
- gl_cv_func_link_follows_symlink,
+ gl_cv_func_link_follows_symlink,
[
# Create a regular file.
echo > conftest.file
# include <stdlib.h>
# define SAME_INODE(Stat_buf_1, Stat_buf_2) \
- ((Stat_buf_1).st_ino == (Stat_buf_2).st_ino \
- && (Stat_buf_1).st_dev == (Stat_buf_2).st_dev)
+ ((Stat_buf_1).st_ino == (Stat_buf_2).st_ino \
+ && (Stat_buf_1).st_dev == (Stat_buf_2).st_dev)
- int
- main ()
- {
- const char *file = "conftest.file";
- const char *sym = "conftest.sym";
- const char *hard = "conftest.hard";
- struct stat sb_file, sb_hard;
+ int
+ main ()
+ {
+ const char *file = "conftest.file";
+ const char *sym = "conftest.sym";
+ const char *hard = "conftest.hard";
+ struct stat sb_file, sb_hard;
- /* Create a symlink to the regular file. */
- if (symlink (file, sym))
- return 2;
+ /* Create a symlink to the regular file. */
+ if (symlink (file, sym))
+ return 2;
- /* Create a hard link to that symlink. */
- if (link (sym, hard))
- return 3;
+ /* Create a hard link to that symlink. */
+ if (link (sym, hard))
+ return 3;
- if (lstat (hard, &sb_hard))
- return 4;
- if (lstat (file, &sb_file))
- return 5;
+ if (lstat (hard, &sb_hard))
+ return 4;
+ if (lstat (file, &sb_file))
+ return 5;
- /* If the dev/inode of hard and file are the same, then
- the link call followed the symlink. */
- return SAME_INODE (sb_hard, sb_file) ? 1 : 0;
- }
+ /* If the dev/inode of hard and file are the same, then
+ the link call followed the symlink. */
+ return SAME_INODE (sb_hard, sb_file) ? 1 : 0;
+ }
]])],
- [gl_cv_func_link_follows_symlink=no], dnl GNU behavior
- [gl_cv_func_link_follows_symlink=yes], dnl Followed link/compile failed
- [gl_cv_func_link_follows_symlink=unknown] dnl We're cross compiling.
+ [gl_cv_func_link_follows_symlink=no], dnl GNU behavior
+ [gl_cv_func_link_follows_symlink=yes], dnl Followed link/compile failed
+ [gl_cv_func_link_follows_symlink=unknown] dnl We're cross compiling.
)
rm -f conftest.file conftest.sym conftest.hard
])