-# serial 3
+# serial 6
# See if we need to provide symlink replacement.
-dnl Copyright (C) 2009, 2010 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2014 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_FUNC_SYMLINK],
[
AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CHECK_FUNCS_ONCE([symlink])
dnl The best we can do on mingw is provide a dummy that always fails, so
dnl that compilation can proceed with fewer ifdefs. On FreeBSD 7.2, AIX 7.1,
dnl and Solaris 9, we want to fix a bug with trailing slash handling.
if test $ac_cv_func_symlink = no; then
HAVE_SYMLINK=0
- AC_LIBOBJ([symlink])
else
AC_CACHE_CHECK([whether symlink handles trailing slash correctly],
[gl_cv_func_symlink_works],
[AC_RUN_IFELSE(
[AC_LANG_PROGRAM(
[[#include <unistd.h>
-]], [[if (!symlink ("a", "conftest.link/")) return 1;
- if (symlink ("conftest.f", "conftest.lnk2")) return 2;
- if (!symlink ("a", "conftest.lnk2/")) return 3;]])],
+ ]],
+ [[int result = 0;
+ if (!symlink ("a", "conftest.link/"))
+ result |= 1;
+ if (symlink ("conftest.f", "conftest.lnk2"))
+ result |= 2;
+ else if (!symlink ("a", "conftest.lnk2/"))
+ result |= 4;
+ return result;
+ ]])],
[gl_cv_func_symlink_works=yes], [gl_cv_func_symlink_works=no],
- [gl_cv_func_symlink_works="guessing no"])
+ [case "$host_os" in
+ # Guess yes on glibc systems.
+ *-gnu*) gl_cv_func_symlink_works="guessing yes" ;;
+ # If we don't know, assume the worst.
+ *) gl_cv_func_symlink_works="guessing no" ;;
+ esac
+ ])
rm -f conftest.f conftest.link conftest.lnk2])
- if test "$gl_cv_func_symlink_works" != yes; then
- REPLACE_SYMLINK=1
- AC_LIBOBJ([symlink])
- fi
+ case "$gl_cv_func_symlink_works" in
+ *yes) ;;
+ *)
+ REPLACE_SYMLINK=1
+ ;;
+ esac
fi
])