-# serial 3
+# serial 4
# See if we need to provide readlinkat replacement.
-dnl Copyright (C) 2009-2014 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2015 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_CHECK_FUNCS_ONCE([readlinkat])
if test $ac_cv_func_readlinkat = no; then
HAVE_READLINKAT=0
+ else
+ AC_CACHE_CHECK([whether readlinkat signature is correct],
+ [gl_cv_decl_readlinkat_works],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <unistd.h>
+ /* Check whether original declaration has correct type. */
+ ssize_t readlinkat (int, char const *, char *, size_t);]])],
+ [gl_cv_decl_readlinkat_works=yes],
+ [gl_cv_decl_readlinkat_works=no])])
+ if test "$gl_cv_decl_readlink_works" != yes; then
+ REPLACE_READLINKAT=1
+ fi
fi
])