-#ac_neta_haveatfuncs=yes
-#AC_CHECK_FUNCS(openat renameat fstatat unlinkat, ,ac_neta_haveatfuncs=no)
-#if test x"$ac_neta_haveatfuncs" = x"yes" ; then
-# AC_DEFINE([_ATFILE_SOURCE], 1, AT file source)
-#fi
-AC_DEFINE([_ATFILE_SOURCE], 1, AT file source)
-AC_CHECK_FUNCS(openat renameat fstatat unlinkat, ,AC_DEFINE([_ATFILE_SOURCE], 0, AT file source))
+ac_neta_haveatfuncs=yes
+AC_CHECK_FUNCS(openat renameat fstatat unlinkat, , ac_neta_haveatfuncs=no)
+if test x"$ac_neta_haveatfuncs" = x"yes" ; then
+ AC_DEFINE([_ATFILE_SOURCE], 1, AT file source)
+ AC_DEFINE([HAVE_ATFUNCS], 1, whether at funcs are available)
+fi