--- configure.ac	2015-06-20 13:03:45.000000000 +0200
+++ configure.ac.new	2015-10-17 11:44:33.481244447 +0200
@@ -1,7 +1,5 @@
 AC_INIT
 
-orig_CFLAGS="$CFLAGS"
-
 AC_CONFIG_SRCDIR([ev_epoll.c])
 
 dnl also update ev.h!
@@ -9,6 +7,8 @@
 AC_CONFIG_HEADERS([config.h])
 AM_MAINTAINER_MODE
 
+orig_CFLAGS="$CFLAGS"
+
 AC_PROG_CC
 
 dnl Supply default CFLAGS, if not specified