--- configure.ac.orig	2012-07-18 22:09:06.000000000 +0200
+++ configure.ac	2012-07-18 22:09:23.000000000 +0200
@@ -37,7 +37,7 @@
 AC_SUBST(LT_REVISION, 0)
 AC_SUBST(LT_AGE, 4)
 
-AM_INIT_AUTOMAKE([1.11 -Wall -Werror])
+AM_INIT_AUTOMAKE([1.11 -Wall -Werror -Wno-extra-portability])
 AM_SILENT_RULES([yes])
 AC_PROG_CC
 AC_LIBTOOL_WIN32_DLL