--- Makefile.am.orig	2011-03-05 18:38:11.000000000 +0200
+++ Makefile.am	2013-03-20 10:13:28.517831100 +0200
@@ -2,4 +2,6 @@
 # have all needed files, that a GNU package needs
 AUTOMAKE_OPTIONS = foreign 1.4
 
+ACLOCAL_AMFLAGS= -I m4
+
 SUBDIRS = src doc test