--- Makefile.am.orig	2016-05-20 11:41:06 UTC
+++ Makefile.am
@@ -20,6 +20,8 @@
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 ##
 
+ACLOCAL_AMFLAGS   =    -I m4
+
 AUTOMAKE_OPTIONS  =    foreign no-dependencies  
 
 WARN_CFLAGS       =    @WARN_CFLAGS@