diff -up xbase64-3.1.2/configure.in.automake-1_13 xbase64-3.1.2/configure.in
--- xbase64-3.1.2/configure.in.automake-1_13	2013-01-03 00:49:34.017956850 +0100
+++ xbase64-3.1.2/configure.in	2013-01-03 00:54:35.388028275 +0100
@@ -49,7 +49,7 @@ AC_CONFIG_SRCDIR( examples/exfilter.cpp,
 AM_INIT_AUTOMAKE(xbase64, 3.1.2)
 
 # create this header file
-AM_CONFIG_HEADER(xbase64/xbconfig.h:xbase64/xbconfig.in)
+AC_CONFIG_HEADERS(xbase64/xbconfig.h:xbase64/xbconfig.in)
 
 #create a library
 AM_PROG_LIBTOOL