$NetBSD: patch-ac,v 1.2 2011/10/04 18:15:30 bsiegert Exp $

--- configure.ac.orig	2011-06-15 11:41:30.000000000 +0000
+++ configure.ac
@@ -4,6 +4,7 @@ AC_CANONICAL_TARGET([])
 AC_CONFIG_SRCDIR(src/atomic_ops.c)
 AM_INIT_AUTOMAKE
 AC_PROG_RANLIB
+AC_PROG_LIBTOOL
 
 AM_CONFIG_HEADER(src/config.h)
 
