From 2b31cf5bd272216e4b20c1463bb696b4c1e9a8e5 Mon Sep 17 00:00:00 2001
From: Jason Evans <jasone@canonware.com>
Date: Thu, 29 Jun 2017 13:56:22 -0700
Subject: [PATCH] Enforce minimum autoconf version (currently 2.68).

This resolves #912.
---
 configure.ac | 1 +
 1 file changed, 1 insertion(+)

diff --git a/configure.ac b/configure.ac
index 496631a6..1551ded8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,5 @@
 dnl Process this file with autoconf to produce a configure script.
+AC_PREREQ(2.68)
 AC_INIT([Makefile.in])
 
 AC_CONFIG_AUX_DIR([build-aux])