From 0d7822e7963a7c445ba3bebd8125f26b415c21c7 Mon Sep 17 00:00:00 2001
From: Alexey Neyman <stilor@att.net>
Date: Sun, 15 Apr 2018 14:29:37 -0700
Subject: Require libtool be present

Signed-off-by: Alexey Neyman <stilor@att.net>

diff --git a/configure.ac b/configure.ac
index 5cb82a8..765eae1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -167,7 +167,7 @@ CTNG_PROG_VERSION_REQ_ANY([MAKE],
     [make_3_81_or_newer])
 
 # Check other companion tools that we may or may not build.
-CTNG_PROG_VERSION([LIBTOOL],
+CTNG_PROG_VERSION_REQ_STRICT([LIBTOOL],
     [GNU libtool >= 2.4],
     [libtool],
     [glibtool libtool],
-- 
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