From 892a6dfc794599ac05c1280727eda22397a73a98 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Mon, 20 Jun 2016 10:20:13 +0200
Subject: use c99

---
 configure.ac | 1 +
 1 file changed, 1 insertion(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 850bdf6c..c862b544 100644
--- a/configure.ac
+++ b/configure.ac
@@ -19,6 +19,7 @@ LT_INIT
 
 # Checks for programs.
 AC_PROG_CC
+AC_PROG_CC_C99
 
 CFLAGS="-Wall $CFLAGS"
 
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