From f9a88a1a61c5fbd9f644b34583afe432519963f5 Mon Sep 17 00:00:00 2001
From: "Sven M. Hallberg" <pesco@khjk.org>
Date: Tue, 19 Aug 2014 14:53:38 +0200
Subject: [PATCH] require C99

---
 configure.ac | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/configure.ac b/configure.ac
index a055f7a..30eafed 100644
--- a/configure.ac
+++ b/configure.ac
@@ -52,6 +52,10 @@ AC_PROG_LN_S
 AC_PROG_MAKE_SET
 AC_PROG_GCC_TRADITIONAL
 
+if test x"$ac_cv_prog_cc_c99" = x"no"; then
+    AC_MSG_ERROR([C99 support is required])
+fi
+
 # -fstack-protector
 AC_ARG_ENABLE([stack-protector],
     [AS_HELP_STRING([--disable-stack-protector],
-- 
2.39.2