From 630cc035fd8200558a9c37d6538487ae0e532c18 Mon Sep 17 00:00:00 2001
From: Vincent Bernat <vincent@bernat.im>
Date: Thu, 19 Feb 2015 16:30:06 +0100
Subject: [PATCH] configure: enforce the use of C99

---
 configure.ac | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/configure.ac b/configure.ac
index 5d41df3c..bc5f6d67 100644
--- a/configure.ac
+++ b/configure.ac
@@ -44,6 +44,9 @@ LT_INIT
 # Checks for programs.
 AC_PROG_CC
 AC_PROG_CC_C99
+if test x"$ac_cv_prog_cc_c99" = x"no"; then
+  AC_MSG_FAILURE([*** C99 support is mandatory])
+fi
 AC_PROG_CXX
 AM_PROG_CC_C_O
 AC_PROG_LIBTOOL
-- 
2.39.5