From db4d5b6eb3c26cda28c401fa228db4b1261dc799 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tim=20R=C3=BChsen?= <tim.ruehsen@gmx.de>
Date: Sun, 7 Mar 2021 19:56:36 +0100
Subject: [PATCH] * configure.ac: Add AC_PROG_CC_C99

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

diff --git a/configure.ac b/configure.ac
index 30c6a558..91b3571e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -55,6 +55,7 @@ AM_INIT_AUTOMAKE([subdir-objects dist-lzip])
 
 AC_USE_SYSTEM_EXTENSIONS
 AC_PROG_CC
+AC_PROG_CC_C99
 AM_PROG_CC_C_O
 
 dnl