From d1d65344af467fe0a0608ac254bac94ebcdd3229 Mon Sep 17 00:00:00 2001
From: Dirk Zimoch <dirk.zimoch@psi.ch>
Date: Fri, 16 Nov 2018 12:02:33 +0100
Subject: [PATCH] define feature test macro to ensure vsnprintf is available

---
 src/StreamBuffer.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/StreamBuffer.cc b/src/StreamBuffer.cc
index 861f6d7..b9f0ac8 100644
--- a/src/StreamBuffer.cc
+++ b/src/StreamBuffer.cc
@@ -17,6 +17,11 @@
 *                                                              *
 ***************************************************************/
 
+// Make sure that vsnprintf is available
+#ifndef _BSD_SOURCE
+#define _BSD_SOURCE
+#endif
+
 #include "StreamBuffer.h"
 #include "StreamError.h"