From 0648a256a23d9a1938adfd5146525ee37618bd70 Mon Sep 17 00:00:00 2001
From: David Heidelberger <david.heidelberger@ixit.cz>
Date: Sat, 8 Mar 2014 23:29:15 +0100
Subject: [PATCH 2/7] in case HZ undefined, define it

---
 ping_common.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ping_common.c b/ping_common.c
index 8d6b145..c8874d7 100644
--- a/ping_common.c
+++ b/ping_common.c
@@ -3,6 +3,10 @@
 #include <sched.h>
 #include <math.h>
 
+#ifndef HZ
+#define HZ sysconf(_SC_CLK_TCK)
+#endif
+
 int options;
 
 int mark;
-- 
1.9.0