From c2a8dffa2b70af3ba3fd63bd876be6dfb114b1dd Mon Sep 17 00:00:00 2001
From: "Brian P. Walenz" <thebri@gmail.com>
Date: Sat, 21 Jul 2018 01:13:00 -0400
Subject: [PATCH] Guard against multiple inclusion.

---
 src/utility/system.H | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/utility/system.H b/src/utility/system.H
index f76bece3c..0b5bce248 100644
--- a/src/utility/system.H
+++ b/src/utility/system.H
@@ -27,8 +27,13 @@
  *  full conditions and disclaimers for each license.
  */
 
+#ifndef SYSTEM_H
+#define SYSTEM_H
+
 #include "AS_global.H"
 
+
+
 double   getTime(void);
 
 double   getCPUTime(void);
@@ -38,3 +43,7 @@ uint64   getProcessSize(void);
 uint64   getProcessSizeLimit(void);
 
 uint64   getPhysicalMemorySize(void);
+
+
+
+#endif  //  SYSTEM_H