From 0d03735f4a1e73b1dfce10e0c15f798927284f99 Mon Sep 17 00:00:00 2001
From: Eric Blake <eblake@redhat.com>
Date: Tue, 21 Aug 2012 11:10:14 -0600
Subject: [PATCH] build: work with glibc that lacks CPU_COUNT

Building on RHEL 5 warned:

nodeinfo.c: 305: warning: implicit declaration of function 'CPU_COUNT'

This extension macro in <sched.h> was not added until later glibc.

* src/nodeinfo.c (CPU_COUNT): Add fallback implementation.
---
 src/nodeinfo.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/nodeinfo.c b/src/nodeinfo.c
index 84a5d666e3..e3d4a242dd 100644
--- a/src/nodeinfo.c
+++ b/src/nodeinfo.c
@@ -184,6 +184,19 @@ virNodeParseSocket(const char *dir, unsigned int cpu)
     return ret;
 }
 
+# ifndef CPU_COUNT
+static int
+CPU_COUNT(cpu_set_t *set)
+{
+    int i, count = 0;
+
+    for (i = 0; i < CPU_SETSIZE; i++)
+        if (CPU_ISSET(i, set))
+            count++;
+    return count;
+}
+# endif /* !CPU_COUNT */
+
 /* parses a node entry, returning number of processors in the node and
  * filling arguments */
 static int