From a63192479dc18a4249f3975e556ea3986a3575ca Mon Sep 17 00:00:00 2001
From: Martin Willi <martin@revosec.ch>
Date: Fri, 10 Aug 2012 16:55:20 +0200
Subject: [PATCH] If _POSIX_SPIN_LOCKS is defined as -1, it is not available

---
 src/libstrongswan/threading/spinlock.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/libstrongswan/threading/spinlock.c b/src/libstrongswan/threading/spinlock.c
index 14ac49eb4..812cf696b 100644
--- a/src/libstrongswan/threading/spinlock.c
+++ b/src/libstrongswan/threading/spinlock.c
@@ -23,6 +23,10 @@
 #include "mutex.h"
 #include "lock_profiler.h"
 
+#if defined(_POSIX_SPIN_LOCKS) && _POSIX_SPIN_LOCKS == -1
+#undef _POSIX_SPIN_LOCKS
+#endif
+
 typedef struct private_spinlock_t private_spinlock_t;
 
 /**