libatomic_ops: fix build failure seen with toolchain without threads support

From 7e940ce34ff4de254d460344f1a1a486a14fb045 Mon Sep 17 00:00:00 2001

From: Gilles Talis <gilles.talis@gmail.com>

Date: Wed, 22 May 2013 16:21:26 -0700

Subject: [PATCH] Fix build failure seen when using toolchain without threads support

Signed-off-by: Gilles Talis <gilles.talis@gmail.com>

---

 src/atomic_ops.c |    4 ++++

 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/src/atomic_ops.c b/src/atomic_ops.c

index b6731a2..5769643 100644

--- a/src/atomic_ops.c

+++ b/src/atomic_ops.c

@@ -48,7 +48,9 @@

 #undef AO_REQUIRE_CAS

+#if defined(AO_USE_PTHREAD_DEFS)

 #include <pthread.h>

+#endif

 #ifndef AO_USE_NO_SIGNALS

 # include <signal.h>

@@ -72,11 +74,13 @@

 # include "atomic_ops/sysdeps/standard_ao_double_t.h"

 #endif

+#if defined(AO_USE_PTHREAD_DEFS)

 /*

  * Lock for pthreads-based implementation.

  */

 pthread_mutex_t AO_pt_lock = PTHREAD_MUTEX_INITIALIZER;

+#endif

 /*

  * Out of line compare-and-swap emulation based on test and set.

-- 

1.7.4.1