Fix: only define membarrier system call on Linux

[urcu.git] / urcu / arch / arm.h

diff --git a/urcu/arch/arm.h b/urcu/arch/arm.h
index d7affaabe85685b6c62929073e7baa732ef69a1d..5cbca7d7f1d0d523186b40837ce93ff515615128 100644 (file)
--- a/urcu/arch/arm.h
+++ b/urcu/arch/arm.h
@@ -40,10 +40,10 @@ extern "C" {
 #include <sys/time.h>
 
 /*
 #include <sys/time.h>
 
 /*

- * Define the membarrier system call number if not yet available in the
- * system headers.
+ * On Linux, define the membarrier system call number if not yet available in
+ * the system headers.

  */
  */

-#ifndef __NR_membarrier
+#if (defined(__linux__) && !defined(__NR_membarrier))

 #define __NR_membarrier                389
 #endif
 
 #define __NR_membarrier                389
 #endif