X-Git-Url: http://git.liburcu.org/?p=urcu.git;a=blobdiff_plain;f=urcu%2Farch%2Fx86.h;h=aac8ca1384b63f4ce321680cffbcaca661a0f16c;hp=b4d3694fdffb896fa3773f30ad8d0777ae9836a4;hb=2af1c19e6a553878fcb2a5106f050d5ed7ac0f54;hpb=3fa182868e25068413fdaa1bef290365e99ab246

diff --git a/urcu/arch/x86.h b/urcu/arch/x86.h
index b4d3694..aac8ca1 100644
--- a/urcu/arch/x86.h
+++ b/urcu/arch/x86.h
@@ -91,15 +91,13 @@ static inline caa_cycles_t caa_get_cycles(void)
 }
 
 /*
- * 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.
  */
+#if (defined(__linux__) && !defined(__NR_membarrier))
 #if (CAA_BITS_PER_LONG == 32)
-#ifndef __NR_membarrier
 #define __NR_membarrier		375
-#endif
 #else
-#ifndef __NR_membarrier
 #define __NR_membarrier		324
 #endif
 #endif