From a52bdd9d7b1b3e24d1eff9e52020c05cef6602dd Mon Sep 17 00:00:00 2001
From: Martin Kroeker <martin@ruby.chemie.uni-freiburg.de>
Date: Mon, 13 Apr 2020 12:22:35 +0200
Subject: [PATCH] Add (empty) read barrier definition

---
 common_x86_64.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/common_x86_64.h b/common_x86_64.h
index 958e9caed..0247674cd 100644
--- a/common_x86_64.h
+++ b/common_x86_64.h
@@ -63,13 +63,16 @@
 #ifdef __GNUC__
 #define MB do { __asm__ __volatile__("": : :"memory"); } while (0)
 #define WMB do { __asm__ __volatile__("": : :"memory"); } while (0)
+#define RMB
 #else
 #define MB do {} while (0)
 #define WMB do {} while (0)
+#define RMB
 #endif
 
 static void __inline blas_lock(volatile BLASULONG *address){
 
+	
 #ifndef C_MSVC
   int ret;
 #else