From b89c781637503ec66117eb3b887a3755d42f0f46 Mon Sep 17 00:00:00 2001
From: Martin Kroeker <martin@ruby.chemie.uni-freiburg.de>
Date: Sun, 7 Jul 2019 16:04:45 +0200
Subject: [PATCH] Fix surprising behaviour of NO_AFFINITY=0

---
 Makefile.system | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Makefile.system b/Makefile.system
index 16791bcc2..09a648e4a 100644
--- a/Makefile.system
+++ b/Makefile.system
@@ -1124,8 +1124,12 @@ endif
 endif
 
 ifdef NO_AFFINITY
+ifeq ($(NO_AFFINITY), 0)
+override undefine NO_AFFINITY
+else
 CCOMMON_OPT	+= -DNO_AFFINITY
 endif
+endif
 
 ifdef FUNCTION_PROFILE
 CCOMMON_OPT	+= -DFUNCTION_PROFILE