--- a/src/hotspot/share/utilities/macros.hpp	Mon Oct 30 16:37:53 2017 +0100
+++ b/src/hotspot/share/utilities/macros.hpp	Tue Oct 31 11:55:09 2017 -0400
@@ -322,7 +322,9 @@
 #endif
 
 #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__)
+#ifndef BSD
 #define BSD
+#endif // BSD defined in <sys/param.h>
 #define BSD_ONLY(code) code
 #define NOT_BSD(code)
 #else