Fix NetBSD build.

Makefile.system

@@ -129,7 +129,7 @@ MD5SUM = md5 -r
 endif
 
 ifeq ($(OSNAME), NetBSD)
-MD5SUM = md5 -r
+MD5SUM = md5 -n
 endif
 
 ifeq ($(OSNAME), Linux)

common.h

@@ -351,7 +351,12 @@ typedef int blasint;
 #endif
 
 #define MMAP_ACCESS (PROT_READ | PROT_WRITE)
+
+#ifdef __NetBSD__
+#define MMAP_POLICY (MAP_PRIVATE | MAP_ANON)
+#else
 #define MMAP_POLICY (MAP_PRIVATE | MAP_ANONYMOUS)
+#endif
 
 #include "param.h"
 #include "common_param.h"

exports/Makefile

@@ -119,7 +119,8 @@ so : ../$(LIBSONAME)
 
 endif
 
-ifeq ($(OSNAME), FreeBSD)
+#http://stackoverflow.com/questions/7656425/makefile-ifeq-logical-or
+ifeq ($(OSNAME), $(filter $(OSNAME),FreeBSD NetBSD))
 
 so : ../$(LIBSONAME)