--- ./affinity.c-old	2014-10-20 07:12:53.000000000 -0700
+++ ./affinity.c	2019-06-18 16:34:10.053956253 -0700
@@ -40,6 +40,7 @@
 #include <linux/rtnetlink.h>
 #include <linux/netlink.h>
 #include <sys/types.h>
+#include <sys/sysmacros.h>
 #include <ctype.h>
 #include <assert.h>
 #include <regex.h>