diff -Nur mt-st-1.1_old/mt.c mt-st-1.1/mt.c
--- mt-st-1.1_old/mt.c	2018-08-09 12:47:25.997552769 -0400
+++ mt-st-1.1/mt.c	2018-08-09 12:49:02.764150055 -0400
@@ -19,6 +19,7 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <sys/types.h>
+#include <sys/sysmacros.h>
 #include <sys/ioctl.h>
 #include <sys/stat.h>
 #include <sys/utsname.h>