--- fbsd_sup.c.orig	2000-04-04 06:42:44.000000000 +1000
+++ fbsd_sup.c	2022-10-04 22:44:03.000000000 +1100
@@ -1,4 +1,5 @@
 #include <ctype.h>
+#include <stdlib.h>
 #include "def.h"
 #include "hardware.h"