--- argus/ArgusUdt.c~	2015-06-29 15:17:25.000000000 -0500
+++ argus/ArgusUdt.c	2020-02-19 10:45:00.768211138 -0600
@@ -41,7 +41,7 @@
 #include <ArgusModeler.h>
 
 #include <argus/bootp.h>
-struct bootp *bp;
+extern struct bootp *bp;
 
 struct ArgusSystemFlow *
 ArgusCreateUDTFlow (struct ArgusModelerStruct *model, struct udt_header *udt)