--- isdn4k-utils-3.27/vbox/src/script.c.orig	2016-04-07 21:18:19.739200807 +0200
+++ isdn4k-utils-3.27/vbox/src/script.c	2016-04-07 21:17:28.845252962 +0200
@@ -19,6 +19,8 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#define USE_INTERP_RESULT 1
+#define USE_INTERP_ERRORLINE 1
 #include <tcl.h>
 #include <unistd.h>
 #include <string.h>