diff -Naur lisp-kernel/lisp-debug.c compiling_lisp_kernel/lisp-debug.c
--- lisp-kernel/lisp-debug.c	2004-05-03 09:45:31.000000000 +0200
+++ compiling_lisp_kernel/lisp-debug.c	2006-10-30 00:15:22.000000000 +0100
@@ -17,6 +17,7 @@
 #include "lisp.h"
 #include "lisp-exceptions.h"
 #include "lisp_globals.h"
+#include "lispdcmd.h"
 #include "area.h"
 #include "Threads.h"
 #include <ctype.h>