--- ddd/comm-manag.C.orig	Wed Feb 11 17:25:07 2009
+++ ddd/comm-manag.C	Mon Sep 28 09:40:49 2009
@@ -82,6 +82,7 @@ char comm_manager_rcsid[] =
 
 #include <ctype.h>
 #include <fstream>
+#include <unistd.h>
 
 
 //-----------------------------------------------------------------------------