diff -urN zhcon-0.2.3.GENTOO/src/inputclient.h zhcon-0.2.3/src/inputclient.h
--- zhcon-0.2.3.GENTOO/src/inputclient.h	2002-05-12 12:58:28.000000000 +0900
+++ zhcon-0.2.3/src/inputclient.h	2004-03-14 17:50:44.581216200 +0900
@@ -20,6 +20,7 @@
 #define INPUTCLIENT_H
 
 #include <string>
+#include <assert.h>
 #include "console.h"
 
 /**
diff -urN zhcon-0.2.3.GENTOO/src/mouse.cpp zhcon-0.2.3/src/mouse.cpp
--- zhcon-0.2.3.GENTOO/src/mouse.cpp	2002-05-27 11:51:02.000000000 +0900
+++ zhcon-0.2.3/src/mouse.cpp	2004-03-14 17:51:21.927538696 +0900
@@ -19,6 +19,7 @@
 #include "debug.h"
 #include "mouse.h"
 #include <sys/signal.h>
+#include <assert.h>
 
 #if defined(__FreeBSD__)
 Mouse* Mouse::pMouse = NULL;
diff -urN zhcon-0.2.3.GENTOO/src/zhcon.cpp zhcon-0.2.3/src/zhcon.cpp
--- zhcon-0.2.3.GENTOO/src/zhcon.cpp	2003-04-21 22:42:31.000000000 +0900
+++ zhcon-0.2.3/src/zhcon.cpp	2004-03-14 17:50:15.836586048 +0900
@@ -47,6 +47,7 @@
 #include <stdexcept>
 #include <algorithm>
 #include <locale.h>
+#include <assert.h>
 
 #include "global.h"
 #include "console.h"