--- libaitrpc/example/tcliext.c	2015/01/21 21:14:09	1.1.2.2
+++ libaitrpc/example/tcliext.c	2015/01/21 21:17:05	1.2
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <unistd.h>
 #include <sys/time.h>
 #include <pthread.h>
 #include <aitrpc.h>