--- Robots/xt-bot/xt-bot-a.cpp.orig	2018-10-20 20:32:42 UTC
+++ Robots/xt-bot/xt-bot-a.cpp
@@ -24,6 +24,7 @@ General Public License for more details.
 ****************************************************************************/
 
 #include <iostream>
+#include <cstring>
 #include <stdlib.h>
 #include <stdio.h>
 #include <math.h>