--- Robots/xt-bot/xt-bot-b.cpp.orig	2018-10-20 20:24:50 UTC
+++ Robots/xt-bot/xt-bot-b.cpp
@@ -25,6 +25,7 @@ General Public License for more details.
 ****************************************************************************/
 
 #include <iostream>
+#include <cstring>
 #include <stdlib.h>
 #include <stdio.h>
 #include <math.h>