--- apache-log4cxx-0.10.0/src/main/include/log4cxx/logstring.h	
+++ apache-log4cxx-0.10.0/src/main/include/log4cxx/logstring.h	
@@ -25,6 +25,7 @@
 
 
 #include <string>
+#include <cstring>
 #include <log4cxx/log4cxx.h>
 
 #if LOG4CXX_LOGCHAR_IS_WCHAR && LOG4CXX_LOGCHAR_IS_UTF8 && LOG4CXX_LOGCHAR_IS_UNICHAR