diff -Naur yacas-1.2.2-orig/manmake/manripper.cpp yacas-1.2.2/manmake/manripper.cpp
--- yacas-1.2.2-orig/manmake/manripper.cpp	2007-09-04 11:28:19 +0300
+++ yacas-1.2.2/manmake/manripper.cpp	2008-11-05 19:09:28 +0200
@@ -1,6 +1,7 @@
 
 #include <stdio.h>
 #include <ctype.h>
+#include <cstring>
 #include <string>
 #include <map>