--- rpl/configure.ac	2013/07/05 08:08:32	1.71
+++ rpl/configure.ac	2013/07/11 11:56:32	1.72
@@ -1314,7 +1314,7 @@ case $HOST in
 	break;;
 
 	*)
-		ARCH=unknown
+		ARCH=$(echo $HOST | cut -f1 -d-)
 	break ;;
 esac