--- configure.orig	2011-11-06 16:48:47.328421986 +0100
+++ configure	2011-11-06 16:48:25.799199157 +0100
@@ -17390,7 +17390,7 @@
 _ACEOF
 
 else
-    arch="${target_cpu}-${target_os}"
+    arch="${target_os}"
     cat >>confdefs.h <<_ACEOF
 #define RUBY_PLATFORM "${arch}"
 _ACEOF