diff -Nru ruby-1.9.1-p129.orig/configure ruby-1.9.1-p129/configure
--- ruby-1.9.1-p129.orig/configure	2009-06-11 16:48:17.886630091 +0200
+++ ruby-1.9.1-p129/configure	2009-06-11 16:48:39.136631089 +0200
@@ -22515,7 +22515,7 @@
 _ACEOF
 
 else
-    arch="${target_cpu}-${target_os}"
+    arch="${target_os}"
     cat >>confdefs.h <<_ACEOF
 #define RUBY_PLATFORM "${arch}"
 _ACEOF