diff -Nru ruby-1.8.5-p12.orig/configure ruby-1.8.5-p12/configure
--- ruby-1.8.5-p12.orig/configure	2006-12-27 19:03:43.539393663 +0100
+++ ruby-1.8.5-p12/configure	2006-12-27 19:03:56.889006998 +0100
@@ -19402,7 +19402,7 @@
 _ACEOF
 
 else
-    arch="${target_cpu}-${target_os}"
+    arch="${target_os}"
     cat >>confdefs.h <<_ACEOF
 #define RUBY_PLATFORM "${arch}"
 _ACEOF