diff -Nru ruby-1.8.6.orig/configure ruby-1.8.6/configure
--- ruby-1.8.6.orig/configure	2007-03-13 16:54:40.000000000 +0100
+++ ruby-1.8.6/configure	2007-03-13 16:54:52.000000000 +0100
@@ -16957,7 +16957,7 @@
 _ACEOF
 
 else
-    arch="${target_cpu}-${target_os}"
+    arch="${target_os}"
     cat >>confdefs.h <<_ACEOF
 #define RUBY_PLATFORM "${arch}"
 _ACEOF