diff -Nru ruby-1.8.7.orig/configure ruby-1.8.7/configure
--- ruby-1.8.7.orig/configure	2008-06-23 10:12:35.000000000 +0200
+++ ruby-1.8.7/configure	2008-06-23 10:12:55.000000000 +0200
@@ -17608,7 +17608,7 @@
 _ACEOF
 
 else
-    arch="${target_cpu}-${target_os}"
+    arch="${target_os}"
     cat >>confdefs.h <<_ACEOF
 #define RUBY_PLATFORM "${arch}"
 _ACEOF