diff -Nru ruby-1.8.7-p71.orig/configure ruby-1.8.7-p71/configure
--- ruby-1.8.7-p71.orig/configure	2008-08-08 08:26:41.000000000 +0200
+++ ruby-1.8.7-p71/configure	2008-08-08 08:26:57.000000000 +0200
@@ -17676,7 +17676,7 @@
 _ACEOF
 
 else
-    arch="${target_cpu}-${target_os}"
+    arch="${target_os}"
     cat >>confdefs.h <<_ACEOF
 #define RUBY_PLATFORM "${arch}"
 _ACEOF