diff -r 7acdd1de5b50 -r 2535545dd450 config/global/ct-behave.in
--- a/config/global/ct-behave.in	Mon Apr 20 21:30:25 2009 +0000
+++ b/config/global/ct-behave.in	Fri Mar 05 09:19:56 2010 +0100
@@ -2,6 +2,15 @@
 
 comment "crosstool-NG behavior"
 
+config IS_A_BACKEND
+    string
+    option env="CT_IS_A_BACKEND"
+
+config BACKEND
+    bool
+    default y if IS_A_BACKEND =  "y" || IS_A_BACKEND =  "Y"
+    default n if IS_A_BACKEND != "y" && IS_A_BACKEND != "Y"
+
 config OBSOLETE
     bool
     prompt "Use obsolete features"