diff -r dc39960ecfd2 -r 89f16f038b92 config/global/ct-behave.in
--- a/config/global/ct-behave.in	Mon Mar 29 10:03:29 2010 +0200
+++ b/config/global/ct-behave.in	Mon Mar 29 12:06:58 2010 +0200
@@ -11,6 +11,22 @@
     default y if IS_A_BACKEND =  "y" || IS_A_BACKEND =  "Y"
     default n if IS_A_BACKEND != "y" && IS_A_BACKEND != "Y"
 
+config BACKEND_ARCH
+    string
+    option env="CT_BACKEND_ARCH"
+
+if BACKEND && BACKEND_ARCH = ""
+comment "ERROR !!! Backend architecture is NOT set !"
+endif
+
+config BACKEND_KERNEL
+    string
+    option env="CT_BACKEND_KERNEL"
+
+if BACKEND && BACKEND_KERNEL = ""
+comment "ERROR !!! Backend kernel is NOT set !"
+endif
+
 config OBSOLETE
     bool
     prompt "Use obsolete features"