diff --git a/poky/meta/classes/nativesdk.bbclass b/poky/meta/classes/nativesdk.bbclass
index f25b0c3..03135ac 100644
--- a/poky/meta/classes/nativesdk.bbclass
+++ b/poky/meta/classes/nativesdk.bbclass
@@ -100,6 +100,8 @@
     clsextend.map_packagevars()
     clsextend.map_variable("PROVIDES")
     clsextend.map_regexp_variable("PACKAGES_DYNAMIC")
+    d.setVar("LIBCEXTENSION", "")
+    d.setVar("ABIEXTENSION", "")
 }
 
 addhandler nativesdk_virtclass_handler