--- /dev/null
+if(!dojo._hasResource["dojox.layout.BorderContainer"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dojox.layout.BorderContainer"] = true;
+dojo.provide("dojox.layout.BorderContainer");
+
+console.error("dojox.layout.BorderContainer moved to dijit.layout.BorderContainer");
+
+}