diff -r fedc89081b57 -r 81767abf7e6a make/MainSupport.gmk
--- a/make/MainSupport.gmk	Tue Feb 12 14:08:07 2019 -0800
+++ b/make/MainSupport.gmk	Tue Feb 12 08:40:43 2019 +0100
@@ -54,6 +54,13 @@
 	@$(PRINTF) " done\n"
 endef
 
+define CleanMakeSupportDir
+	@$(PRINTF) "Cleaning $(strip $1) make support artifacts ..."
+	@$(PRINTF) "\n" $(LOG_DEBUG)
+	$(RM) -r $(MAKESUPPORT_OUTPUTDIR)/$(strip $1)
+	@$(PRINTF) " done\n"
+endef
+
 define CleanTest
 	@$(PRINTF) "Cleaning test $(strip $1) ..."
 	@$(PRINTF) "\n" $(LOG_DEBUG)