--- old/make/MainSupport.gmk	2019-12-30 17:08:50.662208683 +0100
+++ new/make/MainSupport.gmk	2019-12-30 17:08:50.466209711 +0100
@@ -65,6 +65,13 @@
 	@$(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)