# 4.4.2
$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/build.prop)
+# "L" and beyond.
+# Make libart the default runtime
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/build.prop)
+
+# Rename persist.sys.dalvik.vm.lib to allow new default
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/build.prop)
+
+ # KKWT development
+ $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/build.prop)
+ $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/app/*)
+ $(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/APPS/*)
+
# ************************************************
# NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
# ************************************************