$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/app/*)
$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/APPS/*)
+# Move to libc++ as the default STL.
+$(call add-clean-step, rm -rf $(OUT_DIR))
+
+# dex2oat instruction-set changes
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/build.prop)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/root/default.prop)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/recovery/root/default.prop)
+
+# Make GNU++11 the default standard version. This requires a cleanspec because
+# char16_t/char32_t will be real types now instead of typedefs, which means
+# an ABI change since the names will mangle differently.
+$(call add-clean-step, rm -rf $(OUT_DIR))
+
# ************************************************
# NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
# ************************************************