$(MAKE) -C $(patsubst %-install,%,$@) install MAKEFLAGS="$(BUILD_MAKEFLAGS)"
%-clean: $(STAMP_DIR) $(TARGET_DIR)
$(MAKE) -C $(patsubst %-clean,%,$@) clean MAKEFLAGS="$(BUILD_MAKEFLAGS)"
$(MAKE) -C $(patsubst %-install,%,$@) install MAKEFLAGS="$(BUILD_MAKEFLAGS)"
%-clean: $(STAMP_DIR) $(TARGET_DIR)
$(MAKE) -C $(patsubst %-clean,%,$@) clean MAKEFLAGS="$(BUILD_MAKEFLAGS)"