.PHONY: www/js/escalator.js www/js/escalator.js: $(shell find src -name "*.js") mkdir -p www/js cat \ src/open.js \ src/utils.js \ src/screen.js \ src/gui.js \ src/sprite.js \ src/collectable.js \ src/scene.js \ src/box.js \ src/platform.js \ src/menu.js \ src/game.js \ src/main.js \ src/close.js \ > www/js/escalator.js