This gist accompanies https://github.com/pwenzel/fswatch-makefile. It shows how one might build a tiny build system for a website using a Makefile.

Makefile

# Example Makefile for compiling CSS and Javascript in watched folder

PHONY: optimize

css:
	@cat assets/css/normalize.css assets/css/app.css > public/assets/all.css
	@echo Built all.css

js:
	@cat assets/js/jquery.js assets/js/jquery.cookie.js assets/js/app.js > public/assets/all.js
	@echo Built all.js

watch:
	@echo Watching for changes...
	@fswatch assets/css:assets/js "echo changed && make css js" 

optimize: css js
	@yuicompressor assets/all.css -o assets/all.css
	@yuicompressor assets/all.js -o assets/all.js
	@echo Optimized all.js