[Makefile] Online Concatenate and Compress JavaScript Files

Concatenate and minify/compress JavaScript files via Makefile, curl, and online Google Closure Compiler.

Put this Makefile and js files in the same directory and then type make. After finish, the minified/compressed js file will be named app.min.js in the same directory.

Makefile | repository | view raw

SOURCE_JS_FILES=$(filter-out %.min.js, $(wildcard *.js))
CONCAT_JS=/tmp/tmp.js
MINIFIED_JS=app.min.js

minjs: concat
	curl \
	-d compilation_level=SIMPLE_OPTIMIZATIONS \
	-d language=ECMASCRIPT5 \
	-d output_format=text \
	-d output_info=compiled_code \
	--data-urlencode "js_code@$(CONCAT_JS)" \
	https://closure-compiler.appspot.com/compile \
	> $(MINIFIED_JS)

concat:
	@cat $(SOURCE_JS_FILES) > $(CONCAT_JS)

Tested on: Ubuntu Linux 16.10.

References:

[1]	[Bash] Online Concatenate and Compress JavaScript Files

[2]	[Makefile] Concetenate and Minify CSS via sed and tr Command