Autogenerated help with Makefile
This snippet handles the make help command, and uses the comments from other targets to provide the user with a description of the target. You only need to add a comment (prefixed with ##) for each target, and the snippet will display the comment it nicely.
For example, here is a Makefile:
blah: ## Builds blah from blah.c file
cc blah.c -o blah
help: ## Display this help screen
@grep -h -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
And the output:
$ make help
blah Builds blah from blah.c file
help Display this help screen
Makefile
help: ## Display this help screen
@grep -h -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'