Makefiles are awesome. My only gripe is that build targets are not discoverable out of the box. That is where self documenting Makefiles shines. Simply append a description to each make target and the following help target.

First add the following to the end of your Makefile

help:
	@awk -F ':|##' '/^[^\t].+?:.*?##/ {\
		printf "\033[36m%-30s\033[0m %s\n", $$1, $$NF \
	}' $(MAKEFILE_LIST)
.DEFAULT_GOAL=help
.PHONY=help

Then add comments to targets by appending ## some description

build: ## compile project
	commands here

clean: ## remove build artefacts
	rm ...

Result is that make or make help will output

$ make
build                           compile
clean                           remove build artefacts