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I prefer a help rule in the Makefile, like so: help: @grep -P &#...

 6 years ago
source link: https://news.ycombinator.com/item?id=11939200
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I prefer a help rule in the Makefile, like so: help: @grep -P '^[a-zA-Z_-]+:.*?#...

I prefer a help rule in the Makefile, like so:
   help:
        @grep -P '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-20s\033[0m %s\n", $$1, $$2}'
Assuming that the trimmed Makefile read:
   build: ## Build the binary

   clean: ## Clean the binary and intermediate files

   distclean: clean ## Clean dependencies, intermediate files and binary

   deps: ## Install dependencies

   all: deps build ## Get dependencies and build binary

   release: distclean all ## distclean + all
Now issuing make help would display:
   all                  Get dependencies and build binary
   build                Build the binary
   clean                Clean the binary and intermediate files
   deps                 Install dependencies
   distclean            Clean dependencies, intermediate files and binary
   release              distclean + all

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