Makefile

# Set the shell
SHELL := /bin/bash

# Set an output prefix, which is the local directory if not specified
PREFIX?=$(shell pwd)

# For this to work, you need to install toml-cli: https://github.com/gnprice/toml-cli
# `cargo install toml-cli`
VERSION := $(shell toml get $(CURDIR)/Cargo.toml package.version | jq -r .)

GITCOMMIT := $(shell git rev-parse --short HEAD)
GITUNTRACKEDCHANGES := $(shell git status --porcelain --untracked-files=no)
ifneq ($(GITUNTRACKEDCHANGES),)
	GITCOMMIT := $(GITCOMMIT)-dirty
endif
ifeq ($(GITCOMMIT),)
    GITCOMMIT := ${GITHUB_SHA}
endif

.PHONY: tag
tag: ## Create a new git tag to prepare to build a release.
	git tag -sa v$(VERSION) -m "v$(VERSION)"
	@echo "Run git push origin v$(VERSION) to push your new tag to GitHub and trigger a release."

.PHONY: AUTHORS
AUTHORS:
	@$(file >$@,# This file lists all individuals having contributed content to the repository.)
	@$(file >>$@,# For how it is generated, see `make AUTHORS`.)
	@echo "$(shell git log --format='\n%aN <%aE>' | LC_ALL=C.UTF-8 sort -uf)" >> $@

.PHONY: help
help:
	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | sed 's/^[^:]*://g' | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'

check_defined = \
    $(strip $(foreach 1,$1, \
	$(call __check_defined,$1,$(strip $(value 2)))))

__check_defined = \
    $(if $(value $1),, \
    $(error Undefined $1$(if $2, ($2))$(if $(value @), \
    required by target `$@')))