Makefile

# A Self-Documenting Makefile: http://marmelab.com/blog/2016/02/29/auto-documented-makefile.html

OS = $(shell uname | tr A-Z a-z)
export PATH := $(abspath bin/):${PATH}

# Build variables
BUILD_DIR ?= build
export CGO_ENABLED ?= 0
export GOOS = $(shell go env GOOS)
ifeq (${VERBOSE}, 1)
ifeq ($(filter -v,${GOARGS}),)
	GOARGS += -v
endif
TEST_FORMAT = short-verbose
endif

# Dependency versions
GOTESTSUM_VERSION = 1.6.4
GOLANGCI_VERSION = 1.40.1

# Add the ability to override some variables
# Use with care
-include override.mk

.PHONY: clear
clear: ## Clear the working area and the project
	rm -rf bin/

.PHONY: check
check: test lint ## Run tests and linters

bin/gotestsum: bin/gotestsum-${GOTESTSUM_VERSION}
	@ln -sf gotestsum-${GOTESTSUM_VERSION} bin/gotestsum
bin/gotestsum-${GOTESTSUM_VERSION}:
	@mkdir -p bin
	curl -L https://github.com/gotestyourself/gotestsum/releases/download/v${GOTESTSUM_VERSION}/gotestsum_${GOTESTSUM_VERSION}_${OS}_amd64.tar.gz | tar -zOxf - gotestsum > ./bin/gotestsum-${GOTESTSUM_VERSION} && chmod +x ./bin/gotestsum-${GOTESTSUM_VERSION}

TEST_PKGS ?= ./...
.PHONY: test
test: TEST_FORMAT ?= short
test: SHELL = /bin/bash
test: export CGO_ENABLED=1
test: bin/gotestsum ## Run tests
	@mkdir -p ${BUILD_DIR}
	bin/gotestsum --no-summary=skipped --junitfile ${BUILD_DIR}/coverage.xml --format ${TEST_FORMAT} -- -race -coverprofile=${BUILD_DIR}/coverage.txt -covermode=atomic $(filter-out -v,${GOARGS}) $(if ${TEST_PKGS},${TEST_PKGS},./...)

bin/golangci-lint: bin/golangci-lint-${GOLANGCI_VERSION}
	@ln -sf golangci-lint-${GOLANGCI_VERSION} bin/golangci-lint
bin/golangci-lint-${GOLANGCI_VERSION}:
	@mkdir -p bin
	curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | bash -s -- -b ./bin/ v${GOLANGCI_VERSION}
	@mv bin/golangci-lint "$@"

.PHONY: lint
lint: bin/golangci-lint ## Run linter
	bin/golangci-lint run

.PHONY: fix
fix: bin/golangci-lint ## Fix lint violations
	bin/golangci-lint run --fix

# Add custom targets here
-include custom.mk

.PHONY: list
list: ## List all make targets
	@${MAKE} -pRrn : -f $(MAKEFILE_LIST) 2>/dev/null | awk -v RS= -F: '/^# File/,/^# Finished Make data base/ {if ($$1 !~ "^[#.]") {print $$1}}' | egrep -v -e '^[^[:alnum:]]' -e '^$@$$' | sort

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

# Variable outputting/exporting rules
var-%: ; @echo $($*)
varexport-%: ; @echo $*=$($*)