Makefile

# Basic Go commands
GOCMD=go
GOBUILD=$(GOCMD) build
GOCLEAN=$(GOCMD) clean
GOTEST=$(GOCMD) test
GOGET=$(GOCMD) get
GOPATH=$(shell go env GOPATH)

# Binary name
BINARY_NAME=semver

# linting
define get_latest_lint_release
	curl -s "https://api.github.com/repos/golangci/golangci-lint/releases/latest" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/'
endef
LATEST_LINT_VERSION=$(shell $(call get_latest_lint_release))
INSTALLED_LINT_VERSION=$(shell golangci-lint --version 2>/dev/null | awk '{print "v"$$4}')

# get GOPATH according to OS
ifeq ($(OS),Windows_NT) # is Windows_NT on XP, 2000, 7, Vista, 10...
    GOPATH=$(go env GOPATH)
else
    GOPATH=$(shell go env GOPATH)
endif

build-darwin:
	GOOS=darwin GOARCH=amd64 $(GOBUILD) -o ./build/darwin/amd64/$(BINARY_NAME) -v

build-linux:
	GOOS=linux GOARCH=amd64 $(GOBUILD) -o ./build/linux/amd64/$(BINARY_NAME) -v

build-windows:
	GOOS=windows GOARCH=amd64 $(GOBUILD) -o ./build/windows/amd64/$(BINARY_NAME).exe -v

# install linter
.PHONY: install-linter
install-linter:
ifneq "$(INSTALLED_LINT_VERSION)" "$(LATEST_LINT_VERSION)"
	@echo "new golangci-lint version found:" $(LATEST_LINT_VERSION)
	curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(GOPATH)/bin latest
endif

# Run static analysis tools, configuration in ./.golangci.yml file
.PHONY: lint
lint: install-linter
	golangci-lint run ./...

.PHONY: test
test:
	go test -cover -race ./...