Makefile

OSFLAG:=$(shell go env GOHOSTOS)
BINARY:=dhcp

help: ## show this help message
	@grep -E '^[a-zA-Z_-]+.*:.*?## .*$$' Makefile | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[32m%-30s\033[0m %s\n", $$1, $$2}'

.PHONY: test
test: ## run unit tests
	go test -v -covermode=atomic -race ./...

.PHONY: cover
cover: ## Run unit tests with coverage report
	go test -race -coverprofile=coverage.out -covermode=atomic ./... || true
	go tool cover -func=coverage.out

.PHONY: build-linux
build-linux: ## Compile for linux
	GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build -trimpath -ldflags '-s -w -extldflags "-static"' -o bin/${BINARY}-linux cmd/main.go

.PHONY: build-darwin
build-darwin: ## Compile for darwin
	GOOS=darwin GOARCH=amd64 CGO_ENABLED=0 go build -trimpath -ldflags "-s -w -extldflags '-static'" -o bin/${BINARY}-darwin cmd/main.go

.PHONY: build
build: ## Compile the binary for the native OS
ifeq (${OSFLAG},linux)
	@$(MAKE) build-linux
else
	@$(MAKE) build-darwin
endif

# BEGIN: lint-install github.com/tinkerbell/dhcp
# http://github.com/tinkerbell/lint-install

.PHONY: lint
lint: _lint ## run all linters

LINT_ARCH := $(shell uname -m)
LINT_OS := $(shell uname)
LINT_OS_LOWER := $(shell echo $(LINT_OS) | tr '[:upper:]' '[:lower:]')
LINT_ROOT := $(shell dirname $(realpath $(firstword $(MAKEFILE_LIST))))

# shellcheck and hadolint lack arm64 native binaries: rely on x86-64 emulation
ifeq ($(LINT_OS),Darwin)
	ifeq ($(LINT_ARCH),arm64)
		LINT_ARCH=x86_64
	endif
endif

LINTERS :=
FIXERS :=

GOLANGCI_LINT_CONFIG := $(LINT_ROOT)/.golangci.yml
GOLANGCI_LINT_VERSION ?= v1.54.2
GOLANGCI_LINT_BIN := out/linters/golangci-lint-$(GOLANGCI_LINT_VERSION)-$(LINT_ARCH)
$(GOLANGCI_LINT_BIN):
	mkdir -p out/linters
	rm -rf out/linters/golangci-lint-*
	curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b out/linters $(GOLANGCI_LINT_VERSION)
	mv out/linters/golangci-lint $@

LINTERS += golangci-lint-lint
golangci-lint-lint: $(GOLANGCI_LINT_BIN)
	find . -name go.mod -execdir sh -c '"$(GOLANGCI_LINT_BIN)" run -c "$(GOLANGCI_LINT_CONFIG)"' '{}' '+'

FIXERS += golangci-lint-fix
golangci-lint-fix: $(GOLANGCI_LINT_BIN)
	find . -name go.mod -execdir "$(GOLANGCI_LINT_BIN)" run -c "$(GOLANGCI_LINT_CONFIG)" --fix \;

.PHONY: _lint $(LINTERS)
_lint: $(LINTERS)

.PHONY: fix $(FIXERS)
fix: $(FIXERS)

# END: lint-install github.com/tinkerbell/dhcp