Makefile

GO_BINARY ?= $(shell which go)
BINARY_NAME ?= $(shell basename $(CURDIR))

TAG_COMMIT := $(shell git rev-list --abbrev-commit --all --max-count=1)
VERSION := $(shell git describe --abbrev=0 --tags --exact-match $(TAG_COMMIT) 2>/dev/null || true)
DATE := $(shell git log -1 --format=%cd --date=format:"%Y%m%d%H%M")
ifeq ($(VERSION),)
    VERSION := nightly-$(DATE)
endif

LDFLAGS := "-s -w -X github.com/mdeous/plasmid/cmd.version=$(VERSION)"
GO_FLAGS := -v -ldflags $(LDFLAGS)

IMAGE_VERSION ?= dev
IMAGE_TAG := mdeous/plasmid:$(IMAGE_VERSION)
IMAGE_CACHE := --pull --cache-from=mdeous/plasmid:latest
IMAGE_ARGS := --build-arg=VERSION=$(VERSION) --load

.PHONY: all clean rebuild deps update-deps cross-compile docker-image version help

all: $(BINARY_NAME) ## Default build action

$(BINARY_NAME):
	@$(GO_BINARY) build $(GO_FLAGS) -o $(BINARY_NAME) .

clean: ## Clean artifacts from previous build
	@rm -vf $(BINARY_NAME)
	@rm -vrf ./build

rebuild: clean all ## Delete existing artifacts and rebuild

deps: ## Fetch project dependencies
	@$(GO_BINARY) get -v .

update-deps: ## Update project dependencies
	@$(GO_BINARY) get -v -u .
	@$(GO_BINARY) mod tidy -v

cross-compile: ## Build for all supported platforms
	@goreleaser build --snapshot --clean

docker-image: ## Build the docker image
	@docker build $(IMAGE_ARGS) $(IMAGE_CACHE) -t $(IMAGE_TAG) .

version: ## Display current program version
	@echo $(VERSION)

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