Add Makefile

Makefile

@@ -0,0 +1,80 @@
+ROOT_DIR     := $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
+IMAGE_NAME   := mtg
+APP_NAME     := $(IMAGE_NAME)
+GOMETALINTER := gometalinter.v2
+
+VENDOR_FILES := $(shell find "$(ROOT_DIR)/vendor" 2>/dev/null || echo -n "vendor")
+CC_BINARIES  := $(shell bash -c "echo -n $(APP_NAME)-{linux,windows,darwin,freebsd,openbsd}-{386,amd64} $(APP_NAME)-linux-{arm,arm64}")
+APP_DEPS     := version.go $(VENDOR_FILES)
+
+COMMON_BUILD_FLAGS := -ldflags="-s -w"
+
+# -----------------------------------------------------------------------------
+
+$(APP_NAME): $(APP_DEPS)
+	@go build $(COMMON_BUILD_FLAGS) -o "$(APP_NAME)"
+
+static-$(APP_NAME): $(APP_DEPS)
+	@env CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo $(COMMON_BUILD_FLAGS) -o "$(APP_NAME)"
+
+$(APP_NAME)-%: GOOS=$(shell echo -n "$@" | sed 's?$(APP_NAME)-??' | cut -f1 -d-)
+$(APP_NAME)-%: GOARCH=$(shell echo -n "$@" | sed 's?$(APP_NAME)-??' | cut -f2 -d-)
+$(APP_NAME)-%: $(APP_DEPS) ccbuilds
+	@env "GOOS=$(GOOS)" "GOARCH=$(GOARCH)" \
+		go build \
+		$(COMMON_BUILD_FLAGS) \
+		-o "./ccbuilds/$(APP_NAME)-$(GOOS)-$(GOARCH)"
+
+ccbuilds:
+	@rm -rf ./ccbuilds && mkdir -p ./ccbuilds
+
+version.go:
+	@go generate main.go
+
+vendor: Gopkg.lock Gopkg.toml install-cli
+	@dep ensure
+
+# -----------------------------------------------------------------------------
+
+.PHONY: all
+all: $(APP_NAME)
+
+.PHONY: static
+static: static-$(APP_NAME)
+
+.PHONY: crosscompile
+crosscompile: $(CC_BINARIES)
+
+.PHONY: crosscompile-dir
+crosscompile-dir:
+	@rm -rf "$(CC_DIR)" && mkdir -p "$(CC_DIR)"
+
+.PHONY: test
+test: vendor install-cli
+	@go test -v ./...
+
+.PHONY: lint
+lint: vendor install-cli
+	@$(GOMETALINTER) --deadline=2m ./...
+
+.PHONY: clean
+clean:
+	@git clean -xfd && \
+		git reset --hard >/dev/null && \
+		git submodule foreach --recursive sh -c 'git clean -xfd && git reset --hard' >/dev/null
+
+.PHONY: docker
+docker:
+	@docker build --pull -t "$(IMAGE_NAME)" "$(ROOT_DIR)"
+
+.PHONY: install-cli
+install-cli: install-dep install-lint
+
+.PHONY: install-dep
+install-dep:
+	@go get github.com/golang/dep/cmd/dep
+
+.PHONY: install-lint
+install-lint:
+	@go get gopkg.in/alecthomas/gometalinter.v2 && \
+		$(GOMETALINTER) --install >/dev/null

main.go

@@ -1,5 +1,7 @@
 package main
 
+//go:generate scripts/generate_version.sh
+
 import (
 	"encoding/hex"
 	"fmt"
@@ -68,6 +70,7 @@ var (
 )
 
 func main() {
+	app.Version(version)
 	kingpin.MustParse(app.Parse(os.Args[1:]))
 
 	secretBytes, err := hex.DecodeString(*secret)

scripts/generate_version.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+set -eu
+
+PROJECT_DIR="$(git rev-parse --show-toplevel)"
+OUTPUT_FILE="${PROJECT_DIR}/version.go"
+
+cat > "$OUTPUT_FILE" <<EOF
+package main
+// autogenerated by $(basename "$0") on $(date -Ru)
+
+const version = "$(git describe --long --always) ($(go version)) [$(date -Ru)]"
+EOF