Removes cruft and simplifies Makefile

Author: Camilo Aguilar

.gitignore

@@ -1,4 +1,6 @@
 .build
+build
+dist
 postgres_exporter
 postgres_exporter_integration_test
 *.tar.gz

Makefile

@@ -1,79 +1,45 @@
-
-COVERDIR = .coverage
-TOOLDIR = tools
-
-GO_SRC := $(shell find . -name '*.go' ! -path '*/vendor/*' ! -path 'tools/*' )
-GO_DIRS := $(shell find . -type d -name '*.go' ! -path '*/vendor/*' ! -path 'tools/*' )
-GO_PKGS := $(shell go list ./... | grep -v '/vendor/')
-
-CONTAINER_NAME ?= wrouesnel/postgres_exporter:latest
-VERSION ?= $(shell git describe --dirty)
-
-CONCURRENT_LINTERS ?= $(shell cat /proc/cpuinfo | grep processor | wc -l)
-LINTER_DEADLINE ?= 30s
-
-export PATH := $(TOOLDIR)/bin:$(PATH)
-SHELL := env PATH=$(PATH) /bin/bash
-
-all: style lint test postgres_exporter
-
-# Cross compilation (e.g. if you are on a Mac)
-cross: docker-build docker
-
-# Simple go build
-postgres_exporter: $(GO_SRC)
-	CGO_ENABLED=0 go build -a -ldflags "-extldflags '-static' -X main.Version=$(VERSION)" -o postgres_exporter .
-
-postgres_exporter_integration_test: $(GO_SRC)
-	CGO_ENABLED=0 go test -c -tags integration \
-	    -a -ldflags "-extldflags '-static' -X main.Version=$(VERSION)" -o postgres_exporter_integration_test -cover -covermode count .
-
-# Take a go build and turn it into a minimal container
-docker: postgres_exporter
-	docker build -t $(CONTAINER_NAME) .
-
-style: tools
-	gometalinter --disable-all --enable=gofmt --vendor
-
-lint: tools
-	@echo Using $(CONCURRENT_LINTERS) processes
-	gometalinter -j $(CONCURRENT_LINTERS) --deadline=$(LINTER_DEADLINE) --disable=gotype --disable=gocyclo $(GO_DIRS)
-
-fmt: tools
-	gofmt -s -w $(GO_SRC)
-
-test: tools
-	@mkdir -p $(COVERDIR)
-	@rm -f $(COVERDIR)/*
-	for pkg in $(GO_PKGS) ; do \
-		go test -v -covermode count -coverprofile=$(COVERDIR)/$$(echo $$pkg | tr '/' '-').out $$pkg ; \
+NAME := postgres-exporter
+VERSION := v0.2.2
+
+help: ## Shows this help text
+	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
+
+dev: ## Builds dev binary
+	go build -ldflags "-X main.Version=$(VERSION)"
+
+build: ## Builds binary for all supported platforms
+	@rm -rf build/
+	@gox -ldflags "-X main.Version=$(VERSION)" \
+	-osarch="darwin/amd64" \
+	-os="linux" \
+	-os="windows" \
+	-os="solaris" \
+	-output "build/{{.Dir}}_$(VERSION)_{{.OS}}_{{.Arch}}/$(NAME)" \
+	./...
+
+install: ## Locally installs dev binary
+	go install -ldflags "-X main.Version=$(VERSION)"
+
+deps: ## Installs dev dependencies
+	go get github.com/c4milo/github-release
+	go get github.com/mitchellh/gox
+	go get github.com/kardianos/govendor
+
+dist: build ## Generates distributable artifacts
+	$(eval FILES := $(shell ls build))
+	@rm -rf dist && mkdir dist
+	@for f in $(FILES); do \
+		(cd $(shell pwd)/build/$$f && tar -cvzf ../../dist/$$f.tar.gz *); \
+		(cd $(shell pwd)/dist && shasum -a 512 $$f.tar.gz > $$f.sha512); \
+		echo $$f; \
 	done
-	gocovmerge $(shell find $(COVERDIR) -name '*.out') > cover.test.out
-
-test-integration: postgres_exporter postgres_exporter_integration_test
-	tests/test-smoke "$(shell pwd)/postgres_exporter" "$(shell pwd)/postgres_exporter_integration_test_script $(shell pwd)/postgres_exporter_integration_test $(shell pwd)/cover.integration.out"
-
-cover.out: tools
-	gocovmerge cover.*.out > cover.out
-
-# Do a self-contained docker build - we pull the official upstream container
-# and do a self-contained build.
-docker-build:
-	docker run -v $(shell pwd):/go/src/github.com/wrouesnel/postgres_exporter \
-	    -v $(shell pwd):/real_src \
-	    -e SHELL_UID=$(shell id -u) -e SHELL_GID=$(shell id -g) \
-	    -w /go/src/github.com/wrouesnel/postgres_exporter \
-		golang:1.8-wheezy \
-		/bin/bash -c "make >&2 && chown $$SHELL_UID:$$SHELL_GID ./postgres_exporter"
-	docker build -t $(CONTAINER_NAME) .
-
-push:
-	docker push $(CONTAINER_NAME)
-
-tools:
-	$(MAKE) -C $(TOOLDIR)
 
-clean:
-	rm -f postgres_exporter postgres_exporter_integration_test
+release: dist ## Pushes up distributable artifacts to Github Releases
+	@latest_tag=$$(git describe --tags `git rev-list --tags --max-count=1`); \
+	comparison="$$latest_tag..HEAD"; \
+	if [ -z "$$latest_tag" ]; then comparison=""; fi; \
+	changelog=$$(git log $$comparison --oneline --no-merges); \
+	github-release c4milo/$(NAME) $(VERSION) "$$(git rev-parse --abbrev-ref HEAD)" "**Changelog**<br/>$$changelog" 'dist/*'; \
+	git pull
 
-.PHONY: tools docker-build docker lint fmt test vet push cross clean
+.PHONY: build dev dist install deps release