Add Makefile with install and release targets

.gitignore

@@ -21,3 +21,5 @@ _testmain.go
 
 *.exe
 node_exporter
+.deps
+*.tar.gz

Makefile

@@ -0,0 +1,50 @@
+VERSION  := 0.3.0
+
+SRC      := $(wildcard *.go)
+TARGET   := node_exporter
+
+OS   := $(subst Darwin,darwin,$(subst Linux,linux,$(shell uname)))
+ARCH := $(subst x86_64,amd64,$(shell uname -m))
+
+GOOS   ?= $(OS)
+GOARCH ?= $(ARCH)
+GOPKG  := go1.2.1.$(OS)-$(ARCH).tar.gz
+GOROOT ?= $(CURDIR)/.deps/go
+GOPATH ?= $(CURDIR)/.deps/gopath
+GOCC   := $(GOROOT)/bin/go
+GOLIB  := $(GOROOT)/pkg/$(GOOS)_$(GOARCH)
+GO     := GOROOT=$(GOROOT) GOPATH=$(GOPATH) $(GOCC)
+
+SUFFIX  := $(GOOS)-$(GOARCH)
+BINARY  := $(TARGET)
+ARCHIVE := $(TARGET)-$(VERSION).$(SUFFIX).tar.gz
+
+default:
+	go build $(GOFLAGS)
+
+.deps/$(GOPKG):
+	mkdir -p .deps
+	curl -o .deps/$(GOPKG) http://go.googlecode.com/files/$(GOPKG)
+
+$(GOCC): .deps/$(GOPKG)
+	tar -C .deps -xzf .deps/$(GOPKG)
+	touch $@
+
+dependencies: $(SRC)
+	$(GO) get -d
+
+$(BINARY): $(GOCC) $(SRC) dependencies
+	$(GO) build $(GOFLAGS) -o $@
+
+$(ARCHIVE): $(BINARY)
+	tar -czf $@ $<
+
+release: REMOTE     ?= $(error "can't release, REMOTE not set")
+release: REMOTE_DIR ?= $(error "can't release, REMOTE_DIR not set")
+release: $(ARCHIVE)
+	scp $< $(REMOTE):$(REMOTE_DIR)/$(ARCHIVE)
+
+clean:
+	rm -rf bin
+
+.PHONY: dependencies clean release