Merge pull request #32 from seatgeek/fix-version-from-tag

Use version from git tag

Makefile

@@ -3,6 +3,9 @@ BUILD_DIR 	?= $(abspath build)
 GET_GOARCH 	= $(word 2,$(subst -, ,$1))
 GET_GOOS 	= $(word 1,$(subst -, ,$1))
 GOBUILD 	?= $(shell go env GOOS)-$(shell go env GOARCH)
+GIT_COMMIT 	:= $(shell git describe --tags)
+GIT_DIRTY 	:= $(if $(shell git status --porcelain),+CHANGES)
+GO_LDFLAGS 	:= "-X main.Version=$(GIT_COMMIT)$(GIT_DIRTY)"
 
 $(BUILD_DIR):
 	mkdir -p $@
@@ -28,7 +31,7 @@ ci: install
 BINARIES = $(addprefix $(BUILD_DIR)/hashi-helper-, $(GOBUILD))
 $(BINARIES): $(BUILD_DIR)/hashi-helper-%: $(BUILD_DIR)
 	@echo "=> building $@ ..."
-	GOOS=$(call GET_GOOS,$*) GOARCH=$(call GET_GOARCH,$*) CGO_ENABLED=0 go build -o $@
+	GOOS=$(call GET_GOOS,$*) GOARCH=$(call GET_GOARCH,$*) CGO_ENABLED=0 go build -o $@ -ldflags $(GO_LDFLAGS)
 
 .PHONY: dist
 dist: install

main.go

@@ -12,11 +12,16 @@ import (
 	cli "gopkg.in/urfave/cli.v1"
 )
 
+var (
+	// Version is filled in by the compiler (git tag + changes)
+	Version = "local-dev"
+)
+
 func main() {
 	app := cli.NewApp()
 	app.Name = "vault-manager"
 	app.Usage = "easily restore / snapshot your secrets"
-	app.Version = "0.1"
+	app.Version = Version
 
 	app.Flags = []cli.Flag{
 		cli.IntFlag{