Add make release.

.gitignore

@@ -1,22 +1 @@
-# Compiled Object files, Static and Dynamic libs (Shared Objects)
-*.o
-*.a
-*.so
-
-# Folders
-_obj
-_test
-
-# Architecture specific extensions/prefixes
-*.[568vq]
-[568vq].out
-
-*.cgo1.go
-*.cgo2.c
-_cgo_defun.c
-_cgo_gotypes.go
-_cgo_export.*
-
-_testmain.go
-
-*.exe
+bin

Makefile

@@ -1,20 +1,20 @@
-TEST=.
-BENCH=.
-COVERPROFILE=/tmp/c.out
+VERSION=0.1.0
+GOLDFLAGS="-X main.version $(VERSION)"
 
-# http://cloc.sourceforge.net/
-cloc:
-	@cloc --not-match-f='Makefile|_test.go' .
+default:
 
-cover: fmt
-	go test -coverprofile=$(COVERPROFILE) -test.run=$(TEST) .
-	go tool cover -html=$(COVERPROFILE)
-	rm $(COVERPROFILE)
+release: release-windows release-darwin release-linux
 
-fmt:
-	@go fmt ./...
+release-windows:
+	mkdir -p bin/windows/amd64
+	GOOS=windows GOARCH=amd64 go build -ldflags=$(GOLDFLAGS) -o bin/windows/amd64/ego ./cmd/ego
 
-test: fmt
-	@go test -v -cover -test.run=$(TEST)
+release-darwin:
+	mkdir -p bin/darwin/amd64
+	GOOS=darwin GOARCH=amd64 go build -ldflags=$(GOLDFLAGS) -o bin/darwin/amd64/ego ./cmd/ego
 
-.PHONY: cloc cover fmt test
+release-linux:
+	mkdir -p bin/linux/amd64
+	GOOS=linux GOARCH=amd64 go build -ldflags=$(GOLDFLAGS) -o bin/linux/amd64/ego ./cmd/ego
+
+.PHONY: default release

cmd/ego/main.go

@@ -12,12 +12,22 @@ import (
 	"github.com/benbjohnson/ego"
 )
 
+// version is set by the makefile during build.
+var version string
+
 func main() {
 	outfile := flag.String("o", "ego.go", "output file")
 	pkgname := flag.String("package", "", "package name")
+	versionFlag := flag.Bool("version", false, "print version")
 	flag.Parse()
 	log.SetFlags(0)
 
+	// If the version flag is set then print the version.
+	if *versionFlag {
+		fmt.Printf("ego v%s\n", version)
+		return
+	}
+
 	// If no paths are provided then use the present working directory.
 	roots := flag.Args()
 	if len(roots) == 0 {