add version print

Makefile

@@ -1,22 +1,27 @@
 NAME := stc
+GIT_TAG=$(shell git describe --tags --always --dirty)
+LDFLAGS=-ldflags "-X main.GitTag=$(GIT_TAG)"
 
 all: $(NAME)
 $(NAME): *.go
-	go build -o $(NAME) .
+	go build $(LDFLAGS) -o $(NAME) .
 
 cross:
-	GOOS=linux GOARCH=amd64 go build -a -o $(NAME)-amd64-linux .
-	GOOS=linux GOARCH=arm go build -a -o $(NAME)-arm-linux .
-	GOOS=linux GOARCH=arm64 go build -a -o $(NAME)-arm64-linux .
-	GOOS=darwin GOARCH=amd64 go build -a -o $(NAME)-amd64-macos .
-	GOOS=darwin GOARCH=arm64 go build -a -o $(NAME)-arm64-macos .
-	GOOS=freebsd GOARCH=amd64 go build -a -o $(NAME)-amd64-freebsd .
-	GOOS=openbsd GOARCH=amd64 go build -a -o $(NAME)-amd64-openbsd .
-	GOOS=netbsd GOARCH=amd64 go build -a -o $(NAME)-amd64-netbsd .
-	GOOS=solaris GOARCH=amd64 go build -a -o $(NAME)-adm64-solaris .
-	GOOS=aix GOARCH=ppc64 go build -a -o $(NAME)-ppc64-aix .
-	GOOS=plan9 GOARCH=amd64 go build -a -o $(NAME)-amd64-plan9 .
-	GOOS=plan9 GOARCH=arm go build -a -o $(NAME)-arm-plan9 .
-	GOOS=windows GOARCH=amd64 go build -a -o $(NAME)-amd64-win64.exe
-	GOOS=windows GOARCH=arm64 go build -a -o $(NAME)-arm64-win64.exe
-	GOOS=windows GOARCH=386 go build -a -o $(NAME)-arm64-win32.exe
+	GOOS=linux GOARCH=amd64 go build $(LDFLAGS) -a -o $(NAME)-amd64-linux .
+	GOOS=linux GOARCH=arm go build $(LDFLAGS) -a -o $(NAME)-arm-linux .
+	GOOS=linux GOARCH=arm64 go build $(LDFLAGS) -a -o $(NAME)-arm64-linux .
+	GOOS=darwin GOARCH=amd64 go build $(LDFLAGS) -a -o $(NAME)-amd64-macos .
+	GOOS=darwin GOARCH=arm64 go build $(LDFLAGS) -a -o $(NAME)-arm64-macos .
+	GOOS=freebsd GOARCH=amd64 go build $(LDFLAGS) -a -o $(NAME)-amd64-freebsd .
+	GOOS=openbsd GOARCH=amd64 go build $(LDFLAGS) -a -o $(NAME)-amd64-openbsd .
+	GOOS=netbsd GOARCH=amd64 go build $(LDFLAGS) -a -o $(NAME)-amd64-netbsd .
+	GOOS=solaris GOARCH=amd64 go build $(LDFLAGS) -a -o $(NAME)-adm64-solaris .
+	GOOS=aix GOARCH=ppc64 go build $(LDFLAGS) -a -o $(NAME)-ppc64-aix .
+	GOOS=plan9 GOARCH=amd64 go build $(LDFLAGS) -a -o $(NAME)-amd64-plan9 .
+	GOOS=plan9 GOARCH=arm go build $(LDFLAGS) -a -o $(NAME)-arm-plan9 .
+	GOOS=windows GOARCH=amd64 go build $(LDFLAGS) -a -o $(NAME)-amd64-win64.exe
+	GOOS=windows GOARCH=arm64 go build $(LDFLAGS) -a -o $(NAME)-arm64-win64.exe
+	GOOS=windows GOARCH=386 go build $(LDFLAGS) -a -o $(NAME)-arm64-win32.exe
+
+clean:
+	rm -f stc stc-*

hlp.go

@@ -33,6 +33,10 @@ func usage() {
 	)
 }
 
+func printVer() {
+	fmt.Printf("stc version %v\n", GitTag)
+}
+
 func findCfgFile(homeDir string) (string, error) {
 	getCfgFile := func(dir string) (string, error) {
 		_, err := os.Stat(dir)

stc.go

@@ -21,6 +21,8 @@ var (
 	target  = flag.String("target", "", "Syncthing Target URL")
 	homeDir = flag.String("homedir", "", "Syncthing Home Directory, used to get API Key and Target")
 	igCert  = flag.Bool("ignore_cert_errors", false, "ignore https/ssl/tls cert errors")
+	verFlag = flag.Bool("version", false, "print version")
+	GitTag  string
 )
 
 type SyncFolder struct {
@@ -351,6 +353,10 @@ func main() {
 	log.SetFlags(log.LstdFlags | log.Lshortfile)
 	flag.Usage = usage
 	flag.Parse()
+	if *verFlag {
+		printVer()
+		os.Exit(0)
+	}
 
 	a, t, err := cfg(*apiKey, *target, *homeDir)
 	if err != nil {