golang编译时通过ldflags给包内变量赋值，实现打印版本号及commit

code

package main
import "fmt"
func main() {
    fmt.Printf("   Version: %s\n", Version)
    fmt.Printf("    GitUrl: %s\n", GitURL)
    fmt.Printf("    Branch: %s\n", Branch)
    fmt.Printf("    Commit: %s\n", Commit)
    fmt.Printf(" BuildTime: %s\n", BuildTime)
    fmt.Printf("Go Version: %s\n", runtime.Version())
}

编译参数

go build -ldflags "-extldflags -static \
    -X main.Version=$(VERSION) \
    -X main.GitURL=$(GITURL) \
    -X main.Commit=`git rev-parse HEAD` \
    -X main.Branch=`git rev-parse --abbrev-ref HEAD` \
    -X main.BuildTime=`date -u '+%Y-%m-%d_%H:%M:%S'`"