Go 编译时加入版本信息 

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package main

import (
    "fmt"
    "os"
)
var (
    gitHash   string
    buildTime string
    goVersion string
)
func main() {
    args := os.Args
    if len(args) == 2 && (args[1] == "--version" || args[1] == "-v") {
        fmt.Printf("Git Commit Hash: %s \n", gitHash)
        fmt.Printf("Build TimeStamp: %s \n", buildTime)
        fmt.Printf("GoLang Version: %s \n", goVersion)
        return
    }
}
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go build -ldflags "-X 'main.goVersion=$(go version)' -X 'main.gitHash=$(git show -s --format=%H)' -X 'main.buildTime=$(git show -s --format=%cd)'"