dongliao3450 2015-02-11 16:15
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Golang将环境​​变量编译为二进制

If I compile this program

package main

import (
    "fmt"
    "os"
)

var version = os.Getenv("VERSION")

func main() {
    fmt.Println(version)
}

It prints the env var when I run it

VERSION="0.123" ./example
> 0.123

Is there a way to compile the env var into the binary, for example:

VERSION="0.123" go build example.go

Then get the same output when I run

./example
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4条回答 默认 最新

  • doulin2555 2015-02-11 17:06
    关注

    Go 1.5 and above edit:

    As of now, the syntax has changed. Use

    go build -ldflags "-X main.Version=$VERSION"
    

    on Linux, and on Windows use

    go build -ldflags "-X main.Version=%VERSION%"
    

    This is what -X linker flag is for. In your case, you would do

    go build -ldflags "-X main.Version $VERSION"
    

    Edit: on Windows this would be

    go build -ldflags "-X main.Version %VERSION%"
    

    More info in the linker docs.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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