mirror of https://github.com/status-im/xgo.git
56 lines
1.4 KiB
Go
56 lines
1.4 KiB
Go
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// Go CGO cross compiler
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// Copyright (c) 2014 Péter Szilágyi. All rights reserved.
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//
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// Released under the MIT license.
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// Wrapper around the GCO cross compiler docker container.
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package main
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import (
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"fmt"
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"io"
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"log"
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"os"
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"os/exec"
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)
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// Docker container configured for cross compilation.
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var container = "karalabe/xgo"
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func main() {
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// Make sure docker is actually available on the system
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fmt.Println("Checking docker installation...")
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if err := run(exec.Command("docker", "version")); err != nil {
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log.Fatalf("Failed to check docker installation: %v.", err)
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}
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// Fetch and configure the compilation settings
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if len(os.Args) != 2 {
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log.Fatalf("Usage: %s <go import path>", os.Args[0])
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}
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path := os.Args[1]
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pwd, err := os.Getwd()
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if err != nil {
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log.Fatalf("Failed to retrieve the working directory: %v.", err)
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}
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// Cross compile the requested package into the local folder
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fmt.Println("Cross compiling", path)
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if err := run(exec.Command("docker", "run", "-v", pwd+":/build", container, path)); err != nil {
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log.Fatalf("Failed to cross compile package: %v.", err)
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}
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}
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// Executes a command synchronously, redirecting its output to stdout.
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func run(cmd *exec.Cmd) error {
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if out, err := cmd.StdoutPipe(); err != nil {
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return err
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} else {
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go io.Copy(os.Stdout, out)
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}
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if out, err := cmd.StderrPipe(); err != nil {
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return err
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} else {
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go io.Copy(os.Stderr, out)
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}
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return cmd.Run()
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}
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