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38 lines
871 B
38 lines
871 B
// Copyright 2017 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build !plan9
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package main
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import (
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"bytes"
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"context"
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"os/exec"
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"runtime"
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"strings"
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)
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// arch contains either amd64 or 386.
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var arch = func() string {
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cmd := exec.Command("uname", "-m") // "x86_64"
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if runtime.GOOS == "windows" {
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cmd = exec.Command("powershell", "-command", "(Get-WmiObject -Class Win32_ComputerSystem).SystemType") // "x64-based PC"
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}
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out, err := cmd.Output()
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if err != nil {
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// a sensible default?
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return "amd64"
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}
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if bytes.Contains(out, []byte("64")) {
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return "amd64"
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}
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return "386"
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}()
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func findGo(ctx context.Context, cmd string) (string, error) {
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out, err := exec.CommandContext(ctx, cmd, "go").CombinedOutput()
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return strings.TrimSpace(string(out)), err
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}
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