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