| // 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. |
| |
| package main |
| |
| import ( |
| "bytes" |
| "os/exec" |
| "runtime" |
| ) |
| |
| // 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" |
| }() |
