1 // Copyright 2013 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
4 5 //go:build ignore
6 7 // mksyscall_windows wraps golang.org/x/sys/windows/mkwinsyscall.
8 package main
9 10 import (
11 "bytes"
12 "os"
13 "os/exec"
14 "path/filepath"
15 "runtime"
16 )
17 18 func main() {
19 goTool := filepath.Join(runtime.GOROOT(), "bin", "go")
20 21 listCmd := exec.Command(goTool, "list", "-m")
22 listCmd.Env = append(os.Environ(), "GO111MODULE=on")
23 24 var (
25 cmdEnv []string
26 modArgs []string
27 )
28 if out, err := listCmd.Output(); err == nil && string(bytes.TrimSpace(out)) == "std" {
29 // Force module mode to use mkwinsyscall at the same version as the x/sys
30 // module vendored into the standard library.
31 cmdEnv = append(os.Environ(), "GO111MODULE=on")
32 33 // Force -mod=readonly instead of the default -mod=vendor.
34 //
35 // mkwinsyscall is not itself vendored into the standard library, and it is
36 // not feasible to do so at the moment: std-vendored libraries are included
37 // in the "std" meta-pattern (because in general they *are* linked into
38 // users binaries separately from the original import paths), and we can't
39 // allow a binary in the "std" meta-pattern.
40 modArgs = []string{"-mod=readonly"}
41 } else {
42 // Nobody outside the standard library should be using this wrapper: other
43 // modules can vendor in the mkwinsyscall tool directly (as described in
44 // https://golang.org/issue/25922), so they don't need this wrapper to
45 // set module mode and -mod=readonly explicitly.
46 os.Stderr.WriteString("WARNING: Please switch from using:\n go run $GOROOT/src/syscall/mksyscall_windows.go\nto using:\n go run golang.org/x/sys/windows/mkwinsyscall\n")
47 }
48 49 args := append([]string{"run"}, modArgs...)
50 args = append(args, "golang.org/x/sys/windows/mkwinsyscall")
51 args = append(args, os.Args[1:]...)
52 cmd := exec.Command(goTool, args...)
53 cmd.Stdout = os.Stdout
54 cmd.Stderr = os.Stderr
55 cmd.Env = cmdEnv
56 err := cmd.Run()
57 if err != nil {
58 os.Exit(1)
59 }
60 }
61