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// Copyright 2013 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 ignore
// mksyscall_windows wraps golang.org/x/sys/windows/mkwinsyscall.
package main
import (
"bytes"
"os"
"os/exec"
"path/filepath"
"runtime"
)
func main() {
goTool := filepath.Join(runtime.GOROOT(), "bin", "go")
listCmd := exec.Command(goTool, "list", "-m")
listCmd.Env = append(os.Environ(), "GO111MODULE=on")
var (
cmdEnv []string
modArgs []string
)
if out, err := listCmd.Output(); err == nil && string(bytes.TrimSpace(out)) == "std" {
// Force module mode to use mkwinsyscall at the same version as the x/sys
// module vendored into the standard library.
cmdEnv = append(os.Environ(), "GO111MODULE=on")
// Force -mod=readonly instead of the default -mod=vendor.
//
// mkwinsyscall is not itself vendored into the standard library, and it is
// not feasible to do so at the moment: std-vendored libraries are included
// in the "std" meta-pattern (because in general they *are* linked into
// users binaries separately from the original import paths), and we can't
// allow a binary in the "std" meta-pattern.
modArgs = []string{"-mod=readonly"}
} else {
// Nobody outside the standard library should be using this wrapper: other
// modules can vendor in the mkwinsyscall tool directly (as described in
// https://golang.org/issue/25922), so they don't need this wrapper to
// set module mode and -mod=readonly explicitly.
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")
}
args := append([]string{"run"}, modArgs...)
args = append(args, "golang.org/x/sys/windows/mkwinsyscall")
args = append(args, os.Args[1:]...)
cmd := exec.Command(goTool, args...)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
cmd.Env = cmdEnv
err := cmd.Run()
if err != nil {
os.Exit(1)
}
}
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