fmt.Fprintf(&buf, "\treturn %s\n", quote(gcc))
	}
	fmt.Fprintf(&buf, "}\n")

	return buf.String()
}

// mkzcgo writes zcgo.go for the go/build package:
//
//	package build
//	const defaultCGO_ENABLED = <CGO_ENABLED>
//
// It is invoked to write go/build/zcgo.go.
func mkzcgo(dir, file string) {
	var buf strings.Builder
	writeHeader(&buf)
	fmt.Fprintf(&buf, "package build\n")
	fmt.Fprintln(&buf)

#!/bin/bash

hdr='
// Copyright 2022 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.

// Code generated by mkcgo.sh. DO NOT EDIT.

//go:build race

'

convert() {
	(echo "$hdr"; go tool cgo -dynpackage race -dynimport $1) | gofmt
}

convert race_darwin_arm64.syso >race_darwin_arm64.go

// Files listed here should also be listed in ../distpack/pack.go's srcArch.Remove list.
var gentab = []struct {
	pkg  string // Relative to $GOROOT/src
	file string
	gen  func(dir, file string)
}{
	{"go/build", "zcgo.go", mkzcgo},
	{"cmd/go/internal/cfg", "zdefaultcc.go", mkzdefaultcc},
	{"runtime/internal/sys", "zversion.go", mkzversion},
	{"time/tzdata", "zzipdata.go", mktzdata},
}

// Package race implements data race detection logic.
// No public interface is provided.
// For details about the race detector see
// https://golang.org/doc/articles/race_detector.html
package race

			}

			if testenv.HasCGO() {
				cgoarchive = filepath.Join(buildDir, "mycgo.a")
				gopath := filepath.Join(buildDir, "gopath")
				err = copyDir(filepath.Join(gopath, "src", "mycgo"), filepath.Join("testdata", "mycgo"))
				if err == nil {
					err = os.WriteFile(filepath.Join(gopath, "src", "mycgo", "go.mod"), []byte("module mycgo\n"), 0666)
				}
				if err != nil {
					return err
				}

// Copyright 2022 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.

// Code generated by mkcgo.sh. DO NOT EDIT.

//go:build race

package race

//go:cgo_import_dynamic _Block_object_assign _Block_object_assign ""
//go:cgo_import_dynamic _Block_object_dispose _Block_object_dispose ""
//go:cgo_import_dynamic _NSConcreteStackBlock _NSConcreteStackBlock ""

// Copyright 2022 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.

// Code generated by mkcgo.sh. DO NOT EDIT.

//go:build race

package race

//go:cgo_import_dynamic _Block_object_assign _Block_object_assign ""
//go:cgo_import_dynamic _Block_object_dispose _Block_object_dispose ""
//go:cgo_import_dynamic _NSConcreteStackBlock _NSConcreteStackBlock ""

package mycgo

// void c1(void);
// void c2(void);

// 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 mycgo

import "fmt"

func go1() {
	fmt.Println("go1")

// 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 mycgo

import "fmt"

func go2() {
	fmt.Println("go2")