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// Copyright 2012 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"
"fmt"
)
/*
* Helpers for building cmd/go and cmd/cgo.
*/
// mkzdefaultcc writes zdefaultcc.go:
//
// package main
// const defaultCC = <defaultcc>
// const defaultCXX = <defaultcxx>
//
// It is invoked to write cmd/go/zdefaultcc.go
// but we also write cmd/cgo/zdefaultcc.go
func mkzdefaultcc(dir, file string) {
var out string
out = fmt.Sprintf(
"// auto generated by go tool dist\n"+
"\n"+
"package main\n"+
"\n"+
"const defaultCC = `%s`\n"+
"const defaultCXX = `%s`\n",
defaultcctarget, defaultcxxtarget)
writefile(out, file, writeSkipSame)
// Convert file name to replace: turn go into cgo.
i := len(file) - len("go/zdefaultcc.go")
file = file[:i] + "c" + file[i:]
writefile(out, file, writeSkipSame)
}
// mkzcgo writes zcgo.go for go/build package:
//
// package build
// var cgoEnabled = map[string]bool{}
//
// It is invoked to write go/build/zcgo.go.
func mkzcgo(dir, file string) {
var buf bytes.Buffer
fmt.Fprintf(&buf,
"// auto generated by go tool dist\n"+
"\n"+
"package build\n"+
"\n"+
"var cgoEnabled = map[string]bool{\n")
for plat, hasCgo := range cgoEnabled {
if hasCgo {
fmt.Fprintf(&buf, "\t%q: true,\n", plat)
}
}
fmt.Fprintf(&buf, "}")
writefile(buf.String(), file, writeSkipSame)
}
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