go gccgo 源码
golang gccgo 代码
文件路径：/src/internal/goroot/gccgo.go
// Copyright 2018 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.
//go:build gccgo
package goroot
import (
"os"
"path/filepath"
)
// IsStandardPackage reports whether path is a standard package,
// given goroot and compiler.
func IsStandardPackage(goroot, compiler, path string) bool {
switch compiler {
case "gc":
dir := filepath.Join(goroot, "src", path)
_, err := os.Stat(dir)
return err == nil
case "gccgo":
return stdpkg[path]
default:
panic("unknown compiler " + compiler)
}
}
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