go main 源码
golang main 代码
文件路径：/src/cmd/internal/metadata/main.go
// 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.
// Metadata prints basic system metadata to include in test logs. This is
// separate from cmd/dist so it does not need to build with the bootstrap
// toolchain.
// This program is only used by cmd/dist. Add an "ignore" build tag so it
// is not installed. cmd/dist does "go run main.go" directly.
//go:build ignore
package main
import (
"cmd/internal/osinfo"
"fmt"
"internal/sysinfo"
"runtime"
)
func main() {
fmt.Printf("# GOARCH: %s\n", runtime.GOARCH)
fmt.Printf("# CPU: %s\n", sysinfo.CPU.Name())
fmt.Printf("# GOOS: %s\n", runtime.GOOS)
ver, err := osinfo.Version()
if err != nil {
ver = fmt.Sprintf("UNKNOWN: error determining OS version: %v", err)
}
fmt.Printf("# OS Version: %s\n", ver)
}
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