blob: 06621c8dba2e320ec096cb808de38c7b2c9cef4e [file] [log] [blame]
// Copyright 2014 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
package main
import (
"bytes"
"fmt"
"io/ioutil"
"log"
"strconv"
"strings"
)
var gooses, goarches []string
func main() {
data, err := ioutil.ReadFile("../go/build/syslist.go")
if err != nil {
log.Fatal(err)
}
const (
goosPrefix = `const goosList = `
goarchPrefix = `const goarchList = `
)
for _, line := range strings.Split(string(data), "\n") {
if strings.HasPrefix(line, goosPrefix) {
text, err := strconv.Unquote(strings.TrimPrefix(line, goosPrefix))
if err != nil {
log.Fatalf("parsing goosList %#q: %v", strings.TrimPrefix(line, goosPrefix), err)
}
gooses = strings.Fields(text)
}
if strings.HasPrefix(line, goarchPrefix) {
text, err := strconv.Unquote(strings.TrimPrefix(line, goarchPrefix))
if err != nil {
log.Fatal("parsing goarchList: %v", err)
}
goarches = strings.Fields(text)
}
}
for _, target := range gooses {
var buf bytes.Buffer
fmt.Fprintf(&buf, "// generated by gengoos.go using 'go generate'\n\n")
if target == "linux" {
fmt.Fprintf(&buf, "// +build !android\n\n") // must explicitly exclude android for linux
}
fmt.Fprintf(&buf, "package runtime\n\n")
fmt.Fprintf(&buf, "const theGoos = `%s`\n\n", target)
for _, goos := range gooses {
value := 0
if goos == target {
value = 1
}
fmt.Fprintf(&buf, "const goos_%s = %d\n", goos, value)
}
err := ioutil.WriteFile("zgoos_"+target+".go", buf.Bytes(), 0666)
if err != nil {
log.Fatal(err)
}
}
for _, target := range goarches {
var buf bytes.Buffer
fmt.Fprintf(&buf, "// generated by gengoos.go using 'go generate'\n\n")
fmt.Fprintf(&buf, "package runtime\n\n")
fmt.Fprintf(&buf, "const theGoarch = `%s`\n\n", target)
for _, goarch := range goarches {
value := 0
if goarch == target {
value = 1
}
fmt.Fprintf(&buf, "const goarch_%s = %d\n", goarch, value)
}
err := ioutil.WriteFile("zgoarch_"+target+".go", buf.Bytes(), 0666)
if err != nil {
log.Fatal(err)
}
}
}