7a9389330e
gcc/: * gcc.c (default_compilers): Add entry for ".go". * common.opt: Add -static-libgo as a driver option. * doc/install.texi (Configuration): Mention libgo as an option for --enable-shared. Mention go as an option for --enable-languages. * doc/invoke.texi (Overall Options): Mention .go as a file name suffix. Mention go as a -x option. * doc/frontends.texi (G++ and GCC): Mention Go as a supported language. * doc/sourcebuild.texi (Top Level): Mention libgo. * doc/standards.texi (Standards): Add section on Go language. Move references for other languages into their own section. * doc/contrib.texi (Contributors): Mention that I contributed the Go frontend. gcc/testsuite/: * lib/go.exp: New file. * lib/go-dg.exp: New file. * lib/go-torture.exp: New file. * lib/target-supports.exp (check_compile): Match // Go. From-SVN: r167407
67 lines
1.3 KiB
Go
67 lines
1.3 KiB
Go
// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package exec
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import (
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"os"
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"strings"
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)
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func chkStat(file string) bool {
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d, err := os.Stat(file)
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if err != nil {
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return false
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}
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return d.IsRegular()
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}
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func canExec(file string, exts []string) (string, bool) {
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if len(exts) == 0 {
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return file, chkStat(file)
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}
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f := strings.ToLower(file)
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for _, e := range exts {
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if strings.HasSuffix(f, e) {
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return file, chkStat(file)
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}
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}
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for _, e := range exts {
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if f := file + e; chkStat(f) {
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return f, true
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}
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}
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return ``, false
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}
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func LookPath(file string) (string, os.Error) {
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exts := []string{}
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if x := os.Getenv(`PATHEXT`); x != `` {
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exts = strings.Split(strings.ToLower(x), `;`, -1)
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for i, e := range exts {
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if e == `` || e[0] != '.' {
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exts[i] = `.` + e
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}
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}
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}
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if strings.Contains(file, `\`) || strings.Contains(file, `/`) {
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if f, ok := canExec(file, exts); ok {
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return f, nil
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}
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return ``, os.ENOENT
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}
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if pathenv := os.Getenv(`PATH`); pathenv == `` {
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if f, ok := canExec(`.\`+file, exts); ok {
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return f, nil
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}
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} else {
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for _, dir := range strings.Split(pathenv, `;`, -1) {
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if f, ok := canExec(dir+`\`+file, exts); ok {
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return f, nil
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}
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}
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}
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return ``, os.ENOENT
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}
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