8b61831b0d
- Remove /llgo from .gitignore (unnecessary) - Move cgoSupported linkname to top with other linknames - Fix goVersion initialization timing by making it local variable 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
141 lines
3.3 KiB
Go
141 lines
3.3 KiB
Go
// Copyright 2024 The GoPlus Authors (goplus.org). 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 build provides alternative implementations for go/build.
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// Only functions that need modification are patched here.
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package build
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import (
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"go/build"
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"os"
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"path/filepath"
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"runtime"
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"strconv"
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"strings"
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_ "unsafe"
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)
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// Type aliases to reference standard library types
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type Context = build.Context
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//go:linkname cgoSupported internal/platform.CgoSupported
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func cgoSupported(goos, goarch string) bool
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// defaultToolTags should be an internal detail,
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// but widely used packages access it using linkname.
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// Notable members of the hall of shame include:
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// - github.com/gopherjs/gopherjs
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//
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// Do not remove or change the type signature.
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// See go.dev/issue/67401.
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//
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//go:linkname defaultToolTags
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var defaultToolTags []string
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// defaultReleaseTags should be an internal detail,
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// but widely used packages access it using linkname.
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// Notable members of the hall of shame include:
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// - github.com/gopherjs/gopherjs
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//
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// Do not remove or change the type signature.
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// See go.dev/issue/67401.
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//
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//go:linkname defaultReleaseTags
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var defaultReleaseTags []string
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// parseGoVersion extracts the minor version number from runtime.Version()
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// e.g., "go1.24" or "go1.24.1" -> 24
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func parseGoVersion() int {
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v := runtime.Version()
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if strings.HasPrefix(v, "go") {
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v = v[2:]
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}
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parts := strings.Split(v, ".")
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if len(parts) >= 2 {
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if minor, err := strconv.Atoi(parts[1]); err == nil {
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return minor
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}
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}
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return 24
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}
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// defaultContext returns the default Context for builds.
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// LLGO PATCH: Sets Compiler = "gc" instead of runtime.Compiler
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func defaultContext() Context {
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var c Context
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c.GOARCH = runtime.GOARCH
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c.GOOS = runtime.GOOS
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if goroot := runtime.GOROOT(); goroot != "" {
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c.GOROOT = filepath.Clean(goroot)
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}
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c.GOPATH = envOr("GOPATH", defaultGOPATH())
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// LLGO PATCH: Use "gc" instead of runtime.Compiler to avoid "unknown compiler" error
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c.Compiler = "gc"
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c.ToolTags = append(c.ToolTags, buildToolTags()...)
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defaultToolTags = append([]string{}, c.ToolTags...)
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goVersion := parseGoVersion()
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for i := 1; i <= goVersion; i++ {
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c.ReleaseTags = append(c.ReleaseTags, "go1."+strconv.Itoa(i))
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}
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defaultReleaseTags = append([]string{}, c.ReleaseTags...)
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env := os.Getenv("CGO_ENABLED")
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if env == "" {
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env = "1"
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}
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switch env {
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case "1":
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c.CgoEnabled = true
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case "0":
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c.CgoEnabled = false
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default:
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if runtime.GOARCH == c.GOARCH && runtime.GOOS == c.GOOS {
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c.CgoEnabled = cgoSupported(c.GOOS, c.GOARCH)
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break
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}
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c.CgoEnabled = false
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}
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return c
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}
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func envOr(name, def string) string {
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s := os.Getenv(name)
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if s == "" {
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return def
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}
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return s
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}
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func defaultGOPATH() string {
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env := "HOME"
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if runtime.GOOS == "windows" {
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env = "USERPROFILE"
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} else if runtime.GOOS == "plan9" {
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env = "home"
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}
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if home := os.Getenv(env); home != "" {
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def := filepath.Join(home, "go")
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if filepath.Clean(def) == filepath.Clean(runtime.GOROOT()) {
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return ""
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}
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return def
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}
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return ""
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}
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// buildToolTags returns the tool tags for the current build configuration.
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// This is a simplified version that returns basic tags.
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func buildToolTags() []string {
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return []string{
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"gc",
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"goexperiment.boringcrypto",
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}
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}
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