diff --git a/runtime/internal/lib/go/build/build.go b/runtime/internal/lib/go/build/build.go
index 65afc07f..b79c5a69 100644
--- a/runtime/internal/lib/go/build/build.go
+++ b/runtime/internal/lib/go/build/build.go
@@ -14,8 +14,7 @@ import (
 	"runtime"
 	"strconv"
 	"strings"
-
-	"github.com/goplus/llgo/runtime/internal/lib/internal/platform"
+	_ "unsafe"
 )
 
 // Type aliases to reference standard library types
@@ -79,7 +78,7 @@ func defaultContext() Context {
 		c.CgoEnabled = false
 	default:
 		if runtime.GOARCH == c.GOARCH && runtime.GOOS == c.GOOS {
-			c.CgoEnabled = platform.CgoSupported(c.GOOS, c.GOARCH)
+			c.CgoEnabled = cgoSupported(c.GOOS, c.GOARCH)
 			break
 		}
 		c.CgoEnabled = false
@@ -122,3 +121,6 @@ func buildToolTags() []string {
 		"goexperiment.boringcrypto", // Default boring crypto experiment
 	}
 }
+
+//go:linkname cgoSupported internal/platform.CgoSupported
+func cgoSupported(goos, goarch string) bool
diff --git a/runtime/internal/lib/internal/platform/platform.go b/runtime/internal/lib/internal/platform/platform.go
deleted file mode 100644
index f5b1f6c7..00000000
--- a/runtime/internal/lib/internal/platform/platform.go
+++ /dev/null
@@ -1,65 +0,0 @@
-// Copyright 2024 The GoPlus Authors (goplus.org). All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package platform provides platform-specific utilities.
-package platform
-
-// llgo:skipall
-type _platform struct{}
-
-// An OSArch is a pair of GOOS and GOARCH values indicating a platform.
-type OSArch struct {
-	GOOS, GOARCH string
-}
-
-func (p OSArch) String() string {
-	return p.GOOS + "/" + p.GOARCH
-}
-
-// osArchInfo describes information about an OSArch.
-type osArchInfo struct {
-	CgoSupported bool
-	FirstClass   bool
-	Broken       bool
-}
-
-// distInfo maps OSArch to information about cgo support.
-// This is a simplified version covering the most common platforms.
-var distInfo = map[OSArch]osArchInfo{
-	{"darwin", "amd64"}:   {CgoSupported: true, FirstClass: true},
-	{"darwin", "arm64"}:   {CgoSupported: true, FirstClass: true},
-	{"linux", "386"}:      {CgoSupported: true, FirstClass: true},
-	{"linux", "amd64"}:    {CgoSupported: true, FirstClass: true},
-	{"linux", "arm"}:      {CgoSupported: true, FirstClass: true},
-	{"linux", "arm64"}:    {CgoSupported: true, FirstClass: true},
-	{"linux", "ppc64le"}:  {CgoSupported: true},
-	{"linux", "riscv64"}:  {CgoSupported: true},
-	{"linux", "s390x"}:    {CgoSupported: true},
-	{"windows", "386"}:    {CgoSupported: true, FirstClass: true},
-	{"windows", "amd64"}:  {CgoSupported: true, FirstClass: true},
-	{"windows", "arm64"}:  {CgoSupported: true},
-	{"freebsd", "386"}:    {CgoSupported: true},
-	{"freebsd", "amd64"}:  {CgoSupported: true},
-	{"freebsd", "arm"}:    {CgoSupported: true},
-	{"freebsd", "arm64"}:  {CgoSupported: true},
-	{"openbsd", "386"}:    {CgoSupported: true},
-	{"openbsd", "amd64"}:  {CgoSupported: true},
-	{"openbsd", "arm"}:    {CgoSupported: true},
-	{"openbsd", "arm64"}:  {CgoSupported: true},
-	{"netbsd", "386"}:     {CgoSupported: true},
-	{"netbsd", "amd64"}:   {CgoSupported: true},
-	{"netbsd", "arm"}:     {CgoSupported: true},
-	{"netbsd", "arm64"}:   {CgoSupported: true},
-	{"android", "386"}:    {CgoSupported: true},
-	{"android", "amd64"}:  {CgoSupported: true},
-	{"android", "arm"}:    {CgoSupported: true},
-	{"android", "arm64"}:  {CgoSupported: true},
-	{"illumos", "amd64"}:  {CgoSupported: true},
-	{"solaris", "amd64"}:  {CgoSupported: true},
-}
-
-// CgoSupported reports whether goos/goarch supports cgo.
-func CgoSupported(goos, goarch string) bool {
-	return distInfo[OSArch{goos, goarch}].CgoSupported
-}