67 lines
1.6 KiB
Go
67 lines
1.6 KiB
Go
package crosscompile
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import (
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"errors"
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"io/fs"
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"os"
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"path/filepath"
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"runtime"
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"github.com/goplus/llgo/internal/env"
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"github.com/goplus/llgo/internal/xtool/llvm"
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)
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type Export struct {
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CCFLAGS []string
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CFLAGS []string
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LDFLAGS []string
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}
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const wasiSdkUrl = "https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-25/wasi-sdk-25.0-x86_64-macos.tar.gz"
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func cacheDir() string {
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return filepath.Join(env.LLGoCacheDir(), "crosscompile")
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}
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func UseCrossCompileSDK(goos, goarch string, wasiThreads bool) (export Export, err error) {
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if runtime.GOOS == goos && runtime.GOARCH == goarch {
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// not cross compile
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return
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}
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if goarch == "wasm" {
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sdkDir := filepath.Join(cacheDir(), llvm.GetTargetTriple(goos, goarch))
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if _, err = os.Stat(sdkDir); err != nil {
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if !errors.Is(err, fs.ErrNotExist) {
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return
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}
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if err = downloadAndExtract(wasiSdkUrl, sdkDir); err != nil {
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return
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}
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}
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triple := "wasm32-wasip1"
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if wasiThreads {
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triple = "wasm32-wasip1-threads"
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}
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// Set up flags for the SDK
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wasiSdkRoot := filepath.Join(sdkDir, "wasi-sdk-25.0-x86_64-macos")
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sysrootDir := filepath.Join(wasiSdkRoot, "share", "wasi-sysroot")
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libclangDir := filepath.Join(wasiSdkRoot, "lib", "clang", "19")
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includeDir := filepath.Join(sysrootDir, "include", triple)
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libDir := filepath.Join(sysrootDir, "lib", triple)
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export.CCFLAGS = []string{
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"--sysroot=" + sysrootDir,
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"-resource-dir=" + libclangDir,
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}
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export.CFLAGS = []string{
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"-I" + includeDir,
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}
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export.LDFLAGS = []string{
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"-L" + libDir,
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}
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return
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}
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// TODO(lijie): supports other platforms
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return
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}
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