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optional use esp clang for non-cross-compilation

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This commit is contained in:
Li Jie
2025-08-24 17:24:38 +08:00
parent e4218f90d7
commit ca30338066
3 changed files with 42 additions and 32 deletions
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57
internal/crosscompile/crosscompile.go
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@@ -156,7 +156,7 @@ func getMacOSSysroot() (string, error) {
// getESPClangRoot returns the ESP Clang root directory, checking LLGoROOT first,
// then downloading if needed and platform is supported
func getESPClangRoot() (clangRoot string, err error) {
func getESPClangRoot(forceEspClang bool) (clangRoot string, err error) {
llgoRoot := env.LLGoROOT()
// First check if clang exists in LLGoROOT
@@ -166,6 +166,10 @@ func getESPClangRoot() (clangRoot string, err error) {
return
}
if !forceEspClang {
return "", nil
}
// Try to download ESP Clang if platform is supported
platformSuffix := getESPClangPlatform(runtime.GOOS, runtime.GOARCH)
if platformSuffix != "" {
@@ -215,52 +219,57 @@ func getESPClangPlatform(goos, goarch string) string {
return ""
}
func use(goos, goarch string, wasiThreads bool) (export Export, err error) {
func use(goos, goarch string, wasiThreads, forceEspClang bool) (export Export, err error) {
targetTriple := llvm.GetTargetTriple(goos, goarch)
llgoRoot := env.LLGoROOT()
// Check for ESP Clang support for target-based builds
clangRoot, err := getESPClangRoot()
clangRoot, err := getESPClangRoot(forceEspClang)
if err != nil {
return
}
// Set ClangRoot and CC if clang is available
export.ClangRoot = clangRoot
export.CC = filepath.Join(clangRoot, "bin", "clang++")
if clangRoot != "" {
export.CC = filepath.Join(clangRoot, "bin", "clang++")
} else {
export.CC = "clang++"
}
if runtime.GOOS == goos && runtime.GOARCH == goarch {
clangLib := filepath.Join(clangRoot, "lib")
clangInc := filepath.Join(clangRoot, "include")
// not cross compile
// Set up basic flags for non-cross-compile
export.LDFLAGS = []string{
"-L" + clangLib,
"-target", targetTriple,
"-Qunused-arguments",
"-Wno-unused-command-line-argument",
"-Wl,--error-limit=0",
"-fuse-ld=lld",
}
export.CFLAGS = append(export.CFLAGS, "-I"+clangInc)
if clangRoot != "" {
clangLib := filepath.Join(clangRoot, "lib")
clangInc := filepath.Join(clangRoot, "include")
export.CFLAGS = append(export.CFLAGS, "-I"+clangInc)
export.LDFLAGS = append(export.LDFLAGS, "-L"+clangLib)
// Add platform-specific rpath flags
switch goos {
case "darwin":
export.LDFLAGS = append(export.LDFLAGS, "-Wl,-rpath,"+clangLib)
case "linux":
export.LDFLAGS = append(export.LDFLAGS, "-Wl,-rpath,"+clangLib)
case "windows":
// Windows doesn't support rpath, DLLs should be in PATH or same directory
default:
// For other Unix-like systems, try the generic rpath
export.LDFLAGS = append(export.LDFLAGS, "-Wl,-rpath,"+clangLib)
}
}
export.CCFLAGS = []string{
"-Qunused-arguments",
"-Wno-unused-command-line-argument",
}
// Add platform-specific rpath flags
switch goos {
case "darwin":
export.LDFLAGS = append(export.LDFLAGS, "-Wl,-rpath,"+clangLib)
case "linux":
export.LDFLAGS = append(export.LDFLAGS, "-Wl,-rpath,"+clangLib)
case "windows":
// Windows doesn't support rpath, DLLs should be in PATH or same directory
default:
// For other Unix-like systems, try the generic rpath
export.LDFLAGS = append(export.LDFLAGS, "-Wl,-rpath,"+clangLib)
}
// Add sysroot for macOS only
if goos == "darwin" {
sysrootPath, sysrootErr := getMacOSSysroot()
@@ -452,7 +461,7 @@ func useTarget(targetName string) (export Export, err error) {
}
// Check for ESP Clang support for target-based builds
clangRoot, err := getESPClangRoot()
clangRoot, err := getESPClangRoot(true)
if err != nil {
return
}
@@ -585,9 +594,9 @@ func useTarget(targetName string) (export Export, err error) {
// Use extends the original Use function to support target-based configuration
// If targetName is provided, it takes precedence over goos/goarch
func Use(goos, goarch string, wasiThreads bool, targetName string) (export Export, err error) {
func Use(goos, goarch, targetName string, wasiThreads, forceEspClang bool) (export Export, err error) {
if targetName != "" {
return useTarget(targetName)
}
return use(goos, goarch, wasiThreads)
return use(goos, goarch, wasiThreads, forceEspClang)
}