chore: fix some wrong commets

internal/crosscompile/compile/compile.go

@@ -27,12 +27,16 @@ type CompileGroup struct {
 	LDFlags        []string // Linker flags
 }
 
+// IsCompiled checks if the compile group has already been compiled by verifying
+// if the output archive file exists in the specified directory
 func (g CompileGroup) IsCompiled(outputDir string) bool {
 	archive := filepath.Join(outputDir, filepath.Base(g.OutputFileName))
 	_, err := os.Stat(archive)
 	return err == nil
 }
 
+// Compile compiles all source files in the group into a static library archive
+// If the archive already exists, compilation is skipped
 func (g CompileGroup) Compile(
 	outputDir string, options CompileOptions,
 ) (err error) {
@@ -101,11 +105,13 @@ type CompileConfig struct {
 
 type LibConfig struct {
 	Url           string
-	Name          string // compile name (e.g., "picolibc", "musl", "glibc")
+	Name          string // Library name (e.g., "picolibc", "musl", "glibc")
 	Version       string
 	ArchiveSrcDir string
 }
 
+// String returns a string representation of the library configuration
+// in the format "name-version"
 func (cfg LibConfig) String() string {
 	return fmt.Sprintf("%s-%s", cfg.Name, cfg.Version)
 }

internal/crosscompile/compile/compile_test.go

@@ -11,8 +11,8 @@ import (
 	"github.com/goplus/llgo/xtool/nm"
 )
 
-func TestIsCompile(t *testing.T) {
-	t.Run("IsCompile Not Exists", func(t *testing.T) {
+func TestIsCompiled(t *testing.T) {
+	t.Run("IsCompiled Not Exists", func(t *testing.T) {
 		cfg := CompileConfig{
 			Groups: []CompileGroup{
 				{
@@ -25,7 +25,7 @@ func TestIsCompile(t *testing.T) {
 			t.Errorf("unexpected result: should false")
 		}
 	})
-	t.Run("IsCompile Exists", func(t *testing.T) {
+	t.Run("IsCompiled Exists", func(t *testing.T) {
 		tmpFile, err := os.CreateTemp("", "test*.a")
 		if err != nil {
 			t.Error(err)

internal/crosscompile/compile/libc/newlibesp.go

@@ -21,10 +21,12 @@ var _libcCCFlags = []string{
 	"-ffreestanding",
 }
 
+// withDefaultCCFlags appends default C compiler flags to the provided flags
 func withDefaultCCFlags(ccflags []string) []string {
 	return append(ccflags, _libcCCFlags...)
 }
 
+// GetNewlibESP32Config returns the configuration for downloading and building newlib for ESP32
 func GetNewlibESP32Config() compile.LibConfig {
 	return compile.LibConfig{
 		Url:           "https://github.com/goplus/newlib/archive/refs/tags/esp-4.3.0_20250211-patch3.tar.gz",

internal/crosscompile/compile/libc/picolibc.go

@@ -7,6 +7,7 @@ import (
 	"github.com/goplus/llgo/internal/crosscompile/compile"
 )
 
+// GetPicolibcConfig returns the configuration for downloading and building picolibc
 func GetPicolibcConfig() compile.LibConfig {
 	return compile.LibConfig{
 		Name:          "picolibc",

internal/crosscompile/crosscompile.go

@@ -167,10 +167,14 @@ func getESPClangPlatform(goos, goarch string) string {
 	return ""
 }
 
+// ldFlagsFromFileName extracts the library name from a filename for use in linker flags
+// For example, "libmath.a" becomes "math" for use with "-lmath"
 func ldFlagsFromFileName(fileName string) string {
 	return strings.TrimPrefix(strings.TrimSuffix(fileName, ".a"), "lib")
 }
 
+// compileWithConfig compiles libraries according to the provided configuration
+// and returns the necessary linker flags for linking against the compiled libraries
 func compileWithConfig(
 	compileConfig compile.CompileConfig,
 	outputDir string, options compile.CompileOptions,

internal/crosscompile/crosscompile_test.go

@@ -37,10 +37,10 @@ func TestUseCrossCompileSDK(t *testing.T) {
 			name:          "Same Platform",
 			goos:          runtime.GOOS,
 			goarch:        runtime.GOARCH,
-			expectSDK:     true,  // Changed: now we expect flags even for same platform
-			expectCCFlags: true,  // Changed: CCFLAGS will contain sysroot
-			expectCFlags:  false, // Changed: CFLAGS will not contain include paths
-			expectLDFlags: false, // Changed: LDFLAGS will not contain library paths
+			expectSDK:     true,  // We expect flags even for same platform
+			expectCCFlags: true,  // CCFLAGS will contain sysroot
+			expectCFlags:  false, // CFLAGS will not contain include paths
+			expectLDFlags: false, // LDFLAGS will not contain library paths
 		},
 		{
 			name:          "WASM Target",

internal/crosscompile/libc.go

@@ -12,7 +12,7 @@ import (
 // for testing, in testing env, we use fake path, it will cause downloading failure
 var needSkipDownload = false
 
-// GetCompileConfigByName retrieves libc compilation configuration by name
+// getLibcCompileConfigByName retrieves libc compilation configuration by name
 // Returns compilation file lists and corresponding cflags
 func getLibcCompileConfigByName(baseDir, libcName, target, mcpu string) (outputDir string, cfg compile.CompileConfig, err error) {
 	if libcName == "" {
@@ -47,6 +47,8 @@ func getLibcCompileConfigByName(baseDir, libcName, target, mcpu string) (outputD
 	return libcDir, compileConfig, nil
 }
 
+// getRTCompileConfigByName retrieves runtime library compilation configuration by name
+// Returns compilation file lists and corresponding flags for the specified runtime library
 func getRTCompileConfigByName(baseDir, rtName, target string) (outputDir string, cfg compile.CompileConfig, err error) {
 	if rtName == "" {
 		err = fmt.Errorf("rt name cannot be empty")