diff --git a/cl/internal/cltest/cltest.go b/cl/internal/cltest/cltest.go
index de86e99dc..134259b11 100644
--- a/cl/internal/cltest/cltest.go
+++ b/cl/internal/cltest/cltest.go
@@ -41,5 +41,6 @@ func NC(cfg *llcppg.Config, fileMap map[string]*llcppg.FileInfo, convSym func(na
 		ConvSym:        convSym,
 		TrimPrefixes:   cfg.TrimPrefixes,
 		KeepUnderScore: cfg.KeepUnderScore,
+		GenThird:       cfg.GenThird,
 	}
 }
diff --git a/cl/internal/convert/convert.go b/cl/internal/convert/convert.go
index 4e5a1930f..f2bafdd8b 100644
--- a/cl/internal/convert/convert.go
+++ b/cl/internal/convert/convert.go
@@ -29,8 +29,9 @@ type Config struct {
 	Pkg       *ast.File
 	NC        nc.NodeConverter
 
-	Deps []string // dependent packages
-	Libs string
+	Deps     []string // dependent packages
+	Libs     string
+	GenThird bool // trird type not in generation
 }
 
 // if modulePath is not empty, init the module by modulePath
diff --git a/cl/internal/convert/convert_test.go b/cl/internal/convert/convert_test.go
index 73a7d3d3b..06ee45526 100644
--- a/cl/internal/convert/convert_test.go
+++ b/cl/internal/convert/convert_test.go
@@ -232,6 +232,7 @@ func testFrom(t *testing.T, dir string, gen bool, validateFunc func(t *testing.T
 		NC:        cltest.NC(&cfg, convertPkg.FileMap, cltest.GetConvSym(symbPath)),
 		Deps:      cfg.Deps,
 		Libs:      cfg.Libs,
+		GenThird:  true,
 	})
 	if err != nil {
 		t.Fatal(err)
@@ -417,7 +418,7 @@ func createJSONFile(filepath string, data any) error {
 }
 
 func callSigfetch(configFile string, dir string) ([]byte, error) {
-	cmd := exec.Command("llcppsigfetch", configFile)
+	cmd := exec.Command("llcppsigfetch", "-v", configFile)
 	cmd.Dir = dir
 
 	var out bytes.Buffer
diff --git a/cl/internal/convert/package.go b/cl/internal/convert/package.go
index 969b68d5d..3d12d42f6 100644
--- a/cl/internal/convert/package.go
+++ b/cl/internal/convert/package.go
@@ -260,6 +260,7 @@ func (p *Package) NewFuncDecl(goName string, funcDecl *ast.FuncDecl) error {
 	if debugLog {
 		log.Printf("NewFuncDecl: %v\n", funcDecl.Name)
 	}
+	// not need check , symbol not found will not generate
 
 	fnSpec, err := p.LookupFunc(goName, funcDecl)
 	if err != nil {
@@ -366,6 +367,10 @@ func (p *Package) NewTypeDecl(goName string, typeDecl *ast.TypeDecl, pnc nc.Node
 		log.Printf("NewTypeDecl: %s\n", typeDecl.Name.Name)
 	}
 
+	if p.lookupOrigin(typeDecl.Name.Name, goName) != nil {
+		return nil
+	}
+
 	cname := typeDecl.Name.Name
 	isForward := p.cvt.inComplete(typeDecl.Type)
 	name, changed, exist, err := p.RegisterNode(Node{name: cname, kind: TypeDecl}, goName, p.lookupOrigin)
@@ -467,6 +472,18 @@ func (p *Package) NewTypedefDecl(goName string, typedefDecl *ast.TypedefDecl, pn
 		log.Printf("NewTypedefDecl: %s\n", typedefDecl.Name.Name)
 	}
 
+	if typedefDecl.Name.Name == "__darwin_va_list" || typedefDecl.Name.Name == "__gnuc_va_list" {
+		typedefDecl.Type = &ast.PointerType{
+			X: &ast.BuiltinType{
+				Kind: ast.Void,
+			},
+		}
+	}
+
+	if p.lookupOrigin(typedefDecl.Name.Name, goName) != nil {
+		return nil
+	}
+
 	node := Node{name: typedefDecl.Name.Name, kind: TypedefDecl}
 	name, changed, exist, err := p.RegisterNode(node, goName, p.lookupOrigin)
 	if err != nil {
@@ -558,6 +575,11 @@ func (p *Package) NewEnumTypeDecl(goName string, enumTypeDecl *ast.EnumTypeDecl,
 	if debugLog {
 		log.Printf("NewEnumTypeDecl: %v\n", enumTypeDecl.Name)
 	}
+
+	if enumTypeDecl.Name != nil && p.lookupOrigin(enumTypeDecl.Name.Name, goName) != nil {
+		return nil
+	}
+
 	enumType, exist, err := p.createEnumType(goName, enumTypeDecl.Name, pnc)
 	if err != nil {
 		return fmt.Errorf("NewEnumTypeDecl: %v fail: %w", enumTypeDecl.Name, err)
diff --git a/cl/nc/ncimpl/ncimpl.go b/cl/nc/ncimpl/ncimpl.go
index 83a2512c1..0e25cff1e 100644
--- a/cl/nc/ncimpl/ncimpl.go
+++ b/cl/nc/ncimpl/ncimpl.go
@@ -42,6 +42,7 @@ type Converter struct {
 	Pubs           map[string]string
 	TrimPrefixes   []string
 	KeepUnderScore bool
+	GenThird       bool
 }
 
 func (p *Converter) convFile(file string, obj *ast.Object) (goFile string, ok bool) {
@@ -63,11 +64,11 @@ func (p *Converter) convFile(file string, obj *ast.Object) (goFile string, ok bo
 
 func (p *Converter) ConvDecl(file string, decl ast.Decl) (goName, goFile string, err error) {
 	obj := ast.ObjectOf(decl)
-	goFile, ok := p.convFile(file, obj)
-	if !ok {
-		err = nc.ErrSkip
-		return
-	}
+	goFile, _ = p.convFile(file, obj)
+	// if !ok {
+	// 	err = nc.ErrSkip
+	// 	return
+	// }
 	switch decl := decl.(type) {
 	case *ast.FuncDecl:
 		goName, err = p.ConvSym(obj, decl.MangledName)
@@ -89,11 +90,11 @@ func (p *Converter) ConvDecl(file string, decl ast.Decl) (goName, goFile string,
 }
 
 func (p *Converter) ConvMacro(file string, macro *ast.Macro) (goName, goFile string, err error) {
-	goFile, ok := p.convFile(file, nil)
-	if !ok {
-		err = nc.ErrSkip
-		return
-	}
+	goFile, _ = p.convFile(file, nil)
+	// if !ok {
+	// 	err = nc.ErrSkip
+	// 	return
+	// }
 	goName = p.constName(macro.Name)
 	return
 }
diff --git a/config/config.go b/config/config.go
index dedfdf255..53714d2f2 100644
--- a/config/config.go
+++ b/config/config.go
@@ -39,6 +39,7 @@ type Config struct {
 	TypeMap        map[string]string `json:"typeMap,omitempty"`
 	StaticLib      bool              `json:"staticLib,omitempty"`
 	HeaderOnly     bool              `json:"headerOnly,omitempty"`
+	GenThird       bool              `json:"genThird,omitempty"`
 }
 
 // json middleware for validating