diff --git a/cl/ctx.go b/cl/ctx.go
index ce7e520f..4ded6117 100644
--- a/cl/ctx.go
+++ b/cl/ctx.go
@@ -274,7 +274,7 @@ func (p *pkgCtx) typeOf(cName string) (types.Type, bool) {
 }
 
 func (p *pkgCtx) isTypeIgnored(cName string) bool {
-	return contains(cName, p.typeIgnores)
+	return contains(trimTypeTag(cName), p.typeIgnores)
 }
 
 func (p *pkgCtx) isNSIgnored(ns string) bool {
diff --git a/cl/type.go b/cl/type.go
index 5b6de45e..2fd30244 100644
--- a/cl/type.go
+++ b/cl/type.go
@@ -165,7 +165,7 @@ func toTypeEx(ctx *pkgCtx, pkg *types.Package, typ lc.Type, flags int, feats *in
 			return t
 		}
 	case lc.Type_BlockPointer:
-		ctx.logtf(typ, "C blocks (closures) are unsupported, ignored")
+		ctx.logtf(typ, "type %s: C blocks (closures) are unsupported, ignored", clang.String(typ))
 		*feats |= featIgnored
 		return types.Typ[types.UnsafePointer]
 	default:
diff --git a/cl/typedef.go b/cl/typedef.go
index ab2214fb..38d4e7d3 100644
--- a/cl/typedef.go
+++ b/cl/typedef.go
@@ -28,7 +28,8 @@ import (
 
 func loadTypedef(ctx *pkgCtx, decl clang.Cursor, ns string, scope *scopeCtx) {
 	cName := clang.String(decl.Type())
-	if ctx.isTypeIgnored(cName) {
+	localName := clang.String(decl) // TODO(xsw): use full name with namespace
+	if ctx.isTypeIgnored(localName) {
 		if debugCompileDecl {
 			log.Println("typedef", cName, "- ignored")
 		}
@@ -36,7 +37,7 @@ func loadTypedef(ctx *pkgCtx, decl clang.Cursor, ns string, scope *scopeCtx) {
 		return
 	}
 
-	origName := nameWithNS(clang.String(decl), ns)
+	origName := nameWithNS(localName, ns)
 	if decl.Kind == lc.Cursor_TypeAliasTemplateDecl {
 		ctx.logf(decl, "typedef %s: template type alias, skipped", origName)
 		return
diff --git a/cmd/llcppg/gen.go b/cmd/llcppg/gen.go
new file mode 100644
index 00000000..c618343b
--- /dev/null
+++ b/cmd/llcppg/gen.go
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2026 The XGo Authors (xgo.dev). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/goplus/gogen"
+	"github.com/goplus/llcppg/clang"
+	"github.com/goplus/llcppg/tool"
+	"github.com/qiniu/x/errors"
+)
+
+// -----------------------------------------------------------------------------
+
+// Gen generates Go files from the C/C++ header files and llcppg.cfg in the specified
+// source directory and writes them to the destination directory. It uses the provided
+// clang index for parsing.
+func Gen(destDir, srcDir string, index clang.Index) (err error) {
+	cfg, err := tool.LoadConf(filepath.Join(srcDir, "llcppg.cfg"))
+	if err != nil {
+		return
+	}
+	if strings.Contains(cfg.Name, "/") {
+		err = errors.New("invalid package name: " + cfg.Name)
+		return
+	}
+	mainPkgName := cfg.Name
+
+	if len(cfg.Pkgs) == 0 {
+		return genPkg(destDir, srcDir, mainPkgName, index, &cfg)
+	}
+
+	errPkgCnt := 0
+	for _, pkgSel := range cfg.Pkgs {
+		cfgFile := filepath.Join(srcDir, "llcppg-"+pkgSel+".cfg")
+		subConf, err := tool.LoadConf(cfgFile)
+		if err != nil {
+			fmt.Fprintln(os.Stderr, "LoadConf failed:", err)
+			errPkgCnt++
+			continue
+		}
+		if !strings.HasPrefix(subConf.Name, "/") {
+			fmt.Fprintf(os.Stderr,
+				"sub package %s: name must start with / but got %s\n", pkgSel, subConf.Name)
+			errPkgCnt++
+			continue
+		}
+		subConf.Apply(&cfg)
+		errPkgCnt += convPkg(destDir, srcDir, mainPkgName, index, &subConf)
+	}
+	if errPkgCnt > 0 {
+		return fmt.Errorf("%d package(s) failed during generation", errPkgCnt)
+	}
+	return nil
+}
+
+func convPkg(destDir, srcDir, mainPkgName string, index clang.Index, cfg *tool.Config) int {
+	err := genPkg(destDir, srcDir, mainPkgName, index, cfg)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		return 1
+	}
+	return 0
+}
+
+func genPkg(destDir, srcDir, mainPkgName string, index clang.Index, cfg *tool.Config) (err error) {
+	pkgName := cfg.Name
+	if pos := strings.LastIndex(pkgName, "/"); pos >= 0 {
+		destDir = filepath.Join(destDir, pkgName[len(mainPkgName)+1:])
+		pkgName = pkgName[pos+1:]
+	}
+
+	err = os.MkdirAll(destDir, 0755)
+	if err != nil {
+		return
+	}
+
+	pkg, _, err := cfg.NewPackage("", pkgName, srcDir, index)
+	if err != nil {
+		return
+	}
+
+	var errs errors.List
+	var old = gogen.GeneratedHeader
+	defer func() {
+		gogen.GeneratedHeader = old
+	}()
+	gogen.GeneratedHeader = tool.GeneratedHeader
+	pkg.ForEachFile(func(fname string, file *gogen.File) {
+		if file.Empty() {
+			return // skip empty Go files
+		}
+		goFile := filepath.Join(destDir, fname)
+		e := pkg.WriteFile(goFile, fname)
+		if e != nil {
+			errs.Add(e)
+		}
+	})
+	return errs.ToError()
+}
+
+// -----------------------------------------------------------------------------
diff --git a/cmd/llcppg/llcppg.go b/cmd/llcppg/llcppg.go
index 9bb8f8fe..d194e302 100644
--- a/cmd/llcppg/llcppg.go
+++ b/cmd/llcppg/llcppg.go
@@ -53,7 +53,7 @@ func main() {
 
 	idx := clang.CreateIndex(1, 1)
 	defer idx.Dispose()
-	err := tool.Gen(destDir, srcDir, idx)
+	err := Gen(destDir, srcDir, idx)
 	if err != nil {
 		fmt.Fprintln(os.Stderr, err)
 		os.Exit(1)
diff --git a/tool/config.go b/tool/config.go
index 623c24f9..3e7966aa 100644
--- a/tool/config.go
+++ b/tool/config.go
@@ -28,10 +28,10 @@ import (
 // -----------------------------------------------------------------------------
 
 type Config struct {
-	Name        string            `json:"Name"`        // required, sub package name should sarts with '/'
+	Name        string            `json:"Name"`        // required, sub package name should start with '/'
 	Language    string            `json:"Language"`    // c, c++, etc. required
 	Dir         string            `json:"Dir"`         // dir or dir/... (recursive), required
-	Files       []string          `json:"Files"`       // selected header files, optional
+	Files       []string          `json:"Files"`       // selected header files relative to Dir; overrides auto-discovery, optional.
 	Stdlib      string            `json:"Stdlib"`      // C stdlib include dir, optional
 	LLGoPackage string            `json:"LLGoPackage"` // optional
 	CFlags      string            `json:"CFlags"`      // optional
diff --git a/tool/gen.go b/tool/gen.go
index 67225f99..d4b9f289 100644
--- a/tool/gen.go
+++ b/tool/gen.go
@@ -26,7 +26,6 @@ import (
 	"sort"
 	"strings"
 
-	"github.com/goplus/gogen"
 	"github.com/goplus/gogen/packages"
 	"github.com/goplus/gogen/packages/cache"
 	"github.com/goplus/llcppg/cl"
@@ -330,43 +329,3 @@ func DisposeSources(sources []cl.Source) {
 }
 
 // -----------------------------------------------------------------------------
-
-// Gen generates Go files from the C/C++ header files and llcppg.cfg in the specified
-// source directory and writes them to the destination directory. It uses the provided
-// clang index for parsing.
-func Gen(destDir, srcDir string, index clang.Index) (err error) {
-	cfg, err := LoadConf(filepath.Join(srcDir, "llcppg.cfg"))
-	if err != nil {
-		return
-	}
-
-	err = os.MkdirAll(destDir, 0755)
-	if err != nil {
-		return
-	}
-
-	pkg, _, err := cfg.NewPackage("", "", srcDir, index)
-	if err != nil {
-		return
-	}
-
-	var errs errors.List
-	var old = gogen.GeneratedHeader
-	defer func() {
-		gogen.GeneratedHeader = old
-	}()
-	gogen.GeneratedHeader = GeneratedHeader
-	pkg.ForEachFile(func(fname string, file *gogen.File) {
-		if file.Empty() {
-			return // skip empty Go files
-		}
-		goFile := filepath.Join(destDir, fname)
-		e := pkg.WriteFile(goFile, fname)
-		if e != nil {
-			errs.Add(e)
-		}
-	})
-	return errs.ToError()
-}
-
-// -----------------------------------------------------------------------------