diff --git a/.github/actions/setup-goreleaser/action.yml b/.github/actions/setup-goreleaser/action.yml
new file mode 100644
index 00000000..d4ef8665
--- /dev/null
+++ b/.github/actions/setup-goreleaser/action.yml
@@ -0,0 +1,37 @@
+name: "Setup GoReleaser"
+description: "Setup GoReleaser environment"
+inputs:
+  darwin-cache-key:
+    description: "Darwin sysroot cache key"
+    required: true
+  linux-cache-key:
+    description: "Linux sysroot cache key"
+    required: true
+runs:
+  using: "composite"
+  steps:
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: 1.24.x
+    - name: Restore Darwin sysroot cache
+      id: cache-darwin-sysroot
+      uses: actions/cache/restore@v4
+      with:
+        path: .sysroot/darwin.tar.gz
+        key: ${{ inputs.darwin-cache-key }}
+    - name: Restore Linux sysroot cache
+      id: cache-linux-sysroot
+      uses: actions/cache/restore@v4
+      with:
+        path: .sysroot/linux.tar.gz
+        key: ${{ inputs.linux-cache-key }}
+    - name: Populate Darwin sysroot
+      run: tar -xzvf .sysroot/darwin.tar.gz -C .sysroot
+      shell: bash
+    - name: Populate Linux sysroot
+      run: tar -xzvf .sysroot/linux.tar.gz -C .sysroot
+      shell: bash
+    - name: Check file
+      run: tree .sysroot
+      shell: bash
diff --git a/.github/actions/test-helloworld/action.yml b/.github/actions/test-helloworld/action.yml
index 76b92a70..9ce49ef9 100644
--- a/.github/actions/test-helloworld/action.yml
+++ b/.github/actions/test-helloworld/action.yml
@@ -1,11 +1,11 @@
-name: 'Test Hello World'
-description: 'Test Hello World with specific Go and module versions'
+name: "Test Hello World"
+description: "Test Hello World with specific Go and module versions"
 inputs:
   go-version:
-    description: 'Go version being tested'
+    description: "Go version being tested"
     required: true
   mod-version:
-    description: 'Go module version to use'
+    description: "Go module version to use"
     required: true
 runs:
   using: "composite"
@@ -24,12 +24,30 @@ runs:
         import (
           "fmt"
           "github.com/goplus/lib/c"
+          "github.com/goplus/lib/cpp/std"
         )
         func main() {
             fmt.Println("Hello, LLGo!")
             println("Hello, LLGo!")
             c.Printf(c.Str("Hello, LLGo!\n"))
+            c.Printf(std.Str("Hello LLGo by cpp/std.Str\n").CStr())
         }
         EOL
         go mod tidy
-        llgo run .
+        EXPECTED="Hello, LLGo!
+        Hello, LLGo!
+        Hello, LLGo!
+        Hello LLGo by cpp/std.Str"
+        OUTPUT=$(llgo run . 2>&1)
+        if echo "$OUTPUT" | grep -qF "$EXPECTED"; then
+            echo "Basic test passed"
+        else
+            echo "Basic test failed"
+            echo "Expected to contain:"
+            echo "$EXPECTED"
+            echo "Got:"
+            echo "$OUTPUT"
+            exit 1
+        fi
+
+        #TODO(zzy): Test embed targets, need dispatch target dir
diff --git a/.github/workflows/doc.yml b/.github/workflows/doc.yml
index a0372c1d..6b4ec81c 100644
--- a/.github/workflows/doc.yml
+++ b/.github/workflows/doc.yml
@@ -2,7 +2,9 @@ name: Docs
 
 on:
   push:
-    branches: ["**"]
+    branches: 
+      - "**"
+      - "!dependabot/**"
   pull_request:
     branches: ["**"]
 
diff --git a/.github/workflows/fmt.yml b/.github/workflows/fmt.yml
index 3ef78aff..b29aa066 100644
--- a/.github/workflows/fmt.yml
+++ b/.github/workflows/fmt.yml
@@ -2,7 +2,9 @@ name: Format Check
 
 on:
   push:
-    branches: ["**"]
+    branches: 
+      - "**"
+      - "!dependabot/**"
   pull_request:
     branches: ["**"]
 
diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 7fb0ebed..df6ff534 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -5,7 +5,9 @@ name: Go
 
 on:
   push:
-    branches: ["**"]
+    branches: 
+      - "**"
+      - "!dependabot/**"
   pull_request:
     branches: ["**"]
 
diff --git a/.github/workflows/llgo.yml b/.github/workflows/llgo.yml
index b0f1edeb..72950dde 100644
--- a/.github/workflows/llgo.yml
+++ b/.github/workflows/llgo.yml
@@ -5,7 +5,9 @@ name: LLGo
 
 on:
   push:
-    branches: ["**"]
+    branches: 
+      - "**"
+      - "!dependabot/**"
   pull_request:
     branches: ["**"]
 
diff --git a/.github/workflows/release-build.yml b/.github/workflows/release-build.yml
index 717fff66..49399c70 100644
--- a/.github/workflows/release-build.yml
+++ b/.github/workflows/release-build.yml
@@ -2,60 +2,228 @@ name: Release Build
 
 on:
   push:
-    tags:
-      - "*"
+    branches: ["**"]
+    tags: ["*"]
+  pull_request:
+    branches: ["**"]
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
   cancel-in-progress: true
 
 jobs:
+  setup:
+    runs-on: ubuntu-latest
+    outputs:
+      darwin-cache-key: ${{ steps.cache-keys.outputs.darwin-key }}
+      linux-cache-key: ${{ steps.cache-keys.outputs.linux-key }}
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v5
+      - name: Calculate cache keys
+        id: cache-keys
+        run: |
+          DARWIN_KEY="darwin-sysroot-${{ hashFiles('.github/workflows/populate_darwin_sysroot.sh', '.github/workflows/release-build.yml') }}"
+          LINUX_KEY="linux-sysroot-${{ hashFiles('.github/workflows/populate_linux_sysroot.sh', '.github/workflows/release-build.yml') }}"
+          echo "darwin-key=$DARWIN_KEY" >> $GITHUB_OUTPUT
+          echo "linux-key=$LINUX_KEY" >> $GITHUB_OUTPUT
+
   populate-darwin-sysroot:
     runs-on: macos-latest
     timeout-minutes: 30
+    needs: setup
     steps:
       - name: Check out code
         uses: actions/checkout@v5
+      - name: Check Darwin sysroot cache
+        id: cache-darwin-sysroot
+        uses: actions/cache/restore@v4
+        with:
+          path: .sysroot/darwin.tar.gz
+          key: ${{ needs.setup.outputs.darwin-cache-key }}
+          lookup-only: true
       - name: Populate Darwin sysroot
+        if: steps.cache-darwin-sysroot.outputs.cache-hit != 'true'
         run: bash .github/workflows/populate_darwin_sysroot.sh
       - name: Create Darwin sysroot tarball
+        if: steps.cache-darwin-sysroot.outputs.cache-hit != 'true'
         run: tar -czvf .sysroot/darwin.tar.gz -C .sysroot darwin
-      - name: Upload Darwin sysroot tarball
-        uses: actions/upload-artifact@v4
+      - name: Save Darwin sysroot cache
+        if: steps.cache-darwin-sysroot.outputs.cache-hit != 'true'
+        uses: actions/cache/save@v4
         with:
-          name: darwin-sysroot-tarball
           path: .sysroot/darwin.tar.gz
-          compression-level: 0
-  build:
+          key: ${{ needs.setup.outputs.darwin-cache-key }}
+  populate-linux-sysroot:
     runs-on: ubuntu-latest
-    needs: populate-darwin-sysroot
+    needs: setup
     timeout-minutes: 30
     steps:
       - name: Check out code
         uses: actions/checkout@v5
+      - name: Check Linux sysroot cache
+        id: cache-linux-sysroot
+        uses: actions/cache/restore@v4
         with:
-          fetch-depth: 0
-      - name: Set up Go
-        uses: actions/setup-go@v6
-        with:
-          go-version: 1.24.x
+          path: .sysroot/linux.tar.gz
+          key: ${{ needs.setup.outputs.linux-cache-key }}
+          lookup-only: true
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
+        if: steps.cache-linux-sysroot.outputs.cache-hit != 'true'
         with:
           image: tonistiigi/binfmt:qemu-v7.0.0-28
-      - name: Download Darwin sysroot tarball
-        uses: actions/download-artifact@v5
-        with:
-          name: darwin-sysroot-tarball
-          path: .sysroot
-      - name: Populate Darwin sysroot
-        run: tar -xzvf .sysroot/darwin.tar.gz -C .sysroot
       - name: Populate Linux sysroot
+        if: steps.cache-linux-sysroot.outputs.cache-hit != 'true'
         run: bash .github/workflows/populate_linux_sysroot.sh
-      - name: Run GoReleaser
+      - name: Create Linux sysroot tarball
+        if: steps.cache-linux-sysroot.outputs.cache-hit != 'true'
+        run: tar -czvf .sysroot/linux.tar.gz -C .sysroot linux
+      - name: Save Linux sysroot cache
+        if: steps.cache-linux-sysroot.outputs.cache-hit != 'true'
+        uses: actions/cache/save@v4
+        with:
+          path: .sysroot/linux.tar.gz
+          key: ${{ needs.setup.outputs.linux-cache-key }}
+  build:
+    runs-on: ubuntu-latest
+    needs: [setup, populate-darwin-sysroot, populate-linux-sysroot]
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v5
+      - name: Set up Release
+        uses: ./.github/actions/setup-goreleaser
+        with:
+          darwin-cache-key: ${{ needs.setup.outputs.darwin-cache-key }}
+          linux-cache-key: ${{ needs.setup.outputs.linux-cache-key }}
+      - name: Run GoReleaser (Build & Test)
         env:
           GITHUB_TOKEN: ${{github.token}}
         run: |
+          docker run \
+            --rm \
+            -e GITHUB_TOKEN=${GITHUB_TOKEN} \
+            -v /var/run/docker.sock:/var/run/docker.sock \
+            -v $(pwd):/go/src/llgo \
+            -w /go/src/llgo \
+            ghcr.io/goreleaser/goreleaser-cross:v1.22 \
+            release --skip=publish,nfpm,snapcraft --snapshot --clean
+
+      - name: Upload Darwin AMD64 Artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: llgo-darwin-amd64
+          path: .dist/*darwin-amd64.tar.gz
+          retention-days: 3
+          include-hidden-files: true
+
+      - name: Upload Darwin ARM64 Artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: llgo-darwin-arm64
+          path: .dist/*darwin-arm64.tar.gz
+          retention-days: 3
+          include-hidden-files: true
+
+      - name: Upload Linux AMD64 Artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: llgo-linux-amd64
+          path: .dist/*linux-amd64.tar.gz
+          retention-days: 3
+          include-hidden-files: true
+
+      - name: Upload Linux ARM64 Artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: llgo-linux-arm64
+          path: .dist/*linux-arm64.tar.gz
+          retention-days: 3
+          include-hidden-files: true
+
+      - name: Upload Checksums
+        uses: actions/upload-artifact@v4
+        with:
+          name: llgo-checksums
+          path: .dist/*checksums.txt
+          retention-days: 3
+          include-hidden-files: true
+
+  test-artifacts:
+    needs: build
+    strategy:
+      matrix:
+        include:
+          - os: macos-13
+            goos: darwin
+            goarch: amd64
+            go-version: "1.24.2"
+            go-mod-version: "1.24"
+          - os: macos-latest
+            goos: darwin
+            goarch: arm64
+            go-version: "1.24.2"
+            go-mod-version: "1.24"
+          - os: ubuntu-latest
+            goos: linux
+            goarch: amd64
+            go-version: "1.24.2"
+            go-mod-version: "1.24"
+          - os: ubuntu-24.04-arm
+            goos: linux
+            goarch: arm64
+            go-version: "1.24.2"
+            go-mod-version: "1.24"
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v5
+      - name: Install dependencies
+        uses: ./.github/actions/setup-deps
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: ${{ matrix.go-version }}
+      - name: Download Platform Artifact
+        uses: actions/download-artifact@v5
+        with:
+          name: llgo-${{ matrix.goos }}-${{ matrix.goarch }}
+          path: .
+
+      - name: Extract LLGO Archive
+        run: |
+          echo "Looking for ${{ matrix.goos }}_${{ matrix.goarch }} archive..."
+          ARCHIVE=$(ls *.tar.gz | head -n1)
+          mkdir -p release-llgo
+          tar -xzf "$ARCHIVE" -C release-llgo
+          ls -la release-llgo/
+          echo "${{ github.workspace }}/release-llgo/bin/" >> $GITHUB_PATH
+
+      - name: Test Hello World
+        uses: ./.github/actions/test-helloworld
+        with:
+          go-version: ${{matrix.go-version}}
+          mod-version: ${{ matrix.go-mod-version }}
+
+  release:
+    needs: [setup, build, test-artifacts]
+    runs-on: ubuntu-latest
+    if: startsWith(github.ref, 'refs/tags/')
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+      - name: Set up Release
+        uses: ./.github/actions/setup-goreleaser
+        with:
+          darwin-cache-key: ${{ needs.setup.outputs.darwin-cache-key }}
+          linux-cache-key: ${{ needs.setup.outputs.linux-cache-key }}
+      - name: Run GoReleaser (Release)
+        env:
+          GITHUB_TOKEN: ${{github.token}}
+        run: |
+          echo "Publishing release for tag: ${{ github.ref }}"
+          echo "All artifact tests passed, proceeding with release..."
           docker run \
             --rm \
             -e GITHUB_TOKEN=${GITHUB_TOKEN} \
diff --git a/.github/workflows/targets.yml b/.github/workflows/targets.yml
index c11c58e8..944a87b8 100644
--- a/.github/workflows/targets.yml
+++ b/.github/workflows/targets.yml
@@ -3,7 +3,9 @@ name: Targets
 
 on:
   push:
-    branches: ["**"]
+    branches: 
+      - "**"
+      - "!dependabot/**"
   pull_request:
     branches: ["**"]
 
diff --git a/cmd/internal/flags/flags.go b/cmd/internal/flags/flags.go
index c888b28c..0b27cf93 100644
--- a/cmd/internal/flags/flags.go
+++ b/cmd/internal/flags/flags.go
@@ -34,6 +34,7 @@ var AbiMode int
 var CheckLinkArgs bool
 var CheckLLFiles bool
 var GenLLFiles bool
+var ForceEspClang bool
 
 func AddCommonFlags(fs *flag.FlagSet) {
 	fs.BoolVar(&Verbose, "v", false, "Verbose output")
@@ -47,6 +48,7 @@ func AddBuildFlags(fs *flag.FlagSet) {
 		fs.BoolVar(&CheckLinkArgs, "check-linkargs", false, "check link args valid")
 		fs.BoolVar(&CheckLLFiles, "check-llfiles", false, "check .ll files valid")
 		fs.BoolVar(&GenLLFiles, "gen-llfiles", false, "generate .ll files for pkg export")
+		fs.BoolVar(&ForceEspClang, "force-espclang", false, "force to use esp-clang")
 	}
 }
 
@@ -95,5 +97,6 @@ func UpdateConfig(conf *build.Config) {
 		conf.CheckLinkArgs = CheckLinkArgs
 		conf.CheckLLFiles = CheckLLFiles
 		conf.GenLL = GenLLFiles
+		conf.ForceEspClang = ForceEspClang
 	}
 }
diff --git a/go.mod b/go.mod
index 03269ef9..1b81620d 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ toolchain go1.24.1
 
 require (
 	github.com/goplus/cobra v1.9.12 //gop:class
-	github.com/goplus/gogen v1.19.1
+	github.com/goplus/gogen v1.19.2
 	github.com/goplus/lib v0.3.0
 	github.com/goplus/llgo/runtime v0.0.0-00010101000000-000000000000
 	github.com/goplus/llvm v0.8.5
diff --git a/go.sum b/go.sum
index b3d12fd7..1cbaeea0 100644
--- a/go.sum
+++ b/go.sum
@@ -6,8 +6,8 @@ github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
 github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/goplus/cobra v1.9.12 h1:0F9EdEbeGyITGz+mqoHoJ5KpUw97p1CkxV74IexHw5s=
 github.com/goplus/cobra v1.9.12/go.mod h1:p4LhfNJDKEpiGjGiNn0crUXL5dUPA5DX2ztYpEJR34E=
-github.com/goplus/gogen v1.19.1 h1:L7jz60azeowj8zUq48tozETriTPBLqHb0nDj6PheANc=
-github.com/goplus/gogen v1.19.1/go.mod h1:owX2e1EyU5WD+Nm6oH2m/GXjLdlBYcwkLO4wN8HHXZI=
+github.com/goplus/gogen v1.19.2 h1:0WCfbMy9V2gGIUG4gnlhbFkLLuEwVuxOgkzjJjeGsP0=
+github.com/goplus/gogen v1.19.2/go.mod h1:owX2e1EyU5WD+Nm6oH2m/GXjLdlBYcwkLO4wN8HHXZI=
 github.com/goplus/lib v0.3.0 h1:y0ZGb5Q/RikW1oMMB4Di7XIZIpuzh/7mlrR8HNbxXCA=
 github.com/goplus/lib v0.3.0/go.mod h1:SgJv3oPqLLHCu0gcL46ejOP3x7/2ry2Jtxu7ta32kp0=
 github.com/goplus/llvm v0.8.5 h1:DUnFeYC3Rco622tBEKGg8xkigRAV2fh5ZIfBCt7gOSs=
diff --git a/internal/build/build.go b/internal/build/build.go
index b084e482..80777163 100644
--- a/internal/build/build.go
+++ b/internal/build/build.go
@@ -110,6 +110,7 @@ type Config struct {
 	GenLL         bool // generate pkg .ll files
 	CheckLLFiles  bool // check .ll files valid
 	CheckLinkArgs bool // check linkargs valid
+	ForceEspClang bool // force to use esp-clang
 	Tags          string
 	GlobalNames   map[string][]string // pkg => names
 	GlobalDatas   map[string]string   // pkg.name => data
@@ -192,7 +193,8 @@ func Do(args []string, conf *Config) ([]Package, error) {
 		conf.AppExt = defaultAppExt(conf)
 	}
 	// Handle crosscompile configuration first to set correct GOOS/GOARCH
-	export, err := crosscompile.Use(conf.Goos, conf.Goarch, IsWasiThreadsEnabled(), conf.Target)
+	forceEspClang := conf.ForceEspClang || conf.Target != ""
+	export, err := crosscompile.Use(conf.Goos, conf.Goarch, conf.Target, IsWasiThreadsEnabled(), forceEspClang)
 	if err != nil {
 		return nil, fmt.Errorf("failed to setup crosscompile: %w", err)
 	}
diff --git a/internal/crosscompile/crosscompile.go b/internal/crosscompile/crosscompile.go
index 48a5d9f5..fbd8962a 100644
--- a/internal/crosscompile/crosscompile.go
+++ b/internal/crosscompile/crosscompile.go
@@ -104,7 +104,7 @@ 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
@@ -114,6 +114,10 @@ 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 != "" {
@@ -192,52 +196,57 @@ func getOrCompileWithConfig(
 	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()
@@ -272,7 +281,9 @@ func use(goos, goarch string, wasiThreads bool) (export Export, err error) {
 				"--gc-sections",
 				"-lm",
 				"-latomic",
-				"-lpthread", // libpthread is built-in since glibc 2.34 (2021-08-01); we need to support earlier versions.
+				// libpthread & libdl is built-in since glibc 2.34 (2021-08-01); we need to support earlier versions.
+				"-lpthread",
+				"-ldl",
 			)
 		}
 		return
@@ -429,7 +440,7 @@ 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
 	}
@@ -634,9 +645,9 @@ 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 != "" && !strings.HasPrefix(targetName, "wasm") && !strings.HasPrefix(targetName, "wasi") {
 		return UseTarget(targetName)
 	}
-	return use(goos, goarch, wasiThreads)
+	return use(goos, goarch, wasiThreads, forceEspClang)
 }
diff --git a/internal/crosscompile/crosscompile_test.go b/internal/crosscompile/crosscompile_test.go
index b779dc6d..9856133c 100644
--- a/internal/crosscompile/crosscompile_test.go
+++ b/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:  true, // Changed: CFLAGS will contain include paths
-			expectLDFlags: true, // Changed: LDFLAGS will contain library paths
+			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
 		},
 		{
 			name:          "WASM Target",
@@ -76,7 +76,7 @@ func TestUseCrossCompileSDK(t *testing.T) {
 
 	for _, tc := range testCases {
 		t.Run(tc.name, func(t *testing.T) {
-			export, err := use(tc.goos, tc.goarch, false)
+			export, err := use(tc.goos, tc.goarch, false, false)
 
 			if err != nil {
 				t.Fatalf("Unexpected error: %v", err)
@@ -280,7 +280,7 @@ func TestUseTarget(t *testing.T) {
 
 func TestUseWithTarget(t *testing.T) {
 	// Test target-based configuration takes precedence
-	export, err := Use("linux", "amd64", false, "esp32")
+	export, err := Use("linux", "amd64", "esp32", false, true)
 	if err != nil {
 		t.Fatalf("Unexpected error: %v", err)
 	}
@@ -292,7 +292,7 @@ func TestUseWithTarget(t *testing.T) {
 	}
 
 	// Test fallback to goos/goarch when no target specified
-	export, err = Use(runtime.GOOS, runtime.GOARCH, false, "")
+	export, err = Use(runtime.GOOS, runtime.GOARCH, "", false, false)
 	if err != nil {
 		t.Fatalf("Unexpected error: %v", err)
 	}