diff --git a/code/client/tunnel/vnc/worker/event.go b/code/client/tunnel/vnc/worker/event.go
index d038e0d..14ed9fc 100644
--- a/code/client/tunnel/vnc/worker/event.go
+++ b/code/client/tunnel/vnc/worker/event.go
@@ -1,48 +1,11 @@
+// +build !vnc
+
 package worker
 
-import (
-	"natpass/code/client/tunnel/vnc/vncnetwork"
-
-	"github.com/go-vgo/robotgo"
-	"github.com/lwch/logging"
-)
+import "natpass/code/client/tunnel/vnc/vncnetwork"
 
 func runMouse(data *vncnetwork.MouseData) {
-	detach, err := attachDesktop()
-	if err != nil {
-		logging.Error("attach desktop: %v", err)
-		return
-	}
-	defer detach()
-	robotgo.MoveMouse(int(data.GetX()), int(data.GetY()))
-	var key string
-	switch data.GetBtn() {
-	case vncnetwork.MouseData_left:
-		key = "left"
-	case vncnetwork.MouseData_right:
-		key = "right"
-	case vncnetwork.MouseData_middle:
-		key = "center"
-	}
-	switch data.GetType() {
-	case vncnetwork.Status_down:
-		robotgo.MouseToggle("down", key)
-	case vncnetwork.Status_up:
-		robotgo.MouseToggle("up", key)
-	}
 }
 
 func runKeyboard(data *vncnetwork.KeyboardData) {
-	detach, err := attachDesktop()
-	if err != nil {
-		logging.Error("attach desktop: %v", err)
-		return
-	}
-	defer detach()
-	switch data.Type {
-	case vncnetwork.Status_down:
-		robotgo.KeyToggle(data.Key, "down")
-	case vncnetwork.Status_up:
-		robotgo.KeyToggle(data.Key, "up")
-	}
 }
diff --git a/code/client/tunnel/vnc/worker/event_auto.go b/code/client/tunnel/vnc/worker/event_auto.go
new file mode 100644
index 0000000..8fceefa
--- /dev/null
+++ b/code/client/tunnel/vnc/worker/event_auto.go
@@ -0,0 +1,50 @@
+// +build vnc
+
+package worker
+
+import (
+	"natpass/code/client/tunnel/vnc/vncnetwork"
+
+	"github.com/go-vgo/robotgo"
+	"github.com/lwch/logging"
+)
+
+func runMouse(data *vncnetwork.MouseData) {
+	detach, err := attachDesktop()
+	if err != nil {
+		logging.Error("attach desktop: %v", err)
+		return
+	}
+	defer detach()
+	robotgo.MoveMouse(int(data.GetX()), int(data.GetY()))
+	var key string
+	switch data.GetBtn() {
+	case vncnetwork.MouseData_left:
+		key = "left"
+	case vncnetwork.MouseData_right:
+		key = "right"
+	case vncnetwork.MouseData_middle:
+		key = "center"
+	}
+	switch data.GetType() {
+	case vncnetwork.Status_down:
+		robotgo.MouseToggle("down", key)
+	case vncnetwork.Status_up:
+		robotgo.MouseToggle("up", key)
+	}
+}
+
+func runKeyboard(data *vncnetwork.KeyboardData) {
+	detach, err := attachDesktop()
+	if err != nil {
+		logging.Error("attach desktop: %v", err)
+		return
+	}
+	defer detach()
+	switch data.Type {
+	case vncnetwork.Status_down:
+		robotgo.KeyToggle(data.Key, "down")
+	case vncnetwork.Status_up:
+		robotgo.KeyToggle(data.Key, "up")
+	}
+}
diff --git a/contrib/build/build b/contrib/build/build
index 97e1c11..5e8c289 100755
--- a/contrib/build/build
+++ b/contrib/build/build
@@ -25,4 +25,4 @@ go run contrib/bindata/main.go -pkg dashboard -o code/client/dashboard/assets.go
 go build -ldflags "$LDFLAGS" -o bin/np-svr code/server/*.go
 # CC=x86_64-w64-mingw32-gcc \
 # CXX=x86_64-w64-mingw32-g++ \
-go build -ldflags "$LDFLAGS" -o bin/np-cli code/client/*.go
\ No newline at end of file
+go build -ldflags "$LDFLAGS" -tags "$TAGS" -o bin/np-cli code/client/*.go
\ No newline at end of file
diff --git a/contrib/build/build_all.go b/contrib/build/build_all.go
index d4ee747..c0af3c6 100644
--- a/contrib/build/build_all.go
+++ b/contrib/build/build_all.go
@@ -150,6 +150,13 @@ func build(t target) {
 	err = copyFile("CHANGELOG.md", path.Join(buildDir, "CHANGELOG.md"))
 	runtime.Assert(err)
 
+	logging.Info("go env...")
+	cmd := exec.Command("go", "env")
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	cmd.Env = os.Environ()
+	runtime.Assert(cmd.Run())
+
 	ldflags := "-X 'main.gitHash=" + gitHash() + "' " +
 		"-X 'main.gitReversion=" + gitReversion() + "' " +
 		"-X 'main.buildTime=" + buildTime() + "' " +
@@ -157,7 +164,7 @@ func build(t target) {
 		"--extldflags '-static -fpic -lssp'"
 
 	logging.Info("build server...")
-	cmd := exec.Command("go", "build", "-o", path.Join(buildDir, "np-svr"+t.ext),
+	cmd = exec.Command("go", "build", "-o", path.Join(buildDir, "np-svr"+t.ext),
 		"-ldflags", ldflags,
 		path.Join("code", "server", "main.go"))
 	cmd.Stdout = os.Stdout
@@ -168,7 +175,7 @@ func build(t target) {
 		fmt.Sprintf("GOARCH=%s", t.arch))
 	runtime.Assert(cmd.Run())
 
-	logging.Info("build client...")
+	logging.Info("build client(no vnc)...")
 	cmd = exec.Command("go", "build", "-o", path.Join(buildDir, "np-cli"+t.ext),
 		"-ldflags", ldflags,
 		path.Join("code", "client", "main.go"),
@@ -176,7 +183,21 @@ func build(t target) {
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr
 	cmd.Env = append(os.Environ(),
-		"CGO_ENABLED=0",
+		fmt.Sprintf("GOOS=%s", t.os),
+		fmt.Sprintf("GOARCH=%s", t.arch),
+		fmt.Sprintf("CC=%s", t.cc),
+		fmt.Sprintf("CXX=%s", t.cxx))
+	runtime.Assert(cmd.Run())
+
+	logging.Info("build client(vnc)...")
+	cmd = exec.Command("go", "build", "-o", path.Join(buildDir, "np-cli"+".vnc"+t.ext),
+		"-ldflags", ldflags,
+		"-tags", "vnc",
+		path.Join("code", "client", "main.go"),
+		path.Join("code", "client", "connect.go"))
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	cmd.Env = append(os.Environ(),
 		fmt.Sprintf("GOOS=%s", t.os),
 		fmt.Sprintf("GOARCH=%s", t.arch),
 		fmt.Sprintf("CC=%s", t.cc),