diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 07b1b761..57edb507 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -422,6 +422,22 @@ list(APPEND SOURCES
     inputpanel/QskVirtualKeyboard.cpp
 )
 
+list(APPEND HEADERS
+    controls/LevelingSensor/QsgNodeUtility.h
+    controls/LevelingSensor/QskLevelingSensor.h
+    controls/LevelingSensor/QskLevelingSensorNodes.h
+    controls/LevelingSensor/QskLevelingSensorSkinlet.h
+    controls/LevelingSensor/QskLevelingSensorUtility.h
+)
+
+list(APPEND SOURCES
+    controls/LevelingSensor/QsgNodeUtility.cpp
+    controls/LevelingSensor/QskLevelingSensor.cpp
+    controls/LevelingSensor/QskLevelingSensorNodes.cpp
+    controls/LevelingSensor/QskLevelingSensorSkinlet.cpp
+    controls/LevelingSensor/QskLevelingSensorUtility.cpp
+)
+
 if(ENABLE_PINYIN)
     list(APPEND HEADERS inputpanel/QskPinyinTextPredictor.h)
     list(APPEND SOURCES inputpanel/QskPinyinTextPredictor.cpp)
@@ -485,3 +501,6 @@ set_target_properties(${target} PROPERTIES
     VERSION ${CMAKE_PROJECT_VERSION} SOVERSION ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR} )
 
 install(TARGETS ${target} )
+
+enable_testing()
+add_subdirectory(tests)
\ No newline at end of file
diff --git a/src/controls/LevelingSensor/QskLevelingSensor.h b/src/controls/LevelingSensor/QskLevelingSensor.h
index 63b02ddd..f077dfb2 100644
--- a/src/controls/LevelingSensor/QskLevelingSensor.h
+++ b/src/controls/LevelingSensor/QskLevelingSensor.h
@@ -16,7 +16,7 @@
 ///   /
 ///  /
 /// v z+
-class LevelingSensor : public QskControl
+class QSK_EXPORT LevelingSensor : public QskControl
 {
     Q_OBJECT
         using Inherited = QskControl;
@@ -40,7 +40,7 @@ public Q_SLOTS:
     void setTickmarksLabels(Qt::Axis axis, TickmarksLabels labels);
     void setAngle(const QVector3D& degree);
     void setAngle(Qt::Axis axis, float degree);
-signals:
+Q_SIGNALS:
     void rotationXChanged(qreal degree);
     void rotationYChanged(qreal degree);
     void rotationZChanged(qreal degree);
diff --git a/src/controls/LevelingSensor/QskLevelingSensorSkinlet.h b/src/controls/LevelingSensor/QskLevelingSensorSkinlet.h
index 6be5b9fc..5b2db976 100644
--- a/src/controls/LevelingSensor/QskLevelingSensorSkinlet.h
+++ b/src/controls/LevelingSensor/QskLevelingSensorSkinlet.h
@@ -5,7 +5,7 @@
 
 class LevelingSensor;
 
-class LevelingSensorSkinlet : public QskSkinlet
+class QSK_EXPORT LevelingSensorSkinlet : public QskSkinlet
 {
     Q_GADGET