Fix build on macOS

trackpoint-app/CMakeLists.txt

@@ -73,6 +73,7 @@ QT_ADD_EXECUTABLE(TrackpointApp
 if(NOT BUILD_STATIC_RELEASE)
   INCLUDE_DIRECTORIES(
     ${${OPENSCENEGRAPH_PREFIX}_SOURCE_DIR}/include
+    ${${OPENSCENEGRAPH_PREFIX}_BINARY_DIR}/include
     ${${LIB3MF_PREFIX}_BINARY_DIR}/Autogenerated/Bindings/Cpp
   )