IF(${ENABLE_GUI})
  INCLUDE(${QT_USE_FILE})
  INCLUDE_DIRECTORIES(${QGLVIEWER_INCLUDE_DIR})
  
  SET(_GLViewer_MOC_HEADERS qt4/GLViewer.hpp;qt4/OpenGLManager.hpp)
  SET(_GLViewer_SOURCE_FILES qt4/GLViewer.cpp;qt4/_GLViewer.cpp;qt4/OpenGLManager.cpp;qt4/GLViewerDisplay.cpp;qt4/GLViewerMouse.cpp)
  
  QT4_WRAP_CPP(_GLViewer_MOC_OUTFILES ${_GLViewer_MOC_HEADERS})
  
  ADD_LIBRARY(_GLViewer SHARED ${_GLViewer_SOURCE_FILES} ${_GLViewer_MOC_OUTFILES})
  SET_TARGET_PROPERTIES(_GLViewer PROPERTIES PREFIX "")
  TARGET_LINK_LIBRARIES(_GLViewer ${GLUT_LIBRARY} ${OPENGL_LIBRARY} ${QT_LIBRARIES} ${QGLVIEWER_LIBRARIES} ${Boost_LIBRARIES} ${PYTHON_LIBRARIES})
  IF(GL2PS_FOUND AND ENABLE_GL2PS)
    TARGET_LINK_LIBRARIES(_GLViewer ${GL2PS_LIBRARIES})
  ENDIF(GL2PS_FOUND AND ENABLE_GL2PS)
  INSTALL(TARGETS _GLViewer DESTINATION ${YADE_PY_PATH}/yade/qt)
  
  FILE(GLOB filesPYQT "${CMAKE_CURRENT_SOURCE_DIR}/qt4/*.py")
  INSTALL(FILES ${filesPYQT} DESTINATION ${YADE_PY_PATH}/yade/qt)
  
  EXECUTE_PROCESS(
        COMMAND "pyrcc4" "-o" "${CMAKE_BINARY_DIR}/img_rc.py" "img.qrc"
        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/qt4
        RESULT_VARIABLE rv
        )
  
  EXECUTE_PROCESS(
        COMMAND "pyuic4" "-o" "${CMAKE_BINARY_DIR}/ui_controller.py" "controller.ui"
        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/qt4
        RESULT_VARIABLE rv
        )
  INSTALL(FILES ${CMAKE_BINARY_DIR}/img_rc.py ${CMAKE_BINARY_DIR}/ui_controller.py  DESTINATION ${YADE_PY_PATH}/yade/qt)
  
ENDIF(${ENABLE_GUI})
