IF(QT_FOUND)
  ADD_SUBDIRECTORY(camera-calibration)
  IF(OpenCV_FOUND)
	ADD_SUBDIRECTORY(camera-calibration-planar)
  ENDIF()
  ADD_SUBDIRECTORY(create-marker)
  ADD_SUBDIRECTORY(create-marker-grid-svg)
  ADD_SUBDIRECTORY(marker-detection)
ENDIF()