message: CMake: see
diff: @@ -34,7 +34,7 @@ find_package(fiducial_msgs)
  # find_package(Boost REQUIRED COMPONENTS system)
  find_package(RTABMap 0.20.18 REQUIRED)
  -find_package(OpenCV REQUIRED)
  +find_package(OpenCV REQUIRED QUIET COMPONENTS core calib3d imgproc highgui stitching optflow photo OPTIONAL_COMPONENTS aruco xfeatures2d nonfree gpu cudafeatures2d)
  IF(RTABMAP_GUI)
  FIND_PACKAGE(PCL 1.7 REQUIRED QUIET COMPONENTS common io kdtree search surface filters registration sample_consensus segmentation visualization)
  