I have a question about setup LeGO-LOAM

edit

when building the source, running catkin_make produces the following error. what is the solution?

Ubuntu 18.04 Melodic https://jdh1005a.tistory.com/22

xaviernx@xaviernx-desktop:~/catkin_ws$ catkin_make
Base path: /home/xaviernx/catkin_ws
Source space: /home/xaviernx/catkin_ws/src
Build space: /home/xaviernx/catkin_ws/build
Devel space: /home/xaviernx/catkin_ws/devel
Install space: /home/xaviernx/catkin_ws/install
####
#### Running command: "cmake /home/xaviernx/catkin_ws/src -DCATKIN_DEVEL_PREFIX=/home/xaviernx/catkin_ws/devel -DCMAKE_INSTALL_PREFIX=/home/xaviernx/catkin_ws/install -G Unix Makefiles" in "/home/xaviernx/catkin_ws/build"
####
-- Using CATKIN_DEVEL_PREFIX: /home/xaviernx/catkin_ws/devel
-- Using CMAKE_PREFIX_PATH: /opt/ros/melodic
-- This workspace overlays: /opt/ros/melodic
-- Found PythonInterp: /usr/bin/python2 (found suitable version "2.7.17", minimum required is "2") 
-- Using PYTHON_EXECUTABLE: /usr/bin/python2
-- Using Debian Python package layout
-- Using empy: /usr/bin/empy
-- Using CATKIN_ENABLE_TESTING: ON
-- Call enable_testing()
-- Using CATKIN_TEST_RESULTS_DIR: /home/xaviernx/catkin_ws/build/test_results
-- Found gtest sources under '/usr/src/googletest': gtests will be built
-- Found gmock sources under '/usr/src/googletest': gmock will be built
-- Found PythonInterp: /usr/bin/python2 (found version "2.7.17") 
-- Using Python nosetests: /usr/bin/nosetests-2.7
-- catkin 0.7.29
-- BUILD_SHARED_LIBS is on
-- BUILD_SHARED_LIBS is on
-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-- ~~  traversing 9 packages in topological order:
-- ~~  - cloud_msgs
-- ~~  - velodyne (metapackage)
-- ~~  - velodyne_msgs
-- ~~  - loam_velodyne
-- ~~  - lego_loam
-- ~~  - velodyne_driver
-- ~~  - velodyne_laserscan
-- ~~  - velodyne_pcl
-- ~~  - velodyne_pointcloud
-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-- +++ processing catkin package: 'cloud_msgs'
-- ==> add_subdirectory(LeGO-LOAM/cloud_msgs)
-- Using these message generators: gencpp;geneus;genlisp;gennodejs;genpy
-- cloud_msgs: 1 messages, 0 services
-- +++ processing catkin metapackage: 'velodyne'
-- ==> add_subdirectory(velodyne/velodyne)
-- +++ processing catkin package: 'velodyne_msgs'
-- ==> add_subdirectory(velodyne/velodyne_msgs)
-- Using these message generators: gencpp;geneus;genlisp;gennodejs;genpy
-- velodyne_msgs: 2 messages, 0 services
-- +++ processing catkin package: 'loam_velodyne'
-- ==> add_subdirectory(loam_velodyne)
-- Using these message generators: gencpp;geneus;genlisp;gennodejs;genpy
-- Boost version: 1.65.1
-- Found the following Boost libraries:
--   system
--   filesystem
--   thread
--   date_time
--   iostreams
--   serialization
--   chrono
--   atomic
--   regex
-- Could NOT find ensenso (missing: ENSENSO_LIBRARY ENSENSO_INCLUDE_DIR) 
** WARNING ** io features related to ensenso will be disabled
-- Could NOT find DAVIDSDK (missing: DAVIDSDK_LIBRARY DAVIDSDK_INCLUDE_DIR) 
** WARNING ** io features related to davidSDK will be disabled
-- Could NOT find DSSDK (missing: _DSSDK_LIBRARIES) 
** WARNING ** io features related to dssdk will be disabled
** WARNING ** io features related to pcap will be disabled
** WARNING ** io features related to png will be disabled
-- The imported target "vtkRenderingPythonTkWidgets" references the file
   "/usr/lib/aarch64-linux-gnu/libvtkRenderingPythonTkWidgets.so"
but this file does not exist.  Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
   "/usr/lib/cmake/vtk-6.3/VTKTargets.cmake"
but not all the files it references.

-- The imported target "vtk" references the file
   "/usr/bin/vtk"
but this file does not exist.  Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
   "/usr/lib/cmake/vtk-6.3/VTKTargets.cmake"
but not all the files it references.

** WARNING ** io features related to libusb-1.0 will be disabled
-- Could NOT find ensenso (missing: ENSENSO_LIBRARY ENSENSO_INCLUDE_DIR) 
** WARNING ** visualization features related to ensenso ...