CMake Warning at /opt/ros/melodic/share/catkin/cmake/catkin_package.cmake:166 (message):
  catkin_package() DEPENDS on 'system_lib' but neither
  'system_lib_INCLUDE_DIRS' nor 'system_lib_LIBRARIES' is defined.
Call Stack (most recent call first):
  /opt/ros/melodic/share/catkin/cmake/catkin_package.cmake:102 (_catkin_package)
  CMakeLists.txt:40 (catkin_package)


CMake Warning at /opt/ros/melodic/share/catkin/cmake/catkin_package.cmake:166 (message):
  catkin_package() DEPENDS on 'libavcodec' but neither
  'libavcodec_INCLUDE_DIRS' nor 'libavcodec_LIBRARIES' is defined.
Call Stack (most recent call first):
  /opt/ros/melodic/share/catkin/cmake/catkin_package.cmake:102 (_catkin_package)
  CMakeLists.txt:40 (catkin_package)


CMake Warning at /opt/ros/melodic/share/catkin/cmake/catkin_package.cmake:166 (message):
  catkin_package() DEPENDS on 'libavformat' but neither
  'libavformat_INCLUDE_DIRS' nor 'libavformat_LIBRARIES' is defined.
Call Stack (most recent call first):
  /opt/ros/melodic/share/catkin/cmake/catkin_package.cmake:102 (_catkin_package)
  CMakeLists.txt:40 (catkin_package)


CMake Warning at /opt/ros/melodic/share/catkin/cmake/catkin_package.cmake:166 (message):
  catkin_package() DEPENDS on 'libswscale' but neither
  'libswscale_INCLUDE_DIRS' nor 'libswscale_LIBRARIES' is defined.
Call Stack (most recent call first):
  /opt/ros/melodic/share/catkin/cmake/catkin_package.cmake:102 (_catkin_package)
  CMakeLists.txt:40 (catkin_package)