Could not find the required component ‘tf2_geometry_msgs‘. The following CMake error indicates that_ros2 the passed package name 'tf2_geometry_msgs' w

 Could NOT find tf2_geometry_msgs(missing: tf2_geometry_msgs_DIR)
-- Could not find the required component 'tf2_geometry_msgs'. 
The following CMake error indicates that you either need to 
install the package with the same name or change your environment so that it can be found.

CMake Error at /opt/ros/kinetic/share/catkin/cmake/catkinConfig.cmake:83 (find_package):
  Could not find a package configuration file provided by
  "tf2_geometry_msgs" with any of the following names:

    tf2_geometry_msgsConfig.cmake
    tf2_geometry_msgs-config.cmake

  Add the installation prefix of "tf2_geometry_msgs" to CMAKE_PREFIX_PATH or
  set "tf2_geometry_msgs_DIR" to a directory containing one of the above
  files.  If "tf2_geometry_msgs" provides a separate development package or
  SDK, be sure it has been installed.
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sudo apt install ros-melodic-tf2-geometry-msgs
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ps:如果是ros的其他版本，只需要将melodic换成你的版本即可，然后将后面替换成你缺少的包名，注意要把包名中的 _ 换成 -才可以。这句我全网只找到一篇，还是外网的一个问答。