CMake Error at CMakeLists.txt:20 (find_package):
  By not providing "Findnav2_costmap_2d.cmake" in CMAKE_MODULE_PATH this
  project has asked CMake to find a package configuration file provided by
  "nav2_costmap_2d", but CMake did not find one.

  Could not find a package configuration file provided by "nav2_costmap_2d"
  with any of the following names:

    nav2_costmap_2dConfig.cmake
    nav2_costmap_2d-config.cmake

  Add the installation prefix of "nav2_costmap_2d" to CMAKE_PREFIX_PATH or
  set "nav2_costmap_2d_DIR" to a directory containing one of the above files.
  If "nav2_costmap_2d" provides a separate development package or SDK, be
  sure it has been installed.


gmake: *** [Makefile:620：cmake_check_build_system] 错误 1