make px4_sitl_default gazebo

[jkxdl]

我运行make px4_sitl_default gazebo出现了以下错误：

CMake Error at CMakeLists.txt:32 (find_package):
By not providing "Findgazebo.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "gazebo", but
CMake did not find one.

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

gazeboConfig.cmake
gazebo-config.cmake

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