关于ROS 工作空间catkin_make的一些问题

进行catkin_make要在工作空间的root目录下

错误（1）: Could not find a package configuration file provided by "ardrone_autonomy"

CMake Error at /opt/ros/kinetic/share/catkin/cmake/catkinConfig.cmake:83 (find_package):

  Could not find a package configuration file provided by "ardrone_autonomy"

  with any of the following names:

    ardrone_autonomyConfig.cmake

    ardrone_autonomy-config.cmake

解决办法：~/catkin_ws$ sudo apt-get install ros-kinetic-ardrone-autonomy

错误（2）：fatal error: ignition/math/Inertial.hh: 没有那个文件或目录

/usr/include/gazebo-7/gazebo/msgs/msgs.hh:24:37: fatal error: ignition/math/Inertial.hh: 没有那个文件或目录

原因：升级gazebo后缺少依赖库

解决：~/catkin_ws$ sudo apt-get install libignition-math2-dev

错误（3）：ModuleNotFoundError: No module named 'em'

Traceback (most recent call last):

  File "/opt/ros/kinetic/share/gencpp/cmake/../../../lib/gencpp/gen_cpp.py", line 41, in <module>

    import genmsg.template_tools

  File "/opt/ros/kinetic/lib/python2.7/dist-packages/genmsg/template_tools.py", line 39, in <module>

    import em

ModuleNotFoundError: No module named 'em'

解决：~/catkin_ws$ Python -m pip install empy