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Why does the wiki claim that ROS packages using gazebo must be catkin packages?

The wiki claims that ROS packages depending on gazebo have to be catkin (wet) packages, and not rosbuild (dry) packages.

http://gazebosim.org/wiki/Tutorials/1.9/Overview_of_new_ROS_integration#Catkin

But if you're using the "standalone" gazebo APIs you can just access whatever you need using cmake either way. If you're using APIs from any of the ROS catkin (wet) packages in the gazebo_ros_packages metapackage you can still depend on those packages from a rosbuild (dry) package (dry can depend on wet, it's wet that can't depend on dry).

Is this an error, or am I missing something?