Failed to load system plugin [gz_ros2_control-system]

[Luczia]

Hi,

I have the following error when launching ros2 launch gz_ros2_control_demos diff_drive_example.launch.py :

[ign gazebo-1] Library [/colcon_ws/install/gz_ros2_control/lib/libgz_ros2_control-system.so] does not export any plugins. The symbol [IgnitionPluginHook] is missing, or it is not externally visible.
[ign gazebo-1] [Err] [SystemLoader.cc:87] Failed to load system plugin [gz_ros2_control-system] : couldn't load library on path [/colcon_ws/install/gz_ros2_control/lib/libgz_ros2_control-system.so].

OS Version: WSL with Ubuntu 22.4
Using Docker image : Ubuntu 22.04 + ROS2 Humble + Gazebo Garden (installed from debs)

Behavior :

Gazebo (ex Ignition) launches successfully but with that error message. As such, many controllers and topics are missing and I can't control the robot.

I am also suprised that in the roslaunch console, the node is still called "ign gazebo".

Steps to reproduce :

• Clone the repo https://github.com/ros-controls/gz_ros2_control.git and checkout to branch ign_to_gz
• colcon build in a ROS2 workspace

I've tried to change different plugin_names and file_names in the urdf but without success. Any idea ? I see that the branch ign_to_gz has been updated a few hours ago but with the same behavior.

Thanks !

I attach the Dockerfile for reproduction
Dockerfile.humble-full-gz.txt

[ahcorde]

Please check these two answer #67 (comment) and #67 (comment)

For following issues or PR, please don't use images, these are not searchable.

If this solve your problem please close this issue.

[Luczia]

Ok, I've rebuilt my humble image and recompiled ros_gz on the humble branch and it now works.

Thanks !