The symbol [GzPluginHook] is missing Error.

[MayurRabadiya]

Hii,
I want to use this ROS2_control plugin with my custom created drone model. I am using PX4-Autopilot SITL for the simulation in gazebo garden. The PX4-SITL is working fine. But When I add gz_ros2_control-system plugin to sdf file, it gives this error.

file:///home/mayur/Pictures/Screenshots/Screenshot%20from%202024-06-03%2016-53-33.png

I have built gz_ros2_contol package in separate workspace and my PX4-Autopilot is in a separate workspace.
I added the Path for the plugin file like this:
export GZ_SIM_SYSTEM_PLUGIN_PATH="/home/mayur/gz_ros2_control_ws/build/gz_ros2_control:$GZ_SIM_SYSTEM_PLUGIN_PATH"
But still, it gives this error. How can I use this plugin with my PX4-SITL?

Thank you & kind regards,
Mayur

[christophfroehlich]

Can you please copy the full log up to the error, instead of trying to post a screenshot? thx.

[MayurRabadiya]

Thank you very much for the reply @christophfroehlich.
I am so sorry, screenshot doesn't appear.
Here, is fll log.

`Warning: Ignoring XDG_SESSION_TYPE=wayland on Gnome. Use QT_QPA_PLATFORM=wayland to run on Wayland anyway.
Library [/home/mayur/gz_ros2_control_ws/build/gz_ros2_control/libgz_ros2_control-system.so] does not export any plugins. The symbol [GzPluginHook] is missing, or it is not externally visible.
[Err] [SystemLoader.cc:141] Failed to load system plugin: (Reason: No plugins detected in library)

• Requested plugin name: [gz_ros2_control::GazeboSimROS2ControlPlugin]
• Requested library name: [gz_ros2_control-system]
• Resolved library path: [/home/mayur/gz_ros2_control_ws/build/gz_ros2_control/libgz_ros2_control-system.so]
  INFO [lockstep_scheduler] setting initial absolute time to 8000 us
  INFO [commander] LED: open /dev/led0 failed (22)
  INFO [tone_alarm] home set
  INFO [uxrce_dds_client] init UDP agent IP:127.0.0.1, port:8888
  `

[MayurRabadiya]

Before exporting the path the error was:

`Warning: Ignoring XDG_SESSION_TYPE=wayland on Gnome. Use QT_QPA_PLATFORM=wayland to run on Wayland anyway.
[Err] [SystemLoader.cc:119] Failed to load system plugin: (Reason: Could not find shared library)

• Requested plugin name: [gz_ros2_control::GazeboSimROS2ControlPlugin]
• Requested library name: [gz_ros2_control-system]
• Library search paths:
  • /home/mayur/.gz/sim/plugins/
  • /usr/lib/x86_64-linux-gnu/gz-sim-7/plugins/
  • /home/mayur/.ignition/gazebo/plugins/
    INFO [lockstep_scheduler] setting initial absolute time to 8000 us
    INFO [commander] LED: open /dev/led0 failed (22)
    INFO [uxrce_dds_client] init UDP agent IP:127.0.0.1, port:8888
    INFO [mavlink] mode: Normal, data rate: 4000000 B/s on udp port 18570 `

The plugin is working perfectly fine with the gz_ros2_control_demo models in same workspace.