Thanks for reporting it, William. I'll continue the conversation on
answers.ros.
Enrico
2015-01-13 20:16 GMT+01:00 William Woodall <
william@osrfoundation.org>:
> There is a answers.ros.org question for this now (or there already was):
>
>
> http://answers.ros.org/question/200885/could-not-load-library-after-latest-ros-updates/
>
> Either way, Enrico please use answers.ros.org for this type of question
> in the future. If it then turns out to be systemic then you can escalate it
> to the issue trackers.
>
> Please have a look at our Support guidelines: http://wiki.ros.org/Support
>
> Thanks,
>
> On Tue, Jan 13, 2015 at 5:08 AM, Enrico Corvaglia <enrico988@gmail.com>
> wrote:
>
>> Thanks Mike,
>> but I've already tried your solution. By the way, reading the error
>> carefully I noticed that the path of the library is parsed as
>> */home/enrico/catkin_ws/devel/lib//libkuka_controllers.so*
>> The problem seems to lie in the double // after lib, maybe after a change
>> in the catkin package source code. Unfortunately I didn't succeed to solve
>> this issue yet.
>>
>>
>>
>> 2015-01-13 13:31 GMT+01:00 Mike Purvis <mpurvis@clearpathrobotics.com>:
>>
>>> That does look like an ABI problem. Did you definitely sudo apt-get
>>> dist-upgrade, and then rebuild your workspace (eg, rm -rf build devel;
>>> catkin_make; source devel/setup.bash)?
>>>
>>> (This type of question is best for ROS Answers, I think...)
>>>
>>> On 13 January 2015 at 06:28, Enrico Corvaglia <enrico988@gmail.com>
>>> wrote:
>>>
>>>> Hello to all the community.
>>>> I'm writing this since I'm encountering errors when I launch my custom
>>>> controllers written for a KUKA LWR arm, used in combination with Gazebo
>>>> simulator. The error comes when I run the roslaunch command which loads
>>>> such controllers.
>>>>
>>>> *[ERROR] [1421148091.366974261, 5.814000000]: Could not load class
>>>> kuka_controllers/BacksteppingController: Failed to load library
>>>> /home/enrico/catkin_ws/devel/lib//libkuka_controllers.so. Make sure that
>>>> you are calling the PLUGINLIB_EXPORT_CLASS macro in the library code, and
>>>> that names are consistent between this macro and your XML. Error string:
>>>> Could not load library (Poco exception =
>>>> /home/enrico/catkin_ws/devel/lib//libkuka_controllers.so: undefined symbol:
>>>> _ZN26forward_command_controller24ForwardCommandControllerIN18hardware_interface20EffortJointInterfaceEE8startingERKN3ros4TimeE)*
>>>> *[ERROR] [1421148091.367239553, 5.814000000]: Could not load controller
>>>> 'BacksteppingController' because controller type
>>>> 'kuka_controllers/BacksteppingController' does not exist.*
>>>> *[ERROR] [1421148091.367296142, 5.814000000]: Use 'rosservice call
>>>> controller_manager/list_controller_types' to get the available types*
>>>>
>>>> The weird thing is that running the command suggested by ROS
>>>> (rosservice call [...]) it actually returns all my controllers names. This
>>>> error has been introduced after the last ROS software updates and before
>>>> that it was working just fine. Also I have a call to PLUGINLIB_EXPORT_CLASS
>>>> in my source, so it is not that the problem.
>>>>
>>>> As a note, the ROS built-in position controllers work, so it seems like
>>>> a linking or a parsing error.
>>>>
>>>> Thanks in advance,
>>>> Enrico C.
>>>>
>>>> _______________________________________________
>>>> ros-users mailing list
>>>> ros-users@lists.ros.org
>>>> http://lists.ros.org/mailman/listinfo/ros-users
>>>>
>>>>
>>>
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>>>
>>
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>
>
> --
> William Woodall
> ROS Development Team
> william@osrfoundation.org
> http://wjwwood.io/
>
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