ros2 run turtlesim symbol lookup error

asked 2021-06-23 04:38:42 -0500

michaelk
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updated 2021-06-29 07:19:40 -0500

gvdhoorn
86574 ●283 ●1432 ●1054 http://cor.tudelft.nl/

Hi folks,

I'm new to ROS and followed the guideline up to starting turtlesim. Now I get the follwoing error:

[turtlesim]: Starting turtlesim with node name /turtlesim
/opt/ros/galactic/lib/turtlesim/turtlesim_node: symbol lookup error: /opt/ros/galactic/lib/librcl_logging_spdlog.so: undefined symbol: _ZN6spdlog7details7log_msgC1ENS_10source_locEN3fmt2v617basic_string_viewIcEENS_5level10level_enumES6_

I use ROS2 galactic on a Ubuntu 20.04 installation.

Thanks in advance.

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The error is thrown when a module can't find a module function to call. Have you installed Galactic via multiple methods perhaps? Can you try re-installing Galactic?

trunc8 ( 2021-06-29 06:20:21 -0500 )edit

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answered 2021-09-08 23:38:24 -0500

YuanQZH
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This is caused by broken .so file. I use pre-compiled package as well. After install nav2 using apt and source setup.bash, I got similar error output. This is because

$  locate librcl_logging_spdlog.so
/home/user/ros2_galactic/ros2-linux/lib/librcl_logging_spdlog.so
/opt/ros/galactic/lib/librcl_logging_spdlog.so

Just copy the ros2_galactic/ros2-linux/lib/librcl_logging_spdlog.so to /opt/ros/galactic/lib/ , the problem solved.

The difference is:

ls librcl_logging_spdlog.so* -l
-rw-r--r-- 1 root root 482632 Sep  5 20:53 librcl_logging_spdlog.so
-rw-r--r-- 1 root root  35352 Jul  1 06:15 librcl_logging_spdlog.so.bak

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answered 2021-06-29 07:07:05 -0500

michaelk
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I used the pre-comiled package. The problem persisted over uninstalling and reinstalling with Debian package. After installation by compiling on the machine, the problem disappeared.

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This is not really a proper solution.

Packages released through the ROS 2 buildfarm and installed using apt should not result in symbol lookup errors.

Building packages from source should really only be done if absolutely necessary.

I'd suggest you open an issue on the ros2/rcl_logging issue tracker. Please post a comment here with a link to your issue to keep things connected.

Please also refer to your ROS Answers question in your post on the issue tracker.

gvdhoorn ( 2021-06-29 07:19:26 -0500 )edit

It is probable that the error is specific to OP's system; the environment may have been polluted from an incomplete uninstallation. I tested the same command on ROS2 Galactic and Ubuntu 20.04 on my system, and it ran without errors.

trunc8 ( 2021-06-29 08:33:46 -0500 )edit

It was the first installation after setting up the system which failed.

michaelk ( 2021-06-29 08:41:43 -0500 )edit

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It is probable that the error is specific to OP's system; the environment may have been polluted from an incomplete uninstallation.

that could be, but if the state of a user' system is capable of completely breaking a package, that should at least be documented I feel. Especially if the "only thing" users do is run a simple installation command and then follow a tutorial.

Even if it turns out to be a problem with deployment, it'd be good to figure out the cause, as that could help avoid it in the future.

gvdhoorn ( 2021-06-29 09:31:25 -0500 )edit

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ros2 run turtlesim symbol lookup error

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