mjcpy.so returns error when run "python python/gps/gps_main.py mjc_example"

[HoRaengII]

Hi, I need a help to run the mujoco example of your GPS, I can run box2d related examples, but stuck at the mujoco ones.

the error is:

ImportError: /home/baek/gps/build/lib/mjcpy.so: undefined symbol: _ZN3osg8Geometry16setTexCoordArrayEjPNS_5ArrayE

I followed exactly what's said at the https://github.com/cbfinn/gps site. it looks like the OSG_LIBRARIES is somehow wrong. In two of the OSG_LIBRARIES,

/usr/lib/x86_64-linux-gnu/libosg.so; /usr/lib/x86_64-linux-gnu/libosgViewer.so;

I found

_ZN3osg8Geometry16setTexCoordArrayEjPNS_5ArrayENS1_7BindingE

by the command

objdump -tT /usr/lib/x86_64-linux-gnu/libosg.so |grep _ZN3osg8Geometry16setTexCoordArrayEjPNS_5ArrayE

which looks similar to the missing symbol above, but the last "NS1_7BindingE" part is additionally there.

How should I resolve this issue? Any help, please?

[cbfinn]

What version of mujoco are you using?

[HoRaengII]

Thank you for response! it's mujoco131. Is it mujoco version problem?

[pwieler]

Hi, I encountered the same issue. Did you find out what the problem was and how to fix it?

[pwieler]

I could solve the problem in the meantime. The solution that worked for me: I use mujoco131 (since newer versions are not compatible with python2.7) and removed all my existing openscenegraph dependencies. Then i build openscenegraph-3.0.1 from source following the instructions from: https://github.com/openscenegraph/OpenSceneGraph/tree/OpenSceneGraph-3.0.1