Re: [Discuss-gnuradio] undefined symbol with gr-uhd block

[Josh Blum]

Well, the symbol is brought into swig here (at the bottom) 
http://gnuradio.org/cgit/gnuradio.git/tree/gr-uhd/swig/uhd_swig.i?h=next&id=d74eacddbb8875479fef1d9ca75f36fca78df792#n117

Maybe the libuhd.so is not in your library path, or ldconfig, or just 
rebuilt the source to be sure. -Josh

On 11/22/2010 07:32 AM, Alonso Asier wrote:
>   Hi all!
>
> I'm trying to use the uhd driver in the grc environment with the gr-uhd blocks 
> (more exactly the single USRP source) but in runtime I receive the following 
> error:
>
> Traceback (most recent call last):
>    File "/home/sdrproject/gnuradio/gnuradio-examples/grc/top_block.py", line 16, 
> in<module>
>      import uhd_swig
>    File "/usr/local/lib/python2.6/dist-packages/uhd_swig/__init__.py", line 25, 
> in<module>
>      from uhd_swig_swig import *
>    File "/usr/local/lib/python2.6/dist-packages/uhd_swig/uhd_swig_swig.py", line 24, 
> in<module>
>      _uhd_swig_swig = swig_import_helper()
>    File "/usr/local/lib/python2.6/dist-packages/uhd_swig/uhd_swig_swig.py", 
> line 20, in swig_import_helper
>      _mod = imp.load_module('_uhd_swig_swig', fp, pathname, description)
> ImportError: /usr/local/lib/libgnuradio-uhd_swig-3.3.0.so.0: undefined symbol: 
> _ZN3uhd4usrp10multi_usrp9ALL_GAINSE

My files names look like this (interesting?):

ls /usr/local/lib/libgnuradio-uhd*
/usr/local/lib/libgnuradio-uhd-3.4git.so.0
/usr/local/lib/libgnuradio-uhd-3.4git.so.0.0.0
/usr/local/lib/libgnuradio-uhd.la
/usr/local/lib/libgnuradio-uhd.so
/usr/local/lib/libgnuradio-uhd.so.0
/usr/local/lib/libgnuradio-uhd.so.0.0.0



> does anyone has some clue?
>
>
> Un saludo / Best Regards
>
> Asier Alonso Muñoz
>
> Investigador / Researcher
> TECNALIA-Telecom
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