Re: [Discuss-gnuradio] .so: undefined symbol: _ZN2gr6blocks12count_bits16E

[Bastian Bloessl]

Hi Aditya,

just in case the problem still exists, you might miss something like this in 
your cmake files

https://github.com/bastibl/gr-ieee802-15-4/commit/a586256ad5e3fe1cf8c998a68a7276adf6e2d691

Best,
Bastian


On 10 Feb 2014, at 19:40, Aditya Dhananjay <address@hidden> wrote:

> You could also try "sudo ldconfig". It looks like the linker can't find some 
> required symbols.
> 
> Happy hacking!
> 
> 
> On Mon, Feb 10, 2014 at 12:59 PM, Nick Foster <address@hidden> wrote:
> Usually a "make clean" will solve this.
> 
> --n
> 
> 
> On Mon, Feb 10, 2014 at 9:57 AM, raf raf <address@hidden> wrote:
> Hi all gnuradio users,
> 
> I have an error when I try to execute a python script after adding a new 
> block. 
> 
> My block is add to a gnuradio 3.7 with gr_modtool with a command : 
> 
> 
> 
> gr_modtool add -t sync packet_sink
> 
> The module containing a blocks is ieee_868_915. The error is  :
> 
> Traceback (most recent call last):
>   File "./qa_symbols_to_chips_bs.py", line 25, in <module>
>     import ieee_868_915
>   File "/usr/local/lib/python2.7/dist-packages/ieee_868_915/__init__.py", 
> line 45, in <module>
>     from ieee_868_915_swig import *
>   File 
> "/usr/local/lib/python2.7/dist-packages/ieee_868_915/ieee_868_915_swig.py", 
> line 26, in <module>
>     _ieee_868_915_swig = swig_import_helper()
>   File 
> "/usr/local/lib/python2.7/dist-packages/ieee_868_915/ieee_868_915_swig.py", 
> line 22, in swig_import_helper
>     _mod = imp.load_module('_ieee_868_915_swig', fp, pathname, description)
> ImportError: /usr/local/lib/libgnuradio-ieee_868_915.so: undefined symbol: 
> _ZN2gr6blocks12count_bits16Ej
> 
> 
> I tried to delete a lib file libgnuradio-ieee_868_915.so and reinstall all a 
> block, but it didn't give a result. 
> 
> 
> Please help me to fix this error.
> 
> Thank you.
> 
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