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

[raf raf]

Hi,

Thank you Batian for your feedback;

I try to install a new module  based on a blocks of ieeee 802.15.4 for gnuradio 3.7.

I followed your indications and the advise of Manu, I found after a modification a similar error with a message :

ImportError: /usr/local/lib/libgnuradio-ieee_868_915.so: undefined symbol: _ZN2gr12msg_accepter4postEN5boost13intrusive_ptrIN3pmt8pmt_baseEEES5_

After using c++filt I got :

gr::msg_accepter::post(boost::intrusive_ptr<pmt::pmt_base>, boost::intrusive_ptr<pmt::pmt_base>)

Please help me.

> From: address@hidden
> Date: Mon, 10 Feb 2014 21:13:39 +0100
> To: address@hidden
> CC: address@hidden
> Subject: Re: [Discuss-gnuradio] .so: undefined symbol: _ZN2gr6blocks12count_bits16E
>
> 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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> >
> >
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