Re: [Discuss-gnuradio] GNU 3.8 OOT module problem

[Vasil Velichkov]

Hi Mark,

On 21/10/2019 17.20, Mark Koenig wrote:
> Hello,
> 
> I have a number of OOT tree modules I am porting over to GNU 3.8, and all but 
> one module seem to be going well.  I am able to build and install all of the 
> modules without errors, but when I try to call one of them, I get the error 
> below.  I believe I have modified CMakeLists.txt properly.
> 
> could not find/open output driver: libwfcontrol_output_radiotap_pcap.so!
> /opt/truearrow/6.3/lib/libwfcontrol_output_pcap.so: undefined symbol: 
> _ZTI13output_driver
> thread[thread-per-block[10]: <block zz_wfcontrol_output_driver_spec_0(2)>]: 
> could not find driver
> 
> Does anyone have any suggestions on how to properly troubleshoot this 
> problem?  Or point me where to look to remedy the issue?  I have tried using 
> “c++filt”, but it only returns “typeinfo for output_driver”.

Most probably the output_driver class is missing implementation of one or more 
pure virtual functions or it's missing its virtual destructor. See all the 
answers of the following SO question - 
https://stackoverflow.com/questions/307352/g-undefined-reference-to-typeinfo

Regards,
Vasil