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Vasil Velichkov vvvelichkov at gmail.comHi Thangaraj,
On 21/10/2021 15.09, Thangaraj Mukara Dhakshinamoorthy wrote:
> Guest OS: VirtualBox Ubuntu 20.04.3 LTS
> GNU Radio version: 3.9
How did you install gnuradio - from source or from the ppa repository? And how did you install gr-fcdproplus?
> /usr/local/include/gnuradio/hier_block2.h:93:35: note: no known conversion for argument 1 from 'gr::fcdproplus::fcdproplus::sptr' {aka 'boost::shared_ptr<gr::fcdproplus::fcdproplus>'} to 'gr::basic_block_sptr' {aka 'std::shared_ptr<gr::basic_block>'}
> 93 | void connect(basic_block_sptr src, int src_port, basic_block_sptr dst, int dst_port);
One possible reason is two incompatible gnuradio versions installed on your system in different locations - `/usr/` and `/usr/local/`. Make sure to remove all other gnuradio versions and that there is no `/usr/include/gnuradio` directory. Then delete the build directory and start from scratch.
Another possible reason is the version of gr-fcdproplus that you have installed is not compatible with your gnuradio version.
> I just need the RTL-SDR component
You can try removing gr-fcdproplus as it is not needed for RTL-SDR devices.
Regards,
Vasil