Re: Cmake cannot find GNU Radio package

[Vasil Velichkov]

On 11/10/2021 14.26, Marcin Puchlik wrote:

> *So first command gives:* *dpkg - l | grep gnuradio*
> *ii  gnuradio                               3.8.1.0~rc1-2build2           
> amd64        GNU Radio Software Radio Toolkitii
>  gnuradio-dev:amd64                         3.8.1.0~rc1-2build2           
> amd64        GNU Software Defined Radio toolkit developmentii

Good.

>  libgnuradio-analog:amd64                   3.9.2.0-0~gnuradio~focal-3        
> amd64        gnuradio analog functionsii
>  libgnuradio-analog3.8.1:amd64              3.8.1.0-0~gnuradio~focal-6        
> amd64        gnuradio analog functionsii
>  libgnuradio-analog3.8.2:amd64              3.8.2.0-0~gnuradio~focal-2        
> amd64        gnuradio analog functionsii  libgnuradio-audio:amd64

>  libgnuradio-runtime:amd64                  3.9.2.0-0~gnuradio~focal-3        
>     amd64        gnuradio core runtimeii 
>  libgnuradio-runtime3.8.1:amd64             3.8.1.0-0~gnuradio~focal-6        
>     amd64        gnuradio core runtimeii  
>  libgnuradio-runtime3.8.2:amd64             3.8.2.0-0~gnuradio~focal-2        
>     amd64        gnuradio core runtimeii

This is not so good. You have multiple versions of the various gnuradio's 
libraries installed in parallel - 3.9.2.0, 3.8.1-0, 3.8.2.0. I'm not saying 
that this is the reason for the error you are seeing (as most probably it is 
not) but this could cause other hard to investigate problems. So my advice is 
to clean everything - uninstall every libgnuradio* package that you currently 
have and then install only gnuradio and gnuradio-dev packages.

> *second command: **sudo find / -name "gnuradio-runtime*.cmake"*
> /usr/lib/x86_64-linux-gnu/cmake/gnuradio/gnuradio-runtimeTargets-none.cmake
> /usr/lib/x86_64-linux-gnu/cmake/gnuradio/gnuradio-runtimeConfig.cmake
> /usr/lib/x86_64-linux-gnu/cmake/gnuradio/gnuradio-runtimeTargets.cmake

Looks good.

> *third command: **grep INTERFACE_INCLUDE_DIRECTORIES 
> /usr/lib/x86_64-linux-gnu/cmake/gnuradio/**

> /usr/lib/x86_64-linux-gnu/cmake/gnuradio/gnuradio-runtimeTargets.cmake:  
> INTERFACE_INCLUDE_DIRECTORIES /usr/include"

Here the output looks OK.

> /usr/lib/x86_64-linux-gnu/cmake/gnuradio/gnuradio-uhdTargets.cmake:  
> INTERFACE_INCLUDE_DIRECTORIES "${_IMPORT_PREFIX}/include"

but some of the other gnuradio-*.cmake files contain _IMPORT_PREFIX variable. 
Maybe in some cases this variable is empty and this result in the error you are 
observing. I'm not familiar at all with this part of the build system.

My advice is first to remove all gnuradio's packages, then reinstall and try on 
a clean system. If it still does not work then you will need to debug these 
cmake files. 

Regards,
Vasil