Re: ImportError

[Vasil Velichkov]

Hi Mario,

On 01/11/2021 03.46, Mario Moran wrote:
> Since I installed it with pybombs, I used the command "$ cmake
> -DCMAKE_INSTALL_PREFIX=~/prefix-3.8 ../ # should be the configured PyBOMBS
> target" and I used it in the build directory. 

On 01/11/2021 03.01, Mario Moran wrote:
> The Gnuradio Companion I am running is Gnu Radio Companion 3.8.4.0 and I
> installed it using Pybombs.

You have two gnuradio versions installed on your system - the first one 
installed using pybombs (in /home/mariom/prefix-3.8/).

> libgnuradio-runtime.so.3.8.3 => 
> /lib/x86_64-linux-gnu/libgnuradio-runtime.so.3.8.3 (0x00007fb4a6bd4000)
> libgnuradio-pmt.so.3.8.3 => /lib/x86_64-linux-gnu/libgnuradio-pmt.so.3.8.3 
> (0x00007fb4a6b68000)

And a second one (in /lib/ and /usr/lib) most probably installed from the 
Ubuntu's repository. The `ldd -r ...` commands shows that the tutorial's OOT 
module has been build for the system wide installation (in /lib/) but you have 
installed it in the pybombs' prefix by specifying -DCMAKE_INSTALL_PREFIX.

Having two versions of gnuradio installed at the same time (especially if one 
is in /lib/ or /usr/lib/) is not recommended unless you are very experienced as 
you can easily mix the two and have some very difficult to debug problems. My 
recommendation is to choose one version and remove the other. 

> I believe I installed it there, but im not fully
> confident in it. Is there a way to check that 

You can use 

    find /home/mario -name libgnuradio-tutorial.so.1.0.0git
    find /usr/ -name libgnuradio-tutorial.so.1.0.0git

to check/find where the library has been installed. 

> im not sure if that is
> the LD_LIBRARY_PATH. I'm very new to this, I've been learning all of this
> from stretch.

In you prefix (/home/mariom/prefix-3.8/) there is a shell script called 
setup_env.sh. It exports some environment variables that are needed by python 
and library loader to find python modules and libraries in your prefix. In can 
either load this script manually

  source /home/mariom/prefix-3.8/setup_env.sh

or open a new bash/shell session using pybombs

   pybombs run bash

You can also source this file in ~/.profile to load it automatically.

Regards,
Vasil