import dvbgse error about gr-dvbgse

[drmpeg]

You have to install into the same directory you've installed GNU Radio. You can find that with gnuradio-config-info --prefix.

For example, if you installed with apt, then the prefix will be /usr. To install gr-dvbgse (or any other OOT), you would use cmake -DCMAKE_INSTALL_PREFIX=/usr ../ when you build.

If you installed from a GNU Radio PPA, then gnuradio-config-info --prefix may return /. That's a bug. The correct prefix is /usr.

[F4HSL-Yves]

Hello Ron, seems there is a path problem, the install put dvbgse and dvbs2rx in /usr/local/lib/python3/dist-packages/, but pythonpath does not contain this path, it contains /usr/local/lib/python3.8/dist-packages/, so i moved the two packages in this latter directory, and i don't get import not found any more.

But when i launch your graph (either dvbgse or dvbsrx) i get an error :

import dvbgse
File "/usr/local/lib/python3.8/dist-packages/dvbgse/init.py", line 18, in
from .dvbgse_python import *
ImportError: generic_type: type "bbheader_source" referenced unknown base type "gr::sync_block"

same for dvbsrx :

import dvbs2rx
File "/usr/local/lib/python3.8/dist-packages/dvbs2rx/init.py", line 22, in
from .dvbs2rx_python import *
ImportError: generic_type: type "bbdeheader_bb" referenced unknown base type "gr::block"

i tried to update pybind11-dev (as i have read on a forum) and rebuild but no success....

Thanks for help

[drmpeg]

Make sure your GNU Radio install is in /usr/local as I outlined above.

I believe it would have been better to just add to your PYTHONPATH.

export PYTHONPATH=$PYTHONPATH:/usr/local/lib/python3/dist-packages

The Python path thing is pretty messy. There's a patch pending to straighten it out, but I'm not sure that everyone agrees on it yet.

gnuradio/gnuradio#5148

[F4HSL-Yves]

OK, so to get clear i removed gnuradio with
sudo apt-get remove --auto-remove gnuradio
then i reinstalled gnu-radio with :
sudo apt-get update
sudo apt-get install gnuradio
then i rebuild with
cmake -DCMAKE_INSTALL_PREFIX=/usr ../
all seems installed in /usr/lib/python3/dist-packages
when i launch your graph, the module is found but still errors :

import dvbs2rx
File "/usr/local/lib/python3.8/dist-packages/dvbs2rx/init.py", line 22, in
from .dvbs2rx_python import *
ImportError: generic_type: type "bbdeheader_bb" referenced unknown base type "gr::block"

idem for dvbgse module

really difficult....
Thanks for help
Yves
Ps: my versions:
fresh installation Ubuntu 20.04.3 LTS
fresh installation (via apt install) gnuradio v3.10-compat-xxx-xunknown (Python 3.8.10)

[drmpeg]

You have to delete what's in /usr/local/lib/python3.8/dist-packages/.

You may want to clean out all GNU Radio related files in /usr/local for good measure.

[F4HSL-Yves]

Ok on, sorry to bother you, i have deleted the content of all dir in /user/local/lib
i have the same errors
Pybind11 problem ? Compilation problem ?
i am so eager to test your software !!
Thanks for help
Yves

[drmpeg]

What is the exact error you're getting now? If you deleted /usr/local/lib/python3.8/dist-packages/*, it can't be exactly the same.

[F4HSL-Yves]

Ok Ron : here is what i get in the gnu console when i start the graph :

Generating: '/home/yves/gr-dvbs2rx/apps/dvbs2_rx.py'

Executing: /usr/bin/python3 -u /home/yves/gr-dvbs2rx/apps/dvbs2_rx.py

Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/dvbs2rx/init.py", line 18, in
from .dvbs2rx_python import *
ImportError: generic_type: type "bbdeheader_bb" referenced unknown base type "gr::block"

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/yves/gr-dvbs2rx/apps/dvbs2_rx.py", line 40, in
import dvbs2rx
File "/usr/lib/python3/dist-packages/dvbs2rx/init.py", line 22, in
from .dvbs2rx_python import *
ImportError: generic_type: type "bbdeheader_bb" referenced unknown base type "gr::block"

Done (return code 1)

[drmpeg]

Looks to be a pybind11 issue. See https://www.mail-archive.com/[email protected]/msg73247.html

[F4HSL-Yves]

i have seen that post before, i have already done the apt update pybind-dev, and i have now the v2.4.3 on my system :

Lecture des listes de paquets... Fait
Construction de l'arbre des dépendances
Lecture des informations d'état... Fait
pybind11-dev est déjà la version la plus récente (2.4.3-2build2).
Calcul de la mise à jour... Fait
0 mis à jour, 0 nouvellement installés, 0 à enlever et 0 non mis à jour.

I did the build of your modules with that version. Is it the right one ?

Regards
Yves

[drmpeg]

I think you really need pybind11 v2.5.0. I don't see how apt upgrade pybind11-dev could work as suggested in the e-mail. When I do that, it just says pybind11-dev is already the newest version (2.4.3-2build2)..

It seems you'll have to build pybind11 from source.

sudo apt-get purge pybind11-dev

git clone https://github.com/pybind/pybind11.git

cd pybind11

git checkout v2.5.0 -b tmp

mkdir build

cd build

cmake -DCMAKE_BUILD_TYPE=Release -DPYBIND11_TEST=OFF ../

make

sudo make install

sudo ldconfig

[F4HSL-Yves]

Ok thanks Ron, I will try that. So after I have to rebuild your modules ? Should I delete the old ones or something else ?

[drmpeg]

You should clean the build directory of the projects before rebuilding them. For example:

cd gr-dvbgse/build

rm -rf *

Make sure you're in the correct directory before issuing rm -rf *!

You shouldn't have to worry about anything in /usr/lib. The new build will update those files.

[F4HSL-Yves]

Done, much better now :-) no more import errors ! now i need to understand how it works....Perhaps some further questions !
Thanks a lot Ron.
Best regards
Yves