Error executing example flowgraphs - libgnuradio-tempest.so.1.0.0:cannot open shared object file

[Hammie5150]

I have installed and compiled gr-tempest without errors. When I try to run any of the example flowgraphs, I get:

File "/usr/local/lib/python3.10/dist-packages/gnuradio/tempest/init.py", line 18, in
from .tempest_python import *
ImportError: libgnuradio-tempest.so.1.0.0: cannot open shared object file: No such file or directory

I cannot find any reference to this error or this library. Stock GNU flowgraphs run without issue. Any help is appreciated.

[git-artes]

Hi. You probably forgot to execute
$ sudo ldconfig
in your terminal.

[Hammie5150]

Thanks for the reply. That command did not resolve the issue.

[git-artes]

Mmmm... Other questions: Is libgnuradio-tempest.so.1.0.0 anywhere on your system? Did you "$sudo make install"?

[Hammie5150]

Yes, libgnuradio-tempest.so.1.0.0 is on the system under /etc/lib/. Yes, I did the make install after the build per the build/installation instructions.

[git-artes]

That's not the typical place for the shared libraries to be located at, maybe that's the problem. In my system it is located at /usr/local/lib/x86_64-linux-gnu/.

Maybe you could edit /etc/ld.so.conf so that it includes /etc/lib/?

[ravenspired]

Hello,
I am having this issue as well. I am stumped as to what might be causing it. When I execute ldconfig, it moves the tempest python module into a folder called gnuradio which means that I get the "module not found error" when importing the library. /usr/local/lib/x86_64-linux-gnu/ does contain libgnuradio-tempest.so.1.0.0
I created a docker file that essentially illustrates all the steps that are done when installing gr-tempest.

Here is the Dockerfile:

FROM ubuntu:22.04
LABEL maintainer="Federico 'Larroca' La rocca - flarroca@fing.edu.uy"
LABEL editor="ravenspired"

ENV DEBIAN_FRONTEND=noninteractive

RUN apt-get update

RUN apt-get install -y gir1.2-gtk-3.0

RUN apt-get install -y software-properties-common

RUN apt-get update && apt-get install -y wget gnupg2

RUN apt-get install -y sudo
RUN useradd --create-home --shell /bin/bash -G sudo gnuradio
RUN echo 'gnuradio:gnuradio' | chpasswd

RUN mkdir /home/gnuradio/persistent && chown gnuradio /home/gnuradio/persistent

RUN apt-get update

RUN apt-get install -y gnuradio

RUN apt-get install -y gnuradio-dev cmake git libboost-all-dev libcppunit-dev liblog4cpp5-dev python3-pygccxml pybind11-dev liborc-dev python3-pip libgsl-dev libsndfile1-dev

RUN apt-get install -y vim

RUN pip install packaging

WORKDIR /persistent
RUN git config --global http.sslverify "false"
RUN git clone https://github.com/git-artes/gr-tempest.git
WORKDIR /persistent/gr-tempest

RUN gr_modtool bind Hsync
RUN gr_modtool bind fft_peak_fine_sampling_sync
RUN gr_modtool bind fine_sampling_synchronization
RUN gr_modtool bind frame_drop
RUN gr_modtool bind framing
RUN gr_modtool bind infer_screen_resolution
RUN gr_modtool bind normalize_flow
RUN gr_modtool bind sampling_synchronization
RUN gr_modtool bind ssamp_correction
RUN gr_modtool bind sync_detector

RUN cmake .
RUN make
RUN make install

USER gnuradio

WORKDIR /home/gnuradio

ENV PYTHONPATH "${PYTHONPATH}:/usr/local/lib/python3/dist-packages"

CMD bash

Do you have any idea on what I could be missing? Ive tried installing on both virtual machines, docker, and actual hardware and have not been able to get past this problem on any platforms.

[ravenspired]

Sorry I forgot to add system info, I'm using Ubuntu 22, GNURadio 3.10.1.1, Python 3.10.12. I took the docker image on https://github.com/git-artes/docker-gnuradio and tried modifying it to install gr-tempest.

[Hammie5150]

Ok, I finally had time to get back to this.

I updated /etc/ld.so.conf to include the directory for shared libraries, which for me was /usr/local/lib/. I inserted the string 'include=/usr/local/lib', but now it throws:

ModuleNotFoundError: No module named ‘tempest’