All,
After installing the Windows 10 Subsystem for Linux (WSL) and Ubuntu 20.04, I created a flowgraph that relied on QT.
The example I followed to install WSL and GNU is: https://wiki.analog.com/resources/tools-software/linux-software/gnuradio
My Python version is 3.8.2 and my GRC version is 3.8.1.0
From the same terminal that I installed everthing, I finally launched GRC
gnuradio-companion
I built a flow graph and was greeted by an error when running it. The error I receiver after building the flow graph is:
Traceback (most recent call last):
File "/home/jameshayek/GNURadio-Projects/FMReceiver.py", line 38, in <module>
from gnuradio.qtgui import Range, RangeWidget
File "/usr/lib/python3/dist-packages/gnuradio/qtgui/__init__.py", line 36, in <module>
from .qtgui_swig import *
File "/usr/lib/python3/dist-packages/gnuradio/qtgui/qtgui_swig.py", line 13, in <module>
from . import _qtgui_swig
ImportError: libQt5Core.so.5: cannot open shared object file: No such file or directory
I'd like to note,during the install, I did include
sudo apt-get install qt5-default
After going back to the terminal, I tried to find libQt5Core
find /usr -name libQt5Core but nothing returned. I am unsure why...
I included gnuradio-dev as well as build-essential
I also set my PYTHONPATH by finding it first using:
find /usr -name gnuradio | grep "packages"
Which returned /usr/lib/python3/dist-packages/gnuradio
I then set the PYTHONPATH:
export PYTHONPATH=$PYTHONPATH:/usr/lib/python3/dist-packages/gnuradio
In the same terminal I was able to echo $PYTHONPATH to see:
:/usr/lib/python3/dist-packages/gnuradio
In a new terminal, the same command would yield nothing to return, so I modified the ~./bashrc file to include the path stated above. All new terminals now spew out /usr/lib/python3/dist-packages/gnuradio
Thinking this was an issue with the PATH I assumed the problem would have been resolved. So, after closing out GRC and all Ubuntu terminals, I relaunched a new terminal to call GRC.
Same error. Nothing I did helped.
Any advice?
Looks like WSL's issue #3023. Make sure you've libqt5core5a package installed on your system and then try applying the strip workaround as described in the issue.
sudo apt-get install libqt5core5a
sudo strip --remove-section=.note.ABI-tag /lib/x86_64-linux-gnu/libQt5Core.so.5
After going back to the terminal, I tried to find libQt5Core find /usr -name libQt5Core but nothing returned.
In order to find the file you need to either use a regex or specify the full filename.
$ find /usr -name "libQt5Core.so*"
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
$ find /usr -name libQt5Core.so.5
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5