I want to build QGIS from source so it uses the latest GDAL which I've built
from source.
I have been able to get QGIS to build on Kubuntu 25.10. The problems I have run
into are on startup with the Python console.
Building with Qt5, I get "qgis._gui cannot import type '����' from
PyQt5.QtCore". One possibility is that the build is using the wrong sip version
as it seems to find sip-build. My understanding is that sip-build is for Qt6
while sip is for Qt5, but even setting the cmake flag in the cmake UI to use
sip instead of sip-build, it seems to keep using sip-build regardless. More
here: https://github.com/qgis/QGIS/issues/63834
Building with Qt6 by setting the appropriate flag in the cmake UI, I get a QGIS
Qt6 build startup failure in qgsfeature "No module named 'PyQt5'" I don't know
why it is trying to use Qt5 in a Qt6 build. More here:
https://github.com/qgis/QGIS/issues/63847
Please can anyone help.
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