Building recent QGIS versions on 20.04 is going to be quite a lot of
pain since you'll need indeed to have a qt 5.15 build, and all the other
auxiliary QT based dependencies build against it.
I'd suggest you update to 22.04 at least. Or if you don't want to do
development but can live with released versions, try conda-forge builds
(cf https://plugins.qgis.org/planet/tag/conda/)
Le 19/06/2023 à 20:30, Hugh Kelley via QGIS-Developer a écrit :
Hi all,
while working on compiling qgis on ubuntu using these instructions [0]
, i've run into an error while running cmake that "QRecursiveMutex" is
not found.
It looks like that became available in QT 5.14.
Ubuntu 20.04 installs QT 5.12. During my searches i've seen comments
that imply 5.15 might not be available for 20.04. I'm trying to figure
out whether I should be trying to upgrade Qt, if I have to upgrade
Ubuntu, or if there is some option in the compilation process that can
resolve this for me.
I've installed Qt 5.15.2 to /opt/ and added it to PATH, but qtdiag
still indicates i'm using 5.12.x
I thought i'd start by asking here before asking on a Qt general forum
in case there's a qgis specific solution.
I've also set the cmake 3d option to "no" which got me around the
absence of q qt 3d extras pacakge/file. So maybe there's a similar
solution for this although this version problem seem more essential.
Thanks for any suggestions!
[0] https://github.com/qgis/QGIS/blob/master/INSTALL.md
--
Hugh Kelley
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