[QGIS-Developer] qgis ubuntu 20.04 dependencies

[Even Rouault]

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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