Of course as soon as I hit send I finally noticed that qt >= 5.14 is listed in the dependencies so that resolves my key question about a workaround.
Disregard unless anyone knows the best way to handle Qt version for 20.04. I'm planning to ask on the qt forum. On Mon, Jun 19, 2023 at 2:30 PM Hugh Kelley <hghk...@gmail.com> wrote: > 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 > > -- Hugh Kelley
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