Proposal to Update Minimum CMake Version to 3.22

[Ingo Klöcker]

On Sonntag, 30. März 2025 14:13:23 Mitteleuropäische Sommerzeit Ömer Fadıl 
USTA wrote:
> I hope this message finds you well. I would like to propose an update to
> the minimum required version of CMake for KDE Frameworks and KDE Plasma
> projects, raising it from 3.16 to 3.22.
> 
> The primary reason for this change is that there are currently no
> distributions that still utilize CMake 3.16. While this transition may be
> considered late for KDE 6.4, it is essential for KDE 6.5. Our existing
> Continuous Integration (CI) systems are already using versions of CMake
> that are newer than 3.16, meaning we do not perform checks for CMake 3.16
> compu7yyyatibility.

For what it's worth: Our AppImage CD image (based on SLES 15 SP5) currently 
provides cmake-3.20.4-150400.4.6.1.x86_64.

I have no idea what version of cmake SLES 15 SP6 provides. In either case it 
means someone would need to update the image to SLES 15 SP6 (if this version 
provides cmake 3.22+) or someone needs to ensure we compile cmake ourselves 
for the image (which is probably fairly easy for the AppImage CD image since 
it uses Craft).

Regards,
Ingo
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