El dijous, 18 de desembre del 2025, a les 11:11:29 (Hora estàndard d’Europa central), Neal Gompa va escriure: > On Mon, Dec 15, 2025 at 3:40 AM Albert Astals Cid <[email protected]> wrote: > > I would like to propose this minimum cmake version policy for KDE > > Frameworks.> > > The required minimum cmake version for KDE Frameworks will be the maximum of: > > * The required cmake version of required Qt at that time > > * The cmake version released 1 year before the required Qt at that time > > > > Let's do the calculations for now. > > > > required Qt at the time = 6.8 > > required cmake version of Qt 6.8 = 3.16 > > Qt 6.8 release date = 8 October 2024 > > 1 year before Qt 6.8 relase date = 8 October 2023 > > > > cmake 3.27.0 release date = 18 July 2023 > > cmake 3.28.0 release date = 6 December 2023 > > > > cmake version released 1 year before the required Qt at that time = 3.27 > > > > So this policy would suggest to increase our minimum cmake requirement to > > max(3.27, 3.16) -> 3.27 > > > > This ties updating the minimum cmake version to when we update Qt which i > > think makes sense, if we are going to as people to update Qt, we may as > > well ask them to update cmake (which is in my opinion much easier) > > > > I know it is quite a jump in minimum required cmake version but i think > > having a policy is much simpler than having to justify every time we want > > to do an update. > > > > What do you all think? > > I think it's reasonably sensible. > > However, I'm going to ask for the caveat that we don't go up to > requiring CMake 4.x for the time being.
Requiring CMake 4.x will only happen as per the rules when we depend on a Qt 6 released later than March 28 2026 (possibly Qt 6.11 if the schedule does not slip), which means it will not happen until Qt 6.13 is released, which more than a year away. Hopefully all the cmake 4 woes will be solved by then? Cheers, Albert > Updating to CMake 4.x has > been a struggle for many distributions and it's only just now starting > to trickle in. Fedora isn't going to have it until Fedora 44[1], for > example. CentOS Stream 10 doesn't have it either (and won't ever > because it deliberately broke backward compatibility). KDE projects > themselves aren't affected usually (thank you for being good at > this!), but non-KDE projects frequently have issues for a variety of > reasons. It's going to take some time to get everything to adapt. > > So that means that the highest possible version (for now) would be CMake > 3.31. > > [1]: https://fedoraproject.org/wiki/Changes/CMake4.0 > > > -- > 真実はいつも一つ！/ Always, there's only one truth!
