[Development] Proposing CMake as build tool for Qt 6
bogdan.vatra at kdab.com
Thu Jun 6 15:44:00 CEST 2019
Multi-arch builds was the biggest win of QBS which supported them not only
for iOS but for Android and I think for any platform.
Again multi-arch builds are out for years but no cmake support :).
În ziua de joi, 6 iunie 2019, la 16:28:20 EEST, Alexandru Croitor a scris:
> There are 3rd party solutions for PCH in CMake, but we have not tested those
> Regarding iOS, I did some investigation work 2-ish months ago and here's
> what I can say:
> - CMake still has bugs here and there regarding iOS, but the patches I
> submitted so far to upstream CMake were merged. So I hope along the way we
> can iron out the issues before Qt 6 is released.
> - CMake has no proper support for doing multi-arch builds (simulator x64 +
> arm64 at the same time). We would either have to find a way to fix it
> upstream, possibly find some hack, or resort to building multiple types for
> different architectures, and then lipo-ing things together.
> Note that the current support for multi-arch builds in qmake I would call
> hack-ish, given that no other build tool that I know of, does the same
> things that qmake does.
> - We will have to figure out which 3rd party package provide we want to use
> for CI, for packages like PCRE2, Freetype, etc, because for all the ones i
> tried (Conan, vcpkg, hunter), all of them need custom patches to support
> iOS builds.
> Other than that, with some WIP non-merged patches in qtbase, I was able to
> build parts of qtbase with CMake, targeting armv8 iOS.
> So there's still some work to be done, but in principle it should be
> > On 6. Jun 2019, at 15:13, Bogdan Vatra via Development
> > <development at qt-project.org> wrote:
> > În ziua de joi, 6 iunie 2019, la 14:45:14 EEST, Simon Hausmann a scris:
> >> Hi,
> >> In the past months we, some developers from the Qt Company and KDAB,
> >> have made good progress on the port of Qt to use CMake as build tool.
> >> Since the initial prototype, the port has advanced very well and its
> >> current state can be summarized roughly like this:
> >> * Builds on
> >> * Windows (desktop)
> >> * macOS
> >> * Linux (desktop and embedded)
> >> * Android (running not tested yet)
> > Any news about iOS/tvOS/watchOS and PCH?
> > Cheers,
> > BogDan.
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