[Development] Qt 6 buildsystem support requirements

[Lars Knoll]

On 2 Aug 2018, at 00:27, Thiago Macieira <thiago.macieira at intel.com<mailto:thiago.macieira at intel.com>> wrote:

On Wednesday, 1 August 2018 13:14:32 PDT Sérgio Martins wrote:
On Sat, Jul 21, 2018 at 3:35 AM, Thiago Macieira

<thiago.macieira at intel.com<mailto:thiago.macieira at intel.com>> wrote:
Hello

Having spent far too much time trying to figure out why crappy
buildsystems
cause failures in distros (like TensorFlow or libvpx - see
https://plus.google.com/+ThiagoMacieira/posts/DqTKdRGfuwR ), I'd like to
make sure this doesn't happen to Qt 6. For that, I'd like to add the
following extra requirements to the buildsystem we choose to use. This is
in addition to the functionality requirements.

These apply to the buildsystem at the time of Qt's the switch to it.

Will the switch coincide with 6.0 ? If yes, does it have to or could
the switch happen at Qt > 6.0.0 whenever we have a *good* solution ?

The plan was to switch for 6.0. It could happen later if we don't get
consensus and is too disruptive earlier, though. But 6.0 is the perfect time,
as we drop old platforms and can reliably require people to upgrade to new
things.

Yes, 6.0 is the time I’d like to move away from qmake for building Qt. It’s a time when we do larger changes anyway, so this fits in. I don’t really see us doing such a switch for a minor release anymore, because I think such a change is difficult to make happen without compromising the 6 months release cycle.

Cheers,
Lars

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