[Development] Switching Qt default builds to C++20 where supported

[Vladimir Minenko]

Hi Thiago,

I would not take the silence as a sign of consent. I rather have the impression that there is no sufficient interest in this at the moment. Despite this, there are quite a few urgent improvements required on the CI. I greatly doubt it will be possible to have additional configurations for any of the permutations of conditions you might need.

--
Vladimir Minenko
vladimir.minenko at qt.io
+49 171 90 61 461

Product Lead for Qt Foundations, mobile and desktop platforms
The Qt Company GmbH - https://qt.io

On 18. Oct 2024, at 17:36, Thiago Macieira <thiago.macieira at intel.com> wrote:

On Monday 14 October 2024 10:31:22 GMT-7 Thiago Macieira wrote:
On Monday 14 October 2024 09:53:56 GMT-7 Thiago Macieira wrote:
The last time we discussed this was at QtCS24
(https://wiki.qt.io/QtCS2024_C%2B%2B20), where IIRC the conclusion was
that
ATM, there is no reason to switch to C++20. So, it is definitely not in
6.9.

That was "not require C++20 for users". I'm not asking for that. I am
asking that we switch how we build Qt. Users won't be affected.

And no platforms will be dropped, no new compilers will be required. That
was Phase I½ in the QtCS link above.

What's the drawback with this?

I'm going to assume that silence is consent to "there is no drawback" and will
proceed with the implementation.

--
Thiago Macieira - thiago.macieira (AT) intel.com
 Principal Engineer - Intel DCAI Platform & System Engineering
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