[Qt-creator] Requiring Qt 6 for building Qt Creator 9 and later

[Eike Ziller]

> On 4 Jul 2022, at 11:17, Eike Ziller <Eike.Ziller at qt.io> wrote:
> 
> Hi all,
> 
> we would like to require Qt 6.2 or later for building Qt Creator itself going forward in master branch, which is Qt Creator 9 and later.
> 
> We’ll have released 3 versions of Qt Creator based on Qt 6 then (starting with Qt Creator 6) by then, Qt 6 has matured and has its first LTS version with Qt 6.2. It starts to happen that fixes are done in Qt 6 that are no longer backported to Qt 5, and removing support for Qt 5 will allow us to remove hacks and glue code that enabled us to compile against both Qt 5 and Qt 6.
> 
> This by extension means that the required compilers increase to GCC 9 and MSVC 2019 (from GCC 7 and MSVC 2017).
> And the supported platforms increase to Ubuntu 20.04, RHEL/CentOS 8, and macOS 10.14,

and Windows 10

> which they already are for our prebuilt binary packages, since these are already Qt 6 based.
> 
> The corresponding patch is on Gerrit for comments: https://codereview.qt-project.org/c/qt-creator/qt-creator/+/420047
> 
> The Qt versions that we support for developing your own applications with, are of course not affected by this change.
> 
> Br, Eike
> 
> -- 
> Eike Ziller
> Principal Software Engineer
> 
> The Qt Company GmbH
> Erich-Thilo-Straße 10
> D-12489 Berlin
> eike.ziller at qt.io
> http://qt.io
> Geschäftsführer: Mika Pälsi,
> Juha Varelius, Jouni Lintunen
> Sitz der Gesellschaft: Berlin, Registergericht: Amtsgericht Charlottenburg, HRB 144331 B
> 
> 
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-- 
Eike Ziller
Principal Software Engineer

The Qt Company GmbH
Erich-Thilo-Straße 10
D-12489 Berlin
eike.ziller at qt.io
http://qt.io
Geschäftsführer: Mika Pälsi,
Juha Varelius, Jouni Lintunen
Sitz der Gesellschaft: Berlin, Registergericht: Amtsgericht Charlottenburg, HRB 144331 B