[ENHANCEMENT] Qt6 support

[bgermann]

In May, Qt5 support without payed subsription ends.
Is there a chance to port Bibletime to Qt6 and if so, are there any blockers?

[gholmlund]

I don't believe anyone has tried Qt 6 yet. I doubt there are any blockers.
I think we would only change the master branch so it could be part of a 3.1 release
We could try to be compatible with both Qt 6.4 and 5.15 as long as it does not add much complexity.

I could work on it unless you want to @jaakristioja

[jaakristioja]

You can, but I don't think this is urgent. Most Linux distributions don't even package Qt6 right now. Because many packages still require Qt5, distributions will most likely continue to provide Qt5 support for at least a few more years. Afaik even KDE is only halfway ported to Qt6.

[jaakristioja]

As of 30a38d7 I got a BibleTime built against Qt 6.5.3 to start up without crashing. But there is a huge amount of Qt5 -> Qt6 porting work still to be done.

[jaakristioja]

As of 6c26004 I've removed in builds against Qt6 all uses of Qt functions marked as deprecated in Qt 6.5 and older.

[jaakristioja]

As of ad8506b building BibleTime against Qt6 no longer depends on the Core5Compat module.