ending phonon on qt4

[Harald Sitter]

And so it was.

Please note that master of phonon now is qt5-only and you also need
master of the backends. older backends no longer build against master
because of aggressive clean up of legacy crap in the cmake logic.


On Mon, Jul 1, 2019 at 11:51 AM Harald Sitter <sitter at kde.org> wrote:
>
> Ahoi!
>
> I am thinking of following D22164 with the complete removal of the Qt4
> support in phonon. Qt4 doesn't really need extra work which is why I
> opted to not remove it yet, but it does incur a heavy cost on the
> readability (and by extension quality) of our cmake code.
>
> So, using this diff as an excuse I think we could just throw Qt4 out.
> Thoughts?
>
> https://phabricator.kde.org/D22164
>
> HS