Is there any way to get kde to use qt version 4? I'd like to try qt4 and
see if there's any performance difference.

Right now, I've got qt-3.3.6-r4 and qt-4.2.2 installed. 'equery depends
qt-3.3.6-r4' comes back with kdelibs using it. 'equery depends qt-4.2.2'
comes back with nobody using it. If I uninstall qt-3.3.6-r4 and do a
'emerge -D kdelibs' then emerge wants to put qt-3.3.6 right back.

I've tried various combinations of the qt -qt3 and qt4 USE flags in my
/etc/make.conf but no combination will get kdelibs to work with qt4.

I had a peek at the ebuild file for kdelibs and all it specified is that the
minimum qt version is 3.3.3. Any idea why kdelibs won't work with qt4?

Why am I going to all this trouble? I figure having just one instalation of qt
will mean less library loading time and perhaps qt4 is an improvement over qt3.

AZ Nomad wrote:
> Is there any way to get kde to use qt version 4? I'd like to try qt4 and
> see if there's any performance difference.

Install KDE4 alpha/beta, but there aren't any ebuilds, so you have to do that
manually. Or just wait until KDE4 is released later this year, then you have
an official ebuild for it.

--

//Aho

On Tue, 13 Feb 2007 08:32:30 +0100, J.O. Aho <user@example.net> wrote:


>AZ Nomad wrote:
>> Is there any way to get kde to use qt version 4? I'd like to try qt4 and
>> see if there's any performance difference.

>Install KDE4 alpha/beta, but there aren't any ebuilds, so you have to do that
>manually. Or just wait until KDE4 is released later this year, then you have
>an official ebuild for it.

Sounds reasonable.

What is it that is preventing kde3.5 from using qt4?

AZ Nomad wrote:
> On Tue, 13 Feb 2007 08:32:30 +0100, J.O. Aho <user@example.net> wrote:
>
>
>> AZ Nomad wrote:
>>> Is there any way to get kde to use qt version 4? I'd like to try qt4 and
>>> see if there's any performance difference.
>
>> Install KDE4 alpha/beta, but there aren't any ebuilds, so you have to do that
>> manually. Or just wait until KDE4 is released later this year, then you have
>> an official ebuild for it.
>
> Sounds reasonable.
>
> What is it that is preventing kde3.5 from using qt4?

As qt4 has a wrapper, it's possible to build against, but I think the KDE
ebuilds are written to only use qt3 and anyway you do not gain any new
features to build KDE3 against qt4, maybe you get some instabilities, not sure
about that.

--

//Aho