[LAU] [OT] qt4/qt5 on same system ?

[Rui Nuno Capela]

On 03/25/2015 01:02 PM, Dave Phillips wrote:
> Greetings,
>
> Is anyone here successfully running a parallel installation of Qt4 and
> Qt5 ? I want to install the latest SuperCollider3 which now requires
> Qt5. I'm on Fedora 19 with Planet CCRMA extensions, it's been happy with
> Qt4, but now I need to consider installing Qt5. The question: Can I go
> ahead and install Qt5 in parallel with the existing Qt4 ? If there are
> known problems with Linux audio software perhaps someone is already
> aware of them and can warn me before I take action.
>
> I'm particularly wary of this kind of thing. I recently hosed an entire
> system during a routine installation of components from the F19 repos -
> yes, in certain circumstances Fedora will quietly let you destroy your
> system without warning - and I'd like to avoid a repeat of that scenario.
>

afaik

qt4 and 5 co-existence is a non-issue whatsoever.

it only gets to be a showstopper when dealing with plugins: the host 
*and* the plugin must be linked to the same qt framework level.

add to that, on the very specific niche of lv2 gui realm, (lib)suil 
won't work for qt5 uis--it's rigged for qt4/x11 and only.

besides those specific issues, you can have qt5, qt4 and oldish qt3 
runtime and development environments on the same system image with no 
obvious problem at all.

hth.
cheers
-- 
rncbc aka. Rui Nuno Capela