[Development] xcb-icccm dependency in Qt 5/libxcb

[Koehne Kai]

Hi,

This is just a heads up that https://codereview.qt-project.org/#change,38451 has finally landed in qtbase/master. You can now pass -qt-xcb to configure to minimize the dependencies to various xcb-* system libraries: I added the source code for these to src/3rdparty/xcb, and using the switch will statically compile them into the xcb plugin. With -qt-xcb, the only xcb dependencies left should be to libxcb.so.1 and maybe libxcb-xlib.so. 

Regards

Kai

> -----Original Message-----
> From: development-bounces+kai.koehne=digia.com at qt-project.org
> [mailto:development-bounces+kai.koehne=digia.com at qt-project.org] On
> Behalf Of Thiago Macieira
> Sent: Friday, October 26, 2012 4:45 PM
> To: development at qt-project.org
> Subject: Re: [Development] xcb-icccm dependency in Qt 5/libxcb
> 
> On sexta-feira, 26 de outubro de 2012 13.29.29, Koehne Kai wrote:
> > So, in summary linking statically against system libxcb-* does only
> > work on Ubuntu 32 bit so far, which obviously doesn't cut it. We could
> > try to import xcb into src/3rdparty, and compile from there , but it's
> > unclear to me whether mixing different versions of the libxcb
> > libraries (which invariably will happen at runtime, because e.g. QtGui
> > links against libX11, which links against libxcb ...) is in any way
> > supported. So I'm not sure how to continue. I registered on the xcb
> > mailing list and posted there too in the hope that they have advice:
> >
> > http://lists.freedesktop.org/archives/xcb/2012-October/007928.html
> 
> QtGui doesn't link directly to libX11. It's an indirect link due to libGL.
> 
> As to your other question about using libxcb-* static against a different
> version of libxcb.so, I'd say that it's probably fine. I can ask my colleagues
> working on X, but my guess is that they don't have a private API the way we
> do.
> 
> So as long as it's a newer version at runtime, it should work.
> 
> --
> Thiago Macieira - thiago.macieira (AT) intel.com
>   Software Architect - Intel Open Source Technology Center