libQGLViewer and Qt5

[Anton Gladky]

Hi Laurent,

as we agreed before, we will ship both Qt4 and Qt5 versions.
It is staying next on my todo list. I think it will also be possible
to prepare such a package for stable Jessie.

Best regards


Anton

2015-06-18 16:56 GMT+02:00 Laurent Rineau <
laurent.rineau__fedora at normalesup.org>:

> Hi Anton, Frederic, Leopold,
>
> Have you progressed on the subject?
>
> Will you support Qt4 and Qt5 at the same time, or will you impose Qt5 in
> libGLViewer?
>
> Which Debian versions are impacted? Will it be possible to install
> "libGLViewer-Qt5" in Debian testing and stable?
>
>
> The CGAL project is willing to switch completely from Qt4 to Qt5 during
> this
> summer, with the publishing of CGAL-4.7-beta1 (planned in the early
> August 2015), and I am wondering what will be the plan for our users on
> Debian/Ubuntu.
>
>
> On the Fedora side, I planned to allow the installation of libQGLViewer-qt4
> and libQGLViewer-qt5 in parallel.
>
>
>
> Le Monday 04 May 2015 18:44:30 Anton Gladky a écrit :
> > Hi Laurent,
> >
> > it is exactly, what I plan to do within the next several
> > weeks. I also built already libqglviewer against Qt5 for
> > our experimental branch [1]. It will also be renamed
> > by adding -qt4 and -qt5 suffixes. Later -qt4 package
> > will be removed as planned for the next stable release.
> >
> > Maybe, you are also right with the renaming library
> > regarding numbering.
> >
> > [1]
> >
> https://buildd.debian.org/status/package.php?p=libqglviewer&suite=experimen
> > tal
> >
> > Best regards
> >
> > Anton
> >
> >
> > 2015-05-04 15:04 GMT+02:00 Laurent Rineau
> >
> > <laurent.rineau__fedora at normalesup.org>:
> > > Dear Debian maintainers of libQGLViewer,
> > >
> > > I am the Fedora maintainer of libQGLViewer, and I would like to share
> > > ideas
> > > about ABI compatibility and about the Qt5 support of that package.
> > >
> > > The upstream libQGLViewer already supports Qt5. The problem is that the
> > > upstream name of the library does not change when it is compiled with
> Qt4
> > > or Qt5. That does not help the parallel installation of the two
> versions.
> > >
> > >
> > > In the Fedora package, I plan to rename the Qt5 version to
> > > libQGLViewer-qt5.>
> > > For example, the .so files will be (on x86_64):
> > >   - for Qt4:
> > >      /usr/lib64/libQGLViewer-qt4.so
> > >
> > >   - for Qt5:
> > >      /usr/lib64/libQGLViewer-qt5.so
> > >
> > > I will also add a symbolic link /usr/lib64/libQGLViewer.so, that will
> > > points to the Qt4 version, for compatibility reason.
> > >
> > > Do you have similar plans? If you do, I could try to suggest the
> upstream
> > > author to apply that new naming convention in the upstream version.
> > >
> > >
> > > For the ABI compatibility, I have found out that the ABI of that
> library
> > > changes for each release. For that reason, I have decided to bump the
> > > SONAME of the library at each version: for example for version 2.5.3,
> the
> > > soname of the Qt4 version is "libQGLViewer.so.2.5.1", with the full
> > > version encoded in the SONAME. Do you have comments/suggestions about
> > > that?
> > >
> > > Best regards,
> > >
> > > Laurent Rineau
> > >
> > > --
> > > Laurent Rineau
> > > http://fedoraproject.org/wiki/LaurentRineau
>
> --
> Laurent Rineau
> http://fedoraproject.org/wiki/LaurentRineau
>
>
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