Re: [Ayatana-dev] Unity-2D and Qt5

["a.grandi@xxxxxxxxx" <a.grandi@xxxxxxxxx>]

HI,

I've some quick questions before proceding with this tasks.

On 5 January 2012 02:04, Florian Boucault
<florian.boucault@xxxxxxxxxxxxx> wrote:
> ./configure -developer-build -nomake examples -nomake tests -no-gtkstyle
> -no-webkit -opensource -confirm-license
> make -j3

I notice that you don't set a specific installation path (for example
/opt/qt5 ) and you don't execute "make install".
Does it mean that these libs will overwrite my Qt4 libs installed on my Ubuntu?
When do you make install these libs?

> 2) Recompile the libraries that Unity 2D depends on against Qt5, that are
> dee-qt, bamf-qt, dbusmenu-qt and dconf-qt. I adapted them so that they
> compile and work more or less fine against Qt5:
>
> bzr branch lp:~fboucault/dee-qt/qt5
> cd qt5
> cmake .
> make
> cd ..

same here... no "make install" at all... is it right?
How can the cmake find the Qt5 libs if they're not installed somewhere?

> 3) Finally modify Unity 2D's code for it to compile against Qt5. For that
> there is a bunch of tasks that need to be accomplished properly listed just
> after. To get a (working) idea of it I pasted a very crude patch that does
> part of it there:
>
> http://pastebin.com/31G903eY

have you already pushed this branch somewhere? Or do you prefer me to
branch the original unity-2d and apply the patch you wrote?ù

> Qt4 compatible tasks:
> * fix Qt includes to be fully specified (e.g. QObject becomes
> QtCore/QObject)
> * CMakeLists.txt:
> - use INCLUDE_DIRS instead of INCLUDE_DIR
> - migrate away from qt4_automoc in panel and libunity-2d-private and use
> qt4_wrap_cpp instead (removes all #include .moc in *.cpp)
>
> Qt5 only tasks:
> * CMakeLists.txt:
> - replace uses of qt4_wrap_cpp with qt5_wrap_cpp
> - replace uses of qt4_add_dbus_adaptor with qt5_add_dbus_adaptor
> * drop usage of QX11Info (maybe isolate dependencies on X while at it)
> * in QML: Accessible.name and Accessible.role do not exist anymore; find the
> replacement

If I correctly understand you have applied these modifications only in
a small part of the code and the task is to apply them everywhere in
the unity-2d code, is it right?

> * That makes Unity 2D run with Qt5 but still using QtQuick 1.1. We will also
> want to migrate to QtQuick 2.0.

yes, we need to change the import at the beginning of *.qml files.
I can try to do it once I'm sure that everything else runs fine.

> * automoc in Qt5 will be done through its inclusion in CMake 2.8.7 and we
> will be able to remove:
>
> set(FOO_MOC_HEADERS foo_header.h)
> qt5_wrap_cpp(FOO_MOC_SRCS ${FOO_MOC_HEADERS})
> add_library(foo SHARED ${FOO_SRCS} ${FOO_MOC_SRCS})
>
> by adding:
> set(CMAKE_AUTOMOC ON)
> set(CMAKE_INCLUDE_CURRENT_DIR ON)

for the moment we just have to wait for automoc to be includes in CMake, right?

Thanks!

-- 
Andrea Grandi - Nokia Qt Ambassador
Ubuntu Member: https://launchpad.net/~andreagrandi
website: http://www.andreagrandi.it