[ANNOUNCE] automoc4 from kdesupport now supported for building KDE

[Matthias Kretz]

On Monday 19 May 2008, Alexander Neundorf wrote:
> On Sunday 18 May 2008, Matthias Kretz wrote:
> > On Saturday 17 May 2008, Andras Mantia wrote:
> > > On Sunday 11 May 2008 00:58:38 Alexander Neundorf wrote:
> > > > If you experience any problems with automoc, please let us know at
> > > > kde-buildsystem at kde.org (or here).
> > >
> > > Here is a problem: kdebase fails to build if there are some older
> > > include/solid/control/ifaces around.
> > > The error is:
> > > cd
> > > /data/development/build/kde-trunk/kdebase/workspace/solid/networkmanage
> > >r- 0. 7 && /opt/kde4/bin/automoc4
> > > /data/development/build/kde-trunk/kdebase/workspace/solid/networkmanage
> > >r- 0. 7/solid_networkmanager07_automoc.cpp
> > > /data/development/sources/kde-trunk/kdebase/workspace/solid/networkmana
> > >ge r- 0.7
> > > /data/development/build/kde-trunk/kdebase/workspace/solid/networkmanage
> > >r- 0. 7 /opt/qt4/bin/moc [....]
> > > Generating
> > > /data/development/build/kde-trunk/kdebase/workspace/solid/networkmanage
> > >r- 0. 7/networkinterface.moc from
> > > /data/development/sources/kde-trunk/kdebase/workspace/solid/networkmana
> > >ge r- 0.7/networkinterface.h
> > > /data/development/sources/kde-trunk/kdebase/workspace/solid/networkmana
> > >ge r- 0.7/manager.h:35: Error: Undefined interface
> > > [...]
> > > automoc4: process
> > > for
> > > /data/development/build/kde-trunk/kdebase/workspace/solid/networkmanage
> > >r- 0. 7/manager.moc failed: Unknown error
> > > pid to wait for: 0
> > > processes in queue: 11
> > >
> > >
> > > The problem is this line in manager.h:
> > > #include <solid/control/ifaces/networkmanager.h>
> > >
> > > This picks up the installed networkmanager.h instead of the one from
> > > kdebase/workspace/libs/solid/control/ifaces .
> > >
> > > I tried to add
> > >    ${CMAKE_SOURCE_DIR}/workspace/libs
> > > to the include_directories, but seems that this is ignored or searched
> > > after the system path.
> > >
> > > So the solution to build kdebase is to remove your installed version
> > > and build again.This also does not work if e.g you have KDE 4.0.x
> > > installed in /usr like it is on openSUSE. So you have to:
> > > - remove the old files (e.g from /opt/kde4/include if KDE trunk was
> > > installed there)
> > > - build AND install kdebase/workspace/libs/solid (so the correct
> > > headers are installed to /opt/kde4)
> > > - build now kdebase/workspace/solid
> > >
> > > I find this behavior broken, automoc4 should find the header files that
> > > are in kdebase/workspace/libs/solid/control/ifaces as specified by the
> > > include_directory command.
> >
> > automoc4 uses the include directories as specified by include_directory.
> > At least that's what I wrote and expect the code to do. :-)
> >
> > Take a look at the generated <target>_automoc.cpp.files file. Its second
> > line contains all the include directories as they'll get passed to moc.
> > This line gets generated by the configure_files call in Automoc4.cmake.
>
> CMake sorts the include dirs internally, so that in-project include dirs
> are always before out-of-project include dirs.
> (if CMAKE_INCLUDE_DIRECTORIES_PROJECT_BEFORE is true, done in
> kdelibs/cmake/modules/KDE4Defaults.cmake)
> Maybe this has to be added for automoc ?

Alex, could you take a look at this please? Automoc4Config.cmake uses
get_directory_property(_moc_incs INCLUDE_DIRECTORIES)
as the ordered include paths to pass to moc. Why does this not work? Or why 
does this not work only in kdebase/workspace/solid/ ?

-- 
________________________________________________________
Matthias Kretz (Germany)                            <><
http://Vir.homelinux.org/
MatthiasKretz at gmx.net, kretz at kde.org,
Matthias.Kretz at urz.uni-heidelberg.de
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