vlc2 not building

[Thomas Klausner <tk%giga.or.at@localhost>]

Hi!

vlc2 stopped building for on 6.99.28/amd64 in the last days. I've tried
it three times, so it's repeatable; but I still have a binary package
from Dec 13, so it must have worked then.

The error is:
In file included from input_manager.hpp:34:0,
                 from input_manager.cpp:33:
qt4.hpp:37:19: fatal error: QString: No such file or directory
compilation terminated.
In file included from extensions_manager.hpp:33:0,
                 from extensions_manager.cpp:24:
qt4.hpp:37:19: fatal error: QString: No such file or directory
compilation terminated.
Makefile:2204: recipe for target 'libqt4_plugin_la-input_manager.lo' failed
gmake[6]: *** [libqt4_plugin_la-input_manager.lo] Error 1
gmake[6]: *** Waiting for unfinished jobs....
Makefile:2218: recipe for target 'libqt4_plugin_la-extensions_manager.lo' failed
gmake[6]: *** [libqt4_plugin_la-extensions_manager.lo] Error 1
In file included from recents.hpp:27:0,
                 from recents.cpp:25:
qt4.hpp:37:19: fatal error: QString: No such file or directory
compilation terminated.
Makefile:2225: recipe for target 'libqt4_plugin_la-recents.lo' failed
gmake[6]: *** [libqt4_plugin_la-recents.lo] Error 1
qt4.cpp:29:24: fatal error: QApplication: No such file or directory
compilation terminated.
In file included from menus.hpp:28:0,
                 from menus.cpp:42:
qt4.hpp:37:19: fatal error: QString: No such file or directory
compilation terminated.
Makefile:2176: recipe for target 'libqt4_plugin_la-qt4.lo' failed
gmake[6]: *** [libqt4_plugin_la-qt4.lo] Error 1
Makefile:2183: recipe for target 'libqt4_plugin_la-menus.lo' failed
gmake[6]: *** [libqt4_plugin_la-menus.lo] Error 1
In file included from actions_manager.hpp:31:0,
                 from actions_manager.cpp:33:
qt4.hpp:37:19: fatal error: QString: No such file or directory
compilation terminated.
Makefile:2211: recipe for target 'libqt4_plugin_la-actions_manager.lo' failed
gmake[6]: *** [libqt4_plugin_la-actions_manager.lo] Error 1
In file included from main_interface.cpp:30:0:
qt4.hpp:37:19: fatal error: QString: No such file or directory
compilation terminated.
Makefile:2190: recipe for target 'libqt4_plugin_la-main_interface.lo' failed
gmake[6]: *** [libqt4_plugin_la-main_interface.lo] Error 1
In file included from dialogs_provider.cpp:31:0:
qt4.hpp:37:19: fatal error: QString: No such file or directory
compilation terminated.
Makefile:2197: recipe for target 'libqt4_plugin_la-dialogs_provider.lo' failed
gmake[6]: *** [libqt4_plugin_la-dialogs_provider.lo] Error 1
gmake[6]: Leaving directory 
'/scratch/multimedia/vlc2/work/vlc-2.0.9/modules/gui/qt4'


Does anyone have an idea what could be the change that broke that?
 Thomas