phonon-vlc from Git won't build

[Nikos Chantziaras]

I last tried to pull and build phonon-vlc from Git about 2 weeks or ago, 
and there was an error.  I just tried now again, and the same error is 
still there:

make -j2
Generating moc_audiodataoutput.cpp
Generating moc_mediaobject.cpp
Generating moc_avcapture.cpp
/var/tmp/portage/media-sound/phonon-vlc-9999/work/phonon-vlc-9999/vlc/experimental/avcapture.h:45: 
Error: Undefined interface
automoc4: process for 
/var/tmp/portage/media-sound/phonon-vlc-9999/work/phonon-vlc-9999_build/vlc/moc_avcapture.cpp 
failed: Unknown error