Errors while compiling tdebase

I have been trying to compile Trinity from source on a relatively current Gentoo system and am running into the following errors: In file included from /offline/1-1/TDE/main/tdebase/kcontrol/tdm/main.cpp:342:0: /offline/1-1/TDE/BUILD/tdebase-3.5.13/kcontrol/background/main.moc: In member function ‘virtual void* KBackground::tqt_cast(const char*)’: /offline/1-1/TDE/BUILD/tdebase-3.5.13/kcontrol/background/main.moc:81:41: error: cannot call member function ‘virtual void* TDECModule::qt_cast(const char*)’ without object and similar errors for tqt_invoke, tqt_emit, and tqt_property. I tried GCC versions 4.7.3, 4.6.3, 4.5.3 and experience the same error. It also occurs regardless of whether I am compiling with current git sources or the Trinity release 3.5.13.2 tarballs I found at http://depot-trinity.dotriver.eu/releases/3.5.13.2. Anybody else experience this? I tried playing around with the source code (not really knowing what I am doing) to get beyond the error but that just got me linker errors instead. Building TDE had been going pretty smoothly until this.