Problem building src archive for component using Qt

[Duss Pirmin]

Hello Genodeans


I have a component that uses QToolButton. When I build it in my run  
script, the build works well.

When I want to build my src package I get the following error message:

button.o:(.data.rel.ro._ZTIN14Launcher_slice6ButtonE[_ZTIN14Launcher_slice6ButtonE]+0x10): undefined reference to `typeinfo for  
QToolButton'


I have an other component that uses QPushButton where I can build the  
src archive. If I replace QPusButton with QToolButton in this  
component, I get the same error.


I have tried to find out what might be the cause of it, but was not  
successful so far. Both of this buttons are in the library qt5_widgets  
(listed in the file
repos/libports/lib/mk/qt5_widgets_generated.inc)


Best regards,
Pirmin