Configure error on Ubuntu 8.10 x86

I just tried to build autopackage in a Virtual Machine with Ubuntu 8.10 x86
and got the following error when trying to build the gtk manager:

checking for GTK2... yes
configure: error: conditional "am__fastdepCXX" was never defined.
Usually this means the macro was only invoked conditionally.
make: *** Keine Regel, um »clean« zu erstellen.  Schluss.
make: *** Keine Targets angegeben und keine »make«-Steuerdatei gefunden.
 Schluss.
cp: Aufruf von stat für „autopackage-manager-gtk" nicht möglich: No such
file or directory
WARNING: Manager was not built. Make sure that you remembered to run
./autogen.sh in manager/

Does someone know how to fix this? I already searched the internet a bit but
couldn't find a solution.