ggrab on dreambox

[yoda1]

I'm trying to compile ggrab for the dreambox (PowerPC). I'm using the crosscompiler under SuSE Linux 8.0. With the normal Makefile (for Linux on a 386 machine) it's doing fine. But if I include GXX=powerpc-linux-g++ in the Makefile, it starts to compile but produces an errormesage. Something like: incomplete struct in pesstream.h line 53: struct timeval m_last_time;
Is there something else I have to change in the Makefile or what do have to do?

Thank you