Ok, for g++ sdk repo is required, installing right now, sadly after adding it and update the 'Ignoring Provides line with DepCompareOp' warning showed up. Binutils might need fixing according to this thread:
http://talk.maemo.org/showthread.php?t=84400


EDIT: g++ installed, still no issues with rebooting, now for KP

EDIT2: With KP50 now, no issues, though even though I installed libtcod-dev first thing I tried to compile cries lack of libtcod.hpp, not sure if related, but seems includes might be a bit off, also worth noting gcc/++-4.6 take some 36mb of rootfs.