A few critical packages in gentoo were released from ~ to stable recently, and through the upgrade I expericend a couple bumps.
After the upgraded packages were installed in order for things to compile after you will need to select the newer environment. YMMV
sudo binutils-config -l sudo binutils-config 2 sudo gcc-config -l sudo gcc-config 6
resources
GF20: C compiler cannot create executables
http://forums.gentoo.org/viewtopic.php?t=294109
