emerge portage
etc-update
merge all packages
type: '-5' and push enter

emerge binutils glibc
etc-update
merge all packages...
type: '-5' and push enter
emerge eselect
eselect binutils set 2
env-update && source /etc/profile
emerge -P binutils

emerge portage
emerge glibc binutils gcc libstdc++-v3 libtool

gcc-config -l

gcc-config #
env-update && source /etc/profile
emerge -P gcc

emerge portage
emerge binutils glibc gcc libstdc++-v3 libtool