bedazzled@bedazzled ~ $ gcc-config -l
 [1] x86_64-pc-linux-gnu-3.4.4
 [2] x86_64-pc-linux-gnu-3.4.4-hardened
 [3] x86_64-pc-linux-gnu-3.4.4-hardenednopie
 [4] x86_64-pc-linux-gnu-3.4.4-hardenednopiessp
 [5] x86_64-pc-linux-gnu-3.4.4-hardenednossp
 [6] x86_64-pc-linux-gnu-4.0.2 *
bedazzled@bedazzled ~ $ gcc --version
gcc (GCC) 4.0.2 (Gentoo 4.0.2-r1, pie-8.7.8)
Copyright (C) 2005 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

bedazzled@bedazzled ~ $ cat /proc/version
Linux version 2.6.14-gentoo-r3 (root@bedazzled) (gcc version 3.4.4 (Gentoo 3.4.4-r1, ssp-3.4.4-1.0, pie-8.7.8)) #1 PREEMPT Tue Nov 29 00:32:20 EET 2005
bedazzled@bedazzled ~ $ dmesg | grep -i gcc
nvidia: version magic '2.6.14-gentoo-r3 preempt gcc-4.0' should be '2.6.14-gentoo-r3 preempt gcc-3.4'
nvidia: version magic '2.6.14-gentoo-r3 preempt gcc-4.0' should be '2.6.14-gentoo-r3 preempt gcc-3.4'
nvidia: version magic '2.6.14-gentoo-r3 preempt gcc-4.0' should be '2.6.14-gentoo-r3 preempt gcc-3.4'
nvidia: version magic '2.6.14-gentoo-r3 preempt gcc-4.0' should be '2.6.14-gentoo-r3 preempt gcc-3.4'