Download last source code here http://buildroot.uclibc.org/download.html
use "mips-linux-gcc" from /home/smirnov/buildroot-2013.11/output/host/usr/bin
sysroot is /home/smirnov/buildroot-2013.11/output/staging
use "mips-linux-gcc" from /home/smirnov/buildroot-2013.11/output/host/usr/bin
sysroot is /home/smirnov/buildroot-2013.11/output/staging