$ wget https://releases.linaro.org/archive/13.11/components/toolchain/binaries/gcc-linaro-aarch64-none-elf-4.8-2013.11_linux.tar.xz -P /tmp
$ tar xJvf /tmp/gcc-linaro-aarch64-none-elf-4.8-2013.11_linux.tar.xz -C /opt/toolchains