If you are cross compiling for ARM, use distribution packages or download prebuilt toolchains from Linaro.
sudo apt-get install lib32stdc++6 lib32z1 # These are ia32 binaries mkdir -p deps/`uname -m`-linux-gnu cd deps wget http://releases.linaro.org/14.09/components/toolchain/binaries/gcc-linaro-arm-linux-gnueabihf-4.9-2014.09_linux.tar.xz tar --strip=1 -C `uname -m`-linux-gnu -xf gcc-linaro-arm-linux-gnueabihf-4.9-2014.09_linux.tar.xz wget http://releases.linaro.org/14.09/components/toolchain/binaries/gcc-linaro-aarch64-linux-gnu-4.9-2014.09_linux.tar.xz tar --strip=1 -C `uname -m`-linux-gnu -xf gcc-linaro-aarch64-linux-gnu-4.9-2014.09_linux.tar.xz cd ..