9 - sudo dpkg --add-architecture i386
10 - sudo rm /var/lib/apt/lists/* -vfr
11 - sudo apt-get update -qq
12 - sudo apt-get install -qq cmake gcc-multilib libc6:i386 libgcc1:i386
13 - wget https://launchpad.net/gcc-arm-embedded/4.9/4.9-2015-q3-update/+download/gcc-arm-none-eabi-4_9-2015q3-20150921-linux.tar.bz2
14 - bzip2 -d gcc-arm-none-eabi-4_9-2015q3-20150921-linux.tar.bz2
15 - tar xfv gcc-arm-none-eabi-4_9-2015q3-20150921-linux.tar
18 - export PATH=$PWD/gcc-arm-none-eabi-4_9-2015q3/bin:$PATH
21 - cd build_generic && make -j`nproc`
23 - arm-none-eabi-gcc --version
25 - cd build_cortex-m4 && make -j`nproc`