build-ffi-gem.sh

sudo apt-get udpate
sudo apt-get install -y git build-essential
sudo apt-get install -y vim tmux 
apt-get install -y git libssl-dev zlib1g-dev libssl-dev libreadline6-dev libxml2-dev libsqlite3-dev
apt-get install -y libruby
apt-get install -y libxml2 libxslt

mkdir -p ~/work/ruby

pushd ~/work/ruby
  RUBY_VERSION=ruby-2.1.7
  RUBY_ARCHIVE=$RUBY_VERSION.tar.gz
  wget https://cache.ruby-lang.org/pub/ruby/2.1/$RUBY_ARCHIVE
  tar -xzvf $RUBY_ARCHIVE
  pushd $RUBY_VERSION
    ./configure
    make
    sudo make install
  popd

  wget -O ffi-1.9.3.tar.gz https://github.com/ffi/ffi/archive/1.9.3.tar.gz
  tar -xzvf ffi-1.9.3.tar.gz
  pushd ffi-1.9.3
    # broken patch file here
    curl -L https://gist.githubusercontent.com/allomov-altoros/cad38f3e988f5fcaa23c/raw/7338512a753ac452e6a2db72e13c4f161ce22553/ffi-power.patch > ffi-power.patch
    patch --ignore-whitespace -p1 < ffi-power.patch
    bundle install
    config_guess_path=`find . -name config.guess`
    curl "http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD" > "${config_guess_path}"
    config_sub_path=`find . -name config.sub`

    rake

  popd
popd