apt: gcc g++ automake flex bison ruby1.9.1-dev llvm-dev zlib1g-dev libyaml-dev libssl-dev libgdbm-dev libreadline-dev libncurses5-dev
yum: gcc gcc-c++ automake flex bison ruby-devel rubygems llvm-devel zlib-devel libyaml-devel openssl-devel gdbm-devel readline-devel ncurses-devel
port: openssl readline libyaml gdbm
brew: openssl readline libyaml gdbm
pacman: gcc automake flex bison ruby llvm zlib libyaml openssl gdbm readline ncurses
