Instalando Ruby 2.0.0 no Mountain Lion com OpenSSL

Verifique se o OpenSSL já está instalado:

brew install OpenSSL

E instale o Ruby:

brew --prefix openssl
FLAGS
='-g -O2' RUBY_CONFIGURE_OPTS=--with-openssl-dir=/usr/local/opt/openssl rbenv install 2.0.0-p247