前置

brew install libyaml openssl readline

编译

./configure --prefix=/Users/yakir/local/ruby \
    --disable-silent-rules \
    --without-gmp \
    --with-opt-dir=${BREW_OPT}/openssl:${BREW_OPT}/libyaml:${BREW_OPT}/readline && \
    make -j12 && make install

更新gem

gem update --system

安装 rubygems

gem install cocoapods
gem install github-pages