Ruby on rails 3 安装bluecloth-配置选项？

我试着通过打字来安装bluecloth gem

gem install bluecloth

但当我这样做时，会收到以下错误消息：

checking for random()... *** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers.  Check the mkmf.log file for more
details.  You may need configuration options.

Provided configuration options:
    --with-opt-dir
    --without-opt-dir
    --with-opt-include
    --without-opt-include=${opt-dir}/include
    --with-opt-lib
    --without-opt-lib=${opt-dir}/lib
    --with-make-prog
    --without-make-prog
    --srcdir=.
    --curdir
    --ruby=/Users/cyrusstoller/.rvm/rubies/ruby-1.9.2-p136/bin/ruby
    --with-rdiscount-dir
    --without-rdiscount-dir
    --with-rdiscount-include
    --without-rdiscount-include=${rdiscount-dir}/include
    --with-rdiscount-lib
    --without-rdiscount-lib=${rdiscount-dir}/lib

---

我应该提供哪些选项？

在尝试安装gem之前，我需要安装markdown

跑

brew安装降价

然后

宝石蓝布

---

在Ruby 2.2.3下安装bluecloth 2.0.11时，我遇到了同样的问题。原来Ruby 2.2.3太新了。回到Ruby 2.1.5解决了这个问题

检查你的.ruby版本