在OS X上安装Ruby的问题

Question

使用Ruby on Rails导航到目录时，我被告知

ruby-1.9.3-p374 is not installed.

To install do: 'rvm install ruby-1.9.3-p374'

我输入指示的命令，安装停止在以下消息：

Error running '__rvm_make -j 1', please read /Users/MyName/.rvm/log/1383070768_ruby-1.9.3-p374/make.log There has been an error while running make. Halting the installation.

我对如何继续感到困惑。提前谢谢。