rvm安装时碰到的问题(1)

错误，Can not find compiler and 'make' tool - make sure Xcode and/or Command Line Tools are installed.

实际上报这个错误的原因是我们安装了xcode而没安装commond line ,接下来你要做的是打开xcode，Preferences,Downloads,Commond Lines Tool,点击下载即可。