命令行执行
xcode-select --install
出现错误
xcode-select: error: command line tools are already installed, use "Software Update" to install updates
解决办法:
$ rm -rf /Library/Developer/CommandLineTools
$ xcode-select --install
如果还是报错,加上sudo
$ sudo rm -rf /Library/Developer/CommandLineTools
$ sudo xcode-select --install