首先从App Store下载Xcode,然后安装命令行工具终端下输入:xcode-select --install 然后终端下输入如下命令,安装Homebrewruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" 然后终端下运行brew updatebrew install gcc这样Mac上就装好gFortran了