做下记录，报错的图忘记截了....解决方法放这吧。系统是MacOS
~ ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null
==> This script will install:
/usr/local/bin/brew
...
~
~ brew install ninja
==> Downloading https://homebrew.bintray.com/bottles/ninja-1.9.0.mojave.bottle.tar.gz
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...
