报错信息如下：
configure: error: Cannot use cairo-ft backend, although cairo claims it is working. Please check your caito installation and/or update cairo if necessary or set CAIRO_CFLAGS/CAIRO_LIBS accordingly.
Cairo是R中一个能输出高清图片的包，很好用。楼主新换了MBP后就怎么都安不上了。这时就会拷问自己：上一个MBP安装出bug时怎么不记下来？
解决方法：
1 终端安装
brew install cairo
2 重启R，安装Cairo
