使用pip install 或者easy_install安装Python的各种包出现cc failed with exit status 1

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遇到的问题

如果你在Mac上用pip install或者easy_install安装Python的各种package的时候遇到如题的问题的话，看到这篇随笔应该会解决问题了。

之前都是在vps上直接安装使用的python框架和包，没想到在Mac上安装的时候出现了这个麻烦，最先想到的是看看百度上有没有人有同样的问题，结果很失望。虽然有这个问题但是没有给出有用的答案，只能求助于Google了。

解决的方法

首先你需要安装上developer tools，我当时就忘了这个茬。安装developer tools很简单，只需要在terminal输入以下的命令即可。

xcode-select --install

下面如果还是报错的话就是OSX自身的机制的问题了（是什么机制我也没仔细看，要想知道自行Google吧），这里只要输入两行命令让它对于不懂的东西闭嘴就行了。

export CFLAGS=-Qunused-arguments
export CPPFLAGS=-Qunused-arguments

要是还没解决的话我就帮不了咯。

这里再加上在Linux上会遇到的同样的问题，可以试试install  一个libffi-devel，应该能结局问题。