当你安装QT 5.0 时，启动的时候会出现如下错误：
Failed to load platform plugin "xcb". Available platforms are: linuxfb minimal xcb Abandon
这是因为相关的库没有安装完整，解决方法很简单，如下：
sudo apt-get install "^libxcb.*" libx11-xcb-dev libglu1-mesa-dev libxrender-dev
It's ok, so easy!
ubuntu 安装QT 5.0出现错误：Failed to load platform plugin "xcb".
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