今天运行飞鸽传书时报错：
libxcb-render-util.so.0: wrong ELF class: ELFCLASS32
明显是链接库libxcb-render-util.so.0不正确，我是64位系统，这个库文件却是32位的，去/usr/lib找了一下，确实有这个文件，但是是32位的，需要安装一个64位的。但是一直在想apt-get怎么安装这个库，试了apt-get install xorg-dev都不行，后来发现，居然是apt-get install libxcb-render-util，反正就是按tab键就出来了，接下来也出现了类似报错，缺啥补啥。
还有一个报错
./QIpmsg: error while loading shared libraries: libxcb-sync.so.1: cannot open shared object file: No such file or directory
这里我也找不到 libxcb-sync.so.1这个库，但是有个libxcb-sync.so.0.0.0，于是建了个libxcb-sync.so.1的软链接，指向libxcb-sync.so.0.0.0
能运行了，也没发现什么问题，只是不能中文切换输入法，这个很蛋疼。
补充一下，飞鸽传书是用QT写的，QtGui 和 QtWidgets 会对xcb库有依赖。
libfontconfig1-dev
libfreetype6-dev
libx11-dev
libxext-dev
libxfixes-dev
libxi-dev
libxrender-dev
libxcb1-dev
libx11-xcb-dev
libxcb-glx0-dev
Additionally, if you do not configure with -qt-xcb, you should also install these development packages:
libxcb-keysyms1-dev
libxcb-image0-dev
libxcb-shm0-dev
libxcb-icccm4-dev
libxcb-sync0-dev
libxcb-xfixes0-dev
libxcb-shape0-dev
libxcb-randr0-dev
libxcb-render-util0-dev
因此执行：
sudo apt-get install libfontconfig1-dev libfreetype6-dev libx11-dev libxext-dev libxfixes-dev libxi-dev libxrender-dev libxcb1-dev libx11-xcb-dev libxcb-glx0-dev libxcb-keysyms1-dev libxcb-image0-dev libxcb-shm0-dev libxcb-icccm4-dev libxcb-sync0-dev libxcb-xfixes0-dev libxcb-shape0-dev libxcb-randr0-dev libxcb-render-util0-dev
sudo apt-get install libfontconfig1-dev libfreetype6-dev libx11-dev
libxext-dev libxfixes-dev libxi-dev libxrender-dev libxcb1-dev
libx11-xcb-dev libxcb-glx0-dev libxcb-keysyms1-dev libxcb-image0-dev
libxcb-shm0-dev libxcb-icccm4-dev libxcb-sync0-dev libxcb-xfixes0-dev
libxcb-shape0-dev libxcb-randr0-dev libxcb-render-util0-dev
apt-get install libxcb-render-util0:i386 libxcb-image0:i386 libxcb-icccm4:i386 libxcb-xfixes0:i386 libxcb-randr0:i386 libxcb-shape0:i386 libxcb-shm0:i386 libxcb-keysyms1:i386
参考
xcb官网：xcb.freedesktop.org
ubuntu软件包
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