我克隆了 QT 源代码库并签出了分支stable。
然后我按照本手册http://qt-project.org/wiki/Building_Qt_5_from_Git直到我必须做的事情./configure：
The test for linking against libxcb and support libraries failed!
You might need to install dependency packages, or pass -qt-xcb.
See src/plugins/platforms/xcb/README.
当我输入时./configure -qt-xcb：
Running configuration tests...
The test for linking against Xlib failed!
You might need to install dependency packages.
See src/plugins/platforms/xcb/README.
现在我被困住了。我找不到 Xlib 是什么，在哪里可以找到它或如何安装它。任何帮助是极大的赞赏！