下载：http://www.x.org/releases/X11R7.6/
交叉编译：
http://www.x.org/wiki/CrossCompilingXorg
开发文档：
http://www.x.org/wiki/Documentation
术语：
http://www.x.org/wiki/Development/Documentation/Glossary
DRI：
The Direct Rendering Infrastructure, also known as the DRI, is a framework for allowing direct access to graphics hardware under the X Window System in a safe and efficient manner. It includes changes to the X server, to several client libraries, and to the kernel (DRM, Direct Rendering Manager). The most important use for the DRI is to create fast OpenGL implementations providing hardware acceleration for Mesa. Several 3D accelerated drivers have been written to the DRI specification, including drivers for chipsets produced by 3DFX, AMD (formerly ATI), Intel and Matrox.
KDrive (or freedesktop.org Xserver or just Xserver) is a small X Window System server implementation created by Keith Packard. Unlike the X.Org Server, KDrive was not based on XFree86 code. It was used by X.Org developers as a testing ground for new ideas, such as EXA.
It practically superseded SmallX (also known as TinyX) and is commonly used in embedded systems with the need for a very thin X server.
A specific feature of KDrive was that it was configured at compile-time, not at run-time. It was often compiled to use the native Linux framebuffer device as output.
As of X.Org Server version 7.1, the KDrive framework was integrated into the reference implementation and is now part of the generic source code release of the server.
xserver目录结构：
http://www.x.org/wiki/Development/Documentation/XserverSourceLayout
其他：
http://www.linuxfromscratch.org/blfs/view/stable/
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