%general-entities; ]> This chapter contains instructions to build and configure a graphical user environment. You will need to choose one of the two packages in BLFS that implements the X Window System: Xorg X11R7 (), or XFree86 (). The functionality of these two packages is quite similar. In fact, the base system of Xorg was derived from the XFree86-4.4.0RC2 code (note that the Xorg build system has changed, but the underlying core code is the same). Differences in the licensing philosophies was the original reason for the split. A second reason for the forking of X packages is the stated goals of the developers. Some developers were unhappy with the administration and progress of XFree86. The X.org Foundation's future plans include significant improvements to the internals of the system and more frequent releases. Xorg-&xorg7-version; introduces a completely autotooled build system which means that the packages build and install using the conventional configure, make and make install commands, but it now requires installing more than 100 different packages. Most large commercial distributions have decided to use the Xorg package, but several still provide XFree86. XFree86 continues to be a solid, conservative application with excellent driver support.