Xenocara is the OpenBSD

OpenBSD

OpenBSD is a Unix-like computer operating system descended from Berkeley Software Distribution , a Unix derivative developed at the University of California, Berkeley. It was forked from NetBSD by project leader Theo de Raadt in late 1995...

 build infrastructure for the project's customised X.Org

X.Org Server

X.Org Server refers to the X server release packages stewarded by the X.Org Foundation,which is hosted by freedesktop.org, and grants...

 7.4. Until release 6.9, X.Org used imake

Imake

imake is a build automation system implemented on top of the C preprocessor.imake generates makefiles from a template, a set of cpp macro functions, and a per-directory input file called an Imakefile...

 but recent modularised versions have switched to GNU

GNU

GNU is a Unix-like computer operating system developed by the GNU project, ultimately aiming to be a "complete Unix-compatible software system"...

 autotools. Xenocara uses BSD make and is designed to ease building and maintenance of modularised X.Org within the OpenBSD CVS

Concurrent Versions System

The Concurrent Versions System , also known as the Concurrent Versioning System, is a client-server free software revision control system in the field of software development. Version control system software keeps track of all work and all changes in a set of files, and allows several developers ...

 tree. It first appeared with OpenBSD 4.2, released on 1 November 2007.

Apart from X.Org

X.Org Server

X.Org Server refers to the X server release packages stewarded by the X.Org Foundation,which is hosted by freedesktop.org, and grants...

 Xenocara includes several other projects including window managers

X window manager

An X window manager is a window manager which runs on top of the X Window System, a windowing system mainly used on Unix-like systems.Unlike the Mac OS and Microsoft Windows platforms which have historically provided a vendor-controlled, fixed set of ways to control how windows and panes display...

 FVWM

FVWM

The F Virtual Window Manager is a virtual window manager for the X Window System. Originally a twm derivative, FVWM has evolved into a powerful and highly configurable environment for Unix-like systems.- History:...

, wm2

Wm2

wm2 is a minimalistic reparenting window manager for the X Window System written by Chris Cannam. It provides support for moving, resizing, and deleting windows, but does not support icons. In place of icons, wm2 allows for temporary hiding of windows from the desktop; hidden windows can be...

 and cwm

Cwm (window manager)

cwm is a stacking window manager for X Window System available on OpenBSD , NetBSD, DragonFlyBSD and Linux distributions using pkgsrc, Gentoo Linux and some other Linux distributions....

.