buildroot/package/x11r7/libxcb/Config.in

config BR2_PACKAGE_LIBXCB
	bool "libxcb"
	select BR2_PACKAGE_PTHREAD_STUBS
	select BR2_PACKAGE_XCB_PROTO
	select BR2_PACKAGE_XLIB_LIBXDMCP
	select BR2_PACKAGE_XLIB_LIBXAU
	help
		The X protocol C-language Binding (XCB) is a replacement for
		Xlib featuring a small footprint, latency hiding, direct access
		to the protocol, improved threading support, and extensibility.

		http://xcb.freedesktop.org/