this enable the software xcb rendering engine. It allows the same
features than the software xlib engine. It require the XCB and XCBImage
-libraries. For the test programs, XCBICCCM is also needed.
+libraries. For the test programs, XCBICCCM is also needed. It is not
+recommended to use this as it's experimental and will create problems
+with both ecore_evas and enlightenment itself.
--enable-fb[=static]
--enable-xrender-xcb[=static]
-this is the same as xrender-x11 but uses/exposes an xcb api.
+this is the same as xrender-x11 but uses/exposes an xcb api. It is not
+recommended to use this as it's experimental and will create problems
+with both ecore_evas and enlightenment itself.
--enable-gl-x11[=static]