you could put a Makefile that does nothing for Linux and Windows for now. someone might be able to get yuv going in windows by including the Quicktime headers for yuv_film/movie/video. not sure about doing yuv texturing in Windows or Linux, though hardware from Nvidia and ATI definitely support it.
AFAIK, YUV textures are only available using Direct3D under windows... I think Apple is the only OpenGL vendor to include general support for YUV textures. Can anyone confirm/deny this?
Is it possible to do HW assisted YUV->RGB(A) conversion using texture transfer options and a colour matrix in OpenGL?
daniel