Can Canon fd bayonet be equipped with ef?

I can't. Canon PTZ needs a fuselage to control the aperture. The problem of flange focal length will make most lenses unable to focus at infinity after switching. The second problem can be avoided by changing the size of the bayonet, but the first problem is generally insoluble. Even if there is no patent to open a special aperture control circuit, this transformation is also an infringement.