Can I adapt old lenses to fujifilm x?

Here is what the site says about that.

From Lenses: Adapters: Mirrorless mounts are shallow, so old manual-focus lenses from film cameras adapt easily and cheaply. It's a fun way to try fast or unusual lenses, without autofocus.

From Pentax K-x: Adapting lenses: Old manual K lenses fit directly.

Quoted from this site's pages.