[fpc-pascal] Recursive unit search path

[L]

-Fu/home/me/project1/units/*.*

No such thing for FPC, right? Recursive units searches?

Could be useful, but dangerous if directories contain different versions of the source
file in different places.
Still, in many projects I get sick of continually adding new directories to the search
path - and in many projects there are not more than one version of a source file kicking
around.

Is there an existing recursive option like this for -Fu and -Fi?