Maybe something like the otool utility.
Otool does not know anything about FPC resources, MachOView as well but it can at least show the binary content of the fpc.resources section.
I've already solved the reason why I needed to see what resources were linked, but some tool to view the linked resources would be useful (preferably a GUI tool to show icons, bitmaps, version info etc.). The same for Linux, here I am not aware of such tool as well.