So, I was trying to compile an ancient Delphi 7 project in Lazarus. After running the import Delphi project wizard, and attempting to compile. After removing some Windows specific code (Windows version detection in OSinfo.pas has no meaning when compiling for Linux) ran into an error saying

Can't find unit exeinfo used by lnfodwrf

This error seems to be caused by the presence of a unit in my Delphi 7 project having a name clash with a Lazarus RTL unit, strings.pas. After renaming the unit, the problem went away. Now there is some other problem about a missing using TTcpClient. Oh well….