Rebuilding SysUtils.dcu: Cannot Find FFMT.OBJ

Problem/Question/Abstract:

Rebuilding SysUtils.dcu: Cannot Find FFMT.OBJ

Answer:

When I rebuilt my project, some DCUs were not accepted because they were compiled with a different version of other units.. so I decided to rebuild everything.

I added directories like $(DELPHI)\source\rtl\sys to my library search path.

Then I got the error message.