FPC complete application build

[lagprogramming]

   Is there a way to force a complete build of an application?
   I'd like to modify some FPC source files, build an app using an external IDE like Lazarus or fpgui, then revert the changes done to the FPC source files. The application should be built based on the changed(modified) files. The point is to avoid a complete rebuild of FPC by using an additional command line parameter(or something like that).

[Bart]

AFAIK you need to rebuild fpc before changes made to it's source can be compiled into your program.

Bart