It appears that the solution is to place all module-wide configurations in a separate header file, and then to #include this file in the parent module, as well as in each of the, possibly numerous, sub-component header files.

// file blah.c
#include "jobdefines.h"
#include "blahdef1nes.h"

is, at least in my opinion, a lot cleanter than including jobdefines in blahdef1nes

simply because most files will not have a 'local' defines.h. If you start insisting on local define files you will end up with a lot of files of one line

such as file1defines will have one line
#include jobdefines
and nothing else

Erik

PS include the SFRs in jobdefines, they are global whatever else you do. that will get rid of the "conditional SFR definition.

BTW I AM curious, why do you not use a global SFR definition .h file?