[fpc-devel] Pre-processing to Post-processed

[L505]

I will be working on a feature or a program that outputs post-processed code
when using macros.

Just to verify that this feature hasn't already been implemented or a program
hasn't already been created by someone?

My ideas for a compiler feature or program:
 -If the -Sm option is on, and a user specifies some define macros
 -and if a macro dump compiler option is set,
the compiler or program runs through the code, replaces all macros, and dumps
the processed source code into files into some directory for the user. The
source code that is dumped for him, is the post-processed code. i.e. the user
will now get to see source code after his macros were dropped in place.

Basically, a feature to create unit files with macros shown directly in place.
Is there already a feature or program that does this? I don't want to reinvent
the wheel.