Hello
I assume you are building code for ColdFire MCU. Am I right?
If this is the case you can create a file containing all the includes you want to apply to all your source file (i.e. This file contains what you have previously specified in the Prefix Text edit box) and specify it as a prefix file.
You can specify that a file mydefine.h for example is a prefix file adding the option
-prefix mydefine.h
in C/C++ Build > Settings > ColdFire Compiler > Language Settings > Other flags edit box.
CrasyCat