Causes the preprocessor to output a file source.deb where source is the name of your source file. This file contains the expanded source code produced by the preprocessor.
>>-.---.-.----.--DEBUGFILE--------------->< +-/-+ +-NO-+
None
| Default: | NODEBUGFILE | 
| Phase: | Syntax check | 
| $SET: | Initial | 
Comments:
This file output by this directive is for use in debugging preprocessor problems.