Mailfromd Manual (split by node):   Section:   Chapter:FastBack: Invocation   Up: options   FastForward: MTA Configuration   Contents: Table of ContentsIndex: Concept Index

8.1.3 Preprocessor Options

Following command line options control the preprocessor feature. See Preprocessor, for a detailed discussion of these.


Do not run the preprocessor.


Use command as the external preprocessor instead of the default m4.

-D name[=value]

Define a preprocessor symbol name to have a value value.

-U name

Undefine the preprocessor symbol name.


Stop after the preprocessing stage; do not run the compiler proper. The output is in the form of preprocessed source code, which is sent to the standard output.