4.5.4 Preprocessor Control
The following options control the use of preprocessor. See Preprocessor, for a detailed discussion.
- --define=symbol[=value]
- -D symbol[=value]
Define the preprocessor symbol symbol. Optional value supplies the new symbol value. This option is passed to the preprocessor verbatim.
- -I dir
- --include-dir=dir
Add the directory dir to the list of directories to be searched for preprocessor include files. See Preprocessor.
- --no-preprocessor
Do not use external preprocessor. See Preprocessor.
- --preprocessor=prog
Use prog as a preprocessor for configuration file. The default preprocessor command line is
m4 -s
, unless overridden while configuring the package (see Default Preprocessor).