Preprocessor Phase Options Sample Clauses

Preprocessor Phase Options. The options listed below control the C preprocessor, which is run on each C source file before actual compilation. Some options described only make sense when used in com- bination with the -E option (preprocess only), as the requested preprocessor output may be unsuitable for actual compilation. The default option is to use ANSI C syntax. For ex- ample, if the -IDIR option is not specified then ANSI specifies that the current working di- rectory will be searched first for user defined include files. Tell the preprocessor not to discard comments. This option is only valid when used in conjunction with the -E option.