16.1 Using gnatprep
To call gnatprep use
$ gnatprep [switches] infile outfile [deffile]
where
switches- is an optional sequence of switches as described in the next section.
infile- is the full name of the input file, which is an Ada source
file containing preprocessor directives.
outfile- is the full name of the output file, which is an Ada source
in standard Ada form. When used with GNAT, this file name will
normally have an ads or adb suffix.
deffile- is the full name of a text file containing definitions of
symbols to be referenced by the preprocessor. This argument is
optional, and can be replaced by the use of the -D switch.