gnatprep

Preprocessor for Ada source code files (part of the GNAT toolchain). More information: https://gcc.gnu.org/onlinedocs/gnat_ugn/Preprocessing-with-gnatprep.html.

• Use symbol definitions from a file:

gnatprep source_file target_file definitions_file

• Specify symbol values in the command-line:

gnatprep -Dname=value source_file target_file