3.11.5.3 Switches

-fdump-ada-spec

Generate Ada spec files for the given header files transitively (including all header files that these headers depend upon).

-fdump-ada-spec-slim

Only generate Ada spec files for the header files specified on the command line.

-fada-spec-parent=`unit'

Specifies that all files generated by -fdump-ada-spec are to be child units of the specified parent unit.

-C

Extract comments from headers and generate Ada comments in the Ada spec files.