- -p, --process <src> <dst> process file <src> into <dst> for distribution,
- only non-source files can be processed with -p
+ -p, --process <type> <src> [<dst>]
+ process file <src> into <dst> for distribution,
+ <type> is 'makefile', 'configure', 'non-source'
+ or 'source' and defines the type of <src>