Set of preproc macros to be used by rpkg utilility. They are designed to dynamically generate certain parts of rpm spec files. You can use those macros also without rpkg by: $ cat <file_with_the_macros> | preproc -s /usr/lib/rpkg.macros.d/all.bash You can also source /usr/lib/rpkg.macros.d/all.bash into your bash environment and then you can experiment with them directly on your command-line. See content in /usr/lib/rpkg.macros.d to discover available macros. Please, see man rpkg-macros for more information.
See also: rpkg.