59241484_an_RPM_package___FedoraProject__Reads
[Stage] %install [Writes] %_buildrootdir [Action] This reads the files underneath the build directory %_builddir and writes to a directory underneath the build root directory %_buildrootdir. The files that are written are the files that are supposed to be installed when the binary package is installed by an end-user. Beware of the weird terminology: The build root directory is not the same as the build directory. This is often implemented by running "make install". [Reads] 
%_builddir
% _ s o u r c e d i r
% _ b u i l d d i r
% _ b u i l d r o o t d i r
How to create an RPM package - FedoraProject