[CMake] a cmake install question

[luxInteg]

Greetings,

A cmake install question:-

When installing say an unknown package (one  where only installation prefix is 
described)  appart from such  $CMAKE_INSTALL_DIRECTORY (or prefix),  are there 
'generic' swithes to fix other directories such as 
--sysconfdir  (normally /etc) --mandir (usually /usr/share/man) and --
localstatedir (usually /var) ?

Or does one have to   make these settings  either on the command line or in 
the package;  and  in any case  how so?

thanks in advance
luxInteg