Some flavors of Unix require that the ranlib(1)
program be run against a library, before that library can be used.
For such systems, this confRANLIB macro is
correctly defined for you to be ranlib. For
other flavors of Unix, the ranlib(1) program is
not necessary. For such systems this confRANLIB
macro is defined to be echo.
In the rare circumstance that the default definition is wrong for
your site, you can change it by defining this