clarification requested in egcs installation

[Andrew Koenig <ark at research dot att dot com>]

On http://egcs.cygnus.com/install/configure.html, you describe the
--with-local-prefix and --with-gxx-include-dir options, saying that their
use is normally not needed.  Unfortunately, the description is not quite
clear, at least to me.

Do these options say that egcs should install its headers in the named
directories instad of the normal places, or do they say that egcs should
look there for the g++ header files during installation?

For example, on my machine, g++ is installed in /usr/gnu instead of
/usr/local.  Does that mean that when I install egcs, I should say
--with-gxx-include-dir=/usr/gnu/include ?  What about --with-local-prefix ?
There isn't even a /usr/local directory on this system, so what should I use?

I'd appreciate a little more explanation....



						Regards,

						Andrew Koenig