AC_ARG_WITH

Hi,

I'm beginning with in autoconf and I want to use the configure style to
implement my project.

I'm trying to inform the compiler that when the user do something like this:
./configure --with-libfoo=/home/thiago/lib

The compiler link the makefile with the library that the user have
specified, or if is not specified it will try to find in the
path.

How can I do this?!

Best regards,
--
Thiago Mello