--with-expat=/usr: Uses system installed
expat. If you have installed expat and do not use this switch, the
apache installation may overwrite some files from the expat installation.
--enable-mods-shared=all: We want modules
to be compiled and used as Dynamic Shared Objects
(DSOs) so they can be included and excluded from the
server using the run-time configuration directives.
--enable-ssl: Use this switch
to create the mod_ssl
module and enable SSL support.