We weren’t satisfied by the default Apache installation with which Mac OS X comes, we wanted our own installation which we can update when we want and that was not depended on or affected by Apple’s Security Updates.
The compilation and installation of Apache is relatively simple. Download the latest source from apache.org, and with a few statements you can compile and install it.

Before you start you might want to turn of the default Apache installation that might be running on your Mac. To make sure that it isn’t running open “System Preferences” and open the “Sharing Preference” pane and to stop Apache by unchecking “Personal Web Sharing”.

Please note the difference in the documentation regarding the different versions of Mac OS X. If you are not sure if your machine is capable of 64 bits mode open a Terminal session type in “httpd -V” and the output will tell you.