redhat8 php4.3.0pre2 apxs problem

I am a Linux newbie, so any help will be appreciated. I am upgrading the version of PHP to the latest and greatest (4.3.0pre2), I have removed the version that came with RH8 (4.2.3?) using the RH unistall, then I followed the install instructions that came with PHP, httpd -l looked fine so I ran configure as follows: ./configure --with-mysql --with-apxs I then get an error saying that it cant find APXS. I have searched and the only file I can find with that name is an HTML document. Some research I did seemed to indicate this comes with Apache development which I have tried locating unsuccessfully. Where do I find APXS? Thanks in advance for any help. Gareth