Why not make it easy in yourself and use the pre-canned APACHE 2 + Perl 5.8 + mod_perl 1.99 + PHP 4.3 + MySQL 4 + ... you can find at Apachefriends?

I tried it for Apache 1 and it worked very nice. The only thing I changed was installing ActiveState Perl 5.6 afterwards in its own directory, so I got the PPM-interface working which came with the Komodo-IDE (it refuses to work with anything else but a genuine ActiveState Perl).

CountZero

"If you have four groups working on a compiler, you'll get a 4-pass compiler." - Conway's Law