Either compiled in or shared libraries work pretty much the same.
Agree with Michael on the security aspects. It may therefore be easier
to get it in a trusted binary distro, and fall back to building it
yourself on a box with the same arch and copying those files over as a
last resort.
I primarily use Debian so apt provides binary distros.
Also, you may want to look at 2.2, especially if you want to use any
kind of webserver caching. I have written a document on load balancing
on 2.2 (on debian, but will work the same for RHEL), which takes
advantage of 2.2's updated proxy modules, using mod_proxy_ajp/
mod_proxy_balancer, here:
http://developer.sparkred.com/confluence/display/ATGDC/Load+Balancing+ATG+instances+on+jBoss+via+Apache+mod_proxy
Have done this a couple times on client sites, and it has some
noticeable performance improvements over the old 2.0/mod_jk setup.