how do I re-compile Apache2 with 'pre-fork' or 'worker' module ?

[kadoudal]

I am willing to use a recent Apache module for my Rails apps...
during installation I got the follwoing warning.... and I wonder how I can recompile Apache2 without disturbing my psa installation ? any link to some detailed info ?
thanks a lot

here is the log warning ..
------
WARNING: Apache doesn't seem to be compiled with the 'prefork' or 'worker' MPM

Passenger has only been tested on Apache with the 'prefork' and the 'worker'
MPM. Your Apache installation is compiled with the 'itk' MPM. We recommend
you to abort this installer and to recompile Apache with either the 'prefork'
or the 'worker' MPM.

 

[IgorG]

http://kb.odin.com/en/823

 

[Marco Cristofanilli]

Can I use apache2-mpm-worker on Debian?