--with-gd error on redhat ws3

["Tracey Jackson" <Tracey.Jackson () jwu edu>]

I recently installed snort and acid on a redhat linux ws3 machine and
get the below error when ever I try to use the graph alert data.

 

"PHP ERROR: PHP build incomplete: the prerequisite GD support required
to generate graphs was not built into PHP. Please recompile PHP with the
necessary library (--with-gd)"

 

HELP