How do you enable GD in PHP when installing via RPM?

We are working on a client’s sever that has PHP running without GD. We would like to enable GD support in PHP on that machine. What is the most straightforward way to enable GD. Is there a way to do it via RPM?

Thanks!

Update:

Currently running:

RedHat Enterprise Linux Server version 5.3
Using RPM

Typically in most modern packages this is done by installing the php-gd package with your package manager.

for RHEL 5.3 try:

yum install php5-gd

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