GD Library Issue

[mastermind2004]

I've recently set up a new server with CPanel/WHM. When I attempt to compile Apache with PHP and the GD Library I get this error:

configure php-4.3.9...(--prefix=/usr --with-xml --enable-bcmath --enable-calendar --enable-ftp --with-gd --with-jpeg-dir=/usr/local --with-png-dir=/usr --with-xpm-dir=/usr/X11R6 --enable-magic-quotes --with-mysql --enable-discard-path --with-pear --enable-sockets --enable-track-vars --enable-versioning --with-zlib).... . . . . . . . . . . . Done 
configure: error: libXpm.(a|so) not found.

I checked, and found the libXpm to be installed in the /usr/X11R6/lib directory. Any suggestions on how to clear this up would be greatly appreciated, as this is holding up the launch of this server, and costing me quite a lot.
Edit: I'm Using CentOS 3.3, with WHM 9.9.3 and CPanel 9.9.6-C9. Any other specs can be given if needed.

[mastermind2004]

Anyone have any suggestions? I've tried using /scripts/easyapache, it still gives me the same error. I have done a search of the forums, and tried all the suggestions found there, but nothing helps. I can give more full logs of the Apache build if you need. This problem is getting very annoying, as it makes several apps that my clients use non functional.

[mastermind2004]

Issue Resolved. After importing the CentOS Public Key, things were smooth sailing.

[kctalk]

How do you use the CentOS key?

[anand]

How do you use the CentOS key?

Download the rpm-gpg key from one of their mirrors and use rpm --import to import the key.

[mastermind2004]

Yeah, that's exactly it. I found it at mirror.centos.org.