Il manque sans doute les bibliothèques pour le développement: le paquetage imlib-devel.
Le site
http://www.fedoratracker.org/ permet de rechercher aisément les paquetages.
Une recherche aboutit aux éléments suivants:
Repository: yum -
http://download.fedora.redhat.com/pub/fedora/linux/core/3/i386/os/
Description: The header files, static libraries and documentation needed for developing Imlib applications. Imlib is an image loading and rendering library for X11R6.
Install the imlib-devel package if you want to develop Imlib
applications. You will also need to install the imlib package.