Description:

XFree86-libs contains the shared libraries that most X programs
need to run properly. These shared libraries are in a separate package in
order to reduce the disk space needed to run X applications on a machine
without an X server (i.e, over a network).

If you are installing the X Window System on your machine, you will need to
install XFree86-libs. You will also need to install the XFree86 package,
the XFree86-75dpi-fonts package or the XFree86-100dpi-fonts package
(depending upon your monitor's resolution), the Xconfigurator package and
the X11R6-contrib package. And, finally, if you are going to be developing
applications that run as X clients, you will also need to install
libxfree86-devel.