libX11.so.6 Not located
You require to install the libX11 plan :
$ rpm -qf /usr/lib/libX11.so.6 libX11-1.3.1-3.fc13.i686
$ yum -y install libX11
Another point though : if you do not recognize just how to locate and also install a collection plan, like share why you are attempting to compile an item of software program that is formally packaged for Fedora 13 in one of the most current variation?
$ yum info gpicview Available Packages Name : gpicview Arch : x86_64 Version : 0.2.1 Release : 3.fc13 Size : 93 k Repo : fedora Summary : Simple and fast Image Viewer for X URL : http://lxde.sourceforge.net/gpicview/ License : GPLv2+ Description : Gpicview is an simple and image viewer with a simple and intuitive interface. : It's extremely lightweight and fast with low memory usage. This makes it : very suitable as default image viewer of desktop system. Although it is : developed as the primary image viewer of LXDE, the Lightweight X11 Desktop : Environment, it only requires GTK+ and can be used in any desktop environment.