File libgpod-1.0.pc says: Requires: glib-2.0 >= 2.8.0 gobject-2.0 But installing libgpod-devel doesn't install glib2-devel so that libgpod-devel can't be used. You should add Requires: glib2-devel to libgpod.spec, in the %package devel section
Thanks for reporting. It's fixed in libgpod-0.6.0-5.fc10.