netcdf-decoders-5.0.0-5.fc13.src is missing BuildRequires: udunits-static [...] https://fedoraproject.org/wiki/Packaging:Guidelines#Packaging_Static_Libraries_2 If a library you depend on only provides a static version your package can link against it provided that you BuildRequire the *-static subpackage. Packagers in such a situation should be aware that if a shared library becomes available, that you should adjust your package to use the shared library.
Couple things: - This is a dead package. - There is no udunits-static package/provides in F13.
https://fedorahosted.org/rel-eng/ticket/3840