The BR line for qt-devel reads: BuildRequires: qt-devel => 4.4 While it should read: BuildRequires: qt-devel >= 4.4 (=> vs. >=). On a F-12 machine that caused it not to enforce the qt-devel requirement on a rebuild of the doxygen-1.7.2-1.f15 package.
fixed (in rawhide)