-Requires: libxerces-c-3_1 = %{version}
-Provides: xerces-c-devel = %{version}
-Obsoletes: xerces-c-devel
+Requires: libxerces-c-3_1 = %{version}-%{release}
+Provides: xerces-c-devel = %{version}-%{release}
+Obsoletes: xerces-c-devel < %{version}-%{release}