# -D "build_number --with-build-number=123"
# -bb /usr/src/redhat/SPECS/openvswitch-xen.spec
+%if %{?openvswitch_version:0}%{!?openvswitch_version:1}
+%define openvswitch_version 1.5.90
+%endif
+
+%if %{?kernel_name:0}%{!?kernel_name:1}
+%define kernel %(rpm -qa 'kernel*xen-devel')
+%define kernel_name %(rpm -q --queryformat "%%{Name}" %{kernel} | sed 's/-devel//' | sed 's/kernel-//')
+%define kernel_version %(rpm -q --queryformat "%%{Version}-%%{Release}" %{kernel})
+%define kernel_flavor xen
+%endif
+
%define xen_version %{kernel_version}%{kernel_flavor}
# bump this when breaking compatibility with userspace