+%define ipfw_release %{kernel_version}.%{pl_kernel_taglevel}
+%else
+# with the stock kernel
+# this line below
+#%define ipfw_release %( rpm -q --qf "%{version}" kernel-headers )
+# causes recursive macro definition no matter how much you quote
+%define percent %
+%define braop \{
+%define bracl \}
+%define kernel_version %( rpm -q --qf %{percent}%{braop}version%{bracl} kernel-headers )
+%define kernel_release %( rpm -q --qf %{percent}%{braop}release%{bracl} kernel-headers )
+%define kernel_arch %( rpm -q --qf %{percent}%{braop}arch%{bracl} kernel-headers )
+%define ipfw_release %{kernel_version}.%{kernel_release}
+%endif
+
+%define release %{ipfw_release}.%{taglevel}%{?pldistro:.%{pldistro}}%{?date:.%{date}}