+%if %{defined repo}
+
+# Building for a repository use the proper build-sysbuild package
+# to determine which kernel-devel packages should be installed.
+BuildRequires: %{_bindir}/kmodtool
+%{!?kernels:BuildRequires: buildsys-build-%{repo}-kerneldevpkgs-%{?buildforkernels:%{buildforkernels}}%{!?buildforkernels:current}-%{_target_cpu}}
+
+%else
+
+# Building local packages attempt to to use the installed kernel.