CHK     include/linux/version.h
  Building modules, stage 2.
  MODPOST
*** Warning: "unregister_tcf_proto_ops" [net/sched/cls_u32.ko] undefined!
*** Warning: "register_tcf_proto_ops" [net/sched/cls_u32.ko] undefined!
*** Warning: "tcf_exts_dump" [net/sched/cls_u32.ko] undefined!
*** Warning: "tcf_exts_dump_stats" [net/sched/cls_u32.ko] undefined!
*** Warning: "tcf_exts_change" [net/sched/cls_u32.ko] undefined!
*** Warning: "tcf_exts_validate" [net/sched/cls_u32.ko] undefined!
*** Warning: "tcf_exts_destroy" [net/sched/cls_u32.ko] undefined!