==========
build_clang - FAILED


ld.lld: error: undefined symbol: phy_ethtool_get_link_ext_stats
>>> referenced by linkstate.c:138 (/home/nipa/net-next/wt-1/build_clang/../net/ethtool/linkstate.c:138)
>>>               vmlinux.o:(linkstate_prepare_data)

ld.lld: error: undefined symbol: phy_ethtool_get_phy_stats
>>> referenced by stats.c:172 (/home/nipa/net-next/wt-1/build_clang/../net/ethtool/stats.c:172)
>>>               vmlinux.o:(stats_prepare_data)
make[3]: *** [../scripts/Makefile.vmlinux:77: vmlinux] Error 1
make[2]: *** [/home/nipa/net-next/wt-1/Makefile:1225: vmlinux] Error 2
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [/home/nipa/net-next/wt-1/Makefile:251: __sub-make] Error 2
make: *** [Makefile:251: __sub-make] Error 2
ld.lld: error: undefined symbol: phy_ethtool_get_link_ext_stats
>>> referenced by linkstate.c:138 (/home/nipa/net-next/wt-1/build_clang/../net/ethtool/linkstate.c:138)
>>>               vmlinux.o:(linkstate_prepare_data)

ld.lld: error: undefined symbol: phy_ethtool_get_phy_stats
>>> referenced by stats.c:172 (/home/nipa/net-next/wt-1/build_clang/../net/ethtool/stats.c:172)
>>>               vmlinux.o:(stats_prepare_data)
make[3]: *** [../scripts/Makefile.vmlinux:77: vmlinux] Error 1
make[2]: *** [/home/nipa/net-next/wt-1/Makefile:1225: vmlinux] Error 2
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [/home/nipa/net-next/wt-1/Makefile:251: __sub-make] Error 2
make: *** [Makefile:251: __sub-make] Error 2