make -C tools/testing/selftests TARGETS="net" TEST_PROGS=udpgro.sh TEST_GEEN_PROGS="" run_tests
make: Entering directory '/home/virtme/testing-1/tools/testing/selftests'
make[1]: Entering directory '/home/virtme/testing-1/tools/testing/selftests/net'
  CC       ncdevmem
[01m[Kncdevmem.c:34:10:[m[K [01;31m[Kfatal error: [m[Knetdev-user.h: No such file or directory
   34 | #include [01;31m[K"netdev-user.h"[m[K
      |          [01;31m[K^~~~~~~~~~~~~~~[m[K
compilation terminated.
make[1]: *** [../lib.mk:211: /home/virtme/testing-1/tools/testing/selftests/net/ncdevmem] Error 1
make[1]: Leaving directory '/home/virtme/testing-1/tools/testing/selftests/net'
make: *** [Makefile:192: all] Error 2
make: Leaving directory '/home/virtme/testing-1/tools/testing/selftests'
xx__-> echo $?
2
xx__->