Hi Derek,

Thank you for your report.

So far, I have been unable to reproduce the issue you are facing.  It
looks like no Makefile was generated in unit/atf-src after ./configure
was run (or perhaps that the Makefile was generated incorrectly).  To
make any further progress on this, I am going to need:

  - complete output of your ./configure invocation,
  - contents of /root/bind-9.9.11/config.log after ./configure is run,
  - contents of /root/bind-9.9.11/unit/atf-src/Makefile, if it exists.

In any case, running ./configure without "--with-atf" may be able to
work around the problem, though note that doing that would prevent you
from running unit tests after the build completes.

Please also note that six of the ./configure switches you used in your
invocation are not supported by BIND 9.9.11 (I expect ./configure to
have informed you about that in the summary it produces).