4.11 has no file_opts.h
6.4 has ../file_opts.h
11.0-CURRENT & 10.1-p6 moved it down to /usr/src/contrib/file/src/file_opts.h

*** 12.2-STABLE/src/contrib/file/src/file_opts.h	Wed Oct 14 16:55:05 2020
--- generic-new/src/contrib/file/src/file_opts.h	Wed Oct 14 17:36:58 2020
***************
*** 36,41 ****
--- 36,42 ----
      " TEST         exclude TEST from the list of test to be\n"
      "                               performed for file. Valid tests are:\n"
      "                               %e\n")
+ 		/* JJLATER do we need to append ctm to list ? */
  OPT_LONGONLY("exclude-quiet", 1, 0,
      " TEST         like exclude, but ignore unknown tests\n", OPT_EXCLUDE_QUIET)
  OPT('f', "files-from", 1, 0,