net/tor doesn't build for me

[Greg Troxel <gdt%lexort.com@localhost>]

on netbsd-8 amd64, due to

src/lib/version/git_revision.c:15:28: fatal error: micro-revision.i: No such file or directory
compilation terminated.
*** [src/lib/version/libtor_version_testing_a-git_revision.o] Error code 1

sometimes, and sometimes it does.

I notice that gmake is not in TOOLS, and there is perhaps some code in
the tor makefiles to sequence things, that might be gmake code.  I did
build with gmake and that was ok, and have not experimented or read cde
enough to be sure of anything.

Is anyone else seeing this?