bug#32352: 27.0.50; build error

[Eli Zaretskii]

> Date: Fri, 03 Aug 2018 15:07:00 +0900
> From: Katsumi Yamaoka <yamaoka@jpl.org>
> Cc: 32352@debbugs.gnu.org
> 
> On Fri, 03 Aug 2018 07:48:07 +0200, Markus FFM wrote:
> > build emacs from sources.
> > error messages:
> [...]
> > Directory-local variables error: (invalid-read-syntax #)
> > Error: (void-variable =)
> 
> This sometimes happens to me, too :).  Try `make bootstrap'.

No need to bootstrap: just rename .dir-locals.el and re-run "make",
then rename the file back.

Would someone please look into this annoying problem?  It seems to
happen every time files.el and/or dired.el is changed.