On Thu, Dec 13, 2018 at 10:41 AM Eli Zaretskii <eliz@gnu.org> wrote:
I'd like to encourage people who build Emacs on GNU/Linux to checkout
and build this branch and report any problems you see.  Please report
these problems using "M-x report-emacs-bug RET", and please CC on the
reports Mohammad Nasirifar <far.nasiri.m@gmail.com>, one of the
Harfbuzz developers who volunteered to help us with this integration.
(You will, of course, need to install or build Harfbuzz on your
system, before building this branch.)

I do have harfbuzz 1.0.3 installed on my system (RHEL 6.8).

How do I build with harfbuzz? Would I need to pass some switch to configure to enable that?

Using my regular build script, I get this in the configure step:

  Does Emacs use -lxml2?                                  yes
  Does Emacs use -lfreetype?                              yes
  Does Emacs use HarfBuzz?                                no                       <-------------
  Does Emacs use -lm17n-flt?                              yes
  Does Emacs use -lotf?                                   yes
  Does Emacs use -lxft?                                   yes