Yeah, Steven. That was the problem. Thank you!

On Tue, Jul 18, 2017 at 6:17 PM, Noam Postavsky <npostavs@users.sourceforge.net> wrote:
On Tue, Jul 18, 2017 at 10:09 AM, Jean-Christophe Helary
<jean.christophe.helary@gmail.com> wrote:
>
>> On Jul 18, 2017, at 22:43, Stefan Monnier <monnier@iro.umontreal.ca> wrote:
>>
>>> I'm sure someone else will give you a more definitive answer, but IIRC,
>>> the macOS build needs to be installed before it works right.
>>> I.e. you need "make install".
>>
>> Ha, found it: look at the nextstep/INSTALL file
>
> Indeed. I just tried with just "make" and I got what Ital described, so it is not connected to the environment variable issue that I mentioned...

I believe #27645 proposes to remove this quirk.
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=27645