[Samba] cutting corners (4.10.2 on el7.6)

[vincent at cojot.name]

Hi All,

I'm not well versed in the samba code base so I'm asking here.. :)
I only wanted to run a small AD/DC for my SOHO (1 spouse, 3 kids, 1 dog & 1 cat).

I've managed to build 4.10.2 on rhel7.6 with gnutls-3.3.29 and python-2.7.
(this required an updated cmocka, which in turn required an updated cmake) 
but...

building without testsuite and without clustering (ctdb) allows 
samba-4.10.2 to compile with this old python (2.7.5) and gnutls (3.3.29)

During the configure/rpmbuild phase, I noticed those messages:
------------------------------------------
No gnutls support for AEAD encryption
Building without DMAPI support: no suitable DMAPI library found
WARNING: ans1Parser hasn't been found! Please install it (e.g. libtasn1-bin)
------------------------------------------

I wonder if these might be 'impactful'.. Would someone enlighten me on 
what purpose those serve? (i.e: is it a show-stopper?)
Also, I've had to build without 'clustering' (ctdb) support.. is that a 
big issue?

Thanks,

Vincent

Refs:
http://nova.polymtl.ca/~coyote/dist/samba/samba-4.10.2/RHEL7