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Subject: Re: CDB map for postfix
From: Wietse Venema (wietseporcupine.org)
Date: Wed Sep 13 2000 - 09:35:46 CDT

Matthias Andree:
> Michael Tokarev <mjttls.msk.ru> writes:
>
> > Ok. It is really unclean from "public domain" statement in source.
> > Does someone interested in having cdb in postfix at all?
> > It seemed to be that this is only one map (yet) that can be easily
> > implemented inside postfix itself, not having to require any external
> > support libraries.
>
> I never noticed Postfix required external support libraries. It surely
> does, it depends on libc, on libdb or libdbm, whatever else a specific
> system may consider standard linkage, still gdbm and db come with most
> Linux distributions, Solaris seems to come with dbm.

Oh, there are a few extensions such as SASL, PCRE and TLS that
involve not only code inside Postfix but also a dependency on a
library that may or may not already be present on the system. But
those libraries are not part of Postfix, and would not be bundled
with Postfix source code.

If I understand you correctly, you question the wisdom of bundling
(for example) cdb source code with Postfix source code.

Well it depends.

If there is a usable reference implementation, then people should
use that, like we do with SASL and so on.

If the reference implementation of (for example) cdb would not be
good enough, someone can build an alternative reference implementation.

Even then it is not clear to me that the alternative reference
should have to ship with Postfix. If the code is good enough, it
would eventually become part of the standard library kit of the
open source UNIX systems. This would be an argument to not bundle
(for example) cdb library code with Postfix source.

        Wietse