D-BUS API and ABI (was: Re: ANNOUNCE: D-Bus - 0.31 released)

John (J5) Palmieri johnp at redhat.com
Mon Mar 7 15:27:50 PST 2005

On Tue, 2005-03-08 at 10:17 +1100, Daniel Stone wrote:
> On Mon, Mar 07, 2005 at 04:43:51PM -0500, John (J5) Palmieri wrote:
> > Get it while its hot.  Be on the bleeding edge.  D-BUS 0.31 has been
> > released featuring a much cleaned up API and fantastic new type system
> > along with updated python, mono and glib-bindings.  This is an unstable
> > release pit stop on the road to 1.0.  Make your apps compatible or be
> > left in the dust.
> Just out of curiousity, what's the status of 0.31 with regards to the
> ABI?  0.23.1, at least (a point release!) broke the ABI by removing
> a function (renaming it), and didn't bump the soversion -- everyone
> with stuff built against libdbus who used that symbol had to rebuild.
> And it silently broke, because packaging systems don't take ABI changes
> without soversion bumps into account.
> Which is a shame, because that's a *point* release, so I was really
> hoping to be able to integrate it, especially for all the Mono fixes.
> Despite the fact that D-BUS is still in beta and all that, there's still
> a published library, and lots of people still use that.  And the API
> cleanup is worthy, but can we please batch the entire lot for one big
> cleanup in a later release where we can bump the major soversion?  I
> mean, D-BUS as it stands is unpackageable.  And while it's nice to say
> that it's in beta, that doesn't make apps like HAL, Beagle, etc, just
> magically go away.
> Also, breaking API in point releases is generally considered poor form.
> -d

Well, it has been stated in the past that API/ABI stability would not be
on the plate until 1.0.  That being said I made it easy to bump the
sonames in configure.in and have done so for this release.  Note that
this release massively breaks API/ABI from the 0.2x series but is
considered to have most if not all of the major changes that will be in
the 1.0 release. 

John (J5) Palmieri
Associate Software Engineer
Desktop Group
Red Hat, Inc.
Blog: http://martianrock.com

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