Re: libpthread shared library version number

On Thu, Nov 02, 2006 at 08:09:48AM -0600, Brooks Davis wrote:
> On Thu, Nov 02, 2006 at 08:25:37AM -0500, Daniel Eischen wrote:
> > On Thu, 2 Nov 2006, Ruslan Ermilov wrote:
> > 
> > >On Wed, Nov 01, 2006 at 04:07:38PM -0800, Maxim Sobolev wrote:
> > >>Guys,
> > >>
> > >>I have noticed that libpthread shared library version number in 6-STABLE
> > >>and 7-CURRENT is the same (.2), which causes all threaded application
> > >>compiled for 6-STABLE to segfault when executed on 7-CURRENT system,
> > >>unless libpthread.so.2 is replaced with with its 6-STABLE version which
> > >>in turn will create problems with threaded apps compiled for 7-CURRENT.
> > >>IMHO we should increase version number in 7-CURRENT, so that it is in
> > >>the line of what we have for other system libraries.
> > >>
> > >>Any objections?
> > >>
> > >Last time we bumped them was right before 6.0-RELEASE; we did it
> > >both in HEAD and RELENG_6.  We certainly should be bumping them
> > >all again closer to a 7.0-RELEASE, when the RELENG_7 is about to
> > >be created.  If we bump some majors now, and break APIs later but
> > >still before a release (we are allowed to do it in -CURRENT), we
> > >would have to bump them again before a release, and because it's
> > 
> > No, in -current we force people to recompile everything.  Plus
> > we have symbol versioning in the libraries most likely to be
> > effected.  If we bump, we should enable symbol versioning at
> > the same time.
> 
> I agree with the last part, but I think we need to bump sooner rather
> than later because we need to support binary only applications compiled
> against 6.x (remember, we're not really supporting anything else so
> smart vendors are going to build against it).
> 
Hmm, bumping not versioned libraries *now* and not bumping them
again at pre-release would work, but doing it without also bumping
"to be versioned" libraries is IMO pointless.  And if we bump all
of them now, we'll have to bump some of them again when versioning
is turned on by default.  I think more important would be to know
the plans regarding the symbol versioning in 7.0-RELEASE; if the
plan is to have them versioned, then I think we should sync shlib
majors bumping with this change.


Cheers,
-- 
Ruslan Ermilov
ru_at_FreeBSD.org
FreeBSD committer