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January 2012

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2012.01.22 16:53 "update on tiff 4.x in debian", by Jay Berkenbilt
2012.01.22 17:17 "Re: update on tiff 4.x in debian", by Bob Friesenhahn
2012.01.22 18:18 "Re: update on tiff 4.x in debian", by Bob Friesenhahn
2012.01.22 18:51 "Re: update on tiff 4.x in debian", by Olivier Paquet
2012.01.22 19:33 "Re: update on tiff 4.x in debian", by Bob Friesenhahn
2012.01.22 19:56 "Re: update on tiff 4.x in debian", by Bob Friesenhahn
2012.01.22 19:54 "Re: update on tiff 4.x in debian", by Bob Friesenhahn
2012.01.22 20:42 "Re: update on tiff 4.x in debian", by Bob Friesenhahn
2012.01.23 01:48 "Re: update on tiff 4.x in debian", by Jay Berkenbilt
2012.01.23 05:24 "Re: update on tiff 4.x in debian", by Tom Lane
2012.01.23 14:04 "Re: update on tiff 4.x in debian", by Edward Lam
2012.01.23 14:53 "Re: update on tiff 4.x in debian", by Bob Friesenhahn
2012.01.23 15:13 "Re: update on tiff 4.x in debian", by Bob Friesenhahn
2012.01.23 15:52 "Re: update on tiff 4.x in debian", by Jay Berkenbilt
2012.01.23 16:26 "Re: update on tiff 4.x in debian", by Tom Lane
2012.01.23 17:05 "Re: update on tiff 4.x in debian", by Olivier Paquet
2012.01.23 17:50 "Re: update on tiff 4.x in debian", by Bob Friesenhahn
2012.01.24 23:24 "Re: update on tiff 4.x in debian", by Jay Berkenbilt
2012.01.25 00:11 "Re: update on tiff 4.x in debian", by Bob Friesenhahn
2012.01.25 14:28 "Re: update on tiff 4.x in debian", by Jay Berkenbilt
2012.01.28 17:38 "Re: update on tiff 4.x in debian", by Jay Berkenbilt
2012.01.28 19:59 "Re: update on tiff 4.x in debian", by Bob Friesenhahn
2012.01.23 17:48 "Re: update on tiff 4.x in debian", by <pullmoll@t-online.de>
2012.01.23 18:15 "Re: update on tiff 4.x in debian", by Bob Friesenhahn

2012.01.23 17:50 "Re: update on tiff 4.x in debian", by Bob Friesenhahn

On Mon, 23 Jan 2012, Tom Lane wrote:

> Jay Berkenbilt <ejb@ql.org> writes:
>> I will get to this as soon as I can, but I will probably want to get
>> someone from the debian release team to look at it.  Maybe Tom Lane can
>> look at it too -- he probably has more experience with this than I do.
>
> Sorry, I don't know much of anything about versioned symbols.  My
> reaction TBH is that it's a big mistake to be changing 3.9.x's ABI
> at this late date, and that if this ships it will be a blocker to
> ever again updating libtiff 3.9 in existing RHEL branches.

The 3.9.x ABI would not change by default.  If a distribution chooses 
to enable versioned symbols then it also needs to take responsibility 
to assure that all software is built consistently and that there is no 
way to introduce binaries which depend on the former ABI.  This is 
most easily performed at beginning of a major baseline cycle, which 
typically occurs only every few years.  Of course, the software could 
simply be updated to work with libtiff 4.0 instead.

Debian did previously jump through all these hoops in order to add 
versioned symbols to old IJG JPEG 6b so that it could introduce IJG 
JPEG 7 and IJG JPEG 8.

Bob
-- 
Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/