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Date: Sat, 12 Jun 2004 14:37:01 -0700 (PDT)
From: Doug White <dwhite@gumbysoft.com>
To: Chuck Swiger <cswiger@mac.com>
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References: <pan.2004.06.12.09.01.59.52173@babysnakes.org>
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cc: freebsd-stable@freebsd.org
cc: Haim Ashkenazi <haim@babysnakes.org>
Subject: Re: keeping my freebsd secure...
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On Sat, 12 Jun 2004, Chuck Swiger wrote:

> > also, if the PNG library having vulnerabilities (as it is now on my
> > system) and I update the ports and compile it, do I have to update all the
> > ports or only this one (will php break if I won't upgrade it)?
>
> That depends on whether the newer version of PNG retains shlib
> backwards-compatibility with the older version.  Good software tends to be
> fine, other software where the authors are less concerned about retaining
> compatibility with previous versions may require one to recompile dependent
> ports as well.

Note that portupgrade hoards old shared library versions in
/usr/(local/)?lib/compat, so as long as
the library version changes, you won't get bit by these types of
incompatible upgrades.

-- 
Doug White                    |  FreeBSD: The Power to Serve
dwhite@gumbysoft.com          |  www.FreeBSD.org