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Date: Fri, 8 Apr 2005 16:13:31 -0700
From: Kris Kennaway <kris@obsecurity.org>
To: Warner Losh <imp@FreeBSD.org>
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Subject: Re: cvs commit: src UPDATING
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On Fri, Apr 08, 2005 at 11:02:23PM +0000, Warner Losh wrote:

> | +	(b) Old ports and packages can sometimes have subtle problems with
> | +	    newer libraries.  portupgrade is recommended where possible after
> | +	    the upgrade.

portupgrade -f, possibly with -P (use packages where possible) for
efficiency.  The main issue is if you have old (e.g. 4.x) packages
installed on your 5.x system, and then later upgrade a port that
provides a library used by the 4.x software, i.e. bring your system
into a mix of 4.x software and 5.x libraries.  The 4.x software may no
longer work since the new library can depend on 5.x features and other
5.x libraries.

> | +	(c) Perl based ports may also have the wrong version of perl hard
> | +	    coded into the headers.  Spamassassin is one such port.

This and other pitfalls are documented in /usr/ports/UPDATING, which
should be cross-referenced here somewhere.

Kris
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