Date: Thu, 22 Jan 2009 15:08:49 -0900 From: Mel <fbsd.questions@rachie.is-a-geek.net> To: freebsd-questions@freebsd.org Cc: Robert Huff <roberthuff@rcn.com>, Novembre <novembre@gmail.com> Subject: Re: old cruft after source upgrading --- clean install? Message-ID: <200901221508.49573.fbsd.questions@rachie.is-a-geek.net> In-Reply-To: <3b47caa90901221541r467869e9hbe882380b9e69316@mail.gmail.com> References: <3b47caa90901211835o7eae77d9v2bead5e01dcf14af@mail.gmail.com> <18807.58863.983982.191053@jerusalem.litteratus.org> <3b47caa90901221541r467869e9hbe882380b9e69316@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Thursday 22 January 2009 14:41:30 Novembre wrote:
> Also, what are all these unreferenced libraries (according to libchk) doing
> on my machine (see the
> previous post)?
Unreferenced can mean "no program or other library uses this library", but can
also mean "libchk was unable to find a program that uses this library, yet a
program/library might still need it through runtime loading". If you're
interested in the technical details, see dlopen(3).
All libchk can determine is whether a library is linked against, not whether
it uses some construct to dynamically load a library upon request.
That said:
- if libfoo.so.2 is said to be unreferenced
- AND libfoo.so.3 (or higher) exists
- it is 99.9% safe to assume libfoo.so.2 can be deleted.
Also, for the list libchk gives concerning not anything in /usr/local,
execute:
cd /usr/src
make delete-old-libs
You should've done that right after you rebuilt your ports [1], but you can
still do it.
Last but not least, since you're doing a *minor* version upgrade, it's not
strictly necessary to rebuild all your ports. Keeping them up-to-date is not
a bad idea, but unless it's explicitedly mentioned in /usr/src/UPDATING, no
library in FreeBSD is version bumped, so that installed applications break.
This only applies to *major* version upgrades.
[1] It's possible to do after source upgrade and before port rebuild, but not
if you use portupgrade (use portmaster instead), since it needs ruby which is
linked to the old 6.x libraries.
--
Mel
Problem with today's modular software: they start with the modules
and never get to the software part.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200901221508.49573.fbsd.questions>