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Date: Thu, 6 Mar 2008 18:53:55 -0800
From: Jeremy Chadwick <koitsu@freebsd.org>
To: Adriano dos Santos Fernandes <adrianosf@uol.com.br>
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Cc: freebsd-hackers@freebsd.org
Subject: Re: Versioned symbols
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On Thu, Mar 06, 2008 at 11:28:39PM -0300, Adriano dos Santos Fernandes wrote:
> I want to make versioned symbols as they work in Linux, but I had no 
> success with FreeBSD.

This seems quite relevant, specific to RELENG_7.  (Said feature isn't
available in earlier releases):

http://www.freebsd.org/releases/7.0R/relnotes.html

The rtld(1) runtime linker now supports ELF symbol versioning using GNU
semantics. This implementation aims to be compatible with symbol
versioning support as implemented by GNU libc and documented in
http://people.redhat.com/~drepper/symbol-versioning and LSB 3.0. Also,
dlvsym() function has been added to allow lookups for a specific version
of a given symbol.

-- 
| Jeremy Chadwick                                    jdc at parodius.com |
| Parodius Networking                           http://www.parodius.com/ |
| UNIX Systems Administrator                      Mountain View, CA, USA |
| Making life hard for others since 1977.                  PGP: 4BD6C0CB |