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Date: Thu, 25 Jul 2013 22:08:59 -0400
From: Rich Felker <>
Subject: Re: Preparing to release 0.9.12

On Thu, Jul 25, 2013 at 05:38:51PM -0700, Isaac wrote:
> > The so versioning will not help for C++ related things. The most
> > important use case I had in mind is that, package managers that use
> > soversions for automatic dependencies, can insert proper "require
> > version XXX or later of this .so". That is, if we built with musl X, we
> > can detect that from .so, and record it. And later ensure that musl X-1
> > will not satisfy the newly built package's dependencies. Especially
> > important when we are introducing new symbols.
> On Debian, there's the "symbols" system; this lists all symbols with the 
> version they appeared in, and the tools look through the symbols and 
> find the lowest version providing all the symbols.
> But as a standard rule, _added_ symbols _do_ _not_ call for a new SONAME,
> since they do not break the ABI.

Good point. In that case, it sounds like it would be wrong to have the
SONAME of musl reflect the version, no?


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