[gnutls-dev] gnutls versioning again

[Dmitry V. Levin]

On Mon, Feb 19, 2007 at 08:14:58PM +0100, Andreas Metzler wrote:
> On 2007-02-18 Dmitry V. Levin wrote:
> > On Sun, Feb 18, 2007 at 05:56:30PM +0100, Andreas Metzler wrote:
> [...]
> > > However
> > > it seems to be a rather big hammer. And the problem is old, I think I
> > > am missing something _big_, the majority of libraries does
> > > not use symbol versioning,
> 
> > Probably because symbol versioning is not portable.
> > Most of libraries which use symbol versioning are maintained by
> > GNU/Linux developers.
> 
> > > rpm based distributions must already have
> > > some different way to handle adding of symbols to libraries and
> > > generating the necessary dependencies.
> 
> > Besides of the the method we are talking about, there are no reliable
> > methods I'm aware of.

pkg-config versioned requirementes in applications also may help,
but these requirements require efforts from application maintainers and
therefore not reliable.

> > rpm based distributions usually follow reactive
> > strategy: when application package fails to run with some library
> > package, they just rebuild application package with verioned dependency on
> > library package which is known to work nice with this application package.
> [...]
> 
> I don't understand how /that/ could help. The problem as I see it is
> that the dependencies of the program on the library are unversioned and
> therefore allow installing the program with a too old version of the
> library. Rebuilding would not change the dependency and would not fix
> the problem.

They do add verioned requirement by hand and rebuild.


-- 
ldv
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