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Re: Bug#154714: not declared dependency on libvorbisfile

On Mon, Jul 29, 2002 at 08:50:34PM +0200, Daniel Kobras wrote:
> On Mon, Jul 29, 2002 at 01:28:05PM -0500, Steve Langasek wrote:
> > On Mon, Jul 29, 2002 at 08:20:05PM +0200, Daniel Kobras wrote:
> > > Building sdl-mixer with vorbis 1.0.0 means linking the lib to a library
> > > with different soname.  Means you ought to change libsdl-mixer's soname
> > > as well.
> > 
> > In a world where insane cascading effects are considered desirable in
> > library packages, sure...

> How to draw the line between libraries deemed worthy enough to start a
> soname cascade, and those that just don't matter?

NO library should be allowed to cause this kind of archive disruption.
The more widely used, the less it should be tolerated.

> We can make sure that no other packages are affected, but still the
> change might break home-brew software.  Do we care?

If people care about this, they should get it right in their packages to
begin with, by use versioned symbols in their libraries -- and not make
dozens of other maintainers dance to rebuild their packages after the
real damage has already been done.  Wasting developer resources in order
to provide a smooth upgrade path for hypothetical third-party software
is NOT in the best interest of our users.

> > Such changes are only necessary when a binary references a library both
> > directly and indirectly (foo-util needs libfoo, libbar; libfoo needs
> > libbar).  Such changes are never necessary when the multiply-referenced
> > library uses versioned symbols.

> Yes, see yesterday's thread about the libpngs.  But as far as I can
> tell, the library in question here doesn't use versioned symbols either.
> It's just that libpng is much more widespread than libvorbisfile.

And there hasn't been any evidence presented yet that libvorbisfile even
needs to provide versioned symbols; I'm aware of no such 'foo-utils'
package linking against libsdl-mixer1.2 and libvorbis0.

Steve Langasek
postmodern programmer

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