[sdlsound] tremor and MAD?
odradek at videotron.ca
Mon Jan 13 16:35:17 EST 2003
I double-checked and it's not clear if Tremor uses the "Modified BSD
license" as described by the FSF. If so, it would be compatible with the
Le lun 13/01/2003 à 16:20, Marc Lavallée a écrit :
> I'm not sure to understand...
> MAD license is GPL, Tremor license is BSD.
> According to http://www.gnu.org/philosophy/license-list.html
> MAD is compatible with the GPL, Tremor is not.
> Since SDL_Sound is LGPL, does it reverse the situation?
> (Tremor being compatible with the LGPL while MAD is not?)
> Le lun 13/01/2003 à 04:38, Glenn Maynard a écrit :
> > IANAL.
> > On Mon, Jan 13, 2003 at 04:17:54AM -0500, Ryan C. Gordon wrote:
> > > > Would it be possible to use the Tremor and MAD libraries in SDL_sound?
> > > > It would boost the performance on StrongArm processors.
> > >
> > > I wrote to the MAD developers for a GPL exemption, but never heard back.
> > LGPL libraries are GPL-compatible, so they can link to GPL libraries; no
> > exemption is needed. http://www.gnu.org/philosophy/license-list.html
> > The trouble that comes up is that only GPL-compatible code can link to
> > GPL'd code (even indirectly, through another library), so if MAD is
> > linked to SDL_sound, the extra permissions granted by the LGPL are
> > unavailable, since using them would violate MAD's license. However,
> > SDL_sound is still LGPL and the permissions can still be used if MAD
> > isn't linked (eg. SMPEG or MPGLIB is used instead).
> > If the GPL library being linked by an LGPL library was not optional--if
> > the only way to compile the lib is to use the library--then there's no
> > choice, and the program is effectively GPL (unless a replacement is
> > written). In other words, MAD can't replace SMPEG and MPGLIB.
> > --
> > Glenn Maynard
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