[physfs] 7z Archiver updated / LZMA SDK 4.57

[Dennis Schridde]

Am Mittwoch, 23. Januar 2008 18:57:10 schrieb Dennis Schridde:
> Am Mittwoch, 23. Januar 2008 06:09:04 schrieb Ryan C. Gordon:
> > >> current lzma directory with the official 4.57 sdk sources?
> > >
> > > - Replace physfs/lzma/ with lzma457/C/
> > > - Move docs from lzma457/ to physfs/lzma/doc/
> > > - Move lzma457/lzma.txt to physfs/lzma/LZMA-LICENSE.txt, add your
> > > header and rip off the non-license part.
> >
> > I ended up changing this a little...the sdk is now in subversion as it
> > existed in the original distribution, including pieces we don't use, and
> >   nothing was moved around or changed...my reading of their license is
> > that the sdk can be statically linked to closed-source software, as long
> > as the source distribution remains unmodified, otherwise it has to abide
> > by the LGPL's linking requirements. I've even moved my licensing
> > comments out of lzma.txt and into trunk/LICENSE.txt.
> >
> > Since it's feasible for someone to use PhysicsFS in a close source
> > application, it's for the best that we don't impose the additional LGPL
> > restrictions by default by moving things around.
> >
> > (Yeah, yeah, I know, the intent of the license suggests they wouldn't
> > care, but having spent the last few months fighting with lawyers about
> > UnrealEngine3 middleware, you learn to ignore intent and only deal with
> > the specific wording of licenses...)
>
> I've been dealing a lot with the wording of licenses, attached readme's,
> and the "intention of the copyright holder", too...
> Can't say it was fun, and in the end is all up to the judges anyway, I
> guess. ;) (As long as you don't have everything written from the owner...)
>
> > At any rate, it should hopefully make upgrading to newer SDKs easier in
> > the future anyhow.
> >
> > I've updated CMakeLists.txt and lzma.c to reflect the original SDK file
> > layout. It builds here, but I haven't tested it; let me know if I broke
> > something.
>
> The conflicts were very minor, so I guess it's basically the same I had,
> which means it should work. Will test it further later, after exam-time...
>
> --Dennis

PS:
Thanks for you effort and for including this into PhysFS!
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