lzma (Re: HEADS UP: upgrading ImageMagick to 6.4.0-6)

[Brooks Davis]

On Mon, Apr 21, 2008 at 11:05:42PM +0400, Andrew Pantyukhin wrote:
> On Tue, Apr 15, 2008 at 10:07:54PM -0500, Brooks Davis wrote:
> > On Tue, Apr 15, 2008 at 10:35:30PM -0400, Mikhail Teterin wrote:
> > > ???????? 15 ??????? 2008 10:21 ??, Brooks Davis ?? ????????:
> > > > Sadly, the author's licensing terms will limit the adoption of lzma.
> > > > The BSD license is well established as the most restrictive acceptable
> > > > license for successful, widely adopted compression schemes.
> > 
> > I wouldn't necessicairly be opposed to seeing support for tar.lzma files
> > in bsd.port.mk, but I don't think lzma has a signficant future if the
> > licensing policy remains as is (i.e. complex and not clearly defined in
> > the source files).
> 
> == qouth lzma.txt ==
> SPECIAL EXCEPTION #3: Igor Pavlov, as the author of this code,
> expressly permits
>  
>  you to use code of the following files: 
>  BranchTypes.h, LzmaTypes.h, LzmaTest.c, LzmaStateTest.c,
>  LzmaAlone.cpp, 
>  LzmaAlone.cs, LzmaAlone.java
>  as public domain code. 
> ====================
> 
> Without a more careful look, it sounds like enough to integrate
> lzma in libarchive.

That's well hidden (DOC/lzam.txt in the tarball).  Someone should
produce some sort of lzma-lite distribution that only does the basics.
Then this could be a practical option.

-- Brooks
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