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Posted to java-user@lucene.apache.org by Sergii Kabashniuk <sk...@codenvy.com> on 2015/09/19 17:31:15 UTC
SloppyMath license
Hello
Right now I'm working on approval to use lucene-core in Eclipse projects.
One of the things that worry Eclipse "Intellectual property team" is that
SloppyMath.java
class has unusual license. I mean may be it fits Apache 2 license
requirements, but potentially it can be a source of licensing problems. For
instance lucene-core 5.2.1 is approved to use in Eclipse projects but
without this class. So we need to repackage lucene-core and remove
SloppyMath from it.
My question is it possible to move this class out from lucene-core? I found
that lucene-spatial3d (correct me if I'm wrong) can be close by spirit to
this module.
Sergii Kabashniuk
Re: SloppyMath license
Posted by Robert Muir <rc...@gmail.com>.
call it public domain, call it attribution-only, whatever you like.
there is nothing incompatible with Apache 2, fdlibm was also used by
apache harmony for its math code.
On Sat, Sep 19, 2015 at 12:33 PM, Earl Hood <ea...@gmail.com> wrote:
> On Sat, Sep 19, 2015 at 11:14 AM, Robert Muir wrote:
>
>> There is nothing unusual about public domain code. If your lawyers do
>> not understand that, tell them to go back to school.
>
> Actually, the code in question is not in the public domain, despite that
> the term "public domain" is in the comments of SloppyMath.java:
>
>
> /* some code derived from jodk: http://code.google.com/p/jodk/ (apache 2.0)
> * asin() derived from fdlibm: http://www.netlib.org/fdlibm/e_asin.c
> (public domain):
> * =============================================================================
> * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
> *
> * Developed at SunSoft, a Sun Microsystems, Inc. business.
> * Permission to use, copy, modify, and distribute this
> * software is freely granted, provided that this notice
> * is preserved.
> * =============================================================================
> */
>
> Nowhere in e_asin.c is it mentioned the file has been released to the
> public domain.
>
> The 1993 block is the actual license from e_asin.c, but examination of
> it indicates that it should be perfectly fine to use in a Apache 2.0
> licensed or non-open-source/free software project. Just leave the
> notice as-is.
>
> If the OP is still concerned, then the OP will have to follow-up with
> the specific legal concern SloppyMath.java allegedly raises. Saying
> there is a licensing concern is of little help without providing
> specifics.
>
> --ewh
>
> P.S. IANAL
>
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Re: SloppyMath license
Posted by Earl Hood <ea...@gmail.com>.
On Sat, Sep 19, 2015 at 11:14 AM, Robert Muir wrote:
> There is nothing unusual about public domain code. If your lawyers do
> not understand that, tell them to go back to school.
Actually, the code in question is not in the public domain, despite that
the term "public domain" is in the comments of SloppyMath.java:
/* some code derived from jodk: http://code.google.com/p/jodk/ (apache 2.0)
* asin() derived from fdlibm: http://www.netlib.org/fdlibm/e_asin.c
(public domain):
* =============================================================================
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
*
* Developed at SunSoft, a Sun Microsystems, Inc. business.
* Permission to use, copy, modify, and distribute this
* software is freely granted, provided that this notice
* is preserved.
* =============================================================================
*/
Nowhere in e_asin.c is it mentioned the file has been released to the
public domain.
The 1993 block is the actual license from e_asin.c, but examination of
it indicates that it should be perfectly fine to use in a Apache 2.0
licensed or non-open-source/free software project. Just leave the
notice as-is.
If the OP is still concerned, then the OP will have to follow-up with
the specific legal concern SloppyMath.java allegedly raises. Saying
there is a licensing concern is of little help without providing
specifics.
--ewh
P.S. IANAL
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Re: SloppyMath license
Posted by Robert Muir <rc...@gmail.com>.
There is nothing unusual about public domain code. If your lawyers do
not understand that, tell them to go back to school.
On Sat, Sep 19, 2015 at 11:31 AM, Sergii Kabashniuk
<sk...@codenvy.com> wrote:
> Hello
> Right now I'm working on approval to use lucene-core in Eclipse projects.
> One of the things that worry Eclipse "Intellectual property team" is that
> SloppyMath.java
> class has unusual license. I mean may be it fits Apache 2 license
> requirements, but potentially it can be a source of licensing problems. For
> instance lucene-core 5.2.1 is approved to use in Eclipse projects but
> without this class. So we need to repackage lucene-core and remove
> SloppyMath from it.
>
> My question is it possible to move this class out from lucene-core? I found
> that lucene-spatial3d (correct me if I'm wrong) can be close by spirit to
> this module.
>
> Sergii Kabashniuk
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