Re: [sage-devel] Re: GMP web sites says Sage relies on GMP

[William Stein]

On Mon, May 17, 2010 at 9:32 AM, Nathan O'Treally <not.r...@online.de> wrote:
> On 17 Mai, 12:09, "Dr. David Kirkby" <david.kir...@onetel.net> wrote:
>> http://gmplib.org/
>>
>> says
>>
>> **Projects using GMP**
>> There are many interesting projects that rely on GMP. Here are a few examples,
>> in alphabetic order:
>>
>> # Sage is a free mathematics software system, which is gradually becoming a
>> viable alternative to non-free computer algebra systems. "
>>
>> That's not true any more.
>
> Well, MPIR is derived from GMP (4.2.1)...

(1) I sometimes build Sage against GMP for testing purposes, and there
is an spkg that does this too.

(2) Remark: Since anyone using GMP could use MPIR, technically nothing
fundamentally relies on GMP.

(3) Getting anything changed at http://gmplib.org is difficult. For
example, that page currently asserts

* "MPIR, a renamed GMP based on an obsolete version of the GMP
sources, maintained by a group of people with funding from Microsoft.
This GMP version uses an old LGPL license (version 2.1), but has
nevertheless taken code from current GMP and downgraded the license
without our authorisation. See e.g., this page were they say "I have
very carefully applied all GMP issued patches through 25/08/2008".
They are still through the University of Washington network
distributing MPIR tarballs with the LGPL 3 code as if they had a LGPL
2 license (2010-05-05)."

I have written to them about 20 times to get this changed. I even
wrote to the FSF about this, and they contacted me, did an audit, and
made a specific list of one single minor item that had to be fixed on
the MPIR website so that we would be in full compliance. We fixed
that weeks ago. Yet still the above completely false statement
remains on the GMP website.

If anybody feels personally annoyed by how http://gmplib.org posts
this false statements, the email addresses you can write to in order
to complain are:

gmp-d...@gmplib.org,
"Torbjorn Granlund" <t...@gmplib.org>,
"license-violation" <license-...@gnu.org>,

-- William


--
William Stein
Professor of Mathematics
University of Washington
http://wstein.org

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[William Stein]

I just want to emphasize, that I'm not encouraging anybody to "harass" anyone.
If you feel that the gmplib.org website is incorrect and being abused,
and care about this, I am asking only that you write a mature and
reasoned email explaining your concerns. That is all.

I'm adding this, because Torbjorn just wrote to me claiming that
asking people to express their views is an international crime:

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To: William Stein <wst...@gmail.com>
Subject: Re: [sage-devel] Re: GMP web sites says Sage relies on GMP
References: <4BF115EC...@onetel.net>
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From: Torbjorn Granlund <t...@gmplib.org>
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Date: Mon, 17 May 2010 19:28:53 +0200
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(William Stein's message of "Mon\, 17 May 2010 10\:21\:08 -0700")
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Now you are going too far, Urging people to harass me is illegal in both
your jurisdiction and in mine.

--=20
Torbj=F6rn