Re: [AMBER-Developers] nofftw3 and MKL

From: David A Case <>
Date: Wed, 15 Oct 2014 15:51:41 -0400

On Tue, Oct 14, 2014, Ross Walker wrote:

> Huh? - IANAL but seems to me that since we don't distribute any binaries
> and we require the user to build their own copy of AMBER that by doing so
> - that is manually running ./configure themselves and then typing make
> they are themselves manually linking to FFTW3 and we are not doing
> anything 'automatic' for them so this is probably not an issue.
> Comments?

I don't think you are a lawyer. And I don't think "automatic" vs.
"manual" is really important here. But I'd urge people to read paragraph
4 of the GPLv3 license (in $AMBERHOME/AmberTools/LICENSE; this also
applies to fftw). All we are doing with fftw3 is distributing verbatim
source code, which is explicitly allowed. We never distribute non-source
code (covered by paragraph 6), so basically I think we are fine: remember
that the GPL rights are based on copyright. In this regard, GPLv3 is much
more explicit about what can and should not be done than is GPLv2.


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Received on Wed Oct 15 2014 - 13:00:02 PDT
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