[Numpy-discussion] Licensing question

Sturla Molden sturla at molden.no
Mon Aug 6 05:20:03 EDT 2012

But the Fortran FFTPACK is GPL, or has the licence been changed?



Sendt fra min iPad

Den 3. aug. 2012 kl. 07:52 skrev Travis Oliphant <travis at continuum.io>:

> This should be completely fine.    The fftpack.h file indicates that fftpack code came from Tela originally anyway and was translated from the Fortran code FFTPACK. 
> Good luck with your project. 
> -Travis
> On Aug 2, 2012, at 3:44 PM, Damon McDougall wrote:
>> Hi,
>> I have a question about the licence for NumPy's codebase. I am currently
>> writing a library and I'd like to release under some BSD-type licence.
>> Unfortunately, my choice to link against MIT's FFTW library (released
>> under the GPL) means that, in its current state, this is not possible.
>> I'm an avid NumPy user and thought to myself that, since NumPy's licence
>> is BSD, I'd be able to use some of the source code (with due credit, of
>> course) instead of FFTW. Is this possible? I mean, can I redistribute
>> *PART* of NumPy's codebase? Namely, the fftpack.c file? I was under the
>> impression that I could only redistribute BSD source code as a whole and
>> then I read the licence more carefully and it states that I can modify
>> the source to suit my needs. I consider 'redistributing a single file
>> and ignoring the other files' as a 'modification' under the BSD
>> definition, but maybe I'm thinking too wishfully here.
>> Any information on this matter would be greatly appreciated since I am a
>> total code licence noob.
>> Thank you.
>> P.S. Yes, I know I could just release under the GPL, but I don't want to
>> turn people off of packaging my work into a useful product licensed
>> under BSD, or even make money from it.
>> -- 
>> Damon McDougall
>> http://damon-is-a-geek.com
>> B2.39
>> Mathematics Institute
>> University of Warwick
>> Coventry
>> West Midlands
>> CV4 7AL
>> United Kingdom
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