Hi Dima, On 28 Nov., 13:40, Dima Pasechnik <dimp...@gmail.com> wrote: > On Monday, 28 November 2011 04:42:49 UTC+8, Simon King wrote: > > My starting point is C-MeatAxe version 2.2.4. This version is not the > > most recent, but it is the *only* version that is licenced under GPL > > 2+. In fact, apart from the licence, it is identic with 2.2.3. I > > tested that the linear algebra in it is as fast as in the more recent > > versions. > > In the latest 2.4.13 version README says: > The MeatAxe is free software. You may use, copy and distribute it freely > under > the terms of the GNU General Public Licence. See the file COPYING for > details. > > (there is no file COPYING, though :-)) > > I don't see why this is not good enough...
I was not aware that the COPYING was missing in version 2.4.13. Is it really legally possible to understand the words "under the terms of the GNU General Public Licences" as "you may choose what version of GPL you like"? However, COPYING there in 2.2.4, and explains: The C Meat-Axe is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version. whereas in 2.2.3 it just gives GPL 2. Anyway. I did try 2.4.13 at some point, but the linear algebra wasn't faster than in 2.2.4. Even if using 2.4.13 was possible, I'd still tend to stay with 2.2.4, since it would be a considerable amount of work to port all my changes and additions from 2.2.4 to 2.4.13: Virtually all frequently used function names have changed. Best regards, Simon -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
