On 9/24/07, William Stein <[EMAIL PROTECTED]> wrote:
> Regarding (1), I'll define the copyright holders of the Sage *library*
> to be the names
> listed in the output of the following command (with some slight
> editing, e.g., since
> copyright statements for octave are in doctests):
>
> $ cd SAGE_ROOT/devel/sage
> $ grep -r -i Copyright * > a.txt
Should you actually grep for author lines as well (even with some context!)
E.g c_lib/mp{n,z}_pylong.c read
* Author: Gonzalo Tornaría <[EMAIL PROTECTED]>
* Date: March 2006
* License: GPL v2
(that's even explicit about license, altough no copyright word in the
whole file) and my name also appears in a few other places as author,
altough no explicit license.
Forget about me, but one could worry whether there are more authors
with no copyright statement (but clear author statements, thus clear
copyright hold).
Something I noticed while grepping is that some files have a heading
claiming GPL license with no version number which, as mentioned above,
seem to effectively mean any version of GPL. OTOH, some files (notably
sage/libs/pari/gen.pyx) have no copyright NOR license statement.
Besides, sage-2.8.5.spkg has no clear "top-level" copyright notice
(there is a copy of GPL v2 in directory c_lib, and an (unversioned)
statement in file PKG-INFO.)
> These are the people that both contributed code to the core library and
> took the time to actually explicitly put their names as copyright holders
> on files (in most cases this means they were the first to create the given
> file). They contributed code under the assumption that their code is
> GPL v2 only, so permission should be obtained before changing the
> license on their code to GPL v2 or later.
I contributed under that assumption. I don't like GPL v2 or later, I
might be closer to GPL v2 or v3 than that. Overall, I agree with
Joel's comments earlier in this thread.
For the record, I don't think I would have contributed to BSD or MIT
licensed sage.
Gonzalo
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