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Re: License for the Cwd module

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Ken Williams
November 29, 2004 18:16
Re: License for the Cwd module
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I'm about to release another beta of the PathTools distribution, with 
the following copyright chunk in each .pm file:


Copyright (c) 2004 by the Perl 5 Porters.  All rights reserved.

This program is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.


For the file, I'm also adding this paragraph:

Portions of the C code in this library are copyright (c) 1994 by the
Regents of the University of California.  All rights reserved.  Please
see the source code in F<Cwd.xs> for the licensing details of that

In other words, whatever copyright I can claim on this code I'm ceding 
to p5p, and there's some portion of the code that looks like Berkeley 
owns it.

Please do let me know if I need to change something before the non-beta 


On Nov 29, 2004, at 7:00 PM, Ken Williams wrote:

> Hi,
> Currently the Cwd module[1] has no copyright/license statement in it, 
> and I'm not sure it ever has.  Since it's always been a core module, 
> with no independent CPAN life until I gave it one, I think the 
> intention was for it to be licensed under the same terms as perl 
> itself.
> However, there's XS code in there that comes from OpenBSD 2.9, put 
> there by Jarkko, and which bears the standard commenting about 
> "Copyright (c) 1994 The Regents of the University of California, all 
> rights reserved, blah blah blah."
> So, is this a problem?  And what *is* the license for this?  And if 
> it's not "the same as perl itself", then how can we include it in the 
> core?
> This issue was brought to my attention by Radosław Zieliński, who 
> would like to create an RPM package for the PLD Linux distribution, 
> and wants to know what to put in the License field.
>  -Ken
> [1]

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