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From marekm@amelek.gda.pl Thu Nov 11 11:54:55 2004
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Date: Fri, 29 Oct 2004 23:38:08 +0200
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From: Marek Michalkiewicz <marekm@amelek.gda.pl>
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To: E. Weddington <ericw@evcohs.com>
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Cc: avr-libc-dev@nongnu.org
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Subject: Re: [avr-libc-dev] avr-libc license audit
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On Fri, Oct 29, 2004 at 02:56:02PM -0600, E. Weddington wrote:
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> The problem is that the original LICENSE file said that avr-libc is
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> "Modified BSD license (no advertising clause)"
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> There are many files in there that are *not licensed this way*, only
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> having 2 clauses and not including the "no advertising" clause.
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Poorly defined operator precedence ;) - it was meant to be read as:
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(no (advertising clause))
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((no advertising) clause)
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where the "advertising clause" is the one which was removed from the
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original (4-clause) BSD license. The problem (full-page ads, etc.)
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is explained in http://www.gnu.org/philosophy/bsd.html .
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Some time ago, I chose the 3-clause BSD license as a fairly simple,
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liberal and standard one. Later, BSD people made it even simpler by
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removing another clause (I guess it was a problem for someone again...
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licensing issues are evil), and I have no problem with that, so I
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started using the 2-clause license in newer files (and probably
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forgot to update some of the older ones).
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> The "no advertising" is only marginally restrictive:
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> * Neither the name of the copyright holders nor the names of
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> contributors may be used to endorse or promote products derived
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> from this software without specific prior written permission.
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> It only restricts the user of avr-libc so they don't go off and say
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> "Marek Michalkiewicz endorses the use of this product! :-) Buy it!".
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> This is a fairly reaonable restriction for users.
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No problem for me either way - it was never my intent to add more
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restrictions, as they only make things more complicated for everyone
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(especially if one program contains code with different licenses: you
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have to check each license if it is compatible with all others, grrr...).
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> So, then do I have your permission to change the files that you hold a
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> copyright on to include the "no adverstising" clause? If yes, could you
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Yes. But, you could just as well do the reverse: ask authors who
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hold copyright on files with 3-clause license if they agree to
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remove that one clause (I agree, if I forgot to remove that clause
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from any of the files I wrote). It's up to you. Sorry for not
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speaking up about this earlier (I'm overworked as usual).
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