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[mkgmap-dev] License issue in mkgmap & splitter source: GPL-2 (v2 only) incompatible with GPL-3 (v3 only)

From Gerd Petermann gpetermann_muenchen at hotmail.com on Sun Aug 6 07:41:52 BST 2017

Hi Bas,

okay, I see no problem to change to GPL-2+ for sources written by me, but if
that also means we need permissions from authors who did not post anything
since many 
years you can probably forget this. A quick check in mkgmap sources shows
297 java sources with
GPL-3 or GPL-2+ licence and 273 with GPL-2 only. Most of the latter (236)
are from Steve Ratcliffe or have no copyright section.

Still a few show (inactive) copyright holders :
Copyright 2009 Toby Speight
Copyright (C) 2010 Jeffrey C. Ollie
Copyright 2009 Clinton Gladstone
Copyright (C) 2009 Christian Gawron



Sebastiaan Couwenberg wrote
> Hi Gerd,
> On 07/27/2017 09:07 AM, Gerd Petermann wrote:
>> I am not sure what to do here. The splitter sources in question are
>> copies or modified copies of sources in mkgmap.
>> Why do they cause problems in splitter, but not in mkgmap?
> They are problematic in mkgmap too, they have simply not been noticed
> there before.
>> The source
>> src/uk/me/parabola/mkgmap/reader/MapReader.java
>> was changed recently but the copyright info is very old. Why does it
>> cause problems now?
> Because the new file in splitted showed up in my license & copyright
> review for the changes since SVN r548 (the previous revision in Debian).
> Ideally all the files in mkgmap and splitter are relicensed to GPL-2+
> (v2 or later) to have the most widest license compatibility. Only the
> copyright holders can change the license, so this is something you,
> Steve and the other copyright holders need to consent to.
> Kind Regards,
> Bas
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