On 08/06/2017 08:41 AM, Gerd Petermann wrote:
> 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.
Yes, hunting down past contributors is a problem with relicensing.
Alternatively GPL-3 (v3 only) sources must be kept out of mkgmap &
splitter, because that introduces the license incompatibility with the
many GPL-2 (v2 only) sources.
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