[PD] Legal restrictions for apps

Simon Wise simonzwise at gmail.com
Thu Oct 3 09:34:00 CEST 2013

On 03/10/13 03:17, Tony Hillerson wrote:
> I agree that it seems like there's there's no prohibition on distributing
> LPGL objects

You must distribute them under the LGPL, and that requires making their source 
code available, just like the GPL.

However LGPL programs/libraries can be linked to from any program, unlike GPL 
code which does not allow distribution unless all the sources including that of 
any code which links to it are also distributed with compatible rights but not 
necessarily obligations.

Distributing an LGPL binary you must still distribute its source as well (in one 
of the ways described in the license). Then you may distribute it under the LGPL 
license. Apple does not allow GPL software on its appstore. To distribute a 
program on the appstore you must give Apple a license to distribute it, in 
return they collect license fees and pay you part of what they collect, but they 
are not willing to agree to the GPL and are not willing to agree to make the 
sources available under those conditions.

You are not in a position to give Apple any license to distribute expr except 
the LGPL, and certainly cannot give them the right to distribute it without them 
agreeing to the obligations regarding expr source code, which would seem to put 
it in the same situation as GPL programs.

But is expr part of libpd??


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