[llvm-dev] RFC: Improving license & patent issues in the LLVM community

Daniel Berlin via llvm-dev llvm-dev at lists.llvm.org
Tue Oct 20 09:48:11 PDT 2015


On Tue, Oct 20, 2015 at 9:05 AM, David Chisnall via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> On 20 Oct 2015, at 16:59, Rafael Espíndola <rafael.espindola at gmail.com>
wrote:
>>
>> Does anyone know if the apache 2 is compatible with the various LGPL
versions?
>
> I am not a lawyer, this is not legal advice:
>
> LGPL does not impose any restrictions on the license of things that you
link against it, only that everyone that you distribute the binary to is
able to recompile and relink the LGPL’d part with the result.


This is ly wrong ;-)

It's a common misunderstanding, but it's wrong, and i spend enough time
trying to fix it in acquisitions and elsewhere that it's worth derailing
slightly to point out here:


LGPL imposes the following temrs:
6. As an exception to the Sections above, you may also combine or link a
"work that uses the Library" with the Library to produce a work containing
portions of the Library, and distribute that work under terms of your
choice, *provided that the terms permit modification of the work for the
customer's own use and reverse engineering for debugging such
modifications.*

(emph mine)


So your IOS issue is worse than you think.
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