[Interest] QML vs Electron

[Mike Krus]

> On 7 Aug 2018, at 14:31, Nikos Chantziaras <realnc at gmail.com> wrote:
> 
> On 07/08/18 16:04, alexander golks wrote:
>> Am Tue, 7 Aug 2018 16:00:22 +0300
>> schrieb Nikos Chantziaras <realnc at gmail.com>:
>>> On 07/08/18 01:19, Sylvain Pointeau wrote:
>>>> On Mon, Aug 6, 2018 at 11:56 PM Giuseppe D'Angelo <dangelog at gmail.com
>>>> <mailto:dangelog at gmail.com>> wrote:
>>>>> [...]
>>>>> Out of curiosity, what prevented you from going with LGPL Qt?
>>>> 
>>>> On desktop it is clear but on mobile, there was no clear statement if we
>>>> have the rights or not.
>>>> Seems like LGPL is not friendly with the various stores.
>>> 
>>> It's fine on Android, since Qt for Android uses dynamic linking by
>>> default. On iOS you only get static linking right now, and I'm not sure
>>> if you can build Qt for iOS yourself and configure it for dynamic
>>> linking, and whether Apple now allows dynamically linked iOS apps. The
>>> solution of making re-linkable object files available for iOS to comply
>>> with the LGPL is not suitable for everyone. And it's a useless solution
>>> anyway, unless people jailbreak their Apple devices so that they can
>>> sideload apps. Even though it satisfies LGPL requirements on your part,
>>> it doesn't on Apple's part. So you end up in a situation where people
>>> can claim that Apple does not have the right to distribute your
>>> application. And that would still apply even if you used dynamic linking.
>>> 
>>> But in any case, Android seems fine when using LGPL libraries, since a)
>>> Qt is linked to dynamically, and b) Android officially supports sideloading.
>> One could also just deliver the closed source object files for relinking.
>> this satisfies LGPL, too, doesn't it?
> 
> It was already addressed in my post. It seems to satisfy LGPL requirements on your part, but not on Apple's part (because they don't allow the re-linked application to run due to their DRM.)
given all the appropriate project setup and compiled object code (.o, .a, even shared lib files), a user signed up to the free Apple Developer should in theory be able to link another version of Qt into a final executable, codesign it and run it on his device. Would be a real pain to setup and maintain though.

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--
Mike Krus | mike.krus at kdab.com | Senior Software Engineer
KDAB (UK) Ltd., a KDAB Group company
Tel: UK Office +44 1625 809908   Mobile +44 7833 491941
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