Supported NDK versions

[Volker Krause]

On Friday, 11 January 2019 02:22:17 CET Aleix Pol wrote:
> On Thu, Jan 10, 2019 at 9:34 PM Volker Krause <vkrause at kde.org> wrote:
> > Hi,
> > 
> > with NDK 17 GCC got deprecated, with 18 (from Sep 2018) it even got
> > entirely
> > removed, and with it the corresponding C++ STL libs. And the current Qt
> > SDK
> > (5.12) only ships with clang-based binaries. Do we still want to support
> > GCC-
> > based NDKs? If so for how long? If no, does it make sense to make a hard
> > cut
> > now, and switch everything to the newer NDKs and the Clang-based
> > toolchain?
> > 
> > I'm wondering as we are hitting limits with the wide NDK and SDK range we
> > currently try to support, e.g.
> > https://phabricator.kde.org/R1007:3c86b3900aafa374389dee74ec83ae17488d521d
> > is
> > needed to build with NDK 18/SDK 28 and Qt 5.12, but it breaks binary
> > factory
> > and any other older setup.
> > 
> > Note that this is only about the compile-time requirements, this has no
> > effect
> > on still supporting older API levels for the resulting apps at runtime,
> > that
> > we definitely want to keep.
> > 
> > Regards,
> > Volker
> 
> I'd say it doesn't make a whole lot of sense to support anything other than
> r18.

I agree, certainly for everything we distribute. And with Google pushing these 
updates I doubt there is a relevant external user base that is using KDE 
building blocks and insists on ancient NDKs.

> I've been working on it on this patch (okay, it's been sitting for a while,
> but I can see to get it applied).
> https://phabricator.kde.org/D18173

Nice! Looks good to me as far as I can follow Docker stuff. I can at least 
confirm for the framework subset used by KDE Itinerary that Clang, NDK 18 and 
Qt 5.12 work just fine. The previous OpenSSL build also still works here, but 
I haven't checked if Qt 5.12 might also accept a newer version meanwhile.

Regards,
Volker

> We can keep a legacy image for Qt 5.11 with gcc and this one as official
> for Qt 5.12 while we transition.
> 
> Aleix

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