[QGIS-Developer] QGIS and Qt 6: A proposal

[Nyall Dawson]

On Tue, 7 Jul 2020 at 07:21, Tim Sutton <tim at kartoza.com> wrote:

> For the macOS side of this, I wonder if things are quite so urgent. I think the first ARM (‘Apple Silicon’) based machines are going to be out this year, but it will be a two years before their product line is fully transitioned. macOS 11, as I understood things, will ship with Rosetta which will do a direct binary translation to ARM byte code, even if the binary does not ship with ARM binaries (e.g. as a Universal Binary). In the last episode of the ubuntu podcast (https://ubuntupodcast.org/2020/07/02/s13e15-vertical-chopsticks/) they discussed it a bit - probably worth a listen… I heard that the Rosetta overhead is around 25% on current development environments - probably the overhead will be reduced as the release approaches. Anyway, its good you are planning for the future, but I don’t think that macIS users are going to be left high and dry with upcoming changes…..hope I am note wrong :-)
>

That's fair enough. I still think we should permit Qt 6 builds as soon
as possible, for all the other reasons I listed :)

I'd also like to point out that 25% is quite a drop in performance (I
get pissed off whenever I see my system performance drop a few percent
due to the latest Intel incompetence!!). I can only imagine that our
mac users will be quite...  ummm... "demanding" that we get native
support available for their platform as soon as this hardware retails!