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

[Ludovic Hirlimann]

On 7/6/20 11:21 PM, Tim Sutton wrote:
>
>> 3. We have some big hurdles approaching on which we'll be completely
>> dependent on upstream Qt. Probably the most important of these being
>> Apple's move to their own CPU architecture. If we don't move to Qt
>> 6.0, then QGIS is DOA when the new Apple hardware starts selling.
>
> 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 :-)
>
The transition from PPC to x86 took at least 4 years on Apple's Side,
with stuff running in roseta. There is a performance hit, but things
that were PPC were runable.


Ludo

-- 
Administrateur Système    
https://3liz.com solutions libre de Cartographie


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