qt 6.5.0 removes support for macOS 10.14 and macOS 10.15

[Chris Jones]

Hi,

Just to add, it would also be useful to know a bit on the reasons for 
dropping the older OSes, what exactly are the tehcnical reasons for it, 
as within macports we have a number of build options available to us, 
like newer builds of the compilers which can be used instead of the 
Xcode versions, that help us support a lot of ports on systems way older 
than upstream for them officially support.

cheers Chris

On 05/04/2023 2:02 am, John Hoyt wrote:
> Renee,
> 
> Thanks for the pointers - I'll take a look with fresh eyes tomorrow.  
> I've added a todo list in the PR, as it's very much a WIP - although I 
> have been able to successfully build all subports locally (still have to 
> test and attempt to build on arm).
> 
> Just a heads up - Qt6.5 seems to be a little different than the work 
> we've done on Qt 6.2.  Some of the qt5 based CMake updates seem to no 
> longer be necessary (and in some cases now break things forcing 
> incorrect paths).
> 
> Regards,
> John
> 
> 
> 
> On Tue, Apr 4, 2023 at 8:39 PM Renee Otten <ottenr.work at gmail.com 
> <mailto:ottenr.work at gmail.com>> wrote:
> 
>     hi John,
> 
>     Thanks for working on that! Regarding the support of older macOS
>     versions: The Qt5 PortGroup and ports are the example on how this
>     was done for Qt5 and likely on how to do the same for Qt6.
> 
>     I likely will not have time to do much work on this myself but will
>     look at the PR and see if I can provide some help…
> 
>     Best,
>     Renee
> 
>>     On Apr 4, 2023, at 8:32 PM, John Hoyt <john.hoyt at gmail.com
>>     <mailto:john.hoyt at gmail.com>> wrote:
>>
>>     
>>     I've started working on updating the qt6 port to qt 6.5.0 (see
>>     https://github.com/macports/macports-ports/pull/18186
>>     <https://github.com/macports/macports-ports/pull/18186>).
>>
>>     Qt 6.5.0 removed support for macOS 10.14 and 10.15, only
>>     supporting macOS 11 and newer whereas qt 6.2 supports macOS >= 10.14.
>>
>>     Any suggestions on how to handle the deprecation of macOS 10.14
>>     and 10.15?
>>
>>     Thanks,
>>     John
>