[webkit-dev] Using C++20 in WebKit

[Yusuke Suzuki]

That’s awesome! Thank you for your work!

-Yusuke

> On Mar 9, 2022, at 4:29 PM, Alex Christensen via webkit-dev <webkit-dev at lists.webkit.org> wrote:
> 
> Apple and Sony are finishing updating our build infrastructure to Visual Studio 2022, and we are considering requiring it to build WebKit starting next week.  If anyone has a reason to delay further, please let me know on this list or directly.
> 
>> On Jan 24, 2022, at 1:43 PM, Alex Christensen via webkit-dev <webkit-dev at lists.webkit.org> wrote:
>> 
>> Ok.  We won’t raise the minimum CMake version for all of WebKit right now then, just on Windows when we start requiring VS2022.
>> 
>>> On Jan 22, 2022, at 1:44 PM, Carlos Alberto Lopez Perez via webkit-dev <webkit-dev at lists.webkit.org> wrote:
>>> 
>>> On 22/01/2022 01:51, Alex Christensen via webkit-dev wrote:
>>>> While we’re updating things, is there any objection to updating the
>>>> minimum version of CMake required?  Right now it is 3.12, which was
>>>> released in 2018.  Does anyone have any limitations we should consider
>>>> when picking a new minimum version?
>>>> 
>>> 
>>> Yes.
>>> 
>>> CMake is one of the core dependencies for GTK and WPE ports, so the
>>> policy of dependencies applies [1]
>>> 
>>> In practical terms that means that we should support the version of
>>> CMake shipped by Debian 10, which is CMake 3.13 until at least 2022-08-14.
>>> 
>>> However, If the purpose of raising the version is to take advantage of
>>> the new Visual Studio generator then I don't think raising the minimum
>>> version is needed.
>>> 
>>> As far as I know you can take advantage of newer CMake features (like
>>> support for a newer generator) without needing to raise the minimum
>>> version required.
>>> 
>>> So if you have a newer version of CMake you can simply pass the flag
>>> -G"Visual Studio 17 2022" (or similar). Raising the minimum version
>>> required of CMake is not needed to use a newer CMake generator, using it
>>> can be made optional for those that want (and can) use it.
>>> 
>>> 
>>> [1] https://trac.webkit.org/wiki/WebKitGTK/DependenciesPolicy
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