macOS Big Sur status report

Jacob Carlborg doob at
Tue Sep 15 10:08:05 UTC 2020

On Sunday, 13 September 2020 at 19:51:14 UTC, Guillaume Piolat 
> Hello,
> I'd like to post here to get you in touch with the future 
> support of macOS Big Sur.

Thanks for looking into this.

> 1. Context
> Future Mac comes with "Apple Silicon" CPU that are natively 
> arm64.
> On these system (out end of 2020), you can run both x86_64 and 
> arm64 executables.
> As of today, a D program works unchanged under macOS Big Sur 
> (11.0). It is emulated. The new processors are really fast and 
> it's surprisingly painless.

I would like to add, for clarity, that macOS Big Sur runs 
natively on existing Macs which runs x86-64. D works without any 
problems, out of the box on these systems. This post is 
specifically about the new Apple Silicon, ARM64 (AArch64).

> I'm just unaware which druntime needs to be touched: the LDC 
> one or upstream?

As much as possible upstream. Hopefully it shouldn't be that much 
since it works on iOS. There might be some required changes to 
Phobos as well.

/Jacob Carlborg

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