Ensure AOT apps for macOS ARM run correctly (dart compile exe)

[a-siva]

Ensure dart2native apps generated for macOS ARM target work correctly on that platform.

[alexmarkley]

@a-siva I would like to propose that there are two separate issues here:

1. Future versions of dart2native should produce native code on Apple Silicon (and preferably "Universal" binaries) dart2native produces a Mach-O x86_64 binary even on Apple Silicon / DTK #43476

2. Current versions of dart2native should produce x86_64 binaries that work correctly under the Rosetta translation environment: dart2native produces non-functional (crashing) binaries on Apple Silicon / DTK #43477

[mit-mit]

@mkustermann you duped both of #43476 and #43477 into this, but it seems reasonable to have a different timeline for Rosetta compatibility (most urgent) and full support for universal binaries? Or were you thinking we'd just got to universal binaries directly?

[mkustermann]

@mit-mit I'm going through unlabeled issues and was aware that @a-siva has open bug for dart2native regarding Apple Silicon already (which I assume covers both aspects), which is why I merged it into here.

Apologies if I misunderstood the intend here. @a-siva If you want to track those issues separately, please re-open #43476 and #43477

[alexmarkley]

@mkustermann I agree with the general principle of keeping the issue queue clean and organized.

FWIW I think Rosetta support for existing binaries is pretty different from Universal binary support. They probably have very different priorities and work efforts associated with them. But that's just my guess. 😄

[bdkjones]

Hi everyone. It's been a few months since this was opened. Has any progress occurred? The milestone is still ambiguous and Apple Silicon Macs are about 30-45 days from being in the wild (if Apple's "by the end of the year" statement holds true). Thanks!

[gkjpettet]

Where are we with this? Three new Apple Silicon Macs are shipping next week and the MacBook Air is Apple's most popular computer.

[bdkjones]

It’s been 5 months since anyone updated this issue and several projects are blocked on it. Apple Silicon is here.

Development takes time, but surely someone at Google/Dart has a plan they can share? Just knowing an ETA and that someone is handling this would be very helpful.

[mraleph]

(@a-siva assigning to you to reflect that you are driving this)

In general before we can fix dart2native we should be able to produce a dart/dart_precompile_runtime binary for Mac OS ARM64 target - and we currently can't because we are blocked on https://bugs.fuchsia.dev/p/fuchsia/issues/detail?id=67614

[bdkjones]

@a-siva It looks like Rosetta might be going away in some parts of the world with the next update to macOS: https://twitter.com/SteveMoser/status/1366904041243041794?s=20

It would be nice if Dart could get on board before that happens.

[vsmenon]

Same q as #42773 - @a-siva @mit-mit - are we comfortable punting this to the next milestone? I think we discussed that since we're blocked.

[franklinyow]

@a-siva Should this move out of April? Which Milestone we're looking at?

[a-siva]

This works now when we do local builds, marking as fixed. We have #42773 tracking the broader issue of building/testing the new configuration on the bots.