…#24420)

Fixes #23784.

This PR might be easiest to review commit-by-commit.

(cherry picked from commit 782cd38)

Fixes #23784.

(cherry picked from commit 284b50c)

This PR is a back port of
782cd38
and
284b50c
into the Xcode 27.0 branch so we can get a cleaner baseline VS .NET 11
Branch

…er versions.

(cherry picked from commit 7dbe221)

Baseline update to **Xcode 27.0 Beta 1**, and raise the iOS/tvOS minimum
deployment target to **15.0**.

This is a follow-up (v2) to #25665, brought in commit-by-commit and with
the additional fixes needed to keep CI green.

## Xcode 27.0 Beta 1 bump

* `XCODE_VERSION` 26.5 → 27.0, plus `XCODE_URL` / `XCODE_DEVELOPER_ROOT`
(`Make.config`).
* `*_NUGET_OS_VERSION` 26.5 → 27.0 for iOS/tvOS/macOS/Mac Catalyst
(`Make.versions`).
* `tools/common/SdkVersions.cs`, `builds/Versions-*.plist.in`,
`eng/Version.Details.{props,xml}`, `mk/xamarin.mk`, the project
templates, and the DevOps variables updated to match.

## Raise the iOS/tvOS minimum deployment target to 15.0

`DOTNET_MIN_IOS_SDK_VERSION` / `DOTNET_MIN_TVOS_SDK_VERSION` 13.0 →
15.0. This has a few cascading consequences:

* **Removed redundant availability attributes.** Every hand-written
`[SupportedOSPlatform ("ios<ver>")]` / `("tvos<ver>")` whose version is
`<= 15.0` became redundant in the manual binding sources. Unlike the
attributes bgen generates (which it strips automatically below the
platform minimum), these literal attributes are emitted verbatim and
made the cecil `ApiAvailabilityTest.AttributeConsistency` test fail.
They've been stripped down to the bare platform marker (e.g.
`[SupportedOSPlatform ("ios13.0")]` → `[SupportedOSPlatform ("ios")]`),
leaving versions `> 15.0` and the macOS/Mac Catalyst attributes
untouched.
* **Minimum test simulator raised to 16.0.** Xcode 27 dropped the
iOS/tvOS 15.x simulator runtimes, so the introspection tests now run
against the 16.0 simulator as the minimum (see below).

## Simulator infrastructure for Xcode 27

* **Download arm64 simulators instead of universal ones.** Xcode 27 no
longer supports x64 simulators, so the universal variant is pointless;
we now explicitly request `-architectureVariant arm64` and drop the
x64-detection logic (`system-dependencies.sh`).
* **Updated simulator device types.** Xcode 27 removed several device
types (e.g. `iPhone-6s`, `iPhone-SE` 1st gen, `Apple-TV-1080p`); the
simulator/device selection now uses still-supported types
(`tests/xharness/SimulatorLoaderFactory.cs`,
`tests/mtouch/MLaunchTool.cs`,
`tests/xharness/Jenkins/TestVariationsFactory.cs`).

## Introspection simulator-availability fixes

Running against the 16.0 simulator surfaced several APIs declared
available at an early version that aren't actually present in those
older simulator runtimes (they ship on device and/or in newer simulators
only). The affected APIs were annotated with the appropriate
simulator-availability attributes, verified against the actual simulator
runtime binaries with `nm`:

* **SafetyKit** Crash Detection (`SACrashDetectionEvent` /
`SACrashDetectionManager` / `SAEmergencyResponseManager`) →
`[SupportedSimulator ("ios16.4")]`.
* **CoreMedia** HDR10+ (`kCMSampleAttachmentKey_HDR10PlusPerFrameData`,
property and smart-enum member) → `[SupportedSimulator ("ios16.1")]` +
`("tvos16.1")`.
* **tvOS Metal** acceleration-structure / mesh / rasterization types →
`[SupportedSimulator ("tvos16.1")]`.
* **Metal** `MTLIOCompressionContext*` P/Invokes (present in 16.0,
removed from 16.4) → versioned `[UnsupportedSimulator ("ios16.4")]` +
`("tvos16.4")`.

To make the versioned `[UnsupportedSimulator]` meaningful:

* `tests/common/PlatformInfo.IsAvailableInSimulator` now treats a
versioned `[UnsupportedSimulator ("ios18.0")]` as "unavailable starting
with that simulator version" (mirroring the existing versioned
`[SupportedSimulator]` handling). A bare platform name keeps its
previous "unavailable on every simulator version" meaning.
* `tools/common/DerivedLinkContext` now prefix-matches
`[UnsupportedSimulator]` platform names and conservatively skips the
simulator-inlining optimization for versioned entries, falling back to
the (already weak + `dlsym`-guarded) runtime symbol lookup.

Validated by running introspection on iOS 16.0/27.0 and tvOS 16.0/27.0
simulators — all four configurations pass.

## Test & tooling fixes to keep CI green

* **xtro-sharpie**: regenerated the API annotations against the new SDK.
* **`TargetPlatformVersionLibrary` stays at 26.0.** The default
*library* TPV is the first OS version of the current major .NET (.NET 10
→ 26.0) and must not change on minor/Xcode bumps; only the *executable*
default follows the latest (→ 27.0). The `MajorTargetPlatformVersion`
unit test was corrected to expect library major 26 / executable major 27
(`tests/dotnet/UnitTests/ApplePlatformExtensions.cs`).
* Misc test adjustments:
`tests/cecil-tests/Documentation.KnownFailures.txt`,
`tests/common/TestRuntime.cs`, `tests/bgen/BGenTests.cs`,
`tests/sharpie/…/SdkDbTest.cs`, `tests/msbuild/…/ACToolTaskTest.cs`.
* Auto-formatted source and trailing-whitespace cleanup.

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: GitHub Actions Autoformatter <github-actions-autoformatter@xamarin.com>
Co-authored-by: Rolf Bjarne Kvinge <rokvin@microsoft.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

The mlaunch bump from 1.1.113 to 1.1.127 (Xcode 27.0 Beta 1 baseline,
#25729) added new assemblies to mlaunch.app/Contents/MonoBundle: the
Microsoft.Testing.Platform managed assembly + localized satellites, and
a few architecture-specific (R2R) runtime assemblies under
.xamarin/<rid>/ (System.ComponentModel, System.Private.Xml.Linq,
System.Text.Encodings.Web, System.Threading and System.Xml.Linq).

These new files are not classified in SignList.xml, so the MicroBuild
signing step in the "Prepare .NET Release" stage fails with "unknown
files which should be signed" (HandleUnmappedFiles=fail).

Add the 7 new assemblies as FirstParty so they are signed, consistent
with the rest of the mlaunch.app MonoBundle content.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Automated merge of `main` into `xcode27.0`.

Created by the code-radiator workflow.

Supersedes #25728 which was closed due to a manual merge that occurred
after the PR was created.




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…AppleOS (#25786)

This PR updates the `xcode27.0` branch to **Xcode 27.0 Beta 2** and
teaches Objective Sharpie and xtro-sharpie about the new `anyAppleOS`
availability meta-platform introduced in the Xcode 27 SDK.

## Xcode 27.0 Beta 2

- Bump `XCODE_URL` and `XCODE_DEVELOPER_ROOT` in `Make.config` to Xcode
27.0 Beta 2.
- Regenerate the xtro-sharpie API baselines
(`tests/xtro-sharpie/api-annotations-dotnet/*.todo` / `*.ignore`) to
match the Beta 2 SDK.

## `anyAppleOS` availability support

The Xcode 27 SDK introduces a new clang availability meta-platform,
`anyAppleOS` (used as `API_AVAILABLE(anyappleos(x))`), meaning
"available on every Apple OS". It's already used by
`Accessibility.framework` (`AXSettings.h`).

Sharpie parses the SDK headers with upstream llvm.org libclang, which
doesn't understand `anyAppleOS` and reports it as an unknown platform.
This made `AUTO_SANITIZE=1 make all` fail in `tests/xtro-sharpie` with:

```
SHARPIE0000: An unexpected error occurred: Unsupported clang availability platform: 'anyAppleOS'
```

Changes:

- **`AvailabilityBaseAttribute`** now expands `anyAppleOS` into the
Apple platforms macios ships (iOS, macOS, Mac Catalyst, tvOS), all
sharing the same version, instead of throwing. `GetPlatforms` is an
iterator so the common path no longer allocates a single-element array
per availability attribute.
- **`ObjectiveCBinder`** suppresses the spurious "unknown platform
'anyAppleOS'" clang warning, since we now understand the platform
ourselves.
- The **xtro classifier** (`Helpers.IsAvailable`/`IsDeprecated`) treats
`anyappleos` as the platform currently being checked, so APIs decorated
with it are correctly considered available on every platform.
- Added a Sharpie on-disk test
(`tests/sharpie/Tests/AvailabilityAnyAppleOS.h`).

## Introspection

In Xcode 27, a few CarPlay types (`CPButton`, `CPContactCallButton`,
`CPContactDirectionsButton`, `CPContactMessageButton`,
`CPTravelEstimates`) gained an undocumented `NSCopying` conformance that
isn't declared in the public headers. This intermittently failed
`iOSApiProtocolTest.Copying` (the conformance is only detected when the
CarPlay framework happens to be loaded in the simulator). These types
are added to the existing `NSCopying` "conformance not in headers" skip
list, matching how the same types are already handled for `NSCoding` and
`NSSecureCoding`.

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Automated merge of `main` into `xcode27.0`.

Created by the code-radiator workflow.




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---------

Co-authored-by: Rolf Bjarne Kvinge <rokvin@microsoft.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Alex Soto <alex@soto.dev>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

> [!CAUTION]
> Protected files were modified in this change.
> This pull request is in `request_review` mode and requires explicit
human scrutiny before merge.
>
> Protected files: `README.md`



Automated merge of `main` into `xcode27.0`.

Created by the code-radiator workflow.

No conflicts - clean merge.




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Resolve the ARKit xtro todos (iOS-ARKit.todo, iOS-ARKitCore.todo and
MacCatalyst-ARKit.todo) for Xcode 27:

* Bind new iOS 27 members: ARFrame.MetadataObjects, the TrackingObjects
property on ARWorldTrackingConfiguration and ARGeoTrackingConfiguration,
ARFaceTrackingConfiguration.EnvironmentTexturingEnabled and
ARReferenceObject.UsdzFile.
* Add ARTrackable conformance to ARObjectAnchor, which resolves both the
missing protocol conformance and the new isTracked selector.
* Mark the legacy ARReferenceObject members (resourceGroupName,
rawFeaturePoints, referenceObjectsInGroupNamed:bundle:,
exportObjectToURL:previewImage:error:,
referenceObjectByApplyingTransform:,
referenceObjectByMergingObject:error:, the
ARReferenceObjectArchiveExtension field) and
ARSession.CreateReferenceObject as [Deprecated] in iOS 27.
* ARKit isn't built for Mac Catalyst, so the new selectors can't be
bound there; add them to MacCatalyst-ARKit.ignore (sorted) and delete
the now resolved todo files.
* Add ARObjectAnchor introspection version-gates for its iOS 27
ARTrackable conformance and isTracked selector (mirroring the
ARImageAnchor pattern), and register the new undocumented members in the
cecil documentation known-failures.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Bind the missing AudioToolbox APIs reported by xtro-sharpie:

* AUReverbRoomType.OutdoorGeneral (kReverbRoomType_OutdoorGeneral = 24)
on iOS, tvOS, macOS and Mac Catalyst.
* AUHeadTrackingBinauralRenderer (an AUAudioUnit subclass) and its three
readonly properties (HeadTracking, Disabled, DeviceUID) on iOS.

AUHeadTrackingBinauralRenderer re-exposes the base AUAudioUnit
designated initializer as an [Internal] init plus a manual Create
factory (guarded for iOS-only), mirroring AVCaptureEventSound, so it
satisfies both the introspection DesignatedInitializer test and the
cecil NoConstructorsWithOutErrorArguments test.

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Rolf Bjarne Kvinge <rokvin@microsoft.com>