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[net10.0] Update the default value for 'EventSourceSupport' and 'MetricsSupport'. #23543

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Aug 12, 2025
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[net10.0] Update the default value for 'EventSourceSupport' and 'MetricsSupport'. #23543

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24 changes: 24 additions & 0 deletions docs/building-apps/build-properties.md
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Expand Up @@ -386,6 +386,18 @@ Enables the concurrent mode for the SGen garbage collector.

Only applicable to iOS, tvOS and Mac Catalyst (when not using NativeAOT).

## EventSourceSupport

When set to `false`, disables .NET's [EventSource][eventsource] support from
trimmed applications. Disabling this feature would prevent .NET diagnostic
tools like `dotnet-counters` from functioning, but at the benefit of reduced
application size.

Default: set to `false` when `Optimize` is set to `true` (which is the default
for `Release` builds), unless `$(EnableDiagnostics)` is enabled.

[eventsource]: https://learn.microsoft.com/dotnet/core/diagnostics/eventsource

## GenerateApplicationManifest

If an application manifest (`Info.plist`) should be generated.
Expand Down Expand Up @@ -583,6 +595,18 @@ The full path to the Metal compiler.

The default behavior is to use `xcrun metal`.

## MetricsSupport

When set to `false`, disables .NET's [Metrics][dotnetmetrics] support from
trimmed applications. Disabling this feature would prevent APIs such as
`System.Diagnostics.Metrics` from functioning, but at the benefit of reduced
application size.

Default: set to `false` when `Optimize` is set to `true` (which is the default
for `Release` builds), unless `$(EnableDiagnostics)` is enabled.

[dotnetmetrics]: https://learn.microsoft.com/dotnet/core/diagnostics/metrics

## MmpDebug

Enables debug mode for app bundle creation.
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1 change: 1 addition & 0 deletions docs/configuration-properties.md
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Expand Up @@ -32,6 +32,7 @@ These are options that are set when the `Optimize` property is `true` (which hap

| **Property** | **Value** |
|--------------------------------|------------|
| EventSourceSupport | false |
| HttpActivityPropagationSupport | false |
| MetricsSupport | false |

4 changes: 2 additions & 2 deletions dotnet/targets/Xamarin.Shared.Sdk.targets
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Expand Up @@ -113,9 +113,9 @@
<EnableUnsafeBinaryFormatterInDesigntimeLicenseContextSerialization Condition="'$(EnableUnsafeBinaryFormatterInDesigntimeLicenseContextSerialization)' == ''">false</EnableUnsafeBinaryFormatterInDesigntimeLicenseContextSerialization>
<EnableUnsafeBinaryFormatterSerialization Condition="'$(EnableUnsafeBinaryFormatterSerialization)' == ''">false</EnableUnsafeBinaryFormatterSerialization>
<EnableUnsafeUTF7Encoding Condition="'$(EnableUnsafeUTF7Encoding)' == ''">false</EnableUnsafeUTF7Encoding>
<EventSourceSupport Condition="'$(EventSourceSupport)' == ''">false</EventSourceSupport>
<EventSourceSupport Condition="'$(EventSourceSupport)' == '' And '$(Optimize)' == 'true' And '$(EnableDiagnostics)' != 'true'">false</EventSourceSupport>
<HttpActivityPropagationSupport Condition="'$(HttpActivityPropagationSupport)' == '' and '$(Optimize)' == 'true'">false</HttpActivityPropagationSupport>
<MetricsSupport Condition="'$(MetricsSupport)' == '' And '$(Optimize)' == 'true'">false</MetricsSupport>
<MetricsSupport Condition="'$(MetricsSupport)' == '' And '$(Optimize)' == 'true' And '$(EnableDiagnostics)' != 'true'">false</MetricsSupport>
<Http3Support Condition="'$(Http3Support)' == ''">false</Http3Support>
<InvariantGlobalization Condition="'$(InvariantGlobalization)' == ''">false</InvariantGlobalization>
<!-- Enable HybridGlobalization by default-->
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