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[dotnet] Compute _SdkIsSimulator and the trimmer configuration earlier in the build. #20431

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Apr 15, 2024
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[dotnet] Compute _SdkIsSimulator and the trimmer configuration earlier in the build. #20431

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36 changes: 36 additions & 0 deletions dotnet/targets/Xamarin.Shared.Sdk.props
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Expand Up @@ -137,6 +137,42 @@

</PropertyGroup>

<!-- Now that we know the runtime identifier, we can determine if we're building for a simulator -->
<PropertyGroup>
<_SdkIsSimulator Condition="$(RuntimeIdentifier.Contains('simulator')) Or $(RuntimeIdentifiers.Contains('simulator'))">true</_SdkIsSimulator>
<_SdkIsSimulator Condition="'$(_SdkIsSimulator)' == ''">false</_SdkIsSimulator>
</PropertyGroup>

<!-- Since we know if we're building for a simulator or not, we can determine the default trimming behavior -->
<PropertyGroup Condition="'$(TrimMode)' != ''">
<!-- If TrimMode is set, then that's the default link mode -->
<_DefaultLinkMode>TrimMode</_DefaultLinkMode>
</PropertyGroup>
<PropertyGroup Condition="'$(TrimMode)' == ''">
<!-- Linking is always on for all assemblies when using NativeAOT - this is because we need to modify all assemblies in the linker for them to be compatible with NativeAOT -->
<_DefaultLinkMode Condition="'$(_UseNativeAot)' == 'true'">Full</_DefaultLinkMode>

<_DefaultLinkMode Condition="'$(_UseNativeAot)' != 'true' And '$(_PlatformName)' == 'macOS'">None</_DefaultLinkMode> <!-- Linking is off by default for macOS apps -->
<_DefaultLinkMode Condition="'$(_UseNativeAot)' != 'true' And '$(_PlatformName)' == 'MacCatalyst' And '$(Configuration)' == 'Release'">SdkOnly</_DefaultLinkMode> <!-- Default linking is on for release builds for Mac Catalyst apps -->
<_DefaultLinkMode Condition="'$(_UseNativeAot)' != 'true' And '$(_PlatformName)' == 'MacCatalyst' And '$(Configuration)' != 'Release'">None</_DefaultLinkMode> <!-- Default linking is off for non-release builds for Mac Catalyst apps -->
<_DefaultLinkMode Condition="'$(_UseNativeAot)' != 'true' And '$(_PlatformName)' != 'macOS' And '$(_PlatformName)' != 'MacCatalyst' And '$(_SdkIsSimulator)' == 'true'">None</_DefaultLinkMode> <!-- Linking is off by default in the simulator -->
<_DefaultLinkMode Condition="'$(_UseNativeAot)' != 'true' And '$(_PlatformName)' != 'macOS' And '$(_PlatformName)' != 'MacCatalyst' And '$(_SdkIsSimulator)' != 'true'">SdkOnly</_DefaultLinkMode> <!-- Linking is SdkOnly for iOS/tvOS/watchOS apps on device -->
</PropertyGroup>
<PropertyGroup>
<_LinkMode Condition="'$(_LinkMode)' == '' And '$(_PlatformName)' == 'macOS'">$(LinkMode)</_LinkMode>
<_LinkMode Condition="'$(_LinkMode)' == '' And '$(_PlatformName)' != 'macOS'">$(MtouchLink)</_LinkMode>
<_LinkMode Condition="'$(_LinkMode)' == ''">$(_DefaultLinkMode)</_LinkMode>
<_LinkMode Condition="'$(_LinkMode)' == '' And '$(_PlatformName)' == 'macOS'">None</_LinkMode> <!-- Linking is off by default for macOS apps -->
<_LinkMode Condition="'$(_LinkMode)' == '' And '$(_PlatformName)' != 'macOS'">SdkOnly</_LinkMode> <!-- Default linking is SdkOnly for iOS/tvOS/watchOS apps -->

<!-- TrimMode specifies what the linker will do with framework assemblies -->
<TrimMode Condition="'$(_LinkMode)' == 'TrimMode'">$(TrimMode)</TrimMode>
<TrimMode Condition="'$(_LinkMode)' == 'None'">copy</TrimMode>
<TrimMode Condition="'$(_LinkMode)' == 'SdkOnly'">partial</TrimMode>
<TrimMode Condition="'$(_LinkMode)' == 'Full'">full</TrimMode>
<!-- For None link mode we also need to set TrimMode for all assemblies. This is done later -->
</PropertyGroup>

<!-- We're never using any app hosts -->
<PropertyGroup>
<_RuntimeIdentifierUsesAppHost>false</_RuntimeIdentifierUsesAppHost>
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23 changes: 0 additions & 23 deletions dotnet/targets/Xamarin.Shared.Sdk.targets
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Expand Up @@ -1651,29 +1651,6 @@
</ReadItemsFromFile>
</Target>

<Target Name="_ComputeDefaultLinkMode" DependsOnTargets="_DetectSdkLocations">
<PropertyGroup Condition="'$(TrimMode)' != ''">
<!-- If TrimMode is set, then that's the default link mode -->
<_DefaultLinkMode>TrimMode</_DefaultLinkMode>
</PropertyGroup>
<PropertyGroup Condition="'$(TrimMode)' == ''">
<!-- Linking is always on for all assemblies when using NativeAOT - this is because we need to modify all assemblies in the linker for them to be compatible with NativeAOT -->
<_DefaultLinkMode Condition="'$(_UseNativeAot)' == 'true'">Full</_DefaultLinkMode>

<_DefaultLinkMode Condition="'$(_UseNativeAot)' != 'true' And '$(_PlatformName)' == 'macOS'">None</_DefaultLinkMode> <!-- Linking is off by default for macOS apps -->
<_DefaultLinkMode Condition="'$(_UseNativeAot)' != 'true' And '$(_PlatformName)' == 'MacCatalyst' And '$(Configuration)' == 'Release'">SdkOnly</_DefaultLinkMode> <!-- Default linking is on for release builds for Mac Catalyst apps -->
<_DefaultLinkMode Condition="'$(_UseNativeAot)' != 'true' And '$(_PlatformName)' == 'MacCatalyst' And '$(Configuration)' != 'Release'">None</_DefaultLinkMode> <!-- Default linking is off for non-release builds for Mac Catalyst apps -->
<_DefaultLinkMode Condition="'$(_UseNativeAot)' != 'true' And '$(_PlatformName)' != 'macOS' And '$(_PlatformName)' != 'MacCatalyst' And '$(_SdkIsSimulator)' == 'true'">None</_DefaultLinkMode> <!-- Linking is off by default in the simulator -->
<_DefaultLinkMode Condition="'$(_UseNativeAot)' != 'true' And '$(_PlatformName)' != 'macOS' And '$(_PlatformName)' != 'MacCatalyst' And '$(_SdkIsSimulator)' != 'true'">SdkOnly</_DefaultLinkMode> <!-- Linking is SdkOnly for iOS/tvOS/watchOS apps on device -->
</PropertyGroup>
</Target>
<PropertyGroup>
<_ComputeLinkModeDependsOn>
$(_ComputeLinkModeDependsOn);
_ComputeDefaultLinkMode;
</_ComputeLinkModeDependsOn>
</PropertyGroup>

<PropertyGroup>
<_CodesignAppBundleDependsOn Condition="'$(RuntimeIdentifiers)' != ''">
_CollectRidSpecificCodesignItems;
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2 changes: 1 addition & 1 deletion msbuild/Xamarin.Shared/Xamarin.Shared.targets
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Expand Up @@ -2278,7 +2278,7 @@ Copyright (C) 2018 Microsoft. All rights reserved.
</_ComputeLinkModeDependsOn>
</PropertyGroup>
<Target Name="_ComputeLinkMode" DependsOnTargets="$(_ComputeLinkModeDependsOn)">
<PropertyGroup>
<PropertyGroup Condition="'$(UsingAppleNETSdk)' != 'true'"> <!-- this is already done outside of a target for .NET -->
<_LinkMode Condition="'$(_LinkMode)' == '' And '$(_PlatformName)' == 'macOS'">$(LinkMode)</_LinkMode>
<_LinkMode Condition="'$(_LinkMode)' == '' And '$(_PlatformName)' != 'macOS'">$(MtouchLink)</_LinkMode>
<_LinkMode Condition="'$(_LinkMode)' == ''">$(_DefaultLinkMode)</_LinkMode> <!-- Let the .NET targets chime in -->
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