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source-build: don't use crossgen when building for mono runtime. #44842

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Nov 9, 2022
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source-build: don't use crossgen when building for mono runtime. #44842

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1 change: 1 addition & 0 deletions eng/SourceBuild.props
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Expand Up @@ -55,6 +55,7 @@

<PropertyGroup>
<InnerBuildArgs>$(InnerBuildArgs) /p:SourceBuildRuntimeIdentifier=$(TargetRuntimeIdentifier)</InnerBuildArgs>
<InnerBuildArgs Condition="'$(SourceBuildUseMonoRuntime)' == 'true'">$(InnerBuildArgs) /p:CrossgenOutput=false</InnerBuildArgs>
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Could we use regular crossgen?

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What will set $(SourceBuildUseMonoRuntime)❔ I don't see it in Arcade, at least the commit I've got locally

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Could we use regular crossgen?

I don't know. Maybe mono doesn't support R2R assemblies? I'm just guessing.
Disabling this is what we're doing on the mono specific architectures already:

aspnetcore/src/Framework/App.Runtime/src/Microsoft.AspNetCore.App.Runtime.csproj

Lines 45 to 47 in b9dae95

<!-- Optimize the framework using the crossgen2 tool. Crossgen2 is not currently supported on s390x or ppc64le or armv6. -->
<CrossgenOutput Condition=" '$(TargetArchitecture)' == 's390x' OR '$(TargetArchitecture)' == 'armv6' OR '$(TargetArchitecture)' == 'ppc64le' ">false</CrossgenOutput>
<CrossgenOutput Condition=" '$(CrossgenOutput)' == '' AND '$(Configuration)' != 'Debug' ">true</CrossgenOutput>

What will set $(SourceBuildUseMonoRuntime)grey_question I don't see it in Arcade, at least the commit I've got locally

It gets set by installer, see dotnet/installer#14792.

</PropertyGroup>
</Target>

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