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Don't overbuild source generator when root building for net48 #105347

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Jul 24, 2024
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Don't overbuild source generator when root building for net48 #105347

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6 changes: 6 additions & 0 deletions src/libraries/oob-gen.proj
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Original file line number Diff line number Diff line change
@@ -1,5 +1,11 @@
<Project Sdk="Microsoft.Build.Traversal">

<PropertyGroup Condition="'$(BuildTargetFramework)' != '' and '$(BuildTargetFramework)' == '$(NetFrameworkCurrent)'">
<TargetFramework>$(BuildTargetFramework)</TargetFramework>
<!-- Filter ProjectReferences to build the best matching target framework only. -->
<FilterTraversalProjectReferences>true</FilterTraversalProjectReferences>
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Won't this still overbuild in the case that a generator doesn't multi-target? What was causing the overbuild to happen? I would have expected any duplicates to hit the MSBuild project cache - were global properties different?

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@ViktorHofer ViktorHofer Jul 24, 2024 •
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Different global properties, yes. More precisely, the BuildTargetFramework property set.

This solution works for both multi targeting and non multi-targeting builds and is just following what we already do in the other oob-*.projs. I simpy forgot to add that part.

See https://github.com/dotnet/runtime/blob/main/eng%2FTraversalSdk.AfterTargets.targets

</PropertyGroup>

<!-- Reference all out-of-band generator projects. -->
<ItemGroup>
<ProjectReference Include="$(MSBuildThisFileDirectory)*\gen\**\*.*proj"
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