Merge pull request #33030 from RikkiGibson/long-paths

Add long paths support

eng/config/app.manifest

+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
+
+<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
+  <assemblyIdentity version="{generated}" name="{generated}"/>
+  <trustInfo xmlns="urn:schemas-microsoft-com:asm.v2">
+    <security>
+      <requestedPrivileges xmlns="urn:schemas-microsoft-com:asm.v3">
+        <requestedExecutionLevel level="asInvoker" uiAccess="false"/>
+      </requestedPrivileges>
+    </security>
+  </trustInfo>
+
+  <application xmlns="urn:schemas-microsoft-com:asm.v3">
+    <windowsSettings>
+      <longPathAware xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings">true</longPathAware>
+    </windowsSettings>
+  </application>
+</assembly>
\ No newline at end of file

eng/targets/Imports.targets

@@ -237,4 +237,51 @@
       </TargetFrameworkMonikerAssemblyAttributeText>
     </PropertyGroup>
   </Target>
+
+  <Target Name="_CalculateSubstituteVariablesInApplicationManifestInputsOutputs">
+    <PropertyGroup>
+      <_OriginalApplicationManifestPath>$(RepositoryEngineeringDir)config\app.manifest</_OriginalApplicationManifestPath>
+      <_UpdatedApplicationManifestPath>$(IntermediateOutputPath)$(AssemblyName).exe.manifest</_UpdatedApplicationManifestPath>
+    </PropertyGroup>
+  </Target>
+
+  <!--
+    Sets the values of "version" and "name" attributes in assemblyIdentity element in the application manifest file
+    with values $(AssemblyVersion) and $(AssemblyName) to avoid hardcoding those in the manifest file.
+  -->
+  <Target Name="_SubstituteVariablesInApplicationManifest"
+          BeforeTargets="_SetExternalWin32ManifestProperties;_SetEmbeddedWin32ManifestProperties"
+          DependsOnTargets="_CalculateSubstituteVariablesInApplicationManifestInputsOutputs;GetAssemblyVersion"
+          Inputs="$(_OriginalApplicationManifestPath)"
+          Outputs="$(_UpdatedApplicationManifestPath)"
+          Condition="'$(OutputType)' == 'Exe' And '$(TargetFramework)' == 'net472'">
+
+    <Copy SourceFiles="$(_OriginalApplicationManifestPath)" DestinationFiles="$(_UpdatedApplicationManifestPath)" />
+
+    <PropertyGroup>
+      <_Namespace>
+        <Namespace Prefix="asm" Uri="urn:schemas-microsoft-com:asm.v1" />
+      </_Namespace>
+    </PropertyGroup>
+
+    <!-- Update version attribute -->
+    <XmlPoke XmlInputPath="$(_UpdatedApplicationManifestPath)"
+             Value="$(AssemblyVersion)"
+             Query="/asm:assembly/asm:assemblyIdentity/@version"
+             Namespaces="$(_Namespace)"/>
+
+    <!-- Update name attribute -->
+    <XmlPoke XmlInputPath="$(_UpdatedApplicationManifestPath)"
+             Value="$(AssemblyName)"
+             Query="/asm:assembly/asm:assemblyIdentity/@name"
+             Namespaces="$(_Namespace)"/>
+
+    <PropertyGroup>
+      <ApplicationManifest>$(_UpdatedApplicationManifestPath)</ApplicationManifest>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <FileWrites Include="$(_UpdatedApplicationManifestPath)"/>
+    </ItemGroup>
+  </Target>
 </Project>