Attempt to make musl work

Author: davidwrighton

eng/Dependencies.props

@@ -96,6 +96,7 @@ and are generated based on the last package release.
     <!-- Crossgen2 compiler -->
     <LatestPackageReference Include="Microsoft.NETCore.App.Crossgen2.osx-x64" />
     <LatestPackageReference Include="Microsoft.NETCore.App.Crossgen2.osx-arm64" />
+    <LatestPackageReference Include="Microsoft.NETCore.App.Crossgen2.linux-musl-x64" />
     <LatestPackageReference Include="Microsoft.NETCore.App.Crossgen2.linux-x64" />
     <LatestPackageReference Include="Microsoft.NETCore.App.Crossgen2.win-x64" />
     <LatestPackageReference Include="Microsoft.NETCore.App.Crossgen2.win-arm64" />

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

@@ -112,7 +112,7 @@ This package is an internal implementation of the .NET Core SDK and is not meant
     <RuntimePackageRootVariableName>PkgMicrosoft_NETCore_App_Runtime_$(RuntimeIdentifier)</RuntimePackageRootVariableName>
 
     <BuildOsName>$(TargetOsName)</BuildOsName>
-    <BuildOsName Condition="'$(TargetOsName)' == 'linux-musl'">linux</BuildOsName>
+    <BuildOsName Condition="'$(TargetOsName)' == 'linux-musl' and '$(BuidlArchitecture)'!='x64'">linux</BuildOsName>
     <Crossgen2PackageRootVariableName>PkgMicrosoft_NETCore_App_Crossgen2_$(BuildOsName)-$(BuildArchitecture)</Crossgen2PackageRootVariableName>
 
     <AssetTargetFallback>$(AssetTargetFallback);native,Version=0.0</AssetTargetFallback>
@@ -449,6 +449,7 @@ This package is an internal implementation of the .NET Core SDK and is not meant
 
       <Crossgen2TargetOs>$(TargetOsName)</Crossgen2TargetOs>
       <Crossgen2TargetOs Condition="'$(TargetOsName)' == 'win'">windows</Crossgen2TargetOs>
+      <Crossgen2TargetOs Condition="'$(TargetOsName)' == 'linux-musl'">linux</Crossgen2TargetOs>
       <Crossgen2Args>--targetarch:$(TargetArchitecture)</Crossgen2Args>
       <Crossgen2Args>$(Crossgen2Args) --targetos:$(Crossgen2TargetOs)</Crossgen2Args>
       <Crossgen2Args>$(Crossgen2Args) -O</Crossgen2Args>