Fix ILLink errors in the build.

src/coreclr/crossgen-corelib.proj

@@ -158,4 +158,6 @@
     <Message Importance="High" Text="Crossgenning of System.Private.CoreLib succeeded." />
     <Message Importance="High" Text="Product binaries are available at $(BinDir)" />
   </Target>
+
+  <Import Project="$(RepositoryEngineeringDir)targetingpacks.targets" />
 </Project>

src/coreclr/runtime-prereqs.proj

@@ -8,6 +8,7 @@
     <VerifySourceLinkFileExists>false</VerifySourceLinkFileExists>
     <VerifySourceLinkFileExists Condition="'$(ContinuousIntegrationBuild)' == 'true' AND '$(EnableSourceControlManagerQueries)' == 'true'">true</VerifySourceLinkFileExists>
     <AssemblyName>.NET Runtime</AssemblyName>
+    <RunAnalyzers>false</RunAnalyzers>
   </PropertyGroup>
 
   <Import Project="$(RepositoryEngineeringDir)versioning.targets" />

src/coreclr/runtime.proj

@@ -6,6 +6,7 @@
 
     <_BuildNativeTargetOS>$(TargetOS)</_BuildNativeTargetOS>
     <_BuildNativeTargetOS Condition="'$(TargetsLinuxBionic)' == 'true'">linux-bionic</_BuildNativeTargetOS>
+    <RunAnalyzers>false</RunAnalyzers>
   </PropertyGroup>
 
   <ItemGroup>

src/coreclr/tools/Common/TypeSystem/Ecma/SymbolReader/UnmanagedPdbSymbolReader.cs

@@ -68,7 +68,7 @@ protected override object CreateObject(IntPtr externalComObject, CreateObjectFla
                 Debug.Assert(flags == CreateObjectFlags.UniqueInstance);
 
                 var iid = ICLRMetaHost.IID;
-                if (Marshal.QueryInterface(externalComObject, ref iid, out IntPtr hostPtr) != 0)
+                if (Marshal.QueryInterface(externalComObject, in iid, out IntPtr hostPtr) != 0)
                 {
                     throw new ArgumentException("Expected ICLRMetaHost COM interface");
                 }
@@ -284,7 +284,7 @@ private CoCreateWrapperCache() { }
                 Debug.Assert(flags == CreateObjectFlags.UniqueInstance);
 
                 var iid = new Guid("AA544D42-28CB-11d3-BD22-0000F80849BD");
-                if (Marshal.QueryInterface(externalComObject, ref iid, out IntPtr ppv) != 0)
+                if (Marshal.QueryInterface(externalComObject, in iid, out IntPtr ppv) != 0)
                 {
                     return null;
                 }

src/coreclr/tools/aot/ILCompiler.Build.Tasks/ILCompiler.Build.Tasks.csproj

@@ -9,12 +9,16 @@
     <OutputPath>$(RuntimeBinDir)/ilc-published/netstandard</OutputPath>
     <Configurations>Debug;Release;Checked</Configurations>
     <PlatformTarget>AnyCPU</PlatformTarget>
+    <!--
+      The SDK warns if a project targets a framework that doesn't support trimming and IsTrimmable is true.
+      We set IsTrimmable higher up in the Directory.Build.props files, so we reset it to false here.
+    -->
+    <IsTrimmable>false</IsTrimmable>
   </PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Build.Framework" Version="$(MicrosoftBuildFrameworkVersion)" />
     <PackageReference Include="Microsoft.Build.Utilities.Core" Version="$(MicrosoftBuildUtilitiesCoreVersion)" />
     <PackageReference Include="System.Reflection.Metadata" Version="$(SystemReflectionMetadataVersion)" />
   </ItemGroup>
-
 </Project>

src/coreclr/tools/aot/ILCompiler.Reflection.ReadyToRun/ILCompiler.Reflection.ReadyToRun.csproj

@@ -16,6 +16,11 @@
     <Platforms>AnyCPU;x64</Platforms>
     <PlatformTarget>AnyCPU</PlatformTarget>
     <RunAnalyzers>false</RunAnalyzers>
+    <!--
+      The SDK warns if a project targets a framework that doesn't support trimming and IsTrimmable is true.
+      We set IsTrimmable higher up in the Directory.Build.props files, so we reset it to false here.
+    -->
+    <IsTrimmable>false</IsTrimmable>
   </PropertyGroup>
 
   <ItemGroup>

src/native/corehost/corehost.proj

@@ -14,6 +14,7 @@
     <!-- Global location for version files -->
     <NativeVersionFile Condition="$([MSBuild]::IsOsPlatform(Windows))">$(ArtifactsObjDir)_version.h</NativeVersionFile>
     <NativeVersionFile Condition="!$([MSBuild]::IsOsPlatform(Windows))">$(ArtifactsObjDir)_version.c</NativeVersionFile>
+    <RunAnalyzers>false</RunAnalyzers>
   </PropertyGroup>
 
   <ItemGroup>