New target to build embedded assembly store

Author: grendello

src/Xamarin.Android.Build.Tasks/Microsoft.Android.Sdk/targets/Microsoft.Android.Sdk.After.targets

@@ -29,4 +29,5 @@ This file is imported *after* the Microsoft.NET.Sdk/Sdk.targets.
   <Import Project="Microsoft.Android.Sdk.Publish.targets" />
   <Import Project="Microsoft.Android.Sdk.RuntimeConfig.targets" />
   <Import Project="Microsoft.Android.Sdk.Tooling.targets" />
+  <Import Project="Microsoft.Android.Sdk.AssemblyStores.targets" />
 </Project>

src/Xamarin.Android.Build.Tasks/Microsoft.Android.Sdk/targets/Microsoft.Android.Sdk.AssemblyStores.targets

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <UsingTask TaskName="Xamarin.Android.Tasks.CreateEmbeddedAssemblyStore" AssemblyFile="$(_XamarinAndroidBuildTasksAssembly)" />
+
+  <Target Name="_PrepareCreateEmbeddedAssemblyStoreOutputItems">
+    <!-- NOTE: the `embed_` prefix and `assembly_store` stem must be identical to the values used in ELFEmbeddingHelper -->
+    <ItemGroup>
+      <_EmbeddedAssemblyStoreObjectFile Include="$(_NativeAssemblySourceDir)embed_assembly_store.%(_BuildTargetAbis.Identity).o" />
+    </ItemGroup>
+  </Target>
+
+  <Target Name="_CreateEmbeddedAssemblyStore"
+          Condition=" '$(_AndroidEmbedAssemblyStoreInRuntime)' == 'True' "
+          DependsOnTargets="_PrepareCreateEmbeddedAssemblyStoreOutputItems"
+          Inputs="@(_ShrunkUserAssemblies);@(_AndroidResolvedSatellitePaths);@(_ShrunkFrameworkAssemblies)"
+          Outputs="@(_EmbeddedAssemblyStoreObjectFile)">
+    <CreateEmbeddedAssemblyStore
+        AndroidBinUtilsDirectory="$(AndroidBinUtilsDirectory)"
+        AppSharedLibrariesDir="$(_AndroidApplicationSharedLibraryPath)"
+        ResolvedUserAssemblies="@(_ShrunkUserAssemblies);@(_AndroidResolvedSatellitePaths)"
+        ResolvedFrameworkAssemblies="@(_ShrunkFrameworkAssemblies)">
+      <Output TaskParameter="EmbeddedObjectFiles" ItemName="_NativeAssemblyTarget" />
+      <Output TaskParameter="NativeAssemblySources" ItemName="_EmbeddedAssemblyStoreSourceFiles" />
+    </CreateEmbeddedAssemblyStore>
+
+    <ItemGroup>
+      <FileWrites Include="@(_NativeAssemblyTarget)" />
+      <FileWrites Include="@(_EmbeddedAssemblyStoreSourceFiles)" />
+    </ItemGroup>
+  </Target>
+</Project>

src/Xamarin.Android.Build.Tasks/Tasks/CreateEmbeddedAssemblyStore.cs

@@ -0,0 +1,14 @@
+using Xamarin.Android.Tools;
+using Microsoft.Android.Build.Tasks;
+
+namespace Xamarin.Android.Tasks;
+
+public class CreateEmbeddedAssemblyStore : AndroidTask
+{
+	public override string TaskPrefix => "CEAS";
+
+	public override bool RunTask ()
+	{
+		return !Log.HasLoggedErrors;
+	}
+}