dotnet · danmoseley · Jan 8, 2021 · Dec 20, 2020 · Dec 20, 2020 · Dec 20, 2020
diff --git a/src/libraries/Common/src/System/SR.cs b/src/libraries/Common/src/System/SR.cs
@@ -3,7 +3,6 @@
 
 #nullable enable
 using System.Resources;
-using System.Runtime.CompilerServices;
 
 namespace System
 {

diff --git a/src/libraries/System.Private.CoreLib/src/System/Runtime/Versioning/PlatformAttributes.cs b/src/libraries/System.Private.CoreLib/src/System/Runtime/Versioning/PlatformAttributes.cs
@@ -66,9 +66,9 @@ public TargetPlatformAttribute(string platformName) : base(platformName)
 #else
     internal
 #endif
-        sealed class SupportedOSPlatformAttribute  : OSPlatformAttribute
+        sealed class SupportedOSPlatformAttribute : OSPlatformAttribute
     {
-        public SupportedOSPlatformAttribute (string platformName) : base(platformName)
+        public SupportedOSPlatformAttribute(string platformName) : base(platformName)
         {
         }
     }

diff --git a/src/libraries/System.Speech/Directory.Build.props b/src/libraries/System.Speech/Directory.Build.props
@@ -0,0 +1,16 @@
+<Project>
+  <Import Project="..\Directory.Build.props" />
+  <PropertyGroup>
+    <!-- this assembly is inbox in desktop, do not version it unless you
+         plan on shipping a new desktop version out of band. Instead add API
+         to a different assembly. -->
+    <AssemblyVersion>4.0.0.0</AssemblyVersion>
+    <StrongNameKeyId>Microsoft</StrongNameKeyId>
+    <IsWindowsSpecific>true</IsWindowsSpecific>
+    <PackageDescription>Provides types to perform speech synthesis and speech recognition.
+
+Commonly Used Types
+System.Speech.Synthesis.SpeechSynthesizer
+System.Speech.Recognition.SpeechRecognizer</PackageDescription>
+  </PropertyGroup>
+</Project>
diff --git a/src/libraries/System.Speech/System.Speech.sln b/src/libraries/System.Speech/System.Speech.sln
@@ -0,0 +1,31 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.30709.18
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "System.Speech", "src\System.Speech.csproj", "{D6377882-BD90-46D6-AC60-83498E4BA2B3}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "System.Speech.Tests", "tests\System.Speech.Tests.csproj", "{E26B6065-4016-4385-9AB2-EEBE2C97CEE7}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{D6377882-BD90-46D6-AC60-83498E4BA2B3}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D6377882-BD90-46D6-AC60-83498E4BA2B3}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D6377882-BD90-46D6-AC60-83498E4BA2B3}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D6377882-BD90-46D6-AC60-83498E4BA2B3}.Release|Any CPU.Build.0 = Release|Any CPU
+		{E26B6065-4016-4385-9AB2-EEBE2C97CEE7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{E26B6065-4016-4385-9AB2-EEBE2C97CEE7}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{E26B6065-4016-4385-9AB2-EEBE2C97CEE7}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{E26B6065-4016-4385-9AB2-EEBE2C97CEE7}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {5BD9DF41-48EC-4FB8-998D-122857C5CA73}
+	EndGlobalSection
+EndGlobal
diff --git a/src/libraries/System.Speech/pkg/System.Speech.pkgproj b/src/libraries/System.Speech/pkg/System.Speech.pkgproj
@@ -0,0 +1,16 @@
+<Project DefaultTargets="Build">
+  <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
+  <ItemGroup>
+    <ProjectReference Include="..\ref\System.Speech.csproj">
+      <SupportedFramework>netcoreapp2.0;net45;uap10.0.16299;$(AllXamarinFrameworks)</SupportedFramework>
+    </ProjectReference>
+    <ProjectReference Include="..\src\System.Speech.csproj" />
+    <InboxOnTargetFramework Include="net45">
+      <AsFrameworkReference>true</AsFrameworkReference>
+    </InboxOnTargetFramework>
+    <PackageFile Include=".\build\System.Speech.targets">
+      <TargetPath>build\netcoreapp2.0\</TargetPath>
+    </PackageFile>
+  </ItemGroup>
+  <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.targets))" />
+</Project>
diff --git a/src/libraries/System.Speech/pkg/build/System.Speech.targets b/src/libraries/System.Speech/pkg/build/System.Speech.targets
@@ -0,0 +1,7 @@
+<Project InitialTargets="_ValidateSystemSpeechNotNetCoreApp20">
+  <Target Name="_ValidateSystemSpeechNotNetCoreApp20"
+          Condition="'$(TargetFrameworkIdentifier)' == '.NETCoreApp' and '$(TargetFrameworkVersion)' == 'v2.0'">
+    <Error Condition="'$(SuppressTfmSupportBuildWarnings)' == ''"
+           Code="SYSLIB9000" Text="System.Speech doesn't support netcoreapp2.0. Consider updating your TargetFramework to netcoreapp2.1 or later." />
+  </Target>
+</Project>
diff --git a/src/libraries/System.Speech/ref/System.Speech.cs b/src/libraries/System.Speech/ref/System.Speech.cs
diff --git a/src/libraries/System.Speech/ref/System.Speech.csproj b/src/libraries/System.Speech/ref/System.Speech.csproj
@@ -0,0 +1,8 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="System.Speech.cs" />
+  </ItemGroup>
+</Project>