SWEEP: Added target for .netstandard2.1

apache · Dec 25, 2019 · 0482957 · 0482957
1 parent ff58bae
commit 0482957
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Showing 28 changed files with 67 additions and 52 deletions.
diff --git a/src/Lucene.Net.Analysis.Common/Lucene.Net.Analysis.Common.csproj b/src/Lucene.Net.Analysis.Common/Lucene.Net.Analysis.Common.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 

diff --git a/src/Lucene.Net.Analysis.Kuromoji/Lucene.Net.Analysis.Kuromoji.csproj b/src/Lucene.Net.Analysis.Kuromoji/Lucene.Net.Analysis.Kuromoji.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 
@@ -45,6 +45,10 @@
     <ProjectReference Include="..\Lucene.Net.Analysis.Common\Lucene.Net.Analysis.Common.csproj" />
   </ItemGroup>
 
+  <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.1' ">
+    <PackageReference Include="System.Text.Encoding.CodePages" Version="$(SystemTextEncodingCodePagesPackageVersion)" />
+  </ItemGroup>
+
   <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0' ">
     <PackageReference Include="System.Text.Encoding.CodePages" Version="$(SystemTextEncodingCodePagesPackageVersion)" />
   </ItemGroup>

diff --git a/src/Lucene.Net.Analysis.Morfologik/Lucene.Net.Analysis.Morfologik.csproj b/src/Lucene.Net.Analysis.Morfologik/Lucene.Net.Analysis.Morfologik.csproj
@@ -3,7 +3,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net451</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 

diff --git a/src/Lucene.Net.Analysis.Phonetic/Lucene.Net.Analysis.Phonetic.csproj b/src/Lucene.Net.Analysis.Phonetic/Lucene.Net.Analysis.Phonetic.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 

diff --git a/src/Lucene.Net.Analysis.SmartCn/Lucene.Net.Analysis.SmartCn.csproj b/src/Lucene.Net.Analysis.SmartCn/Lucene.Net.Analysis.SmartCn.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 
@@ -52,6 +52,10 @@
     <PackageReference Include="ICU4N" Version="$(ICU4NPackageVersion)" />
   </ItemGroup>
 
+  <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.1' ">
+    <PackageReference Include="System.Text.Encoding.CodePages" Version="$(SystemTextEncodingCodePagesPackageVersion)" />
+  </ItemGroup>
+
   <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">
     <PackageReference Include="System.Text.Encoding.CodePages" Version="$(SystemTextEncodingCodePagesPackageVersion)" />
   </ItemGroup>

diff --git a/src/Lucene.Net.Analysis.Stempel/Lucene.Net.Analysis.Stempel.csproj b/src/Lucene.Net.Analysis.Stempel/Lucene.Net.Analysis.Stempel.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 

diff --git a/src/Lucene.Net.Benchmark/Lucene.Net.Benchmark.csproj b/src/Lucene.Net.Benchmark/Lucene.Net.Benchmark.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 
@@ -56,7 +56,10 @@
     <PackageReference Include="Spatial4n.Core" Version="$(Spatial4nCorePackageVersion)" />
   </ItemGroup>
 
-  <!-- NOTE: Microsoft's recommendation is not to use the ICloneable interface. We put in a FEATURE_CLONEABLE constant in case anyone wants to add it to the build -->
+  <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.1' ">
+    <PackageReference Include="SharpZipLib" Version="$(SharpZipLibPackageVersion)" />
+  </ItemGroup>
+
   <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">
     <PackageReference Include="SharpZipLib" Version="$(SharpZipLibPackageVersion)" />
   </ItemGroup>

diff --git a/src/Lucene.Net.Classification/Lucene.Net.Classification.csproj b/src/Lucene.Net.Classification/Lucene.Net.Classification.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 

diff --git a/src/Lucene.Net.Codecs/Lucene.Net.Codecs.csproj b/src/Lucene.Net.Codecs/Lucene.Net.Codecs.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 

diff --git a/src/Lucene.Net.Demo/Lucene.Net.Demo.csproj b/src/Lucene.Net.Demo/Lucene.Net.Demo.csproj
@@ -24,7 +24,7 @@
   <!-- Demo is deployed through the dotnet/tools/lucene-cli package -->
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 

diff --git a/src/Lucene.Net.Expressions/Lucene.Net.Expressions.csproj b/src/Lucene.Net.Expressions/Lucene.Net.Expressions.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 
@@ -47,6 +47,12 @@
     <PackageReference Include="Antlr3.Runtime" Version="$(Antlr3RuntimePackageVersion)" />
   </ItemGroup>
 
+  <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.1' ">
+    <PackageReference Include="System.Reflection.Emit" Version="$(SystemReflectionEmitPackageVersion)" />
+    <PackageReference Include="System.Reflection.Emit.ILGeneration" Version="$(SystemReflectionEmitILGenerationPackageVersion)" />
+    <PackageReference Include="System.Reflection.TypeExtensions" Version="$(SystemReflectionTypeExtensionsPackageVersion)" />
+  </ItemGroup>
+
   <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">
     <PackageReference Include="System.Reflection.Emit" Version="$(SystemReflectionEmitPackageVersion)" />
     <PackageReference Include="System.Reflection.Emit.ILGeneration" Version="$(SystemReflectionEmitILGenerationPackageVersion)" />
@@ -59,7 +65,7 @@
     <PackageReference Include="System.Reflection.TypeExtensions" Version="$(SystemReflectionTypeExtensionsPackageVersion)" />
   </ItemGroup>
 
-  <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard1.6' OR '$(TargetFramework)' == 'netstandard2.0' ">
+  <ItemGroup Condition=" '$(TargetFramework)' != 'net45' ">
     <Compile Remove="Properties\Settings.Designer.cs" />
     <EmbeddedResource Include="JS\JavascriptCompiler.properties" />
   </ItemGroup>
@@ -69,4 +75,19 @@
     <Reference Include="Microsoft.CSharp" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Compile Update="Properties\Settings.Designer.cs">
+      <DesignTimeSharedInput>True</DesignTimeSharedInput>
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Settings.settings</DependentUpon>
+    </Compile>
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Update="Properties\Settings.settings">
+      <Generator>SettingsSingleFileGenerator</Generator>
+      <LastGenOutput>Settings.Designer.cs</LastGenOutput>
+    </None>
+  </ItemGroup>
+
 </Project>
diff --git a/src/Lucene.Net.Expressions/Properties/Settings.Designer.cs b/src/Lucene.Net.Expressions/Properties/Settings.Designer.cs
diff --git a/src/Lucene.Net.Facet/Lucene.Net.Facet.csproj b/src/Lucene.Net.Facet/Lucene.Net.Facet.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 

diff --git a/src/Lucene.Net.Grouping/Lucene.Net.Grouping.csproj b/src/Lucene.Net.Grouping/Lucene.Net.Grouping.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 

diff --git a/src/Lucene.Net.Highlighter/Lucene.Net.Highlighter.csproj b/src/Lucene.Net.Highlighter/Lucene.Net.Highlighter.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 

diff --git a/src/Lucene.Net.Join/Lucene.Net.Join.csproj b/src/Lucene.Net.Join/Lucene.Net.Join.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 

diff --git a/src/Lucene.Net.Memory/Lucene.Net.Memory.csproj b/src/Lucene.Net.Memory/Lucene.Net.Memory.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 

diff --git a/src/Lucene.Net.Misc/Lucene.Net.Misc.csproj b/src/Lucene.Net.Misc/Lucene.Net.Misc.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 

diff --git a/src/Lucene.Net.Queries/Lucene.Net.Queries.csproj b/src/Lucene.Net.Queries/Lucene.Net.Queries.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 

diff --git a/src/Lucene.Net.QueryParser/Lucene.Net.QueryParser.csproj b/src/Lucene.Net.QueryParser/Lucene.Net.QueryParser.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 

diff --git a/src/Lucene.Net.Replicator/Lucene.Net.Replicator.csproj b/src/Lucene.Net.Replicator/Lucene.Net.Replicator.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 

diff --git a/src/Lucene.Net.Sandbox/Lucene.Net.Sandbox.csproj b/src/Lucene.Net.Sandbox/Lucene.Net.Sandbox.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 

diff --git a/src/Lucene.Net.Spatial/Lucene.Net.Spatial.csproj b/src/Lucene.Net.Spatial/Lucene.Net.Spatial.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 

diff --git a/src/Lucene.Net.Suggest/Lucene.Net.Suggest.csproj b/src/Lucene.Net.Suggest/Lucene.Net.Suggest.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 

diff --git a/src/Lucene.Net.TestFramework/Lucene.Net.TestFramework.csproj b/src/Lucene.Net.TestFramework/Lucene.Net.TestFramework.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 

diff --git a/src/Lucene.Net/Lucene.Net.csproj b/src/Lucene.Net/Lucene.Net.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 
@@ -38,6 +38,10 @@
     <Compile Include="..\CommonAssemblyKeys.cs" Link="Properties\CommonAssemblyKeys.cs" />
   </ItemGroup>
 
+  <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.1' ">
+    <PackageReference Include="Microsoft.CSharp" Version="$(MicrosoftCSharpPackageVersion)" />
+  </ItemGroup>
+
   <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">
     <PackageReference Include="Microsoft.CSharp" Version="$(MicrosoftCSharpPackageVersion)" />
   </ItemGroup>

diff --git a/src/dotnet/Lucene.Net.ICU/Lucene.Net.ICU.csproj b/src/dotnet/Lucene.Net.ICU/Lucene.Net.ICU.csproj
@@ -24,7 +24,7 @@
   <Import Project="$(SolutionDir)build/NuGet.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net45</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>
 

diff --git a/src/dotnet/Lucene.Net.Replicator.AspNetCore/Lucene.Net.Replicator.AspNetCore.csproj b/src/dotnet/Lucene.Net.Replicator.AspNetCore/Lucene.Net.Replicator.AspNetCore.csproj
@@ -25,7 +25,7 @@
   <!--<Import Project="$(SolutionDir)build/NuGet.props" />-->
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;netstandard1.6</TargetFrameworks>
+    <TargetFrameworks>netstandard2.1;netstandard2.0;netstandard1.6</TargetFrameworks>
     <TargetFrameworks Condition="$([MSBuild]::IsOsPlatform('Windows'))">$(TargetFrameworks);net451</TargetFrameworks>
     <PackageTargetFallback Condition=" '$(TargetFramework)' == 'netstandard1.6' ">$(PackageTargetFallback);dnxcore50</PackageTargetFallback>