update framework support

Author: cathei

LinqGen.Benchmarks/LinqGen.Benchmarks.csproj

@@ -2,7 +2,8 @@
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>net6.0</TargetFramework>
+        <TargetFrameworks>net472;net6.0</TargetFrameworks>
+        <LangVersion>10</LangVersion>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
     </PropertyGroup>
@@ -13,8 +14,9 @@
     </ItemGroup>
 
     <ItemGroup>
-      <PackageReference Include="BenchmarkDotNet" Version="0.13.2" />
-      <PackageReference Include="NetFabric.Hyperlinq" Version="3.0.0-beta48" />
-      <PackageReference Include="StructLinq" Version="0.27.1" />
+        <PackageReference Include="BenchmarkDotNet" Version="0.13.2" />
+        <PackageReference Include="NetFabric.Hyperlinq" Version="3.0.0-beta48" />
+        <PackageReference Include="StructLinq" Version="0.27.1" />
     </ItemGroup>
+
 </Project>

LinqGen/LinqGen.csproj

@@ -1,12 +1,18 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFrameworks>netstandard2.1;net6</TargetFrameworks>
+        <TargetFrameworks>netstandard2.0;netstandard2.1;net6</TargetFrameworks>
         <Nullable>enable</Nullable>
         <LangVersion>9</LangVersion>
         <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     </PropertyGroup>
 
+    <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">
+        <PackageReference Include="System.Buffers" Version="4.5.1" />
+        <PackageReference Include="System.Memory" Version="4.5.5" />
+        <PackageReference Include="System.Runtime.CompilerServices.Unsafe" Version="6.0.0" />
+    </ItemGroup>
+
     <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.1' ">
         <PackageReference Include="System.Runtime.CompilerServices.Unsafe" Version="6.0.0" />
     </ItemGroup>

Makefile

@@ -6,3 +6,7 @@ copy:
 	cp -R LinqGen/Core/* LinqGen.Unity/Packages/com.cathei.linqgen/Runtime/Core
 	dotnet publish -c Release -o LinqGen.Unity/Packages/com.cathei.linqgen LinqGen.Generator
 
+benchmark:
+	dotnet clean -c Release
+	dotnet run --project LinqGen.Benchmarks -c Release -f net6.0
+