build: update build and test targets

Author: anthonyreilly

build.props

@@ -24,9 +24,21 @@
   </PropertyGroup>
 
   <PropertyGroup>
-    <LibTargetFrameworks>netstandard2.0;netstandard2.1;netcoreapp3.1;net5.0;net6.0;net7.0;net8.0;net9.0</LibTargetFrameworks>
+    <LibTargetFrameworks>netstandard2.0;netstandard2.1;netcoreapp3.1;net5.0;net6.0;net7.0;net8.0;net9.0;net462;net472;net48</LibTargetFrameworks>
     <AppTargetFrameworks>net6.0;net7.0;net8.0;net9.0</AppTargetFrameworks>
-    <TestTargetFrameworks>net6.0;net7.0;net8.0;net9.0</TestTargetFrameworks>
-  </PropertyGroup>  
+  </PropertyGroup>
+
+  <Choose>
+    <When Condition="$([MSBuild]::IsOSPlatform('OSX')) OR $([MSBuild]::IsOSPlatform('Linux'))">
+      <PropertyGroup>
+        <TestTargetFrameworks>net6.0;net7.0;net8.0;net9.0</TestTargetFrameworks>
+      </PropertyGroup>
+    </When>
+    <Otherwise>
+      <PropertyGroup>
+        <TestTargetFrameworks>netcoreapp3.1;net5.0;net6.0;net7.0;net8.0;net9.0;net462;net472;net48</TestTargetFrameworks>
+      </PropertyGroup>
+    </Otherwise>
+  </Choose>
 
 </Project>

src/NetCoreForce.Client/NetCoreForce.Client.csproj

@@ -47,6 +47,10 @@
     <PackageReference Include="Microsoft.Bcl.AsyncInterfaces" Version="9.0.6" />
   </ItemGroup>
 
+  <ItemGroup Condition=" $(TargetFramework.StartsWith('net4')) ">
+    <PackageReference Include="System.Net.Http" Version="4.3.4" />
+  </ItemGroup>
+
   <Choose>
     <When Condition=" $(TargetFramework) == 'netcoreapp3.1' OR $(TargetFramework) == 'net5.0' ">
       <ItemGroup>