Merge pull request #6 from couven92/downgrade-netstandard

Support netstandard1.6

Author: natemcmaster

src/CommandLineUtils/McMaster.Extensions.CommandLineUtils.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net45;netstandard2.0</TargetFrameworks>
+    <TargetFrameworks>net45;;netstandard1.6;netstandard2.0</TargetFrameworks>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <IsPackable>true</IsPackable>
     <Description>Command-line parsing API. A community-maintained fork of Microsoft.Extensions.CommandLineUtils, plus extras.
@@ -17,4 +17,10 @@ McMaster.Extensions.CommandLineUtils.ArgumentEscaper
     <IncludeSource>true</IncludeSource>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Condition="'$(TargetFramework)'=='netstandard1.6'" Include="System.AppContext" Version="4.3.0" />
+    <PackageReference Condition="'$(TargetFramework)'=='netstandard1.6'" Include="System.Diagnostics.Process" Version="4.3.0" />
+    <PackageReference Condition="'$(TargetFramework)'=='netstandard1.6'" Include="System.Threading.Thread" Version="4.3.0" />
+  </ItemGroup>
+
 </Project>

src/CommandLineUtils/Utilities/DotNetExe.cs

@@ -38,7 +38,7 @@ private static string TryFindDotNetExePath()
         {
 #if NET45
             return "dotnet.exe";
-#elif NETSTANDARD2_0
+#elif (NETSTANDARD1_6 || NETSTANDARD2_0)
             var fileName = FileName;
 
             if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))