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dotnet · Feb 11, 2017 · 27b7e0e · 27b7e0e
1 parent 0addb4e
commit 27b7e0e
Showing 1 changed file with 9 additions and 1 deletion.
diff --git a/src/Tasks/Microsoft.NET.Build.Tasks/build/Microsoft.NET.Sdk.props b/src/Tasks/Microsoft.NET.Build.Tasks/build/Microsoft.NET.Sdk.props
@@ -103,15 +103,23 @@ Copyright (c) .NET Foundation. All rights reserved.
     <GenerateResourceMSBuildRuntime>CurrentRuntime</GenerateResourceMSBuildRuntime>
   </PropertyGroup>
 
-  <!--  -->
+  <!-- We need to determine if the RuntimeIdentifier was globally set. This check takes advantage of the fact that
+       global properties cannot be overwritten. -->
   <PropertyGroup>
+    <!-- First, backup the value of the RuntimeIdentifier -->
     <GlobalRuntimeIdentifier>$(RuntimeIdentifier)</GlobalRuntimeIdentifier>
+    <!-- Now set the RuntimeIdentifier to a bogus value. If it is global, this change will be ignored. -->
     <RuntimeIdentifier>__________</RuntimeIdentifier>
   </PropertyGroup>
+
+  <!-- If the RuntimeIdentifier was not set globally, put back its local value. -->
   <PropertyGroup Condition=" '$(RuntimeIdentifier)' != '$(GlobalRuntimeIdentifier)'">
     <RuntimeIdentifier>$(GlobalRuntimeIdentifier)</RuntimeIdentifier>
+    <!-- Null out the GlobalRuntimeIdentifier since RuntimeIdentifier is not set globally. -->
     <GlobalRuntimeIdentifier></GlobalRuntimeIdentifier>
   </PropertyGroup>
+
+  <!-- If the RuntimeIdentifier was set globally, pass it to GetTargetFrameworkProperties. -->
   <PropertyGroup Condition=" '$(GlobalRuntimeIdentifier)' != '' ">
     <AdditionalPropertiesForGetTargetFrameworkProperties>;ReferringRuntimeIdentifier=$(GlobalRuntimeIdentifier)</AdditionalPropertiesForGetTargetFrameworkProperties>
   </PropertyGroup>