From 3bd4813d364a7b22788853d1de8f1b53c9de9de6 Mon Sep 17 00:00:00 2001
From: Viktor Hofer <viktor.hofer@microsoft.com>
Date: Wed, 8 Jul 2020 18:17:43 +0200
Subject: [PATCH 1/2] Build refs only for applicable BuildTFMs

---
 eng/referenceAssemblies.props | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/eng/referenceAssemblies.props b/eng/referenceAssemblies.props
index 35131d5fdf6064..3734c9a858062f 100644
--- a/eng/referenceAssemblies.props
+++ b/eng/referenceAssemblies.props
@@ -1,7 +1,12 @@
 <Project>
-  <PropertyGroup>
-    <AdditionalBuildTargetFrameworks Condition="'$(BuildAllProjects)' == 'true'">$(AdditionalBuildTargetFrameworks);netstandard2.0;netstandard2.1</AdditionalBuildTargetFrameworks>    
+  <PropertyGroup Condition="'$(BuildAllProjects)' == 'true' and
+                            !$(BuildTargetFramework.StartsWith('netstandard'))">
+    <AdditionalBuildTargetFrameworks Condition="!$(BuildTargetFramework.StartsWith('net45'))'">$(AdditionalBuildTargetFrameworks);netstandard2.0</AdditionalBuildTargetFrameworks>
+    <AdditionalBuildTargetFrameworks Condition="!$(BuildTargetFramework.StartsWith('netcoreapp2.0')) and
+                                                !$(BuildTargetFramework.StartsWith('net4'))">$(AdditionalBuildTargetFrameworks);netstandard2.1</AdditionalBuildTargetFrameworks>
+  </PropertyGroup>
 
+  <PropertyGroup>
     <!-- disable warnings about unused fields -->
     <NoWarn>$(NoWarn);CS0169;CS0649;CS8618</NoWarn>
 

From ba8c53344d3504822f00e0feefe3f2045c538a45 Mon Sep 17 00:00:00 2001
From: Viktor Hofer <viktor.hofer@microsoft.com>
Date: Wed, 8 Jul 2020 19:27:07 +0200
Subject: [PATCH 2/2] Update referenceAssemblies.props

---
 eng/referenceAssemblies.props | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/eng/referenceAssemblies.props b/eng/referenceAssemblies.props
index 3734c9a858062f..a5e0e553f12f7a 100644
--- a/eng/referenceAssemblies.props
+++ b/eng/referenceAssemblies.props
@@ -1,7 +1,7 @@
 <Project>
   <PropertyGroup Condition="'$(BuildAllProjects)' == 'true' and
                             !$(BuildTargetFramework.StartsWith('netstandard'))">
-    <AdditionalBuildTargetFrameworks Condition="!$(BuildTargetFramework.StartsWith('net45'))'">$(AdditionalBuildTargetFrameworks);netstandard2.0</AdditionalBuildTargetFrameworks>
+    <AdditionalBuildTargetFrameworks Condition="!$(BuildTargetFramework.StartsWith('net45'))">$(AdditionalBuildTargetFrameworks);netstandard2.0</AdditionalBuildTargetFrameworks>
     <AdditionalBuildTargetFrameworks Condition="!$(BuildTargetFramework.StartsWith('netcoreapp2.0')) and
                                                 !$(BuildTargetFramework.StartsWith('net4'))">$(AdditionalBuildTargetFrameworks);netstandard2.1</AdditionalBuildTargetFrameworks>
   </PropertyGroup>