From c8036b89e2841aece28f15c25cd22626f9eda757 Mon Sep 17 00:00:00 2001
From: Sam Harwell <Sam.Harwell@microsoft.com>
Date: Fri, 15 Mar 2019 11:04:30 -0500
Subject: [PATCH] Avoid generating binding redirects for missing assemblies

Works around Microsoft/msbuild#4239.
---
 eng/targets/GenerateCompilerExecutableBindingRedirects.targets | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/eng/targets/GenerateCompilerExecutableBindingRedirects.targets b/eng/targets/GenerateCompilerExecutableBindingRedirects.targets
index ba01623a2a4..99b03f21f3a 100644
--- a/eng/targets/GenerateCompilerExecutableBindingRedirects.targets
+++ b/eng/targets/GenerateCompilerExecutableBindingRedirects.targets
@@ -14,7 +14,8 @@
           DependsOnTargets="ResolveAssemblyReferences"
           Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework'">
     <ItemGroup>
-      <SuggestedBindingRedirects Include="@(ReferencePath->'%(FusionName)')" MaxVersion="%(ReferencePath.Version)" KeepMetadata="-none-" Condition="'%(ReferencePath.FrameworkFile)' != 'true'" />
+      <!-- Note: ReferencePath.Version can be missing for design time builds prior to the first full build. -->
+      <SuggestedBindingRedirects Include="@(ReferencePath->'%(FusionName)')" MaxVersion="%(ReferencePath.Version)" KeepMetadata="-none-" Condition="'%(ReferencePath.FrameworkFile)' != 'true' and '%(ReferencePath.Version)' != ''" />
     </ItemGroup>
   </Target>
 </Project>
\ No newline at end of file
-- 
GitLab