From 15b5ac4fd682d137f3721e91f7550f762257a492 Mon Sep 17 00:00:00 2001
From: Jason Sandlin <jasonsa@microsoft.com>
Date: Wed, 1 Apr 2026 16:58:24 -0700
Subject: [PATCH] libHttpClient.GDK.vcxproj: PDB conflict (C1041) when built
 with different LibHttpClientIncludeSuffix via AdditionalProperties

---
 Build/libHttpClient.GDK/libHttpClient.GDK.vcxproj | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Build/libHttpClient.GDK/libHttpClient.GDK.vcxproj b/Build/libHttpClient.GDK/libHttpClient.GDK.vcxproj
index 5843ca18..52dffc07 100644
--- a/Build/libHttpClient.GDK/libHttpClient.GDK.vcxproj
+++ b/Build/libHttpClient.GDK/libHttpClient.GDK.vcxproj
@@ -18,6 +18,16 @@
     <None Include="libHttpClient.GDK.def" />
   </ItemGroup>
   <Import Project="$([MSBuild]::GetPathOfFileAbove(libHttpClient.GDK.props))" />
+  <!-- Separate IntDir when building without suffix to avoid PDB conflicts with the default suffixed build -->
+  <PropertyGroup Condition="'$(LibHttpClientIncludeSuffix)' == 'false'">
+    <IntDir>$(HCIntRoot)\$(Platform)\$(Configuration)\$(MSBuildProjectName).nosuffix\</IntDir>
+  </PropertyGroup>
+  <ItemDefinitionGroup>
+    <ClCompile>
+      <!-- Allow concurrent PDB writes when solution and ProjectReference builds overlap -->
+      <AdditionalOptions>/FS %(AdditionalOptions)</AdditionalOptions>
+    </ClCompile>
+  </ItemDefinitionGroup>
   <ItemDefinitionGroup>
     <Link>
       <ModuleDefinitionFile>$(HCBuildRoot)\$(ProjectName)\$(ProjectName).def</ModuleDefinitionFile>