From 80993d670fe21b07364b525e7ea4c3832f5e597c Mon Sep 17 00:00:00 2001
From: David Matson <opencode@outlook.com>
Date: Wed, 12 Jan 2022 12:16:50 -0800
Subject: [PATCH] Set -pch correctly from targets when not using PCH (fixes
 #1072).

---
 nuget/Microsoft.Windows.CppWinRT.targets | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/nuget/Microsoft.Windows.CppWinRT.targets b/nuget/Microsoft.Windows.CppWinRT.targets
index e0e2fe91a..7f27cd3c4 100644
--- a/nuget/Microsoft.Windows.CppWinRT.targets
+++ b/nuget/Microsoft.Windows.CppWinRT.targets
@@ -804,7 +804,8 @@ $(XamlMetaDataProviderPch)
             Text="Please retarget to 10.0.17709.0 or later, or rename your PCH to 'pch.h'."/>
         <PropertyGroup Condition="('$(CppWinRTOverrideSDKReferences)' == 'true') or ('$(TargetPlatformVersion)' &gt; '10.0.17708.0')">
             <CppWinRTUsePrefixes Condition="'$(CppWinRTUsePrefixes)' == ''">true</CppWinRTUsePrefixes>
-            <CppWinRTPrecompiledHeader Condition="'$(CppWinRTPrecompiledHeader)' == ''">$(_PCH)</CppWinRTPrecompiledHeader>
+            <CppWinRTPrecompiledHeader Condition="'$(CppWinRTPrecompiledHeader)' == '' and '%(CLCompile.PrecompiledHeader)' != 'NotUsing'">$(_PCH)</CppWinRTPrecompiledHeader>
+            <CppWinRTPrecompiledHeader Condition="'$(CppWinRTPrecompiledHeader)' == '' and '%(CLCompile.PrecompiledHeader)' == 'NotUsing'">.</CppWinRTPrecompiledHeader>
         </PropertyGroup>
         <PropertyGroup>
             <CppWinRTCommandUsePrefixes Condition="'$(CppWinRTUsePrefixes)' == 'true'">-prefix</CppWinRTCommandUsePrefixes>