From f04cc5fc0d2f644cccb57543aae487ee30091924 Mon Sep 17 00:00:00 2001
From: Jeremy Kloth <jeremy.kloth@gmail.com>
Date: Mon, 10 Dec 2018 13:31:37 -0700
Subject: [3.6] bpo-35433: Properly detect installed SDK versions (GH-11009)

---
 PCbuild/build.bat    |  3 ++-
 PCbuild/python.props | 18 ++++++++++++------
 2 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/PCbuild/build.bat b/PCbuild/build.bat
index 5828b51..0df64ee 100644
--- a/PCbuild/build.bat
+++ b/PCbuild/build.bat
@@ -141,4 +141,5 @@ goto :eof
 
 :Version
 rem Display the current build version information
-%MSBUILD% "%dir%python.props" /t:ShowVersionInfo /v:m /nologo %1 %2 %3 %4 %5 %6 %7 %8 %9
+call "%dir%find_msbuild.bat" %MSBUILD%
+if not ERRORLEVEL 1 %MSBUILD% "%dir%pythoncore.vcxproj" /t:ShowVersionInfo /v:m /nologo %1 %2 %3 %4 %5 %6 %7 %8 %9
diff --git a/PCbuild/python.props b/PCbuild/python.props
index 570f7fa..b29669b 100644
--- a/PCbuild/python.props
+++ b/PCbuild/python.props
@@ -74,12 +74,17 @@
     possible version). Since we limit WINVER to Windows 7 anyway, it doesn't really
     matter which WinSDK version we use.
     -->
-    <_RegistryVersion>$(Registry:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v10.0@ProductVersion)</_RegistryVersion>
-    <_RegistryVersion Condition="$(_RegistryVersion) == ''">$(Registry:HKEY_LOCAL_MACHINE\WOW6432Node\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v10.0@ProductVersion)</_RegistryVersion>
-    <DefaultWindowsSDKVersion>10.0.15063.0</DefaultWindowsSDKVersion>
-    <DefaultWindowsSDKVersion Condition="$(_RegistryVersion) == '10.0.14393'">10.0.14393.0</DefaultWindowsSDKVersion>
-    <DefaultWindowsSDKVersion Condition="$(_RegistryVersion) == '10.0.10586'">10.0.10586.0</DefaultWindowsSDKVersion>
-    <DefaultWindowsSDKVersion Condition="$(_RegistryVersion) == '10.0.10240'">10.0.10240.0</DefaultWindowsSDKVersion>
+    <_KitsRoot>$(Registry:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v10.0@InstallationFolder)</_KitsRoot>
+    <_KitsRoot Condition="$(_KitsRoot) == ''">$(Registry:HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Microsoft SDKs\Windows\v10.0@InstallationFolder)</_KitsRoot>
+
+    <!-- The minimum allowed SDK version to use for building -->
+    <DefaultWindowsSDKVersion>10.0.10586.0</DefaultWindowsSDKVersion>
+    <DefaultWindowsSDKVersion Condition="Exists('$(_KitsRoot)\Platforms\UAP\10.0.14393.0')">10.0.14393.0</DefaultWindowsSDKVersion>
+    <DefaultWindowsSDKVersion Condition="Exists('$(_KitsRoot)\Platforms\UAP\10.0.15063.0')">10.0.15063.0</DefaultWindowsSDKVersion>
+  </PropertyGroup>
+  
+  <PropertyGroup Condition="$(WindowsTargetPlatformVersion) == ''">
+    <WindowsTargetPlatformVersion>$(DefaultWindowsSDKVersion)</WindowsTargetPlatformVersion>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(OverrideVersion)' == ''">
@@ -187,5 +192,6 @@
     <Message Importance="high" Text="Field3Value:         $(Field3Value)" />
     <Message Importance="high" Text="SysWinVer:           $(SysWinVer)" />
     <Message Importance="high" Text="PyDllName:           $(PyDllName)" />
+    <Message Importance="high" Text="WindowsSdkVersion:   $(TargetPlatformVersion)" />
   </Target>
 </Project>
-- 
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