bpo-41070: Simplify pyshellext.dll build (GH-21037)

Replace MIDL-generated file with manual GUID definition.
Use the same .def file for release and debug builds.
Update setup build to support latest toolset

Author: nnemkin

PC/pyshellext.cpp

@@ -12,15 +12,14 @@
 #include <olectl.h>
 #include <strsafe.h>
 
-#include "pyshellext_h.h"
-
 #define DDWM_UPDATEWINDOW (WM_USER+3)
 
 static HINSTANCE hModule;
 static CLIPFORMAT cfDropDescription;
 static CLIPFORMAT cfDragWindow;
 
-static const LPCWSTR CLASS_SUBKEY = L"Software\\Classes\\CLSID\\{BEA218D2-6950-497B-9434-61683EC065FE}";
+#define CLASS_GUID "{BEA218D2-6950-497B-9434-61683EC065FE}"
+static const LPCWSTR CLASS_SUBKEY = L"Software\\Classes\\CLSID\\" CLASS_GUID;
 static const LPCWSTR DRAG_MESSAGE = L"Open with %1";
 
 using namespace Microsoft::WRL;
@@ -121,8 +120,7 @@ HRESULT FilenameListCchCopyW(STRSAFE_LPWSTR pszDest, size_t cchDest, LPCWSTR psz
     return hr;
 }
 
-
-class PyShellExt : public RuntimeClass<
+class DECLSPEC_UUID(CLASS_GUID) PyShellExt : public RuntimeClass<
     RuntimeClassFlags<ClassicCom>,
     IDropTarget,
     IPersistFile
@@ -483,7 +481,7 @@ class PyShellExt : public RuntimeClass<
     }
 
     STDMETHODIMP GetClassID(CLSID *pClassID) {
-        *pClassID = CLSID_PyShellExt;
+        *pClassID = __uuidof(PyShellExt);
         return S_OK;
     }
 };

PC/pyshellext.def

@@ -1,4 +1,3 @@
-LIBRARY	"pyshellext"
 EXPORTS
   DllRegisterServer PRIVATE
   DllUnregisterServer PRIVATE

PC/pyshellext.idl

@@ -96,19 +96,17 @@
     <Link>
       <AdditionalDependencies>version.lib;shlwapi.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>Console</SubSystem>
-      <ModuleDefinitionFile>..\PC\pyshellext$(PyDebugExt).def</ModuleDefinitionFile>
+      <ModuleDefinitionFile>..\PC\pyshellext.def</ModuleDefinitionFile>
     </Link>
     <Midl>
       <CompileInterface>true</CompileInterface>
     </Midl>
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="..\PC\pyshellext.cpp" />
-    <Midl Include="..\PC\pyshellext.idl" />
   </ItemGroup>
   <ItemGroup>
     <None Include="..\PC\pyshellext.def" />
-    <None Include="..\PC\pyshellext_d.def" />
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="..\PC\pyshellext.rc" />

PC/pyshellext_d.def

@@ -15,11 +15,6 @@
       <Filter>Source Files</Filter>
     </ClCompile>
   </ItemGroup>
-  <ItemGroup>
-    <Midl Include="..\PC\pyshellext.idl">
-      <Filter>Source Files</Filter>
-    </Midl>
-  </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="..\PC\pyshellext.rc">
       <Filter>Resource Files</Filter>
@@ -29,8 +24,5 @@
     <None Include="..\PC\pyshellext.def">
       <Filter>Source Files</Filter>
     </None>
-    <None Include="..\PC\pyshellext_d.def">
-      <Filter>Source Files</Filter>
-    </None>
   </ItemGroup>
 </Project>

PCbuild/pyshellext.vcxproj

@@ -21,6 +21,9 @@
   <PropertyGroup Label="Globals">
     <Configuration Condition="'$(Configuration)' == ''">Release</Configuration>
     <Platform Condition="'$(Platform)' == ''">Win32</Platform>
+    <PlatformToolset Condition="'$(PlatformToolset)' == '' and ('$(MSBuildToolsVersion)' == '16.0' or '$(VisualStudioVersion)' == '16.0')">v142</PlatformToolset>
+    <PlatformToolset Condition="'$(PlatformToolset)' == '' and ('$(MSBuildToolsVersion)' == '15.0' or '$(VisualStudioVersion)' == '15.0')">v141</PlatformToolset>
+    <PlatformToolset Condition="'$(PlatformToolset)' == '' and '$(VCTargetsPath14)' != ''">v140</PlatformToolset>
     <PlatformToolset Condition="'$(PlatformToolset)' == '' and '$(VCTargetsPath14)' != ''">v140</PlatformToolset>
     <PlatformToolset Condition="'$(PlatformToolset)' == '' and '$(VCTargetsPath12)' != ''">v120</PlatformToolset>
     <ProjectGuid>{7A09B132-B3EE-499B-A700-A4B2157FEA3D}</ProjectGuid>
@@ -47,6 +50,8 @@
     </ClCompile>
     <Link>
       <AdditionalDependencies>comctl32.lib;gdiplus.lib;msimg32.lib;shlwapi.lib;wininet.lib;dutil.lib;balutil.lib;version.lib;uxtheme.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories Condition="'$(PlatformToolset)' == 'v142'">$(WixInstallPath)sdk\vs2017\lib\x86</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories Condition="'$(PlatformToolset)' == 'v141'">$(WixInstallPath)sdk\vs2017\lib\x86</AdditionalLibraryDirectories>
       <AdditionalLibraryDirectories Condition="'$(PlatformToolset)' == 'v140'">$(WixInstallPath)sdk\vs2015\lib\x86</AdditionalLibraryDirectories>
       <AdditionalLibraryDirectories Condition="'$(PlatformToolset)' == 'v120'">$(WixInstallPath)sdk\vs2013\lib\x86</AdditionalLibraryDirectories>
       <ModuleDefinitionFile>pythonba.def</ModuleDefinitionFile>