msbuild: refactor to reduce rebuild events

* moves dolphin-specific settings out of Base.props
* creates exports.props for externals, allowing to easily import
  individual Externals
* corrects some cruft that accumulated and probably contributed
  to msbuild overbuilding

Source/Core/DolphinLib.vcxproj

@@ -12,6 +12,7 @@
   <ImportGroup Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
     <Import Project="$(VSPropsDir)Base.props" />
+    <Import Project="$(VSPropsDir)Base.Dolphin.props" />
     <Import Project="$(VSPropsDir)PCHUse.props" />
   </ImportGroup>
   <PropertyGroup Label="UserMacros" />
@@ -27,6 +28,36 @@
       <Project>{41279555-f94f-4ebc-99de-af863c10c5c4}</Project>
     </ProjectReference>
   </ItemGroup>
+  <Import Project="$(ExternalsDir)Bochs_disasm\exports.props" />
+  <Import Project="$(ExternalsDir)bzip2\exports.props" />
+  <Import Project="$(ExternalsDir)cpp-optparse\exports.props" />
+  <Import Project="$(ExternalsDir)cubeb\exports.props" />
+  <Import Project="$(ExternalsDir)curl\exports.props" />
+  <Import Project="$(ExternalsDir)discord-rpc\exports.props" />
+  <Import Project="$(ExternalsDir)ed25519\exports.props" />
+  <Import Project="$(ExternalsDir)enet\exports.props" />
+  <Import Project="$(ExternalsDir)FatFs\exports.props" />
+  <Import Project="$(ExternalsDir)fmt\exports.props" />
+  <Import Project="$(ExternalsDir)FreeSurround\exports.props" />
+  <Import Project="$(ExternalsDir)glslang\exports.props" />
+  <Import Project="$(ExternalsDir)imgui\exports.props" />
+  <Import Project="$(ExternalsDir)liblzma\exports.props" />
+  <Import Project="$(ExternalsDir)libspng\exports.props" />
+  <Import Project="$(ExternalsDir)libusb\exports.props" />
+  <Import Project="$(ExternalsDir)LZO\exports.props" />
+  <Import Project="$(ExternalsDir)mbedtls\exports.props" />
+  <Import Project="$(ExternalsDir)mGBA\exports.props" />
+  <Import Project="$(ExternalsDir)miniupnpc\exports.props" />
+  <Import Project="$(ExternalsDir)minizip\exports.props" />
+  <Import Project="$(ExternalsDir)picojson\exports.props" />
+  <Import Project="$(ExternalsDir)pugixml\exports.props" />
+  <Import Project="$(ExternalsDir)SDL\exports.props" />
+  <Import Project="$(ExternalsDir)SFML\exports.props" />
+  <Import Project="$(ExternalsDir)soundtouch\exports.props" />
+  <Import Project="$(ExternalsDir)spirv_cross\exports.props" />
+  <Import Project="$(ExternalsDir)xxhash\exports.props" />
+  <Import Project="$(ExternalsDir)zlib-ng\exports.props" />
+  <Import Project="$(ExternalsDir)zstd\exports.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets" />
 </Project>

Source/Core/DolphinNoGUI/DolphinNoGUI.vcxproj

@@ -12,6 +12,7 @@
   <ImportGroup Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
     <Import Project="$(VSPropsDir)Base.props" />
+    <Import Project="$(VSPropsDir)Base.Dolphin.props" />
     <Import Project="$(VSPropsDir)PCHUse.props" />
   </ImportGroup>
   <PropertyGroup Label="UserMacros" />
@@ -31,7 +32,8 @@
       <Project>{0e033be3-2e08-428e-9ae9-bc673efa12b5}</Project>
     </ProjectReference>
   </ItemGroup>
-  <Import Project="$(ExternalsDir)ExternalsReferenceAll.props" />
+  <Import Project="$(ExternalsDir)cpp-optparse\exports.props" />
+  <Import Project="$(ExternalsDir)fmt\exports.props" />
   <ItemGroup>
     <ClCompile Include="MainNoGUI.cpp" />
     <ClCompile Include="Platform.cpp" />

Source/Core/DolphinQt/DolphinQt.vcxproj

@@ -13,6 +13,7 @@
   <ImportGroup Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
     <Import Project="$(VSPropsDir)Base.props" />
+    <Import Project="$(VSPropsDir)Base.Dolphin.props" />
     <Import Project="$(VSPropsDir)QtCompile.props" />
   </ImportGroup>
   <PropertyGroup Label="UserMacros" />
@@ -403,7 +404,7 @@
       <Project>{0e033be3-2e08-428e-9ae9-bc673efa12b5}</Project>
     </ProjectReference>
     <!--
-      This project doesn't uses its own PCH during compile (because RTTI setting differs),
+      This project uses its own PCH during compile (because RTTI setting differs),
       but we must also link the "main" pch for the dependants (DolphinLib)
     -->
     <ProjectReference Include="$(SourceDir)PCH\pch.vcxproj">
@@ -413,7 +414,19 @@
       <UseLibraryDependencyInputs>true</UseLibraryDependencyInputs>
     </ProjectReference>
   </ItemGroup>
-  <Import Project="$(ExternalsDir)ExternalsReferenceAll.props" />
+  <Import Project="$(ExternalsDir)bzip2\exports.props" />
+  <Import Project="$(ExternalsDir)cpp-optparse\exports.props" />
+  <Import Project="$(ExternalsDir)discord-rpc\exports.props" />
+  <Import Project="$(ExternalsDir)enet\exports.props" />
+  <Import Project="$(ExternalsDir)fmt\exports.props" />
+  <Import Project="$(ExternalsDir)imgui\exports.props" />
+  <Import Project="$(ExternalsDir)liblzma\exports.props" />
+  <Import Project="$(ExternalsDir)mbedtls\exports.props" />
+  <Import Project="$(ExternalsDir)mGBA\exports.props" />
+  <Import Project="$(ExternalsDir)picojson\exports.props" />
+  <Import Project="$(ExternalsDir)SFML\exports.props" />
+  <Import Project="$(ExternalsDir)soundtouch\exports.props" />
+  <Import Project="$(ExternalsDir)zstd\exports.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets" />
   <!--Copy Exe, Data directory and DLLs which should be located in the executable directory-->

Source/Core/DolphinTool/DolphinTool.vcxproj

@@ -12,6 +12,7 @@
   <ImportGroup Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
     <Import Project="$(VSPropsDir)Base.props" />
+    <Import Project="$(VSPropsDir)Base.Dolphin.props" />
     <Import Project="$(VSPropsDir)PCHUse.props" />
   </ImportGroup>
   <PropertyGroup Label="UserMacros" />
@@ -26,7 +27,6 @@
       <Project>{0e033be3-2e08-428e-9ae9-bc673efa12b5}</Project>
     </ProjectReference>
   </ItemGroup>
-  <Import Project="$(ExternalsDir)ExternalsReferenceAll.props" />
   <ItemGroup>
     <ClCompile Include="ConvertCommand.cpp" />
     <ClCompile Include="VerifyCommand.cpp" />
@@ -34,6 +34,12 @@
     <ClCompile Include="ToolHeadlessPlatform.cpp" />
     <ClCompile Include="ToolMain.cpp" />
   </ItemGroup>
+  <Import Project="$(ExternalsDir)bzip2\exports.props" />
+  <Import Project="$(ExternalsDir)cpp-optparse\exports.props" />
+  <Import Project="$(ExternalsDir)fmt\exports.props" />
+  <Import Project="$(ExternalsDir)liblzma\exports.props" />
+  <Import Project="$(ExternalsDir)mbedtls\exports.props" />
+  <Import Project="$(ExternalsDir)zstd\exports.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>

Source/Core/WinUpdater/WinUpdater.vcxproj

@@ -12,6 +12,7 @@
   <ImportGroup Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
     <Import Project="$(VSPropsDir)Base.props" />
+    <Import Project="$(VSPropsDir)Base.Dolphin.props" />
     <Import Project="$(VSPropsDir)PCHUse.props" />
   </ImportGroup>
   <PropertyGroup Label="UserMacros" />
@@ -27,30 +28,18 @@
     <ProjectReference Include="$(CoreDir)DolphinLib.vcxproj">
       <Project>{D79392F7-06D6-4B4B-A39F-4D587C215D3A}</Project>
     </ProjectReference>
-    <ProjectReference Include="$(ExternalsDir)cpp-optparse\cpp-optparse.vcxproj">
-      <Project>{c636d9d1-82fe-42b5-9987-63b7d4836341}</Project>
-    </ProjectReference>
-    <ProjectReference Include="$(ExternalsDir)curl\curl.vcxproj">
-      <Project>{bb00605c-125f-4a21-b33b-7bf418322dcb}</Project>
-    </ProjectReference>
-    <ProjectReference Include="$(ExternalsDir)ed25519\ed25519.vcxproj">
-      <Project>{5bdf4b91-1491-4fb0-bc27-78e9a8e97dc3}</Project>
-    </ProjectReference>
-    <ProjectReference Include="$(ExternalsDir)fmt\fmt.vcxproj">
-      <Project>{4BC5A148-0AB3-440F-A980-A29B4B999190}</Project>
-    </ProjectReference>
-    <ProjectReference Include="$(ExternalsDir)mbedtls\mbedTLS.vcxproj">
-      <Project>{bdb6578b-0691-4e80-a46c-df21639fd3b8}</Project>
-    </ProjectReference>
-    <ProjectReference Include="$(ExternalsDir)zlib-ng\zlib-ng.vcxproj">
-      <Project>{F6EA7144-8D64-4EBB-A13E-76DFBD911EAE}</Project>
-    </ProjectReference>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\UpdaterCommon\UpdaterCommon.cpp" />
     <ClCompile Include="Main.cpp" />
     <ClCompile Include="WinUI.cpp" />
   </ItemGroup>
+  <Import Project="$(ExternalsDir)cpp-optparse\exports.props" />
+  <Import Project="$(ExternalsDir)curl\exports.props" />
+  <Import Project="$(ExternalsDir)ed25519\exports.props" />
+  <Import Project="$(ExternalsDir)fmt\exports.props" />
+  <Import Project="$(ExternalsDir)mbedtls\exports.props" />
+  <Import Project="$(ExternalsDir)zlib-ng\exports.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>