windows: distribute vcredist loose files

Data/license.txt

@@ -337,3 +337,8 @@ proprietary programs.  If your program is a subroutine library, you may
 consider it more useful to permit linking proprietary applications with the
 library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.
+
+
+This program uses VC++ Redistributable code. The license for those object
+files can be found at:
+https://visualstudio.microsoft.com/license-terms/vs2022-ga-community/

Source/Core/DolphinQt/CMakeLists.txt

@@ -440,6 +440,28 @@ if(WIN32)
     COMMAND ${CMAKE_COMMAND} -E copy_if_different "${CMAKE_CURRENT_SOURCE_DIR}/qt.conf.win" "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/qt.conf"
   )
 
+  # Copy VC++ Redist.
+  # NOTE This *intentionally* does not copy debug redist files.
+  # TODO This should really occur for any executable target.
+  # TODO Actually use cmake 'install' and InstallRequiredSystemLibraries.
+  if(MSVC_C_ARCHITECTURE_ID)
+    string(TOLOWER "${MSVC_C_ARCHITECTURE_ID}" CMAKE_MSVC_ARCH)
+  elseif(MSVC_CXX_ARCHITECTURE_ID)
+    string(TOLOWER "${MSVC_CXX_ARCHITECTURE_ID}" CMAKE_MSVC_ARCH)
+  else()
+    set(CMAKE_MSVC_ARCH x86)
+  endif()
+  set(MSVC_REDIST_NAME VC${MSVC_TOOLSET_VERSION})
+  find_path(MSVC_REDIST_DIR NAMES ${CMAKE_MSVC_ARCH}/Microsoft.${MSVC_REDIST_NAME}.CRT)
+  mark_as_advanced(MSVC_REDIST_DIR)
+  set(MSVC_CRT_DIR "${MSVC_REDIST_DIR}/${CMAKE_MSVC_ARCH}/Microsoft.${MSVC_REDIST_NAME}.CRT")
+  file(GLOB MSVC_REDIST_DLLS "${MSVC_CRT_DIR}/*.dll")
+  foreach(MsvcRedistDll IN LISTS MSVC_REDIST_DLLS)
+    add_custom_command(TARGET dolphin-emu POST_BUILD
+    COMMAND ${CMAKE_COMMAND} -E copy_if_different "${MsvcRedistDll}" "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}"
+    )
+  endforeach()
+
   # Delegate to Qt's official deployment binary on Windows to copy over the necessary Qt-specific libraries, etc.
   get_target_property(MOC_EXECUTABLE_LOCATION Qt${QT_VERSION_MAJOR}::moc IMPORTED_LOCATION)
   get_filename_component(QT_BINARY_DIRECTORY "${MOC_EXECUTABLE_LOCATION}" DIRECTORY)

Source/VSProps/Base.Dolphin.props

@@ -84,4 +84,16 @@
       <AdditionalOptions>/NODEFAULTLIB:msvcrt %(AdditionalOptions)</AdditionalOptions>
     </Link>
   </ItemDefinitionGroup>
+
+  <Target Name="CopyVCRedist" AfterTargets="Build" Condition="'$(ConfigurationType)'=='Application'">
+    <ItemGroup>
+      <VCRedistSourceFiles
+        Include="$(VCToolsRedistInstallDir)$(Platform)\Microsoft.VC$(PlatformToolsetVersion).CRT\*.dll" />
+    </ItemGroup>
+    <Copy
+      SourceFiles="@(VCRedistSourceFiles)"
+      DestinationFolder="$(BinaryOutputDir)"
+      SkipUnchangedFiles="true"
+    />
+  </Target>
 </Project>