QmlDesigner: fix build with MSVC2022

Change-Id: Ifef972c0b8ef0f4810c7c55d87d1d21cdc0d1801
Reviewed-by: Marco Bubke <marco.bubke@qt.io>

cmake/Utils.cmake

@@ -100,4 +100,22 @@ function(configure_qml_designer Qt6_VERSION)
     env_with_default("QTC_IS_SUPPORTED_PROJECTSTORAGE_QT" ENV_QTC_IS_SUPPORTED_PROJECTSTORAGE_QT ${QTC_IS_SUPPORTED_PROJECTSTORAGE_QT_DEFAULT})
     option(IS_SUPPORTED_PROJECTSTORAGE_QT "IS_SUPPORTED_PROJECTSTORAGE_QT" ${ENV_QTC_IS_SUPPORTED_PROJECTSTORAGE_QT})
     add_feature_info("IS_SUPPORTED_PROJECTSTORAGE_QT" ${IS_SUPPORTED_PROJECTSTORAGE_QT} "is ${IS_SUPPORTED_PROJECTSTORAGE_QT}")
+
+    # to enable define QML_DOM_MSVC2019_COMPAT if necessary, see QTBUG-127761
+    if(NOT DEFINED QT_BUILT_WITH_MSVC2019)
+        get_target_property(QT_QMAKE_EXECUTABLE Qt6::qmake IMPORTED_LOCATION)
+
+        execute_process(
+            COMMAND dumpbin /headers ${QT_QMAKE_EXECUTABLE} | findstr /c:"linker version"
+            OUTPUT_VARIABLE DUMPBIN_OUTPUT
+        )
+
+        string(FIND "${DUMPBIN_OUTPUT}" "14.2" QT_BUILT_WITH_MSVC2019)
+
+        if(QT_BUILT_WITH_MSVC2019 GREATER -1)
+            set(QT_BUILT_WITH_MSVC2019 TRUE CACHE BOOL "Qt was built with MSVC 2019")
+        else()
+            set(QT_BUILT_WITH_MSVC2019 FALSE CACHE BOOL "Qt was not built with MSVC 2019")
+        endif()
+    endif()
 endfunction()

src/plugins/qmldesigner/libs/designercore/CMakeLists.txt

@@ -368,11 +368,15 @@ extend_qtc_library(QmlDesignerCore
     storagecachefwd.h
 )
 
+extend_qtc_library(QmlDesignerCore
+    CONDITION QT_BUILT_WITH_MSVC2019
+    DEFINES QML_DOM_MSVC2019_COMPAT
+)
+
 extend_qtc_library(QmlDesignerCore
   SOURCES_PREFIX projectstorage
   PUBLIC_INCLUDES projectstorage
   SOURCES_PROPERTIES SKIP_AUTOGEN ON
-  DEFINES QML_DOM_MSVC2019_COMPAT # can be removed for Qt 6.8
   SOURCES
     commontypecache.h
     directorypathcompressor.h