stdin.patch

diff --git i/src/qml/Qt6QmlMacros.cmake w/src/qml/Qt6QmlMacros.cmake
index 10320a87f08..e8c9bd1b0d3 100644
--- i/src/qml/Qt6QmlMacros.cmake
+++ w/src/qml/Qt6QmlMacros.cmake
@@ -2924,7 +2924,11 @@ function(_qt_internal_qml_type_registration target)
     set(type_registration_cpp_file "${target_binary_dir}/${type_registration_cpp_file_name}")
 
     # Enable evaluation of metatypes.json source interfaces
-    set_target_properties(${target} PROPERTIES QT_CONSUMES_METATYPES TRUE)
+    if(NOT TARGET qt_metatypes)
+        add_custom_target(qt_metatypes)
+        _qt_internal_assign_to_internal_targets_folder(qt_metatypes)
+    endif()
+    set_target_properties(qt_metatypes PROPERTIES QT_CONSUMES_METATYPES TRUE)
     set(genex_list "$<REMOVE_DUPLICATES:$<FILTER:$<TARGET_PROPERTY:${target},SOURCES>,INCLUDE,metatypes.json$>>")
     set(genex_main "$<JOIN:${genex_list},$<COMMA>>")
     file(GENERATE OUTPUT "${foreign_types_file}"