--- qt6-webengine-6.4.2.orig/src/core/api/CMakeLists.txt
+++ qt6-webengine-6.4.2/src/core/api/CMakeLists.txt
@@ -51,6 +51,7 @@ qt_internal_add_module(WebEngineCore
         Qt::Gui
         Qt::Network
         Qt::Quick
+        X11
 )
 
 set_target_properties(WebEngineCore PROPERTIES QTWEBENGINEPROCESS_NAME ${qtWebEngineProcessName})