diff --git a/cmake/QtBaseHelpers.cmake b/cmake/QtBaseHelpers.cmake
index 981fcfafd46..e47b8d81bc9 100644
--- a/cmake/QtBaseHelpers.cmake
+++ b/cmake/QtBaseHelpers.cmake
@@ -151,10 +151,10 @@ endmacro()
 function(qt_internal_qtbase_install_wayland_files)
     qt_path_join(wlprotocols_build_dir
                  ${QT_BUILD_DIR}
-                 ${INSTALL_SHAREDIR}/qt6/wayland/protocols)
+                 ${INSTALL_QT_SHAREDIR}/wayland/protocols)
     qt_path_join(wlprotocols_install_dir
                  ${QT_INSTALL_DIR}
-                 ${INSTALL_SHAREDIR}/qt6/wayland/protocols)
+                 ${INSTALL_QT_SHAREDIR}/wayland/protocols)
 
     file(GLOB wlprotocols_subdirs
         LIST_DIRECTORIES TRUE
@@ -178,10 +178,10 @@ function(qt_internal_qtbase_install_wayland_files)
 
     qt_path_join(wlextensions_build_dir
                  ${QT_BUILD_DIR}
-                 ${INSTALL_SHAREDIR}/qt6/wayland/extensions)
+                 ${INSTALL_QT_SHAREDIR}/wayland/extensions)
     qt_path_join(wlextensions_install_dir
                  ${QT_INSTALL_DIR}
-                 ${INSTALL_SHAREDIR}/qt6/wayland/extensions)
+                 ${INSTALL_QT_SHAREDIR}/wayland/extensions)
 
     file(GLOB wlextensions_subdirs
         LIST_DIRECTORIES TRUE
diff --git a/cmake/QtBuildPathsHelpers.cmake b/cmake/QtBuildPathsHelpers.cmake
index 8d0f0bfa13a..bac0e352086 100644
--- a/cmake/QtBuildPathsHelpers.cmake
+++ b/cmake/QtBuildPathsHelpers.cmake
@@ -161,6 +161,8 @@ macro(qt_internal_setup_configure_install_paths)
     qt_configure_process_path(INSTALL_LIBDIR "lib" "Libraries [PREFIX/lib]")
     qt_configure_process_path(INSTALL_MKSPECSDIR "mkspecs" "Mkspecs files [PREFIX/mkspecs]")
     qt_configure_process_path(INSTALL_SHAREDIR "share" "Share files [PREFIX/share]")
+    qt_configure_process_path(INSTALL_QT_SHAREDIR "${INSTALL_SHAREDIR}/qt6"
+        "Qt namespaced sharedir [SHAREDIR/qt6]")
     qt_configure_process_path(INSTALL_ARCHDATADIR "." "Arch-dependent data [PREFIX]")
     qt_configure_process_path(INSTALL_PLUGINSDIR
                               "${INSTALL_ARCHDATADIR}/plugins"
diff --git a/cmake/QtHostInfoConfig.cmake.in b/cmake/QtHostInfoConfig.cmake.in
index eb4db00231e..959b7d848ed 100644
--- a/cmake/QtHostInfoConfig.cmake.in
+++ b/cmake/QtHostInfoConfig.cmake.in
@@ -19,6 +19,7 @@ set(@var_prefix@EXAMPLESDIR "@INSTALL_EXAMPLESDIR@")
 set(@var_prefix@TESTSDIR "@INSTALL_TESTSDIR@")
 set(@var_prefix@DESCRIPTIONSDIR "@INSTALL_DESCRIPTIONSDIR@")
 set(@var_prefix@SHAREDIR "@INSTALL_SHAREDIR@")
+set(@var_prefix@QT_SHAREDIR "@INSTALL_QT_SHAREDIR@")
 set(@var_prefix@QMAKE_MKSPEC "@QT_QMAKE_TARGET_MKSPEC@")
 set(@var_prefix@ARCH "@TEST_architecture_arch@")
 set(@var_prefix@SUBARCHS "@TEST_subarch_result@")
diff --git a/cmake/QtInstallPaths.cmake.in b/cmake/QtInstallPaths.cmake.in
index 88b8909e147..b433a860458 100644
--- a/cmake/QtInstallPaths.cmake.in
+++ b/cmake/QtInstallPaths.cmake.in
@@ -16,3 +16,4 @@ set(QT@PROJECT_VERSION_MAJOR@_INSTALL_TESTS "@INSTALL_TESTSDIR@")
 set(QT@PROJECT_VERSION_MAJOR@_INSTALL_TRANSLATIONS "@INSTALL_TRANSLATIONSDIR@")
 set(QT@PROJECT_VERSION_MAJOR@_INSTALL_DESCRIPTIONSDIR "@INSTALL_DESCRIPTIONSDIR@")
 set(QT@PROJECT_VERSION_MAJOR@_INSTALL_SHAREDIR "@INSTALL_SHAREDIR@")
+set(QT@PROJECT_VERSION_MAJOR@_INSTALL_QT_SHAREDIR "@INSTALL_QT_SHAREDIR@")