diff --git a/src/corelib/CMakeLists.txt b/src/corelib/CMakeLists.txt
index 0c15c543f1..781c9aacf6 100644
--- a/src/corelib/CMakeLists.txt
+++ b/src/corelib/CMakeLists.txt
@@ -59,6 +59,7 @@ qt_internal_add_module(Core
         global/qsimd.cpp global/qsimd.h global/qsimd_p.h
         global/qsysinfo.h
         global/qsystemdetection.h
+        global/qtnamespacemacros.h
         global/qtypeinfo.h
         global/qvolatile_p.h
         global/q20algorithm.h
diff --git a/src/corelib/global/qglobal.h b/src/corelib/global/qglobal.h
index 130b18a19e..50fcc2474f 100644
--- a/src/corelib/global/qglobal.h
+++ b/src/corelib/global/qglobal.h
@@ -188,79 +188,7 @@ static_assert(!std::is_convertible_v<std::nullptr_t, bool>,
 #  define Q_STATIC_ASSERT_X(Condition, Message) Q_STATIC_ASSERT(Condition)
 #endif
 
-#ifdef __cplusplus
-
-#if !defined(QT_NAMESPACE) || defined(Q_MOC_RUN) /* user namespace */
-
-# define QT_PREPEND_NAMESPACE(name) ::name
-# define QT_USE_NAMESPACE
-# define QT_BEGIN_NAMESPACE
-# define QT_END_NAMESPACE
-# define QT_BEGIN_INCLUDE_NAMESPACE
-# define QT_END_INCLUDE_NAMESPACE
-#ifndef QT_BEGIN_MOC_NAMESPACE
-# define QT_BEGIN_MOC_NAMESPACE
-#endif
-#ifndef QT_END_MOC_NAMESPACE
-# define QT_END_MOC_NAMESPACE
-#endif
-# define QT_FORWARD_DECLARE_CLASS(name) class name;
-# define QT_FORWARD_DECLARE_STRUCT(name) struct name;
-# define QT_MANGLE_NAMESPACE(name) name
-
-#else /* user namespace */
-
-# define QT_PREPEND_NAMESPACE(name) ::QT_NAMESPACE::name
-# define QT_USE_NAMESPACE using namespace ::QT_NAMESPACE;
-# define QT_BEGIN_NAMESPACE namespace QT_NAMESPACE {
-# define QT_END_NAMESPACE }
-# define QT_BEGIN_INCLUDE_NAMESPACE }
-# define QT_END_INCLUDE_NAMESPACE namespace QT_NAMESPACE {
-#ifndef QT_BEGIN_MOC_NAMESPACE
-# define QT_BEGIN_MOC_NAMESPACE QT_USE_NAMESPACE
-#endif
-#ifndef QT_END_MOC_NAMESPACE
-# define QT_END_MOC_NAMESPACE
-#endif
-# define QT_FORWARD_DECLARE_CLASS(name) \
-    QT_BEGIN_NAMESPACE class name; QT_END_NAMESPACE \
-    using QT_PREPEND_NAMESPACE(name);
-
-# define QT_FORWARD_DECLARE_STRUCT(name) \
-    QT_BEGIN_NAMESPACE struct name; QT_END_NAMESPACE \
-    using QT_PREPEND_NAMESPACE(name);
-
-# define QT_MANGLE_NAMESPACE0(x) x
-# define QT_MANGLE_NAMESPACE1(a, b) a##_##b
-# define QT_MANGLE_NAMESPACE2(a, b) QT_MANGLE_NAMESPACE1(a,b)
-# define QT_MANGLE_NAMESPACE(name) QT_MANGLE_NAMESPACE2( \
-        QT_MANGLE_NAMESPACE0(name), QT_MANGLE_NAMESPACE0(QT_NAMESPACE))
-
-namespace QT_NAMESPACE {}
-
-# ifndef QT_BOOTSTRAPPED
-# ifndef QT_NO_USING_NAMESPACE
-   /*
-    This expands to a "using QT_NAMESPACE" also in _header files_.
-    It is the only way the feature can be used without too much
-    pain, but if people _really_ do not want it they can add
-    DEFINES += QT_NO_USING_NAMESPACE to their .pro files.
-    */
-   QT_USE_NAMESPACE
-# endif
-# endif
-
-#endif /* user namespace */
-
-#else /* __cplusplus */
-
-# define QT_BEGIN_NAMESPACE
-# define QT_END_NAMESPACE
-# define QT_USE_NAMESPACE
-# define QT_BEGIN_INCLUDE_NAMESPACE
-# define QT_END_INCLUDE_NAMESPACE
-
-#endif /* __cplusplus */
+# include <QtCore/qtnamespacemacros.h>
 
 #if defined(Q_OS_DARWIN) && !defined(QT_LARGEFILE_SUPPORT)
 #  define QT_LARGEFILE_SUPPORT 64
diff --git a/src/corelib/global/qtnamespacemacros.h b/src/corelib/global/qtnamespacemacros.h
new file mode 100644
index 0000000000..672c761739
--- /dev/null
+++ b/src/corelib/global/qtnamespacemacros.h
@@ -0,0 +1,117 @@
+/****************************************************************************
+**
+** Copyright (C) 2022 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QTNAMESPACEMACROS_H
+#define QTNAMESPACEMACROS_H
+
+#ifdef __cplusplus
+
+#if !defined(QT_NAMESPACE) || defined(Q_MOC_RUN) /* user namespace */
+
+# define QT_PREPEND_NAMESPACE(name) ::name
+# define QT_USE_NAMESPACE
+# define QT_BEGIN_NAMESPACE
+# define QT_END_NAMESPACE
+# define QT_BEGIN_INCLUDE_NAMESPACE
+# define QT_END_INCLUDE_NAMESPACE
+#ifndef QT_BEGIN_MOC_NAMESPACE
+# define QT_BEGIN_MOC_NAMESPACE
+#endif
+#ifndef QT_END_MOC_NAMESPACE
+# define QT_END_MOC_NAMESPACE
+#endif
+# define QT_FORWARD_DECLARE_CLASS(name) class name;
+# define QT_FORWARD_DECLARE_STRUCT(name) struct name;
+# define QT_MANGLE_NAMESPACE(name) name
+
+#else /* user namespace */
+
+# define QT_PREPEND_NAMESPACE(name) ::QT_NAMESPACE::name
+# define QT_USE_NAMESPACE using namespace ::QT_NAMESPACE;
+# define QT_BEGIN_NAMESPACE namespace QT_NAMESPACE {
+# define QT_END_NAMESPACE }
+# define QT_BEGIN_INCLUDE_NAMESPACE }
+# define QT_END_INCLUDE_NAMESPACE namespace QT_NAMESPACE {
+#ifndef QT_BEGIN_MOC_NAMESPACE
+# define QT_BEGIN_MOC_NAMESPACE QT_USE_NAMESPACE
+#endif
+#ifndef QT_END_MOC_NAMESPACE
+# define QT_END_MOC_NAMESPACE
+#endif
+# define QT_FORWARD_DECLARE_CLASS(name) \
+    QT_BEGIN_NAMESPACE class name; QT_END_NAMESPACE \
+    using QT_PREPEND_NAMESPACE(name);
+
+# define QT_FORWARD_DECLARE_STRUCT(name) \
+    QT_BEGIN_NAMESPACE struct name; QT_END_NAMESPACE \
+    using QT_PREPEND_NAMESPACE(name);
+
+# define QT_MANGLE_NAMESPACE0(x) x
+# define QT_MANGLE_NAMESPACE1(a, b) a##_##b
+# define QT_MANGLE_NAMESPACE2(a, b) QT_MANGLE_NAMESPACE1(a,b)
+# define QT_MANGLE_NAMESPACE(name) QT_MANGLE_NAMESPACE2( \
+        QT_MANGLE_NAMESPACE0(name), QT_MANGLE_NAMESPACE0(QT_NAMESPACE))
+
+namespace QT_NAMESPACE {}
+
+# ifndef QT_BOOTSTRAPPED
+# ifndef QT_NO_USING_NAMESPACE
+   /*
+    This expands to a "using QT_NAMESPACE" also in _header files_.
+    It is the only way the feature can be used without too much
+    pain, but if people _really_ do not want it they can add
+    DEFINES += QT_NO_USING_NAMESPACE to their .pro files.
+    */
+   QT_USE_NAMESPACE
+# endif
+# endif
+
+#endif /* user namespace */
+
+#else /* __cplusplus */
+
+# define QT_BEGIN_NAMESPACE
+# define QT_END_NAMESPACE
+# define QT_USE_NAMESPACE
+# define QT_BEGIN_INCLUDE_NAMESPACE
+# define QT_END_INCLUDE_NAMESPACE
+
+#endif /* __cplusplus */
+
+#endif /* QTNAMESPACEMACROS_H */