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diff --git a/src/gui/opengl/platform/egl/qt_egl_p.h b/src/gui/opengl/platform/egl/qt_egl_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2020 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtGui 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 QT_EGL_P_H
+#define QT_EGL_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API. It exists purely as an
+// implementation detail. This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+// q(data/text)stream.h must be included before any header file that defines Status
+#include <QtCore/qdatastream.h>
+#include <QtCore/qtextstream.h>
+
+#ifdef QT_EGL_NO_X11
+# ifndef EGL_NO_X11
+#  define EGL_NO_X11
+# endif
+# ifndef MESA_EGL_NO_X11_HEADERS
+#  define MESA_EGL_NO_X11_HEADERS // MESA
+# endif
+# if !defined(Q_OS_INTEGRITY)
+#  define WIN_INTERFACE_CUSTOM   // NV
+# endif // Q_OS_INTEGRITY
+#endif  // QT_EGL_NO_X11
+
+#ifdef QT_EGL_WAYLAND
+# define WAYLAND // NV
+#endif // QT_EGL_WAYLAND
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+
+#include <stdint.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace QtInternal {
+
+template <class FromType, class ToType>
+struct QtEglConverter
+{
+    static inline ToType convert(FromType v)
+    { return v; }
+};
+
+template <>
+struct QtEglConverter<uint32_t, uintptr_t>
+{
+    static inline uintptr_t convert(uint32_t v)
+    { return v; }
+};
+
+#if QT_POINTER_SIZE > 4
+template <>
+struct QtEglConverter<uintptr_t, uint32_t>
+{
+    static inline uint32_t convert(uintptr_t v)
+    { return uint32_t(v); }
+};
+#endif
+
+template <>
+struct QtEglConverter<uint32_t, void *>
+{
+    static inline void *convert(uint32_t v)
+    { return reinterpret_cast<void *>(uintptr_t(v)); }
+};
+
+template <>
+struct QtEglConverter<void *, uint32_t>
+{
+    static inline uint32_t convert(void *v)
+    { return uintptr_t(v); }
+};
+
+} // QtInternal
+
+template <class ToType, class FromType>
+static inline ToType qt_egl_cast(FromType from)
+{ return QtInternal::QtEglConverter<FromType, ToType>::convert(from); }
+
+QT_END_NAMESPACE
+
+#endif // QT_EGL_P_H