diff --git a/5.15.2/qtbase/src/corelib/global/qoperatingsystemversion.cpp b/5.15.2/qtbase/src/corelib/global/qoperatingsystemversion.cpp
new file mode 100644
index 0000000..9768690
--- /dev/null
+++ b/5.15.2/qtbase/src/corelib/global/qoperatingsystemversion.cpp
@@ -0,0 +1,569 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qoperatingsystemversion.h"
+#if !defined(Q_OS_DARWIN) && !defined(Q_OS_WIN)
+#include "qoperatingsystemversion_p.h"
+#endif
+
+#if defined(Q_OS_DARWIN)
+#include <QtCore/private/qcore_mac_p.h>
+#endif
+
+#include <qversionnumber.h>
+#include <qdebug.h>
+
+#if defined(Q_OS_ANDROID) && !defined(Q_OS_ANDROID_EMBEDDED)
+#include <private/qjni_p.h>
+#endif
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QOperatingSystemVersion
+    \inmodule QtCore
+    \since 5.9
+    \brief The QOperatingSystemVersion class provides information about the
+    operating system version.
+
+    Unlike other version functions in QSysInfo, QOperatingSystemVersion provides
+    access to the full version number that \a developers typically use to vary
+    behavior or determine whether to enable APIs or features based on the
+    operating system version (as opposed to the kernel version number or
+    marketing version).
+
+    This class is also a complete replacement for QSysInfo::macVersion and
+    QSysInfo::windowsVersion, additionally providing access to the third (micro)
+    version number component.
+
+    Presently, Android, Apple Platforms (iOS, macOS, tvOS, and watchOS),
+    and Windows are supported.
+
+    The \a majorVersion(), \a minorVersion(), and \a microVersion() functions
+    return the parts of the operating system version number based on:
+
+    \table
+        \header
+            \li Platforms
+            \li Value
+        \row
+            \li Android
+            \li result of parsing
+                \l{https://developer.android.com/reference/android/os/Build.VERSION.html#RELEASE}{android.os.Build.VERSION.RELEASE}
+                using QVersionNumber, with a fallback to
+                \l{https://developer.android.com/reference/android/os/Build.VERSION.html#SDK_INT}{android.os.Build.VERSION.SDK_INT}
+                to determine the major and minor version component if the former
+                fails
+        \row
+            \li Apple Platforms
+            \li majorVersion, minorVersion, and patchVersion from
+                \l{https://developer.apple.com/reference/foundation/nsprocessinfo/1410906-operatingsystemversion?language=objc}{NSProcessInfo.operatingSystemVersion}
+        \row
+            \li Windows
+            \li dwMajorVersion, dwMinorVersion, and dwBuildNumber from
+                \l{https://msdn.microsoft.com/en-us/library/mt723418.aspx}{RtlGetVersion} -
+                note that this function ALWAYS return the version number of the
+                underlying operating system, as opposed to the shim underneath
+                GetVersionEx that hides the real version number if the
+                application is not manifested for that version of the OS
+    \endtable
+
+    Because QOperatingSystemVersion stores both a version number and an OS type, the OS type
+    can be taken into account when performing comparisons. For example, on a macOS system running
+    macOS Sierra (v10.12), the following expression will return \c false even though the
+    major version number component of the object on the left hand side of the expression (10) is
+    greater than that of the object on the right (9):
+
+    \snippet code/src_corelib_global_qoperatingsystemversion.cpp 0
+
+    This allows expressions for multiple operating systems to be joined with a logical OR operator
+    and still work as expected. For example:
+
+    \snippet code/src_corelib_global_qoperatingsystemversion.cpp 1
+
+    A more naive comparison algorithm might incorrectly return true on all versions of macOS,
+    including Mac OS 9. This behavior is achieved by overloading the comparison operators to return
+    \c false whenever the OS types of the QOperatingSystemVersion instances being compared do not
+    match. Be aware that due to this it can be the case \c x >= y and \c x < y are BOTH \c false
+    for the same instances of \c x and \c y.
+*/
+
+/*!
+    \enum QOperatingSystemVersion::OSType
+
+    This enum provides symbolic names for the various operating
+    system families supported by QOperatingSystemVersion.
+
+    \value Android      The Google Android operating system.
+    \value IOS          The Apple iOS operating system.
+    \value MacOS        The Apple macOS operating system.
+    \value TvOS         The Apple tvOS operating system.
+    \value WatchOS      The Apple watchOS operating system.
+    \value Windows      The Microsoft Windows operating system.
+
+    \value Unknown      An unknown or unsupported operating system.
+*/
+
+/*!
+    \fn QOperatingSystemVersion::QOperatingSystemVersion(OSType osType, int vmajor, int vminor = -1, int vmicro = -1)
+
+    Constructs a QOperatingSystemVersion consisting of the OS type \a osType, and
+    major, minor, and micro version numbers \a vmajor, \a vminor and \a vmicro, respectively.
+*/
+
+/*!
+    \fn QOperatingSystemVersion QOperatingSystemVersion::current()
+
+    Returns a QOperatingSystemVersion indicating the current OS and its version number.
+
+    \sa currentType()
+*/
+#if !defined(Q_OS_DARWIN) && !defined(Q_OS_WIN)
+QOperatingSystemVersion QOperatingSystemVersion::current()
+{
+    QOperatingSystemVersion version;
+    version.m_os = currentType();
+#if defined(Q_OS_ANDROID) && !defined(Q_OS_ANDROID_EMBEDDED)
+#ifndef QT_BOOTSTRAPPED
+    const QVersionNumber v = QVersionNumber::fromString(QJNIObjectPrivate::getStaticObjectField(
+        "android/os/Build$VERSION", "RELEASE", "Ljava/lang/String;").toString());
+    if (!v.isNull()) {
+        version.m_major = v.majorVersion();
+        version.m_minor = v.minorVersion();
+        version.m_micro = v.microVersion();
+        return version;
+    }
+#endif
+
+    version.m_major = -1;
+    version.m_minor = -1;
+
+    static const struct {
+        uint major : 4;
+        uint minor : 4;
+    } versions[] = {
+        { 1, 0 }, // API level 1
+        { 1, 1 }, // API level 2
+        { 1, 5 }, // API level 3
+        { 1, 6 }, // API level 4
+        { 2, 0 }, // API level 5
+        { 2, 0 }, // API level 6
+        { 2, 1 }, // API level 7
+        { 2, 2 }, // API level 8
+        { 2, 3 }, // API level 9
+        { 2, 3 }, // API level 10
+        { 3, 0 }, // API level 11
+        { 3, 1 }, // API level 12
+        { 3, 2 }, // API level 13
+        { 4, 0 }, // API level 14
+        { 4, 0 }, // API level 15
+        { 4, 1 }, // API level 16
+        { 4, 2 }, // API level 17
+        { 4, 3 }, // API level 18
+        { 4, 4 }, // API level 19
+        { 4, 4 }, // API level 20
+        { 5, 0 }, // API level 21
+        { 5, 1 }, // API level 22
+        { 6, 0 }, // API level 23
+        { 7, 0 }, // API level 24
+        { 7, 1 }, // API level 25
+        { 8, 0 }, // API level 26
+    };
+
+    // This will give us at least the first 2 version components
+    const size_t versionIdx = size_t(QJNIObjectPrivate::getStaticField<jint>(
+        "android/os/Build$VERSION", "SDK_INT")) - 1;
+    if (versionIdx < sizeof(versions) / sizeof(versions[0])) {
+        version.m_major = versions[versionIdx].major;
+        version.m_minor = versions[versionIdx].minor;
+    }
+
+    // API level 6 was exactly version 2.0.1
+    version.m_micro = versionIdx == 5 ? 1 : -1;
+#else
+    version.m_major = -1;
+    version.m_minor = -1;
+    version.m_micro = -1;
+#endif
+    return version;
+}
+#endif
+
+static inline int compareVersionComponents(int lhs, int rhs)
+{
+    return lhs >= 0 && rhs >= 0 ? lhs - rhs : 0;
+}
+
+int QOperatingSystemVersion::compare(const QOperatingSystemVersion &v1,
+                                     const QOperatingSystemVersion &v2)
+{
+    if (v1.m_major == v2.m_major) {
+        if (v1.m_minor == v2.m_minor) {
+            return compareVersionComponents(v1.m_micro, v2.m_micro);
+        }
+        return compareVersionComponents(v1.m_minor, v2.m_minor);
+    }
+    return compareVersionComponents(v1.m_major, v2.m_major);
+}
+
+/*!
+    \fn int QOperatingSystemVersion::majorVersion() const
+
+    Returns the major version number, that is, the first segment of the
+    operating system's version number.
+
+    See the main class documentation for what the major version number is on a given
+    operating system.
+
+    -1 indicates an unknown or absent version number component.
+
+    \sa minorVersion(), microVersion()
+*/
+
+/*!
+    \fn int QOperatingSystemVersion::minorVersion() const
+
+    Returns the minor version number, that is, the second segment of the
+    operating system's version number.
+
+    See the main class documentation for what the minor version number is on a given
+    operating system.
+
+    -1 indicates an unknown or absent version number component.
+
+    \sa majorVersion(), microVersion()
+*/
+
+/*!
+    \fn int QOperatingSystemVersion::microVersion() const
+
+    Returns the micro version number, that is, the third segment of the
+    operating system's version number.
+
+    See the main class documentation for what the micro version number is on a given
+    operating system.
+
+    -1 indicates an unknown or absent version number component.
+
+    \sa majorVersion(), minorVersion()
+*/
+
+/*!
+    \fn int QOperatingSystemVersion::segmentCount() const
+
+    Returns the number of integers stored in the version number.
+*/
+
+/*!
+    \fn QOperatingSystemVersion::OSType QOperatingSystemVersion::type() const
+
+    Returns the OS type identified by the QOperatingSystemVersion.
+
+    \sa name()
+*/
+
+/*!
+    \fn QOperatingSystemVersion::OSType QOperatingSystemVersion::currentType()
+
+    Returns the current OS type without constructing a QOperatingSystemVersion instance.
+
+    \since 5.10
+
+    \sa current()
+*/
+
+/*!
+    \fn QString QOperatingSystemVersion::name() const
+
+    Returns a string representation of the OS type identified by the QOperatingSystemVersion.
+
+    \sa type()
+*/
+QString QOperatingSystemVersion::name() const
+{
+    switch (type()) {
+    case QOperatingSystemVersion::Windows:
+        return QStringLiteral("Windows");
+    case QOperatingSystemVersion::MacOS: {
+        if (majorVersion() < 10)
+            return QStringLiteral("Mac OS");
+        if (majorVersion() == 10 && minorVersion() < 8)
+            return QStringLiteral("Mac OS X");
+        if (majorVersion() == 10 && minorVersion() < 12)
+            return QStringLiteral("OS X");
+        return QStringLiteral("macOS");
+    }
+    case QOperatingSystemVersion::IOS: {
+        if (majorVersion() < 4)
+            return QStringLiteral("iPhone OS");
+        return QStringLiteral("iOS");
+    }
+    case QOperatingSystemVersion::TvOS:
+        return QStringLiteral("tvOS");
+    case QOperatingSystemVersion::WatchOS:
+        return QStringLiteral("watchOS");
+    case QOperatingSystemVersion::Android:
+        return QStringLiteral("Android");
+    case QOperatingSystemVersion::Unknown:
+    default:
+        return QString();
+    }
+}
+
+/*!
+    \fn bool QOperatingSystemVersion::isAnyOfType(std::initializer_list<OSType> types) const
+
+    Returns whether the OS type identified by the QOperatingSystemVersion
+    matches any of the OS types in \a types.
+*/
+bool QOperatingSystemVersion::isAnyOfType(std::initializer_list<OSType> types) const
+{
+    for (const auto &t : qAsConst(types)) {
+        if (type() == t)
+            return true;
+    }
+    return false;
+}
+
+/*!
+    \variable QOperatingSystemVersion::Windows7
+    \brief a version corresponding to Windows 7 (version 6.1).
+    \since 5.9
+ */
+const QOperatingSystemVersion QOperatingSystemVersion::Windows7 =
+    QOperatingSystemVersion(QOperatingSystemVersion::Windows, 6, 1);
+
+/*!
+    \variable QOperatingSystemVersion::Windows8
+    \brief a version corresponding to Windows 8 (version 6.2).
+    \since 5.9
+ */
+const QOperatingSystemVersion QOperatingSystemVersion::Windows8 =
+    QOperatingSystemVersion(QOperatingSystemVersion::Windows, 6, 2);
+
+/*!
+    \variable QOperatingSystemVersion::Windows8_1
+    \brief a version corresponding to Windows 8.1 (version 6.3).
+    \since 5.9
+ */
+const QOperatingSystemVersion QOperatingSystemVersion::Windows8_1 =
+    QOperatingSystemVersion(QOperatingSystemVersion::Windows, 6, 3);
+
+/*!
+    \variable QOperatingSystemVersion::Windows10
+    \brief a version corresponding to Windows 10 (version 10.0).
+    \since 5.9
+ */
+const QOperatingSystemVersion QOperatingSystemVersion::Windows10 =
+    QOperatingSystemVersion(QOperatingSystemVersion::Windows, 10);
+
+/*!
+    \variable QOperatingSystemVersion::OSXMavericks
+    \brief a version corresponding to OS X Mavericks (version 10.9).
+    \since 5.9
+ */
+const QOperatingSystemVersion QOperatingSystemVersion::OSXMavericks =
+    QOperatingSystemVersion(QOperatingSystemVersion::MacOS, 10, 9);
+
+/*!
+    \variable QOperatingSystemVersion::OSXYosemite
+    \brief a version corresponding to OS X Yosemite (version 10.10).
+    \since 5.9
+ */
+const QOperatingSystemVersion QOperatingSystemVersion::OSXYosemite =
+    QOperatingSystemVersion(QOperatingSystemVersion::MacOS, 10, 10);
+
+/*!
+    \variable QOperatingSystemVersion::OSXElCapitan
+    \brief a version corresponding to OS X El Capitan (version 10.11).
+    \since 5.9
+ */
+const QOperatingSystemVersion QOperatingSystemVersion::OSXElCapitan =
+    QOperatingSystemVersion(QOperatingSystemVersion::MacOS, 10, 11);
+
+/*!
+    \variable QOperatingSystemVersion::MacOSSierra
+    \brief a version corresponding to macOS Sierra (version 10.12).
+    \since 5.9
+ */
+const QOperatingSystemVersion QOperatingSystemVersion::MacOSSierra =
+    QOperatingSystemVersion(QOperatingSystemVersion::MacOS, 10, 12);
+
+/*!
+    \variable QOperatingSystemVersion::MacOSHighSierra
+    \brief a version corresponding to macOS High Sierra (version 10.13).
+    \since 5.9.1
+ */
+const QOperatingSystemVersion QOperatingSystemVersion::MacOSHighSierra =
+    QOperatingSystemVersion(QOperatingSystemVersion::MacOS, 10, 13);
+
+/*!
+    \variable QOperatingSystemVersion::MacOSMojave
+    \brief a version corresponding to macOS Mojave (version 10.14).
+    \since 5.11.2
+ */
+const QOperatingSystemVersion QOperatingSystemVersion::MacOSMojave =
+    QOperatingSystemVersion(QOperatingSystemVersion::MacOS, 10, 14);
+
+/*!
+    \variable QOperatingSystemVersion::MacOSCatalina
+    \brief a version corresponding to macOS Catalina (version 10.15).
+    \since 5.12.5
+ */
+const QOperatingSystemVersion QOperatingSystemVersion::MacOSCatalina =
+    QOperatingSystemVersion(QOperatingSystemVersion::MacOS, 10, 15);
+
+/*!
+    \variable QOperatingSystemVersion::MacOSBigSur
+    \brief a version corresponding to macOS Big Sur
+
+    The actual version number depends on whether the application was built
+    using the Xcode 12 SDK. If it was, the version number corresponds
+    to macOS 11.0. If not it will correspond to macOS 10.16.
+
+    By comparing QOperatingSystemVersion::current() to this constant
+    you will always end up comparing to the right version number.
+    \since 6.0
+ */
+const QOperatingSystemVersion QOperatingSystemVersion::MacOSBigSur = [] {
+#if defined(Q_OS_DARWIN)
+    if (QMacVersion::buildSDK(QMacVersion::ApplicationBinary) >= QOperatingSystemVersion(QOperatingSystemVersion::MacOS, 10, 16))
+        return QOperatingSystemVersion(QOperatingSystemVersion::MacOS, 11, 0);
+    else
+#endif
+        return QOperatingSystemVersion(QOperatingSystemVersion::MacOS, 10, 16);
+}();
+
+/*!
+    \variable QOperatingSystemVersion::AndroidJellyBean
+    \brief a version corresponding to Android Jelly Bean (version 4.1, API level 16).
+    \since 5.9
+ */
+const QOperatingSystemVersion QOperatingSystemVersion::AndroidJellyBean =
+    QOperatingSystemVersion(QOperatingSystemVersion::Android, 4, 1);
+
+/*!
+    \variable QOperatingSystemVersion::AndroidJellyBean_MR1
+    \brief a version corresponding to Android Jelly Bean, maintenance release 1
+    (version 4.2, API level 17).
+    \since 5.9
+ */
+const QOperatingSystemVersion QOperatingSystemVersion::AndroidJellyBean_MR1 =
+    QOperatingSystemVersion(QOperatingSystemVersion::Android, 4, 2);
+
+/*!
+    \variable QOperatingSystemVersion::AndroidJellyBean_MR2
+    \brief a version corresponding to Android Jelly Bean, maintenance release 2
+    (version 4.3, API level 18).
+    \since 5.9
+ */
+const QOperatingSystemVersion QOperatingSystemVersion::AndroidJellyBean_MR2 =
+    QOperatingSystemVersion(QOperatingSystemVersion::Android, 4, 3);
+
+/*!
+    \variable QOperatingSystemVersion::AndroidKitKat
+    \brief a version corresponding to Android KitKat (versions 4.4 & 4.4W, API levels 19 & 20).
+    \since 5.9
+ */
+const QOperatingSystemVersion QOperatingSystemVersion::AndroidKitKat =
+    QOperatingSystemVersion(QOperatingSystemVersion::Android, 4, 4);
+
+/*!
+    \variable QOperatingSystemVersion::AndroidLollipop
+    \brief a version corresponding to Android Lollipop (version 5.0, API level 21).
+    \since 5.9
+ */
+const QOperatingSystemVersion QOperatingSystemVersion::AndroidLollipop =
+    QOperatingSystemVersion(QOperatingSystemVersion::Android, 5, 0);
+
+/*!
+    \variable QOperatingSystemVersion::AndroidLollipop_MR1
+    \brief a version corresponding to Android Lollipop, maintenance release 1
+    (version 5.1, API level 22).
+    \since 5.9
+ */
+const QOperatingSystemVersion QOperatingSystemVersion::AndroidLollipop_MR1 =
+    QOperatingSystemVersion(QOperatingSystemVersion::Android, 5, 1);
+
+/*!
+    \variable QOperatingSystemVersion::AndroidMarshmallow
+    \brief a version corresponding to Android Marshmallow (version 6.0, API level 23).
+    \since 5.9
+ */
+const QOperatingSystemVersion QOperatingSystemVersion::AndroidMarshmallow =
+    QOperatingSystemVersion(QOperatingSystemVersion::Android, 6, 0);
+
+/*!
+    \variable QOperatingSystemVersion::AndroidNougat
+    \brief a version corresponding to Android Nougat (version 7.0, API level 24).
+    \since 5.9
+ */
+const QOperatingSystemVersion QOperatingSystemVersion::AndroidNougat =
+    QOperatingSystemVersion(QOperatingSystemVersion::Android, 7, 0);
+
+/*!
+    \variable QOperatingSystemVersion::AndroidNougat_MR1
+    \brief a version corresponding to Android Nougat, maintenance release 1
+    (version 7.0, API level 25).
+    \since 5.9
+ */
+const QOperatingSystemVersion QOperatingSystemVersion::AndroidNougat_MR1 =
+    QOperatingSystemVersion(QOperatingSystemVersion::Android, 7, 1);
+
+/*!
+    \variable QOperatingSystemVersion::AndroidOreo
+    \brief a version corresponding to Android Oreo (version 8.0, API level 26).
+    \since 5.9.2
+ */
+const QOperatingSystemVersion QOperatingSystemVersion::AndroidOreo =
+    QOperatingSystemVersion(QOperatingSystemVersion::Android, 8, 0);
+
+#ifndef QT_NO_DEBUG_STREAM
+QDebug operator<<(QDebug debug, const QOperatingSystemVersion &ov)
+{
+    QDebugStateSaver saver(debug);
+    debug.nospace();
+    debug << "QOperatingSystemVersion(" << ov.name()
+        << ", " << ov.majorVersion() << '.' << ov.minorVersion()
+        << '.' << ov.microVersion() << ')';
+    return debug;
+}
+#endif // !QT_NO_DEBUG_STREAM
+
+QT_END_NAMESPACE
diff --git a/5.15.2/qtbase/src/corelib/global/qoperatingsystemversion.h b/5.15.2/qtbase/src/corelib/global/qoperatingsystemversion.h
new file mode 100644
index 0000000..4aeefef
--- /dev/null
+++ b/5.15.2/qtbase/src/corelib/global/qoperatingsystemversion.h
@@ -0,0 +1,158 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/qglobal.h>
+
+#ifndef QOPERATINGSYSTEMVERSION_H
+#define QOPERATINGSYSTEMVERSION_H
+
+QT_BEGIN_NAMESPACE
+
+class QString;
+class QVersionNumber;
+
+class Q_CORE_EXPORT QOperatingSystemVersion
+{
+public:
+    enum OSType {
+        Unknown = 0,
+        Windows,
+        MacOS,
+        IOS,
+        TvOS,
+        WatchOS,
+        Android
+    };
+
+    static const QOperatingSystemVersion Windows7;
+    static const QOperatingSystemVersion Windows8;
+    static const QOperatingSystemVersion Windows8_1;
+    static const QOperatingSystemVersion Windows10;
+
+    static const QOperatingSystemVersion OSXMavericks;
+    static const QOperatingSystemVersion OSXYosemite;
+    static const QOperatingSystemVersion OSXElCapitan;
+    static const QOperatingSystemVersion MacOSSierra;
+    static const QOperatingSystemVersion MacOSHighSierra;
+    static const QOperatingSystemVersion MacOSMojave;
+    static const QOperatingSystemVersion MacOSCatalina;
+    static const QOperatingSystemVersion MacOSBigSur;
+
+    static const QOperatingSystemVersion AndroidJellyBean;
+    static const QOperatingSystemVersion AndroidJellyBean_MR1;
+    static const QOperatingSystemVersion AndroidJellyBean_MR2;
+    static const QOperatingSystemVersion AndroidKitKat;
+    static const QOperatingSystemVersion AndroidLollipop;
+    static const QOperatingSystemVersion AndroidLollipop_MR1;
+    static const QOperatingSystemVersion AndroidMarshmallow;
+    static const QOperatingSystemVersion AndroidNougat;
+    static const QOperatingSystemVersion AndroidNougat_MR1;
+    static const QOperatingSystemVersion AndroidOreo;
+
+    Q_DECL_CONSTEXPR QOperatingSystemVersion(OSType osType,
+                                             int vmajor, int vminor = -1, int vmicro = -1)
+        : m_os(osType),
+          m_major(qMax(-1, vmajor)),
+          m_minor(vmajor < 0 ? -1 : qMax(-1, vminor)),
+          m_micro(vmajor < 0 || vminor < 0 ? -1 : qMax(-1, vmicro))
+    { }
+
+    static QOperatingSystemVersion current();
+
+    static Q_DECL_CONSTEXPR OSType currentType()
+    {
+#if defined(Q_OS_WIN)
+        return Windows;
+#elif defined(Q_OS_MACOS)
+        return MacOS;
+#elif defined(Q_OS_IOS)
+        return IOS;
+#elif defined(Q_OS_TVOS)
+        return TvOS;
+#elif defined(Q_OS_WATCHOS)
+        return WatchOS;
+#elif defined(Q_OS_ANDROID)
+        return Android;
+#else
+        return Unknown;
+#endif
+    }
+
+    Q_DECL_CONSTEXPR int majorVersion() const { return m_major; }
+    Q_DECL_CONSTEXPR int minorVersion() const { return m_minor; }
+    Q_DECL_CONSTEXPR int microVersion() const { return m_micro; }
+
+    Q_DECL_CONSTEXPR int segmentCount() const
+    { return m_micro >= 0 ? 3 : m_minor >= 0 ? 2 : m_major >= 0 ? 1 : 0; }
+
+    bool isAnyOfType(std::initializer_list<OSType> types) const;
+    Q_DECL_CONSTEXPR OSType type() const { return m_os; }
+    QString name() const;
+
+    friend bool operator>(const QOperatingSystemVersion &lhs, const QOperatingSystemVersion &rhs)
+    { return lhs.type() == rhs.type() && QOperatingSystemVersion::compare(lhs, rhs) > 0; }
+
+    friend bool operator>=(const QOperatingSystemVersion &lhs, const QOperatingSystemVersion &rhs)
+    { return lhs.type() == rhs.type() && QOperatingSystemVersion::compare(lhs, rhs) >= 0; }
+
+    friend bool operator<(const QOperatingSystemVersion &lhs, const QOperatingSystemVersion &rhs)
+    { return lhs.type() == rhs.type() && QOperatingSystemVersion::compare(lhs, rhs) < 0; }
+
+    friend bool operator<=(const QOperatingSystemVersion &lhs, const QOperatingSystemVersion &rhs)
+    { return lhs.type() == rhs.type() && QOperatingSystemVersion::compare(lhs, rhs) <= 0; }
+
+private:
+    QOperatingSystemVersion() = default;
+    OSType m_os;
+    int m_major;
+    int m_minor;
+    int m_micro;
+
+    static int compare(const QOperatingSystemVersion &v1, const QOperatingSystemVersion &v2);
+};
+Q_DECLARE_TYPEINFO(QOperatingSystemVersion, QT_VERSION < QT_VERSION_CHECK(6, 0, 0) ? Q_RELOCATABLE_TYPE : Q_PRIMITIVE_TYPE);
+
+#ifndef QT_NO_DEBUG_STREAM
+class QDebug;
+Q_CORE_EXPORT QDebug operator<<(QDebug debug, const QOperatingSystemVersion &ov);
+#endif
+
+QT_END_NAMESPACE
+
+#endif // QOPERATINGSYSTEMVERSION_H