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+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtBluetooth module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** 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 http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://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 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef OSXBLUETOOTH_P_H
+#define OSXBLUETOOTH_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.
+//
+
+#include <QtCore/qglobal.h>
+
+#ifndef QT_OSX_BLUETOOTH
+
+#include <CoreBluetooth/CoreBluetooth.h>
+
+#else
+
+#if QT_OSX_PLATFORM_SDK_EQUAL_OR_ABOVE(__MAC_10_12)
+
+#include <CoreBluetooth/CoreBluetooth.h>
+#include <IOBluetooth/IOBluetooth.h>
+
+#else
+
+// CoreBluetooth with SDK 10.9 seems to be broken: the class CBPeripheralManager is enabled on macOS
+// but some of its declarations are using a disabled enum CBPeripheralAuthorizationStatus
+// (disabled using __attribute__ syntax and NS_ENUM_AVAILABLE macro).
+// This + -std=c++11 ends with a compilation error. For the SDK 10.9 we can:
+// 1. either undefine NS_ENUM_AVAILABLE macro (it works somehow) and redefine it as an empty sequence
+// of pp-tokens or
+// 2. define __attribute__ as an empty sequence. Both solutions look quite ugly.
+
+#if QT_OSX_PLATFORM_SDK_EQUAL_OR_ABOVE(__MAC_10_9) && !QT_OSX_PLATFORM_SDK_EQUAL_OR_ABOVE(__MAC_10_10)
+
+// Must be included BEFORE CoreBluetooth.h:
+#include <Foundation/Foundation.h>
+
+#define CB_ERROR_WORKAROUND_REQUIRED
+#undef NS_ENUM_AVAILABLE
+#define NS_ENUM_AVAILABLE(_mac, _ios)
+
+#endif // SDK version == 10.9
+
+// In SDK below 10.12 IOBluetooth.h includes CoreBluetooth.h.
+#include <IOBluetooth/IOBluetooth.h>
+
+#ifdef CB_ERROR_WORKAROUND_REQUIRED
+#undef __attribute__
+#undef CB_ERROR_WORKAROUND_REQUIRED
+#endif // WORKAROUND
+
+#endif // SDK
+
+#endif // QT_OSX_BLUETOOTH
+#endif // OSXBLUETOOTH_P_H