vtkCocoaMacOSXSDKCompatibility.h 1.87 KB
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/*=========================================================================

Program:   Visualization Toolkit
Module:    vtkCocoaMacOSXSDKCompatibility.h

Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
// .NAME vtkCocoaMacOSXSDKCompatibility - Compatibility header
// .SECTION Description
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// VTK requires the Mac OS X 10.6 SDK or later.
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// However, this file is meant to allow us to use features from newer
// SDKs by adding workarounds to still support the minimum SDK.
// It is safe to include this header multiple times.

#include <AvailabilityMacros.h>

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#if MAC_OS_X_VERSION_MAX_ALLOWED < 1060
  #error VTK requires the Mac OS X 10.6 SDK or later
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#endif

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#if MAC_OS_X_VERSION_MIN_REQUIRED < 1060
  #error VTK requires a deployment target of Mac OS X 10.6 or later
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#endif

// __has_feature is new in the 10.7 SDK, define it here if it's not yet defined.
#ifndef __has_feature
  #define __has_feature(x) 0
#endif

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// Create handy #defines that indicate the Objective-C memory management model.
// Manual Retain Release, Automatic Reference Counting, or Garbage Collection.
#if defined(__OBJC_GC__)
  #define VTK_OBJC_IS_MRR 0
  #define VTK_OBJC_IS_ARC 0
  #define VTK_OBJC_IS_GC 1
#elif __has_feature(objc_arc)
  #define VTK_OBJC_IS_MRR 0
  #define VTK_OBJC_IS_ARC 1
  #define VTK_OBJC_IS_GC 0
#else
  #define VTK_OBJC_IS_MRR 1
  #define VTK_OBJC_IS_ARC 0
  #define VTK_OBJC_IS_GC 0
#endif

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#if __has_feature(objc_arc)
  #error VTK does not yet support ARC memory management
#endif

// VTK-HeaderTest-Exclude: vtkCocoaMacOSXSDKCompatibility.h