1  /* Check which version of the API and ABI are appropriate for the target.
       2     Copyright (C) 2010, 2011 Free Software Foundation, Inc.
       3  
       4     Contributed by Iain Sandoe <iains@gcc.gnu.org>
       5  
       6  This file is part of GCC.
       7  
       8  GCC is free software; you can redistribute it and/or modify
       9  it under the terms of the GNU General Public License as published by
      10  the Free Software Foundation; either version 3, or (at your option)
      11  any later version.
      12  
      13  GCC is distributed in the hope that it will be useful,
      14  but WITHOUT ANY WARRANTY; without even the implied warranty of
      15  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      16  GNU General Public License for more details.
      17  
      18  You should have received a copy of the GNU General Public License
      19  along with GCC; see the file COPYING3.  If not see
      20  <http://www.gnu.org/licenses/>.  */
      21  
      22  #ifndef _OBJC_NEXT_ABI_H_
      23  #define _OBJC_NEXT_ABI_H_
      24  /* Produce a define that allows us to figure out what facilities are
      25     available for this gcc and OS combination.
      26  */
      27  
      28  /* By default we do nothing - therefore ifdef NEXT_OBJC_USE_NEW_INTERFACE
      29   * is reliable for detecting versions of the target that require either
      30   * API=2, or both API & ABI = 2 (m64 code).
      31   *
      32   * This applies for versions of OSX >= 10.5 (darwin9).
      33   *
      34   * A compiler capable of producing ObjC V2 ABI should define __OBJC2__
      35  */
      36  
      37  #undef NEXT_OBJC_ABI_VERSION
      38  #undef NEXT_OBJC_USE_NEW_INTERFACE
      39  
      40  #ifdef __NEXT_RUNTIME__
      41  #  if (__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1050 || __OBJC2__)
      42      /* We have to use an updated interface for 32bit NeXT to avoid
      43       * 'deprecated' warnings. 
      44       * For 64bit NeXT the ABI is different (and the interfaces 'deprecated'
      45       * for 32bit have been removed).
      46      */
      47  #    define NEXT_OBJC_USE_NEW_INTERFACE 1
      48  #    if __OBJC2__ || __LP64__
      49         /* We have OBJC v2 ABI compiler, 
      50            (or, at least, the available NeXT runtime requires one) */
      51  #      define NEXT_OBJC_ABI_VERSION 2
      52  #    else
      53         /* We leave it open to define ABI 1 if and when we implement those 
      54          * extensions.
      55         */
      56  #      define NEXT_OBJC_ABI_VERSION 0
      57  #    endif
      58  #  else
      59        /* Pre-OSX 10.5 all is ABI 0.  */
      60  #     define NEXT_OBJC_ABI_VERSION 0
      61  #  endif /* MAC_OS_X_VERSION_MIN_REQUIRED > 10.5 or OBJC2 */
      62  #endif /* __NEXT_RUNTIME__ */
      63  
      64  #endif /* _OBJC_NEXT_ABI_H_ */