gcc/testsuite/objc-obj-c++-shared/next-abi.h

   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_ */