arch/all-pc/boot/grub2-aros/include/grub/compiler.h

   1 /* compiler.h - macros for various compiler features */
   2 /*
   3  *  GRUB  --  GRand Unified Bootloader
   4  *  Copyright (C) 2002,2003,2005,2006,2007,2008,2009,2010,2014  Free Software Foundation, Inc.
   5  *
   6  *  GRUB is free software: you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation, either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  GRUB is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifndef GRUB_COMPILER_HEADER
  21 #define GRUB_COMPILER_HEADER    1
  22
  23 /* GCC version checking borrowed from glibc. */
  24 #if defined(__GNUC__) && defined(__GNUC_MINOR__)
  25 #  define GNUC_PREREQ(maj,min) \
  26         ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
  27 #else
  28 #  define GNUC_PREREQ(maj,min) 0
  29 #endif
  30
  31 /* Does this compiler support compile-time error attributes? */
  32 #if GNUC_PREREQ(4,3)
  33 #  define ATTRIBUTE_ERROR(msg) \
  34         __attribute__ ((__error__ (msg)))
  35 #else
  36 #  define ATTRIBUTE_ERROR(msg) __attribute__ ((noreturn))
  37 #endif
  38
  39 #if GNUC_PREREQ(4,4)
  40 #  define GNU_PRINTF gnu_printf
  41 #else
  42 #  define GNU_PRINTF printf
  43 #endif
  44
  45 #if GNUC_PREREQ(3,4)
  46 #  define WARN_UNUSED_RESULT __attribute__ ((warn_unused_result))
  47 #else
  48 #  define WARN_UNUSED_RESULT
  49 #endif
  50
  51 #endif /* ! GRUB_COMPILER_HEADER */