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Annotation of Gnu-Mach/i386/grub/compiler.h, revision 1.1

1.1     ! root        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 */

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