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Annotation of Gnu-Mach/i386/grub/compiler.h, revision 1.1.1.1

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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