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/* compiler.h - macros for various compiler features */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002,2003,2005,2006,2007,2008,2009,2010,2014 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_COMPILER_HEADER
#define GRUB_COMPILER_HEADER 1
/* GCC version checking borrowed from glibc. */
#if defined(__GNUC__) && defined(__GNUC_MINOR__)
# define GNUC_PREREQ(maj,min) \
((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
#else
# define GNUC_PREREQ(maj,min) 0
#endif
/* Does this compiler support compile-time error attributes? */
#if GNUC_PREREQ(4,3)
# define ATTRIBUTE_ERROR(msg) \
__attribute__ ((__error__ (msg)))
#else
# define ATTRIBUTE_ERROR(msg) __attribute__ ((noreturn))
#endif
#if GNUC_PREREQ(4,4)
# define GNU_PRINTF gnu_printf
#else
# define GNU_PRINTF printf
#endif
#if GNUC_PREREQ(3,4)
# define WARN_UNUSED_RESULT __attribute__ ((warn_unused_result))
#else
# define WARN_UNUSED_RESULT
#endif
#endif /* ! GRUB_COMPILER_HEADER */
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