| /* 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 */ |
