#ifndef _COMPILER_H #define _COMPILER_H /* * Copyright (C) 2012 Michael Brown . * * This program 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 2 of the * License, or (at your option) any later version. * * This program 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 this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ /** * @file * * Global compiler definitions * */ /* Force visibility of all symbols to "hidden", i.e. inform gcc that * all symbol references resolve strictly within our final binary. * This avoids unnecessary PLT/GOT entries on x86_64. * * This is a stronger claim than specifying "-fvisibility=hidden", * since it also affects symbols marked with "extern". */ #ifndef ASSEMBLY #if __GNUC__ >= 4 #pragma GCC visibility push(hidden) #endif #endif /* ASSEMBLY */ #endif /* _COMPILER_H */