os_defines.h revision 169691
1169691Skan// Specific definitions for Darwin -*- C++ -*- 2169691Skan 3169691Skan// Copyright (C) 2004 Free Software Foundation, Inc. 4169691Skan// 5169691Skan// This file is part of the GNU ISO C++ Library. This library is free 6169691Skan// software; you can redistribute it and/or modify it under the 7169691Skan// terms of the GNU General Public License as published by the 8169691Skan// Free Software Foundation; either version 2, or (at your option) 9169691Skan// any later version. 10169691Skan 11169691Skan// This library is distributed in the hope that it will be useful, 12169691Skan// but WITHOUT ANY WARRANTY; without even the implied warranty of 13169691Skan// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14169691Skan// GNU General Public License for more details. 15169691Skan 16169691Skan// You should have received a copy of the GNU General Public License along 17169691Skan// with this library; see the file COPYING. If not, write to the Free 18169691Skan// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 19169691Skan// USA. 20169691Skan 21169691Skan// As a special exception, you may use this file as part of a free software 22169691Skan// library without restriction. Specifically, if other files instantiate 23169691Skan// templates or use macros or inline functions from this file, or you compile 24169691Skan// this file and link it with other files to produce an executable, this 25169691Skan// file does not by itself cause the resulting executable to be covered by 26169691Skan// the GNU General Public License. This exception does not however 27169691Skan// invalidate any other reasons why the executable file might be covered by 28169691Skan// the GNU General Public License. 29169691Skan 30169691Skan 31169691Skan#ifndef _GLIBCXX_OS_DEFINES 32169691Skan#define _GLIBCXX_OS_DEFINES 1 33169691Skan 34169691Skan// System-specific #define, typedefs, corrections, etc, go here. This 35169691Skan// file will come before all others. 36169691Skan 37169691Skan/* Darwin has the pthread routines in libSystem, which every program 38169691Skan links to, so there's no need for weak-ness for that. */ 39169691Skan#define _GLIBCXX_GTHREAD_USE_WEAK 0 40169691Skan 41169691Skan// On Darwin, in order to enable overriding of operator new and delete, 42169691Skan// GCC makes the definition of these functions weak, relies on the 43169691Skan// loader to implement weak semantics properly, and uses 44169691Skan// -flat_namespace to work around the way that it doesn't. 45169691Skan#define _GLIBCXX_WEAK_DEFINITION __attribute__ ((weak)) 46169691Skan 47169691Skan#endif 48