c++config revision 119258
1// Predefined symbols and macros -*- C++ -*- 2 3// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003 4// Free Software Foundation, Inc. 5// 6// This file is part of the GNU ISO C++ Library. This library is free 7// software; you can redistribute it and/or modify it under the 8// terms of the GNU General Public License as published by the 9// Free Software Foundation; either version 2, or (at your option) 10// any later version. 11 12// This library is distributed in the hope that it will be useful, 13// but WITHOUT ANY WARRANTY; without even the implied warranty of 14// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15// GNU General Public License for more details. 16 17// You should have received a copy of the GNU General Public License along 18// with this library; see the file COPYING. If not, write to the Free 19// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 20// USA. 21 22// As a special exception, you may use this file as part of a free software 23// library without restriction. Specifically, if other files instantiate 24// templates or use macros or inline functions from this file, or you compile 25// this file and link it with other files to produce an executable, this 26// file does not by itself cause the resulting executable to be covered by 27// the GNU General Public License. This exception does not however 28// invalidate any other reasons why the executable file might be covered by 29// the GNU General Public License. 30 31#ifndef _CPP_CPPCONFIG 32#define _CPP_CPPCONFIG 1 33 34// Pick up any OS-specific definitions. 35#include <bits/os_defines.h> 36 37// The current version of the C++ library in compressed ISO date format. 38#define __GLIBCPP__ 20030804 39 40// This is necessary until GCC supports separate template compilation. 41#define _GLIBCPP_NO_TEMPLATE_EXPORT 1 42 43// This is a hack around not having either pre-compiled headers or 44// export compilation. If defined, the io, string, and valarray 45// headers will include all the necessary bits. If not defined, the 46// implementation optimizes the headers for the most commonly-used 47// types. For the io library, this means that larger, out-of-line 48// member functions are only declared, and definitions are not parsed 49// by the compiler, but instead instantiated into the library binary. 50#define _GLIBCPP_FULLY_COMPLIANT_HEADERS 1 51 52// Allow use of the GNU syntax extension, "extern template." This 53// extension is fully documented in the g++ manual, but in a nutshell, 54// it inhibits all implicit instantiations and is used throughout the 55// library to avoid multiple weak definitions for required types that 56// are already explicitly instantiated in the library binary. This 57// substantially reduces the binary size of resulting executables. 58#ifndef _GLIBCPP_EXTERN_TEMPLATE 59#define _GLIBCPP_EXTERN_TEMPLATE 1 60#endif 61 62// To enable older, ARM-style iostreams and other anachronisms use this. 63//#define _GLIBCPP_DEPRECATED 1 64 65// Use corrected code from the committee library group's issues list. 66#define _GLIBCPP_RESOLVE_LIB_DEFECTS 1 67 68// Hopefully temporary workaround to autoconf/m4 issue with quoting '@'. 69#define _GLIBCPP_AT_AT "@@" 70 71// In those parts of the standard C++ library that use a mutex instead 72// of a spin-lock, we now unconditionally use GCC's gthr.h mutex 73// abstraction layer. All support to directly map to various 74// threading models has been removed. Note: gthr.h may well map to 75// gthr-single.h which is a correct way to express no threads support 76// in gcc. Support for the undocumented _NOTHREADS has been removed. 77 78// Default to the typically high-speed, pool-based allocator (as 79// libstdc++-v2) instead of the malloc-based allocator (libstdc++-v3 80// snapshots). See libstdc++-v3/docs/html/17_intro/howto.html for 81// details on why you don't want to override this setting. Ensure 82// that threads are properly configured on your platform before 83// assigning blame to the STL container-memory allocator. After doing 84// so, please report any possible issues to libstdc++@gcc.gnu.org . 85// Do not define __USE_MALLOC on the command line. Enforce it here: 86#ifdef __USE_MALLOC 87#error __USE_MALLOC should never be defined. Read the release notes. 88#endif 89 90// Create a boolean flag to be used to determine if --fast-math is set. 91#ifdef __FAST_MATH__ 92#define _GLIBCPP_FAST_MATH 1 93#else 94#define _GLIBCPP_FAST_MATH 0 95#endif 96 97// The remainder of the prewritten config is mostly automatic; all the 98// user hooks are listed above. 99 100// End of prewritten config; the discovered settings follow. 101