1/* Copyright (C) 1999, 2001, 2004, 2009 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, write to the Free 16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 17 02111-1307 USA. */ 18 19#ifndef _UNISTD_H 20# error "Never include this file directly. Use <unistd.h> instead" 21#endif 22 23#include <bits/wordsize.h> 24 25/* This header should define the following symbols under the described 26 situations. A value `1' means that the model is always supported, 27 `-1' means it is never supported. Undefined means it cannot be 28 statically decided. 29 30 _POSIX_V7_ILP32_OFF32 32bit int, long, pointers, and off_t type 31 _POSIX_V7_ILP32_OFFBIG 32bit int, long, and pointers and larger off_t type 32 33 _POSIX_V7_LP64_OFF32 64bit long and pointers and 32bit off_t type 34 _POSIX_V7_LPBIG_OFFBIG 64bit long and pointers and large off_t type 35 36 The macros _POSIX_V6_ILP32_OFF32, _POSIX_V6_ILP32_OFFBIG, 37 _POSIX_V6_LP64_OFF32, _POSIX_V6_LPBIG_OFFBIG, _XBS5_ILP32_OFF32, 38 _XBS5_ILP32_OFFBIG, _XBS5_LP64_OFF32, and _XBS5_LPBIG_OFFBIG were 39 used in previous versions of the Unix standard and are available 40 only for compatibility. 41*/ 42 43#if __WORDSIZE == 64 44 45/* We can never provide environments with 32-bit wide pointers. */ 46# define _POSIX_V7_ILP32_OFF32 -1 47# define _POSIX_V7_ILP32_OFFBIG -1 48# define _POSIX_V6_ILP32_OFF32 -1 49# define _POSIX_V6_ILP32_OFFBIG -1 50# define _XBS5_ILP32_OFF32 -1 51# define _XBS5_ILP32_OFFBIG -1 52/* We also have no use (for now) for an environment with bigger pointers 53 and offsets. */ 54# define _POSIX_V7_LPBIG_OFFBIG -1 55# define _POSIX_V6_LPBIG_OFFBIG -1 56# define _XBS5_LPBIG_OFFBIG -1 57 58/* By default we have 64-bit wide `long int', pointers and `off_t'. */ 59# define _POSIX_V7_LP64_OFF64 1 60# define _POSIX_V6_LP64_OFF64 1 61# define _XBS5_LP64_OFF64 1 62 63#else /* __WORDSIZE == 32 */ 64 65/* By default we have 32-bit wide `int', `long int', pointers and `off_t' 66 and all platforms support LFS. */ 67# define _POSIX_V7_ILP32_OFF32 1 68# define _POSIX_V7_ILP32_OFFBIG 1 69# define _POSIX_V6_ILP32_OFF32 1 70# define _POSIX_V6_ILP32_OFFBIG 1 71# define _XBS5_ILP32_OFF32 1 72# define _XBS5_ILP32_OFFBIG 1 73 74/* We optionally provide an environment with the above size but an 64-bit 75 side `off_t'. Therefore we don't define _POSIX_V7_ILP32_OFFBIG. */ 76 77/* We can never provide environments with 64-bit wide pointers. */ 78# define _POSIX_V7_LP64_OFF64 -1 79# define _POSIX_V7_LPBIG_OFFBIG -1 80# define _POSIX_V6_LP64_OFF64 -1 81# define _POSIX_V6_LPBIG_OFFBIG -1 82# define _XBS5_LP64_OFF64 -1 83# define _XBS5_LPBIG_OFFBIG -1 84 85/* CFLAGS. */ 86#define __ILP32_OFFBIG_CFLAGS "-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" 87 88#endif /* __WORDSIZE == 32 */ 89