modernc.org/cc@v1.0.1/v2/headers/linux_arm/usr/include/arm-linux-gnueabihf/bits/environments.h (about)

     1  /* Copyright (C) 1999-2016 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, see
    16     <http://www.gnu.org/licenses/>.  */
    17  
    18  #ifndef _UNISTD_H
    19  #error "Never include this file directly.  Use <unistd.h> instead"
    20  #endif
    21  
    22  #include <bits/wordsize.h>
    23  
    24  /* This header should define the following symbols under the described
    25     situations.  A value `1' means that the model is always supported,
    26     `-1' means it is never supported.  Undefined means it cannot be
    27     statically decided.
    28  
    29     _POSIX_V7_ILP32_OFF32   32bit int, long, pointers, and off_t type
    30     _POSIX_V7_ILP32_OFFBIG  32bit int, long, and pointers and larger off_t type
    31  
    32     _POSIX_V7_LP64_OFF32	   64bit long and pointers and 32bit off_t type
    33     _POSIX_V7_LPBIG_OFFBIG  64bit long and pointers and large off_t type
    34  
    35     The macros _POSIX_V6_ILP32_OFF32, _POSIX_V6_ILP32_OFFBIG,
    36     _POSIX_V6_LP64_OFF32, _POSIX_V6_LPBIG_OFFBIG, _XBS5_ILP32_OFF32,
    37     _XBS5_ILP32_OFFBIG, _XBS5_LP64_OFF32, and _XBS5_LPBIG_OFFBIG were
    38     used in previous versions of the Unix standard and are available
    39     only for compatibility.
    40  */
    41  
    42  #if __WORDSIZE == 64
    43  
    44  /* We can never provide environments with 32-bit wide pointers.  */
    45  #define _POSIX_V7_ILP32_OFF32	-1
    46  #define _POSIX_V7_ILP32_OFFBIG	-1
    47  #define _POSIX_V6_ILP32_OFF32	-1
    48  #define _POSIX_V6_ILP32_OFFBIG	-1
    49  #define _XBS5_ILP32_OFF32	-1
    50  #define _XBS5_ILP32_OFFBIG	-1
    51  /* We also have no use (for now) for an environment with bigger pointers
    52     and offsets.  */
    53  #define _POSIX_V7_LPBIG_OFFBIG	-1
    54  #define _POSIX_V6_LPBIG_OFFBIG	-1
    55  #define _XBS5_LPBIG_OFFBIG	-1
    56  
    57  /* By default we have 64-bit wide `long int', pointers and `off_t'.  */
    58  #define _POSIX_V7_LP64_OFF64	1
    59  #define _POSIX_V6_LP64_OFF64	1
    60  #define _XBS5_LP64_OFF64	1
    61  
    62  #else				/* __WORDSIZE == 32 */
    63  
    64  /* By default we have 32-bit wide `int', `long int', pointers and `off_t'
    65     and all platforms support LFS.  */
    66  #define _POSIX_V7_ILP32_OFF32	1
    67  #define _POSIX_V7_ILP32_OFFBIG	1
    68  #define _POSIX_V6_ILP32_OFF32	1
    69  #define _POSIX_V6_ILP32_OFFBIG	1
    70  #define _XBS5_ILP32_OFF32	1
    71  #define _XBS5_ILP32_OFFBIG	1
    72  
    73  /* We optionally provide an environment with the above size but an 64-bit
    74     side `off_t'.  Therefore we don't define _POSIX_V7_ILP32_OFFBIG.  */
    75  
    76  /* We can never provide environments with 64-bit wide pointers.  */
    77  #define _POSIX_V7_LP64_OFF64	-1
    78  #define _POSIX_V7_LPBIG_OFFBIG	-1
    79  #define _POSIX_V6_LP64_OFF64	-1
    80  #define _POSIX_V6_LPBIG_OFFBIG	-1
    81  #define _XBS5_LP64_OFF64	-1
    82  #define _XBS5_LPBIG_OFFBIG	-1
    83  
    84  /* CFLAGS.  */
    85  #define __ILP32_OFFBIG_CFLAGS   "-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
    86  
    87  #endif				/* __WORDSIZE == 32 */