sysdeps/unix/sysv/linux/i386/bits/environments.h

   1 /* Copyright (C) 1999, 2001, 2004 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 /* This header should define the following symbols under the described
  24    situations.  A value `1' means that the model is always supported,
  25    `-1' means it is never supported.  Undefined means it cannot be
  26    statically decided.
  27
  28    _POSIX_V6_ILP32_OFF32   32bit int, long, pointers, and off_t type
  29    _POSIX_V6_ILP32_OFFBIG  32bit int, long, and pointers and larger off_t type
  30
  31    _POSIX_V6_LP64_OFF32    64bit long and pointers and 32bit off_t type
  32    _POSIX_V6_LPBIG_OFFBIG  64bit long and pointers and large off_t type
  33
  34    The macros _XBS5_ILP32_OFF32, _XBS5_ILP32_OFFBIG, _XBS5_LP64_OFF32, and
  35    _XBS5_LPBIG_OFFBIG were used in previous versions of the Unix standard
  36    and are available only for compatibility.
  37 */
  38
  39 /* By default we have 32-bit wide `int', `long int', pointers and `off_t'
  40    and all platforms support LFS.  */
  41 #define _POSIX_V6_ILP32_OFF32   1
  42 #define _POSIX_V6_ILP32_OFFBIG  1
  43 #define _XBS5_ILP32_OFF32       1
  44 #define _XBS5_ILP32_OFFBIG      1
  45
  46 /* We optionally provide an environment with the above size but an 64-bit
  47    side `off_t'.  Therefore we don't define _XBS5_ILP32_OFFBIG.  */
  48
  49 /* Environments with 64-bit wide pointers can be provided,
  50    so these macros aren't defined:
  51    # undef _POSIX_V6_LP64_OFF64
  52    # undef _POSIX_V6_LPBIG_OFFBIG
  53    # undef _XBS5_LP64_OFF64
  54    # undef _XBS5_LPBIG_OFFBIG
  55    and sysconf tests for it at runtime.  */
  56
  57 #define __ILP32_OFF32_CFLAGS    "-m32"
  58 #define __ILP32_OFFBIG_CFLAGS   "-m32 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
  59 #define __ILP32_OFF32_LDFLAGS   "-m32"
  60 #define __ILP32_OFFBIG_LDFLAGS  "-m32"
  61 #define __LP64_OFF64_CFLAGS     "-m64"
  62 #define __LP64_OFF64_LDFLAGS    "-m64"