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01: /* Copyright (C) 1999, 2001, 2004, 2009 Free Software Foundation, Inc.
02:    This file is part of the GNU C Library.
03: 
04:    The GNU C Library is free software; you can redistribute it and/or
05:    modify it under the terms of the GNU Lesser General Public
06:    License as published by the Free Software Foundation; either
07:    version 2.1 of the License, or (at your option) any later version.
08: 
09:    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: /* Environments with 32-bit wide pointers are optionally provided.
46:    Therefore following macros aren't defined:
47:    # undef _POSIX_V7_ILP32_OFF32
48:    # undef _POSIX_V7_ILP32_OFFBIG
49:    # undef _POSIX_V6_ILP32_OFF32
50:    # undef _POSIX_V6_ILP32_OFFBIG
51:    # undef _XBS5_ILP32_OFF32
52:    # undef _XBS5_ILP32_OFFBIG
53:    and users need to check at runtime.  */
54: 
55: /* We also have no use (for now) for an environment with bigger pointers
56:    and offsets.  */
57: # define _POSIX_V7_LPBIG_OFFBIG -1
58: # define _POSIX_V6_LPBIG_OFFBIG -1
59: # define _XBS5_LPBIG_OFFBIG     -1
60: 
61: /* By default we have 64-bit wide `long int', pointers and `off_t'.  */
62: # define _POSIX_V7_LP64_OFF64   1
63: # define _POSIX_V6_LP64_OFF64   1
64: # define _XBS5_LP64_OFF64       1
65: 
66: #else /* __WORDSIZE == 32 */
67: 
68: /* By default we have 32-bit wide `int', `long int', pointers and `off_t'
69:    and all platforms support LFS.  */
70: # define _POSIX_V7_ILP32_OFF32  1
71: # define _POSIX_V7_ILP32_OFFBIG 1
72: # define _POSIX_V6_ILP32_OFF32  1
73: # define _POSIX_V6_ILP32_OFFBIG 1
74: # define _XBS5_ILP32_OFF32      1
75: # define _XBS5_ILP32_OFFBIG     1
76: 
77: /* We optionally provide an environment with the above size but an 64-bit
78:    side `off_t'.  Therefore we don't define _POSIX_V7_ILP32_OFFBIG.  */
79: 
80: /* Environments with 64-bit wide pointers can be provided,
81:    so these macros aren't defined:
82:    # undef _POSIX_V7_LP64_OFF64
83:    # undef _POSIX_V7_LPBIG_OFFBIG
84:    # undef _POSIX_V6_LP64_OFF64
85:    # undef _POSIX_V6_LPBIG_OFFBIG
86:    # undef _XBS5_LP64_OFF64
87:    # undef _XBS5_LPBIG_OFFBIG
88:    and sysconf tests for it at runtime.  */
89: 
90: #endif /* __WORDSIZE == 32 */
91: 
92: #define __ILP32_OFF32_CFLAGS    "-m32"
93: #define __ILP32_OFFBIG_CFLAGS   "-m32 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
94: #define __ILP32_OFF32_LDFLAGS   "-m32"
95: #define __ILP32_OFFBIG_LDFLAGS  "-m32"
96: #define __LP64_OFF64_CFLAGS     "-m64"
97: #define __LP64_OFF64_LDFLAGS    "-m64"
98: 

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