| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105 |
- /* Copyright (C) 1999-2016 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
- #ifndef _UNISTD_H
- # error "Never include this file directly. Use <unistd.h> instead"
- #endif
- #include <bits/wordsize.h>
- /* This header should define the following symbols under the described
- situations. A value `1' means that the model is always supported,
- `-1' means it is never supported. Undefined means it cannot be
- statically decided.
- _POSIX_V7_ILP32_OFF32 32bit int, long, pointers, and off_t type
- _POSIX_V7_ILP32_OFFBIG 32bit int, long, and pointers and larger off_t type
- _POSIX_V7_LP64_OFF32 64bit long and pointers and 32bit off_t type
- _POSIX_V7_LPBIG_OFFBIG 64bit long and pointers and large off_t type
- The macros _POSIX_V6_ILP32_OFF32, _POSIX_V6_ILP32_OFFBIG,
- _POSIX_V6_LP64_OFF32, _POSIX_V6_LPBIG_OFFBIG, _XBS5_ILP32_OFF32,
- _XBS5_ILP32_OFFBIG, _XBS5_LP64_OFF32, and _XBS5_LPBIG_OFFBIG were
- used in previous versions of the Unix standard and are available
- only for compatibility.
- */
- #if __WORDSIZE == 64
- /* Environments with 32-bit wide pointers are optionally provided.
- Therefore following macros aren't defined:
- # undef _POSIX_V7_ILP32_OFF32
- # undef _POSIX_V7_ILP32_OFFBIG
- # undef _POSIX_V6_ILP32_OFF32
- # undef _POSIX_V6_ILP32_OFFBIG
- # undef _XBS5_ILP32_OFF32
- # undef _XBS5_ILP32_OFFBIG
- and users need to check at runtime. */
- /* We also have no use (for now) for an environment with bigger pointers
- and offsets. */
- # define _POSIX_V7_LPBIG_OFFBIG -1
- # define _POSIX_V6_LPBIG_OFFBIG -1
- # define _XBS5_LPBIG_OFFBIG -1
- /* By default we have 64-bit wide `long int', pointers and `off_t'. */
- # define _POSIX_V7_LP64_OFF64 1
- # define _POSIX_V6_LP64_OFF64 1
- # define _XBS5_LP64_OFF64 1
- #else /* __WORDSIZE == 32 */
- /* We have 32-bit wide `int', `long int' and pointers and all platforms
- support LFS. -mx32 has 64-bit wide `off_t'. */
- # define _POSIX_V7_ILP32_OFFBIG 1
- # define _POSIX_V6_ILP32_OFFBIG 1
- # define _XBS5_ILP32_OFFBIG 1
- # ifndef __x86_64__
- /* -m32 has 32-bit wide `off_t'. */
- # define _POSIX_V7_ILP32_OFF32 1
- # define _POSIX_V6_ILP32_OFF32 1
- # define _XBS5_ILP32_OFF32 1
- # endif
- /* We optionally provide an environment with the above size but an 64-bit
- side `off_t'. Therefore we don't define _POSIX_V7_ILP32_OFFBIG. */
- /* Environments with 64-bit wide pointers can be provided,
- so these macros aren't defined:
- # undef _POSIX_V7_LP64_OFF64
- # undef _POSIX_V7_LPBIG_OFFBIG
- # undef _POSIX_V6_LP64_OFF64
- # undef _POSIX_V6_LPBIG_OFFBIG
- # undef _XBS5_LP64_OFF64
- # undef _XBS5_LPBIG_OFFBIG
- and sysconf tests for it at runtime. */
- #endif /* __WORDSIZE == 32 */
- #define __ILP32_OFF32_CFLAGS "-m32"
- #define __ILP32_OFF32_LDFLAGS "-m32"
- #if defined __x86_64__ && defined __ILP32__
- # define __ILP32_OFFBIG_CFLAGS "-mx32"
- # define __ILP32_OFFBIG_LDFLAGS "-mx32"
- #else
- # define __ILP32_OFFBIG_CFLAGS "-m32 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
- # define __ILP32_OFFBIG_LDFLAGS "-m32"
- #endif
- #define __LP64_OFF64_CFLAGS "-m64"
- #define __LP64_OFF64_LDFLAGS "-m64"
|
