| /* Copyright (C) 1999, 2001, 2004, 2009 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, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #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 */ |
| |
| /* By default we have 32-bit wide `int', `long int', pointers and `off_t' |
| and all platforms support LFS. */ |
| # define _POSIX_V7_ILP32_OFF32 1 |
| # define _POSIX_V7_ILP32_OFFBIG 1 |
| # define _POSIX_V6_ILP32_OFF32 1 |
| # define _POSIX_V6_ILP32_OFFBIG 1 |
| # define _XBS5_ILP32_OFF32 1 |
| # define _XBS5_ILP32_OFFBIG 1 |
| |
| /* 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_OFFBIG_CFLAGS "-m32 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" |
| #define __ILP32_OFF32_LDFLAGS "-m32" |
| #define __ILP32_OFFBIG_LDFLAGS "-m32" |
| #define __LP64_OFF64_CFLAGS "-m64" |
| #define __LP64_OFF64_LDFLAGS "-m64" |
