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Diffstat (limited to 'sysdeps/generic/bits/environments.h')
| -rw-r--r-- | sysdeps/generic/bits/environments.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/sysdeps/generic/bits/environments.h b/sysdeps/generic/bits/environments.h new file mode 100644 index 0000000000..4617dc45f2 --- /dev/null +++ b/sysdeps/generic/bits/environments.h @@ -0,0 +1,78 @@ +/* Copyright (C) 1999, 2001, 2004 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_V6_ILP32_OFF32 32bit int, long, pointers, and off_t type + _POSIX_V6_ILP32_OFFBIG 32bit int, long, and pointers and larger off_t type + + _POSIX_V6_LP64_OFF32 64bit long and pointers and 32bit off_t type + _POSIX_V6_LPBIG_OFFBIG 64bit long and pointers and large off_t type + + The macros _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 + +/* We can never provide environments with 32-bit wide pointers. */ +# define _POSIX_V6_ILP32_OFF32 -1 +# define _POSIX_V6_ILP32_OFFBIG -1 +# define _XBS5_ILP32_OFF32 -1 +# define _XBS5_ILP32_OFFBIG -1 +/* We also have no use (for now) for an environment with bigger pointers + and offsets. */ +# 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_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_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 _XBS5_ILP32_OFFBIG. */ + +/* We can never provide environments with 64-bit wide pointers. */ +# define _POSIX_V6_LP64_OFF64 -1 +# define _POSIX_V6_LPBIG_OFFBIG -1 +# define _XBS5_LP64_OFF64 -1 +# define _XBS5_LPBIG_OFFBIG -1 + +/* CFLAGS. */ +#define __ILP32_OFFBIG_CFLAGS "-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" + +#endif /* __WORDSIZE == 32 */ |