HCoop / bpt / guile.git / blame
| Commit | Line | Data |
|---|---|---|
| 8912421c LC |
1 | /* A substitute for POSIX 2008 <stddef.h>, for platforms that have issues. |
| 2 | ||
| 49114fd4 | 3 | Copyright (C) 2009-2011 Free Software Foundation, Inc. |
| 8912421c LC |
4 | |
| 5 | This program is free software; you can redistribute it and/or modify | |
| 6 | it under the terms of the GNU Lesser General Public License as published by | |
| 7 | the Free Software Foundation; either version 2, or (at your option) | |
| 8 | any later version. | |
| 9 | ||
| 10 | This program is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 | GNU Lesser General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public License | |
| 16 | along with this program; if not, write to the Free Software Foundation, | |
| 17 | Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ | |
| 18 | ||
| 19 | /* Written by Eric Blake. */ | |
| 20 | ||
| 21 | /* | |
| 22 | * POSIX 2008 <stddef.h> for platforms that have issues. | |
| 23 | * <http://www.opengroup.org/susv3xbd/stddef.h.html> | |
| 24 | */ | |
| 25 | ||
| 26 | #if __GNUC__ >= 3 | |
| 27 | @PRAGMA_SYSTEM_HEADER@ | |
| 28 | #endif | |
| 0f00f2c3 | 29 | @PRAGMA_COLUMNS@ |
| 8912421c LC |
30 | |
| 31 | #if defined __need_wchar_t || defined __need_size_t \ | |
| 32 | || defined __need_ptrdiff_t || defined __need_NULL \ | |
| 33 | || defined __need_wint_t | |
| 34 | /* Special invocation convention inside gcc header files. In | |
| 35 | particular, gcc provides a version of <stddef.h> that blindly | |
| 36 | redefines NULL even when __need_wint_t was defined, even though | |
| 37 | wint_t is not normally provided by <stddef.h>. Hence, we must | |
| 38 | remember if special invocation has ever been used to obtain wint_t, | |
| 39 | in which case we need to clean up NULL yet again. */ | |
| 40 | ||
| 3d458a81 | 41 | # if !(defined _@GUARD_PREFIX@_STDDEF_H && defined _GL_STDDEF_WINT_T) |
| 8912421c | 42 | # ifdef __need_wint_t |
| 3d458a81 | 43 | # undef _@GUARD_PREFIX@_STDDEF_H |
| 8912421c LC |
44 | # define _GL_STDDEF_WINT_T |
| 45 | # endif | |
| 46 | # @INCLUDE_NEXT@ @NEXT_STDDEF_H@ | |
| 47 | # endif | |
| 48 | ||
| 49 | #else | |
| 50 | /* Normal invocation convention. */ | |
| 51 | ||
| 3d458a81 | 52 | # ifndef _@GUARD_PREFIX@_STDDEF_H |
| 8912421c LC |
53 | |
| 54 | /* The include_next requires a split double-inclusion guard. */ | |
| 55 | ||
| 56 | # @INCLUDE_NEXT@ @NEXT_STDDEF_H@ | |
| 57 | ||
| 3d458a81 AW |
58 | # ifndef _@GUARD_PREFIX@_STDDEF_H |
| 59 | # define _@GUARD_PREFIX@_STDDEF_H | |
| 8912421c LC |
60 | |
| 61 | /* On NetBSD 5.0, the definition of NULL lacks proper parentheses. */ | |
| 62 | #if @REPLACE_NULL@ | |
| 63 | # undef NULL | |
| 64 | # ifdef __cplusplus | |
| 65 | /* ISO C++ says that the macro NULL must expand to an integer constant | |
| 66 | expression, hence '((void *) 0)' is not allowed in C++. */ | |
| 67 | # if __GNUG__ >= 3 | |
| 68 | /* GNU C++ has a __null macro that behaves like an integer ('int' or | |
| 69 | 'long') but has the same size as a pointer. Use that, to avoid | |
| 70 | warnings. */ | |
| 71 | # define NULL __null | |
| 72 | # else | |
| 73 | # define NULL 0L | |
| 74 | # endif | |
| 75 | # else | |
| 76 | # define NULL ((void *) 0) | |
| 77 | # endif | |
| 78 | #endif | |
| 79 | ||
| 80 | /* Some platforms lack wchar_t. */ | |
| 81 | #if !@HAVE_WCHAR_T@ | |
| 82 | # define wchar_t int | |
| 83 | #endif | |
| 84 | ||
| 3d458a81 AW |
85 | # endif /* _@GUARD_PREFIX@_STDDEF_H */ |
| 86 | # endif /* _@GUARD_PREFIX@_STDDEF_H */ | |
| 8912421c | 87 | #endif /* __need_XXX */ |