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48789000 | 1 | /* Handle feature test macros at the start of a header. |
bfff8b1b | 2 | Copyright (C) 2016-2017 Free Software Foundation, Inc. |
48789000 JM |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library 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 GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | /* This header is internal to glibc and should not be included outside | |
20 | of glibc headers. Headers including it must define | |
21 | __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION first. This header | |
22 | cannot have multiple include guards because ISO C feature test | |
23 | macros depend on the definition of the macro when an affected | |
24 | header is included, not when the first system header is | |
25 | included. */ | |
26 | ||
27 | #ifndef __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION | |
28 | # error "Never include <bits/libc-header-start.h> directly." | |
29 | #endif | |
30 | ||
31 | #undef __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION | |
32 | ||
33 | #include <features.h> | |
34 | ||
35 | /* ISO/IEC TR 24731-2:2010 defines the __STDC_WANT_LIB_EXT2__ | |
36 | macro. */ | |
37 | #undef __GLIBC_USE_LIB_EXT2 | |
38 | #if (defined __USE_GNU \ | |
39 | || (defined __STDC_WANT_LIB_EXT2__ && __STDC_WANT_LIB_EXT2__ > 0)) | |
40 | # define __GLIBC_USE_LIB_EXT2 1 | |
41 | #else | |
42 | # define __GLIBC_USE_LIB_EXT2 0 | |
43 | #endif | |
bf91be88 JM |
44 | |
45 | /* ISO/IEC TS 18661-1:2014 defines the __STDC_WANT_IEC_60559_BFP_EXT__ | |
46 | macro. */ | |
47 | #undef __GLIBC_USE_IEC_60559_BFP_EXT | |
48 | #if defined __USE_GNU || defined __STDC_WANT_IEC_60559_BFP_EXT__ | |
49 | # define __GLIBC_USE_IEC_60559_BFP_EXT 1 | |
50 | #else | |
51 | # define __GLIBC_USE_IEC_60559_BFP_EXT 0 | |
52 | #endif | |
412cb261 JM |
53 | |
54 | /* ISO/IEC TS 18661-4:2015 defines the | |
55 | __STDC_WANT_IEC_60559_FUNCS_EXT__ macro. */ | |
56 | #undef __GLIBC_USE_IEC_60559_FUNCS_EXT | |
57 | #if defined __USE_GNU || defined __STDC_WANT_IEC_60559_FUNCS_EXT__ | |
58 | # define __GLIBC_USE_IEC_60559_FUNCS_EXT 1 | |
59 | #else | |
60 | # define __GLIBC_USE_IEC_60559_FUNCS_EXT 0 | |
61 | #endif |