/usr/arm-linux-gnueabi/include/bits/libc-header-start.h is in libc6-dev-armel-cross 2.27-3ubuntu1cross1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 | /* Handle feature test macros at the start of a header.
Copyright (C) 2016-2018 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/>. */
/* This header is internal to glibc and should not be included outside
of glibc headers. Headers including it must define
__GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION first. This header
cannot have multiple include guards because ISO C feature test
macros depend on the definition of the macro when an affected
header is included, not when the first system header is
included. */
#ifndef __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION
# error "Never include <bits/libc-header-start.h> directly."
#endif
#undef __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION
#include <features.h>
/* ISO/IEC TR 24731-2:2010 defines the __STDC_WANT_LIB_EXT2__
macro. */
#undef __GLIBC_USE_LIB_EXT2
#if (defined __USE_GNU \
|| (defined __STDC_WANT_LIB_EXT2__ && __STDC_WANT_LIB_EXT2__ > 0))
# define __GLIBC_USE_LIB_EXT2 1
#else
# define __GLIBC_USE_LIB_EXT2 0
#endif
/* ISO/IEC TS 18661-1:2014 defines the __STDC_WANT_IEC_60559_BFP_EXT__
macro. */
#undef __GLIBC_USE_IEC_60559_BFP_EXT
#if defined __USE_GNU || defined __STDC_WANT_IEC_60559_BFP_EXT__
# define __GLIBC_USE_IEC_60559_BFP_EXT 1
#else
# define __GLIBC_USE_IEC_60559_BFP_EXT 0
#endif
/* ISO/IEC TS 18661-4:2015 defines the
__STDC_WANT_IEC_60559_FUNCS_EXT__ macro. */
#undef __GLIBC_USE_IEC_60559_FUNCS_EXT
#if defined __USE_GNU || defined __STDC_WANT_IEC_60559_FUNCS_EXT__
# define __GLIBC_USE_IEC_60559_FUNCS_EXT 1
#else
# define __GLIBC_USE_IEC_60559_FUNCS_EXT 0
#endif
/* ISO/IEC TS 18661-3:2015 defines the
__STDC_WANT_IEC_60559_TYPES_EXT__ macro. */
#undef __GLIBC_USE_IEC_60559_TYPES_EXT
#if defined __USE_GNU || defined __STDC_WANT_IEC_60559_TYPES_EXT__
# define __GLIBC_USE_IEC_60559_TYPES_EXT 1
#else
# define __GLIBC_USE_IEC_60559_TYPES_EXT 0
#endif
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