modernc.org/cc@v1.0.1/v2/headers/linux_386/usr/include/i386-linux-gnu/bits/libc-header-start.h (about)

     1  /* Handle feature test macros at the start of a header.
     2     Copyright (C) 2016-2018 Free Software Foundation, Inc.
     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
    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
    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
    62  
    63  /* ISO/IEC TS 18661-3:2015 defines the
    64     __STDC_WANT_IEC_60559_TYPES_EXT__ macro.  */
    65  #undef __GLIBC_USE_IEC_60559_TYPES_EXT
    66  #if defined __USE_GNU || defined __STDC_WANT_IEC_60559_TYPES_EXT__
    67  # define __GLIBC_USE_IEC_60559_TYPES_EXT 1
    68  #else
    69  # define __GLIBC_USE_IEC_60559_TYPES_EXT 0
    70  #endif