lib/getopt-cdefs.in.h

   1 /* getopt-on-non-glibc compatibility macros.
   2    Copyright (C) 1989-2021 Free Software Foundation, Inc.
   3    This file is part of gnulib.
   4    Unlike most of the getopt implementation, it is NOT shared
   5    with the GNU C Library.
   6
   7    This file is free software; you can redistribute it and/or modify it
   8    under the terms of the GNU Lesser General Public License as
   9    published by the Free Software Foundation; either version 2.1 of
  10    the License, or (at your option) any later version.
  11
  12    This file is distributed in the hope that it will be useful, but
  13    WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    Lesser General Public License for more details.
  16
  17    You should have received a copy of the GNU Lesser General Public
  18    License along with gnulib; if not, see
  19    <https://www.gnu.org/licenses/>.  */
  20
  21 #ifndef _GETOPT_CDEFS_H
  22 #define _GETOPT_CDEFS_H 1
  23
  24 /* This header should not be used directly; include getopt.h or
  25    unistd.h instead.  It does not have a protective #error, because
  26    the guard macro for getopt.h in gnulib is not fixed.  */
  27
  28 /* getopt-core.h and getopt-ext.h are shared with GNU libc, and expect
  29    a number of the internal macros supplied to GNU libc's headers by
  30    sys/cdefs.h.  Provide fallback definitions for all of them.  */
  31 #if @HAVE_SYS_CDEFS_H@
  32 # include <sys/cdefs.h>
  33 #endif
  34
  35 #ifndef __BEGIN_DECLS
  36 # ifdef __cplusplus
  37 #  define __BEGIN_DECLS extern "C" {
  38 # else
  39 #  define __BEGIN_DECLS /* nothing */
  40 # endif
  41 #endif
  42 #ifndef __END_DECLS
  43 # ifdef __cplusplus
  44 #  define __END_DECLS }
  45 # else
  46 #  define __END_DECLS /* nothing */
  47 # endif
  48 #endif
  49
  50 #ifndef __GNUC_PREREQ
  51 # if defined __GNUC__ && defined __GNUC_VERSION__
  52 # define __GNUC_PREREQ(maj, min) \
  53         ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
  54 # else
  55 #  define __GNUC_PREREQ(maj, min) 0
  56 # endif
  57 #endif
  58
  59 #ifndef __THROW
  60 # if defined __cplusplus && (__GNUC_PREREQ (2,8) || __clang_major__ >= 4)
  61 #  define __THROW       throw ()
  62 # else
  63 #  define __THROW
  64 # endif
  65 #endif
  66
  67 #endif /* _GETOPT_CDEFS_H */