lib/getopt-cdefs.in.h

   1 /* getopt-on-non-glibc compatibility macros.
   2    Copyright (C) 1989-2017 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 General Public License as
   9    published by the Free Software Foundation; either version 3 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    General Public License for more details.
  16
  17    You should have received a copy of the GNU 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)
  61 #  define __THROW       throw ()
  62 # else
  63 #  define __THROW
  64 # endif
  65 #endif
  66
  67 #endif /* _GETOPT_CDEFS_H */