posix/bits/getopt_posix.h

   1 /* Declarations for getopt (POSIX compatibility shim).
   2    Copyright (C) 1989-2017 Free Software Foundation, Inc.
   3    Unlike the bulk of the getopt implementation, this file is NOT part
   4    of gnulib.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef _GETOPT_POSIX_H
  21 #define _GETOPT_POSIX_H 1
  22
  23 #if !defined _UNISTD_H && !defined _STDIO_H
  24 #error "Never include getopt_posix.h directly; use unistd.h instead."
  25 #endif
  26
  27 #include <bits/getopt_core.h>
  28
  29 __BEGIN_DECLS
  30
  31 #if defined __USE_POSIX2 && !defined __USE_POSIX_IMPLICITLY \
  32     && !defined __USE_GNU && !defined _GETOPT_H
  33 /* GNU getopt has more functionality than POSIX getopt.  When we are
  34    explicitly conforming to POSIX and not GNU, and getopt.h (which is
  35    not part of POSIX) has not been included, the extra functionality
  36    is disabled.  */
  37 # ifdef __REDIRECT
  38 extern int __REDIRECT_NTH (getopt, (int ___argc, char *const *___argv,
  39                                     const char *__shortopts),
  40                            __posix_getopt);
  41 # else
  42 extern int __posix_getopt (int ___argc, char *const *___argv,
  43                            const char *__shortopts)
  44   __THROW __nonnull ((2, 3));
  45 #  define getopt __posix_getopt
  46 # endif
  47 #endif
  48
  49 __END_DECLS
  50
  51 #endif /* getopt_posix.h */