1  /* Declarations for getopt (POSIX compatibility shim).
       2     Copyright (C) 1989-2023 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     <https://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 */