1  /* getopt (basic, portable features) gnulib wrapper header.
       2     Copyright (C) 1989-2023 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
       8     it under the terms of the GNU Lesser General Public License as
       9     published by the Free Software Foundation; either version 2.1 of the
      10     License, or (at your option) any later version.
      11  
      12     This file is distributed in the hope that it will be useful,
      13     but WITHOUT ANY WARRANTY; without even the implied warranty of
      14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      15     GNU Lesser General Public License for more details.
      16  
      17     You should have received a copy of the GNU Lesser General Public License
      18     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      19  
      20  #ifndef _GETOPT_PFX_CORE_H
      21  #define _GETOPT_PFX_CORE_H 1
      22  
      23  /* This header should not be used directly; include getopt.h or
      24     unistd.h instead.  It does not have a protective #error, because
      25     the guard macro for getopt.h in gnulib is not fixed.  */
      26  
      27  /* Standalone applications should #define __GETOPT_PREFIX to an
      28     identifier that prefixes the external functions and variables
      29     defined in getopt-core.h and getopt-ext.h.  Systematically
      30     rename identifiers so that they do not collide with the system
      31     functions and variables.  Renaming avoids problems with some
      32     compilers and linkers.  */
      33  #ifdef __GETOPT_PREFIX
      34  # ifndef __GETOPT_ID
      35  #  define __GETOPT_CONCAT(x, y) x ## y
      36  #  define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
      37  #  define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
      38  # endif
      39  # undef getopt
      40  # undef optarg
      41  # undef opterr
      42  # undef optind
      43  # undef optopt
      44  # define getopt __GETOPT_ID (getopt)
      45  # define optarg __GETOPT_ID (optarg)
      46  # define opterr __GETOPT_ID (opterr)
      47  # define optind __GETOPT_ID (optind)
      48  # define optopt __GETOPT_ID (optopt)
      49  
      50  /* Work around a problem on macOS, which declares getopt with a
      51     trailing __DARWIN_ALIAS(getopt) that would expand to something like
      52     __asm("_" "rpl_getopt" "$UNIX2003") were it not for the following
      53     hack to suppress the macOS declaration <https://bugs.gnu.org/40205>.  */
      54  # ifdef __APPLE__
      55  #  define _GETOPT
      56  # endif
      57  
      58  /* The system's getopt.h may have already included getopt-core.h to
      59     declare the unprefixed identifiers.  Undef _GETOPT_CORE_H so that
      60     getopt-core.h declares them with prefixes.  */
      61  # undef _GETOPT_CORE_H
      62  #endif
      63  
      64  #include <getopt-core.h>
      65  
      66  #endif /* _GETOPT_PFX_CORE_H */