1  /* Default definition for ARGP_PROGRAM_VERSION_HOOK.
       2     Copyright (C) 1996-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4     Written by Miles Bader <miles@gnu.ai.mit.edu>.
       5  
       6     This file is free software: you can redistribute it and/or modify
       7     it under the terms of the GNU Lesser General Public License as
       8     published by the Free Software Foundation, either version 3 of the
       9     License, or (at your option) any later version.
      10  
      11     This file 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
      14     GNU Lesser General Public License for more details.
      15  
      16     You should have received a copy of the GNU Lesser General Public License
      17     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      18  
      19  #ifdef HAVE_CONFIG_H
      20  # include <config.h>
      21  #endif
      22  
      23  #include "argp.h"
      24  
      25  /* If set by the user program to a non-zero value, then a default option
      26     --version is added (unless the ARGP_NO_HELP flag is used), which calls
      27     this function with a stream to print the version to and a pointer to the
      28     current parsing state, and then exits (unless the ARGP_NO_EXIT flag is
      29     used).  This variable takes precedent over ARGP_PROGRAM_VERSION.  */
      30  void (*argp_program_version_hook) (FILE *stream, struct argp_state *state) = NULL;