/* Copyright (C) 2012-2018 Free Software Foundation, Inc.

   This program is free software: you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include "config.h"

/* This is a merge of code recommended in the autoconf-2.61 documentation

   with that recommended in the autoconf-2.13 documentation, with added

   tweaks to heed C_ALLOCA.  */

#if defined HAVE_ALLOCA_H && !defined C_ALLOCA

# include <alloca.h>

#else

# if defined __GNUC__ && !defined C_ALLOCA

#  if !defined alloca

#   define alloca __builtin_alloca

#  endif

# else

#  if defined _AIX

/* Indented so that pre-ansi C compilers will ignore it, rather than

   choke on it.  Some versions of AIX require this to be the first

   thing seen by the compiler except for comments and preprocessor

   directives.  */

    #pragma alloca

#  else

#   if defined _MSC_VER && !defined C_ALLOCA

#    include <malloc.h>

#    define alloca _alloca

#   else

#    if !defined alloca

#     if defined __STDC__ || defined __hpux

#      if defined HAVE_STDDEF_H

#       include <stddef.h>

#       if defined  __cplusplus

extern "C" void *alloca (size_t);

#       else

extern void *alloca (size_t);

#       endif

#      else

extern void *alloca ();

#      endif

#     else

extern char *alloca ();

#     endif

#    endif

#   endif

#  endif

# endif

#endif