include/memalloc.h

   1 /* memalloc.h -- consolidate code for including alloca.h or malloc.h and
   2    defining alloca. */
   3
   4 /* Copyright (C) 1993 Free Software Foundation, Inc.
   5
   6    This file is part of GNU Bash, the Bourne Again SHell.
   7
   8    Bash is free software: you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation, either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    Bash is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with Bash.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #if !defined (_MEMALLOC_H_)
  23 #  define _MEMALLOC_H_
  24
  25 #if defined (sparc) && defined (sun) && !defined (HAVE_ALLOCA_H)
  26 #  define HAVE_ALLOCA_H
  27 #endif
  28
  29 #if defined (__GNUC__) && !defined (HAVE_ALLOCA)
  30 #  define HAVE_ALLOCA
  31 #endif
  32
  33 #if defined (HAVE_ALLOCA_H) && !defined (HAVE_ALLOCA) && !defined (C_ALLOCA)
  34 #  define HAVE_ALLOCA
  35 #endif /* HAVE_ALLOCA_H && !HAVE_ALLOCA */
  36
  37 #if defined (__GNUC__) && !defined (C_ALLOCA)
  38 #  undef alloca
  39 #  define alloca __builtin_alloca
  40 #else /* !__GNUC__ || C_ALLOCA */
  41 #  if defined (HAVE_ALLOCA_H) && !defined (C_ALLOCA)
  42 #    if defined (IBMESA)
  43 #      include <malloc.h>
  44 #    else /* !IBMESA */
  45 #      include <alloca.h>
  46 #    endif /* !IBMESA */
  47 #  else  /* !HAVE_ALLOCA_H || C_ALLOCA */
  48 #    if defined (__hpux) && defined (__STDC__) && !defined (alloca)
  49 extern void *alloca ();
  50 #    else
  51 #      if !defined (alloca)
  52 #        if defined (__STDC__)
  53 extern void *alloca (size_t);
  54 #        else
  55 extern char *alloca ();
  56 #        endif /* !__STDC__ */
  57 #      endif /* !alloca */
  58 #    endif /* !__hpux || !__STDC__ && !alloca */
  59 #  endif /* !HAVE_ALLOCA_H || C_ALLOCA */
  60 #endif /* !__GNUC__ || C_ALLOCA */
  61
  62 #endif /* _MEMALLOC_H_ */