include/alloca-conf.h

   1 #include "config.h"
   2
   3 /* This is a merge of code recommended in the autoconf-2.61 documentation
   4    with that recommended in the autoconf-2.13 documentation, with added
   5    tweaks to heed C_ALLOCA.  */
   6
   7 #if defined HAVE_ALLOCA_H && !defined C_ALLOCA
   8 # include <alloca.h>
   9 #else
  10 # if defined __GNUC__ && !defined C_ALLOCA
  11 #  if !defined alloca
  12 #   define alloca __builtin_alloca
  13 #  endif
  14 # else
  15 #  if defined _AIX
  16 /* Indented so that pre-ansi C compilers will ignore it, rather than
  17    choke on it.  Some versions of AIX require this to be the first
  18    thing in the file except for comments and preprocessor directives.  */
  19     #pragma alloca
  20 #  else
  21 #   if defined _MSC_VER && !defined C_ALLOCA
  22 #    include <malloc.h>
  23 #    define alloca _alloca
  24 #   else
  25 #    if !defined alloca
  26 #     if defined __STDC__ || defined __hpux
  27 #      if defined HAVE_STDDEF_H
  28 #       include <stddef.h>
  29 #       if defined  __cplusplus
  30 extern "C" void *alloca (size_t);
  31 #       else
  32 extern void *alloca (size_t);
  33 #       endif
  34 #      else
  35 extern void *alloca ();
  36 #      endif
  37 #     else
  38 extern char *alloca ();
  39 #     endif
  40 #    endif
  41 #   endif
  42 #  endif
  43 # endif
  44 #endif