+
+#if defined(STDC_HEADERS) || defined(HAVE_CTYPE_H)
+# include <ctype.h>
+#endif
+
+#include <errno.h>
+#ifndef errno
+extern int errno;
+#endif
+
+#if PROTOTYPES
+# define PARAMS(p) p
+#else
+# define PARAMS(p) ()
+#endif
+
+/*-----------------.
+| GCC extensions. |
+`-----------------*/
+
+#ifndef __attribute__
+/* This feature is available in gcc versions 2.5 and later. */
+# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
+# define __attribute__(Spec) /* empty */
+# endif
+/* The __-protected variants of `format' and `printf' attributes
+ are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */
+# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
+# define __format__ format
+# define __printf__ printf
+# endif
+#endif
+
+
+/*------.
+| NLS. |
+`------*/
+
+#ifdef HAVE_LOCALE_H
+# include <locale.h>
+#endif
+#ifndef HAVE_SETLOCALE
+# define setlocale(Category, Locale)
+#endif
+
+#ifdef ENABLE_NLS
+# include <libintl.h>
+# define _(Text) gettext (Text)
+#else
+# undef bindtextdomain
+# define bindtextdomain(Domain, Directory)
+# undef textdomain
+# define textdomain(Domain)
+# define _(Text) Text
+#endif
+#define N_(Text) Text
+
+
+/*-------------------------------.
+| Fix broken compilation flags. |
+`-------------------------------*/
+
+#ifndef LOCALEDIR
+# define LOCALEDIR "/usr/local/share/locale"
+#endif
+
+#endif /* BISON_SYSTEM_H */
+
+
+/*-----------.
+| Booleans. |
+`-----------*/
+
+#ifndef TRUE
+# define TRUE (1)
+# define FALSE (0)
+#endif
+typedef int bool;
+
+
+/*-----------.
+| Obstacks. |
+`-----------*/
+
+#define obstack_chunk_alloc xmalloc
+#define obstack_chunk_free free
+#include "obstack.h"
+
+#define obstack_sgrow(Obs, Str) \
+ obstack_grow (Obs, Str, strlen (Str))
+
+#define obstack_fgrow1(Obs, Format, Arg1) \
+do { \
+ char buf[4096]; \
+ sprintf (buf, Format, Arg1); \
+ obstack_grow (Obs, buf, strlen (buf)); \
+} while (0)
+
+#define obstack_fgrow2(Obs, Format, Arg1, Arg2) \
+do { \
+ char buf[4096]; \
+ sprintf (buf, Format, Arg1, Arg2); \
+ obstack_grow (Obs, buf, strlen (buf)); \
+} while (0)
+
+#define obstack_fgrow3(Obs, Format, Arg1, Arg2, Arg3) \
+do { \
+ char buf[4096]; \
+ sprintf (buf, Format, Arg1, Arg2, Arg3); \
+ obstack_grow (Obs, buf, strlen (buf)); \
+} while (0)
+
+#define obstack_fgrow4(Obs, Format, Arg1, Arg2, Arg3, Arg4) \
+do { \
+ char buf[4096]; \
+ sprintf (buf, Format, Arg1, Arg2, Arg3, Arg4); \
+ obstack_grow (Obs, buf, strlen (buf)); \
+} while (0)
+
+
+/*---------------------------------.
+| Machine-dependencies for Bison. |
+`---------------------------------*/
+
+#ifdef eta10
+# define MAXSHORT 2147483647
+# define MINSHORT -2147483648
+#else
+# define MAXSHORT 32767
+# define MINSHORT -32768
+#endif
+
+#if defined (MSDOS) && !defined (__GO32__)
+# define BITS_PER_WORD 16
+# define MAXTABLE 16383
+#else
+# define BITS_PER_WORD 32
+# define MAXTABLE 32767
+#endif
+
+#define WORDSIZE(n) (((n) + BITS_PER_WORD - 1) / BITS_PER_WORD)
+#define SETBIT(x, i) ((x)[(i)/BITS_PER_WORD] |= (1<<((i) % BITS_PER_WORD)))
+#define RESETBIT(x, i) ((x)[(i)/BITS_PER_WORD] &= ~(1<<((i) % BITS_PER_WORD)))
+#define BITISSET(x, i) (((x)[(i)/BITS_PER_WORD] & (1<<((i) % BITS_PER_WORD))) != 0)
+
+
+/* Extensions to use for the output files. */
+
+#ifdef VMS
+ /* VMS. */
+# define EXT_TAB "_tab"
+# define EXT_OUTPUT ".output"
+# define EXT_STYPE_H "_stype"
+# define EXT_GUARD_C "_guard"
+#else /* ! VMS */
+# ifdef MSDOS
+ /* MS DOS. */
+# define EXT_TAB "_tab"
+# define EXT_OUTPUT ".out"
+# define EXT_STYPE_H ".sth"
+# define EXT_GUARD_C ".guc"
+# else /* ! MSDOS */
+ /* Standard. */
+# define EXT_TAB ".tab"
+# define EXT_OUTPUT ".output"
+# define EXT_STYPE_H ".stype"
+# define EXT_GUARD_C ".guard"
+# endif /* ! MSDOS */
+#endif /* ! VMS */
+
+#if defined (VMS) & !defined (__VMS_POSIX)
+# ifndef BISON_SIMPLE
+# define BISON_SIMPLE "GNU_BISON:[000000]BISON.SIMPLE"
+# endif
+# ifndef BISON_HAIRY
+# define BISON_HARIRY "GNU_BISON:[000000]BISON.HAIRY"
+# endif
+#endif
+
+#if defined (_MSC_VER)
+# ifndef BISON_SIMPLE
+# define BISON_SIMPLE "c:/usr/local/lib/bison.simple"
+# endif
+# ifndef BISON_HAIRY
+# define BISON_HAIRY "c:/usr/local/lib/bison.hairy"
+# endif
+#endif