* src/derives.h: New file.

[bison.git] / src / system.h

/* system-dependent definitions for Bison.
   Copyright (C) 2000 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 2, 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, write to the Free Software Foundation,
   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#ifndef BISON_SYSTEM_H
#define BISON_SYSTEM_H

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include <stdio.h>

#ifdef MSDOS
# include <io.h>
#endif

#ifdef _MSC_VER
# include <stdlib.h>
# include <process.h>
# define getpid _getpid
#endif

#if defined(HAVE_STDLIB_H) || defined(MSDOS)
# include <stdlib.h>
#endif

#if defined(HAVE_UNISTD_H)
# include <unistd.h>
#endif

#if (defined(VMS) || defined(MSDOS)) && !defined(HAVE_STRING_H)
# define HAVE_STRING_H 1
#endif

#if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
# include <string.h>
/* An ANSI string.h and pre-ANSI memory.h might conflict.  */
# if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H)
#  include <memory.h>
# endif /* not STDC_HEADERS and HAVE_MEMORY_H */
# ifndef bcopy
#  define bcopy(src, dst, num) memcpy((dst), (src), (num))
# endif
#else /* not STDC_HEADERS and not HAVE_STRING_H */
# include <strings.h>
/* memory.h and strings.h conflict on some systems.  */
#endif /* not STDC_HEADERS and not HAVE_STRING_H */

#if defined(STDC_HEADERS) || defined(HAVE_CTYPE_H)
# include <ctype.h>
#endif

#include <errno.h>
#ifndef errno
extern int errno;
#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 */


/*---------------------------------.
| 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)