(HAVE_VFORK): Defined.

[bpt/emacs.git] / src / s / umax.h

/* Definitions file for GNU Emacs running on UMAX 4.2
   Copyright (C) 1985, 1986 Free Software Foundation, Inc.

This file is part of GNU Emacs.

GNU Emacs 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.

GNU Emacs 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 GNU Emacs; see the file COPYING.  If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */


/*
 *	Define symbols to identify the version of Unix this is.
 *	Define all the symbols that apply correctly.
 */

/* #define UNIPLUS */
/* #define USG5 */
/* #define USG */
/* #define BSD4_1 */
#define BSD4_2
/* #define BSD4_3 */
#define BSD
#define UMAX4_2
#define UMAX
/* #define VMS */

/* SYSTEM_TYPE should indicate the kind of system you are using.
 It sets the Lisp variable system-type.  */

#define SYSTEM_TYPE "berkeley-unix"

/* NOMULTIPLEJOBS should be defined if your system's shell
 does not have "job control" (the ability to stop a program,
 run some other program, then continue the first one).  */

/* #define NOMULTIPLEJOBS */

/* Emacs can read input using SIGIO and buffering characters itself,
   or using CBREAK mode and making C-g cause SIGINT.
   The choice is controlled by the variable interrupt_input.
   Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)

   SIGIO can be used only on systems that implement it (4.2 and 4.3).
   CBREAK mode has two disadvantages
     1) At least in 4.2, it is impossible to handle the Meta key properly.
        I hear that in system V this problem does not exist.
     2) Control-G causes output to be discarded.
        I do not know whether this can be fixed in system V.

   Another method of doing input is planned but not implemented.
   It would have Emacs fork off a separate process
   to read the input and send it to the true Emacs process
   through a pipe.
*/

#define INTERRUPT_INPUT

/* Letter to use in finding device name of first pty,
  if system supports pty's.  'a' means it is /dev/ptya0  */

#define FIRST_PTY_LETTER 'p'

/*
 *	Define HAVE_TIMEVAL if the system supports the BSD style clock values.
 *	Look in <sys/time.h> for a timeval structure.
 */

#define HAVE_TIMEVAL

/*
 *	Define HAVE_SELECT if the system supports the `select' system call.
 */

#define HAVE_SELECT

/*
 *	Define HAVE_PTYS if the system supports pty devices.
 */

#define HAVE_PTYS

/* Define this macro if system defines a type `union wait'.  */

#define HAVE_UNION_WAIT

/* Define HAVE_SOCKETS if system supports 4.2-compatible sockets.  */

#define HAVE_SOCKETS

/*
 *	Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
 *      The 4.2 opendir, etc., library functions.
 */

/* #define NONSYSTEM_DIR_LIBRARY */

/* Define this symbol if your system has the functions bcopy, etc. */

#define BSTRING

/* subprocesses should be defined if you want to
   have code for asynchronous subprocesses
   (as used in M-x compile and M-x shell).
   This is generally OS dependent, and not supported
   under most USG systems. */

#define subprocesses

/* If your system uses COFF (Common Object File Format) then define the
   preprocessor symbol "COFF". */

#define COFF

/* define MAIL_USE_FLOCK if the mailer uses flock
   to interlock access to /usr/spool/mail/$USER.
   The alternative is that a lock file named
   /usr/spool/mail/$USER.lock.  */

#define MAIL_USE_FLOCK

/* Define CLASH_DETECTION if you want lock files to be written
   so that Emacs can tell instantly when you try to modify
   a file that someone else has modified in his Emacs.  */

#define CLASH_DETECTION

/* We use the Berkeley (and usg5.2.2) interface to nlist.  */

#define NLIST_STRUCT

/* The file containing the kernel's symbol table is called /vmunix.  */

#define KERNEL_FILE "/vmunix"

/* The symbol in the kernel where the load average is found
   is named _avenrun.  */

#define LDAV_SYMBOL "_avenrun"

/* Here, on a separate page, add any special hacks needed
   to make Emacs work on this system.  For example,
   you might define certain system call names that don't
   exist on your system, or that do different things on
   your system and must be used only through an encapsulation
   (Which you should place, by convention, in sysdep.c).  */

/* Specify alignment requirement for start of text and data sections
   in the executable file.  */

#define SECTION_ALIGNMENT pagemask


#define SEGMENT_MASK	(64 * 1024 - 1)


/* crt0.c needs this for compilation because it uses asm.  */  

#define C_SWITCH_ASM -q nodirect_code

/* Encore machines with APC processor boards align sections on 4M
   boundaries, so it is not easy to remap the start of the text segment
   in the unexec() routine.  For them you need the following two lines.
   For DPC processors you can enable these or not, as you wish, but
   you will get better performance without them.  */

/* #define NO_REMAP
   #define TEXT_START 0
*/

/* (Assume) we do have vfork.  */

#define HAVE_VFORK