/* Template for system description header files.
This file describes the parameters that system description files
should define or not.
- Copyright (C) 1985, 1986 Free Software Foundation, Inc.
+ Copyright (C) 1985, 1986, 1992 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 1, or (at your option)
+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,
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. */
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
/*
/* 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)
+ Emacs uses the presence or absence of the SIGIO macro to indicate
+ whether or not signal-driven I/O is possible. It uses
+ INTERRUPT_INPUT to decide whether to use it by default.
+
SIGIO can be used only on systems that implement it (4.2 and 4.3).
- CBREAK mode has two disadvatages
+ 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.
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.
-*/
+ through a pipe. */
#define INTERRUPT_INPUT
#define FIRST_PTY_LETTER 'a'
/*
- * Define HAVE_TIMEVAL if the system supports the BSD style clock values.
- * Look in <sys/time.h> for a timeval structure.
+ * Define HAVE_TERMIOS if the system provides POSIX-style
+ * functions and macros for terminal control.
+ *
+ * Define HAVE_TERMIO if the system provides sysV-style ioctls
+ * for terminal control.
+ *
+ * Do not define both. HAVE_TERMIOS is preferred, if it is
+ * supported on your system.
*/
-#define HAVE_TIMEVAL
-
-/*
- * Define HAVE_SELECT if the system supports the `select' system call.
- */
-
-/* #define HAVE_SELECT */
+#define HAVE_TERMIOS
+/* #define HAVE_TERMIO */
/*
* Define HAVE_PTYS if the system supports pty devices.
#define CLASH_DETECTION
-/* Here, on a separate page, add any special hacks needed
+/* Define this if your operating system declares signal handlers to
+ have a type other than the usual. `The usual' is `void' for ANSI C
+ systems (i.e. when the __STDC__ macro is defined), and `int' for
+ pre-ANSI systems. If you're using GCC on an older system, __STDC__
+ will be defined, but the system's include files will still say that
+ signal returns int or whatever; in situations like that, define
+ this to be what the system's include files want. */
+/* #define SIGTYPE int */
+
+/* If the character used to separate elements of the executable path
+ is not ':', #define this to be the appropriate character constant. */
+/* #define SEPCHAR ':' */
+
+/* ============================================================ */
+
+/* Here, 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). */
-\f
+
/* Some compilers tend to put everything declared static
into the initialized data area, which becomes pure after dumping Emacs.
On these systems, you must #define static as nothing to foil this.
Note that emacs carefully avoids static vars inside functions. */
/* #define static */
+
+/* ============================================================ */
+
+/* After adding support for a new system, modify the large case
+ statement in the `configure' script to recognize reasonable
+ configuration names, and add a description of the system to
+ `etc/MACHINES'.
+
+ If you've just fixed a problem in an existing configuration file,
+ you should also check `etc/MACHINES' to make sure its descriptions
+ of known problems in that configuration should be updated. */