diff options
Diffstat (limited to 'src/s-rtu.h')
| -rw-r--r-- | src/s-rtu.h | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/src/s-rtu.h b/src/s-rtu.h new file mode 100644 index 00000000000..73bf9c98c5d --- /dev/null +++ b/src/s-rtu.h @@ -0,0 +1,160 @@ +/* Definitions file for GNU Emacs running on RTU 3.0, ucb universe. + Copyright (C) 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 1, 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 BSD4_2 +#define BSD +#define RTU + +/* SYSTEM_TYPE should indicate the kind of system you are using. + It sets the Lisp variable system-type. */ + +#define SYSTEM_TYPE "rtu" + +/* 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 disadvatages + 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. +*/ + +#undef 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 'z' /* i.e. no PTY_LETTERs */ + +/* + * 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 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. */ +/* The system library bcopy() is broken in RTU. For one thing, it expects + the length to be less than 64k. */ +#undef 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". */ + +#undef 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. */ + +#undef 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. */ + +#undef CLASH_DETECTION + +/* We use the Berkeley (and usg5.2.2) interface to nlist. */ + +#define NLIST_STRUCT + +/* The symbol in the kernel where the load average is found + is named _avenrun. */ + +#define LDAV_SYMBOL "_avenrun" + +/* Special hacks needed to make Emacs run on this system. */ + +/* On RTU systems (like USG) the system calls are interruptable by signals + that the user program has elected to catch. Thus the system call + must be retried in these cases. To handle this without massive + changes in the source code, we remap the standard system call names + to names for our own functions in sysdep.c that do the system call + with retries. */ + +#define read sys_read +#define open sys_open +#define write sys_write + +#define INTERRUPTABLE_OPEN +#define INTERRUPTABLE_IO + +/* The "fsync" call on RTU versions 3.0 and 3.1 is badly broken! + This hack below isn't the best solution, but without it this + program will cause the whole system to hang! !@#$#%$ Masscomp! */ + +#define fsync(x) 0 /* "Comment out" fsync calls */ + +/* RTU has IPC instead of Unix-domain sockets. */ + +#define HAVE_SYSVIPC |