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265 lines
8 KiB
C
265 lines
8 KiB
C
/* This file is the configuration file for the Linux operating system.
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Copyright (C) 1985, 1986, 1992, 1994 Free Software Foundation, Inc.
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This file is part of GNU Emacs.
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GNU Emacs is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Emacs is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Emacs; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* This file was put together by Michael K. Johnson and Rik Faith. */
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/*
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* Define symbols to identify the version of Unix this is.
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* Define all the symbols that apply correctly.
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*/
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/* #define UNIPLUS */
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/* #define USG5 */
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#define USG
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/* #define BSD */
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#define LINUX
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/* SYSTEM_TYPE should indicate the kind of system you are using.
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It sets the Lisp variable system-type. */
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#define SYSTEM_TYPE "linux" /* All the best software is free. */
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/* Emacs can read input using SIGIO and buffering characters itself,
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or using CBREAK mode and making C-g cause SIGINT.
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The choice is controlled by the variable interrupt_input.
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Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
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SIGIO can be used only on systems that implement it (4.2 and 4.3).
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CBREAK mode has two disadvantages
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1) At least in 4.2, it is impossible to handle the Meta key properly.
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I hear that in system V this problem does not exist.
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2) Control-G causes output to be discarded.
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I do not know whether this can be fixed in system V.
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Another method of doing input is planned but not implemented.
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It would have Emacs fork off a separate process
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to read the input and send it to the true Emacs process
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through a pipe.
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*/
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/* There have been suggestions made to add SIGIO to Linux. If this
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is done, you may, at your discretion, uncomment the line below.
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*/
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/* #define INTERRUPT_INPUT */
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/* Letter to use in finding device name of first pty,
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if system supports pty's. 'p' means it is /dev/ptyp0 */
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#define FIRST_PTY_LETTER 'p'
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/*
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* Define HAVE_TERMIOS if the system provides POSIX-style
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* functions and macros for terminal control.
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*/
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#define HAVE_TERMIOS
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/*
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* Define HAVE_TIMEVAL if the system supports the BSD style clock values.
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* Look in <sys/time.h> for a timeval structure.
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*/
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#define HAVE_TIMEVAL
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/*
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* Define HAVE_SELECT if the system supports the `select' system call.
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*/
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#define HAVE_SELECT
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/*
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* Define HAVE_PTYS if the system supports pty devices.
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*/
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#define HAVE_PTYS
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/* Uncomment this later when other problems are dealt with -mkj */
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#define HAVE_SOCKETS
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/* Define this symbol if your system has the functions bcopy, etc. */
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#define BSTRING
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/* subprocesses should be defined if you want to
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have code for asynchronous subprocesses
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(as used in M-x compile and M-x shell).
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This is generally OS dependent, and not supported
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under most USG systems. */
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#define subprocesses
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/* define MAIL_USE_FLOCK if the mailer uses flock
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to interlock access to /usr/spool/mail/$USER.
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The alternative is that a lock file named
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/usr/spool/mail/$USER.lock. */
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/* Both are used in Linux by different mail programs. I assume that most
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people are using newer mailers that have heard of flock. Change this
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if you need to. */
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#define MAIL_USE_FLOCK
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/* Define CLASH_DETECTION if you want lock files to be written
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so that Emacs can tell instantly when you try to modify
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a file that someone else has modified in his Emacs. */
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#define CLASH_DETECTION
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/* Here, on a separate page, add any special hacks needed
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to make Emacs work on this system. For example,
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you might define certain system call names that don't
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exist on your system, or that do different things on
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your system and must be used only through an encapsulation
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(Which you should place, by convention, in sysdep.c). */
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/* On POSIX systems the system calls are interruptible by signals
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that the user program has elected to catch. Thus the system call
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must be retried in these cases. To handle this without massive
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changes in the source code, we remap the standard system call names
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to names for our own functions in sysdep.c that do the system call
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with retries. */
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#define read sys_read
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#define write sys_write
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#define open sys_open
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#define close sys_close
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#define INTERRUPTIBLE_OPEN
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#define INTERRUPTIBLE_CLOSE
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#define INTERRUPTIBLE_IO
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/* If you mount the proc file system somewhere other than /proc
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you will have to uncomment the following and make the proper
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changes */
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/* #define LINUX_LDAV_FILE "/proc/loadavg" */
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/* This is needed for disknew.c:update_frame */
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#ifdef emacs
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#include <stdio.h> /* Get the definition of _IO_STDIO_H. */
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#ifdef _IO_STDIO_H
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/* new C libio names */
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#define GNU_LIBRARY_PENDING_OUTPUT_COUNT(FILE) \
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((FILE)->_IO_write_ptr - (FILE)->_IO_write_base)
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#else /* !_IO_STDIO_H */
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/* old C++ iostream names */
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#define GNU_LIBRARY_PENDING_OUTPUT_COUNT(FILE) \
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((FILE)->_pptr - (FILE)->_pbase)
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#endif /* !_IO_STDIO_H */
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#endif /* emacs */
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/* Linux has crt0.o in a non-standard place */
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#define START_FILES pre-crt0.o /usr/lib/crt0.o
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/* As of version 1.1.51, Linux does not actually implement SIGIO. */
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/* Here we assume that signal.h is already included. */
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#ifdef emacs
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#undef SIGIO
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#endif
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/* This is needed for sysdep.c */
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#define NO_SIOCTL_H /* don't have sioctl.h */
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#define HAVE_VFORK
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#define HAVE_SYS_SIGLIST
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#define HAVE_GETWD /* cure conflict with getcwd? */
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#define SYSV_SYSTEM_DIR /* use dirent.h */
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#define POSIX /* affects getpagesize.h and systty.h */
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#define POSIX_SIGNALS
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/* libc-linux/sysdeps/linux/i386/ulimit.c says that due to shared library, */
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/* we cannot get the maximum address for brk */
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#define ULIMIT_BREAK_VALUE (32*1024*1024)
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#define SEGMENT_MASK ((SEGMENT_SIZE)-1)
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/* Best not to include -lg, unless it is last on the command line */
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#define LIBS_DEBUG
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#define LIBS_TERMCAP -ltermcap -lcurses /* save some space with shared libs*/
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#define LIB_STANDARD -lc /* avoid -lPW */
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/* Don't use -g in test compiles in configure.
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This is so we will use the same shared libs for that linking
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that are used when linking temacs. */
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#ifdef THIS_IS_CONFIGURE
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#define C_DEBUG_SWITCH
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#endif
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/* Let's try this out, just in case.
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Nah. Rik Faith <faith@cs.unc.edu> says it doesn't work well. */
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/* #define SIGNALS_VIA_CHARACTERS */
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/* Rob Malouf <malouf@csli.stanford.edu> says:
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SYSV IPC is standard a standard part of Linux since version 0.99pl10,
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and is a very common addition to previous versions. */
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#ifdef TERM
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#define LIBS_MACHINE -lclient
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#define C_SWITCH_SYSTEM -D_BSD_SOURCE -I/usr/src/term
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#else
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/* alane@wozzle.linet.org says that -lipc is not a separate library,
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since libc-4.4.1. So -lipc was deleted. */
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#define LIBS_MACHINE
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#define C_SWITCH_SYSTEM -D_BSD_SOURCE
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#endif
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#define HAVE_SYSVIPC
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#ifdef LINUX_QMAGIC
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#define HAVE_TEXT_START
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#define UNEXEC unexsunos4.o
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#define N_PAGSIZ(x) PAGE_SIZE
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#else /* not LINUX_QMAGIC */
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#define A_TEXT_OFFSET(hdr) (N_MAGIC(hdr) == QMAGIC ? sizeof (struct exec) : 0)
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#define A_TEXT_SEEK(hdr) (N_TXTOFF(hdr) + A_TEXT_OFFSET(hdr))
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#define ADJUST_EXEC_HEADER \
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unexec_text_start = N_TXTADDR(ohdr) + A_TEXT_OFFSET(ohdr)
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#endif /* not LINUX_QMAGIC */
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#if 0
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/* In 19.23 and 19.24, configure sometimes fails to define these.
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It has to do with the fact that configure uses CFLAGS when linking
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while Makefile.in.in (erroneously) fails to do so when linking temacs. */
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#ifndef HAVE_GETTIMEOFDAY
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#define HAVE_GETTIMEOFDAY
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#endif
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#ifndef HAVE_MKDIR
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#define HAVE_MKDIR
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#endif
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#ifndef HAVE_RMDIR
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#define HAVE_RMDIR
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#endif
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#ifndef HAVE_XSCREENNUMBEROFSCREEN
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#define HAVE_XSCREENNUMBEROFSCREEN
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#endif
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#ifndef HAVE_XRMSETDATABASE
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#define HAVE_XRMSETDATABASE
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#endif
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#endif /* 0 */
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