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309 lines
9 KiB
C
309 lines
9 KiB
C
/* This file is the configuration file for Linux-based GNU systems
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Copyright (C) 1985, 1986, 1992, 1994, 1996 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, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, 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_SYSTEM */
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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 "gnu/linux" /* All the best software is free. */
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/* Check the version number of Linux--if it is at least 1.2.0,
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it is safe to use SIGIO. */
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#ifndef NOT_C_CODE
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#ifdef emacs
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#ifdef HAVE_LINUX_VERSION_H
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#include <linux/version.h>
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#if LINUX_VERSION_CODE > 0x10200
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#define LINUX_SIGIO_DOES_WORK
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#endif /* LINUX_VERSION_CODE > 0x10200 */
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#if LINUX_VERSION_CODE >= 0x20000
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#define LINUX_MAP_SHARED_DOES_WORK
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#endif /* LINUX_VERSION_CODE >= 0x20000 */
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#endif /* HAVE_LINUX_VERSION_H */
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#endif /* emacs */
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#endif /* NOT_C_CODE */
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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_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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/* On GNU/Linux systems, both methods are used by various mail
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programs. I assume that most people are using newer mailers that
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have heard of flock. Change this 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 dispnew.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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#if defined(_IO_STDIO_H) || defined(_STDIO_USES_IOSTREAM)
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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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/* Ask GCC where to find libgcc.a. */
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#define LIB_GCC `$(CC) $(C_SWITCH_X_SITE) -print-libgcc-file-name`
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#ifndef __ELF__
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/* GNU/Linux usually 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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#else
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#define START_FILES pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o
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#endif
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#ifdef __ELF__
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/* Here is how to find X Windows. LD_SWITCH_X_SITE_AUX gives an -R option
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says where to find X windows at run time. */
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#ifdef __mips__
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#define LD_SWITCH_SYSTEM -G 0 LD_SWITCH_X_SITE_AUX
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#else
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#define LD_SWITCH_SYSTEM LD_SWITCH_X_SITE_AUX
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#endif /* __mips__ */
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#endif /* __ELF__ */
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/* As of version 1.1.51, Linux did not actually implement SIGIO.
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But it works in newer versions. */
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/* Here we assume that signal.h is already included. */
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#ifdef emacs
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#ifdef LINUX_SIGIO_DOES_WORK
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#define INTERRUPT_INPUT
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#else
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#undef SIGIO
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/* Some versions of Linux define SIGURG and SIGPOLL as aliases for SIGIO.
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This prevents lossage in process.c. */
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#undef SIGURG
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#undef SIGPOLL
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#endif
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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 HAVE_WAIT_HEADER
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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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/* Best not to include -lg, unless it is last on the command line */
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#define LIBS_DEBUG
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#ifndef __ELF__
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#define LIB_STANDARD -lc /* avoid -lPW */
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#else
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#undef LIB_GCC
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#define LIB_GCC
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#define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtn.o
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#endif
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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_SYSTEM -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_SYSTEM
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#define C_SWITCH_SYSTEM -D_BSD_SOURCE
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#endif
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/* Paul Abrahams <abrahams@equinox.shaysnet.com> says this is needed. */
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#define LIB_MOTIF -lXm -lXpm
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#ifdef HAVE_LIBNCURSES
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#define TERMINFO
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#define LIBS_TERMCAP -lncurses
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#endif
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#define HAVE_SYSVIPC
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#ifdef __ELF__
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#define UNEXEC unexelf.o
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#ifndef LINUX_MAP_SHARED_DOES_WORK
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#define UNEXEC_USE_MAP_PRIVATE
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#endif
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#endif
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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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#endif /* 0 */
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/* This is to work around mysterious gcc failures in some system versions.
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It is unlikely that Emacs changes will work around this problem;
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therefore, this should remain permanently. */
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#ifndef HAVE_XRMSETDATABASE
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#define HAVE_XRMSETDATABASE
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#endif
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/* The regex.o routines are a part of the GNU C-library used with Linux. */
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/* However, sometimes they disagree with the src/regex.h that comes with Emacs,
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and that can make trouble in etags.c because it gets the regex.h from Emacs
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and the function definitions in libc. So turn this off. */
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/* #define REGEXP_IN_LIBC */
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/* Use BSD process groups, but use setpgid() instead of setpgrp() to
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actually set a process group. */
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#define BSD_PGRPS
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#define setpgrp(pid,pgid) setpgid(pid,pgid)
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/* Use mmap directly for allocating larger buffers. */
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#ifdef DOUG_LEA_MALLOC
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#undef REL_ALLOC
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#endif
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