-/* This file is the configuration file for GNU/Linux operating systems.
- Copyright (C) 1985, 1986, 1992, 1994 Free Software Foundation, Inc.
+/* This file is the configuration file for Linux-based GNU systems
+ Copyright (C) 1985, 86, 92, 94, 96, 1999, 2002 Free Software Foundation, Inc.
This file is part of GNU Emacs.
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. */
/* This file was put together by Michael K. Johnson and Rik Faith. */
/* #define UNIPLUS */
/* #define USG5 */
#define USG
-/* #define BSD */
+/* #define BSD_SYSTEM */
#define LINUX
+#define GNU_LINUX
/* SYSTEM_TYPE should indicate the kind of system you are using.
It sets the Lisp variable system-type. */
-#define SYSTEM_TYPE "linux" /* All the best software is free. */
+#define SYSTEM_TYPE "gnu/linux" /* All the best software is free. */
-/* 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.
-*/
-
-/* There have been suggestions made to add SIGIO to Linux. If this
- is done, you may, at your discretion, uncomment the line below.
-*/
-
-/* #define INTERRUPT_INPUT */
+/* Check the version number of Linux--if it is at least 1.2.0,
+ it is safe to use SIGIO. */
+#ifndef NOT_C_CODE
+#ifdef emacs
+#ifdef HAVE_LINUX_VERSION_H
+#include <linux/version.h>
+
+#if LINUX_VERSION_CODE > 0x10200
+#define LINUX_SIGIO_DOES_WORK
+#endif /* LINUX_VERSION_CODE > 0x10200 */
+#if LINUX_VERSION_CODE >= 0x20000
+#define LINUX_MAP_SHARED_DOES_WORK
+#endif /* LINUX_VERSION_CODE >= 0x20000 */
+#endif /* HAVE_LINUX_VERSION_H */
+#endif /* emacs */
+#endif /* NOT_C_CODE */
+
+#if defined HAVE_GRANTPT
+#define UNIX98_PTYS
+
+/* Run only once. We need a `for'-loop because the code uses
+ `continue'. */
+
+#define PTY_ITERATION for (i = 0; i < 1; i++)
+
+#ifdef HAVE_GETPT
+#define PTY_NAME_SPRINTF
+#define PTY_OPEN fd = getpt ()
+#else /* not HAVE_GETPT */
+#define PTY_NAME_SPRINTF strcpy (pty_name, "/dev/ptmx");
+#endif /* not HAVE_GETPT */
+
+/* Note that grantpt and unlockpt may fork. We must block SIGCHLD to
+ prevent sigchld_handler from intercepting the child's death. */
+
+#define PTY_TTY_NAME_SPRINTF \
+ { \
+ char *ptyname; \
+ \
+ sigblock (sigmask (SIGCHLD)); \
+ if (grantpt (fd) == -1 || unlockpt (fd) == -1 \
+ || !(ptyname = ptsname(fd))) \
+ { \
+ sigunblock (sigmask (SIGCHLD)); \
+ close (fd); \
+ return -1; \
+ } \
+ strncpy (pty_name, ptyname, sizeof (pty_name)); \
+ pty_name[sizeof (pty_name) - 1] = 0; \
+ sigunblock (sigmask (SIGCHLD)); \
+ }
+
+#else /* not HAVE_GRANTPT */
/* Letter to use in finding device name of first pty,
- if system supports pty's. 'p' means it is /dev/ptyp0 */
+ if system supports pty's. 'p' means it is /dev/ptyp0 */
#define FIRST_PTY_LETTER 'p'
-/*
- * Define HAVE_TERMIOS if the system provides POSIX-style
- * functions and macros for terminal control.
- */
+#endif /* not HAVE_GRANDPT */
+
+/* Define HAVE_TERMIOS if the system provides POSIX-style
+ functions and macros for terminal control. */
#define HAVE_TERMIOS
-/*
- * Define HAVE_PTYS if the system supports pty devices.
- */
+/* Define HAVE_PTYS if the system supports pty devices. */
#define HAVE_PTYS
-/* Uncomment this later when other problems are dealt with -mkj */
-
#define HAVE_SOCKETS
/* Define this symbol if your system has the functions bcopy, etc. */
The alternative is that a lock file named
/usr/spool/mail/$USER.lock. */
-/* Both are used in Linux by different mail programs. I assume that most
- people are using newer mailers that have heard of flock. Change this
- if you need to. */
+/* On GNU/Linux systems, both methods are used by various mail
+ programs. I assume that most people are using newer mailers that
+ have heard of flock. Change this if you need to. */
#define MAIL_USE_FLOCK
your system and must be used only through an encapsulation
(Which you should place, by convention, in sysdep.c). */
\f
-/* On POSIX systems the system calls are interruptible by signals
- that the user program has elected to catch. Thus the system call
- must be retried in these cases. To handle this without massive
- changes in the source code, we remap the standard system call names
- to names for our own functions in sysdep.c that do the system call
- with retries. */
-
-#define read sys_read
-#define write sys_write
-#define open sys_open
-#define close sys_close
-
-#define INTERRUPTIBLE_OPEN
-#define INTERRUPTIBLE_CLOSE
-#define INTERRUPTIBLE_IO
-
/* If you mount the proc file system somewhere other than /proc
you will have to uncomment the following and make the proper
changes */
/* #define LINUX_LDAV_FILE "/proc/loadavg" */
-/* This is needed for disknew.c:update_frame */
+/* This is needed for dispnew.c:update_frame */
#ifdef emacs
#include <stdio.h> /* Get the definition of _IO_STDIO_H. */
#define LIB_GCC `$(CC) $(C_SWITCH_X_SITE) -print-libgcc-file-name`
#ifndef __ELF__
-/* Linux has crt0.o in a non-standard place */
+/* GNU/Linux usually has crt0.o in a non-standard place */
#define START_FILES pre-crt0.o /usr/lib/crt0.o
#else
#define START_FILES pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o
#endif
-/* As of version 1.1.51, Linux does not actually implement SIGIO. */
-/* Here we assume that signal.h is already included. */
+#ifdef __ELF__
+/* Here is how to find X Windows. LD_SWITCH_X_SITE_AUX gives an -R option
+ says where to find X windows at run time. */
+
+#ifdef __mips__
+#define LD_SWITCH_SYSTEM -G 0 LD_SWITCH_X_SITE_AUX
+#else
+#define LD_SWITCH_SYSTEM LD_SWITCH_X_SITE_AUX
+#endif /* __mips__ */
+
+/* Link temacs with -z nocombreloc so that unexec works right, whether or
+ not -z combreloc is the default. GNU ld ignores unknown -z KEYWORD
+ switches, so this also works with older versions that don't implement
+ -z combreloc. */
+#define LD_SWITCH_SYSTEM_TEMACS -z nocombreloc
+#endif /* __ELF__ */
+
+/* As of version 1.1.51, Linux did not actually implement SIGIO.
+ But it works in newer versions. */
#ifdef emacs
-#undef SIGIO
+#ifdef LINUX_SIGIO_DOES_WORK
+#define INTERRUPT_INPUT
+#else
+#define BROKEN_SIGIO
+/* Some versions of Linux define SIGURG and SIGPOLL as aliases for SIGIO.
+ This prevents lossage in process.c. */
+#define BROKEN_SIGURG
+#define BROKEN_SIGPOLL
+#endif
#endif
/* This is needed for sysdep.c */
#define NO_SIOCTL_H /* don't have sioctl.h */
-#define HAVE_VFORK
-#define HAVE_SYS_SIGLIST
-#define HAVE_GETWD /* cure conflict with getcwd? */
+#define HAVE_WAIT_HEADER
#define SYSV_SYSTEM_DIR /* use dirent.h */
#define POSIX /* affects getpagesize.h and systty.h */
#define POSIX_SIGNALS
-/* libc-linux/sysdeps/linux/i386/ulimit.c says that due to shared library, */
-/* we cannot get the maximum address for brk */
-#define ULIMIT_BREAK_VALUE (32*1024*1024)
-
-#define SEGMENT_MASK ((SEGMENT_SIZE)-1)
-
/* Best not to include -lg, unless it is last on the command line */
#define LIBS_DEBUG
-#define LIBS_TERMCAP -ltermcap -lcurses /* save some space with shared libs*/
#ifndef __ELF__
#define LIB_STANDARD -lc /* avoid -lPW */
#else
and is a very common addition to previous versions. */
#ifdef TERM
-#define LIBS_MACHINE -lclient
+#define LIBS_SYSTEM -lclient
#define C_SWITCH_SYSTEM -D_BSD_SOURCE -I/usr/src/term
#else
/* alane@wozzle.linet.org says that -lipc is not a separate library,
since libc-4.4.1. So -lipc was deleted. */
-#define LIBS_MACHINE
+#define LIBS_SYSTEM
+/* _BSD_SOURCE is redundant, at least in glibc2, since we define
+ _GNU_SOURCE. Left in in case it's relevant to libc5 systems and
+ anyone's still using Emacs on those. --fx 2002-12-14 */
#define C_SWITCH_SYSTEM -D_BSD_SOURCE
#endif
+/* Paul Abrahams <abrahams@equinox.shaysnet.com> says this is needed. */
+#define LIB_MOTIF -lXm -lXpm
+
+#ifdef HAVE_LIBNCURSES
+#define TERMINFO
+#define LIBS_TERMCAP -lncurses
+#endif
+
#define HAVE_SYSVIPC
#ifdef __ELF__
#define UNEXEC unexelf.o
+#ifndef LINUX_MAP_SHARED_DOES_WORK
#define UNEXEC_USE_MAP_PRIVATE
#endif
+#endif
#ifdef LINUX_QMAGIC
#ifndef HAVE_XSCREENNUMBEROFSCREEN
#define HAVE_XSCREENNUMBEROFSCREEN
#endif
+#endif /* 0 */
+
+/* This is to work around mysterious gcc failures in some system versions.
+ It is unlikely that Emacs changes will work around this problem;
+ therefore, this should remain permanently. */
#ifndef HAVE_XRMSETDATABASE
#define HAVE_XRMSETDATABASE
#endif
-#endif /* 0 */
/* The regex.o routines are a part of the GNU C-library used with Linux. */
-#define REGEXP_IN_LIBC
+/* However, sometimes they disagree with the src/regex.h that comes with Emacs,
+ and that can make trouble in etags.c because it gets the regex.h from Emacs
+ and the function definitions in libc. So turn this off. */
+/* #define REGEXP_IN_LIBC */
+
+/* Use BSD process groups, but use setpgid() instead of setpgrp() to
+ actually set a process group. */
+
+#define BSD_PGRPS
+
+#define NARROWPROTO 1
+
+/* Use mmap directly for allocating larger buffers. */
+#ifdef DOUG_LEA_MALLOC
+#undef REL_ALLOC
+#endif
+
+/* Tell that garbage collector that setjmp is known to save all
+ registers relevant for conservative garbage collection in the
+ jmp_buf. */
+/* Not all the architectures are tested, but there are Debian packages
+ for SCM and/or Guile on them, so the technique must work. See also
+ comments in alloc.c concerning setjmp and gcc. Fixme: it's
+ probably safe to make this conditional just on GCC, except for ia64
+ register window-flushing. */
+/* Don't use #cpu here since in newest development versions of GCC,
+ we must call cpp with -traditional, and that disables #cpu. */
+
+#if defined __i386__ || defined __sparc__ || defined __mc68000__ \
+ || defined __alpha__ || defined __mips__ || defined __s390__ \
+ || defined __arm__ || defined __powerpc__
+#define GC_SETJMP_WORKS 1
+#define GC_MARK_STACK GC_MAKE_GCPROS_NOOPS
+#ifdef __mc68000__
+#define GC_LISP_OBJECT_ALIGNMENT 2
+#endif
+#endif
HCoop / bpt / emacs.git / blobdiff