-/* This file is the configuration file for Lignux systems
- (that is, Linux-based GNU operating systems.)
- Copyright (C) 1985, 1986, 1992, 1994, 1996 Free Software Foundation, Inc.
+/* This file is the configuration file for Linux-based GNU systems
+ Copyright (C) 1985, 1986, 1992, 1994, 1996, 1999, 2001, 2002, 2003, 2004,
+ 2005, 2006, 2007 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, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, 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 "lignux" /* All the best software is free. */
+#define SYSTEM_TYPE "gnu/linux" /* All the best software is free. */
/* Check the version number of Linux--if it is at least 1.2.0,
it is safe to use SIGIO. */
#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 */
+#if LINUX_VERSION_CODE >= 0x20400
+#define LINUX_SIGNALS_VIA_CHARACTERS_DOES_WORK
+#endif /* LINUX_VERSION_CODE >= 0x20400 */
#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. */
+/* Debian contains a patch which says: ``On Debian/GNU/Linux systems,
+ configure gets the right answers, and that means *NOT* using flock.
+ Using flock is guaranteed to be the wrong thing. See Debian Policy
+ for details.'' and then uses `#ifdef DEBIAN'. Unfortunately the
+ Debian maintainer hasn't provided a clean fix for Emacs.
+ movemail.c will use `maillock' when MAILDIR, HAVE_LIBMAIL and
+ HAVE_MAILLOCK_H are defined, so the following appears to be the
+ correct logic. -- fx */
+/* We must check for HAVE_LIBLOCKFILE too, as movemail does.
+ liblockfile is a Free Software replacement for libmail, used on
+ Debian systems and elsewhere. -rfr */
+
+#if !((defined (HAVE_LIBMAIL) || defined (HAVE_LIBLOCKFILE)) && \
+ defined (HAVE_MAILLOCK_H))
#define MAIL_USE_FLOCK
+#endif
/* Define CLASH_DETECTION if you want lock files to be written
so that Emacs can tell instantly when you try to modify
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 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
#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. */
-#ifndef __GNUC__
+
+#ifdef __mips__
+#define LD_SWITCH_SYSTEM -G 0 LD_SWITCH_X_SITE_AUX
+#else
#define LD_SWITCH_SYSTEM LD_SWITCH_X_SITE_AUX
-#else /* GCC */
-/* We use ./prefix-args because we don't know whether LD_SWITCH_X_SITE_AUX
- has anything in it. It can be empty.
- This works ok in src. Luckily lib-src does not use LD_SWITCH_SYSTEM. */
-#define LD_SWITCH_SYSTEM `./prefix-args -Xlinker LD_SWITCH_X_SITE_AUX`
-#endif /* GCC */
+#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 does not actually implement SIGIO. */
-/* Here we assume that signal.h is already included. */
+/* As of version 1.1.51, Linux did not actually implement SIGIO.
+ But it works in newer versions. */
#ifdef emacs
#ifdef LINUX_SIGIO_DOES_WORK
#define INTERRUPT_INPUT
#else
-#undef SIGIO
+#define BROKEN_SIGIO
/* Some versions of Linux define SIGURG and SIGPOLL as aliases for SIGIO.
This prevents lossage in process.c. */
-#undef SIGURG
-#undef SIGPOLL
+#define BROKEN_SIGURG
+#define BROKEN_SIGPOLL
#endif
#endif
#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 C_DEBUG_SWITCH
#endif
-/* Let's try this out, just in case.
- Nah. Rik Faith <faith@cs.unc.edu> says it doesn't work well. */
-/* #define SIGNALS_VIA_CHARACTERS */
+/* 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works. */
+#ifdef LINUX_SIGNALS_VIA_CHARACTERS_DOES_WORK
+#define SIGNALS_VIA_CHARACTERS
+#endif
/* Rob Malouf <malouf@csli.stanford.edu> says:
SYSV IPC is standard a standard part of Linux since version 0.99pl10,
/* alane@wozzle.linet.org says that -lipc is not a separate library,
since libc-4.4.1. So -lipc was deleted. */
#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
#ifdef __ELF__
#define UNEXEC unexelf.o
+#ifndef LINUX_MAP_SHARED_DOES_WORK
#define UNEXEC_USE_MAP_PRIVATE
#endif
+#endif
#ifdef LINUX_QMAGIC
actually set a process group. */
#define BSD_PGRPS
-#define setpgrp(pid,pgid) setpgid((pid),(pgid))
+
+#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__ || defined __amd64__ \
+ || defined __ia64__
+#define GC_SETJMP_WORKS 1
+#define GC_MARK_STACK GC_MAKE_GCPROS_NOOPS
+#ifdef __mc68000__
+#define GC_LISP_OBJECT_ALIGNMENT 2
+#endif
+#ifdef __ia64__
+#define GC_MARK_SECONDARY_STACK() \
+ do { \
+ extern void *__libc_ia64_register_backing_store_base; \
+ __builtin_ia64_flushrs (); \
+ mark_memory (__libc_ia64_register_backing_store_base, \
+ __builtin_ia64_bsp (), 0); \
+ } while (0)
+#endif
+#endif
+
+/* arch-tag: 6244ea2a-abd0-44ec-abec-ff3dcc9afea9
+ (do not change this comment) */