-/* 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, 2001-2012
+ Free Software Foundation, Inc.
+
+This file was put together by Michael K. Johnson and Rik Faith.
This file is part of GNU Emacs.
-GNU Emacs is free software; you can redistribute it and/or modify
+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 2, or (at your option)
-any later version.
+the Free Software Foundation, either version 3 of the License, 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
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, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
-
-/* This file was put together by Michael K. Johnson and Rik Faith. */
-
-
-/*
- * Define symbols to identify the version of Unix this is.
- * Define all the symbols that apply correctly.
- */
+along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
-/* #define UNIPLUS */
-/* #define USG5 */
+/* Define symbols to identify the version of Unix this is.
+ Define all the symbols that apply correctly. */
#define USG
-/* #define BSD */
-#define 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. */
-
-/* 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 */
-#endif /* HAVE_LINUX_VERSION_H */
-#endif /* emacs */
-#endif /* NOT_C_CODE */
+#define GNU_LINUX
+
+#if defined HAVE_GRANTPT
+#define UNIX98_PTYS
+
+/* Run only once. We need a `for'-loop because the code uses `continue'. */
+#define PTY_ITERATION int i; 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; \
+ } \
+ snprintf (pty_name, sizeof pty_name, "%s", ptyname); \
+ 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.
- */
-
-#define HAVE_TERMIOS
-
-/*
- * Define HAVE_PTYS if the system supports pty devices.
- */
+#endif /* not HAVE_GRANTPT */
+/* 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. */
-
-#define 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
-
-/* 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. */
-
-/* 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. */
-
-#define 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. */
-
-#define CLASH_DETECTION
-
/* Here, on a separate page, add any special hacks needed
to make Emacs work on this system. For example,
you might define certain system call names that don't
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 dispnew.c:update_frame */
-
-#ifdef emacs
-#include <stdio.h> /* Get the definition of _IO_STDIO_H. */
-#if defined(_IO_STDIO_H) || defined(_STDIO_USES_IOSTREAM)
-/* new C libio names */
-#define GNU_LIBRARY_PENDING_OUTPUT_COUNT(FILE) \
- ((FILE)->_IO_write_ptr - (FILE)->_IO_write_base)
-#else /* !_IO_STDIO_H */
-/* old C++ iostream names */
-#define GNU_LIBRARY_PENDING_OUTPUT_COUNT(FILE) \
- ((FILE)->_pptr - (FILE)->_pbase)
-#endif /* !_IO_STDIO_H */
-#endif /* emacs */
-
-/* Ask GCC where to find libgcc.a. */
-#define LIB_GCC `$(CC) $(C_SWITCH_X_SITE) -print-libgcc-file-name`
-
-#ifndef __ELF__
-/* Linux 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 emacs
-#ifdef LINUX_SIGIO_DOES_WORK
-#define INTERRUPT_INPUT
-#else
-#undef SIGIO
-/* Some versions of Linux define SIGURG and SIGPOLL as aliases for SIGIO.
- This prevents lossage in process.c. */
-#undef SIGURG
-#undef 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 SYSV_SYSTEM_DIR /* use dirent.h */
-
#define POSIX /* affects getpagesize.h and systty.h */
-#define POSIX_SIGNALS
-
-/* Best not to include -lg, unless it is last on the command line */
-#define LIBS_DEBUG
-#ifndef __ELF__
-#define LIB_STANDARD -lc /* avoid -lPW */
-#else
-#undef LIB_GCC
-#define LIB_GCC
-#define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtn.o
-#endif
-
-/* Don't use -g in test compiles in configure.
- This is so we will use the same shared libs for that linking
- that are used when linking temacs. */
-#ifdef THIS_IS_CONFIGURE
-#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 */
-
-/* Rob Malouf <malouf@csli.stanford.edu> says:
- SYSV IPC is standard a standard part of Linux since version 0.99pl10,
- and is a very common addition to previous versions. */
-
-#ifdef TERM
-#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_SYSTEM
-#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_NCURSES
-#define TERMINFO
-#endif
-
-#define HAVE_SYSVIPC
-
-#ifdef __ELF__
-#define UNEXEC unexelf.o
-#define UNEXEC_USE_MAP_PRIVATE
-#endif
-
-#ifdef LINUX_QMAGIC
-
-#define HAVE_TEXT_START
-#define UNEXEC unexsunos4.o
-#define N_PAGSIZ(x) PAGE_SIZE
-
-#else /* not LINUX_QMAGIC */
-
-#define A_TEXT_OFFSET(hdr) (N_MAGIC(hdr) == QMAGIC ? sizeof (struct exec) : 0)
-#define A_TEXT_SEEK(hdr) (N_TXTOFF(hdr) + A_TEXT_OFFSET(hdr))
-#define ADJUST_EXEC_HEADER \
- unexec_text_start = N_TXTADDR(ohdr) + A_TEXT_OFFSET(ohdr)
-
-#endif /* not LINUX_QMAGIC */
-
-#if 0
-/* In 19.23 and 19.24, configure sometimes fails to define these.
- It has to do with the fact that configure uses CFLAGS when linking
- while Makefile.in.in (erroneously) fails to do so when linking temacs. */
-#ifndef HAVE_GETTIMEOFDAY
-#define HAVE_GETTIMEOFDAY
-#endif
-#ifndef HAVE_MKDIR
-#define HAVE_MKDIR
-#endif
-#ifndef HAVE_RMDIR
-#define HAVE_RMDIR
-#endif
-#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;
#define HAVE_XRMSETDATABASE
#endif
-/* The regex.o routines are a part of the GNU C-library used with Linux. */
-/* 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 NARROWPROTO 1
+
+/* 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__ || defined __sh__
+#define GC_SETJMP_WORKS 1
+#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 ()); \
+ } while (0)
+#endif
+#else
+#define GC_MARK_STACK GC_USE_GCPROS_AS_BEFORE
+#endif
-#define BSD_PGRPS
-#define setpgrp(pid,pgid) setpgid((pid),(pgid))
+#ifdef __i386__
+/* 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)
+#endif