/* This file is the configuration file for Linux-based GNU systems
- Copyright (C) 1985, 86, 92, 94, 96, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1985, 1986, 1992, 1994, 1996, 1999, 2001, 2002, 2003, 2004,
+ 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
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. */
+along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
/* This file was put together by Michael K. Johnson and Rik Faith. */
* Define all the symbols that apply correctly.
*/
-/* #define UNIPLUS */
-/* #define USG5 */
#define USG
-/* #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 "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. */
#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 */
+#if LINUX_VERSION_CODE >= 0x20400
+/* 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works. */
+#define SIGNALS_VIA_CHARACTERS
+#endif /* LINUX_VERSION_CODE >= 0x20400 */
#endif /* HAVE_LINUX_VERSION_H */
#endif /* emacs */
#endif /* NOT_C_CODE */
#define FIRST_PTY_LETTER 'p'
-#endif /* not HAVE_GRANDPT */
+#endif /* not HAVE_GRANTPT */
/* Define HAVE_TERMIOS if the system provides POSIX-style
functions and macros for terminal control. */
/* 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
-/* 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
/* Ask GCC where to find libgcc.a. */
#define LIB_GCC `$(CC) $(C_SWITCH_X_SITE) -print-libgcc-file-name`
-#ifndef __ELF__
-/* 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
-#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. */
#else
#define LD_SWITCH_SYSTEM LD_SWITCH_X_SITE_AUX
#endif /* __mips__ */
-#endif /* __ELF__ */
-/* As of version 1.1.51, Linux did not actually implement SIGIO.
- But it works in newer versions. */
+/* 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
+
#ifdef emacs
-#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_WAIT_HEADER
-
#define SYSV_SYSTEM_DIR /* use dirent.h */
#define POSIX /* affects getpagesize.h and systty.h */
/* 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
#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
+/* _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
#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
-
-#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. */
/* Tell that garbage collector that setjmp is known to save all
registers relevant for conservative garbage collection in the
jmp_buf. */
-/* m68k and alpha aren't tested, but there are Debian packages for SCM
- and/or Guile on them, so the technique must work. */
-
+/* 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 __m68k__ || defined __alpha__
+#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) */