X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/f3bbbd11451643c49997116d639612ae434dcaa0..c43fb4c32df6393a3e001151693b8ce28f860976:/src/s/gnu-linux.h
diff --git a/src/s/gnu-linux.h b/src/s/gnu-linux.h
index 55d9a72529..b4031bb1ca 100644
--- a/src/s/gnu-linux.h
+++ b/src/s/gnu-linux.h
@@ -1,13 +1,16 @@
/* This file is the configuration file for Linux-based GNU systems
- Copyright (C) 1985, 1986, 1992, 1994, 1996, 1999, 2002, 2003, 2004,
- 2005, 2006 Free Software Foundation, Inc.
+
+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
@@ -15,57 +18,18 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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., 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA. */
-
-/* This file was put together by Michael K. Johnson and Rik Faith. */
+along with GNU Emacs. If not, see . */
-
-/*
- * Define symbols to identify the version of Unix this is.
- * Define all the symbols that apply correctly.
- */
-
-/* #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_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
-
-#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++)
+/* 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
@@ -76,7 +40,6 @@ Boston, MA 02110-1301, USA. */
/* 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; \
@@ -89,8 +52,7 @@ Boston, MA 02110-1301, USA. */
close (fd); \
return -1; \
} \
- strncpy (pty_name, ptyname, sizeof (pty_name)); \
- pty_name[sizeof (pty_name) - 1] = 0; \
+ snprintf (pty_name, sizeof pty_name, "%s", ptyname); \
sigunblock (sigmask (SIGCHLD)); \
}
@@ -98,65 +60,15 @@ Boston, MA 02110-1301, USA. */
/* Letter to use in finding device name of first pty,
if system supports pty's. 'p' means it is /dev/ptyp0 */
-
#define FIRST_PTY_LETTER 'p'
-#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. */
+#endif /* not HAVE_GRANTPT */
+/* Define HAVE_PTYS if the system supports pty devices. */
#define HAVE_PTYS
#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. */
-
-/* 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
- 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
@@ -164,167 +76,7 @@ Boston, MA 02110-1301, USA. */
your system and must be used only through an encapsulation
(Which you should place, by convention, in sysdep.c). */
-/* 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 /* 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__
-/* 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. */
-
-#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
-#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 */
-#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
-
-/* 21 Jun 06: Eric Hanchrow says this works. */
-#ifdef LINUX_SIGNALS_VIA_CHARACTERS_DOES_WORK
-#define SIGNALS_VIA_CHARACTERS
-#endif
-
-/* Rob Malouf 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 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
-
-#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;
@@ -333,27 +85,10 @@ Boston, MA 02110-1301, USA. */
#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 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. */
+ 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
@@ -361,16 +96,11 @@ Boston, MA 02110-1301, USA. */
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 __ia64__ || defined __sh__
#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 { \
@@ -380,7 +110,12 @@ Boston, MA 02110-1301, USA. */
__builtin_ia64_bsp ()); \
} while (0)
#endif
+#else
+#define GC_MARK_STACK GC_USE_GCPROS_AS_BEFORE
#endif
-/* arch-tag: 6244ea2a-abd0-44ec-abec-ff3dcc9afea9
- (do not change this comment) */
+#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