-/* This file is the configuration file for the Linux operating system.
- Copyright (C) 1985, 1986, 1992 Free Software Foundation, Inc.
+/* This file is the configuration file for Linux-based GNU systems
+ Copyright (C) 1985, 1986, 1992, 1994, 1996 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
/* 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 disadvatages
- 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 */
/* Letter to use in finding device name of first pty,
if system supports pty's. 'p' means it is /dev/ptyp0 */
#define HAVE_TERMIOS
-/*
- * Define HAVE_TIMEVAL if the system supports the BSD style clock values.
- * Look in <sys/time.h> for a timeval structure.
- */
-
-#define HAVE_TIMEVAL
-
-/*
- * Define HAVE_SELECT if the system supports the `select' system call.
- */
-
-#define HAVE_SELECT
-
/*
* Define HAVE_PTYS if the system supports pty devices.
*/
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
so that Emacs can tell instantly when you try to modify
a file that someone else has modified in his Emacs. */
-/* #define CLASH_DETECTION */
+#define CLASH_DETECTION
/* Here, on a separate page, add any special hacks needed
to make Emacs work on this system. For example,
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
/* #define LINUX_LDAV_FILE "/proc/loadavg" */
-/* This is needed for disknew.c:update_frame() */
-
-#define PENDING_OUTPUT_COUNT(FILE) ((FILE)->_pptr - (FILE)->_pbase)
+/* This is needed for dispnew.c:update_frame */
-/* Linux has crt0.o in a non-standard place */
+#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__
+/* 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
-/* Linux has SIGIO defined, but not implemented, as of version 0.99.8
- * What an ugly kludge! This will not be necessary if the
- * INTERRUPT_INPUT define gets fully implemented.
- */
+#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__ */
+#endif /* __ELF__ */
+
+/* As of version 1.1.51, Linux did not actually implement SIGIO.
+ But it works in newer versions. */
+/* Here we assume that signal.h is already included. */
#ifdef emacs
-#include <signal.h>
+#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
-
-#define HAVE_SETSID
/* This is needed for sysdep.c */
-#define HAVE_UNISTD_H /* for getpagesize.h */
#define NO_SIOCTL_H /* don't have sioctl.h */
-#define HAVE_RANDOM /* is builtin */
-#define HAVE_CLOSEDIR
-#define HAVE_GETPAGESIZE
#define HAVE_VFORK
#define HAVE_SYS_SIGLIST
#define HAVE_GETWD /* cure conflict with getcwd? */
-#define HAVE_TCATTR /* faith@cs.unc.edu says this is needed. */
+#define HAVE_WAIT_HEADER
-#define USE_UTIME /* don't have utimes */
#define SYSV_SYSTEM_DIR /* use dirent.h */
-#define USG_SYS_TIME /* use sys/time.h, not time.h */
-#define POSIX /* affects only getpagesize.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)
-
/* 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 */
-#ifdef HAVE_X11
-#define LD_SWITCH_SYSTEM -L/usr/X386/lib
+#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. */
-#define SIGNALS_VIA_CHARACTERS
+/* 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_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;
+ therefore, this should remain permanently. */
+#ifndef HAVE_XRMSETDATABASE
+#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 setpgrp(pid,pgid) setpgid((pid),(pgid))
HCoop / bpt / emacs.git / blobdiff