X-Git-Url: https://git.hcoop.net/bpt/emacs.git/blobdiff_plain/b7c0f208a35f6edfdad7bf312ab4ba2b3bc78d1f..a3fc8840a3c1586b17c9d211e959571fba365af6:/src/s/gnu-linux.h diff --git a/src/s/gnu-linux.h b/src/s/gnu-linux.h index c30ae7c4ff..3113565d36 100644 --- a/src/s/gnu-linux.h +++ b/src/s/gnu-linux.h @@ -1,5 +1,5 @@ -/* 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. @@ -15,7 +15,8 @@ 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, 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. */ @@ -28,37 +29,30 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ /* #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 disadvantages - 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 + +#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 */ @@ -72,19 +66,6 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ #define HAVE_TERMIOS -/* - * Define HAVE_TIMEVAL if the system supports the BSD style clock values. - * Look in 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. */ @@ -112,9 +93,9 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ The alternative is that a lock file named /usr/spool/mail/$USER.lock. */ -/* Both are used in Linux by different mail programs. I assume that most - people are using newer mailers that have heard of flock. Change this - if you need to. */ +/* On GNU/Linux systems, both methods are used by various mail + programs. I assume that most people are using newer mailers that + have heard of flock. Change this if you need to. */ #define MAIL_USE_FLOCK @@ -122,7 +103,7 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ so that Emacs can tell instantly when you try to modify a file that someone else has modified in his Emacs. */ -/* #define CLASH_DETECTION */ +#define CLASH_DETECTION /* Here, on a separate page, add any special hacks needed to make Emacs work on this system. For example, @@ -153,62 +134,87 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ /* #define LINUX_LDAV_FILE "/proc/loadavg" */ -/* This is needed for disknew.c:update_frame() */ +/* This is needed for dispnew.c:update_frame */ -#define PENDING_OUTPUT_COUNT(FILE) ((FILE)->_pptr - (FILE)->_pbase) - -/* Linux has crt0.o in a non-standard place */ +#ifdef emacs +#include /* Get the definition of _IO_STDIO_H. */ +#if defined(_IO_STDIO_H) || defined(_STDIO_USES_IOSTREAM) +/* new C libio names */ +#define GNU_LIBRARY_PENDING_OUTPUT_COUNT(FILE) \ + ((FILE)->_IO_write_ptr - (FILE)->_IO_write_base) +#else /* !_IO_STDIO_H */ +/* old C++ iostream names */ +#define GNU_LIBRARY_PENDING_OUTPUT_COUNT(FILE) \ + ((FILE)->_pptr - (FILE)->_pbase) +#endif /* !_IO_STDIO_H */ +#endif /* emacs */ + +/* Ask GCC where to find libgcc.a. */ +#define LIB_GCC `$(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 -/* 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 +#ifdef LINUX_SIGIO_DOES_WORK +#define INTERRUPT_INPUT +#else #undef SIGIO -#undef signal -#define signal sys_signal -#include +/* 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 */ -#if 0 /* autoconf should take care of this. */ -#define HAVE_RANDOM /* is builtin */ -#endif -#define HAVE_GETPAGESIZE #define HAVE_VFORK #define HAVE_SYS_SIGLIST #define HAVE_GETWD /* cure conflict with getcwd? */ +#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 */ -#define C_OPTIMIZE_SWITCH /* configure can guess this just fine */ -#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 -/* Work around a bug in glibc with _longjmp. */ -#define C_SWITCH_SYSTEM -D_BSD_SOURCE +/* 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 says it doesn't work well. */ @@ -217,5 +223,82 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ /* 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. */ -#define LIBS_MACHINE -lipc + +#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 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))