src/s/usg5-4.h

   1 /* Definitions file for GNU Emacs running on AT&T's System V Release 4
   2    Copyright (C) 1987 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Emacs.
   5
   6 GNU Emacs is distributed in the hope that it will be useful,
   7 but WITHOUT ANY WARRANTY.  No author or distributor
   8 accepts responsibility to anyone for the consequences of using it
   9 or for whether it serves any particular purpose or works at all,
  10 unless he says so in writing.  Refer to the GNU Emacs General Public
  11 License for full details.
  12
  13 Everyone is granted permission to copy, modify and redistribute
  14 GNU Emacs, but only under the conditions described in the
  15 GNU Emacs General Public License.   A copy of this license is
  16 supposed to have been given to you along with GNU Emacs so you
  17 can know your rights and responsibilities.  It should be in a
  18 file named COPYING.  Among other things, the copyright notice
  19 and this notice must be preserved on all copies.  */
  20
  21 /* This file written by James Van Artsdalen of Dell Computer Corporation.
  22  * james@bigtex.cactus.org.
  23  */
  24
  25 /* Use the SysVr3 file for at least base configuration. */
  26
  27 #include "usg5-3.h"
  28
  29 #define USG5_4
  30
  31 /* We do have multiple jobs.  Handle ^Z. */
  32
  33 #undef NOMULTIPLEJOBS
  34
  35 /* If compiled by GNU C, we must have gnulib */
  36
  37 #ifdef __GNUC__
  38 #define GNULIB /usr/local/lib/gcc-gnulib
  39 #define LIBS_DEBUG
  40 #else
  41 #define GNULIB
  42 #endif
  43
  44 #define START_FILES pre-crt0.o /usr/ccs/lib/crt1.o /usr/ccs/lib/crti.o /usr/ccs/lib/values-Xt.o
  45
  46 #define LIB_STANDARD GNULIB -lsocket -lnsl -lelf -lc /usr/ucblib/libucb.a /usr/ccs/lib/crtn.o
  47
  48 #define DATA_SEG_BITS 0x08000000
  49
  50 /* Use ptem.h to get structures related to windows.  */
  51
  52 #define NEED_PTEM_H
  53
  54 /* Undump with ELF */
  55
  56 #undef COFF
  57
  58 #define UNEXEC unexelf.o
  59
  60 /* Get FIONREAD from <sys/filio.h>.  Get <sys/ttold.h> to get struct
  61  * tchars. But get <termio.h> first to make sure ttold.h doesn't
  62  * interfere.  And don't try to use SIGIO yet.
  63  */
  64
  65 #ifdef emacs
  66 #include <sys/filio.h>
  67 #include <termio.h>
  68 #include <sys/ttold.h>
  69 #include <signal.h>
  70 #undef SIGIO
  71 #endif
  72
  73 /* libc has this stuff, but not utimes. */
  74
  75 #define HAVE_RENAME
  76 #define HAVE_SELECT
  77 #define HAVE_TIMEVAL
  78 #define HAVE_CLOSEDIR
  79 #define HAVE_GETTIMEOFDAY
  80 #define HAVE_DUP2
  81
  82 #define USE_UTIME
  83
  84 /* <sys/stat.h> *defines* stat(2) as a static function.  If "static"
  85  * is blank, then many files will have a public definition for stat(2).
  86  */
  87
  88 #undef static
  89
  90 /* We need bss_end from emacs.c for undumping */
  91
  92 #ifndef USG_SHARED_LIBRARIES
  93 #define USG_SHARED_LIBRARIES
  94 #endif
  95
  96 /* We can support this */
  97
  98 #define CLASH_DETECTION
  99
 100 #define HAVE_PTYS
 101 #define HAVE_SETSID
 102
 103 /* It is possible to receive SIGCHLD when there are no children
 104    waiting, because a previous waitsys(2) cleaned up the carcass of child
 105    without clearing the SIGCHLD pending info.  So, use a non-blocking
 106    wait3 instead, which maps to waitpid(2) in SysVr4. */
 107
 108 #define HAVE_WAIT_HEADER
 109 #define WAITTYPE int
 110 #define wait3(status, options, rusage) \
 111   waitpid((pid_t) -1, (status), (options))
 112 #define WRETCODE(w) (w >> 8)
 113
 114 /* TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
 115    subprocesses the usual way.  But TIOCSIGNAL does work for PTYs, and
 116    this is all we need.  */
 117
 118 #define TIOCSIGSEND TIOCSIGNAL
 119
 120 /* This change means that we don't loop through allocate_pty too many
 121    times in the (rare) event of a failure. */
 122
 123 #undef FIRST_PTY_LETTER
 124 #define FIRST_PTY_LETTER 'z'
 125
 126 /* This sets the name of the master side of the PTY. */
 127
 128 #define PTY_NAME_SPRINTF strcpy (pty_name, "/dev/ptmx");
 129
 130 /* This sets the name of the slave side of the PTY.  On SysVr4,
 131    grantpt(3) forks a subprocess, so keep sigchld_handler() from
 132    intercepting that death.  If any child but grantpt's should die
 133    within, it should be caught after sigrelse(2). */
 134
 135 #define PTY_TTY_NAME_SPRINTF                    \
 136   {                                             \
 137     char *ptsname(), *ptyname;                  \
 138                                                 \
 139     sighold(SIGCLD);                            \
 140     if (grantpt(fd) == -1)                      \
 141       fatal("could not grant slave pty");       \
 142     sigrelse(SIGCLD);                           \
 143     if (unlockpt(fd) == -1)                     \
 144       fatal("could not unlock slave pty");      \
 145     if (!(ptyname = ptsname(fd)))               \
 146       fatal ("could not enable slave pty");     \
 147     strncpy(pty_name, ptyname, sizeof(pty_name)); \
 148     pty_name[sizeof(pty_name) - 1] = 0;         \
 149   }
 150
 151 /* Push various streams modules onto a PTY channel. */
 152
 153 #define SETUP_SLAVE_PTY \
 154   if (ioctl (xforkin, I_PUSH, "ptem") == -1)    \
 155     fatal ("ioctl I_PUSH ptem", errno);         \
 156   if (ioctl (xforkin, I_PUSH, "ldterm") == -1)  \
 157     fatal ("ioctl I_PUSH ldterm", errno);       \
 158   if (ioctl (xforkin, I_PUSH, "ttcompat") == -1) \
 159     fatal ("ioctl I_PUSH ttcompat", errno);
 160
 161 /* The definition of this in usg5-3.h is not needed in 5.4.  */
 162
 163 #undef LIBX11_SYSTEM