src/s/usg5-4.h

   1 /* Definitions file for GNU Emacs running on AT&T's System V Release 4
   2    Copyright (C) 1987, 1990, 1999, 2000 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Emacs.
   5
   6 GNU Emacs is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Emacs is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Emacs; see the file COPYING.  If not, write to
  18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21 /* This file written by James Van Artsdalen of Dell Computer Corporation.
  22  * james@bigtex.cactus.org.  Subsequently improved for Dell 2.2 by Eric
  23  * S. Raymond <esr@snark.thyrsus.com>.
  24  */
  25
  26 /* Use the SysVr3 file for at least base configuration. */
  27
  28 #include "usg5-3.h"
  29
  30 #define USG5_4
  31
  32 /* We do have multiple jobs.  Handle ^Z. */
  33
  34 #undef NOMULTIPLEJOBS
  35
  36 /* Motif needs -lgen.  */
  37 #define LIBS_SYSTEM -lsocket -lnsl -lelf -lgen
  38 #define ORDINARY_LINK
  39
  40 #if 0
  41 #ifdef ORDINARY_LINK
  42 #define LIB_STANDARD -lc /usr/ucblib/libucb.a
  43 #else
  44 #define START_FILES pre-crt0.o /usr/ccs/lib/crt1.o /usr/ccs/lib/crti.o /usr/ccs/lib/values-Xt.o
  45 #define LIB_STANDARD -lc /usr/ucblib/libucb.a /usr/ccs/lib/crtn.o
  46 #endif
  47 #else
  48
  49 #ifdef ORDINARY_LINK
  50 #define LIB_STANDARD
  51 #else
  52 #define START_FILES pre-crt0.o /usr/ccs/lib/crt1.o /usr/ccs/lib/crti.o /usr/ccs/lib/values-Xt.o
  53 #define LIB_STANDARD -lc /usr/ccs/lib/crtn.o
  54 #endif
  55 #endif
  56
  57 /* there are no -lg libraries on this system, and no libPW */
  58
  59 #define LIBS_DEBUG
  60
  61 /* Undump with ELF */
  62
  63 #undef COFF
  64
  65 #define UNEXEC unexelf.o
  66
  67 /* <sys/stat.h> *defines* stat(2) as a static function.  If "static"
  68  * is blank, then many files will have a public definition for stat(2).
  69  */
  70
  71 #undef static
  72
  73 /* Get FIONREAD from <sys/filio.h>.  Get <sys/ttold.h> to get struct
  74  * tchars. But get <termio.h> first to make sure ttold.h doesn't
  75  * interfere.  And don't try to use SIGIO yet.
  76  */
  77
  78 #ifndef NOT_C_CODE
  79 #include <sys/wait.h>
  80 #endif
  81
  82 #ifdef emacs
  83 #ifndef NO_FILIO_H
  84 #include <sys/filio.h>
  85 #endif
  86 #include <termio.h>
  87 #include <sys/ttold.h>
  88 #include <signal.h>
  89 #include <sys/stream.h>
  90 #include <sys/stropts.h>
  91 #include <sys/termios.h>
  92 #define BROKEN_SIGIO
  93 #endif
  94
  95 /* Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
  96  * instead, there's a system variable _sys_nsig.  Unfortunately, we need the
  97  * constant to dimension an array.  So wire in the appropriate value here.
  98  */
  99 #define NSIG_MINIMUM 32
 100
 101 /* We need bss_end from emacs.c for undumping */
 102
 103 #ifndef USG_SHARED_LIBRARIES
 104 #define USG_SHARED_LIBRARIES
 105 #endif
 106
 107 /* We can support this */
 108
 109 #define CLASH_DETECTION
 110
 111 #define HAVE_PTYS
 112 #define HAVE_TERMIOS
 113 #undef BROKEN_TIOCGWINSZ
 114 #undef BROKEN_TIOCGETC
 115
 116 /* It is possible to receive SIGCHLD when there are no children
 117    waiting, because a previous waitsys(2) cleaned up the carcass of child
 118    without clearing the SIGCHLD pending info.  So, use a non-blocking
 119    wait3 instead, which maps to waitpid(2) in SysVr4. */
 120
 121 #define HAVE_WAIT_HEADER
 122 #define WAITTYPE int
 123 #define wait3(status, options, rusage) \
 124   waitpid ((pid_t) -1, (status), (options))
 125 #define WRETCODE(w) (w >> 8)
 126
 127 /* TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
 128    subprocesses the usual way.  But TIOCSIGNAL does work for PTYs, and
 129    this is all we need.  */
 130
 131 #define TIOCSIGSEND TIOCSIGNAL
 132
 133 /* This change means that we don't loop through allocate_pty too many
 134    times in the (rare) event of a failure. */
 135
 136 #undef FIRST_PTY_LETTER
 137 #define FIRST_PTY_LETTER 'z'
 138
 139 /* This sets the name of the master side of the PTY. */
 140
 141 #define PTY_NAME_SPRINTF strcpy (pty_name, "/dev/ptmx");
 142
 143 /* This sets the name of the slave side of the PTY.  On SysVr4,
 144    grantpt(3) forks a subprocess, so keep sigchld_handler() from
 145    intercepting that death.  If any child but grantpt's should die
 146    within, it should be caught after sigrelse(2). */
 147
 148 #define PTY_TTY_NAME_SPRINTF                            \
 149   {                                                     \
 150     char *ptsname (), *ptyname;                         \
 151                                                         \
 152     sighold (SIGCLD);                                   \
 153     if (grantpt (fd) == -1)                             \
 154       { emacs_close (fd); return -1; }                  \
 155     sigrelse (SIGCLD);                                  \
 156     if (unlockpt (fd) == -1)                            \
 157       { emacs_close (fd); return -1; }                  \
 158     if (!(ptyname = ptsname (fd)))                      \
 159       { emacs_close (fd); return -1; }                  \
 160     strncpy (pty_name, ptyname, sizeof (pty_name));     \
 161     pty_name[sizeof (pty_name) - 1] = 0;                \
 162   }
 163
 164 /* Push various streams modules onto a PTY channel. */
 165
 166 #define SETUP_SLAVE_PTY \
 167   if (ioctl (xforkin, I_PUSH, "ptem") == -1)    \
 168     fatal ("ioctl I_PUSH ptem", errno);         \
 169   if (ioctl (xforkin, I_PUSH, "ldterm") == -1)  \
 170     fatal ("ioctl I_PUSH ldterm", errno);       \
 171   if (ioctl (xforkin, I_PUSH, "ttcompat") == -1) \
 172     fatal ("ioctl I_PUSH ttcompat", errno);
 173
 174 /* Undo the SVr3 X11 library definition */
 175 #undef LIB_X11_LIB
 176
 177 /* The definition of this in s-usg5-3.h is not needed in 5.4.  */
 178 /* liblnsl_s should never be used.  The _s suffix implies a shared
 179    library, as opposed to a DLL.  Share libraries were used in SVR3, and are
 180    available only in order to allow SVR3 binaries to run.  They should not be
 181    linked in to new binaries. -- caraway!pinkas@caraway.intel.com.  */
 182 #undef LIBX10_SYSTEM
 183 #undef LIBX11_SYSTEM
 184
 185 /* Tell x11term.c and keyboard.c we have the system V streams feature.  */
 186 #define SYSV_STREAMS
 187
 188 /* This definition was suggested for next release.
 189    So give it a try.  */
 190 #define HAVE_SOCKETS
 191
 192 /* Markus Weiand <weiand@khof.com> says this is needed for Motif on
 193    SINIX.  */
 194 #undef LIBS_SYSTEM
 195 #define LIBS_SYSTEM -lgen