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, 2002, 2003, 2004,
   3                  2005, 2006 Free Software Foundation, Inc.
   4
   5 This file is part of GNU Emacs.
   6
   7 GNU Emacs is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GNU Emacs is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU Emacs; see the file COPYING.  If not, write to
  19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20 Boston, MA 02110-1301, USA.  */
  21
  22 /* This file written by James Van Artsdalen of Dell Computer Corporation.
  23  * james@bigtex.cactus.org.  Subsequently improved for Dell 2.2 by Eric
  24  * S. Raymond <esr@snark.thyrsus.com>.
  25  */
  26
  27 /* Use the SysVr3 file for at least base configuration. */
  28
  29 #include "usg5-3.h"
  30
  31 #define USG5_4
  32
  33 /* We do have multiple jobs.  Handle ^Z. */
  34
  35 #undef NOMULTIPLEJOBS
  36
  37 /* Motif needs -lgen.  */
  38 #define LIBS_SYSTEM -lsocket -lnsl -lelf -lgen
  39 #define ORDINARY_LINK
  40
  41 #if 0
  42 #ifdef ORDINARY_LINK
  43 #define LIB_STANDARD -lc /usr/ucblib/libucb.a
  44 #else
  45 #define START_FILES pre-crt0.o /usr/ccs/lib/crt1.o /usr/ccs/lib/crti.o /usr/ccs/lib/values-Xt.o
  46 #define LIB_STANDARD -lc /usr/ucblib/libucb.a /usr/ccs/lib/crtn.o
  47 #endif
  48 #else
  49
  50 #ifdef ORDINARY_LINK
  51 #define LIB_STANDARD
  52 #else
  53 #define START_FILES pre-crt0.o /usr/ccs/lib/crt1.o /usr/ccs/lib/crti.o /usr/ccs/lib/values-Xt.o
  54 #define LIB_STANDARD -lc /usr/ccs/lib/crtn.o
  55 #endif
  56 #endif
  57
  58 /* there are no -lg libraries on this system, and no libPW */
  59
  60 #define LIBS_DEBUG
  61
  62 /* Undump with ELF */
  63
  64 #undef COFF
  65
  66 #define UNEXEC unexelf.o
  67
  68 /* <sys/stat.h> *defines* stat(2) as a static function.  If "static"
  69  * is blank, then many files will have a public definition for stat(2).
  70  */
  71
  72 #undef static
  73
  74 /* Get FIONREAD from <sys/filio.h>.  Get <sys/ttold.h> to get struct
  75  * tchars. But get <termio.h> first to make sure ttold.h doesn't
  76  * interfere.  And don't try to use SIGIO yet.
  77  */
  78
  79 #ifndef NOT_C_CODE
  80 #include <sys/wait.h>
  81 #endif
  82
  83 #ifdef emacs
  84 #ifndef NO_FILIO_H
  85 #include <sys/filio.h>
  86 #endif
  87 #include <termio.h>
  88 #include <sys/ttold.h>
  89 #include <signal.h>
  90 #include <sys/stream.h>
  91 #include <sys/stropts.h>
  92 #include <sys/termios.h>
  93 #define BROKEN_SIGIO
  94 #endif
  95
  96 /* Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
  97  * instead, there's a system variable _sys_nsig.  Unfortunately, we need the
  98  * constant to dimension an array.  So wire in the appropriate value here.
  99  */
 100 #define NSIG_MINIMUM 32
 101
 102 /* We need bss_end from emacs.c for undumping */
 103
 104 #ifndef USG_SHARED_LIBRARIES
 105 #define USG_SHARED_LIBRARIES
 106 #endif
 107
 108 /* We can support this */
 109
 110 #define CLASH_DETECTION
 111
 112 #define HAVE_PTYS
 113 #define HAVE_TERMIOS
 114 #undef BROKEN_TIOCGWINSZ
 115 #undef BROKEN_TIOCGETC
 116
 117 /* It is possible to receive SIGCHLD when there are no children
 118    waiting, because a previous waitsys(2) cleaned up the carcass of child
 119    without clearing the SIGCHLD pending info.  So, use a non-blocking
 120    wait3 instead, which maps to waitpid(2) in SysVr4. */
 121
 122 #define HAVE_WAIT_HEADER
 123 #define WAITTYPE int
 124 #define wait3(status, options, rusage) \
 125   waitpid ((pid_t) -1, (status), (options))
 126 #define WRETCODE(w) (w >> 8)
 127
 128 /* TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
 129    subprocesses the usual way.  But TIOCSIGNAL does work for PTYs, and
 130    this is all we need.  */
 131
 132 #define TIOCSIGSEND TIOCSIGNAL
 133
 134 /* This change means that we don't loop through allocate_pty too many
 135    times in the (rare) event of a failure. */
 136
 137 #undef FIRST_PTY_LETTER
 138 #define FIRST_PTY_LETTER 'z'
 139
 140 /* This sets the name of the master side of the PTY. */
 141
 142 #define PTY_NAME_SPRINTF strcpy (pty_name, "/dev/ptmx");
 143
 144 /* This sets the name of the slave side of the PTY.  On SysVr4,
 145    grantpt(3) forks a subprocess, so keep sigchld_handler() from
 146    intercepting that death.  If any child but grantpt's should die
 147    within, it should be caught after sigrelse(2). */
 148
 149 #define PTY_TTY_NAME_SPRINTF                            \
 150   {                                                     \
 151     char *ptsname (), *ptyname;                         \
 152                                                         \
 153     sighold (SIGCLD);                                   \
 154     if (grantpt (fd) == -1)                             \
 155       { emacs_close (fd); return -1; }                  \
 156     sigrelse (SIGCLD);                                  \
 157     if (unlockpt (fd) == -1)                            \
 158       { emacs_close (fd); return -1; }                  \
 159     if (!(ptyname = ptsname (fd)))                      \
 160       { emacs_close (fd); return -1; }                  \
 161     strncpy (pty_name, ptyname, sizeof (pty_name));     \
 162     pty_name[sizeof (pty_name) - 1] = 0;                \
 163   }
 164
 165 /* Push various streams modules onto a PTY channel. */
 166
 167 #define SETUP_SLAVE_PTY \
 168   if (ioctl (xforkin, I_PUSH, "ptem") == -1)    \
 169     fatal ("ioctl I_PUSH ptem", errno);         \
 170   if (ioctl (xforkin, I_PUSH, "ldterm") == -1)  \
 171     fatal ("ioctl I_PUSH ldterm", errno);       \
 172   if (ioctl (xforkin, I_PUSH, "ttcompat") == -1) \
 173     fatal ("ioctl I_PUSH ttcompat", errno);
 174
 175 /* Undo the SVr3 X11 library definition */
 176 #undef LIB_X11_LIB
 177
 178 /* The definition of this in s-usg5-3.h is not needed in 5.4.  */
 179 /* liblnsl_s should never be used.  The _s suffix implies a shared
 180    library, as opposed to a DLL.  Share libraries were used in SVR3, and are
 181    available only in order to allow SVR3 binaries to run.  They should not be
 182    linked in to new binaries. -- caraway!pinkas@caraway.intel.com.  */
 183 #undef LIBX10_SYSTEM
 184 #undef LIBX11_SYSTEM
 185
 186 /* Tell x11term.c and keyboard.c we have the system V streams feature.  */
 187 #define SYSV_STREAMS
 188
 189 /* This definition was suggested for next release.
 190    So give it a try.  */
 191 #define HAVE_SOCKETS
 192
 193 /* Markus Weiand <weiand@khof.com> says this is needed for Motif on
 194    SINIX.  */
 195 #undef LIBS_SYSTEM
 196 #define LIBS_SYSTEM -lgen
 197
 198 /* arch-tag: 1a0ed909-5faa-434b-b7c3-9d86c63d53a6
 199    (do not change this comment) */