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, 2001, 2002, 2003, 2004, 2005,
   3                  2006, 2007, 2008  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 3 of the License, or
  10 (at your option) 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.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 /* This file written by James Van Artsdalen of Dell Computer Corporation.
  21  * james@bigtex.cactus.org.  Subsequently improved for Dell 2.2 by Eric
  22  * S. Raymond <esr@snark.thyrsus.com>.
  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 /* Motif needs -lgen.  */
  36 #define LIBS_SYSTEM -lsocket -lnsl -lelf -lgen
  37 #define ORDINARY_LINK
  38
  39 #if 0
  40 #ifdef ORDINARY_LINK
  41 #define LIB_STANDARD -lc /usr/ucblib/libucb.a
  42 #else
  43 #define START_FILES pre-crt0.o /usr/ccs/lib/crt1.o /usr/ccs/lib/crti.o /usr/ccs/lib/values-Xt.o
  44 #define LIB_STANDARD -lc /usr/ucblib/libucb.a /usr/ccs/lib/crtn.o
  45 #endif
  46 #else
  47
  48 #ifdef ORDINARY_LINK
  49 #define LIB_STANDARD
  50 #else
  51 #define START_FILES pre-crt0.o /usr/ccs/lib/crt1.o /usr/ccs/lib/crti.o /usr/ccs/lib/values-Xt.o
  52 #define LIB_STANDARD -lc /usr/ccs/lib/crtn.o
  53 #endif
  54 #endif
  55
  56 /* there are no -lg libraries on this system, and no libPW */
  57
  58 #define LIBS_DEBUG
  59
  60 /* Undump with ELF */
  61
  62 #undef COFF
  63
  64 #define UNEXEC unexelf.o
  65
  66 /* <sys/stat.h> *defines* stat(2) as a static function.  If "static"
  67  * is blank, then many files will have a public definition for stat(2).
  68  */
  69
  70 #undef static
  71
  72 /* Get FIONREAD from <sys/filio.h>.  Get <sys/ttold.h> to get struct
  73  * tchars. But get <termio.h> first to make sure ttold.h doesn't
  74  * interfere.  And don't try to use SIGIO yet.
  75  */
  76
  77 #ifndef NOT_C_CODE
  78 #include <sys/wait.h>
  79 #endif
  80
  81 #ifdef emacs
  82 #ifndef NO_FILIO_H
  83 #include <sys/filio.h>
  84 #endif
  85 #include <termio.h>
  86 #include <sys/ttold.h>
  87 #include <signal.h>
  88 #include <sys/stream.h>
  89 #include <sys/stropts.h>
  90 #include <sys/termios.h>
  91 #define BROKEN_SIGIO
  92 #endif
  93
  94 /* Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
  95  * instead, there's a system variable _sys_nsig.  Unfortunately, we need the
  96  * constant to dimension an array.  So wire in the appropriate value here.
  97  */
  98 #define NSIG_MINIMUM 32
  99
 100 /* We need bss_end from emacs.c for undumping */
 101
 102 #ifndef USG_SHARED_LIBRARIES
 103 #define USG_SHARED_LIBRARIES
 104 #endif
 105
 106 /* We can support this */
 107
 108 #define CLASH_DETECTION
 109
 110 #define HAVE_PTYS
 111 #define HAVE_TERMIOS
 112 #undef BROKEN_TIOCGWINSZ
 113 #undef BROKEN_TIOCGETC
 114
 115 /* It is possible to receive SIGCHLD when there are no children
 116    waiting, because a previous waitsys(2) cleaned up the carcass of child
 117    without clearing the SIGCHLD pending info.  So, use a non-blocking
 118    wait3 instead, which maps to waitpid(2) in SysVr4. */
 119
 120 #define HAVE_WAIT_HEADER
 121 #define WAITTYPE int
 122 #define wait3(status, options, rusage) \
 123   waitpid ((pid_t) -1, (status), (options))
 124 #define WRETCODE(w) (w >> 8)
 125
 126 /* TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
 127    subprocesses the usual way.  But TIOCSIGNAL does work for PTYs, and
 128    this is all we need.  */
 129
 130 #define TIOCSIGSEND TIOCSIGNAL
 131
 132 /* This change means that we don't loop through allocate_pty too many
 133    times in the (rare) event of a failure. */
 134
 135 #undef FIRST_PTY_LETTER
 136 #define FIRST_PTY_LETTER 'z'
 137
 138 /* This sets the name of the master side of the PTY. */
 139
 140 #define PTY_NAME_SPRINTF strcpy (pty_name, "/dev/ptmx");
 141
 142 /* This sets the name of the slave side of the PTY.  On SysVr4,
 143    grantpt(3) forks a subprocess, so keep sigchld_handler() from
 144    intercepting that death.  If any child but grantpt's should die
 145    within, it should be caught after sigrelse(2). */
 146
 147 #define PTY_TTY_NAME_SPRINTF                            \
 148   {                                                     \
 149     char *ptsname (), *ptyname;                         \
 150                                                         \
 151     sighold (SIGCLD);                                   \
 152     if (grantpt (fd) == -1)                             \
 153       { emacs_close (fd); return -1; }                  \
 154     sigrelse (SIGCLD);                                  \
 155     if (unlockpt (fd) == -1)                            \
 156       { emacs_close (fd); return -1; }                  \
 157     if (!(ptyname = ptsname (fd)))                      \
 158       { emacs_close (fd); return -1; }                  \
 159     strncpy (pty_name, ptyname, sizeof (pty_name));     \
 160     pty_name[sizeof (pty_name) - 1] = 0;                \
 161   }
 162
 163 /* Push various streams modules onto a PTY channel. */
 164
 165 #define SETUP_SLAVE_PTY \
 166   if (ioctl (xforkin, I_PUSH, "ptem") == -1)    \
 167     fatal ("ioctl I_PUSH ptem", errno);         \
 168   if (ioctl (xforkin, I_PUSH, "ldterm") == -1)  \
 169     fatal ("ioctl I_PUSH ldterm", errno);       \
 170   if (ioctl (xforkin, I_PUSH, "ttcompat") == -1) \
 171     fatal ("ioctl I_PUSH ttcompat", errno);
 172
 173 /* Undo the SVr3 X11 library definition */
 174 #undef LIB_X11_LIB
 175
 176 /* The definition of this in s-usg5-3.h is not needed in 5.4.  */
 177 /* liblnsl_s should never be used.  The _s suffix implies a shared
 178    library, as opposed to a DLL.  Share libraries were used in SVR3, and are
 179    available only in order to allow SVR3 binaries to run.  They should not be
 180    linked in to new binaries. -- caraway!pinkas@caraway.intel.com.  */
 181 #undef LIBX11_SYSTEM
 182
 183 /* Tell x11term.c and keyboard.c we have the system V streams feature.  */
 184 #define SYSV_STREAMS
 185
 186 /* This definition was suggested for next release.
 187    So give it a try.  */
 188 #define HAVE_SOCKETS
 189
 190 /* Markus Weiand <weiand@khof.com> says this is needed for Motif on
 191    SINIX.  */
 192 #undef LIBS_SYSTEM
 193 #define LIBS_SYSTEM -lgen
 194
 195 /* arch-tag: 1a0ed909-5faa-434b-b7c3-9d86c63d53a6
 196    (do not change this comment) */