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 /* Use ptem.h to get structures related to windows.  */
  49
  50 #define NEED_PTEM_H
  51
  52 /* Undump with ELF */
  53
  54 #undef COFF
  55
  56 #define UNEXEC unexelf.o
  57
  58 /* Get FIONREAD from <sys/filio.h>.  Get <sys/ttold.h> to get struct
  59  * tchars. But get <termio.h> first to make sure ttold.h doesn't
  60  * interfere.  And don't try to use SIGIO yet.
  61  */
  62
  63 #ifdef emacs
  64 #include <sys/filio.h>
  65 #include <termio.h>
  66 #include <sys/ttold.h>
  67 #include <signal.h>
  68 #undef SIGIO
  69 #endif
  70
  71 /* libc has this stuff, but still not utimes. */
  72
  73 #define HAVE_RENAME
  74 #define HAVE_SELECT
  75 #define HAVE_TIMEVAL
  76 #define HAVE_CLOSEDIR
  77 #define HAVE_GETTIMEOFDAY
  78 #define HAVE_DUP2
  79
  80 /* <sys/stat.h> *defines* stat(2) as a static function.  If "static"
  81  * is blank, then many files will have a public definition for stat(2).
  82  */
  83
  84 #undef static
  85
  86 /* We need bss_end from emacs.c for undumping */
  87
  88 #ifndef USG_SHARED_LIBRARIES
  89 #define USG_SHARED_LIBRARIES
  90 #endif
  91
  92 /* We can support this */
  93
  94 #define CLASH_DETECTION
  95
  96 #define HAVE_PTYS
  97 #define HAVE_SETSID
  98
  99 /* It is possible to receive SIGCHLD when there are no children
 100    waiting, because a previous waitsys(2) cleaned up the carcass of child
 101    without clearing the SIGCHLD pending info.  So, use a non-blocking
 102    wait3 instead, which maps to waitpid(2) in SysVr4. */
 103
 104 #define HAVE_WAIT_HEADER
 105 #define WAITTYPE int
 106 #define wait3(status, options, rusage) \
 107   waitpid((pid_t) -1, (status), (options))
 108 #define WRETCODE(w) (w >> 8)
 109
 110 /* TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
 111    subprocesses the usual way.  But TIOCSIGNAL does work for PTYs, and
 112    this is all we need.  */
 113
 114 #define TIOCSIGSEND TIOCSIGNAL
 115
 116 /* This change means that we don't loop through allocate_pty too many
 117    times in the (rare) event of a failure. */
 118
 119 #undef FIRST_PTY_LETTER
 120 #define FIRST_PTY_LETTER 'z'
 121
 122 /* This sets the name of the master side of the PTY. */
 123
 124 #define PTY_NAME_SPRINTF strcpy (pty_name, "/dev/ptmx");
 125
 126 /* This sets the name of the slave side of the PTY.  On SysVr4,
 127    grantpt(3) forks a subprocess, so keep sigchld_handler() from
 128    intercepting that death.  If any child but grantpt's should die
 129    within, it should be caught after sigrelse(2). */
 130
 131 #define PTY_TTY_NAME_SPRINTF                    \
 132   {                                             \
 133     char *ptsname(), *ptyname;                  \
 134                                                 \
 135     sighold(SIGCLD);                            \
 136     if (grantpt(fd) == -1)                      \
 137       fatal("could not grant slave pty");       \
 138     sigrelse(SIGCLD);                           \
 139     if (unlockpt(fd) == -1)                     \
 140       fatal("could not unlock slave pty");      \
 141     if (!(ptyname = ptsname(fd)))               \
 142       fatal ("could not enable slave pty");     \
 143     strncpy(pty_name, ptyname, sizeof(pty_name)); \
 144     pty_name[sizeof(pty_name) - 1] = 0;         \
 145   }
 146
 147 /* Push various streams modules onto a PTY channel. */
 148
 149 #define SETUP_SLAVE_PTY \
 150   if (ioctl (xforkin, I_PUSH, "ptem") == -1)    \
 151     fatal ("ioctl I_PUSH ptem", errno);         \
 152   if (ioctl (xforkin, I_PUSH, "ldterm") == -1)  \
 153     fatal ("ioctl I_PUSH ldterm", errno);       \
 154   if (ioctl (xforkin, I_PUSH, "ttcompat") == -1) \
 155     fatal ("ioctl I_PUSH ttcompat", errno);
 156
 157 /* The definition of this in usg5-3.h is not needed in 5.4.  */
 158
 159 #undef LIBX11_SYSTEM