src/m/pmax.h

   1 /* Machine description file for DEC MIPS machines.
   2
   3    Copyright (C) 1992, 1999, 2001, 2002, 2003, 2004,
   4                  2005, 2006, 2007, 2008  Free Software Foundation, Inc.
   5
   6 This file is part of GNU Emacs.
   7
   8 GNU Emacs is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 3, or (at your option)
  11 any later version.
  12
  13 GNU Emacs is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GNU Emacs; see the file COPYING.  If not, write to
  20 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  21 Boston, MA 02110-1301, USA.  */
  22
  23
  24 #include "mips.h"
  25
  26 /* The following line tells the configuration script what sort of
  27    operating system this machine is likely to run.
  28    USUAL-OPSYS="note"
  29
  30 NOTE-START
  31 The operating system would be either osf1, ultrix, or NetBSD.
  32 NOTE-END  */
  33
  34 #ifndef __MIPSEB__
  35 #undef WORDS_BIG_ENDIAN
  36 #endif
  37 #if defined (__NetBSD__)
  38 #define BROKEN_NOCOMBRELOC
  39 #else
  40 #undef LIB_STANDARD
  41 #undef START_FILES
  42 #endif
  43 #undef COFF
  44 #undef TERMINFO
  45 #define MAIL_USE_FLOCK
  46 #define HAVE_UNION_WAIT
  47
  48
  49 #ifdef MACH
  50 #define START_FILES pre-crt0.o /usr/lib/crt0.o
  51 #else
  52 #if !defined (__NetBSD__)
  53 /* This line starts being needed with ultrix 4.0.  */
  54 /* You must delete it for version 3.1.  */
  55 #define START_FILES pre-crt0.o /usr/lib/cmplrs/cc/crt0.o
  56 #endif
  57 #endif
  58
  59 /* Supposedly the following will overcome a kernel bug.  */
  60 #undef LD_SWITCH_MACHINE
  61 #undef DATA_START
  62 #define DATA_START 0x10000000
  63 #define DATA_SEG_BITS 0x10000000
  64
  65 #if 0
  66 /* I don't see any such conflict in Ultrix 4.2, 4.2a, or 4.3.  And
  67    the relocating allocator is a real win.  -JimB  */
  68
  69 /* In Ultrix 4.1, XvmsAlloc.o in libX11.a seems to insist
  70    on defining malloc itself.  This should avoid conflicting with it.  */
  71 #define SYSTEM_MALLOC
  72 #endif
  73
  74 /* Override what mips.h says about this.  */
  75 #if !defined (__NetBSD__)
  76 #undef LINKER
  77 #endif
  78
  79 #ifdef ultrix
  80 /* Ultrix 4.2 (perhaps also 4.1) implements O_NONBLOCK
  81    but it doesn't work right;
  82    and it causes hanging in read_process_output.  */
  83 #define BROKEN_O_NONBLOCK
  84 #endif
  85
  86 #ifndef __NetBSD__
  87 /* mcc@timessqr.gc.cuny.edu says this makes Emacs work with DECnet.  */
  88 #ifdef HAVE_LIBDNET
  89 #define LIBS_MACHINE -ldnet
  90 #endif
  91
  92 /* mcc@timessqr.gc.cuny.edu says it is /vmunix on Ultrix 4.2a.  */
  93 #undef KERNEL_FILE
  94 #define KERNEL_FILE "/vmunix"
  95 #endif
  96
  97 #ifdef ultrix
  98 /* Jim Wilson writes:
  99    [...] The X11 include files that Dec distributes with Ultrix
 100    are bogus.
 101
 102    When __STDC__ is defined (which is true with gcc), the X11 include files
 103    try to define prototypes.  The prototypes however use types which haven't
 104    been defined yet, and thus we get syntax/parse errors.
 105
 106    You can not fix this by changing the include files, because the prototypes
 107    create circular dependencies, in particular Xutil.h depends on types defined
 108    in Xlib.h, and Xlib.h depends on types defined in Xutil.h.  So, no matter
 109    which order you try to include them in, it will still fail.
 110
 111    Compiling with -DNeedFunctionPrototypes=0 will solve the problem by
 112    directly inhibiting the bad prototypes.  This could perhaps just be put in
 113    an a Ultrix configuration file.
 114
 115    Using the MIT X11 distribution instead of the one provided by Dec will
 116    also solve the problem, but I doubt you can convince everyone to do this. */
 117 /* Addendum: the MIT X11 distribution neglects to define certain symbols
 118    when NeedFunctionPrototypes is 0, but still tries to use them when
 119    NeedVarargsPrototypes is 1 (which is its default value).  So if we're
 120    going to disable non-variadic prototypes, we also need to disable
 121    variadic prototypes.  --kwzh@gnu.ai.mit.edu */
 122 #define C_SWITCH_X_MACHINE -DNeedFunctionPrototypes=0 -DNeedVarargsPrototypes=0
 123 #endif
 124
 125 /* Enable a fix in process.c.  */
 126 #define SET_CHILD_PTY_PGRP
 127
 128 /* arch-tag: 45d5070e-d2b7-479f-b336-3fd497c36e15
 129    (do not change this comment) */