code.delx.au - gnu-emacs/blob - src/m/pmax.h

   1 /* Machine description file for DEC MIPS machines.  */
   2
   3 #include "mips.h"
   4
   5 /* The following line tells the configuration script what sort of
   6    operating system this machine is likely to run.
   7    USUAL-OPSYS="note"
   8
   9 NOTE-START
  10 The operating system would be either osf1, ultrix, or NetBSD.
  11 NOTE-END  */
  12
  13 #ifndef __MIPSEB__
  14 #undef WORDS_BIG_ENDIAN
  15 #endif
  16 #if defined (__NetBSD__)
  17 #define BROKEN_NOCOMBRELOC
  18 #else
  19 #undef LIB_STANDARD
  20 #undef START_FILES
  21 #endif
  22 #undef COFF
  23 #undef TERMINFO
  24 #define MAIL_USE_FLOCK
  25 #define HAVE_UNION_WAIT
  26
  27
  28 #ifdef MACH
  29 #define START_FILES pre-crt0.o /usr/lib/crt0.o
  30 #else
  31 #if !defined (__NetBSD__)
  32 /* This line starts being needed with ultrix 4.0.  */
  33 /* You must delete it for version 3.1.  */
  34 #define START_FILES pre-crt0.o /usr/lib/cmplrs/cc/crt0.o
  35 #endif
  36 #endif
  37
  38 /* Supposedly the following will overcome a kernel bug.  */
  39 #undef LD_SWITCH_MACHINE
  40 #undef DATA_START
  41 #define DATA_START 0x10000000
  42 #define DATA_SEG_BITS 0x10000000
  43
  44 #if 0
  45 /* I don't see any such conflict in Ultrix 4.2, 4.2a, or 4.3.  And
  46    the relocating allocator is a real win.  -JimB  */
  47
  48 /* In Ultrix 4.1, XvmsAlloc.o in libX11.a seems to insist
  49    on defining malloc itself.  This should avoid conflicting with it.  */
  50 #define SYSTEM_MALLOC
  51 #endif
  52
  53 /* Override what mips.h says about this.  */
  54 #if !defined (__NetBSD__)
  55 #undef LINKER
  56 #endif
  57
  58 #ifdef ultrix
  59 /* Ultrix 4.2 (perhaps also 4.1) implements O_NONBLOCK
  60    but it doesn't work right;
  61    and it causes hanging in read_process_output.  */
  62 #define BROKEN_O_NONBLOCK
  63 #endif
  64
  65 #ifndef __NetBSD__
  66 /* mcc@timessqr.gc.cuny.edu says this makes Emacs work with DECnet.  */
  67 #ifdef HAVE_LIBDNET
  68 #define LIBS_MACHINE -ldnet
  69 #endif
  70
  71 /* mcc@timessqr.gc.cuny.edu says it is /vmunix on Ultrix 4.2a.  */
  72 #undef KERNEL_FILE
  73 #define KERNEL_FILE "/vmunix"
  74 #endif
  75
  76 #ifdef ultrix
  77 /* Jim Wilson writes:
  78    [...] The X11 include files that Dec distributes with Ultrix
  79    are bogus.
  80
  81    When __STDC__ is defined (which is true with gcc), the X11 include files
  82    try to define prototypes.  The prototypes however use types which haven't
  83    been defined yet, and thus we get syntax/parse errors.
  84
  85    You can not fix this by changing the include files, because the prototypes
  86    create circular dependencies, in particular Xutil.h depends on types defined
  87    in Xlib.h, and Xlib.h depends on types defined in Xutil.h.  So, no matter
  88    which order you try to include them in, it will still fail.
  89
  90    Compiling with -DNeedFunctionPrototypes=0 will solve the problem by
  91    directly inhibiting the bad prototypes.  This could perhaps just be put in
  92    an a Ultrix configuration file.
  93
  94    Using the MIT X11 distribution instead of the one provided by Dec will
  95    also solve the problem, but I doubt you can convince everyone to do this. */
  96 /* Addendum: the MIT X11 distribution neglects to define certain symbols
  97    when NeedFunctionPrototypes is 0, but still tries to use them when
  98    NeedVarargsPrototypes is 1 (which is its default value).  So if we're
  99    going to disable non-variadic prototypes, we also need to disable
 100    variadic prototypes.  --kwzh@gnu.ai.mit.edu */
 101 #define C_SWITCH_X_MACHINE -DNeedFunctionPrototypes=0 -DNeedVarargsPrototypes=0
 102 #endif
 103
 104 /* Enable a fix in process.c.  */
 105 #define SET_CHILD_PTY_PGRP
 106
 107 /* arch-tag: 45d5070e-d2b7-479f-b336-3fd497c36e15
 108    (do not change this comment) */