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 #undef WORDS_BIG_ENDIAN
  14 #undef LIB_STANDARD
  15 #undef START_FILES
  16 #undef COFF
  17 #undef TERMINFO
  18 #define MAIL_USE_FLOCK
  19 #define HAVE_UNION_WAIT
  20
  21
  22 #ifdef MACH
  23 #define START_FILES pre-crt0.o /usr/lib/crt0.o
  24 #else
  25 /* This line starts being needed with ultrix 4.0.  */
  26 /* You must delete it for version 3.1.  */
  27 #define START_FILES pre-crt0.o /usr/lib/cmplrs/cc/crt0.o
  28 #endif
  29
  30 #if defined (__NetBSD__) || defined (__OpenBSD__)
  31 #undef START_FILES
  32 #undef RUN_TIME_REMAP
  33 #define START_FILES pre-crt0.o /usr/lib/crt0.o
  34 #define CANNOT_DUMP
  35 #undef UNEXEC
  36 #endif /* NetBSD || OpenBSD */
  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 #undef LINKER
  55
  56 #ifdef ultrix
  57 /* Ultrix 4.2 (perhaps also 4.1) implements O_NONBLOCK
  58    but it doesn't work right;
  59    and it causes hanging in read_process_output.  */
  60 #define BROKEN_O_NONBLOCK
  61 #endif
  62
  63 #if defined (OSF1) || defined (MACH)
  64 #undef C_ALLOCA
  65 #define HAVE_ALLOCA
  66 #endif
  67
  68 #ifndef __NetBSD__
  69 /* mcc@timessqr.gc.cuny.edu says this makes Emacs work with DECnet.  */
  70 #ifdef HAVE_LIBDNET
  71 #define LIBS_MACHINE -ldnet
  72 #endif
  73
  74 /* mcc@timessqr.gc.cuny.edu says it is /vmunix on Ultrix 4.2a.  */
  75 #undef KERNEL_FILE
  76 #define KERNEL_FILE "/vmunix"
  77 #endif
  78
  79 #ifdef ultrix
  80 /* Jim Wilson writes:
  81    [...] The X11 include files that Dec distributes with Ultrix
  82    are bogus.
  83
  84    When __STDC__ is defined (which is true with gcc), the X11 include files
  85    try to define prototypes.  The prototypes however use types which haven't
  86    been defined yet, and thus we get syntax/parse errors.
  87
  88    You can not fix this by changing the include files, because the prototypes
  89    create circular dependencies, in particular Xutil.h depends on types defined
  90    in Xlib.h, and Xlib.h depends on types defined in Xutil.h.  So, no matter
  91    which order you try to include them in, it will still fail.
  92
  93    Compiling with -DNeedFunctionPrototypes=0 will solve the problem by
  94    directly inhibiting the bad prototypes.  This could perhaps just be put in
  95    an a Ultrix configuration file.
  96
  97    Using the MIT X11 distribution instead of the one provided by Dec will
  98    also solve the problem, but I doubt you can convince everyone to do this. */
  99 /* Addendum: the MIT X11 distribution neglects to define certain symbols
 100    when NeedFunctionPrototypes is 0, but still tries to use them when
 101    NeedVarargsPrototypes is 1 (which is its default value).  So if we're
 102    going to disable non-variadic prototypes, we also need to disable
 103    variadic prototypes.  --kwzh@gnu.ai.mit.edu */
 104 #define C_SWITCH_X_MACHINE -DNeedFunctionPrototypes=0 -DNeedVarargsPrototypes=0
 105 #endif
 106
 107 /* Enable a fix in process.c.  */
 108 #define SET_CHILD_PTY_PGRP