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 Use -opsystem=osf1 for OSF/1, and -opsystem=bsd4-3 otherwise.
  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 /* Supposedly the following will overcome a kernel bug.  */
  31 #undef LD_SWITCH_MACHINE
  32 #undef DATA_START
  33 #define DATA_START 0x10000000
  34 #define DATA_SEG_BITS 0x10000000
  35
  36 #if 0
  37 /* I don't see any such conflict in Ultrix 4.2, 4.2a, or 4.3.  And
  38    the relocating allocator is a real win.  -JimB  */
  39
  40 /* In Ultrix 4.1, XvmsAlloc.o in libX11.a seems to insist
  41    on defining malloc itself.  This should avoid conflicting with it.  */
  42 #define SYSTEM_MALLOC
  43 #endif
  44
  45 /* Override what mips.h says about this.  */
  46 #undef LINKER
  47
  48 /* Ultrix 4.2 (perhaps also 4.1) implements O_NONBLOCK
  49    but it doesn't work right;
  50    and it causes hanging in read_process_output.  */
  51 #define BROKEN_O_NONBLOCK
  52
  53 #if defined (OSF1) || defined (MACH)
  54 #undef C_ALLOCA
  55 #define HAVE_ALLOCA
  56 #endif
  57
  58 /* mcc@timessqr.gc.cuny.edu says this makes Emacs work with DECnet.  */
  59 #ifdef HAVE_LIBDNET
  60 #define LIBS_MACHINE -ldnet
  61 #endif
  62
  63 /* mcc@timessqr.gc.cuny.edu says it is /vmunix on Ultrix 4.2a.  */
  64 #undef KERNEL_FILE
  65 #define KERNEL_FILE "/vmunix"
  66
  67 #ifndef MACH
  68 /* Jim Wilson writes:
  69    [...] The X11 include files that Dec distributes with Ultrix
  70    are bogus.
  71
  72    When __STDC__ is defined (which is true with gcc), the X11 include files
  73    try to define prototypes.  The prototypes however use types which haven't
  74    been defined yet, and thus we get syntax/parse errors.
  75
  76    You can not fix this by changing the include files, because the prototypes
  77    create circular dependencies, in particular Xutil.h depends on types defined
  78    in Xlib.h, and Xlib.h depends on types defined in Xutil.h.  So, no matter
  79    which order you try to include them in, it will still fail.
  80
  81    Compiling with -DNeedFunctionPrototypes=0 will solve the problem by
  82    directly inhibiting the bad prototypes.  This could perhaps just be put in
  83    an a Ultrix configuration file.
  84
  85    Using the MIT X11 distribution instead of the one provided by Dec will
  86    also solve the problem, but I doubt you can convince everyone to do this. */
  87 /* Addendum: the MIT X11 distribution neglects to define certain symbols
  88    when NeedFunctionPrototypes is 0, but still tries to use them when
  89    NeedVarargsPrototypes is 1 (which is its default value).  So if we're
  90    going to disable non-variadic prototypes, we also need to disable
  91    variadic prototypes.  --kwzh@gnu.ai.mit.edu */
  92 #define C_SWITCH_X_MACHINE -DNeedFunctionPrototypes=0 -DNeedVarargsPrototypes=0
  93 #endif
  94
  95 /* Enable a fix in process.c.  */
  96 #define SET_CHILD_PTY_PGRP