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 #undef UNEXEC
  34 #define UNEXEC unexelf.o
  35 #endif /* NetBSD || OpenBSD */
  36
  37 /* Supposedly the following will overcome a kernel bug.  */
  38 #undef LD_SWITCH_MACHINE
  39 #undef DATA_START
  40 #define DATA_START 0x10000000
  41 #define DATA_SEG_BITS 0x10000000
  42
  43 #if 0
  44 /* I don't see any such conflict in Ultrix 4.2, 4.2a, or 4.3.  And
  45    the relocating allocator is a real win.  -JimB  */
  46
  47 /* In Ultrix 4.1, XvmsAlloc.o in libX11.a seems to insist
  48    on defining malloc itself.  This should avoid conflicting with it.  */
  49 #define SYSTEM_MALLOC
  50 #endif
  51
  52 /* Override what mips.h says about this.  */
  53 #if !defined (__NetBSD__)
  54 #undef LINKER
  55 #endif
  56
  57 #ifdef ultrix
  58 /* Ultrix 4.2 (perhaps also 4.1) implements O_NONBLOCK
  59    but it doesn't work right;
  60    and it causes hanging in read_process_output.  */
  61 #define BROKEN_O_NONBLOCK
  62 #endif
  63
  64 #if defined (OSF1) || defined (MACH)
  65 #undef C_ALLOCA
  66 #define HAVE_ALLOCA
  67 #endif
  68
  69 #ifndef __NetBSD__
  70 /* mcc@timessqr.gc.cuny.edu says this makes Emacs work with DECnet.  */
  71 #ifdef HAVE_LIBDNET
  72 #define LIBS_MACHINE -ldnet
  73 #endif
  74
  75 /* mcc@timessqr.gc.cuny.edu says it is /vmunix on Ultrix 4.2a.  */
  76 #undef KERNEL_FILE
  77 #define KERNEL_FILE "/vmunix"
  78 #endif
  79
  80 #ifdef ultrix
  81 /* Jim Wilson writes:
  82    [...] The X11 include files that Dec distributes with Ultrix
  83    are bogus.
  84
  85    When __STDC__ is defined (which is true with gcc), the X11 include files
  86    try to define prototypes.  The prototypes however use types which haven't
  87    been defined yet, and thus we get syntax/parse errors.
  88
  89    You can not fix this by changing the include files, because the prototypes
  90    create circular dependencies, in particular Xutil.h depends on types defined
  91    in Xlib.h, and Xlib.h depends on types defined in Xutil.h.  So, no matter
  92    which order you try to include them in, it will still fail.
  93
  94    Compiling with -DNeedFunctionPrototypes=0 will solve the problem by
  95    directly inhibiting the bad prototypes.  This could perhaps just be put in
  96    an a Ultrix configuration file.
  97
  98    Using the MIT X11 distribution instead of the one provided by Dec will
  99    also solve the problem, but I doubt you can convince everyone to do this. */
 100 /* Addendum: the MIT X11 distribution neglects to define certain symbols
 101    when NeedFunctionPrototypes is 0, but still tries to use them when
 102    NeedVarargsPrototypes is 1 (which is its default value).  So if we're
 103    going to disable non-variadic prototypes, we also need to disable
 104    variadic prototypes.  --kwzh@gnu.ai.mit.edu */
 105 #define C_SWITCH_X_MACHINE -DNeedFunctionPrototypes=0 -DNeedVarargsPrototypes=0
 106 #endif
 107
 108 /* Enable a fix in process.c.  */
 109 #define SET_CHILD_PTY_PGRP