arch/.unmaintained/morphos/Include/aros/options.h

   1 /*
   2     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #pragma pack(2)
   7 #ifndef AROS_OPTIONS_H
   8 #define AROS_OPTIONS_H
   9
  10 /******************************************************************************
  11
  12     FILE
  13         $Id$
  14
  15     DESCRIPTION
  16         This files defines a couple of options which change the way
  17         the OS is compiled.
  18
  19 ******************************************************************************/
  20
  21 /* Should the system compile a working SetFunction()-call? If you
  22    enable this, "real" shared libraries (with LVOs and the like)
  23    will be generated and all Functions will be called via LVOs.
  24    If you disable this, all functions will be called somewhat more
  25    directly. To enable the option, change the 0 to 1. */
  26 #ifndef EnableSetFunction
  27 #   define EnableSetFunction    1
  28 #endif
  29 #if EnableSetFunction
  30 #   define UseLVOs              1
  31 #endif
  32
  33 /* Should the OS use registerized arguments or pass the arguments on
  34    stack? */
  35 #ifndef UseRegisterArgs
  36 #   define UseRegisterArgs      0
  37 #endif
  38
  39 /* Should the OS be compiled with macros that call the actual function
  40    and with the library base as first parameter or should the library
  41    base be a global variable (shared by all functions). */
  42 #ifndef LibBaseShouldBeAParameter
  43 #   define LibBaseShouldBeAParameter    1
  44 #endif
  45
  46 /* Should the OS be compiled with LVO tables or should the functions
  47    be called directly? Note that this is superseeded by
  48    EnableSetFunction. */
  49 #ifndef UseLVOs
  50 #   define UseLVOs              0
  51 #endif
  52
  53 /* If the following is defined, errnos from unix function-calls that could not
  54    be interpreted as AROS error numbers (ERROR_* defined in <dos/dos.h> are
  55    passed back via SetIoErr(). The errno is incremented by the value of this
  56    define. Note that this value should generate unique error numbers! Note
  57    also that Fault() checks, whether an error-number is in fact an errno, by
  58    AND'ing this value to the error number! The recommended value is 0x40000000
  59    (ie only the 30th bit set).
  60
  61    If this is defined to 0, the errno will not be passed through. Instead
  62    ERROR_UNKNOWN is returned, if the errno could not be interpreted.
  63
  64    On AROS systems without any Unix emulation (ie every system without
  65    underlying POSIX-compatible operating system), this should be set to 0 to
  66    simplify the resulting code. */
  67 #ifndef PassThroughErrnos
  68 #   define PassThroughErrnos    0
  69 /* #   define PassThroughErrnos 0x40000000 */
  70 #endif
  71
  72 /******************************************************************************
  73 *****  END aros/options.h
  74 ******************************************************************************/
  75
  76 #endif /* AROS_OPTIONS_H */
  77
  78 #pragma pack()