compiler/arossupport/include/options.h

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