/****************************************************************************/
/*                                                                          */
/*  NCS_CENV.H                                                              */
/*                                                                          */
/*  Header for compiler environment support                                 */
/*                                                                          */
/*  Copyright (C) 1990-2015 by Allen Keith Nash                             */
/*  All rights reserved.                                                    */
/*                                                                          */
/****************************************************************************/

/* TLIB[@status] "%n [%v] %f" */
/* "ncs_cenv.h [1] 06-May-14,09:57:24" */

#ifndef _NCS_CENV_H
#define _NCS_CENV_H

/*****************************************************************************

Environments supported:

    __WATCOM_DOS16__    Watcom, DOS                 16-bit

    __WATCOM_DOS32__    Watcom, DOS4GW DOS extender 32-bit

    __WATCOM_WIN16__    Watcom, Windows 3.x         16-bit

    __WATCOM_WIN32__    Watcom, Windows 95 & NT     32-bit

    __WATCOM_OS216__    Watcom, OS/2 1.x            16-bit

    __WATCOM_OS232__    Watcom, OS/2 2.x+           32-bit

    __BORLAND_DOS16__   Borland, DOS                16-bit

    __BORLAND_WIN16__   Borland, Windows 3.x        16-bit

    __BORLAND_OS232__   Borland, OS/2 2.x+          32-bit

    __MSOFT_DOS16__     Microsoft, DOS              16-bit

    __MSOFT_OS216__     Microsoft, OS/2             16-bit

    __MSOFT_WIN16__     Microsoft, Windows 3.x      16-bit

    __MSOFT_WIN32__     Microsoft, Win32            32-bit
    
    __MSOFT_WIN64__     Microsoft, Win64            64-bit


Other identifiers we use/create:

    __WATCOMC__         Defined if compiler is WATCOM
    __BORLANDC__        Defined if compiler is Borland
    __MSC__             Defined if compiler is Microsoft

    __MSDOS__           Defined if target OS is DOS
    __WINDOWS__         Defined if target OS is Windows
    __OS2__             Defined if target OS is OS/2

    __DOS16__           Defined if target OS is 16-bit DOS
    __DOS32__           Defined if target OS is 32-bit DOS

    __OS216__           Defined if target OS is 16-bit OS/2 (1.x)
    __OS232__           Defined if target OS is 32-bit OS/2 (2.x+)

    __WIN16__           Defined if target OS is 16-bit Windows (Win3.x)
    __WIN32__           Defined if target OS is 32-bit Windows (Win95/NT/etc.)
    __WIN64__           Defined if target OS is 64-bit Windows

    __16BIT__           Defined if word size is 16 bits
    __32BIT__           Defined if word size is 32 bits
    __64BIT__           Defined if word size is 64 bits

*****************************************************************************/

/****************************************************************************/
/*                                                                          */
/*  Identify compiler and environment                                       */
/*                                                                          */
/****************************************************************************/

/**********/
/* Watcom */
/**********/

#if defined(__WATCOMC__)

    #if !defined(NCS_WARN_OF_EMPTY_FUNCTIONS)
        #pragma warning 656 5;
        #pragma warning 657 5;
    #endif

    /* Watcom doesn't have the POSIX/ANSI version of these, so 
       we will just work around the lack with macros: 
       */

    #define _getcwd getcwd
    #define _chdir chdir
    #define _open  open 
    #define _sopen sopen 
    #define _close close
    #define _setmode setmode
    #define _read  read 
    #define _write write
    #define _tell tell
    #define _rmdir rmdir
    #define _mkdir mkdir
    #define _filelength filelength
    #define _tzset tzset
    #define _getpid getpid
    #define _ultoa ultoa

    #if defined(__DOS__)

        #if defined(M_I86)

            #define __WATCOM_DOS16__
            #define __16BIT__
            #define __DOS16__

        #elif defined(M_I386)

            #define __WATCOM_DOS32__
            #define __32BIT__
            #define __DOS32__

        #endif

        #if !defined(__MSDOS__)
            #define __MSDOS__
        #endif

    #elif defined(__OS2__)

        #if defined(M_I86)

            #define __WATCOM_OS216__
            #define __16BIT__
            #define __OS216__

        #elif defined(M_I386)

            #define __WATCOM_OS232__
            #define __32BIT__
            #define __OS232__

        #endif

    #elif defined(__NT__)

        #define __WATCOM_WIN32__

        #if !defined(__WINDOWS__)
            #define __WINDOWS__
        #endif

        #if defined(__FLAT__)
            #define __32BIT__
        #endif

        #define __WIN32__

    #elif defined(__WINDOWS__)

        #define __WATCOM_WIN16__
        #define __16BIT__
        #define __WIN16__

    #else

        #error Unknown Watcom environment!

    #endif
#endif

/***********/
/* Borland */
/***********/

#if defined(__BORLANDC__)

    #if defined(_Windows)

        #define __16BIT__
        #define __WINDOWS__
        #define __BORLAND_WIN16__
        #define __WIN16__
        #if defined(__MSDOS__)
            #undef __MSDOS__
        #endif

    #elif defined(__OS2__)

        #define __BORLAND_OS232__    
        #define __32BIT__
        #define __OS232__

    #elif defined(__MSDOS__)

        #define __16BIT__
        #define __BORLAND_DOS16__    
        #define __DOS16__

    #else

        #error Unknown Borland environment!

    #endif
#endif

/*************/
/* Microsoft */
/*************/

#if defined(_MSC_VER) && (_MSC_VER >= 600)

    #define __MSC__

    #if (_MSC_VER >= 800)
        #pragma warning( disable : 4505 ) /* Utterly useless warning */  
        #pragma warning( disable : 4705 ) /* Thinks constructors have no effect */
        #pragma warning( disable : 4127 ) /* Doesn't like 'while (TRUE)' */  
        #pragma warning( disable : 4201 ) /* Nameless struct/union */  
        #pragma warning( disable : 4214 ) /* Doesn't like unsigned bitfields */  
    #endif

    #if defined(_WIN64)

        #define __64BIT__
        #define __MSOFT_WIN64__
        #define __WINDOWS__
        #define __WIN64__

    #elif defined(_WIN32)

        #define __32BIT__
        #define __MSOFT_WIN32__
        #define __WINDOWS__
        #define __WIN32__

    #elif defined(_WINDOWS)

        #define __16BIT__
        #define __MSOFT_WIN16__
        #define __WINDOWS__
        #define __WIN16__

    #elif defined(MSDOS)

        #define __16BIT__
        #define __MSOFT_DOS16__
        #define __DOS16__
        #if !defined(__MSDOS__)
            #define __MSDOS__
        #endif

    #elif defined(_MT)

        #define __16BIT__
        #if !defined(__OS2__)
            #define __OS2__
        #endif
        #define __MSOFT_OS216__
        #define __OS216__

    #else

        #error Unknown Microsoft environment!

    #endif
#endif

/************************************/
/* Make sure we have an environment */
/************************************/

#if !defined(__MSC__) && !defined(__BORLANDC__) && !defined(__WATCOMC__)
    #error Unknown compiler!
#endif

#if !defined(__MSDOS__) && !defined(__OS2__) && !defined(__WINDOWS__)
    #error Unknown operating system/environment!
#endif

#if !defined(__16BIT__) && !defined(__32BIT__) && !defined(__64BIT__)
    #error Unknown integer word size!
#endif

#endif  /* _NCS_CENV_H */