SV platform dependency builds

#ifndef PA_ENDIANNESS_H

#define PA_ENDIANNESS_H

/*

 * $Id$

 * Portable Audio I/O Library current platform endianness macros

 *

 * Based on the Open Source API proposed by Ross Bencina

 * Copyright (c) 1999-2002 Phil Burk, Ross Bencina

 *

 * Permission is hereby granted, free of charge, to any person obtaining

 * a copy of this software and associated documentation files

 * (the "Software"), to deal in the Software without restriction,

 * including without limitation the rights to use, copy, modify, merge,

 * publish, distribute, sublicense, and/or sell copies of the Software,

 * and to permit persons to whom the Software is furnished to do so,

 * subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be

 * included in all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR

 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF

 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

 */

/*

 * The text above constitutes the entire PortAudio license; however, 

 * the PortAudio community also makes the following non-binding requests:

 *

 * Any person wishing to distribute modifications to the Software is

 * requested to send the modifications to the original developer so that

 * they can be incorporated into the canonical version. It is also 

 * requested that these non-binding requests be included along with the 

 * license above.

 */

/** @file

 @ingroup common_src

 @brief Configure endianness symbols for the target processor.

 Arrange for either the PA_LITTLE_ENDIAN or PA_BIG_ENDIAN preprocessor symbols

 to be defined. The one that is defined reflects the endianness of the target

 platform and may be used to implement conditional compilation of byte-order

 dependent code.

 If either PA_LITTLE_ENDIAN or PA_BIG_ENDIAN is defined already, then no attempt

 is made to override that setting. This may be useful if you have a better way

 of determining the platform's endianness. The autoconf mechanism uses this for

 example.

 A PA_VALIDATE_ENDIANNESS macro is provided to compare the compile time

 and runtime endiannes and raise an assertion if they don't match.

*/

#ifdef __cplusplus

extern "C"

{

#endif /* __cplusplus */

/* If this is an apple, we need to do detect endianness this way */

#if defined(__APPLE__)

    /* we need to do some endian detection that is sensitive to harware arch */

    #if defined(__LITTLE_ENDIAN__)

       #if !defined( PA_LITTLE_ENDIAN )

          #define PA_LITTLE_ENDIAN

       #endif

       #if defined( PA_BIG_ENDIAN )

          #undef PA_BIG_ENDIAN

       #endif

    #else

       #if !defined( PA_BIG_ENDIAN )

          #define PA_BIG_ENDIAN

       #endif

       #if defined( PA_LITTLE_ENDIAN )

          #undef PA_LITTLE_ENDIAN

       #endif

    #endif

#else

    /* this is not an apple, so first check the existing defines, and, failing that,

       detect well-known architechtures. */

    #if defined(PA_LITTLE_ENDIAN) || defined(PA_BIG_ENDIAN)

        /* endianness define has been set externally, such as by autoconf */

        #if defined(PA_LITTLE_ENDIAN) && defined(PA_BIG_ENDIAN)

        #error both PA_LITTLE_ENDIAN and PA_BIG_ENDIAN have been defined externally to pa_endianness.h - only one endianness at a time please

        #endif

    #else

        /* endianness define has not been set externally */

        /* set PA_LITTLE_ENDIAN or PA_BIG_ENDIAN by testing well known platform specific defines */

        #if defined(WIN32) || defined(_WIN32) || defined(__WIN32__) || defined(__NT__) || defined(LITTLE_ENDIAN) || defined(__i386) || defined(_M_IX86) || defined(__x86_64__)

            #define PA_LITTLE_ENDIAN /* win32, assume intel byte order */

        #else

            #define PA_BIG_ENDIAN

        #endif

    #endif

    #if !defined(PA_LITTLE_ENDIAN) && !defined(PA_BIG_ENDIAN)

        /*

         If the following error is raised, you either need to modify the code above

         to automatically determine the endianness from other symbols defined on your

         platform, or define either PA_LITTLE_ENDIAN or PA_BIG_ENDIAN externally.

        */

        #error pa_endianness.h was unable to automatically determine the endianness of the target platform

    #endif

#endif

/* PA_VALIDATE_ENDIANNESS compares the compile time and runtime endianness,

 and raises an assertion if they don't match. <assert.h> must be included in

 the context in which this macro is used.

*/

#if defined(NDEBUG)

    #define PA_VALIDATE_ENDIANNESS

#else

    #if defined(PA_LITTLE_ENDIAN)

        #define PA_VALIDATE_ENDIANNESS \

        { \

            const long nativeOne = 1; \

            assert( "PortAudio: compile time and runtime endianness don't match" && (((char *)&nativeOne)[0]) == 1 ); \

        }

    #elif defined(PA_BIG_ENDIAN)

        #define PA_VALIDATE_ENDIANNESS \

        { \

            const long nativeOne = 1; \

            assert( "PortAudio: compile time and runtime endianness don't match" && (((char *)&nativeOne)[0]) == 0 ); \

        }

    #endif

#endif

#ifdef __cplusplus

}

#endif /* __cplusplus */

#endif /* PA_ENDIANNESS_H */