/*

SDL - Simple DirectMedia Layer

Copyright (C) 1997-2012 Sam Lantinga

This library is free software; you can redistribute it and/or

modify it under the terms of the GNU Library General Public

License as published by the Free Software Foundation; either

version 2 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

Library General Public License for more details.

You should have received a copy of the GNU Library General Public

License along with this library; if not, write to the Free

Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

Sam Lantinga

slouken@libsdl.org

*/

/**

* @file begin_code.h

* This file sets things up for C dynamic library function definitions,

* static inlined functions, and structures aligned at 4-byte alignment.

* If you don't like ugly C preprocessor code, don't look at this file. :)

*/

/**

* @file begin_code.h

* This shouldn't be nested -- included it around code only.

*/

#ifdef _begin_code_h

#error Nested inclusion of begin_code.h

#endif

#define _begin_code_h

/**

* @def DECLSPEC

* Some compilers use a special export keyword

*/

#ifndef DECLSPEC

# if defined(__BEOS__) || defined(__HAIKU__)

# if defined(__GNUC__)

# define DECLSPEC

# else

# define DECLSPEC __declspec(export)

# endif

# elif defined(__WIN32__)

# ifdef __BORLANDC__

# ifdef BUILD_SDL

# define DECLSPEC

# else

# define DECLSPEC __declspec(dllimport)

# endif

# else

# define DECLSPEC __declspec(dllexport)

# endif

# elif defined(__OS2__)

# ifdef BUILD_SDL

# define DECLSPEC __declspec(dllexport)

# else

# define DECLSPEC

# endif

# else

# if defined(__GNUC__) && __GNUC__ >= 4

# define DECLSPEC __attribute__ ((visibility("default")))

# else

# define DECLSPEC

# endif

# endif

#endif

/**

* @def SDLCALL

* By default SDL uses the C calling convention

*/

#ifndef SDLCALL

# if defined(__WIN32__) && !defined(__GNUC__)

# define SDLCALL __cdecl

# elif defined(__OS2__)

/* But on OS/2, we use the _System calling convention */

/* to be compatible with every compiler */

# if defined (__GNUC__) && !defined(_System)

# define _System /* For compatibility with old GCC/EMX */

# endif

# define SDLCALL _System

# else

# define SDLCALL

# endif

#endif /* SDLCALL */

#ifdef __SYMBIAN32__

#ifndef EKA2

#undef DECLSPEC

#define DECLSPEC

#elif !defined(__WINS__)

#undef DECLSPEC

#define DECLSPEC __declspec(dllexport)

#endif /* !EKA2 */

#endif /* __SYMBIAN32__ */

/**

* @file begin_code.h

* Force structure packing at 4 byte alignment.

* This is necessary if the header is included in code which has structure

* packing set to an alternate value, say for loading structures from disk.

* The packing is reset to the previous value in close_code.h

*/

#if defined(_MSC_VER) || defined(__MWERKS__) || defined(__BORLANDC__)

#ifdef _MSC_VER

#pragma warning(disable: 4103)

#endif

#ifdef __BORLANDC__

#pragma nopackwarning

#endif

#ifdef _M_X64

/* Use 8-byte alignment on 64-bit architectures, so pointers are aligned */

#pragma pack(push,8)

#else

#pragma pack(push,4)

#endif

#elif (defined(__MWERKS__) && defined(__MACOS__))

#pragma options align=mac68k4byte

#pragma enumsalwaysint on

#endif /* Compiler needs structure packing set */

/**

* @def SDL_INLINE_OKAY

* Set up compiler-specific options for inlining functions

*/

#ifndef SDL_INLINE_OKAY

#ifdef __GNUC__

#define SDL_INLINE_OKAY

#else

/* Add any special compiler-specific cases here */

#if defined(_MSC_VER) || defined(__BORLANDC__) || \

defined(__DMC__) || defined(__SC__) || \

defined(__WATCOMC__) || defined(__LCC__) || \

defined(__DECC) || defined(__EABI__)

#ifndef __inline__

#define __inline__ __inline

#endif

#define SDL_INLINE_OKAY

#else

#if !defined(__MRC__) && !defined(_SGI_SOURCE)

#ifndef __inline__

#define __inline__ inline

#endif

#define SDL_INLINE_OKAY

#endif /* Not a funky compiler */

#endif /* Visual C++ */

#endif /* GNU C */

#endif /* SDL_INLINE_OKAY */

/**

* @def __inline__

* If inlining isn't supported, remove "__inline__", turning static

* inlined functions into static functions (resulting in code bloat

* in all files which include the offending header files)

*/

#ifndef SDL_INLINE_OKAY

#define __inline__

#endif

/**

* @def NULL

* Apparently this is needed by several Windows compilers

*/

#if !defined(__MACH__)

#ifndef NULL

#ifdef __cplusplus

#define NULL 0

#else

#define NULL ((void *)0)

#endif

#endif /* NULL */

#endif /* ! Mac OS X - breaks precompiled headers */