include/begin_code.h
author Sam Lantinga <slouken@libsdl.org>
Thu, 28 Feb 2002 00:28:26 +0000
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Updated for Watcom C++ and LCC compilers
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Library General Public
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    License as published by the Free Software Foundation; either
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    version 2 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Library General Public License for more details.
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    You should have received a copy of the GNU Library General Public
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    License along with this library; if not, write to the Free
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    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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/* This file sets things up for C dynamic library function definitions,
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   static inlined functions, and structures aligned at 4-byte alignment.
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   If you don't like ugly C preprocessor code, don't look at this file. :)
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*/
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/* This shouldn't be nested -- included it around code only. */
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#ifdef _begin_code_h
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#error Nested inclusion of begin_code.h
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#endif
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#define _begin_code_h
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/* Some compilers use a special export keyword */
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#ifndef DECLSPEC
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# ifdef __BEOS__
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#  if defined(__GNUC__)
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#   define DECLSPEC	__declspec(dllexport)
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#  else
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#   define DECLSPEC	__declspec(export)
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#  endif
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# else
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# ifdef WIN32
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#  ifdef __BORLANDC__
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#   ifdef BUILD_SDL
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#    define DECLSPEC __declspec(dllexport)
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#   else
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#    define DECLSPEC __declspec(dllimport)
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#   endif
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#  else
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#   define DECLSPEC	__declspec(dllexport)
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#  endif
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# else
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#  define DECLSPEC
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# endif
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# endif
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#endif
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/* Removed DECLSPEC on Symbian OS because SDL cannot be a DLL in EPOC */
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#ifdef __SYMBIAN32__ 
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#undef DECLSPEC
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#define DECLSPEC
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#endif /* __SYMBIAN32__ */
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/* Force structure packing at 4 byte alignment.
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   This is necessary if the header is included in code which has structure
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   packing set to an alternate value, say for loading structures from disk.
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   The packing is reset to the previous value in close_code.h
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 */
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#if defined(_MSC_VER) || defined(__MWERKS__) || defined(__BORLANDC__)
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#ifdef _MSC_VER
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#pragma warning(disable: 4103)
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#endif
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#ifdef __BORLANDC__
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#pragma nopackwarning
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#endif
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#pragma pack(push,4)
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#elif (defined(__MWERKS__) && defined(macintosh))
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#pragma options align=mac68k4byte
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#pragma enumsalwaysint on
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#endif /* Compiler needs structure packing set */
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/* Set up compiler-specific options for inlining functions */
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#ifndef SDL_INLINE_OKAY
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#ifdef __GNUC__
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#define SDL_INLINE_OKAY
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#else
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/* Add any special compiler-specific cases here */
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#if defined(_MSC_VER) || defined(__BORLANDC__) || \
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    defined(__DMC__) || defined(__SC__) || \
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    defined(__WATCOMC__) || defined(__LCC__)
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#ifndef __inline__
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#define __inline__	__inline
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#endif
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#define SDL_INLINE_OKAY
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#else
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#if !defined(__MRC__) && !defined(_SGI_SOURCE)
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#define __inline__ inline
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#define SDL_INLINE_OKAY
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#endif /* Not a funky compiler */
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#endif /* Visual C++ */
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#endif /* GNU C */
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#endif /* SDL_INLINE_OKAY */
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/* If inlining isn't supported, remove "__inline__", turning static
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   inlined functions into static functions (resulting in code bloat
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   in all files which include the offending header files)
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*/
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#ifndef SDL_INLINE_OKAY
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#define __inline__
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#endif
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/* Apparently this is needed by several Windows compilers */
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#ifndef NULL
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#ifdef __cplusplus
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#define NULL 0
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#else
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#define NULL ((void *)0)
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#endif
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#endif /* NULL */