begin_code.h
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上传日期:2022-06-22
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文件大小:4k
- /*
- SDL - Simple DirectMedia Layer
- Copyright (C) 1997-2004 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
- */
- /* 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. :)
- */
- /* 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
- /* Some compilers use a special export keyword */
- #ifndef DECLSPEC
- # if defined(__BEOS__)
- # if defined(__GNUC__)
- # define DECLSPEC __declspec(dllexport)
- # 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 __WATCOMC__
- # ifdef BUILD_SDL
- # define DECLSPEC __declspec(dllexport)
- # else
- # define DECLSPEC
- # endif
- # else
- # define DECLSPEC
- # endif
- # else
- # if defined(__GNUC__) && __GNUC__ >= 4
- # define DECLSPEC __attribute__ ((visibility("default")))
- # else
- # define DECLSPEC
- # endif
- # endif
- #endif
- /* By default SDL uses the C calling convention */
- #ifndef SDLCALL
- #if defined(__WIN32__) && !defined(__GNUC__)
- #define SDLCALL __cdecl
- #else
- #ifdef __OS2__
- /* But on OS/2, we use the _System calling convention */
- /* to be compatible with every compiler */
- #define SDLCALL _System
- #else
- #define SDLCALL
- #endif
- #endif
- #endif /* SDLCALL */
- #ifdef __SYMBIAN32__
- #ifndef EKA2
- #undef DECLSPEC
- #define DECLSPEC
- #elif !defined(__WINS__)
- #undef DECLSPEC
- #define DECLSPEC __declspec(dllexport)
- #endif /* !EKA2 */
- #endif /* __SYMBIAN32__ */
- /* 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
- #pragma pack(push,4)
- #elif (defined(__MWERKS__) && defined(__MACOS__))
- #pragma options align=mac68k4byte
- #pragma enumsalwaysint on
- #endif /* Compiler needs structure packing set */
- /* 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 */
- /* 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
- /* 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 */