begin_code.h (4267B)
1/* 2 Simple DirectMedia Layer 3 Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org> 4 5 This software is provided 'as-is', without any express or implied 6 warranty. In no event will the authors be held liable for any damages 7 arising from the use of this software. 8 9 Permission is granted to anyone to use this software for any purpose, 10 including commercial applications, and to alter it and redistribute it 11 freely, subject to the following restrictions: 12 13 1. The origin of this software must not be misrepresented; you must not 14 claim that you wrote the original software. If you use this software 15 in a product, an acknowledgment in the product documentation would be 16 appreciated but is not required. 17 2. Altered source versions must be plainly marked as such, and must not be 18 misrepresented as being the original software. 19 3. This notice may not be removed or altered from any source distribution. 20*/ 21 22/** 23 * \file begin_code.h 24 * 25 * This file sets things up for C dynamic library function definitions, 26 * static inlined functions, and structures aligned at 4-byte alignment. 27 * If you don't like ugly C preprocessor code, don't look at this file. :) 28 */ 29 30/* This shouldn't be nested -- included it around code only. */ 31#ifdef _begin_code_h 32#error Nested inclusion of begin_code.h 33#endif 34#define _begin_code_h 35 36#ifndef SDL_DEPRECATED 37# if (__GNUC__ >= 4) /* technically, this arrived in gcc 3.1, but oh well. */ 38# define SDL_DEPRECATED __attribute__((deprecated)) 39# else 40# define SDL_DEPRECATED 41# endif 42#endif 43 44#ifndef SDL_UNUSED 45# ifdef __GNUC__ 46# define SDL_UNUSED __attribute__((unused)) 47# else 48# define SDL_UNUSED 49# endif 50#endif 51 52/* Some compilers use a special export keyword */ 53#ifndef DECLSPEC 54# if defined(__WIN32__) || defined(__WINRT__) 55# ifdef __BORLANDC__ 56# ifdef BUILD_SDL 57# define DECLSPEC 58# else 59# define DECLSPEC __declspec(dllimport) 60# endif 61# else 62# define DECLSPEC __declspec(dllexport) 63# endif 64# else 65# if defined(__GNUC__) && __GNUC__ >= 4 66# define DECLSPEC __attribute__ ((visibility("default"))) 67# elif defined(__GNUC__) && __GNUC__ >= 2 68# define DECLSPEC __declspec(dllexport) 69# else 70# define DECLSPEC 71# endif 72# endif 73#endif 74 75/* By default SDL uses the C calling convention */ 76#ifndef SDLCALL 77#if (defined(__WIN32__) || defined(__WINRT__)) && !defined(__GNUC__) 78#define SDLCALL __cdecl 79#else 80#define SDLCALL 81#endif 82#endif /* SDLCALL */ 83 84/* Removed DECLSPEC on Symbian OS because SDL cannot be a DLL in EPOC */ 85#ifdef __SYMBIAN32__ 86#undef DECLSPEC 87#define DECLSPEC 88#endif /* __SYMBIAN32__ */ 89 90/* Force structure packing at 4 byte alignment. 91 This is necessary if the header is included in code which has structure 92 packing set to an alternate value, say for loading structures from disk. 93 The packing is reset to the previous value in close_code.h 94 */ 95#if defined(_MSC_VER) || defined(__MWERKS__) || defined(__BORLANDC__) 96#ifdef _MSC_VER 97#pragma warning(disable: 4103) 98#endif 99#ifdef __BORLANDC__ 100#pragma nopackwarning 101#endif 102#ifdef _M_X64 103/* Use 8-byte alignment on 64-bit architectures, so pointers are aligned */ 104#pragma pack(push,8) 105#else 106#pragma pack(push,4) 107#endif 108#endif /* Compiler needs structure packing set */ 109 110#ifndef SDL_INLINE 111#if defined(__GNUC__) 112#define SDL_INLINE __inline__ 113#elif defined(_MSC_VER) || defined(__BORLANDC__) || \ 114 defined(__DMC__) || defined(__SC__) || \ 115 defined(__WATCOMC__) || defined(__LCC__) || \ 116 defined(__DECC) 117#define SDL_INLINE __inline 118#ifndef __inline__ 119#define __inline__ __inline 120#endif 121#else 122#define SDL_INLINE inline 123#ifndef __inline__ 124#define __inline__ inline 125#endif 126#endif 127#endif /* SDL_INLINE not defined */ 128 129#ifndef SDL_FORCE_INLINE 130#if defined(_MSC_VER) 131#define SDL_FORCE_INLINE __forceinline 132#elif ( (defined(__GNUC__) && (__GNUC__ >= 4)) || defined(__clang__) ) 133#define SDL_FORCE_INLINE __attribute__((always_inline)) static __inline__ 134#else 135#define SDL_FORCE_INLINE static SDL_INLINE 136#endif 137#endif /* SDL_FORCE_INLINE not defined */ 138 139/* Apparently this is needed by several Windows compilers */ 140#if !defined(__MACH__) 141#ifndef NULL 142#ifdef __cplusplus 143#define NULL 0 144#else 145#define NULL ((void *)0) 146#endif 147#endif /* NULL */ 148#endif /* ! Mac OS X - breaks precompiled headers */