1 /* 2 Simple DirectMedia Layer 3 Copyright (C) 1997-2016 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 # else 68 # define DECLSPEC 69 # endif 70 # endif 71 #endif 72 73 /* By default SDL uses the C calling convention */ 74 #ifndef SDLCALL 75 #if (defined(__WIN32__) || defined(__WINRT__)) && !defined(__GNUC__) 76 #define SDLCALL __cdecl 77 #else 78 #define SDLCALL 79 #endif 80 #endif /* SDLCALL */ 81 82 /* Removed DECLSPEC on Symbian OS because SDL cannot be a DLL in EPOC */ 83 #ifdef __SYMBIAN32__ 84 #undef DECLSPEC 85 #define DECLSPEC 86 #endif /* __SYMBIAN32__ */ 87 88 /* Force structure packing at 4 byte alignment. 89 This is necessary if the header is included in code which has structure 90 packing set to an alternate value, say for loading structures from disk. 91 The packing is reset to the previous value in close_code.h 92 */ 93 #if defined(_MSC_VER) || defined(__MWERKS__) || defined(__BORLANDC__) 94 #ifdef _MSC_VER 95 #pragma warning(disable: 4103) 96 #endif 97 #ifdef __BORLANDC__ 98 #pragma nopackwarning 99 #endif 100 #ifdef _M_X64 101 /* Use 8-byte alignment on 64-bit architectures, so pointers are aligned */ 102 #pragma pack(push,8) 103 #else 104 #pragma pack(push,4) 105 #endif 106 #endif /* Compiler needs structure packing set */ 107 108 #ifndef SDL_INLINE 109 #if defined(__GNUC__) 110 #define SDL_INLINE __inline__ 111 #elif defined(_MSC_VER) || defined(__BORLANDC__) || \ 112 defined(__DMC__) || defined(__SC__) || \ 113 defined(__WATCOMC__) || defined(__LCC__) || \ 114 defined(__DECC) 115 #define SDL_INLINE __inline 116 #ifndef __inline__ 117 #define __inline__ __inline 118 #endif 119 #else 120 #define SDL_INLINE inline 121 #ifndef __inline__ 122 #define __inline__ inline 123 #endif 124 #endif 125 #endif /* SDL_INLINE not defined */ 126 127 #ifndef SDL_FORCE_INLINE 128 #if defined(_MSC_VER) 129 #define SDL_FORCE_INLINE __forceinline 130 #elif ( (defined(__GNUC__) && (__GNUC__ >= 4)) || defined(__clang__) ) 131 #define SDL_FORCE_INLINE __attribute__((always_inline)) static __inline__ 132 #else 133 #define SDL_FORCE_INLINE static SDL_INLINE 134 #endif 135 #endif /* SDL_FORCE_INLINE not defined */ 136 137 /* Apparently this is needed by several Windows compilers */ 138 #if !defined(__MACH__) 139 #ifndef NULL 140 #ifdef __cplusplus 141 #define NULL 0 142 #else 143 #define NULL ((void *)0) 144 #endif 145 #endif /* NULL */ 146 #endif /* ! Mac OS X - breaks precompiled headers */ 147