| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 Sam Lantinga |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Library General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2 of the License, or (at your option) any later version. |
| 9 | |
| 10 | This library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Library General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Library General Public |
| 16 | License along with this library; if not, write to the Free |
| 17 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | |
| 19 | Sam Lantinga |
| 20 | slouken@libsdl.org |
| 21 | */ |
| 22 | |
| 23 | /** |
| 24 | * @file begin_code.h |
| 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 | /** |
| 31 | * @file begin_code.h |
| 32 | * This shouldn't be nested -- included it around code only. |
| 33 | */ |
| 34 | #ifdef _begin_code_h |
| 35 | #error Nested inclusion of begin_code.h |
| 36 | #endif |
| 37 | #define _begin_code_h |
| 38 | |
| 39 | /** |
| 40 | * @def DECLSPEC |
| 41 | * Some compilers use a special export keyword |
| 42 | */ |
| 43 | #ifndef DECLSPEC |
| 44 | # if defined(__BEOS__) || defined(__HAIKU__) |
| 45 | # if defined(__GNUC__) |
| 46 | # define DECLSPEC __declspec(dllexport) |
| 47 | # else |
| 48 | # define DECLSPEC __declspec(export) |
| 49 | # endif |
| 50 | # elif defined(__WIN32__) |
| 51 | # ifdef __BORLANDC__ |
| 52 | # ifdef BUILD_SDL |
| 53 | # define DECLSPEC |
| 54 | # else |
| 55 | # define DECLSPEC __declspec(dllimport) |
| 56 | # endif |
| 57 | # else |
| 58 | # define DECLSPEC __declspec(dllexport) |
| 59 | # endif |
| 60 | # elif defined(__OS2__) |
| 61 | # ifdef __WATCOMC__ |
| 62 | # ifdef BUILD_SDL |
| 63 | # define DECLSPEC __declspec(dllexport) |
| 64 | # else |
| 65 | # define DECLSPEC |
| 66 | # endif |
| 67 | # elif defined (__GNUC__) && __GNUC__ < 4 |
| 68 | # /* Added support for GCC-EMX <v4.x */ |
| 69 | # /* this is needed for XFree86/OS2 developement */ |
| 70 | # /* F. Ambacher(anakor@snafu.de) 05.2008 */ |
| 71 | # ifdef BUILD_SDL |
| 72 | # define DECLSPEC __declspec(dllexport) |
| 73 | # else |
| 74 | # define DECLSPEC |
| 75 | # endif |
| 76 | # else |
| 77 | # define DECLSPEC |
| 78 | # endif |
| 79 | # else |
| 80 | # if defined(__GNUC__) && __GNUC__ >= 4 |
| 81 | # define DECLSPEC __attribute__ ((visibility("default"))) |
| 82 | # else |
| 83 | # define DECLSPEC |
| 84 | # endif |
| 85 | # endif |
| 86 | #endif |
| 87 | |
| 88 | /** |
| 89 | * @def SDLCALL |
| 90 | * By default SDL uses the C calling convention |
| 91 | */ |
| 92 | #ifndef SDLCALL |
| 93 | # if defined(__WIN32__) && !defined(__GNUC__) |
| 94 | # define SDLCALL __cdecl |
| 95 | # elif defined(__OS2__) |
| 96 | # if defined (__GNUC__) && __GNUC__ < 4 |
| 97 | # /* Added support for GCC-EMX <v4.x */ |
| 98 | # /* this is needed for XFree86/OS2 developement */ |
| 99 | # /* F. Ambacher(anakor@snafu.de) 05.2008 */ |
| 100 | # define SDLCALL _cdecl |
| 101 | # else |
| 102 | # /* On other compilers on OS/2, we use the _System calling convention */ |
| 103 | # /* to be compatible with every compiler */ |
| 104 | # define SDLCALL _System |
| 105 | # endif |
| 106 | # else |
| 107 | # define SDLCALL |
| 108 | # endif |
| 109 | #endif /* SDLCALL */ |
| 110 | |
| 111 | #ifdef __SYMBIAN32__ |
| 112 | #ifndef EKA2 |
| 113 | #undef DECLSPEC |
| 114 | #define DECLSPEC |
| 115 | #elif !defined(__WINS__) |
| 116 | #undef DECLSPEC |
| 117 | #define DECLSPEC __declspec(dllexport) |
| 118 | #endif /* !EKA2 */ |
| 119 | #endif /* __SYMBIAN32__ */ |
| 120 | |
| 121 | /** |
| 122 | * @file begin_code.h |
| 123 | * Force structure packing at 4 byte alignment. |
| 124 | * This is necessary if the header is included in code which has structure |
| 125 | * packing set to an alternate value, say for loading structures from disk. |
| 126 | * The packing is reset to the previous value in close_code.h |
| 127 | */ |
| 128 | #if defined(_MSC_VER) || defined(__MWERKS__) || defined(__BORLANDC__) |
| 129 | #ifdef _MSC_VER |
| 130 | #pragma warning(disable: 4103) |
| 131 | #endif |
| 132 | #ifdef __BORLANDC__ |
| 133 | #pragma nopackwarning |
| 134 | #endif |
| 135 | #pragma pack(push,4) |
| 136 | #elif (defined(__MWERKS__) && defined(__MACOS__)) |
| 137 | #pragma options align=mac68k4byte |
| 138 | #pragma enumsalwaysint on |
| 139 | #endif /* Compiler needs structure packing set */ |
| 140 | |
| 141 | /** |
| 142 | * @def SDL_INLINE_OKAY |
| 143 | * Set up compiler-specific options for inlining functions |
| 144 | */ |
| 145 | #ifndef SDL_INLINE_OKAY |
| 146 | #ifdef __GNUC__ |
| 147 | #define SDL_INLINE_OKAY |
| 148 | #else |
| 149 | /* Add any special compiler-specific cases here */ |
| 150 | #if defined(_MSC_VER) || defined(__BORLANDC__) || \ |
| 151 | defined(__DMC__) || defined(__SC__) || \ |
| 152 | defined(__WATCOMC__) || defined(__LCC__) || \ |
| 153 | defined(__DECC) || defined(__EABI__) |
| 154 | #ifndef __inline__ |
| 155 | #define __inline__ __inline |
| 156 | #endif |
| 157 | #define SDL_INLINE_OKAY |
| 158 | #else |
| 159 | #if !defined(__MRC__) && !defined(_SGI_SOURCE) |
| 160 | #ifndef __inline__ |
| 161 | #define __inline__ inline |
| 162 | #endif |
| 163 | #define SDL_INLINE_OKAY |
| 164 | #endif /* Not a funky compiler */ |
| 165 | #endif /* Visual C++ */ |
| 166 | #endif /* GNU C */ |
| 167 | #endif /* SDL_INLINE_OKAY */ |
| 168 | |
| 169 | /** |
| 170 | * @def __inline__ |
| 171 | * If inlining isn't supported, remove "__inline__", turning static |
| 172 | * inlined functions into static functions (resulting in code bloat |
| 173 | * in all files which include the offending header files) |
| 174 | */ |
| 175 | #ifndef SDL_INLINE_OKAY |
| 176 | #define __inline__ |
| 177 | #endif |
| 178 | |
| 179 | /** |
| 180 | * @def NULL |
| 181 | * Apparently this is needed by several Windows compilers |
| 182 | */ |
| 183 | #if !defined(__MACH__) |
| 184 | #ifndef NULL |
| 185 | #ifdef __cplusplus |
| 186 | #define NULL 0 |
| 187 | #else |
| 188 | #define NULL ((void *)0) |
| 189 | #endif |
| 190 | #endif /* NULL */ |
| 191 | #endif /* ! Mac OS X - breaks precompiled headers */ |