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annotate src/SDL.c @ 1650:ee4f2d77206f
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| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 22 Apr 2006 19:50:23 +0000 |
| parents | dc6b59e925a2 |
| children | 782fd950bd46 c121d94672cb e85e65aec22f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
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6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 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 | |
|
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13 Lesser General Public License for more details. |
| 0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
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22 #include "SDL_config.h" |
| 0 | 23 |
| 24 /* Initialization code for SDL */ | |
| 25 | |
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26 #include "SDL.h" |
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27 #include "SDL_fatal.h" |
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28 #if !SDL_VIDEO_DISABLED |
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29 #include "video/SDL_leaks.h" |
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30 #endif |
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31 |
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32 #if SDL_THREAD_PTH |
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33 #include <pth.h> |
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34 #endif |
| 0 | 35 |
| 36 /* Initialization/Cleanup routines */ | |
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37 #if !SDL_JOYSTICK_DISABLED |
| 0 | 38 extern int SDL_JoystickInit(void); |
| 39 extern void SDL_JoystickQuit(void); | |
| 40 #endif | |
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41 #if !SDL_CDROM_DISABLED |
| 0 | 42 extern int SDL_CDROMInit(void); |
| 43 extern void SDL_CDROMQuit(void); | |
| 44 #endif | |
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45 #if !SDL_TIMERS_DISABLED |
| 0 | 46 extern void SDL_StartTicks(void); |
| 47 extern int SDL_TimerInit(void); | |
| 48 extern void SDL_TimerQuit(void); | |
| 49 #endif | |
| 50 | |
| 51 /* The current SDL version */ | |
| 52 static SDL_version version = | |
| 53 { SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL }; | |
| 54 | |
| 55 /* The initialized subsystems */ | |
| 56 static Uint32 SDL_initialized = 0; | |
| 57 static Uint32 ticks_started = 0; | |
| 58 | |
| 59 #ifdef CHECK_LEAKS | |
| 60 int surfaces_allocated = 0; | |
| 61 #endif | |
| 62 | |
| 63 int SDL_InitSubSystem(Uint32 flags) | |
| 64 { | |
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65 #if !SDL_VIDEO_DISABLED |
| 0 | 66 /* Initialize the video/event subsystem */ |
| 67 if ( (flags & SDL_INIT_VIDEO) && !(SDL_initialized & SDL_INIT_VIDEO) ) { | |
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68 if ( SDL_VideoInit(SDL_getenv("SDL_VIDEODRIVER"), |
| 0 | 69 (flags&SDL_INIT_EVENTTHREAD)) < 0 ) { |
| 70 return(-1); | |
| 71 } | |
| 72 SDL_initialized |= SDL_INIT_VIDEO; | |
| 73 } | |
| 74 #else | |
| 75 if ( flags & SDL_INIT_VIDEO ) { | |
| 76 SDL_SetError("SDL not built with video support"); | |
| 77 return(-1); | |
| 78 } | |
| 79 #endif | |
| 80 | |
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81 #if !SDL_AUDIO_DISABLED |
| 0 | 82 /* Initialize the audio subsystem */ |
| 83 if ( (flags & SDL_INIT_AUDIO) && !(SDL_initialized & SDL_INIT_AUDIO) ) { | |
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84 if ( SDL_AudioInit(SDL_getenv("SDL_AUDIODRIVER")) < 0 ) { |
| 0 | 85 return(-1); |
| 86 } | |
| 87 SDL_initialized |= SDL_INIT_AUDIO; | |
| 88 } | |
| 89 #else | |
| 90 if ( flags & SDL_INIT_AUDIO ) { | |
| 91 SDL_SetError("SDL not built with audio support"); | |
| 92 return(-1); | |
| 93 } | |
| 94 #endif | |
| 95 | |
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96 #if !SDL_TIMERS_DISABLED |
| 0 | 97 /* Initialize the timer subsystem */ |
| 98 if ( ! ticks_started ) { | |
| 99 SDL_StartTicks(); | |
| 100 ticks_started = 1; | |
| 101 } | |
| 102 if ( (flags & SDL_INIT_TIMER) && !(SDL_initialized & SDL_INIT_TIMER) ) { | |
| 103 if ( SDL_TimerInit() < 0 ) { | |
| 104 return(-1); | |
| 105 } | |
| 106 SDL_initialized |= SDL_INIT_TIMER; | |
| 107 } | |
| 108 #else | |
| 109 if ( flags & SDL_INIT_TIMER ) { | |
| 110 SDL_SetError("SDL not built with timer support"); | |
| 111 return(-1); | |
| 112 } | |
| 113 #endif | |
| 114 | |
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115 #if !SDL_JOYSTICK_DISABLED |
| 0 | 116 /* Initialize the joystick subsystem */ |
| 117 if ( (flags & SDL_INIT_JOYSTICK) && | |
| 118 !(SDL_initialized & SDL_INIT_JOYSTICK) ) { | |
| 119 if ( SDL_JoystickInit() < 0 ) { | |
| 120 return(-1); | |
| 121 } | |
| 122 SDL_initialized |= SDL_INIT_JOYSTICK; | |
| 123 } | |
| 124 #else | |
| 125 if ( flags & SDL_INIT_JOYSTICK ) { | |
| 126 SDL_SetError("SDL not built with joystick support"); | |
| 127 return(-1); | |
| 128 } | |
| 129 #endif | |
| 130 | |
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131 #if !SDL_CDROM_DISABLED |
| 0 | 132 /* Initialize the CD-ROM subsystem */ |
| 133 if ( (flags & SDL_INIT_CDROM) && !(SDL_initialized & SDL_INIT_CDROM) ) { | |
| 134 if ( SDL_CDROMInit() < 0 ) { | |
| 135 return(-1); | |
| 136 } | |
| 137 SDL_initialized |= SDL_INIT_CDROM; | |
| 138 } | |
| 139 #else | |
| 140 if ( flags & SDL_INIT_CDROM ) { | |
| 141 SDL_SetError("SDL not built with cdrom support"); | |
| 142 return(-1); | |
| 143 } | |
| 144 #endif | |
| 145 return(0); | |
| 146 } | |
| 147 | |
| 148 int SDL_Init(Uint32 flags) | |
| 149 { | |
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150 #if !SDL_THREADS_DISABLED && SDL_THREAD_PTH |
| 397 | 151 if (!pth_init()) { |
| 152 return -1; | |
| 153 } | |
| 154 #endif | |
| 155 | |
| 0 | 156 /* Clear the error message */ |
| 157 SDL_ClearError(); | |
| 158 | |
| 159 /* Initialize the desired subsystems */ | |
| 160 if ( SDL_InitSubSystem(flags) < 0 ) { | |
| 161 return(-1); | |
| 162 } | |
| 163 | |
| 164 /* Everything is initialized */ | |
| 165 if ( !(flags & SDL_INIT_NOPARACHUTE) ) { | |
| 166 SDL_InstallParachute(); | |
| 167 } | |
| 168 return(0); | |
| 169 } | |
| 170 | |
| 171 void SDL_QuitSubSystem(Uint32 flags) | |
| 172 { | |
| 173 /* Shut down requested initialized subsystems */ | |
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174 #if !SDL_CDROM_DISABLED |
| 0 | 175 if ( (flags & SDL_initialized & SDL_INIT_CDROM) ) { |
| 176 SDL_CDROMQuit(); | |
| 177 SDL_initialized &= ~SDL_INIT_CDROM; | |
| 178 } | |
| 179 #endif | |
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180 #if !SDL_JOYSTICK_DISABLED |
| 0 | 181 if ( (flags & SDL_initialized & SDL_INIT_JOYSTICK) ) { |
| 182 SDL_JoystickQuit(); | |
| 183 SDL_initialized &= ~SDL_INIT_JOYSTICK; | |
| 184 } | |
| 185 #endif | |
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186 #if !SDL_TIMERS_DISABLED |
| 0 | 187 if ( (flags & SDL_initialized & SDL_INIT_TIMER) ) { |
| 188 SDL_TimerQuit(); | |
| 189 SDL_initialized &= ~SDL_INIT_TIMER; | |
| 190 } | |
| 191 #endif | |
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192 #if !SDL_AUDIO_DISABLED |
| 0 | 193 if ( (flags & SDL_initialized & SDL_INIT_AUDIO) ) { |
| 194 SDL_AudioQuit(); | |
| 195 SDL_initialized &= ~SDL_INIT_AUDIO; | |
| 196 } | |
| 197 #endif | |
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198 #if !SDL_VIDEO_DISABLED |
| 0 | 199 if ( (flags & SDL_initialized & SDL_INIT_VIDEO) ) { |
| 200 SDL_VideoQuit(); | |
| 201 SDL_initialized &= ~SDL_INIT_VIDEO; | |
| 202 } | |
| 203 #endif | |
| 204 } | |
| 205 | |
| 206 Uint32 SDL_WasInit(Uint32 flags) | |
| 207 { | |
| 208 if ( ! flags ) { | |
| 209 flags = SDL_INIT_EVERYTHING; | |
| 210 } | |
| 211 return (SDL_initialized&flags); | |
| 212 } | |
| 213 | |
| 214 void SDL_Quit(void) | |
| 215 { | |
| 216 /* Quit all subsystems */ | |
| 1190 | 217 #ifdef DEBUG_BUILD |
| 218 printf("[SDL_Quit] : Enter! Calling QuitSubSystem()\n"); fflush(stdout); | |
| 219 #endif | |
| 0 | 220 SDL_QuitSubSystem(SDL_INIT_EVERYTHING); |
| 221 | |
| 222 #ifdef CHECK_LEAKS | |
| 1190 | 223 #ifdef DEBUG_BUILD |
| 224 printf("[SDL_Quit] : CHECK_LEAKS\n"); fflush(stdout); | |
| 225 #endif | |
| 226 | |
| 0 | 227 /* Print the number of surfaces not freed */ |
| 228 if ( surfaces_allocated != 0 ) { | |
| 229 fprintf(stderr, "SDL Warning: %d SDL surfaces extant\n", | |
| 230 surfaces_allocated); | |
| 231 } | |
| 232 #endif | |
| 1190 | 233 #ifdef DEBUG_BUILD |
| 234 printf("[SDL_Quit] : SDL_UninstallParachute()\n"); fflush(stdout); | |
| 235 #endif | |
| 0 | 236 |
| 237 /* Uninstall any parachute signal handlers */ | |
| 238 SDL_UninstallParachute(); | |
| 397 | 239 |
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240 #if !SDL_THREADS_DISABLED && SDL_THREAD_PTH |
| 397 | 241 pth_kill(); |
| 242 #endif | |
| 1190 | 243 #ifdef DEBUG_BUILD |
| 244 printf("[SDL_Quit] : Returning!\n"); fflush(stdout); | |
| 245 #endif | |
| 246 | |
| 0 | 247 } |
| 248 | |
| 249 /* Return the library version number */ | |
| 250 const SDL_version * SDL_Linked_Version(void) | |
| 251 { | |
| 252 return(&version); | |
| 253 } | |
| 254 | |
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255 #if defined(__OS2__) |
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256 /* Building for OS/2 */ |
| 1190 | 257 #ifdef __WATCOMC__ |
| 258 | |
| 259 #define INCL_DOSERRORS | |
| 260 #define INCL_DOSEXCEPTIONS | |
| 261 #include <os2.h> | |
| 262 | |
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263 /* Exception handler to prevent the Audio thread hanging, making a zombie process! */ |
| 1190 | 264 ULONG _System SDL_Main_ExceptionHandler(PEXCEPTIONREPORTRECORD pERepRec, |
| 265 PEXCEPTIONREGISTRATIONRECORD pERegRec, | |
| 266 PCONTEXTRECORD pCtxRec, | |
| 267 PVOID p) | |
| 268 { | |
| 269 if (pERepRec->fHandlerFlags & EH_EXIT_UNWIND) | |
| 270 return XCPT_CONTINUE_SEARCH; | |
| 271 if (pERepRec->fHandlerFlags & EH_UNWINDING) | |
| 272 return XCPT_CONTINUE_SEARCH; | |
| 273 if (pERepRec->fHandlerFlags & EH_NESTED_CALL) | |
| 274 return XCPT_CONTINUE_SEARCH; | |
| 275 | |
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276 /* Do cleanup at every fatal exception! */ |
| 1190 | 277 if (((pERepRec->ExceptionNum & XCPT_SEVERITY_CODE) == XCPT_FATAL_EXCEPTION) && |
| 278 (pERepRec->ExceptionNum != XCPT_BREAKPOINT) && | |
| 279 (pERepRec->ExceptionNum != XCPT_SINGLE_STEP) | |
| 280 ) | |
| 281 { | |
| 282 if (SDL_initialized & SDL_INIT_AUDIO) | |
| 283 { | |
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284 /* This removes the zombie audio thread in case of emergency. */ |
| 1190 | 285 #ifdef DEBUG_BUILD |
| 286 printf("[SDL_Main_ExceptionHandler] : Calling SDL_CloseAudio()!\n"); | |
| 287 #endif | |
| 288 SDL_CloseAudio(); | |
| 289 } | |
| 290 } | |
| 291 return (XCPT_CONTINUE_SEARCH); | |
| 292 } | |
| 293 | |
| 294 | |
| 295 EXCEPTIONREGISTRATIONRECORD SDL_Main_xcpthand = {0, SDL_Main_ExceptionHandler}; | |
| 296 | |
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297 /* The main DLL entry for DLL Initialization and Uninitialization: */ |
| 1190 | 298 unsigned _System LibMain(unsigned hmod, unsigned termination) |
| 299 { | |
| 300 if (termination) | |
| 301 { | |
| 302 #ifdef DEBUG_BUILD | |
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303 /* printf("[SDL DLL Unintialization] : Removing exception handler\n"); */ |
| 1190 | 304 #endif |
| 305 DosUnsetExceptionHandler(&SDL_Main_xcpthand); | |
| 306 return 1; | |
| 307 } else | |
| 308 { | |
| 309 #ifdef DEBUG_BUILD | |
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310 /* Make stdout and stderr unbuffered! */ |
| 1190 | 311 setbuf(stdout, NULL); |
| 312 setbuf(stderr, NULL); | |
| 313 #endif | |
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314 /* Fire up exception handler */ |
| 1190 | 315 #ifdef DEBUG_BUILD |
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316 /* printf("[SDL DLL Initialization] : Setting exception handler\n"); */ |
| 1190 | 317 #endif |
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318 /* Set exception handler */ |
| 1190 | 319 DosSetExceptionHandler(&SDL_Main_xcpthand); |
| 320 | |
| 321 return 1; | |
| 322 } | |
| 323 } | |
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324 #endif /* __WATCOMC__ */ |
| 1190 | 325 |
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326 #elif defined(__WIN32__) |
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327 |
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328 #if !defined(HAVE_LIBC) || (defined(__WATCOMC__) && defined(BUILD_DLL)) |
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329 /* Need to include DllMain() on Watcom C for some reason.. */ |
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330 #define WIN32_LEAN_AND_MEAN |
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331 #include <windows.h> |
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332 |
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333 BOOL APIENTRY _DllMainCRTStartup( HANDLE hModule, |
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334 DWORD ul_reason_for_call, |
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Sam Lantinga <slouken@libsdl.org>
parents:
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335 LPVOID lpReserved ) |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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336 { |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
1312
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337 switch (ul_reason_for_call) { |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
1312
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338 case DLL_PROCESS_ATTACH: |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
1312
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changeset
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339 case DLL_THREAD_ATTACH: |
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450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
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340 case DLL_THREAD_DETACH: |
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450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
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341 case DLL_PROCESS_DETACH: |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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342 break; |
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450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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343 } |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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344 return TRUE; |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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345 } |
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1465
8dfa9a6d69a5
Updated WinCE support by Dmitry (with some tweaks)
Sam Lantinga <slouken@libsdl.org>
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346 #endif /* building DLL with Watcom C */ |
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1330
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
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347 |
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1402
d910939febfa
Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
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348 #endif /* OS/2 elif __WIN32__ */ |