1 /*
2  * Copyright (C) 2006, 2007, 2008, 2009, 2013 Apple Inc. All rights reserved.
3  * Copyright (C) 2007-2009 Torch Mobile, Inc.
4  * Copyright (C) 2010, 2011 Research In Motion Limited. All rights reserved.
5  * Copyright (C) 2018 The Qt Company Ltd.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
17  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
20  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
21  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
23  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
24  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  */
28 
29 #ifndef WTF_Platform_h
30 #define WTF_Platform_h
31 
32 #if defined(__cplusplus)
33 #include <private/qv4global_p.h>
34 #endif
35 
36 /* Include compiler specific macros */
37 #include <wtf/Compiler.h>
38 
39 /* ==== PLATFORM handles OS, operating environment, graphics API, and
40    CPU. This macro will be phased out in favor of platform adaptation
41    macros, policy decision macros, and top-level port definitions. ==== */
42 #define PLATFORM(WTF_FEATURE) WTF_PLATFORM_##WTF_FEATURE
43 
44 
45 /* ==== Platform adaptation macros: these describe properties of the target environment. ==== */
46 
47 /* CPU() - the target CPU architecture */
48 #define CPU(WTF_FEATURE) WTF_CPU_##WTF_FEATURE
49 /* HAVE() - specific system features (headers, functions or similar) that are present or not */
50 #define HAVE(WTF_FEATURE) HAVE_##WTF_FEATURE
51 /* OS() - underlying operating system; only to be used for mandated low-level services like
52    virtual memory, not to choose a GUI toolkit */
53 #define OS(WTF_FEATURE) WTF_OS_##WTF_FEATURE
54 
55 
56 /* ==== Policy decision macros: these define policy choices for a particular port. ==== */
57 
58 /* USE() - use a particular third-party library or optional OS service */
59 #define USE(WTF_FEATURE) WTF_USE_##WTF_FEATURE
60 /* ENABLE() - turn on a specific feature of WebKit */
61 #define ENABLE(WTF_FEATURE) ENABLE_##WTF_FEATURE
62 
63 
64 /* ==== CPU() - the target CPU architecture ==== */
65 
66 /* This also defines CPU(BIG_ENDIAN) or CPU(MIDDLE_ENDIAN) or neither, as appropriate. */
67 
68 /* CPU(ALPHA) - DEC Alpha */
69 #if defined(__alpha__)
70 #define WTF_CPU_ALPHA 1
71 #endif
72 
73 /* CPU(IA64) - Itanium / IA-64 */
74 #if defined(__ia64__)
75 #define WTF_CPU_IA64 1
76 /* 32-bit mode on Itanium */
77 #if !defined(__LP64__)
78 #define WTF_CPU_IA64_32 1
79 #endif
80 #endif
81 
82 /* CPU(MIPS) - MIPS 32-bit */
83 /* Note: Only O32 ABI is tested, so we enable it for O32 ABI for now.  */
84 #if (defined(mips) || defined(__mips__) || defined(MIPS) || defined(_MIPS_)) \
85     && defined(_ABIO32)
86 #define WTF_CPU_MIPS 1
87 #if defined(__MIPSEB__)
88 #define WTF_CPU_BIG_ENDIAN 1
89 #endif
90 #define WTF_MIPS_PIC (defined __PIC__)
91 #define WTF_MIPS_ARCH __mips
92 #define WTF_MIPS_ISA(v) (defined WTF_MIPS_ARCH && WTF_MIPS_ARCH == v)
93 #define WTF_MIPS_ISA_AT_LEAST(v) (defined WTF_MIPS_ARCH && WTF_MIPS_ARCH >= v)
94 #define WTF_MIPS_ARCH_REV __mips_isa_rev
95 #define WTF_MIPS_ISA_REV(v) (defined WTF_MIPS_ARCH_REV && WTF_MIPS_ARCH_REV == v)
96 #define WTF_MIPS_DOUBLE_FLOAT (defined __mips_hard_float && !defined __mips_single_float)
97 #define WTF_MIPS_FP64 (defined __mips_fpr && __mips_fpr == 64)
98 /* MIPS requires allocators to use aligned memory */
99 #define WTF_USE_ARENA_ALLOC_ALIGNMENT_INTEGER 1
100 #endif /* MIPS */
101 
102 /* CPU(PPC) - PowerPC 32-bit */
103 #if   defined(__ppc__)     \
104     || defined(__PPC__)     \
105     || defined(__powerpc__) \
106     || defined(__powerpc)   \
107     || defined(__POWERPC__) \
108     || defined(_M_PPC)      \
109     || defined(__PPC)
110 #define WTF_CPU_PPC 1
111 #define WTF_CPU_BIG_ENDIAN 1
112 #endif
113 
114 /* CPU(PPC64) - PowerPC 64-bit */
115 #if   defined(__ppc64__) \
116     || defined(__PPC64__)
117 #define WTF_CPU_PPC64 1
118 #define WTF_CPU_BIG_ENDIAN 1
119 #endif
120 
121 /* CPU(SH4) - SuperH SH-4 */
122 #if defined(__SH4__)
123 #define WTF_CPU_SH4 1
124 #endif
125 
126 /* CPU(SPARC32) - SPARC 32-bit */
127 #if defined(__sparc) && !defined(__arch64__) || defined(__sparcv8)
128 #define WTF_CPU_SPARC32 1
129 #define WTF_CPU_BIG_ENDIAN 1
130 #endif
131 
132 /* CPU(SPARC64) - SPARC 64-bit */
133 #if defined(__sparc__) && defined(__arch64__) || defined (__sparcv9)
134 #define WTF_CPU_SPARC64 1
135 #define WTF_CPU_BIG_ENDIAN 1
136 #endif
137 
138 /* CPU(SPARC) - any SPARC, true for CPU(SPARC32) and CPU(SPARC64) */
139 #if CPU(SPARC32) || CPU(SPARC64)
140 #define WTF_CPU_SPARC 1
141 #endif
142 
143 /* CPU(S390X) - S390 64-bit */
144 #if defined(__s390x__)
145 #define WTF_CPU_S390X 1
146 #define WTF_CPU_BIG_ENDIAN 1
147 #endif
148 
149 /* CPU(S390) - S390 32-bit */
150 #if defined(__s390__)
151 #define WTF_CPU_S390 1
152 #define WTF_CPU_BIG_ENDIAN 1
153 #endif
154 
155 /* CPU(X86) - i386 / x86 32-bit */
156 #if   defined(__i386__) \
157     || defined(i386)     \
158     || defined(_M_IX86)  \
159     || defined(_X86_)    \
160     || defined(__THW_INTEL)
161 #define WTF_CPU_X86 1
162 #endif
163 
164 /* CPU(X86_64) - AMD64 / Intel64 / x86_64 64-bit */
165 #if   defined(__x86_64__) \
166     || defined(_M_X64)
167 #define WTF_CPU_X86_64 1
168 #endif
169 
170 /* CPU(ARM64) - Apple */
171 #if (defined(__arm64__) && defined(__APPLE__)) || defined(__aarch64__)
172 #define WTF_CPU_ARM64 1
173 #endif
174 
175 /* CPU(ARM64) - INTEGRITY */
176 #if (defined(__ARM64__))
177 #define WTF_CPU_ARM64 1
178 #endif
179 
180 /* CPU(ARM) - ARM, any version*/
181 #define WTF_ARM_ARCH_AT_LEAST(N) (CPU(ARM) && WTF_ARM_ARCH_VERSION >= N)
182 
183 #if   defined(arm) \
184     || defined(__arm__) \
185     || defined(ARM) \
186     || defined(_ARM_)
187 #define WTF_CPU_ARM 1
188 
189 #if defined(__ARM_PCS_VFP)
190 #define WTF_CPU_ARM_HARDFP 1
191 #endif
192 
193 #if defined(__ARMEB__) || (COMPILER(RVCT) && defined(__BIG_ENDIAN))
194 #define WTF_CPU_BIG_ENDIAN 1
195 
196 #elif !defined(__ARM_EABI__) \
197     && !defined(__EABI__) \
198     && !defined(__VFP_FP__) \
199     && !defined(_WIN32_WCE)
200 #define WTF_CPU_MIDDLE_ENDIAN 1
201 
202 #endif
203 
204 /* Set WTF_ARM_ARCH_VERSION */
205 #if   defined(__ARM_ARCH_4__) \
206     || defined(__ARM_ARCH_4T__) \
207     || defined(__MARM_ARMV4__)
208 #define WTF_ARM_ARCH_VERSION 4
209 
210 #elif defined(__ARM_ARCH_5__) \
211     || defined(__ARM_ARCH_5T__) \
212     || defined(__MARM_ARMV5__)
213 #define WTF_ARM_ARCH_VERSION 5
214 
215 #elif defined(__ARM_ARCH_5E__) \
216     || defined(__ARM_ARCH_5TE__) \
217     || defined(__ARM_ARCH_5TEJ__)
218 #define WTF_ARM_ARCH_VERSION 5
219 /*ARMv5TE requires allocators to use aligned memory*/
220 #define WTF_USE_ARENA_ALLOC_ALIGNMENT_INTEGER 1
221 
222 #elif defined(__ARM_ARCH_6__) \
223     || defined(__ARM_ARCH_6J__) \
224     || defined(__ARM_ARCH_6K__) \
225     || defined(__ARM_ARCH_6KZ__) \
226     || defined(__ARM_ARCH_6Z__) \
227     || defined(__ARM_ARCH_6ZK__) \
228     || defined(__ARM_ARCH_6T2__) \
229     || defined(__ARMV6__)
230 #define WTF_ARM_ARCH_VERSION 6
231 
232 #elif defined(__ARM_ARCH_7A__) \
233     || defined(__ARM_ARCH_7R__) \
234     || defined(__ARM_ARCH_7S__) \
235     || defined(__CORE_CORTEXA__) // GHS-specific
236 #define WTF_ARM_ARCH_VERSION 7
237 
238 /* MSVC sets _M_ARM */
239 #elif defined(_M_ARM)
240 #define WTF_ARM_ARCH_VERSION _M_ARM
241 
242 /* RVCT sets _TARGET_ARCH_ARM */
243 #elif defined(__TARGET_ARCH_ARM)
244 #define WTF_ARM_ARCH_VERSION __TARGET_ARCH_ARM
245 
246 #if defined(__TARGET_ARCH_5E) \
247     || defined(__TARGET_ARCH_5TE) \
248     || defined(__TARGET_ARCH_5TEJ)
249 /*ARMv5TE requires allocators to use aligned memory*/
250 #define WTF_USE_ARENA_ALLOC_ALIGNMENT_INTEGER 1
251 #endif
252 
253 #else
254 #define WTF_ARM_ARCH_VERSION 0
255 
256 #endif
257 
258 /* Set WTF_THUMB_ARCH_VERSION */
259 #if   defined(__ARM_ARCH_4T__)
260 #define WTF_THUMB_ARCH_VERSION 1
261 
262 #elif defined(__ARM_ARCH_5T__) \
263     || defined(__ARM_ARCH_5TE__) \
264     || defined(__ARM_ARCH_5TEJ__)
265 #define WTF_THUMB_ARCH_VERSION 2
266 
267 #elif defined(__ARM_ARCH_6J__) \
268     || defined(__ARM_ARCH_6K__) \
269     || defined(__ARM_ARCH_6Z__) \
270     || defined(__ARM_ARCH_6ZK__) \
271     || defined(__ARM_ARCH_6M__)
272 #define WTF_THUMB_ARCH_VERSION 3
273 
274 #elif defined(__ARM_ARCH_6T2__) \
275     || defined(__ARM_ARCH_7__) \
276     || defined(__ARM_ARCH_7A__) \
277     || defined(__ARM_ARCH_7M__) \
278     || defined(__ARM_ARCH_7R__) \
279     || defined(__ARM_ARCH_7S__) \
280     || defined(__CORE_CORTEXA__) // GHS-specific
281 #define WTF_THUMB_ARCH_VERSION 4
282 
283 /* RVCT sets __TARGET_ARCH_THUMB */
284 #elif defined(__TARGET_ARCH_THUMB)
285 #define WTF_THUMB_ARCH_VERSION __TARGET_ARCH_THUMB
286 
287 #else
288 #define WTF_THUMB_ARCH_VERSION 0
289 #endif
290 
291 
292 /* CPU(ARMV5_OR_LOWER) - ARM instruction set v5 or earlier */
293 /* On ARMv5 and below the natural alignment is required.
294    And there are some other differences for v5 or earlier. */
295 #if !defined(ARMV5_OR_LOWER) && !WTF_ARM_ARCH_AT_LEAST(6)
296 #define WTF_CPU_ARMV5_OR_LOWER 1
297 #endif
298 
299 
300 /* CPU(ARM_TRADITIONAL) - Thumb2 is not available, only traditional ARM (v4 or greater) */
301 /* CPU(ARM_THUMB2) - Thumb2 instruction set is available */
302 /* Only one of these will be defined. */
303 #if !defined(WTF_CPU_ARM_TRADITIONAL) && !defined(WTF_CPU_ARM_THUMB2)
304 #  if defined(thumb2) || defined(__thumb2__) \
305     || ((defined(__thumb) || defined(__thumb__)) && WTF_THUMB_ARCH_VERSION == 4) \
306     || (defined(__ARM_ARCH_ISA_THUMB) && __ARM_ARCH_ISA_THUMB == 2)
307 #    define WTF_CPU_ARM_TRADITIONAL 0
308 #    define WTF_CPU_ARM_THUMB2 1
309 #  elif WTF_ARM_ARCH_AT_LEAST(4)
310 #    define WTF_CPU_ARM_TRADITIONAL 1
311 #    define WTF_CPU_ARM_THUMB2 0
312 #  else
313 #    error "Not supported ARM architecture"
314 #  endif
315 #elif CPU(ARM_TRADITIONAL) && CPU(ARM_THUMB2) /* Sanity Check */
316 #  error "Cannot use both of WTF_CPU_ARM_TRADITIONAL and WTF_CPU_ARM_THUMB2 platforms"
317 #endif /* !defined(WTF_CPU_ARM_TRADITIONAL) && !defined(WTF_CPU_ARM_THUMB2) */
318 
319 #if defined(__ARM_NEON__) && !defined(WTF_CPU_ARM_NEON)
320 #define WTF_CPU_ARM_NEON 1
321 #endif
322 
323 #if CPU(ARM_NEON) && (!COMPILER(GCC) || GCC_VERSION_AT_LEAST(4, 7, 0))
324 // All NEON intrinsics usage can be disabled by this macro.
325 #define HAVE_ARM_NEON_INTRINSICS 1
326 #endif
327 
328 #if (defined(__VFP_FP__) && !defined(__SOFTFP__))
329 #define WTF_CPU_ARM_VFP 1
330 #endif
331 
332 #if defined(__ARM_ARCH_7S__)
333 #define WTF_CPU_APPLE_ARMV7S 1
334 #endif
335 
336 #endif /* ARM */
337 
338 #if CPU(ARM) || CPU(MIPS) || CPU(SH4) || CPU(SPARC)
339 #define WTF_CPU_NEEDS_ALIGNED_ACCESS 1
340 #endif
341 
342 /* ==== OS() - underlying operating system; only to be used for mandated low-level services like
343    virtual memory, not to choose a GUI toolkit ==== */
344 
345 /* OS(AIX) - AIX */
346 #ifdef _AIX
347 #define WTF_OS_AIX 1
348 #endif
349 
350 /* OS(DARWIN) - Any Darwin-based OS, including Mac OS X and iPhone OS */
351 #ifdef __APPLE__
352 #define WTF_OS_DARWIN 1
353 
354 #include <Availability.h>
355 #include <AvailabilityMacros.h>
356 #include <TargetConditionals.h>
357 #endif
358 
359 /* OS(IOS) - iOS */
360 /* OS(MAC_OS_X) - Mac OS X (not including iOS) */
361 #if OS(DARWIN) && ((defined(TARGET_OS_EMBEDDED) && TARGET_OS_EMBEDDED) \
362     || (defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE)                 \
363     || (defined(TARGET_IPHONE_SIMULATOR) && TARGET_IPHONE_SIMULATOR))
364 #define WTF_OS_IOS 1
365 #elif OS(DARWIN) && ((defined(TARGET_OS_EMBEDDED) && TARGET_OS_EMBEDDED) \
366     || (defined(TARGET_OS_APPLETV) && TARGET_OS_APPLETV)                 \
367     || (defined(TARGET_APPLETV_SIMULATOR) && TARGET_APPLETV_SIMULATOR))
368 #define WTF_OS_IOS 1
369 #define WTF_OS_TVOS 1
370 #elif OS(DARWIN) && defined(TARGET_OS_MAC) && TARGET_OS_MAC
371 #define WTF_OS_MAC_OS_X 1
372 
373 /* FIXME: These can be removed after sufficient time has passed since the removal of BUILDING_ON / TARGETING macros. */
374 
375 #define ERROR_PLEASE_COMPARE_WITH_MAC_OS_X_VERSION_MIN_REQUIRED 0 / 0
376 #define ERROR_PLEASE_COMPARE_WITH_MAC_OS_X_VERSION_MAX_ALLOWED 0 / 0
377 
378 #define BUILDING_ON_LEOPARD ERROR_PLEASE_COMPARE_WITH_MAC_OS_X_VERSION_MIN_REQUIRED
379 #define BUILDING_ON_SNOW_LEOPARD ERROR_PLEASE_COMPARE_WITH_MAC_OS_X_VERSION_MIN_REQUIRED
380 #define BUILDING_ON_LION ERROR_PLEASE_COMPARE_WITH_MAC_OS_X_VERSION_MIN_REQUIRED
381 
382 #define TARGETING_LEOPARD ERROR_PLEASE_COMPARE_WITH_MAC_OS_X_VERSION_MAX_ALLOWED
383 #define TARGETING_SNOW_LEOPARD ERROR_PLEASE_COMPARE_WITH_MAC_OS_X_VERSION_MAX_ALLOWED
384 #define TARGETING_LION ERROR_PLEASE_COMPARE_WITH_MAC_OS_X_VERSION_MAX_ALLOWED
385 #endif
386 
387 /* OS(FREEBSD) - FreeBSD */
388 #if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__)
389 #define WTF_OS_FREEBSD 1
390 #endif
391 
392 /* OS(HURD) - GNU/Hurd */
393 #ifdef __GNU__
394 #define WTF_OS_HURD 1
395 #endif
396 
397 /* OS(INTEGRITY) - INTEGRITY */
398 #ifdef __INTEGRITY
399 #define WTF_OS_INTEGRITY 1
400 #endif
401 
402 /* OS(LINUX) - Linux */
403 #ifdef __linux__
404 #define WTF_OS_LINUX 1
405 #endif
406 
407 /* OS(NETBSD) - NetBSD */
408 #if defined(__NetBSD__)
409 #define WTF_OS_NETBSD 1
410 #endif
411 
412 /* OS(OPENBSD) - OpenBSD */
413 #ifdef __OpenBSD__
414 #define WTF_OS_OPENBSD 1
415 #endif
416 
417 /* OS(QNX) - QNX */
418 #if defined(__QNXNTO__)
419 #define WTF_OS_QNX 1
420 #endif
421 
422 /* OS(SOLARIS) - Solaris */
423 #if defined(sun) || defined(__sun)
424 #define WTF_OS_SOLARIS 1
425 #endif
426 
427 /* OS(WINCE) - Windows CE; note that for this platform OS(WINDOWS) is also defined */
428 #if defined(_WIN32_WCE)
429 #define WTF_OS_WINCE 1
430 #endif
431 
432 /* OS(WINCE) - Windows Runtime; note that for this platform OS(WINDOWS) is also defined */
433 #if defined(WINAPI_FAMILY) && (WINAPI_FAMILY==WINAPI_FAMILY_APP || WINAPI_FAMILY==WINAPI_FAMILY_PHONE_APP)
434 #define WTF_OS_WINRT 1
435 #endif
436 
437 /* OS(WINDOWS) - Any version of Windows */
438 #if defined(WIN32) || defined(_WIN32)
439 #define WTF_OS_WINDOWS 1
440 #endif
441 
442 #ifdef __rtems__
443 #define WTF_OS_RTEMS 1
444 #endif
445 
446 #define WTF_OS_WIN ERROR "USE WINDOWS WITH OS NOT WIN"
447 #define WTF_OS_MAC ERROR "USE MAC_OS_X WITH OS NOT MAC"
448 
449 /* OS(UNIX) - Any Unix-like system */
450 #if   OS(AIX)              \
451     || OS(DARWIN)           \
452     || OS(FREEBSD)          \
453     || OS(HURD)             \
454     || OS(INTEGRITY)        \
455     || OS(LINUX)            \
456     || OS(NETBSD)           \
457     || OS(OPENBSD)          \
458     || OS(QNX)              \
459     || OS(RTEMS)            \
460     || OS(SOLARIS)          \
461     || defined(unix)        \
462     || defined(__unix)      \
463     || defined(__unix__)
464 #define WTF_OS_UNIX 1
465 #endif
466 
467 /* Operating environments */
468 
469 /* FIXME: these are all mixes of OS, operating environment and policy choices. */
470 /* PLATFORM(QT) */
471 /* PLATFORM(WX) */
472 /* PLATFORM(EFL) */
473 /* PLATFORM(GTK) */
474 /* PLATFORM(BLACKBERRY) */
475 /* PLATFORM(MAC) */
476 /* PLATFORM(WIN) */
477 #if defined(BUILDING_QT__)
478 #define WTF_PLATFORM_QT 1
479 #elif defined(BUILDING_WX__)
480 #define WTF_PLATFORM_WX 1
481 #elif defined(BUILDING_EFL__)
482 #define WTF_PLATFORM_EFL 1
483 #elif defined(BUILDING_GTK__)
484 #define WTF_PLATFORM_GTK 1
485 #elif defined(BUILDING_BLACKBERRY__)
486 #define WTF_PLATFORM_BLACKBERRY 1
487 #elif OS(DARWIN)
488 #define WTF_PLATFORM_MAC 1
489 #elif OS(WINDOWS)
490 #define WTF_PLATFORM_WIN 1
491 #else
492 
493 /* PLATFORM(IOS) */
494 /* FIXME: this is sometimes used as an OS switch and sometimes for higher-level things */
495 #if (defined(TARGET_OS_EMBEDDED) && TARGET_OS_EMBEDDED) || (defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE)
496 #define WTF_PLATFORM_IOS 1
497 #endif
498 
499 /* PLATFORM(IOS_SIMULATOR) */
500 #if defined(TARGET_IPHONE_SIMULATOR) && TARGET_IPHONE_SIMULATOR
501 #define WTF_PLATFORM_IOS 1
502 #define WTF_PLATFORM_IOS_SIMULATOR 1
503 #endif
504 #endif
505 
506 /* Graphics engines */
507 
508 /* USE(CG) and PLATFORM(CI) */
509 #if PLATFORM(MAC) || PLATFORM(IOS)
510 #define WTF_USE_CG 1
511 #endif
512 #if PLATFORM(MAC) || PLATFORM(IOS) || (PLATFORM(WIN) && USE(CG))
513 #define WTF_USE_CA 1
514 #endif
515 
516 #if PLATFORM(BLACKBERRY)
517 #define WTF_USE_SKIA 1
518 #define WTF_USE_LOW_QUALITY_IMAGE_INTERPOLATION 1
519 #define WTF_USE_LOW_QUALITY_IMAGE_NO_JPEG_DITHERING 1
520 #define WTF_USE_LOW_QUALITY_IMAGE_NO_JPEG_FANCY_UPSAMPLING 1
521 #endif
522 
523 #if PLATFORM(GTK)
524 #define WTF_USE_CAIRO 1
525 #define ENABLE_GLOBAL_FASTMALLOC_NEW 0
526 #endif
527 
528 /* On Windows, use QueryPerformanceCounter by default */
529 #if OS(WINDOWS)
530 #define WTF_USE_QUERY_PERFORMANCE_COUNTER  1
531 #endif
532 
533 #if OS(WINCE)
534 #define NOSHLWAPI      /* shlwapi.h not available on WinCe */
535 
536 /* MSDN documentation says these functions are provided with uspce.lib.  But we cannot find this file. */
537 #define __usp10__      /* disable "usp10.h" */
538 
539 #define _INC_ASSERT    /* disable "assert.h" */
540 #define assert(x)
541 
542 #endif  /* OS(WINCE) */
543 
544 #if OS(WINCE) && !PLATFORM(QT)
545 #define WTF_USE_WCHAR_UNICODE 1
546 #elif PLATFORM(GTK)
547 /* The GTK+ Unicode backend is configurable */
548 #else
549 #define WTF_USE_ICU_UNICODE 1
550 #endif
551 
552 #if PLATFORM(MAC) && !PLATFORM(IOS)
553 #if CPU(X86_64)
554 #define WTF_USE_PLUGIN_HOST_PROCESS 1
555 #endif
556 #if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
557 #define WTF_USE_SCROLLBAR_PAINTER 1
558 #define HAVE_XPC 1
559 #endif
560 #define WTF_USE_CF 1
561 #define HAVE_READLINE 1
562 #define HAVE_RUNLOOP_TIMER 1
563 #if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1080
564 #define HAVE_LAYER_HOSTING_IN_WINDOW_SERVER 1
565 #endif
566 #define WTF_USE_APPKIT 1
567 #define WTF_USE_SECURITY_FRAMEWORK 1
568 #endif /* PLATFORM(MAC) && !PLATFORM(IOS) */
569 
570 #if PLATFORM(IOS)
571 #define DONT_FINALIZE_ON_MAIN_THREAD 1
572 #endif
573 
574 #if PLATFORM(QT) && OS(DARWIN)
575 #define WTF_USE_CF 1
576 #endif
577 
578 #if OS(DARWIN) && !PLATFORM(GTK) && !PLATFORM(QT)
579 #define ENABLE_PURGEABLE_MEMORY 1
580 #endif
581 
582 #if PLATFORM(IOS)
583 #define HAVE_READLINE 1
584 #define WTF_USE_APPKIT 0
585 #define WTF_USE_CF 1
586 #define WTF_USE_CFNETWORK 1
587 #define WTF_USE_NETWORK_CFDATA_ARRAY_CALLBACK 1
588 #define WTF_USE_SECURITY_FRAMEWORK 0
589 #define WTF_USE_WEB_THREAD 1
590 #endif /* PLATFORM(IOS) */
591 
592 #if PLATFORM(WIN) && !OS(WINCE)
593 #define WTF_USE_CF 1
594 #endif
595 
596 #if PLATFORM(WIN) && !OS(WINCE) && !PLATFORM(WIN_CAIRO)
597 #define WTF_USE_CFNETWORK 1
598 #endif
599 
600 #if USE(CFNETWORK) || PLATFORM(MAC) || PLATFORM(IOS)
601 #define WTF_USE_CFURLCACHE 1
602 #endif
603 
604 #if PLATFORM(WX)
605 #if !CPU(PPC)
606 #if !defined(ENABLE_ASSEMBLER)
607 #define ENABLE_ASSEMBLER 1
608 #endif
609 #define ENABLE_JIT 1
610 #endif
611 #define ENABLE_GLOBAL_FASTMALLOC_NEW 0
612 #define ENABLE_LLINT 0
613 #if OS(DARWIN)
614 #define WTF_USE_CF 1
615 #endif
616 #endif
617 
618 #if !defined(HAVE_ACCESSIBILITY)
619 #if PLATFORM(IOS) || PLATFORM(MAC) || PLATFORM(WIN) || PLATFORM(GTK) || PLATFORM(EFL)
620 #define HAVE_ACCESSIBILITY 1
621 #endif
622 #endif /* !defined(HAVE_ACCESSIBILITY) */
623 
624 #if OS(UNIX)
625 #define HAVE_ERRNO_H 1
626 #if !OS(INTEGRITY)
627 #define HAVE_MMAP 1
628 #endif
629 #define HAVE_SIGNAL_H 1
630 #define HAVE_STRINGS_H 1
631 #define HAVE_SYS_PARAM_H 1
632 #define HAVE_SYS_TIME_H 1
633 #define WTF_USE_OS_RANDOMNESS 1
634 #define WTF_USE_PTHREADS 1
635 #endif /* OS(UNIX) */
636 
637 #if OS(UNIX) && !OS(QNX)
638 #define HAVE_LANGINFO_H 1
639 #endif
640 
641 #if (OS(FREEBSD) || OS(OPENBSD)) && !defined(__GLIBC__)
642 #define HAVE_PTHREAD_NP_H 1
643 #endif
644 
645 #if !defined(HAVE_VASPRINTF)
646 #if !COMPILER(MSVC) && !COMPILER(RVCT) && !COMPILER(MINGW) && !(COMPILER(GCC) && OS(QNX))
647 #define HAVE_VASPRINTF 1
648 #endif
649 #endif
650 
651 #if !defined(HAVE_STRNSTR)
652 #if OS(DARWIN) || (OS(FREEBSD) && !defined(__GLIBC__))
653 #define HAVE_STRNSTR 1
654 #endif
655 #endif
656 
657 #if !OS(WINDOWS) && !OS(SOLARIS)
658 #define HAVE_TM_GMTOFF 1
659 #define HAVE_TM_ZONE 1
660 #define HAVE_TIMEGM 1
661 #endif
662 
663 #if OS(DARWIN)
664 
665 #define HAVE_DISPATCH_H 1
666 #define HAVE_MADV_FREE 1
667 #define HAVE_MADV_FREE_REUSE 1
668 #define HAVE_MERGESORT 1
669 #define HAVE_PTHREAD_SETNAME_NP 1
670 #define HAVE_SYS_TIMEB_H 1
671 #define WTF_USE_ACCELERATE 1
672 
673 #if !PLATFORM(IOS)
674 #define HAVE_HOSTED_CORE_ANIMATION 1
675 #endif /* !PLATFORM(IOS) */
676 
677 #endif /* OS(DARWIN) */
678 
679 #if OS(WINDOWS) && !OS(WINCE)
680 #define HAVE_SYS_TIMEB_H 1
681 #define HAVE_ALIGNED_MALLOC 1
682 #define HAVE_ISDEBUGGERPRESENT 1
683 #endif
684 
685 #if OS(WINDOWS)
686 #define HAVE_VIRTUALALLOC 1
687 #define WTF_USE_OS_RANDOMNESS 1
688 #endif
689 
690 #if OS(QNX)
691 #define HAVE_MADV_FREE_REUSE 1
692 #define HAVE_MADV_FREE 1
693 #endif
694 
695 /* ENABLE macro defaults */
696 
697 /* FIXME: move out all ENABLE() defines from here to FeatureDefines.h */
698 
699 /* Include feature macros */
700 #include <wtf/FeatureDefines.h>
701 
702 #if PLATFORM(QT)
703 /* We must not customize the global operator new and delete for the Qt port. */
704 #define ENABLE_GLOBAL_FASTMALLOC_NEW 0
705 #if !OS(UNIX)
706 #define USE_SYSTEM_MALLOC 1
707 #endif
708 #endif
709 
710 #if PLATFORM(EFL)
711 #define ENABLE_GLOBAL_FASTMALLOC_NEW 0
712 #endif
713 
714 #if !defined(ENABLE_GLOBAL_FASTMALLOC_NEW)
715 #define ENABLE_GLOBAL_FASTMALLOC_NEW 1
716 #endif
717 
718 #define ENABLE_DEBUG_WITH_BREAKPOINT 0
719 #define ENABLE_SAMPLING_COUNTERS 0
720 #define ENABLE_SAMPLING_FLAGS 0
721 #define ENABLE_SAMPLING_REGIONS 0
722 #define ENABLE_OPCODE_SAMPLING 0
723 #define ENABLE_CODEBLOCK_SAMPLING 0
724 #if ENABLE(CODEBLOCK_SAMPLING) && !ENABLE(OPCODE_SAMPLING)
725 #error "CODEBLOCK_SAMPLING requires OPCODE_SAMPLING"
726 #endif
727 #if ENABLE(OPCODE_SAMPLING) || ENABLE(SAMPLING_FLAGS) || ENABLE(SAMPLING_REGIONS)
728 #define ENABLE_SAMPLING_THREAD 1
729 #endif
730 
731 #if !defined(WTF_USE_JSVALUE64) && !defined(WTF_USE_JSVALUE32_64)
732 #if (CPU(X86_64) && (OS(UNIX) || OS(WINDOWS))) \
733     || (CPU(IA64) && !CPU(IA64_32)) \
734     || CPU(ALPHA) \
735     || CPU(ARM64) \
736     || CPU(SPARC64) \
737     || CPU(S390X) \
738     || CPU(PPC64)
739 #define WTF_USE_JSVALUE64 1
740 #else
741 #define WTF_USE_JSVALUE32_64 1
742 #endif
743 #endif /* !defined(WTF_USE_JSVALUE64) && !defined(WTF_USE_JSVALUE32_64) */
744 
745 /* Disable the JIT on versions of GCC prior to 4.1 */
746 #if !defined(ENABLE_JIT) && COMPILER(GCC) && !GCC_VERSION_AT_LEAST(4, 1, 0)
747 #define ENABLE_JIT 0
748 #endif
749 
750 /* The JIT is enabled by default on all x86, x86-64, ARM & MIPS platforms. */
751 #if !defined(ENABLE_JIT) \
752     && (CPU(X86) || CPU(X86_64) || CPU(ARM) || CPU(MIPS) || CPU(ARM64)) \
753     && (OS(DARWIN) || !COMPILER(GCC) || GCC_VERSION_AT_LEAST(4, 1, 0)) \
754     && !OS(WINCE) \
755     && !(OS(QNX) && !PLATFORM(QT)) /* We use JIT in QNX Qt */
756 #define ENABLE_JIT 1
757 #endif
758 
759 /* If possible, try to enable a disassembler. This is optional. We proceed in two
760    steps: first we try to find some disassembler that we can use, and then we
761    decide if the high-level disassembler API can be enabled. */
762 #if !defined(WTF_USE_UDIS86) && ENABLE(JIT) && (PLATFORM(MAC) || (PLATFORM(QT) && OS(LINUX))) \
763     && (CPU(X86) || CPU(X86_64))
764 #define WTF_USE_UDIS86 1
765 #endif
766 
767 #if !defined(ENABLE_DISASSEMBLER) && (USE(UDIS86) || USE(ARMV7_DISASSEMBLER) || USE(ARM64_DISASSEMBLER) || USE(MIPS32_DISASSEMBLER))
768 #define ENABLE_DISASSEMBLER 1
769 #endif
770 
771 /* On the GTK+ port we take an extra precaution for LLINT support:
772  * We disable it on x86 builds if the build target doesn't support SSE2
773  * instructions (LLINT requires SSE2 on this platform). */
774 #if !defined(ENABLE_LLINT) && PLATFORM(GTK) && CPU(X86) && COMPILER(GCC) \
775     && !defined(__SSE2__)
776 #define ENABLE_LLINT 0
777 #endif
778 
779 /* On some of the platforms where we have a JIT, we want to also have the
780    low-level interpreter. */
781 #if !defined(ENABLE_LLINT) \
782     && ENABLE(JIT) \
783     && (OS(DARWIN) || OS(LINUX)) \
784     && (PLATFORM(MAC) || PLATFORM(IOS) || PLATFORM(GTK) || PLATFORM(QT)) \
785     && (CPU(X86) || CPU(X86_64) || CPU(ARM_THUMB2) || CPU(ARM_TRADITIONAL) || CPU(MIPS))
786 #define ENABLE_LLINT 1
787 #endif
788 
789 #if !defined(ENABLE_DFG_JIT) && ENABLE(JIT) && !COMPILER(MSVC)
790 /* Enable the DFG JIT on X86 and X86_64.  Only tested on Mac and GNU/Linux. */
791 #if (CPU(X86) || CPU(X86_64)) && (OS(DARWIN) || OS(LINUX))
792 #define ENABLE_DFG_JIT 1
793 #endif
794 /* Enable the DFG JIT on ARMv7.  Only tested on iOS and Qt Linux. */
795 #if CPU(ARM_THUMB2) && (PLATFORM(IOS) || PLATFORM(BLACKBERRY) || PLATFORM(QT))
796 #define ENABLE_DFG_JIT 1
797 #endif
798 /* Enable the DFG JIT on ARM. */
799 #if CPU(ARM_TRADITIONAL)
800 #define ENABLE_DFG_JIT 1
801 #endif
802 /* Enable the DFG JIT on MIPS. */
803 #if CPU(MIPS)
804 #define ENABLE_DFG_JIT 1
805 #endif
806 #endif
807 
808 /* If the jit is not available, enable the LLInt C Loop: */
809 /* Not for Qml. We have our own interpreter. */
810 #if 0 /* !ENABLE(JIT) */
811 #undef ENABLE_LLINT        /* Undef so that we can redefine it. */
812 #undef ENABLE_LLINT_C_LOOP /* Undef so that we can redefine it. */
813 #undef ENABLE_DFG_JIT      /* Undef so that we can redefine it. */
814 #define ENABLE_LLINT 1
815 #define ENABLE_LLINT_C_LOOP 1
816 #define ENABLE_DFG_JIT 0
817 #endif
818 
819 /* Do a sanity check to make sure that we at least have one execution engine in
820    use: */
821 #if 0 /* !(ENABLE(JIT) || ENABLE(LLINT)) */
822 #error You have to have at least one execution model enabled to build JSC
823 #endif
824 
825 /* Profiling of types and values used by JIT code. DFG_JIT depends on it, but you
826    can enable it manually with DFG turned off if you want to use it as a standalone
827    profiler. In that case, you probably want to also enable VERBOSE_VALUE_PROFILE
828    below. */
829 #if !defined(ENABLE_VALUE_PROFILER) && ENABLE(DFG_JIT)
830 #define ENABLE_VALUE_PROFILER 1
831 #endif
832 
833 #if !defined(ENABLE_VERBOSE_VALUE_PROFILE) && ENABLE(VALUE_PROFILER)
834 #define ENABLE_VERBOSE_VALUE_PROFILE 0
835 #endif
836 
837 #if !defined(ENABLE_SIMPLE_HEAP_PROFILING)
838 #define ENABLE_SIMPLE_HEAP_PROFILING 0
839 #endif
840 
841 /* Counts uses of write barriers using sampling counters. Be sure to also
842    set ENABLE_SAMPLING_COUNTERS to 1. */
843 #if !defined(ENABLE_WRITE_BARRIER_PROFILING)
844 #define ENABLE_WRITE_BARRIER_PROFILING 0
845 #endif
846 
847 /* Enable verification that that register allocations are not made within generated control flow.
848    Turned on for debug builds. */
849 #if !defined(ENABLE_DFG_REGISTER_ALLOCATION_VALIDATION) && ENABLE(DFG_JIT)
850 #if !defined(NDEBUG)
851 #define ENABLE_DFG_REGISTER_ALLOCATION_VALIDATION 1
852 #else
853 #define ENABLE_DFG_REGISTER_ALLOCATION_VALIDATION 0
854 #endif
855 #endif
856 
857 /* Configure the JIT */
858 #if CPU(X86) && COMPILER(MSVC)
859 #define JSC_HOST_CALL __fastcall
860 #elif CPU(X86) && COMPILER(GCC)
861 #define JSC_HOST_CALL __attribute__ ((fastcall))
862 #else
863 #define JSC_HOST_CALL
864 #endif
865 
866 /* Configure the interpreter */
867 #if COMPILER(GCC) || (COMPILER(RVCT) && defined(__GNUC__))
868 #define HAVE_COMPUTED_GOTO 1
869 #endif
870 
871 /* Determine if we need to enable Computed Goto Opcodes or not: */
872 #if HAVE(COMPUTED_GOTO) && ENABLE(LLINT)
873 #define ENABLE_COMPUTED_GOTO_OPCODES 1
874 #endif
875 
876 /* Regular Expression Tracing - Set to 1 to trace RegExp's in jsc.  Results dumped at exit */
877 #define ENABLE_REGEXP_TRACING 0
878 
879 /* Yet Another Regex Runtime - turned on by default for JIT enabled ports. */
880 #if !defined(ENABLE_YARR_JIT) && (ENABLE(JIT) || ENABLE(LLINT_C_LOOP)) && !(OS(QNX) && PLATFORM(QT))
881 #define ENABLE_YARR_JIT 1
882 
883 /* Setting this flag compares JIT results with interpreter results. */
884 #define ENABLE_YARR_JIT_DEBUG 0
885 #endif
886 
887 /* If either the JIT or the RegExp JIT is enabled, then the Assembler must be
888    enabled as well: */
889 #if ENABLE(JIT) || ENABLE(YARR_JIT)
890 #if defined(ENABLE_ASSEMBLER) && !ENABLE_ASSEMBLER
891 #error "Cannot enable the JIT or RegExp JIT without enabling the Assembler"
892 #else
893 #undef ENABLE_ASSEMBLER
894 #define ENABLE_ASSEMBLER 1
895 #endif
896 #endif
897 
898 /* Pick which allocator to use; we only need an executable allocator if the assembler is compiled in.
899    On x86-64 we use a single fixed mmap, on other platforms we mmap on demand. */
900 #if ENABLE(ASSEMBLER)
901 #if CPU(X86_64) && !OS(WINDOWS) || PLATFORM(IOS) || CPU(ARM64)
902 #define ENABLE_EXECUTABLE_ALLOCATOR_FIXED 1
903 #else
904 #define ENABLE_EXECUTABLE_ALLOCATOR_DEMAND 1
905 #endif
906 #endif
907 
908 /* Use the QXmlStreamReader implementation for XMLDocumentParser */
909 /* Use the QXmlQuery implementation for XSLTProcessor */
910 #if PLATFORM(QT)
911 #if !USE(LIBXML2)
912 #define WTF_USE_QXMLSTREAM 1
913 #define WTF_USE_QXMLQUERY 1
914 #endif
915 #endif
916 
917 /* Accelerated compositing */
918 #if PLATFORM(MAC) || PLATFORM(IOS) || PLATFORM(QT) || (PLATFORM(WIN) && !OS(WINCE) && !PLATFORM(WIN_CAIRO))
919 #define WTF_USE_ACCELERATED_COMPOSITING 1
920 #endif
921 
922 #if ENABLE(WEBGL) && !defined(WTF_USE_3D_GRAPHICS)
923 #define WTF_USE_3D_GRAPHICS 1
924 #endif
925 
926 /* Qt always uses Texture Mapper */
927 #if PLATFORM(QT)
928 #define WTF_USE_TEXTURE_MAPPER 1
929 #endif
930 
931 #if USE(TEXTURE_MAPPER) && USE(3D_GRAPHICS) && !defined(WTF_USE_TEXTURE_MAPPER_GL)
932 #define WTF_USE_TEXTURE_MAPPER_GL 1
933 #endif
934 
935 /* Compositing on the UI-process in WebKit2 */
936 #if USE(3D_GRAPHICS) && PLATFORM(QT)
937 #define WTF_USE_COORDINATED_GRAPHICS 1
938 #endif
939 
940 #if PLATFORM(MAC) || PLATFORM(IOS)
941 #define WTF_USE_PROTECTION_SPACE_AUTH_CALLBACK 1
942 #endif
943 
944 /* Set up a define for a common error that is intended to cause a build error -- thus the space after Error. */
945 #define WTF_PLATFORM_CFNETWORK Error USE_macro_should_be_used_with_CFNETWORK
946 
947 /* FIXME: Eventually we should enable this for all platforms and get rid of the define. */
948 #if PLATFORM(IOS) || PLATFORM(MAC) || PLATFORM(WIN) || PLATFORM(QT) || PLATFORM(GTK) || PLATFORM(EFL)
949 #define WTF_USE_PLATFORM_STRATEGIES 1
950 #endif
951 
952 #if PLATFORM(WIN)
953 #define WTF_USE_CROSS_PLATFORM_CONTEXT_MENUS 1
954 #endif
955 
956 #if PLATFORM(MAC) && HAVE(ACCESSIBILITY)
957 #define WTF_USE_ACCESSIBILITY_CONTEXT_MENUS 1
958 #endif
959 
960 #if !defined(ENABLE_THREADING_LIBDISPATCH) && HAVE(DISPATCH_H)
961 #define ENABLE_THREADING_LIBDISPATCH 1
962 #elif !defined(ENABLE_THREADING_OPENMP) && defined(_OPENMP)
963 #define ENABLE_THREADING_OPENMP 1
964 #elif !defined(THREADING_GENERIC)
965 #define ENABLE_THREADING_GENERIC 1
966 #endif
967 
968 #if USE(GLIB)
969 #include <wtf/gobject/GTypedefs.h>
970 #endif
971 
972 /* FIXME: This define won't be needed once #27551 is fully landed. However,
973    since most ports try to support sub-project independence, adding new headers
974    to WTF causes many ports to break, and so this way we can address the build
975    breakages one port at a time. */
976 #if !defined(WTF_USE_EXPORT_MACROS) && (PLATFORM(MAC) || PLATFORM(QT) || PLATFORM(WX))
977 #define WTF_USE_EXPORT_MACROS 1
978 #endif
979 
980 #if !defined(WTF_USE_EXPORT_MACROS_FOR_TESTING) && (PLATFORM(GTK) || PLATFORM(WIN))
981 #define WTF_USE_EXPORT_MACROS_FOR_TESTING 1
982 #endif
983 
984 #if (PLATFORM(QT) && !OS(DARWIN) && !OS(WINDOWS)) || PLATFORM(GTK) || PLATFORM(EFL)
985 #define WTF_USE_UNIX_DOMAIN_SOCKETS 1
986 #endif
987 
988 #if !defined(ENABLE_COMPARE_AND_SWAP) && (OS(WINDOWS) || (COMPILER(GCC) && (CPU(X86) || CPU(X86_64) || CPU(ARM_THUMB2))))
989 #define ENABLE_COMPARE_AND_SWAP 1
990 #endif
991 
992 #define ENABLE_OBJECT_MARK_LOGGING 0
993 
994 #if !defined(ENABLE_PARALLEL_GC) && !ENABLE(OBJECT_MARK_LOGGING) && (PLATFORM(MAC) || PLATFORM(IOS) || PLATFORM(BLACKBERRY) || PLATFORM(GTK)) && ENABLE(COMPARE_AND_SWAP)
995 #define ENABLE_PARALLEL_GC 1
996 #elif PLATFORM(QT)
997 // Parallel GC is temporarily disabled on Qt because of regular crashes, see https://bugs.webkit.org/show_bug.cgi?id=90957 for details
998 #define ENABLE_PARALLEL_GC 0
999 #endif
1000 
1001 #if !defined(ENABLE_GC_VALIDATION) && !defined(NDEBUG)
1002 #define ENABLE_GC_VALIDATION 1
1003 #endif
1004 
1005 #if !defined(ENABLE_BINDING_INTEGRITY)
1006 #define ENABLE_BINDING_INTEGRITY 1
1007 #endif
1008 
1009 #if PLATFORM(MAC) && !PLATFORM(IOS) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
1010 #define WTF_USE_AVFOUNDATION 1
1011 #endif
1012 
1013 #if (PLATFORM(IOS) && __IPHONE_OS_VERSION_MIN_REQUIRED >= 60000) || (PLATFORM(MAC) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 1080)
1014 #define WTF_USE_COREMEDIA 1
1015 #endif
1016 
1017 #if PLATFORM(MAC) && !PLATFORM(IOS) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
1018 #define HAVE_AVFOUNDATION_TEXT_TRACK_SUPPORT 1
1019 #endif
1020 
1021 #if PLATFORM(MAC) && !PLATFORM(IOS) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
1022 #define HAVE_MEDIA_ACCESSIBILITY_FRAMEWORK 1
1023 #endif
1024 
1025 #if PLATFORM(MAC) || PLATFORM(GTK) || (PLATFORM(WIN) && !OS(WINCE) && !PLATFORM(WIN_CAIRO)) || PLATFORM(BLACKBERRY)
1026 #define WTF_USE_REQUEST_ANIMATION_FRAME_TIMER 1
1027 #endif
1028 
1029 #if PLATFORM(MAC) || PLATFORM(BLACKBERRY)
1030 #define WTF_USE_REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR 1
1031 #endif
1032 
1033 #if PLATFORM(MAC) && (PLATFORM(IOS) || __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070)
1034 #define HAVE_INVERTED_WHEEL_EVENTS 1
1035 #endif
1036 
1037 #if PLATFORM(MAC)
1038 #define WTF_USE_COREAUDIO 1
1039 #endif
1040 
1041 #if !defined(WTF_USE_ZLIB) && !PLATFORM(QT)
1042 #define WTF_USE_ZLIB 1
1043 #endif
1044 
1045 #if PLATFORM(QT)
1046 #include <qglobal.h>
1047 #if defined(QT_OPENGL_ES_2) && !defined(WTF_USE_OPENGL_ES_2)
1048 #define WTF_USE_OPENGL_ES_2 1
1049 #endif
1050 #endif
1051 
1052 #if !PLATFORM(IOS) && PLATFORM(MAC) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 1080
1053 #define WTF_USE_CONTENT_FILTERING 1
1054 #endif
1055 
1056 #if ENABLE(YARR_JIT)
1057 #if CPU(ARM64) || (CPU(X86_64) && !OS(WINDOWS))
1058 /* Enable JIT'ing Regular Expressions that have nested parenthesis. */
1059 #define ENABLE_YARR_JIT_ALL_PARENS_EXPRESSIONS 1
1060 #define ENABLE_YARR_JIT_BACKREFERENCES 1
1061 #endif
1062 #endif
1063 
1064 #endif /* WTF_Platform_h */
1065