Platform.h 33.2 KB
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/*
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 * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
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 * Copyright (C) 2007-2009 Torch Mobile, Inc.
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 * Copyright (C) 2010, 2011 Research In Motion Limited. All rights reserved.
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 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */

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#ifndef WTF_Platform_h
#define WTF_Platform_h
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/* Include compiler specific macros */
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#include <wtf/Compiler.h>
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/* ==== PLATFORM handles OS, operating environment, graphics API, and
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   CPU. This macro will be phased out in favor of platform adaptation
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   macros, policy decision macros, and top-level port definitions. ==== */
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#define PLATFORM(WTF_FEATURE) (defined WTF_PLATFORM_##WTF_FEATURE  && WTF_PLATFORM_##WTF_FEATURE)
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/* ==== Platform adaptation macros: these describe properties of the target environment. ==== */
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/* CPU() - the target CPU architecture */
#define CPU(WTF_FEATURE) (defined WTF_CPU_##WTF_FEATURE  && WTF_CPU_##WTF_FEATURE)
/* HAVE() - specific system features (headers, functions or similar) that are present or not */
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#define HAVE(WTF_FEATURE) (defined HAVE_##WTF_FEATURE  && HAVE_##WTF_FEATURE)
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/* OS() - underlying operating system; only to be used for mandated low-level services like 
   virtual memory, not to choose a GUI toolkit */
#define OS(WTF_FEATURE) (defined WTF_OS_##WTF_FEATURE  && WTF_OS_##WTF_FEATURE)

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/* ==== Policy decision macros: these define policy choices for a particular port. ==== */

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/* USE() - use a particular third-party library or optional OS service */
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#define USE(WTF_FEATURE) (defined WTF_USE_##WTF_FEATURE  && WTF_USE_##WTF_FEATURE)
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/* ENABLE() - turn on a specific feature of WebKit */
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#define ENABLE(WTF_FEATURE) (defined ENABLE_##WTF_FEATURE  && ENABLE_##WTF_FEATURE)
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/* ==== CPU() - the target CPU architecture ==== */

/* This also defines CPU(BIG_ENDIAN) or CPU(MIDDLE_ENDIAN) or neither, as appropriate. */

/* CPU(ALPHA) - DEC Alpha */
#if defined(__alpha__)
#define WTF_CPU_ALPHA 1
#endif

/* CPU(IA64) - Itanium / IA-64 */
#if defined(__ia64__)
#define WTF_CPU_IA64 1
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/* 32-bit mode on Itanium */
#if !defined(__LP64__)
#define WTF_CPU_IA64_32 1
#endif
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#endif

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/* CPU(MIPS) - MIPS 32-bit */
/* Note: Only O32 ABI is tested, so we enable it for O32 ABI for now.  */
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#if (defined(mips) || defined(__mips__) || defined(MIPS) || defined(_MIPS_)) \
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    && defined(_ABIO32)
#define WTF_CPU_MIPS 1
#if defined(__MIPSEB__)
#define WTF_CPU_BIG_ENDIAN 1
#endif
#define WTF_MIPS_PIC (defined __PIC__)
#define WTF_MIPS_ARCH __mips
#define WTF_MIPS_ISA(v) (defined WTF_MIPS_ARCH && WTF_MIPS_ARCH == v)
#define WTF_MIPS_ISA_AT_LEAST(v) (defined WTF_MIPS_ARCH && WTF_MIPS_ARCH >= v)
#define WTF_MIPS_ARCH_REV __mips_isa_rev
#define WTF_MIPS_ISA_REV(v) (defined WTF_MIPS_ARCH_REV && WTF_MIPS_ARCH_REV == v)
#define WTF_MIPS_DOUBLE_FLOAT (defined __mips_hard_float && !defined __mips_single_float)
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#define WTF_MIPS_FP64 (defined __mips_fpr && __mips_fpr == 64)
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/* MIPS requires allocators to use aligned memory */
#define WTF_USE_ARENA_ALLOC_ALIGNMENT_INTEGER 1
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#endif /* MIPS */

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/* CPU(PPC) - PowerPC 32-bit */
#if   defined(__ppc__)     \
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    || defined(__PPC__)     \
    || defined(__powerpc__) \
    || defined(__powerpc)   \
    || defined(__POWERPC__) \
    || defined(_M_PPC)      \
    || defined(__PPC)
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#define WTF_CPU_PPC 1
#define WTF_CPU_BIG_ENDIAN 1
#endif

/* CPU(PPC64) - PowerPC 64-bit */
#if   defined(__ppc64__) \
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    || defined(__PPC64__)
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#define WTF_CPU_PPC64 1
#define WTF_CPU_BIG_ENDIAN 1
#endif

/* CPU(SH4) - SuperH SH-4 */
#if defined(__SH4__)
#define WTF_CPU_SH4 1
#endif

/* CPU(SPARC32) - SPARC 32-bit */
#if defined(__sparc) && !defined(__arch64__) || defined(__sparcv8)
#define WTF_CPU_SPARC32 1
#define WTF_CPU_BIG_ENDIAN 1
#endif

/* CPU(SPARC64) - SPARC 64-bit */
#if defined(__sparc__) && defined(__arch64__) || defined (__sparcv9)
#define WTF_CPU_SPARC64 1
#define WTF_CPU_BIG_ENDIAN 1
#endif

/* CPU(SPARC) - any SPARC, true for CPU(SPARC32) and CPU(SPARC64) */
#if CPU(SPARC32) || CPU(SPARC64)
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#define WTF_CPU_SPARC 1
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#endif

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/* CPU(S390X) - S390 64-bit */
#if defined(__s390x__)
#define WTF_CPU_S390X 1
#define WTF_CPU_BIG_ENDIAN 1
#endif

/* CPU(S390) - S390 32-bit */
#if defined(__s390__)
#define WTF_CPU_S390 1
#define WTF_CPU_BIG_ENDIAN 1
#endif

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/* CPU(X86) - i386 / x86 32-bit */
#if   defined(__i386__) \
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    || defined(i386)     \
    || defined(_M_IX86)  \
    || defined(_X86_)    \
    || defined(__THW_INTEL)
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#define WTF_CPU_X86 1
#endif

/* CPU(X86_64) - AMD64 / Intel64 / x86_64 64-bit */
#if   defined(__x86_64__) \
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    || defined(_M_X64)
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#define WTF_CPU_X86_64 1
#endif

/* CPU(ARM) - ARM, any version*/
#if   defined(arm) \
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    || defined(__arm__) \
    || defined(ARM) \
    || defined(_ARM_)
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#define WTF_CPU_ARM 1

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#if defined(__ARM_PCS_VFP)
#define WTF_CPU_ARM_HARDFP 1
#endif

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#if defined(__ARMEB__) || (COMPILER(RVCT) && defined(__BIG_ENDIAN))
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#define WTF_CPU_BIG_ENDIAN 1

#elif !defined(__ARM_EABI__) \
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    && !defined(__EABI__) \
    && !defined(__VFP_FP__) \
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    && !defined(_WIN32_WCE) \
    && !defined(ANDROID)
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#define WTF_CPU_MIDDLE_ENDIAN 1

#endif

#define WTF_ARM_ARCH_AT_LEAST(N) (CPU(ARM) && WTF_ARM_ARCH_VERSION >= N)

/* Set WTF_ARM_ARCH_VERSION */
#if   defined(__ARM_ARCH_4__) \
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    || defined(__ARM_ARCH_4T__) \
    || defined(__MARM_ARMV4__) \
    || defined(_ARMV4I_)
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#define WTF_ARM_ARCH_VERSION 4

#elif defined(__ARM_ARCH_5__) \
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    || defined(__ARM_ARCH_5T__) \
    || defined(__MARM_ARMV5__)
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#define WTF_ARM_ARCH_VERSION 5

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#elif defined(__ARM_ARCH_5E__) \
    || defined(__ARM_ARCH_5TE__) \
    || defined(__ARM_ARCH_5TEJ__)
#define WTF_ARM_ARCH_VERSION 5
/*ARMv5TE requires allocators to use aligned memory*/
#define WTF_USE_ARENA_ALLOC_ALIGNMENT_INTEGER 1

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#elif defined(__ARM_ARCH_6__) \
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    || defined(__ARM_ARCH_6J__) \
    || defined(__ARM_ARCH_6K__) \
    || defined(__ARM_ARCH_6Z__) \
    || defined(__ARM_ARCH_6ZK__) \
    || defined(__ARM_ARCH_6T2__) \
    || defined(__ARMV6__)
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#define WTF_ARM_ARCH_VERSION 6

#elif defined(__ARM_ARCH_7A__) \
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    || defined(__ARM_ARCH_7R__)
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#define WTF_ARM_ARCH_VERSION 7

/* RVCT sets _TARGET_ARCH_ARM */
#elif defined(__TARGET_ARCH_ARM)
#define WTF_ARM_ARCH_VERSION __TARGET_ARCH_ARM

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#if defined(__TARGET_ARCH_5E) \
    || defined(__TARGET_ARCH_5TE) \
    || defined(__TARGET_ARCH_5TEJ)
/*ARMv5TE requires allocators to use aligned memory*/
#define WTF_USE_ARENA_ALLOC_ALIGNMENT_INTEGER 1
#endif

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#else
#define WTF_ARM_ARCH_VERSION 0

#endif

/* Set WTF_THUMB_ARCH_VERSION */
#if   defined(__ARM_ARCH_4T__)
#define WTF_THUMB_ARCH_VERSION 1

#elif defined(__ARM_ARCH_5T__) \
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    || defined(__ARM_ARCH_5TE__) \
    || defined(__ARM_ARCH_5TEJ__)
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#define WTF_THUMB_ARCH_VERSION 2

#elif defined(__ARM_ARCH_6J__) \
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    || defined(__ARM_ARCH_6K__) \
    || defined(__ARM_ARCH_6Z__) \
    || defined(__ARM_ARCH_6ZK__) \
    || defined(__ARM_ARCH_6M__)
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#define WTF_THUMB_ARCH_VERSION 3

#elif defined(__ARM_ARCH_6T2__) \
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    || defined(__ARM_ARCH_7__) \
    || defined(__ARM_ARCH_7A__) \
    || defined(__ARM_ARCH_7R__) \
    || defined(__ARM_ARCH_7M__)
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#define WTF_THUMB_ARCH_VERSION 4

/* RVCT sets __TARGET_ARCH_THUMB */
#elif defined(__TARGET_ARCH_THUMB)
#define WTF_THUMB_ARCH_VERSION __TARGET_ARCH_THUMB

#else
#define WTF_THUMB_ARCH_VERSION 0
#endif


/* CPU(ARMV5_OR_LOWER) - ARM instruction set v5 or earlier */
/* On ARMv5 and below the natural alignment is required. 
   And there are some other differences for v5 or earlier. */
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#if !defined(ARMV5_OR_LOWER) && !WTF_ARM_ARCH_AT_LEAST(6)
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#define WTF_CPU_ARMV5_OR_LOWER 1
#endif


/* CPU(ARM_TRADITIONAL) - Thumb2 is not available, only traditional ARM (v4 or greater) */
/* CPU(ARM_THUMB2) - Thumb2 instruction set is available */
/* Only one of these will be defined. */
#if !defined(WTF_CPU_ARM_TRADITIONAL) && !defined(WTF_CPU_ARM_THUMB2)
#  if defined(thumb2) || defined(__thumb2__) \
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    || ((defined(__thumb) || defined(__thumb__)) && WTF_THUMB_ARCH_VERSION == 4)
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#    define WTF_CPU_ARM_TRADITIONAL 0
#    define WTF_CPU_ARM_THUMB2 1
#  elif WTF_ARM_ARCH_AT_LEAST(4)
#    define WTF_CPU_ARM_TRADITIONAL 1
#    define WTF_CPU_ARM_THUMB2 0
#  else
#    error "Not supported ARM architecture"
#  endif
#elif CPU(ARM_TRADITIONAL) && CPU(ARM_THUMB2) /* Sanity Check */
#  error "Cannot use both of WTF_CPU_ARM_TRADITIONAL and WTF_CPU_ARM_THUMB2 platforms"
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#endif /* !defined(WTF_CPU_ARM_TRADITIONAL) && !defined(WTF_CPU_ARM_THUMB2) */
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#if defined(__ARM_NEON__) && !defined(WTF_CPU_ARM_NEON)
#define WTF_CPU_ARM_NEON 1
#endif

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#if CPU(ARM_NEON) && (!COMPILER(GCC) || GCC_VERSION_AT_LEAST(4, 7, 0))
// All NEON intrinsics usage can be disabled by this macro.
#define HAVE_ARM_NEON_INTRINSICS 1
#endif

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#endif /* ARM */

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#if CPU(ARM) || CPU(MIPS) || CPU(SH4) || CPU(SPARC)
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#define WTF_CPU_NEEDS_ALIGNED_ACCESS 1
#endif
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/* ==== OS() - underlying operating system; only to be used for mandated low-level services like 
   virtual memory, not to choose a GUI toolkit ==== */

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/* OS(ANDROID) - Android */
#ifdef ANDROID
#define WTF_OS_ANDROID 1
#endif

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/* OS(AIX) - AIX */
#ifdef _AIX
#define WTF_OS_AIX 1
#endif
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/* OS(DARWIN) - Any Darwin-based OS, including Mac OS X and iPhone OS */
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#ifdef __APPLE__
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#define WTF_OS_DARWIN 1

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#include <Availability.h>
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#include <AvailabilityMacros.h>
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#include <TargetConditionals.h>
#endif

/* OS(IOS) - iOS */
/* OS(MAC_OS_X) - Mac OS X (not including iOS) */
#if OS(DARWIN) && ((defined(TARGET_OS_EMBEDDED) && TARGET_OS_EMBEDDED) \
    || (defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE)                 \
    || (defined(TARGET_IPHONE_SIMULATOR) && TARGET_IPHONE_SIMULATOR))
#define WTF_OS_IOS 1
#elif OS(DARWIN) && defined(TARGET_OS_MAC) && TARGET_OS_MAC
#define WTF_OS_MAC_OS_X 1
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/* FIXME: These can be removed after sufficient time has passed since the removal of BUILDING_ON / TARGETING macros. */

#define ERROR_PLEASE_COMPARE_WITH_MAC_OS_X_VERSION_MIN_REQUIRED 0 / 0
#define ERROR_PLEASE_COMPARE_WITH_MAC_OS_X_VERSION_MAX_ALLOWED 0 / 0

#define BUILDING_ON_LEOPARD ERROR_PLEASE_COMPARE_WITH_MAC_OS_X_VERSION_MIN_REQUIRED
#define BUILDING_ON_SNOW_LEOPARD ERROR_PLEASE_COMPARE_WITH_MAC_OS_X_VERSION_MIN_REQUIRED
#define BUILDING_ON_LION ERROR_PLEASE_COMPARE_WITH_MAC_OS_X_VERSION_MIN_REQUIRED

#define TARGETING_LEOPARD ERROR_PLEASE_COMPARE_WITH_MAC_OS_X_VERSION_MAX_ALLOWED
#define TARGETING_SNOW_LEOPARD ERROR_PLEASE_COMPARE_WITH_MAC_OS_X_VERSION_MAX_ALLOWED
#define TARGETING_LION ERROR_PLEASE_COMPARE_WITH_MAC_OS_X_VERSION_MAX_ALLOWED
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#endif

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/* OS(FREEBSD) - FreeBSD */
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#if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__)
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#define WTF_OS_FREEBSD 1
#endif

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/* OS(HURD) - GNU/Hurd */
#ifdef __GNU__
#define WTF_OS_HURD 1
#endif

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/* OS(LINUX) - Linux */
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#ifdef __linux__
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#define WTF_OS_LINUX 1
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#endif

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/* OS(NETBSD) - NetBSD */
#if defined(__NetBSD__)
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#define WTF_OS_NETBSD 1
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#endif

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/* OS(OPENBSD) - OpenBSD */
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#ifdef __OpenBSD__
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#define WTF_OS_OPENBSD 1
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#endif

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/* OS(QNX) - QNX */
#if defined(__QNXNTO__)
#define WTF_OS_QNX 1
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#endif

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/* OS(SOLARIS) - Solaris */
#if defined(sun) || defined(__sun)
#define WTF_OS_SOLARIS 1
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#endif

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/* OS(WINCE) - Windows CE; note that for this platform OS(WINDOWS) is also defined */
#if defined(_WIN32_WCE)
#define WTF_OS_WINCE 1
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#endif

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/* OS(WINDOWS) - Any version of Windows */
#if defined(WIN32) || defined(_WIN32)
#define WTF_OS_WINDOWS 1
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#endif

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#define WTF_OS_WIN ERROR "USE WINDOWS WITH OS NOT WIN"
#define WTF_OS_MAC ERROR "USE MAC_OS_X WITH OS NOT MAC"

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/* OS(UNIX) - Any Unix-like system */
#if   OS(AIX)              \
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    || OS(ANDROID)          \
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    || OS(DARWIN)           \
    || OS(FREEBSD)          \
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    || OS(HURD)             \
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    || OS(LINUX)            \
    || OS(NETBSD)           \
    || OS(OPENBSD)          \
    || OS(QNX)              \
    || OS(SOLARIS)          \
    || defined(unix)        \
    || defined(__unix)      \
    || defined(__unix__)
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#define WTF_OS_UNIX 1
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#endif

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/* Operating environments */
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/* FIXME: these are all mixes of OS, operating environment and policy choices. */
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/* PLATFORM(CHROMIUM) */
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/* PLATFORM(QT) */
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/* PLATFORM(WX) */
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/* PLATFORM(GTK) */
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/* PLATFORM(BLACKBERRY) */
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/* PLATFORM(MAC) */
/* PLATFORM(WIN) */
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#if defined(BUILDING_CHROMIUM__)
#define WTF_PLATFORM_CHROMIUM 1
#elif defined(BUILDING_QT__)
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#define WTF_PLATFORM_QT 1
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#elif defined(BUILDING_WX__)
#define WTF_PLATFORM_WX 1
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#elif defined(BUILDING_GTK__)
#define WTF_PLATFORM_GTK 1
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#elif defined(BUILDING_BLACKBERRY__)
#define WTF_PLATFORM_BLACKBERRY 1
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#elif OS(DARWIN)
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#define WTF_PLATFORM_MAC 1
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#elif OS(WINDOWS)
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#define WTF_PLATFORM_WIN 1
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#endif
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/* PLATFORM(IOS) */
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/* FIXME: this is sometimes used as an OS switch and sometimes for higher-level things */
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#if (defined(TARGET_OS_EMBEDDED) && TARGET_OS_EMBEDDED) || (defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE)
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#define WTF_PLATFORM_IOS 1
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#endif

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/* PLATFORM(IOS_SIMULATOR) */
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#if defined(TARGET_IPHONE_SIMULATOR) && TARGET_IPHONE_SIMULATOR
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#define WTF_PLATFORM_IOS 1
#define WTF_PLATFORM_IOS_SIMULATOR 1
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#endif

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/* Graphics engines */

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/* USE(CG) and PLATFORM(CI) */
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#if PLATFORM(MAC) || PLATFORM(IOS)
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#define WTF_USE_CG 1
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#endif
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#if PLATFORM(MAC) || PLATFORM(IOS) || (PLATFORM(WIN) && USE(CG))
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#define WTF_USE_CA 1
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#endif
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/* USE(SKIA) for Win/Linux/Mac/Android */
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#if PLATFORM(CHROMIUM)
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#if OS(DARWIN)
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#define WTF_USE_SKIA 1
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#define WTF_USE_ICCJPEG 1
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#define WTF_USE_QCMSLIB 1
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#elif OS(ANDROID)
#define WTF_USE_SKIA 1
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#define WTF_USE_LOW_QUALITY_IMAGE_INTERPOLATION 1
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#define WTF_USE_LOW_QUALITY_IMAGE_NO_JPEG_DITHERING 1
#define WTF_USE_LOW_QUALITY_IMAGE_NO_JPEG_FANCY_UPSAMPLING 1
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#else
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#define WTF_USE_SKIA 1
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#define WTF_USE_ICCJPEG 1
#define WTF_USE_QCMSLIB 1
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#endif
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#endif
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#if OS(QNX)
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#define USE_SYSTEM_MALLOC 1
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#endif

#if PLATFORM(BLACKBERRY)
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#define WTF_USE_MERSENNE_TWISTER_19937 1
#define WTF_USE_SKIA 1
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#define WTF_USE_LOW_QUALITY_IMAGE_INTERPOLATION 1
#define WTF_USE_LOW_QUALITY_IMAGE_NO_JPEG_DITHERING 1
#define WTF_USE_LOW_QUALITY_IMAGE_NO_JPEG_FANCY_UPSAMPLING 1
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#endif

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#if PLATFORM(GTK)
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#define WTF_USE_CAIRO 1
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#define ENABLE_GLOBAL_FASTMALLOC_NEW 0
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#endif

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#if OS(WINCE)
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#define WTF_USE_MERSENNE_TWISTER_19937 1
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#endif

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/* On Windows, use QueryPerformanceCounter by default */
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#if OS(WINDOWS)
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#define WTF_USE_QUERY_PERFORMANCE_COUNTER  1
#endif

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#if OS(WINCE) && !PLATFORM(QT)
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#define NOSHLWAPI      /* shlwapi.h not available on WinCe */
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/* MSDN documentation says these functions are provided with uspce.lib.  But we cannot find this file. */
#define __usp10__      /* disable "usp10.h" */
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#define _INC_ASSERT    /* disable "assert.h" */
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#define assert(x)

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#endif  /* OS(WINCE) && !PLATFORM(QT) */
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#if OS(WINCE) && !PLATFORM(QT)
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#define WTF_USE_WCHAR_UNICODE 1
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#elif PLATFORM(GTK)
/* The GTK+ Unicode backend is configurable */
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#else
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#define WTF_USE_ICU_UNICODE 1
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#endif

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#if PLATFORM(MAC) && !PLATFORM(IOS)
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#if CPU(X86_64)
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#define WTF_USE_PLUGIN_HOST_PROCESS 1
#endif
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#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
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#define ENABLE_GESTURE_EVENTS 1
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#define ENABLE_RUBBER_BANDING 1
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#define WTF_USE_SCROLLBAR_PAINTER 1
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#define HAVE_XPC 1
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#endif
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#if !defined(ENABLE_DASHBOARD_SUPPORT)
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#define ENABLE_DASHBOARD_SUPPORT 1
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#endif
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#define WTF_USE_CF 1
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#define WTF_USE_PTHREADS 1
#define HAVE_PTHREAD_RWLOCK 1
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#define HAVE_READLINE 1
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#define HAVE_RUNLOOP_TIMER 1
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#define ENABLE_FULLSCREEN_API 1
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#define ENABLE_SMOOTH_SCROLLING 1
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#define ENABLE_WEB_ARCHIVE 1
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#define ENABLE_WEB_AUDIO 1
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#if defined(ENABLE_VIDEO)
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#define ENABLE_VIDEO_TRACK 1
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#endif
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#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1080
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#define HAVE_LAYER_HOSTING_IN_WINDOW_SERVER 1
#endif
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#define WTF_USE_APPKIT 1
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#define WTF_USE_SECURITY_FRAMEWORK 1
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#endif /* PLATFORM(MAC) && !PLATFORM(IOS) */
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#if PLATFORM(CHROMIUM) && OS(DARWIN)
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#define WTF_USE_CF 1
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#define WTF_USE_PTHREADS 1
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#define HAVE_PTHREAD_RWLOCK 1
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#define WTF_USE_WK_SCROLLBAR_PAINTER 1
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#endif

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#if PLATFORM(IOS)
#define DONT_FINALIZE_ON_MAIN_THREAD 1
#endif

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#if PLATFORM(QT) && OS(DARWIN)
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#define WTF_USE_CF 1
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#endif
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#if OS(DARWIN) && !PLATFORM(GTK) && !PLATFORM(QT)
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#define ENABLE_PURGEABLE_MEMORY 1
#endif

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#if PLATFORM(IOS)
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#define ENABLE_CONTEXT_MENUS 0
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#define ENABLE_DRAG_SUPPORT 0
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#define ENABLE_GEOLOCATION 1
#define ENABLE_ICONDATABASE 0
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#define ENABLE_INSPECTOR 1
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#define ENABLE_NETSCAPE_PLUGIN_API 0
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#define ENABLE_ORIENTATION_EVENTS 1
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#define ENABLE_REPAINT_THROTTLING 1
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#define ENABLE_WEB_ARCHIVE 1
#define HAVE_NETWORK_CFDATA_ARRAY_CALLBACK 1
#define HAVE_PTHREAD_RWLOCK 1
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#define HAVE_READLINE 1
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#define WTF_USE_CF 1
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#define WTF_USE_CFNETWORK 1
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#define WTF_USE_PTHREADS 1
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#if PLATFORM(IOS_SIMULATOR)
    #define ENABLE_JIT 0
    #define ENABLE_YARR_JIT 0
#else
    #define ENABLE_JIT 1
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    #define ENABLE_LLINT 1
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    #define ENABLE_YARR_JIT 1
#endif

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#define WTF_USE_APPKIT 0
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#define WTF_USE_SECURITY_FRAMEWORK 0
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#endif

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#if PLATFORM(WIN) && !OS(WINCE)
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#define WTF_USE_CF 1
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#endif

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#if PLATFORM(WIN) && !OS(WINCE) && !PLATFORM(CHROMIUM) && !PLATFORM(WIN_CAIRO)
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#define WTF_USE_CFNETWORK 1
#endif

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#if USE(CFNETWORK) || PLATFORM(MAC) || PLATFORM(IOS)
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#define WTF_USE_CFURLCACHE 1
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#define WTF_USE_CFURLSTORAGESESSIONS 1
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#endif

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#if PLATFORM(WIN) && !OS(WINCE) && !PLATFORM(CHROMIUM) && !PLATFORM(QT)
#define ENABLE_WEB_ARCHIVE 1
#endif

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#if PLATFORM(WIN) && !OS(WINCE) && !PLATFORM(CHROMIUM) && !PLATFORM(WIN_CAIRO) && !PLATFORM(QT)
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#define ENABLE_FULLSCREEN_API 1
#endif

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#if PLATFORM(WX)
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#if !CPU(PPC)
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#if !defined(ENABLE_ASSEMBLER)
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#define ENABLE_ASSEMBLER 1
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#endif
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#define ENABLE_JIT 1
#endif
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#define ENABLE_GLOBAL_FASTMALLOC_NEW 0
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#define ENABLE_LLINT 0
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#if OS(DARWIN)
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#define WTF_USE_CF 1
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#define ENABLE_WEB_ARCHIVE 1
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#endif
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#endif

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#if OS(UNIX) && (PLATFORM(GTK) || PLATFORM(QT))
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#define WTF_USE_PTHREADS 1
#define HAVE_PTHREAD_RWLOCK 1
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#endif

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#if !defined(HAVE_ACCESSIBILITY)
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#if PLATFORM(IOS) || PLATFORM(MAC) || PLATFORM(WIN) || PLATFORM(GTK) || (PLATFORM(CHROMIUM) && !OS(ANDROID))
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#define HAVE_ACCESSIBILITY 1
#endif
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#endif /* !defined(HAVE_ACCESSIBILITY) */
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#if OS(UNIX)
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#define HAVE_SIGNAL_H 1
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#define WTF_USE_OS_RANDOMNESS 1
#endif

#if (OS(FREEBSD) || OS(OPENBSD)) && !defined(__GLIBC__)
#define HAVE_PTHREAD_NP_H 1
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#endif

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#if !defined(HAVE_VASPRINTF)
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#if !COMPILER(MSVC) && !COMPILER(RVCT) && !COMPILER(MINGW) && !(COMPILER(GCC) && OS(QNX))
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#define HAVE_VASPRINTF 1
#endif
#endif

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#if !defined(HAVE_STRNSTR)
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#if OS(DARWIN) || (OS(FREEBSD) && !defined(__GLIBC__))
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#define HAVE_STRNSTR 1
#endif
#endif

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#if !OS(WINDOWS) && !OS(SOLARIS) \
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    && !OS(RVCT) \
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    && !OS(ANDROID)
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#define HAVE_TM_GMTOFF 1
#define HAVE_TM_ZONE 1
#define HAVE_TIMEGM 1
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#endif
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#if OS(DARWIN)
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#define HAVE_ERRNO_H 1
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#define HAVE_LANGINFO_H 1
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#define HAVE_MMAP 1
#define HAVE_MERGESORT 1
#define HAVE_STRINGS_H 1
#define HAVE_SYS_PARAM_H 1
#define HAVE_SYS_TIME_H 1
#define HAVE_SYS_TIMEB_H 1
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#define WTF_USE_ACCELERATE 1
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#if PLATFORM(IOS) || __MAC_OS_X_VERSION_MIN_REQUIRED >= 1060
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#define HAVE_DISPATCH_H 1
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#define HAVE_HOSTED_CORE_ANIMATION 1
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#if !PLATFORM(IOS)
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#define HAVE_MADV_FREE_REUSE 1
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#define HAVE_MADV_FREE 1
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#define HAVE_PTHREAD_SETNAME_NP 1
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#endif
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#endif

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#if PLATFORM(IOS)
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#define HAVE_MADV_FREE 1
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#define HAVE_PTHREAD_SETNAME_NP 1
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#endif

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#elif OS(WINDOWS)
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#if !OS(WINCE)
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#define HAVE_SYS_TIMEB_H 1
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#define HAVE_ALIGNED_MALLOC 1
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#define HAVE_ISDEBUGGERPRESENT 1
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#endif
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#define HAVE_VIRTUALALLOC 1
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#define WTF_USE_OS_RANDOMNESS 1
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#elif OS(QNX)
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#define HAVE_ERRNO_H 1
#define HAVE_MMAP 1
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#define HAVE_MADV_FREE_REUSE 1
#define HAVE_MADV_FREE 1
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#define HAVE_STRINGS_H 1
#define HAVE_SYS_PARAM_H 1
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#define HAVE_SYS_TIME_H 1
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#define WTF_USE_PTHREADS 1
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#elif OS(ANDROID)

#define HAVE_ERRNO_H 1
#define HAVE_NMAP 1
#define HAVE_STRINGS_H 1
#define HAVE_SYS_PARAM_H 1
#define HAVE_SYS_TIME_H 1

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#else

/* FIXME: is this actually used or do other platforms generate their own config.h? */

#define HAVE_ERRNO_H 1
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#define HAVE_LANGINFO_H 1
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#define HAVE_MMAP 1
#define HAVE_STRINGS_H 1
#define HAVE_SYS_PARAM_H 1
#define HAVE_SYS_TIME_H 1

#endif

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/* ENABLE macro defaults */

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#if PLATFORM(QT)
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/* We must not customize the global operator new and delete for the Qt port. */
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#define ENABLE_GLOBAL_FASTMALLOC_NEW 0
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#if !OS(UNIX)
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#define USE_SYSTEM_MALLOC 1
#endif
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#endif

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#if !defined(ENABLE_ICONDATABASE)
#define ENABLE_ICONDATABASE 1
#endif
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#if !defined(ENABLE_SQL_DATABASE)
#define ENABLE_SQL_DATABASE 1
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#endif

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#if !defined(ENABLE_JAVASCRIPT_DEBUGGER)
#define ENABLE_JAVASCRIPT_DEBUGGER 1
#endif

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#if !defined(ENABLE_FTPDIR)
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#define ENABLE_FTPDIR 1
#endif

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#if !defined(ENABLE_CONTEXT_MENUS)
#define ENABLE_CONTEXT_MENUS 1
#endif

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#if !defined(ENABLE_DRAG_SUPPORT)
#define ENABLE_DRAG_SUPPORT 1
#endif

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#if !defined(ENABLE_INSPECTOR)
#define ENABLE_INSPECTOR 1
#endif

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#if !defined(ENABLE_NETSCAPE_PLUGIN_API)
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#define ENABLE_NETSCAPE_PLUGIN_API 1
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#endif

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#if !defined(ENABLE_GLOBAL_FASTMALLOC_NEW)
#define ENABLE_GLOBAL_FASTMALLOC_NEW 1
#endif

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#if !defined(ENABLE_PARSED_STYLE_SHEET_CACHING)
#define ENABLE_PARSED_STYLE_SHEET_CACHING 1
#endif

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#if !defined(ENABLE_SUBPIXEL_LAYOUT)
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#if PLATFORM(CHROMIUM)
#define ENABLE_SUBPIXEL_LAYOUT 1 
#else
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#define ENABLE_SUBPIXEL_LAYOUT 0
#endif
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#endif
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#if !defined(ENABLE_GESTURE_ANIMATION)
#if PLATFORM(QT) || !ENABLE(SMOOTH_SCROLLING)
#define ENABLE_GESTURE_ANIMATION 0
#else
#define ENABLE_GESTURE_ANIMATION 1
#endif
#endif

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#if !defined(ENABLE_SATURATED_LAYOUT_ARITHMETIC)
#define ENABLE_SATURATED_LAYOUT_ARITHMETIC 0
#endif

#if ENABLE(ENABLE_SATURATED_LAYOUT_ARITHMETIC) && !ENABLE(ENABLE_SUBPIXEL_LAYOUT)
#error "ENABLE_SATURATED_LAYOUT_ARITHMETIC requires ENABLE_SUBPIXEL_LAYOUT"
#endif

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#define ENABLE_DEBUG_WITH_BREAKPOINT 0
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#define ENABLE_SAMPLING_COUNTERS 0
#define ENABLE_SAMPLING_FLAGS 0
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#define ENABLE_SAMPLING_REGIONS 0
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#define ENABLE_OPCODE_SAMPLING 0
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#define ENABLE_CODEBLOCK_SAMPLING 0
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#if ENABLE(CODEBLOCK_SAMPLING) && !ENABLE(OPCODE_SAMPLING)
#error "CODEBLOCK_SAMPLING requires OPCODE_SAMPLING"
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#endif
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#if ENABLE(OPCODE_SAMPLING) || ENABLE(SAMPLING_FLAGS) || ENABLE(SAMPLING_REGIONS)
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#define ENABLE_SAMPLING_THREAD 1
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#endif
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#if !defined(ENABLE_TEXT_CARET) && !PLATFORM(IOS)
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#define ENABLE_TEXT_CARET 1
#endif

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#if !defined(WTF_USE_JSVALUE64) && !defined(WTF_USE_JSVALUE32_64)
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#if (CPU(X86_64) && (OS(UNIX) || OS(WINDOWS))) \
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    || (CPU(IA64) && !CPU(IA64_32)) \
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    || CPU(ALPHA) \
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    || CPU(SPARC64) \
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    || CPU(S390X) \
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    || CPU(PPC64)
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#define WTF_USE_JSVALUE64 1
#else
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#define WTF_USE_JSVALUE32_64 1
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#endif
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#endif /* !defined(WTF_USE_JSVALUE64) && !defined(WTF_USE_JSVALUE32_64) */
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/* Disable the JIT on versions of GCC prior to 4.1 */
#if !defined(ENABLE_JIT) && COMPILER(GCC) && !GCC_VERSION_AT_LEAST(4, 1, 0)
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#define ENABLE_JIT 0
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#endif

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/* JIT is not implemented for Windows 64-bit */
#if !defined(ENABLE_JIT) && OS(WINDOWS) && CPU(X86_64)
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#define ENABLE_JIT 0
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#define ENABLE_YARR_JIT 0
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#endif

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#if !defined(ENABLE_JIT) && CPU(SH4) && PLATFORM(QT)
#define ENABLE_JIT 1
#endif

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/* The JIT is enabled by default on all x86, x86-64, ARM & MIPS platforms. */
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#if !defined(ENABLE_JIT) \
    && (CPU(X86) || CPU(X86_64) || CPU(ARM) || CPU(MIPS)) \
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    && (OS(DARWIN) || !COMPILER(GCC) || GCC_VERSION_AT_LEAST(4, 1, 0)) \
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    && !OS(WINCE) \
    && !OS(QNX)
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#define ENABLE_JIT 1
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#endif

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/* If possible, try to enable a disassembler. This is optional. We proceed in two
   steps: first we try to find some disassembler that we can use, and then we
   decide if the high-level disassembler API can be enabled. */
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#if !defined(WTF_USE_UDIS86) && ENABLE(JIT) && (PLATFORM(MAC) || (PLATFORM(QT) && OS(LINUX))) \
    && (CPU(X86) || CPU(X86_64))
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#define WTF_USE_UDIS86 1
#endif

#if !defined(ENABLE_DISASSEMBLER) && USE(UDIS86)
#define ENABLE_DISASSEMBLER 1
#endif

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/* On the GTK+ port we take an extra precaution for LLINT support:
 * We disable it on x86 builds if the build target doesn't support SSE2
 * instructions (LLINT requires SSE2 on this platform). */
#if !defined(ENABLE_LLINT) && PLATFORM(GTK) && CPU(X86) && COMPILER(GCC) \
    && !defined(__SSE2__)
#define ENABLE_LLINT 0
#endif

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/* On some of the platforms where we have a JIT, we want to also have the 
   low-level interpreter. */
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#if !defined(ENABLE_LLINT) \
    && ENABLE(JIT) \
    && (OS(DARWIN) || OS(LINUX)) \
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    && (PLATFORM(MAC) || PLATFORM(IOS) || PLATFORM(GTK) || (PLATFORM(QT) && OS(LINUX))) \
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    && (CPU(X86) || CPU(X86_64) || CPU(ARM_THUMB2))
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#define ENABLE_LLINT 1
#endif

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#if !defined(ENABLE_DFG_JIT) && ENABLE(JIT) && !COMPILER(MSVC)
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/* Enable the DFG JIT on X86 and X86_64.  Only tested on Mac and GNU/Linux. */
#if (CPU(X86) || CPU(X86_64)) && (PLATFORM(MAC) || OS(LINUX))
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#define ENABLE_DFG_JIT 1
#endif
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/* Enable the DFG JIT on ARMv7.  Only tested on iOS. */
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#if CPU(ARM_THUMB2) && (PLATFORM(IOS) || PLATFORM(BLACKBERRY))
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#define ENABLE_DFG_JIT 1
#endif
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/* Enable the DFG JIT on ARM. */
#if CPU(ARM_TRADITIONAL)
#define ENABLE_DFG_JIT 1
#endif
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#endif
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/* If the jit is not available, enable the LLInt C Loop: */
#if !ENABLE(JIT)
#undef ENABLE_LLINT        /* Undef so that we can redefine it. */
#undef ENABLE_LLINT_C_LOOP /* Undef so that we can redefine it. */
#undef ENABLE_DFG_JIT      /* Undef so that we can redefine it. */
#define ENABLE_LLINT 1
#define ENABLE_LLINT_C_LOOP 1
#define ENABLE_DFG_JIT 0
#endif

/* Do a sanity check to make sure that we at least have one execution engine in
   use: */
#if !(ENABLE(JIT) || ENABLE(LLINT))
#error You have to have at least one execution model enabled to build JSC
#endif

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/* Profiling of types and values used by JIT code. DFG_JIT depends on it, but you
   can enable it manually with DFG turned off if you want to use it as a standalone
   profiler. In that case, you probably want to also enable VERBOSE_VALUE_PROFILE
   below. */
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#if !defined(ENABLE_VALUE_PROFILER) && ENABLE(DFG_JIT)
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#define ENABLE_VALUE_PROFILER 1
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#endif

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#if !defined(ENABLE_VERBOSE_VALUE_PROFILE) && ENABLE(VALUE_PROFILER)
#define ENABLE_VERBOSE_VALUE_PROFILE 0
#endif

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#if !defined(ENABLE_SIMPLE_HEAP_PROFILING)
#define ENABLE_SIMPLE_HEAP_PROFILING 0
#endif

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/* Counts uses of write barriers using sampling counters. Be sure to also
   set ENABLE_SAMPLING_COUNTERS to 1. */
#if !defined(ENABLE_WRITE_BARRIER_PROFILING)
#define ENABLE_WRITE_BARRIER_PROFILING 0
#endif

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/* Configure the JIT */
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#if CPU(X86) && COMPILER(MSVC)
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#define JSC_HOST_CALL __fastcall
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#elif CPU(X86) && COMPILER(GCC)
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#define JSC_HOST_CALL __attribute__ ((fastcall))
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#else
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#define JSC_HOST_CALL
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#endif

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/* Configure the interpreter */
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#if COMPILER(GCC) || (RVCT_VERSION_AT_LEAST(4, 0, 0, 0) && defined(__GNUC__))