Attachment 348359 Details for Bug 182891 – Patch

[patch] Patch

bug-182891.diff (text/plain), 16.27 KB, created by Don Olmstead on 2018-08-28 16:39:45 PDT

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Creator: Don Olmstead

Created: 2018-08-28 16:39:45 PDT

Size: 16.27 KB

patch

obsolete

>diff --git a/ChangeLog b/ChangeLog
>index f9d6ae0a890..3bbd16d0ce7 100644
>--- a/ChangeLog
>+++ b/ChangeLog
>@@ -1,3 +1,17 @@
>+2018-08-28  Don Olmstead  <don.olmstead@sony.com>
>+
>+        [CMake] Replace AVFoundationSupport.py using CMake
>+        https://bugs.webkit.org/show_bug.cgi?id=182891
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Add CMake checks for AVFoundationSupport support.
>+
>+        * Source/cmake/OptionsAppleWin.cmake:
>+        * Source/cmake/OptionsWin.cmake:
>+        * Source/cmake/WebKitCommon.cmake:
>+        * Source/cmake/WebKitFeatures.cmake:
>+
> 2018-08-27  Aditya Keerthi  <akeerthi@apple.com>
> 
>         Consolidate ENABLE_INPUT_TYPE_COLOR and ENABLE_INPUT_TYPE_COLOR_POPOVER
>diff --git a/Source/WTF/ChangeLog b/Source/WTF/ChangeLog
>index 96cac60b419..ab6d4576c36 100644
>--- a/Source/WTF/ChangeLog
>+++ b/Source/WTF/ChangeLog
>@@ -1,3 +1,14 @@
>+2018-08-28  Don Olmstead  <don.olmstead@sony.com>
>+
>+        [CMake] Replace AVFoundationSupport.py using CMake
>+        https://bugs.webkit.org/show_bug.cgi?id=182891
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Rely on CMake checks rather than being explicit.
>+
>+        * wtf/Platform.h:
>+
> 2018-08-27  Yusuke Suzuki  <yusukesuzuki@slowstart.org>
> 
>         [WebAssembly] Parse wasm modules in a streaming fashion
>diff --git a/Source/WTF/wtf/Platform.h b/Source/WTF/wtf/Platform.h
>index 0c6efb86298..305159c811e 100644
>--- a/Source/WTF/wtf/Platform.h
>+++ b/Source/WTF/wtf/Platform.h
>@@ -1143,11 +1143,11 @@
> #endif
> #endif
> 
>-#if PLATFORM(IOS) || PLATFORM(MAC) || (OS(WINDOWS) && USE(CG))
>+#if PLATFORM(IOS) || PLATFORM(MAC)
> #define HAVE_AVFOUNDATION_MEDIA_SELECTION_GROUP 1
> #endif
> 
>-#if PLATFORM(IOS) || PLATFORM(MAC) || (OS(WINDOWS) && USE(CG))
>+#if PLATFORM(IOS) || PLATFORM(MAC)
> #define HAVE_AVFOUNDATION_LEGIBLE_OUTPUT_SUPPORT 1
> #define HAVE_MEDIA_ACCESSIBILITY_FRAMEWORK 1
> #endif
>diff --git a/Source/WebCore/ChangeLog b/Source/WebCore/ChangeLog
>index af21fff3daf..ee6f5ce64ea 100644
>--- a/Source/WebCore/ChangeLog
>+++ b/Source/WebCore/ChangeLog
>@@ -1,3 +1,17 @@
>+2018-08-28  Don Olmstead  <don.olmstead@sony.com>
>+
>+        [CMake] Replace AVFoundationSupport.py using CMake
>+        https://bugs.webkit.org/show_bug.cgi?id=182891
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        No change in behavior.
>+
>+        Remove references to PAL derived sources.
>+
>+        * PlatformWin.cmake:
>+        * config.h:
>+
> 2018-08-28  Aditya Keerthi  <akeerthi@apple.com>
> 
>         [macOS] Color wells should appear rounded and textured
>diff --git a/Source/WebCore/PAL/AVFoundationSupport.py b/Source/WebCore/PAL/AVFoundationSupport.py
>deleted file mode 100644
>index 94d0e6238a8..00000000000
>--- a/Source/WebCore/PAL/AVFoundationSupport.py
>+++ /dev/null
>@@ -1,64 +0,0 @@
>-#!/usr/bin/env python
>-
>-# Copyright (C) 2015 Apple Inc.  All rights reserved.
>-#
>-# 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.
>-# 3.  Neither the name of Apple puter, Inc. ("Apple") nor the names of
>-#     its contributors may be used to endorse or promote products derived
>-#     from this software without specific prior written permission.
>-#
>-# THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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 OF
>-# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>-
>-import re
>-import sys
>-import os
>-
>-
>-def lookFor(relativePath):
>-    return os.path.isfile(sys.argv[1] + relativePath)
>-
>-
>-def fileContains(relativePath, regexp):
>-    with open(sys.argv[1] + relativePath) as file:
>-        for line in file:
>-            if regexp.search(line):
>-                return True
>-    return False
>-
>-
>-print("/* Identifying AVFoundation Support */")
>-if lookFor("/include/AVFoundationCF/AVCFBase.h"):
>-    print("#define HAVE_AVCF 1")
>-if lookFor("/include/AVFoundationCF/AVCFPlayerItemLegibleOutput.h"):
>-    print("#define HAVE_AVCF_LEGIBLE_OUTPUT 1")
>-if lookFor("/include/AVFoundationCF/AVCFAssetResourceLoader.h"):
>-    print("#define HAVE_AVFOUNDATION_LOADER_DELEGATE 1")
>-if lookFor("/include/AVFoundationCF/AVCFAsset.h"):
>-    regexp = re.compile("AVCFURLAssetIsPlayableExtendedMIMEType")
>-    if fileContains("/include/AVFoundationCF/AVCFAsset.h", regexp):
>-        print("#define HAVE_AVCFURL_PLAYABLE_MIMETYPE 1")
>-if lookFor("/include/QuartzCore/CACFLayer.h"):
>-    regexp = re.compile("CACFLayerSetContentsScale")
>-    if fileContains("/include/QuartzCore/CACFLayer.h", regexp):
>-        print("#define HAVE_CACFLAYER_SETCONTENTSSCALE 1")
>-if lookFor("/include/AVFoundationCF/AVCFPlayerItemLegibleOutput.h"):
>-    regexp = re.compile("kAVCFPlayerItemLegibleOutput_CallbacksVersion_2")
>-    if fileContains("/include/AVFoundationCF/AVCFPlayerItemLegibleOutput.h", regexp):
>-        print("#define HAVE_AVCFPLAYERITEM_CALLBACK_VERSION_2 1")
>diff --git a/Source/WebCore/PAL/ChangeLog b/Source/WebCore/PAL/ChangeLog
>index 42825d3baf6..985c1ad056f 100644
>--- a/Source/WebCore/PAL/ChangeLog
>+++ b/Source/WebCore/PAL/ChangeLog
>@@ -1,3 +1,16 @@
>+2018-08-28  Don Olmstead  <don.olmstead@sony.com>
>+
>+        [CMake] Replace AVFoundationSupport.py using CMake
>+        https://bugs.webkit.org/show_bug.cgi?id=182891
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Remove AVFoundationSupport.py file and invokation.
>+
>+        * AVFoundationSupport.py: Removed.
>+        * config.h:
>+        * pal/PlatformWin.cmake:
>+
> 2018-08-27  Keith Rollin  <krollin@apple.com>
> 
>         Unreviewed build fix -- disable LTO for production builds
>diff --git a/Source/WebCore/PAL/config.h b/Source/WebCore/PAL/config.h
>index e01af2feb39..260c06075c3 100644
>--- a/Source/WebCore/PAL/config.h
>+++ b/Source/WebCore/PAL/config.h
>@@ -25,10 +25,6 @@
> 
> #include <wtf/Platform.h>
> 
>-#if PLATFORM(WIN)
>-#include <PALHeaderDetection.h>
>-#endif
>-
> #include <pal/ExportMacros.h>
> 
> #ifdef __cplusplus
>@@ -44,15 +40,3 @@
> #endif
> 
> #include <wtf/DisallowCType.h>
>-
>-#if PLATFORM(WIN) && USE(CG) && HAVE(AVCF)
>-#define USE_AVFOUNDATION 1
>-
>-#if HAVE(AVCF_LEGIBLE_OUTPUT)
>-#define USE_AVFOUNDATION 1
>-#define HAVE_AVFOUNDATION_MEDIA_SELECTION_GROUP 1
>-#define HAVE_AVFOUNDATION_LEGIBLE_OUTPUT_SUPPORT 1
>-#define HAVE_MEDIA_ACCESSIBILITY_FRAMEWORK 1
>-#endif
>-
>-#endif
>diff --git a/Source/WebCore/PAL/pal/PlatformWin.cmake b/Source/WebCore/PAL/pal/PlatformWin.cmake
>index cbcbcb93978..4b1176c63a7 100644
>--- a/Source/WebCore/PAL/pal/PlatformWin.cmake
>+++ b/Source/WebCore/PAL/pal/PlatformWin.cmake
>@@ -13,7 +13,6 @@ list(APPEND PAL_SOURCES
> list(APPEND PAL_INCLUDE_DIRECTORIES
>     "${CMAKE_BINARY_DIR}"
>     "${CMAKE_BINARY_DIR}/../include/private"
>-    "${DERIVED_SOURCES_PAL_DIR}"
> )
> 
> if (${WTF_PLATFORM_WIN_CAIRO})
>@@ -23,12 +22,3 @@ else ()
> endif ()
> 
> set(PAL_OUTPUT_NAME PAL${DEBUG_SUFFIX})
>-
>-# Generate PALHeaderDetection.h by PAL_PreBuild
>-add_custom_target(PAL_PreBuild SOURCES "${DERIVED_SOURCES_PAL_DIR}/PALHeaderDetection.h")
>-add_custom_command(
>-    OUTPUT "${DERIVED_SOURCES_PAL_DIR}/PALHeaderDetection.h"
>-    WORKING_DIRECTORY "${DERIVED_SOURCES_PAL_DIR}"
>-    COMMAND ${PYTHON_EXECUTABLE} ${PAL_DIR}/AVFoundationSupport.py ${WEBKIT_LIBRARIES_DIR} > PALHeaderDetection.h
>-    VERBATIM)
>-add_dependencies(PAL PAL_PreBuild)
>diff --git a/Source/WebCore/PlatformWin.cmake b/Source/WebCore/PlatformWin.cmake
>index ff3994a99f8..a24a9195360 100644
>--- a/Source/WebCore/PlatformWin.cmake
>+++ b/Source/WebCore/PlatformWin.cmake
>@@ -15,7 +15,6 @@ list(APPEND WebCore_INCLUDE_DIRECTORIES
>     "${WEBCORE_DIR}/platform/win"
>     "${THIRDPARTY_DIR}/ANGLE/include"
>     "${THIRDPARTY_DIR}/ANGLE/include/egl"
>-    "${DERIVED_SOURCES_PAL_DIR}"
> )
> 
> list(APPEND WebCore_SOURCES
>@@ -317,7 +316,7 @@ endif ()
> 
> WEBKIT_MAKE_FORWARDING_HEADERS(WebCore
>     DIRECTORIES ${WebCore_FORWARDING_HEADERS_DIRECTORIES}
>-    DERIVED_SOURCE_DIRECTORIES ${DERIVED_SOURCES_WEBCORE_DIR} ${DERIVED_SOURCES_PAL_DIR}
>+    DERIVED_SOURCE_DIRECTORIES ${DERIVED_SOURCES_WEBCORE_DIR}
>     FLATTENED
> )
> 
>diff --git a/Source/WebCore/config.h b/Source/WebCore/config.h
>index 6e5c16b3026..8f450508591 100644
>--- a/Source/WebCore/config.h
>+++ b/Source/WebCore/config.h
>@@ -29,10 +29,6 @@
> #define USE_FILE_LOCK 1
> #endif
> 
>-#if PLATFORM(WIN)
>-#include <PALHeaderDetection.h>
>-#endif
>-
> #include "PlatformExportMacros.h"
> #include <JavaScriptCore/JSExportMacros.h>
> #include <pal/ExportMacros.h>
>@@ -74,15 +70,3 @@ typedef float CGFloat;
> #define CGFLOAT_DEFINED 1
> #endif
> #endif /* USE(CG) */
>-
>-#if PLATFORM(WIN) && USE(CG) && HAVE(AVCF)
>-#define USE_AVFOUNDATION 1
>-
>-#if HAVE(AVCF_LEGIBLE_OUTPUT)
>-#define USE_AVFOUNDATION 1
>-#define HAVE_AVFOUNDATION_MEDIA_SELECTION_GROUP 1
>-#define HAVE_AVFOUNDATION_LEGIBLE_OUTPUT_SUPPORT 1
>-#define HAVE_MEDIA_ACCESSIBILITY_FRAMEWORK 1
>-#endif
>-
>-#endif
>diff --git a/Source/WebKitLegacy/win/ChangeLog b/Source/WebKitLegacy/win/ChangeLog
>index 283618c30f6..2ae30cfff43 100644
>--- a/Source/WebKitLegacy/win/ChangeLog
>+++ b/Source/WebKitLegacy/win/ChangeLog
>@@ -1,3 +1,14 @@
>+2018-08-28  Don Olmstead  <don.olmstead@sony.com>
>+
>+        [CMake] Replace AVFoundationSupport.py using CMake
>+        https://bugs.webkit.org/show_bug.cgi?id=182891
>+
>+        Reviewed by NOBODY (OOPS!).
>+
>+        Remove references to config.h from WebCore.
>+
>+        * WebKitPrefix.h:
>+
> 2018-08-21  Wenson Hsieh  <wenson_hsieh@apple.com>
> 
>         [Attachment Support] Augment _WKAttachment SPI to handle NSFileWrappers in addition to NSData
>diff --git a/Source/WebKitLegacy/win/WebKitPrefix.h b/Source/WebKitLegacy/win/WebKitPrefix.h
>index 352531092e5..3fbacf63db6 100644
>--- a/Source/WebKitLegacy/win/WebKitPrefix.h
>+++ b/Source/WebKitLegacy/win/WebKitPrefix.h
>@@ -35,9 +35,38 @@
> #include "cmakeconfig.h"
> #endif
> 
>+#include <JavaScriptCore/JSExportMacros.h>
>+#include <WebCore/PlatformExportMacros.h>
>+#include <pal/ExportMacros.h>
>+
>+#if USE(CF)
> #include <CoreFoundation/CoreFoundation.h>
>+#endif
>+
> #include <WebKit.h>
>-#include "config.h"
>+
>+#ifdef __cplusplus
>+
>+// These undefs match up with defines in WebCorePrefix.h for Mac OS X.
>+// Helps us catch if anyone uses new or delete by accident in code and doesn't include "config.h".
>+#undef new
>+#undef delete
>+#include <wtf/FastMalloc.h>
>+
>+#endif
>+
>+#include <wtf/DisallowCType.h>
>+
>+#if USE(CG)
>+#ifndef CGFLOAT_DEFINED
>+#if (defined(__LP64__) && __LP64__) || (defined(__x86_64__) && __x86_64__) || defined(_M_X64) || defined(__amd64__)
>+typedef double CGFloat;
>+#else
>+typedef float CGFloat;
>+#endif
>+#define CGFLOAT_DEFINED 1
>+#endif
>+#endif /* USE(CG) */
> 
> // WebKit.dll is expected to export the symbols in WebCore that have been marked
> // as WEBCORE_EXPORT
>diff --git a/Source/cmake/OptionsAppleWin.cmake b/Source/cmake/OptionsAppleWin.cmake
>index 7a5dac483ac..05f07195342 100644
>--- a/Source/cmake/OptionsAppleWin.cmake
>+++ b/Source/cmake/OptionsAppleWin.cmake
>@@ -23,6 +23,48 @@ if (${USE_DIRECT2D})
> else ()
>     SET_AND_EXPOSE_TO_BUILD(USE_CA ON)
>     SET_AND_EXPOSE_TO_BUILD(USE_CG ON)
>+
>+    set(CMAKE_REQUIRED_INCLUDES ${WEBKIT_LIBRARIES_INCLUDE_DIR})
>+    set(CMAKE_REQUIRED_LIBRARIES
>+        "${WEBKIT_LIBRARIES_LINK_DIR}/CoreFoundation${DEBUG_SUFFIX}.lib"
>+        "${WEBKIT_LIBRARIES_LINK_DIR}/AVFoundationCF${DEBUG_SUFFIX}.lib"
>+        "${WEBKIT_LIBRARIES_LINK_DIR}/QuartzCore${DEBUG_SUFFIX}.lib"
>+        "${WEBKIT_LIBRARIES_LINK_DIR}/libdispatch${DEBUG_SUFFIX}.lib"
>+    )
>+
>+    WEBKIT_CHECK_HAVE_INCLUDE(HAVE_AVCF AVFoundationCF/AVCFBase.h)
>+
>+    if (HAVE_AVCF)
>+         SET_AND_EXPOSE_TO_BUILD(USE_AVFOUNDATION ON)
>+    endif ()
>+
>+    WEBKIT_CHECK_HAVE_SYMBOL(HAVE_AVCF_LEGIBLE_OUTPUT AVCFPlayerItemLegibleOutputSetCallbacks "TargetConditionals.h;dispatch/dispatch.h;AVFoundationCF/AVFoundationCF.h;AVFoundationCF/AVCFPlayerItemLegibleOutput.h")
>+    WEBKIT_CHECK_HAVE_SYMBOL(HAVE_AVFOUNDATION_LOADER_DELEGATE AVCFAssetResourceLoaderSetCallbacks "TargetConditionals.h;dispatch/dispatch.h;AVFoundationCF/AVFoundationCF.h")
>+    WEBKIT_CHECK_HAVE_SYMBOL(HAVE_AVCFURL_PLAYABLE_MIMETYPE AVCFURLAssetIsPlayableExtendedMIMEType "TargetConditionals.h;dispatch/dispatch.h;AVFoundationCF/AVFoundationCF.h")
>+
>+    # CMake cannot identify an enum through a symbol check so a source file is required
>+    WEBKIT_CHECK_SOURCE_COMPILES(HAVE_AVCFPLAYERITEM_CALLBACK_VERSION_2 "
>+    #include <AVFoundationCF/AVFoundationCF.h>
>+    #include <AVFoundationCF/AVCFPlayerItemLegibleOutput.h>
>+    #include <CoreFoundation/CoreFoundation.h>
>+    #include <dispatch/dispatch.h>
>+
>+    int main() {
>+        CFArrayRef types = CFArrayCreate(kCFAllocatorDefault, nullptr, 0, nullptr);
>+        AVCFPlayerItemLegibleOutputRef legibleOutput = AVCFPlayerItemLegibleOutputCreateWithMediaSubtypesForNativeRepresentation(kCFAllocatorDefault, types);
>+        AVCFPlayerItemLegibleOutputCallbacks callbackInfo;
>+        callbackInfo.version = kAVCFPlayerItemLegibleOutput_CallbacksVersion_2;
>+        dispatch_queue_t dispatchQueue = dispatch_queue_create(\"test\", DISPATCH_QUEUE_SERIAL);
>+        AVCFPlayerItemLegibleOutputSetCallbacks(legibleOutput, &callbackInfo, dispatchQueue);
>+    }")
>+
>+    if (HAVE_AVCF_LEGIBLE_OUTPUT)
>+        SET_AND_EXPOSE_TO_BUILD(HAVE_AVFOUNDATION_MEDIA_SELECTION_GROUP ON)
>+        SET_AND_EXPOSE_TO_BUILD(HAVE_AVFOUNDATION_LEGIBLE_OUTPUT_SUPPORT ON)
>+        SET_AND_EXPOSE_TO_BUILD(HAVE_MEDIA_ACCESSIBILITY_FRAMEWORK ON)
>+    endif ()
>+
>+    WEBKIT_CHECK_HAVE_SYMBOL(HAVE_CACFLAYER_SETCONTENTSSCALE CACFLayerSetContentsScale QuartzCore/CoreAnimationCF.h)
> endif ()
> 
> # Warnings as errors (ignore narrowing conversions)
>diff --git a/Source/cmake/OptionsWin.cmake b/Source/cmake/OptionsWin.cmake
>index a604d9821b5..38292f3c6e7 100644
>--- a/Source/cmake/OptionsWin.cmake
>+++ b/Source/cmake/OptionsWin.cmake
>@@ -101,9 +101,9 @@ endif ()
> 
> if (NOT WEBKIT_LIBRARIES_DIR)
>     if (DEFINED ENV{WEBKIT_LIBRARIES})
>-        set(WEBKIT_LIBRARIES_DIR "$ENV{WEBKIT_LIBRARIES}")
>+        file(TO_CMAKE_PATH "$ENV{WEBKIT_LIBRARIES}" WEBKIT_LIBRARIES_DIR)
>     else ()
>-        set(WEBKIT_LIBRARIES_DIR "${CMAKE_SOURCE_DIR}/WebKitLibraries/win")
>+        file(TO_CMAKE_PATH "${CMAKE_SOURCE_DIR}/WebKitLibraries/win" WEBKIT_LIBRARIES_DIR)
>     endif ()
> endif ()
> 
>diff --git a/Source/cmake/WebKitCommon.cmake b/Source/cmake/WebKitCommon.cmake
>index 3843374a87a..d659577b591 100644
>--- a/Source/cmake/WebKitCommon.cmake
>+++ b/Source/cmake/WebKitCommon.cmake
>@@ -75,7 +75,6 @@ if (NOT HAS_RUN_WEBKIT_COMMON)
>     # -----------------------------------------------------------------------------
> 
>     if (ENABLE_WEBCORE)
>-        file(MAKE_DIRECTORY ${DERIVED_SOURCES_PAL_DIR})
>         file(MAKE_DIRECTORY ${DERIVED_SOURCES_WEBCORE_DIR})
>     endif ()
> 
>diff --git a/Source/cmake/WebKitFeatures.cmake b/Source/cmake/WebKitFeatures.cmake
>index b70b6166ad6..116e0d96974 100644
>--- a/Source/cmake/WebKitFeatures.cmake
>+++ b/Source/cmake/WebKitFeatures.cmake
>@@ -366,12 +366,17 @@ macro(WEBKIT_CHECK_HAVE_FUNCTION _variable _function)
> endmacro()
> 
> macro(WEBKIT_CHECK_HAVE_SYMBOL _variable _symbol _header)
>-    check_symbol_exists(${_symbol} ${_header} ${_variable}_value)
>+    check_symbol_exists(${_symbol} "${_header}" ${_variable}_value)
>     SET_AND_EXPOSE_TO_BUILD(${_variable} ${${_variable}_value})
> endmacro()
> 
> macro(WEBKIT_CHECK_HAVE_STRUCT _variable _struct _member _header)
>-    check_struct_has_member(${_struct} ${_member} ${_header} ${_variable}_value)
>+    check_struct_has_member(${_struct} ${_member} "${_header}" ${_variable}_value)
>+    SET_AND_EXPOSE_TO_BUILD(${_variable} ${${_variable}_value})
>+endmacro()
>+
>+macro(WEBKIT_CHECK_SOURCE_COMPILES _variable _source)
>+    check_cxx_source_compiles("${_source}" ${_variable}_value)
>     SET_AND_EXPOSE_TO_BUILD(${_variable} ${${_variable}_value})
> endmacro()
>

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