phantoms-qt-qtwebkit @5.5.1_2: error: typedef redefinition with different types

[chrstphrchvz (Christopher Chavez)]

TODO: check if other qtwebkit ports are affected by this issue.

​Build fails on macOS 10.7:

/opt/local/bin/clang++-mp-9.0 -c -pipe -arch x86_64 -stdlib=libc++ -isystem/opt/local/include/LegacySupport -I/opt/local/include -iwithsysroot /usr/include/libxslt -iwithsysroot /usr/include/libxml2 -fno-strict-aliasing -Os -fPIC -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk -std=c++11 -stdlib=libc++ -mmacosx-version-min=10.7 -fvisibility=hidden -fvisibility-inlines-hidden -fno-exceptions -MMD -DQT_NO_MTDEV -DQT_NO_LIBUDEV -DQT_NO_EVDEV -DQT_NO_TSLIB -DQT_NO_LIBINPUT -DQT_NO_GRAPHICSVIEW -DQT_NO_GRAPHICSEFFECT -DQT_NO_STYLESHEET -DQT_NO_STYLE_CDE -DQT_NO_STYLE_CLEANLOOKS -DQT_NO_STYLE_MOTIF -DQT_NO_STYLE_PLASTIQUE -DQT_NO_PRINTPREVIEWDIALOG -D__ASSERT_MACROS_DEFINE_VERSIONS_WITHOUT_UNDERSCORES=0 -DBUILDING_QT__=1 -DNDEBUG -DENABLE_3D_RENDERING=1 -DENABLE_BLOB=1 -DENABLE_CANVAS_PATH=1 -DENABLE_CHANNEL_MESSAGING=1 -DENABLE_CSS_BOX_DECORATION_BREAK=1 -DENABLE_CSS_COMPOSITING=1 -DENABLE_CSS_EXCLUSIONS=1 -DENABLE_CSS_FILTERS=1 -DENABLE_CSS_IMAGE_SET=1 -DENABLE_CSS_REGIONS=1 -DENABLE_CSS_SHAPES=1 -DENABLE_CSS_STICKY_POSITION=1 -DENABLE_CSS_TRANSFORMS_ANIMATIONS_UNPREFIXED=1 -DENABLE_DATALIST_ELEMENT=1 -DENABLE_DETAILS_ELEMENT=1 -DENABLE_DOWNLOAD_ATTRIBUTE=1 -DENABLE_FAST_MOBILE_SCROLLING=1 -DENABLE_FILTERS=1 -DENABLE_FTPDIR=1 -DENABLE_FULLSCREEN_API=1 -DENABLE_ICONDATABASE=1 -DENABLE_IFRAME_SEAMLESS=1 -DENABLE_INDEXED_DATABASE=1 -DENABLE_INPUT_TYPE_COLOR=1 -DENABLE_INSPECTOR=1 -DENABLE_INSPECTOR_SERVER=1 -DENABLE_JAVASCRIPT_DEBUGGER=1 -DENABLE_LEGACY_NOTIFICATIONS=1 -DENABLE_LEGACY_VIEWPORT_ADAPTION=1 -DENABLE_LEGACY_VENDOR_PREFIXES=1 -DENABLE_LEGACY_WEB_AUDIO=1 -DENABLE_LINK_PREFETCH=1 -DENABLE_METER_ELEMENT=1 -DENABLE_MHTML=1 -DENABLE_NOTIFICATIONS=1 -DENABLE_PAGE_VISIBILITY_API=1 -DENABLE_PROGRESS_ELEMENT=1 -DENABLE_RESOLUTION_MEDIA_QUERY=1 -DENABLE_REQUEST_ANIMATION_FRAME=1 -DENABLE_SHARED_WORKERS=1 -DENABLE_SMOOTH_SCROLLING=1 -DENABLE_SQL_DATABASE=1 -DENABLE_SUBPIXEL_LAYOUT=1 -DENABLE_SVG=1 -DENABLE_SVG_FONTS=1 -DENABLE_TOUCH_ADJUSTMENT=1 -DENABLE_TOUCH_EVENTS=1 -DENABLE_VIEW_MODE_CSS_MEDIA=1 -DENABLE_WEB_SOCKETS=1 -DENABLE_WEB_TIMING=1 -DENABLE_WORKERS=1 -DENABLE_XHR_TIMEOUT=1 -DWTF_USE_TILED_BACKING_STORE=1 -DWTF_USE_CROSS_PLATFORM_CONTEXT_MENUS=1 -DHAVE_QTPRINTSUPPORT=1 -DHAVE_QSTYLE=1 -DHAVE_QTTESTLIB=1 -DWTF_USE_LIBXML2=1 -DENABLE_XSLT=1 -DWTF_USE_ZLIB=1 -DWTF_USE_WEBP=1 -DWTF_USE_SYSTEM_LEVELDB=1 -DWTF_USE_LIBJPEG=1 -DWTF_USE_LIBPNG=1 -DPLUGIN_ARCHITECTURE_UNSUPPORTED=1 -DHAVE_SQLITE3=1 -DENABLE_TOUCH_SLIDER=1 -DWTF_USE_LEVELDB=1 -DENABLE_ACCELERATED_2D_CANVAS=0 -DENABLE_BATTERY_STATUS=0 -DENABLE_CANVAS_PROXY=0 -DENABLE_CSP_NEXT=0 -DENABLE_CSS_GRID_LAYOUT=0 -DENABLE_CSS_HIERARCHIES=0 -DENABLE_CSS_IMAGE_ORIENTATION=0 -DENABLE_CSS_IMAGE_RESOLUTION=0 -DENABLE_CSS_SHADERS=0 -DENABLE_CSS_VARIABLES=0 -DENABLE_CSS3_CONDITIONAL_RULES=0 -DENABLE_CSS3_TEXT=0 -DENABLE_CSS3_TEXT_LINE_BREAK=0 -DENABLE_DASHBOARD_SUPPORT=0 -DENABLE_DATAGRID=0 -DENABLE_DATA_TRANSFER_ITEMS=0 -DENABLE_DEVICE_ORIENTATION=0 -DENABLE_DIRECTORY_UPLOAD=0 -DENABLE_FILE_SYSTEM=0 -DENABLE_FONT_LOAD_EVENTS=0 -DENABLE_GAMEPAD=0 -DENABLE_GEOLOCATION=0 -DENABLE_GESTURE_EVENTS=0 -DENABLE_HIGH_DPI_CANVAS=0 -DENABLE_INPUT_SPEECH=0 -DENABLE_INPUT_TYPE_DATE=0 -DENABLE_INPUT_TYPE_DATETIME_INCOMPLETE=0 -DENABLE_INPUT_TYPE_DATETIMELOCAL=0 -DENABLE_INPUT_TYPE_MONTH=0 -DENABLE_INPUT_TYPE_TIME=0 -DENABLE_INPUT_TYPE_WEEK=0 -DENABLE_LEGACY_CSS_VENDOR_PREFIXES=0 -DENABLE_MATHML=0 -DENABLE_MEDIA_SOURCE=0 -DENABLE_MEDIA_STATISTICS=0 -DENABLE_MEDIA_STREAM=0 -DENABLE_MICRODATA=0 -DENABLE_MOUSE_CURSOR_SCALE=0 -DENABLE_NAVIGATOR_CONTENT_UTILS=0 -DENABLE_NETSCAPE_PLUGIN_API=0 -DENABLE_NETWORK_INFO=0 -DENABLE_NOSNIFF=0 -DENABLE_ORIENTATION_EVENTS=0 -DENABLE_PROXIMITY_EVENTS=0 -DENABLE_QUOTA=0 -DENABLE_RESOURCE_TIMING=0 -DENABLE_SCRIPTED_SPEECH=0 -DENABLE_SECCOMP_FILTERS=0 -DENABLE_SHADOW_DOM=0 -DENABLE_STYLE_SCOPED=0 -DENABLE_TEMPLATE_ELEMENT=0 -DENABLE_TEXT_AUTOSIZING=0 -DENABLE_THREADED_HTML_PARSER=0 -DENABLE_TOUCH_ICON_LOADING=0 -DENABLE_USER_TIMING=0 -DENABLE_VIBRATION=0 -DENABLE_VIDEO=0 -DENABLE_VIDEO_TRACK=0 -DENABLE_WEBGL=0 -DENABLE_WEB_AUDIO=0 -DSTATICALLY_LINKED_WITH_JavaScriptCore -DSTATICALLY_LINKED_WITH_WTF -DBUILDING_WebCore -DBUILDING_WEBKIT -DQT_ASCII_CAST_WARNINGS -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_SQL_LIB -DQT_CORE_LIB -I. -I. -IModules/filesystem -IModules/geolocation -IModules/indexeddb -IModules/navigatorcontentutils -IModules/notifications -IModules/proximity -IModules/quota -IModules/webaudio -IModules/webdatabase -IModules/websockets -Iaccessibility -Ibindings -Ibindings/generic -Ibridge -Ibridge/qt -Icss -Idom -Idom/default -Iediting -Ifileapi -Ihistory -Ihtml -Ihtml/canvas -Ihtml/forms -Ihtml/parser -Ihtml/shadow -Ihtml/track -Iinspector -Iloader -Iloader/appcache -Iloader/archive -Iloader/cache -Iloader/icon -Imathml -Ipage -Ipage/animation -Ipage/qt -Ipage/scrolling -Ipage/scrolling/coordinatedgraphics -Iplatform -Iplatform/animation -Iplatform/audio -Iplatform/graphics -Iplatform/graphics/cpu/arm -Iplatform/graphics/cpu/arm/filters -Iplatform/graphics/filters -Iplatform/graphics/filters/texmap -Iplatform/graphics/opengl -Iplatform/graphics/opentype -Iplatform/graphics/qt -Iplatform/graphics/surfaces -Iplatform/graphics/texmap -Iplatform/graphics/texmap/coordinated -Iplatform/graphics/transforms -Iplatform/image-decoders -Iplatform/image-decoders/bmp -Iplatform/image-decoders/ico -Iplatform/image-decoders/gif -Iplatform/image-decoders/jpeg -Iplatform/image-decoders/png -Iplatform/image-decoders/webp -Iplatform/leveldb -Iplatform/mock -Iplatform/network -Iplatform/network/qt -Iplatform/qt -Iplatform/sql -Iplatform/text -Iplatform/text/transcoder -Iplugins -Irendering -Irendering/mathml -Irendering/shapes -Irendering/style -Irendering/svg -Istorage -Isvg -Isvg/animation -Isvg/graphics -Isvg/graphics/filters -Isvg/properties -Itesting -I/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_aqua_phantomjs-qt/phantomjs-qt-qtwebkit/work/qtwebkit-opensource-src-5.5.1/Source/WebCore/websockets -Iworkers -Ixml -Ixml/parser -I../ThirdParty -Ibridge/jsc -Ibindings/js -Ibridge/c -Itesting/js -Igenerated -Iloader/archive/mhtml -I../../Source -I../include -I../JavaScriptCore -I../../Source -I../WTF -I../JavaScriptCore/assembler -I../JavaScriptCore/bytecode -I../JavaScriptCore/bytecompiler -I../JavaScriptCore/heap -I../JavaScriptCore/dfg -I../JavaScriptCore/debugger -I../JavaScriptCore/disassembler -I../JavaScriptCore/interpreter -I../JavaScriptCore/jit -I../JavaScriptCore/llint -I../JavaScriptCore/parser -I../JavaScriptCore/profiler -I../JavaScriptCore/runtime -I../JavaScriptCore/tools -I../JavaScriptCore/yarr -I../JavaScriptCore/API -I../JavaScriptCore/ForwardingHeaders -I../JavaScriptCore/generated -I/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_aqua_phantomjs-qt/phantomjs-qt-qtwebkit/work/qtwebkit-opensource-src-5.5.1/Source/JavaScriptCore/generated/LLIntOffsetsExtractor -I../JavaScriptCore/generated/release -I../WTF -isystem /opt/local/include -I/opt/local/libexec/phantomjs-qt/lib/QtGui.framework/Headers -I/opt/local/libexec/phantomjs-qt/lib/QtGui.framework/Headers/5.5.1 -I/opt/local/libexec/phantomjs-qt/lib/QtGui.framework/Headers/5.5.1/QtGui -I/opt/local/libexec/phantomjs-qt/lib/QtNetwork.framework/Headers -I/opt/local/libexec/phantomjs-qt/lib/QtSql.framework/Headers -I/opt/local/libexec/phantomjs-qt/lib/QtCore.framework/Headers -I/opt/local/libexec/phantomjs-qt/lib/QtCore.framework/Headers/5.5.1 -I/opt/local/libexec/phantomjs-qt/lib/QtCore.framework/Headers/5.5.1/QtCore -I.moc -I/opt/local/libexec/phantomjs-qt/mkspecs/macx-clang -F/opt/local/libexec/phantomjs-qt/lib -o .obj/loader/FrameLoader.o loader/FrameLoader.cpp
…
In file included from loader/FrameLoader.cpp:109:
In file included from xml/parser/XMLDocumentParser.h:33:
In file included from xml/XMLErrors.h:36:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk/usr/include/libxml2/libxml/parser.h:798:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk/usr/include/libxml2/libxml/encoding.h:41:18: error: typedef redefinition with different types ('uint16_t' (aka 'unsigned short') vs 'char16_t')
typedef uint16_t UChar;
                 ^
/opt/local/include/unicode/umachine.h:376:22: note: previous definition is here
    typedef char16_t UChar;
                     ^

phantomjs-qt-qtwebkit depends on libxml2 from MacPorts, but in this error the system libxml2 include headers are being used instead.