[webkit-help] can't Build WebKit successfully +WebKitLibraries error C2061 +please help me !

[小溪]

Hi!
     I have prepared for build webkit for one weeks ,but it is still failed.
 NOw The six projects was builded successfully, including WTFGenerated\WTF\      JavaScriptCoreGenerated \ JavaScriptCore  \ WebCoreGenerated \ QTMovieWin
  
 but the 7th project  WebCore has on one kind of problems which is that "E:\cygwin\home\kelly\WebKit-r114855\WebKit-r114855\WebKitLibraries\win\include\CFNetwork/CFURLConnection.h(336) : error C2061: 语法错误 : 标识符“dispatch_queue_t"
 I don't known why.And I took the steps in the web, I'm sure I get the file of WebKitSupportLibrary.zip and run the common "update-webkit" \"update-webkit --wincaro" and "build-webkit".
  
 PS：The project of WebKit also had this problem.
 And the other errors for other projects is  error PRJ0002 : 错误的结果 1 (从“E:\WINDOWS\system32\cmd.exe”返回)。
  
 I'm very very looking forward to some kind people. please help me ! 
  
 The details is follows.
 ResourceHandleCFNet.cpp
E:\cygwin\home\kelly\WebKit-r114855\WebKit-r114855\WebKitLibraries\win\include\unicode/urename.h(26) 
 : warning C4005: “U_DISABLE_RENAMING”: 宏重定义
        E:\cygwin\home\kelly\WebKit-r114855\WebKit-r114855
 \WebKitBuild\Release\include\private\ICUVersion.h(1) : 参见“U_DISABLE_RENAMING”的前一个定义
E:\cygwin\home\kelly\WebKit-r114855\WebKit-r114855
 \WebKitLibraries\win\include\CFNetwork/CFURLConnection.h(336) : error C2061: 语法错误 : 标识符
 “dispatch_queue_t”
ResourceErrorCF.cpp
    E:\cygwin\home\kelly\WebKit-r114855\WebKit-r114855
 \WebKitBuild\Release\include\private\ICUVersion.h(1) : 参见“U_DISABLE_RENAMING”的前一个定义
E:\cygwin\home\kelly\WebKit-r114855\WebKit-r114855
 \WebKitLibraries\win\include\CFNetwork/CFURLConnection.h(336) : error C2061: 语法错误 : 标识符
 “dispatch_queue_t”
SocketStreamHandleBase.cpp
 E:\cygwin\home\kelly\WebKit-r114855\WebKit-r114855\WebKitBuild\Release\include\private\ICUVersion.h
 (1) : 参见“U_DISABLE_RENAMING”的前一个定义
E:\cygwin\home\kelly\WebKit-r114855\WebKit-r114855
 \WebKitLibraries\win\include\CFNetwork/CFURLConnection.h(336) : error C2061: 语法错误 : 标识符
 “dispatch_queue_t”
ResourceErrorBase.cpp
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