[webkit-help] errors of building webkit-r59711

[wenmhappy]

hi,
       I got errors when building webkit-r59711 with vs2008:
e:\webkit-r59711\webcore\platform\graphics\win\WKCACFLayer.h(144) : error C3861: 'CACFLayerSetClearsContext': identifier not found
e:\webkit-r59711\webcore\platform\graphics\win\WKCACFLayer.h(145) : error C3861: 'CACFLayerGetClearsContext': identifier not found
e:\webkit-r59711\webcore\platform\graphics\win\WKCACFLayer.h(162) : error C3861: 'CACFLayerSetFilters': identifier not found
e:\webkit-r59711\webcore\platform\graphics\win\WKCACFLayer.h(163) : error C3861: 'CACFLayerGetFilters': identifier not found
e:\webkit-r59711\webcore\platform\graphics\win\WKCACFLayer.h(208) : error C3861: 'CACFLayerSetSortsSublayers': identifier not found
e:\webkit-r59711\webcore\platform\graphics\win\WKCACFLayer.h(209) : error C3861: 'CACFLayerGetSortsSublayers': identifier not found
these functions are not declared in E:\WebKit-r59711\WebKitLibraries\win\include\QuartzCore\CACFLayer.h, but could be found in E:\WebKit-r59711\WebKitLibraries\win\lib\QuartzCore.lib.
 
..\platform\graphics\win\WKCACFLayerRenderer.cpp(420) : error C2065: 'm_renderer' : undeclared identifier
the class WKCACFLayerRenderer has no  m_renderer at all ,  why  people who write the code makes the problem?
 
I don`t understand why is there strange things like this.
who could help me?
I have done update-webkit.
Thanks
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