加了USB Remote NDIS Class Driver之后出现错误信息

加了USB Host Support中的USB Remote NDIS Class Driver之后sysgen出现错误信息：

usbclient.lib(usbclient.obj) : error LNK2005: _IssueBulkTransfer already defined in usbd.lib(USBD.dll)
usbclient.lib(usbclient.obj) : error LNK2005: _IssueInterruptTransfer already defined in usbd.lib(USBD.dll)
usbclient.lib(usbclient.obj) : error LNK2005: _IssueVendorTransfer already defined in usbd.lib(USBD.dll)
E:\WINCE500\PBWorkspaces\Intel\WINCE500\CEPC_x86\cesysgen\oak\target\x86\retail\usb8023.dll : fatal error LNK1169: one or more multiply defined symbols found
NMAKE : fatal error U1077: 'link' : return code '0x491'
Stop.
NMAKE : fatal error U1077: 'E:\WINCE500\sdk\bin\i386\nmake.exe' : return code '0x2'
Stop.

百思不得其解，为什么会出现这种错误呢？

很明显有重复定义的函数存在，链接器不知道该链接那个。