I am attempting to build the GPL version of the QT SDK from sources on a Windows 7 64-bit machine but have hit a roadblock.

Qt Code:
  1. In file included from access\qnetworkaccesshttpbackend.cpp:56:0:
  2. access\qhttpthreaddelegate_p.h:60:29: fatal error: QSslConfiguration: No such file or directory
  3. compilation terminated.
  4. make[2]: *** [tmp/obj/debug_shared/qnetworkaccesshttpbackend.o] Error 1
  5. make[2]: Leaving directory `C:/MinGW/qt/src/network'
  6. make[1]: *** [debug-all] Error 2
  7. make[1]: Leaving directory `C:/MinGW/qt/src/network'
  8. make: *** [sub-network-make_default-ordered] Error 2
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qhttpthraddelegate_p.h has a stanza on line 60 #include <QSslConfiguration> I take the error to literally mean it is not being made/included.

I am not a super-literate programmer, much less a c++ person. How do I get this object(?) made to complete the build?