OpenCV 2.4.5 can't find OpenNI and PrimeSensor Module [closed]

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I have OpenCV 2.4.5 and I just got a kinect and I installed OpenNI and PrimeSensor Module on my Ubuntu 12.04 64 bit machine. I tried the given example in OpenNI and it was working. I could see the depth image and RGB image.

I tried rebuilding OpenCV with OpenNI support by using WITH_OPENNI=ON flag but it still shows

--     OpenNI:                      NO
--     OpenNI PrimeSensor Modules:  NO

I checked /usr/lib, /usr/include/ni, and /usr/bin and found all the files there (I guess).

I found following relevant files in /usr/lib

libOpenNI.jni.so
libOpenNI.so
libXnCore.so
libXnDDK.so
libXnDeviceFile.so
libXnDeviceSensorV2KM.so
libXnFormats.so
libXRes.so.1
libXRes.so.1.0.0
libXvMC.so.1
libXvMC.so.1.0.0
libXvMCW.so.1
libXvMCW.so.1.0.0
libXxf86dga.so.1
libXxf86dga.so.1.0.0

and following files in /usr/include/ni

IXnNodeAllocator.h
Linux-Arm
Linux-x86
MacOSX
XnAlgorithms.h
XnArray.h
XnBaseNode.h
XnBitSet.h
XnCallback.h
XnCodecIDs.h
XnContext.h
XnCppWrapper.h
XnCyclicQueueT.h
XnCyclicStackT.h
XnDataTypes.h
XnDerivedCast.h
XnDump.h
XnDumpWriters.h
XnEnumerationErrors.h
XnEvent.h
XnEventT.h
XnFPSCalculator.h
XnGeneralBuffer.h
XnHash.h
XnHashT.h
XnInternalDefs.h
XnLicensing.h
XnList.h
XnListT.h
XnLog.h
XnLogTypes.h
XnLogWriterBase.h
XnMacros.h
XnModuleCFunctions.h
XnModuleCppInterface.h
XnModuleCppRegistratration.h
XnModuleInterface.h
XnNodeAllocator.h
XnNode.h
XnOpenNI.h
XnOSCpp.h
XnOS.h
XnOSMemory.h
XnOSStrings.h
XnPlatform.h
XnPrdNode.h
XnPrdNodeInfo.h
XnPrdNodeInfoList.h
XnProfiling.h
XnPropNames.h
XnQueries.h
XnQueue.h
XnQueueT.h
XnScheduler.h
XnStack.h
XnStackT.h
XnStatusCodes.h
XnStatus.h
XnStatusRegister.h
XnStringsHash.h
XnStringsHashT.h
XnThreadSafeQueue.h
XnTypes.h
XnUSBDevice.h
XnUSB.h
XnUtils.h
XnVersion.h

I couldn't find any such relevant files in /usr/bin. What files should be there?

Is there any solution to this problem?