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Can not build sample code on iPhone 5s

I tried to install sample code on iphone 5s, but got 35 error, something like this:

 "QCAR::init()", referenced from:      -[SampleApplicationSession initQCARInBackground] in SampleApplicationSession.o  "QCAR::Rectangle::getRightBottomX() const", referenced from:      -[VirtualButtonsEAGLView renderFrameQCAR] in VirtualButtonsEAGLView.o  "QCAR::onResume()", referenced from:      -[SampleApplicationSession resumeAR:] in SampleApplicationSession.o  "QCAR::Renderer::getInstance()", referenced from:      -[SampleApplicationSession configureVideoBackgroundWithViewWidth:andHeight:] in SampleApplicationSession.o      -[TextRecoEAGLView renderFrameQCAR] in TextRecoEAGLView.o      -[CloudRecoEAGLView renderFrameQCAR] in CloudRecoEAGLView.o      -[CylinderTargetsEAGLView renderFrameQCAR] in CylinderTargetsEAGLView.o      -[MultiTargetsEAGLView renderFrameQCAR] in MultiTargetsEAGLView.o      -[FrameMarkersEAGLView renderFrameQCAR] in FrameMarkersEAGLView.o      -[VirtualButtonsEAGLView renderFrameQCAR] in VirtualButtonsEAGLView.o      ...ld: symbol(s) not found for architecture arm64

How can I fix this problem?