undefined reference

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when compiling make , I got the error below.. looking for a reply...

make: *** [.build_release/tools/upgrade_net_proto_binary.bin] Error 1 .build_release/lib/libcaffe.so: undefined reference to caffe::CPMDataTransformer<double>::CPMDataTransformer(caffe::CPMTransformationParameter const&, caffe::Phase)' .build_release/lib/libcaffe.so: undefined reference to caffe::CPMDataTransformer::Transform_nv(caffe::Datum const&, caffe::Blob, caffe::Blob, int)' .build_release/lib/libcaffe.so: undefined reference to caffe::CPMDataTransformer<float>::CPMDataTransformer(caffe::CPMTransformationParameter const&, caffe::Phase)' .build_release/lib/libcaffe.so: undefined reference to caffe::CPMDataTransformer::Transform_nv(caffe::Datum const&, caffe::Blob, caffe::Blob, int)' .build_release/lib/libcaffe.so: undefined reference to caffe::CPMDataTransformer<double>::InitRand()' .build_release/lib/libcaffe.so: undefined reference to caffe::CPMDataTransformer::InitRand()' .build_release/lib/libcaffe.so: undefined reference to caffe::CPMDataTransformer<double>::Transform(cv::Mat const&, caffe::Blob<double>*)' .build_release/lib/libcaffe.so: undefined reference to caffe::CPMDataTransformer::Transform(cv::Mat const&, caffe::Blob*)' collect2: error: ld returned 1 exit status