error while make all -16

[jwnirvana]

CXX/LD -o .build_release/tools/caffe.bin CXX/LD -o .build_release/tools/compute_image_mean.bin CXX/LD -o .build_release/tools/convert_imageset.bin CXX/LD -o .build_release/tools/device_query.bin CXX/LD -o .build_release/tools/extract_features.bin CXX/LD -o .build_release/tools/finetune_net.bin CXX/LD -o .build_release/tools/net_speed_benchmark.bin CXX/LD -o .build_release/tools/test_net.bin CXX/LD -o .build_release/tools/train_net.bin CXX/LD -o .build_release/tools/upgrade_net_proto_text.bin CXX/LD -o .build_release/tools/upgrade_solver_proto_text.bin CXX/LD -o .build_release/examples/cifar10/convert_cifar_data.bin CXX/LD -o .build_release/examples/cpp_classification/classification.bin CXX/LD -o .build_release/tools/upgrade_net_proto_binary.bin CXX/LD -o .build_release/examples/siamese/convert_mnist_siamese_data.bin CXX/LD -o .build_release/examples/mnist/convert_mnist_data.bin .build_release/lib/libcaffe.so: undefined reference to cv::imread(cv::String const&, int)' .build_release/lib/libcaffe.so: undefined reference to cv::imencode(cv::String const&, cv::_InputArray const&, std::vector<unsigned char, std::allocator >&, std::vector<int, std::allocator > const&)' .build_release/lib/libcaffe.so: undefined reference to cv::imdecode(cv::_InputArray const&, int)' collect2: error: ld returned 1 exit status Makefile:607: recipe for target '.build_release/tools/upgrade_net_proto_binary.bin' failed make: *** [.build_release/tools/upgrade_net_proto_binary.bin] Error 1 make: *** Waiting for unfinished jobs.... .build_release/lib/libcaffe.so: undefined reference to cv::imread(cv::String const&, int)' .build_release/lib/libcaffe.so: undefined reference to cv::imencode(cv::String const&, cv::_InputArray const&, std::vector<unsigned char, std::allocator<unsigned char> >&, std::vector<int, std::allocator<int> > const&)' .build_release/lib/libcaffe.so: undefined reference to cv::imdecode(cv::_InputArray const&, int)' collect2: error: ld returned 1 exit status Makefile:607: recipe for target '.build_release/tools/upgrade_net_proto_text.bin' failed make: *** [.build_release/tools/upgrade_net_proto_text.bin] Error 1 .build_release/lib/libcaffe.so: undefined reference to cv::imread(cv::String const&, int)' .build_release/lib/libcaffe.so: undefined reference to cv::imencode(cv::String const&, cv::_InputArray const&, std::vector<.unsigned char, build_release/lib/libcaffe.so: undefined reference tostd :cv:::imreadallocator<(cv::String const&unsigned, int )' char.build_release>/ lib/libcaffe.so:> undefined&, reference to cv::imencode(cv::.build_release/libString/ libcaffe.soconst:& ,undefined cvreference: :to_InputArray constcv&:,: imreadstd(:cv::vector:<Stringunsigned constchar&,, stdint:):'allocator <.unsignedbuild_release /charlib>/ libcaffe.so>:& ,undefined stdreference: :tovector <intcv,: :stdimencode:(:cvallocator:<:intString> >const &const,& )cv': :._InputArraybuild_release /constlib&/,libcaffe.so :std :undefined: vectorreference< unsignedto char,cv :std::imdecode:(allocatorcv<:unsigned: _InputArraychar >const &>,& ,int )std': :vector<int, std::allocator<int> > const&)' .build_release/lib/libcaffe.so: undefined collect2: error: ld returned 1 exit status reference to cv::imdecode(cv::_InputArray const&, int)' std::vector<collect2: error: ld returned 1 exit status int, std::allocator > const&)' .build_release/lib/libcaffe.so: undefined reference to cv::imdecode(cv::_InputArray const&, int)' collect2: error: ld returned 1 exit status Makefile:607: recipe for target '.build_release/tools/upgrade_solver_proto_text.bin' failed make: *** [.build_release/tools/upgrade_solver_proto_text.bin] Error 1 Makefile:607: recipe for target '.build_release/tools/compute_image_mean.bin' failed make: *** [.build_release/tools/compute_image_mean.bin] Error 1 Makefile:612: recipe for target '.build_release/examples/siamese/convert_mnist_siamese_data.bin' failed make: *** [.build_release/examples/siamese/convert_mnist_siamese_data.bin] Error 1 .build_release/lib/libcaffe.so: undefined reference to cv::imread(cv::String const&, int)' .build_release/lib/libcaffe.so: undefined reference to cv::imencode(cv::String const&, cv::_InputArray const&, std::vector<unsigned char, std::allocator<unsigned char> >&, std::vector<int, std::allocator<int> > const&)' .build_release/lib/libcaffe.so: undefined reference to cv::imdecode(cv::_InputArray const&, int)' collect2: error: ld returned 1 exit status .build_release/lib/libcaffe.so: undefined reference to cv::imread(cv::String const&, int)' .build_release/lib/libcaffe.so: undefined reference to cv::imencode(cv::String const&, cv::_InputArray const&, std::vector<Makefile:612: recipe for target '.build_release/examples/mnist/convert_mnist_data.bin' failed unsigned make: *** [.build_release/examples/mnist/convert_mnist_data.bin] Error 1 char, std::allocator >&, std::vector<int, std::allocator > const&)' .build_release/lib/libcaffe.so: undefined reference to cv::imdecode(cv::_InputArray const&, int)' collect2: error: ld returned 1 exit status Makefile:612: recipe for target '.build_release/examples/cifar10/convert_cifar_data.bin' failed make: *** [.build_release/examples/cifar10/convert_cifar_data.bin] Error 1 .build_release/lib/libcaffe.so: undefined reference to cv::imread(cv::String const&, int)' .build_release/lib/libcaffe.so: undefined reference to cv::imencode(cv::String const&, cv::_InputArray const&, std::vector<unsigned char, std::allocator<unsigned char> >&, std::vector<int, std::allocator<int> > const&)' .build_release/lib/libcaffe.so: undefined reference to cv::imdecode(cv::_InputArray const&, int)' collect2: error: ld returned 1 exit status Makefile:607: recipe for target '.build_release/tools/convert_imageset.bin' failed make: *** [.build_release/tools/convert_imageset.bin] Error 1 .build_release/examples/cpp_classification/classification.o: In function main': classification.cpp:(.text.startup+0x25f): undefined reference to cv::imread(cv::String const&, int)' .build_release/lib/libcaffe.so: undefined reference to cv::imencode(cv::String const&, cv::_InputArray const&, std::vector<unsigned char, std::allocator<unsigned char> >&, std::vector<int, std::allocator<int> > const&)' .build_release/lib/libcaffe.so: undefined reference to cv::imdecode(cv::_InputArray const&, int)' collect2: error: ld returned 1 exit status Makefile:612: recipe for target '.build_release/examples/cpp_classification/classification.bin' failed make: *** [.build_release/examples/cpp_classification/classification.bin] Error 1 .build_release/lib/libcaffe.so: undefined reference to cv::imread(cv::String const&, int)' .build_release/lib/libcaffe.so: undefined reference to cv::imencode(cv::String const&, cv::_InputArray const&, std::vector<unsigned char, std::allocator >&, std::vector<int, std::allocator > const&)' .build_release/lib/libcaffe.so: undefined reference to cv::imdecode(cv::_InputArray const&, int)' collect2: error: ld returned 1 exit status Makefile:607: recipe for target '.build_release/tools/extract_features.bin' failed make: *** [.build_release/tools/extract_features.bin] Error 1 .build_release/lib/libcaffe.so: undefined reference to cv::imread(cv::String const&, int)' .build_release/lib/libcaffe.so: undefined reference to cv::imencode(cv::String const&, cv::_InputArray const&, std::vector<unsigned char, std::allocator<unsigned char> >&, std::vector<int, std::allocator<int> > const&)' .build_release/lib/libcaffe.so: undefined reference to cv::imdecode(cv::_InputArray const&, int)' collect2: error: ld returned 1 exit status Makefile:607: recipe for target '.build_release/tools/caffe.bin' failed make: *** [.build_release/tools/caffe.bin] Error 1

could you please tell me how to solve the bug?