[.build_release/tools/convert_imageset.bin] Error 1

[SaintLogos1234]

When I compile caffe, I meet a problems:
CXX/LD -o .build_release/tools/convert_imageset.bin
/usr/bin/ld: warning: libopencv_core.so.3.4, needed by /usr/local/lib/libopencv_imgcodecs.so, may conflict with libopencv_core.so.2.4
.build_release/lib/libcaffe.so：对‘cv::imencode(std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&, cv::_InputArray const&, std::vector<unsigned char, std::allocator >&, std::vector<int, std::allocator > const&)’未定义的引用
.build_release/lib/libcaffe.so：对‘cv::imread(std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&, int)’未定义的引用
collect2: error: ld returned 1 exit status
Makefile:619: recipe for target '.build_release/tools/convert_imageset.bin' failed
make: *** [.build_release/tools/convert_imageset.bin] Error 1
what can I do?