make has some error

[714142828]

.build_release/lib/libcaffe.so: undefined reference to `caffe::AccuracyLayer::Forward_gpu(std::vector<caffe::Blob, std::allocator<caffe::Blob> > const&, std::vector<caffe::Blob, std::allocator<caffe::Blob> > const&)'

collect2: error: ld returned 1 exit status
caffe::Blob, std::allocator<caffe::Blob> > const&)'
collect2: error: ld returned 1 exit status
Makefile:647: recipe for target '.build_release/tools/create_label_map.bin' failed
make: *** [.build_release/tools/create_label_map.bin] Error 1
make: *** Waiting for unfinished jobs....