哦,天哪,我忘了把Caffe联系起来......那问题就解决了。
编辑:这是我用过的命令,以防任何人需要它
g++ -ggdb `pkg-config --cflags --libs opencv` -I /Users/SullyChen/caffe/include -I /usr/local/cuda/include -I /usr/local/Cellar/openblas/0.2.15/include -lboost_system -lglog -lprotobuf -L /Users/SullyChen/caffe/.build_release/lib -lcaffe classification.cpp -o classification