我在安装caffe时遇到错误，错误显示在makefile的第625行。显示错误之后，大约完成了92％。
CXX tools/caffe.cpp
CXX/LD -o .build_release/tools/caffe.bin
.build_release/lib/libcaffe.so: undefined reference to `leveldb::Status::ToString[abi:cxx11]() const'
.build_release/lib/libcaffe.so: undefined reference to `leveldb::DB::Open(leveldb::Options const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, leveldb::DB**)'
collect2: error: ld returned 1 exit status
Makefile:625: recipe for target '.build_release/tools/caffe.bin' failed
make: *** [.build_release/tools/caffe.bin] Error 1