undefined reference to `google::protobuf::Message::InitializationErrorString() const'

/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::DebugString() const'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteBytesMaybeAliased(int, std::string const&, google::protobuf::io::CodedOutputStream*)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `cv::imdecode(cv::_InputArray const&, int)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::empty_string_'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::NameOfEnum(google::protobuf::EnumDescriptor const*, int)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteString(int, std::string const&, google::protobuf::io::CodedOutputStream*)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `leveldb::Status::ToString() const'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::DescriptorPool::FindFileByName(std::string const&) const'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::ArenaStringPtr::AssignWithDefault(std::string const*, google::protobuf::internal::ArenaStringPtr)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::ReadBytes(google::protobuf::io::CodedInputStream*, std::string*)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::InitializationErrorString() const'
/usr/bin/ld: .build_release/tools/caffe.o: in function `std::string* google::MakeCheckOpString(unsigned long const&, int const&, char const*)':
caffe.cpp:(.text._ZN6google17MakeCheckOpStringImiEEPSsRKT_RKT0_PKc[_ZN6google17MakeCheckOpStringImiEEPSsRKT_RKT0_PKc]+0x43): undefined reference to `google::base::CheckOpMessageBuilder::NewString()'
/usr/bin/ld: .build_release/tools/caffe.o: in function `main':
caffe.cpp:(.text.startup+0x3e): undefined reference to `google::SetVersionString(std::string const&)'
/usr/bin/ld: caffe.cpp:(.text.startup+0x6e): undefined reference to `google::SetUsageMessage(std::string const&)'
/usr/bin/ld: .build_release/tools/caffe.o: in function `_GLOBAL__sub_I_caffe.cpp':
caffe.cpp:(.text.startup+0x328): undefined reference to `google::FlagRegisterer::FlagRegisterer(char const*, char const*, char const*, std::string*, std::string*)'
/usr/bin/ld: caffe.cpp:(.text.startup+0x3d4): undefined reference to `google::FlagRegisterer::FlagRegisterer(char const*, char const*, char const*, std::string*, std::string*)'
/usr/bin/ld: caffe.cpp:(.text.startup+0x479): undefined reference to `google::FlagRegisterer::FlagRegisterer(char const*, char const*, char const*, std::string*, std::string*)'
/usr/bin/ld: caffe.cpp:(.text.startup+0x51e): undefined reference to `google::FlagRegisterer::FlagRegisterer(char const*, char const*, char const*, std::string*, std::string*)'
/usr/bin/ld: caffe.cpp:(.text.startup+0x5f2): undefined reference to `google::FlagRegisterer::FlagRegisterer(char const*, char const*, char const*, std::string*, std::string*)'
/usr/bin/ld: .build_release/tools/caffe.o:caffe.cpp:(.text.startup+0x697): more undefined references to `google::FlagRegisterer::FlagRegisterer(char const*, char const*, char const*, std::string*, std::string*)' follow
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteStringMaybeAliased(int, std::string const&, google::protobuf::io::CodedOutputStream*)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedOutputStream::WriteStringWithSizeToArray(std::string const&, unsigned char*)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `cv::imread(cv::String const&, int)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::GetTypeName() const'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::MessageFactory::InternalRegisterGeneratedFile(char const*, void (*)(std::string const&))'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `cv::imencode(cv::String const&, cv::_InputArray const&, std::vector >&, std::vector > const&)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `leveldb::DB::Open(leveldb::Options const&, std::string const&, leveldb::DB**)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::DebugString() const'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteBytesMaybeAliased(int, std::string const&, google::protobuf::io::CodedOutputStream*)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `cv::imdecode(cv::_InputArray const&, int)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::MessageLite::ParseFromString(std::string const&)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::empty_string_'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::NameOfEnum(google::protobuf::EnumDescriptor const*, int)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteString(int, std::string const&, google::protobuf::io::CodedOutputStream*)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `leveldb::Status::ToString() const'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::DescriptorPool::FindFileByName(std::string const&) const'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::ArenaStringPtr::AssignWithDefault(std::string const*, google::protobuf::internal::ArenaStringPtr)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::ReadBytes(google::protobuf::io::CodedInputStream*, std::string*)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::InitializationErrorString() const'
collect2: error: ld returned 1 exit status
make: *** [Makefile:636: .build_release/tools/compute_image_mean.bin] Error 1
collect2: error: ld returned 1 exit status
make: *** [Makefile:636: .build_release/tools/convert_imageset.bin] Error 1
collect2: error: ld returned 1 exit status
make: *** [Makefile:636: .build_release/tools/caffe.bin] Error 1
/usr/bin/ld: .build_release/examples/mnist/convert_mnist_data.o: in function `convert_dataset(char const*, char const*, char const*, std::string const&)':
convert_mnist_data.cpp:(.text+0x71a): undefined reference to `google::protobuf::MessageLite::SerializeToString(std::string*) const'
/usr/bin/ld: convert_mnist_data.cpp:(.text+0x7e6): undefined reference to `google::protobuf::internal::empty_string_'
/usr/bin/ld: .build_release/examples/mnist/convert_mnist_data.o: in function `std::string* google::MakeCheckOpString(unsigned int const&, int const&, char const*)':
convert_mnist_data.cpp:(.text._ZN6google17MakeCheckOpStringIjiEEPSsRKT_RKT0_PKc[_ZN6google17MakeCheckOpStringIjiEEPSsRKT_RKT0_PKc]+0x43): undefined reference to `google::base::CheckOpMessageBuilder::NewString()'
/usr/bin/ld: .build_release/examples/mnist/convert_mnist_data.o: in function `std::string* google::MakeCheckOpString(unsigned int const&, unsigned int const&, char const*)':
convert_mnist_data.cpp:(.text._ZN6google17MakeCheckOpStringIjjEEPSsRKT_RKT0_PKc[_ZN6google17MakeCheckOpStringIjjEEPSsRKT_RKT0_PKc]+0x43): undefined reference to `google::base::CheckOpMessageBuilder::NewString()'
/usr/bin/ld: .build_release/examples/mnist/convert_mnist_data.o: in function `_GLOBAL__sub_I_convert_mnist_data.cpp':
convert_mnist_data.cpp:(.text.startup+0x8b): undefined reference to `google::FlagRegisterer::FlagRegisterer(char const*, char const*, char const*, std::string*, std::string*)'
/usr/bin/ld: .build_release/examples/mnist/convert_mnist_data.o: in function `main':
convert_mnist_data.cpp:(.text.startup+0x114): undefined reference to `google::SetUsageMessage(std::string const&)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteStringMaybeAliased(int, std::string const&, google::protobuf::io::CodedOutputStream*)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedOutputStream::WriteStringWithSizeToArray(std::string const&, unsigned char*)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `cv::imread(cv::String const&, int)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::GetTypeName() const'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::MessageFactory::InternalRegisterGeneratedFile(char const*, void (*)(std::string const&))'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `cv::imencode(cv::String const&, cv::_InputArray const&, std::vector >&, std::vector >&, std::vector > const&)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `leveldb::DB::Open(leveldb::Options const&, std::string const&, leveldb::DB**)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::DebugString() const'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::base::CheckOpMessageBuilder::NewString()'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteBytesMaybeAliased(int, std::string const&, google::protobuf::io::CodedOutputStream*)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `cv::imdecode(cv::_InputArray const&, int)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::MessageLite::ParseFromString(std::string const&)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::NameOfEnum(google::protobuf::EnumDescriptor const*, int)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteString(int, std::string const&, google::protobuf::io::CodedOutputStream*)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `leveldb::Status::ToString() const'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::DescriptorPool::FindFileByName(std ::stringstd :const&:)allocator 
 />usr /constbin&/)'ld
:/ usr./build_releasebin//libld/:libcaffe.so :. build_releaseundefined/ libreference/libcaffe.so :to undefined  reference` googleto: :`protobufleveldb::::internalDB::::ArenaStringPtrOpen:(:leveldbAssignWithDefault:(:stdOptions: :conststring& ,const std*:,: stringgoogle :const:&protobuf,: :leveldbinternal::::DBArenaStringPtr*)*')
'/
usr//usrbin/bin//ldld::  ..build_releasebuild_release//liblib//libcaffe.solibcaffe.so::  undefinedundefined  referencereference  toto  ``googlegoogle::::protobufprotobuf::::Messageinternal::::DebugStringWireFormatLite(:): ReadBytesconst('google
:/:usrprotobuf/:bin:/iold::: CodedInputStream.*build_release,/ libstd/libcaffe.so::: stringundefined* )reference' 
to/ usr`/googlebin::/protobufld::: internal.:build_release:/WireFormatLitelib:/:libcaffe.soWriteBytesMaybeAliased:( intundefined,  referencestd :to: string` googleconst:&,: protobufgoogle:::protobuf:Message:::InitializationErrorString() const'
:io::CodedOutputStream*)'
/usr/bin/ld:collect2: error: ld returned 1 exit status
 .build_release/lib/libcaffe.so: undefined reference to `cv::imdecode(cv::_InputArray const&, int)'
/usr/bin/ld:make: *** [Makefile:641: .build_release/examples/cifar10/convert_cifar_data.bin] Error 1
 .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::MessageLite::ParseFromString(std::string const&)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::NameOfEnum(google::protobuf::EnumDescriptor const*, int)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteString(int, std::string const&, google::protobuf::io::CodedOutputStream*)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `leveldb::Status::ToString() const'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::DescriptorPool::FindFileByName(std::string const&) const'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::ArenaStringPtr::AssignWithDefault(std::string const*, google::protobuf::internal::ArenaStringPtr)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::ReadBytes(google::protobuf::io::CodedInputStream*, std::string*)'
/usr/bin/ld: .build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::InitializationErrorString() const'
collect2: error: ld returned 1 exit status
make: *** [Makefile:641: .build_release/examples/mnist/convert_mnist_data.bin] Error 1

解决办法：
pip install protobuf
https://blog.csdn.net/mudooo/article/details/96983831
sudo gedit Makefile.config

cp Makefile.config.example Makefile.config
## Refer to http://caffe.berkeleyvision.org/installation.html
# Contributions simplifying and improving our build system are welcome!

# cuDNN acceleration switch (uncomment to build with cuDNN).
# USE_CUDNN := 1

# CPU-only switch (uncomment to build without GPU support).
CPU_ONLY := 1 ##关键１
# uncomment to disable IO dependencies and corresponding data layers
# USE_OPENCV := 0
# USE_LEVELDB := 0
# USE_LMDB := 0
# This code is taken from https://github.com/sh1r0/caffe-android-lib
# USE_HDF5 := 0

# uncomment to allow MDB_NOLOCK when reading LMDB files (only if necessary)
#   You should not set this flag if you will be reading LMDBs with any
#   possibility of simultaneous read and write
# ALLOW_LMDB_NOLOCK := 1

# Uncomment if you're using OpenCV 3
OPENCV_VERSION := 3　##关键２

# To customize your choice of compiler, uncomment and set the following.
# N.B. the default for Linux is g++ and the default for OSX is clang++
# CUSTOM_CXX := g++

# CUDA directory contains bin/ and lib/ directories that we need.
CUDA_DIR := /usr/local/cuda
# On Ubuntu 14.04, if cuda tools are installed via
# "sudo apt-get install nvidia-cuda-toolkit" then use this instead:
# CUDA_DIR := /usr

# CUDA architecture setting: going with all of them.
# For CUDA < 6.0, comment the *_50 through *_61 lines for compatibility.
# For CUDA < 8.0, comment the *_60 and *_61 lines for compatibility.
# For CUDA >= 9.0, comment the *_20 and *_21 lines for compatibility.
CUDA_ARCH := -gencode arch=compute_20,code=sm_20 \
        -gencode arch=compute_20,code=sm_21 \
        -gencode arch=compute_30,code=sm_30 \
        -gencode arch=compute_35,code=sm_35 \
        -gencode arch=compute_50,code=sm_50 \
        -gencode arch=compute_52,code=sm_52 \
        -gencode arch=compute_60,code=sm_60 \
        -gencode arch=compute_61,code=sm_61 \
        -gencode arch=compute_61,code=compute_61

# BLAS choice:
# atlas for ATLAS (default)
# mkl for MKL
# open for OpenBlas
BLAS := atlas
# Custom (MKL/ATLAS/OpenBLAS) include and lib directories.
# Leave commented to accept the defaults for your choice of BLAS
# (which should work)!
# BLAS_INCLUDE := /path/to/your/blas
# BLAS_LIB := /path/to/your/blas

# Homebrew puts openblas in a directory that is not on the standard search path
# BLAS_INCLUDE := $(shell brew --prefix openblas)/include
# BLAS_LIB := $(shell brew --prefix openblas)/lib

# This is required only if you will compile the matlab interface.
# MATLAB directory should contain the mex binary in /bin.
# MATLAB_DIR := /usr/local
# MATLAB_DIR := /Applications/MATLAB_R2012b.app

# NOTE: this is required only if you will compile the python interface.
# We need to be able to find Python.h and numpy/arrayobject.h.
#PYTHON_INCLUDE := /usr/include/python2.7 \
#       /usr/lib/python2.7/dist-packages/numpy/core/include
# Anaconda Python distribution is quite popular. Include path:
# Verify anaconda location, sometimes it's in root.
ANACONDA_HOME := $(HOME)/anaconda3　##关键3
PYTHON_INCLUDE := $(ANACONDA_HOME)/include \　##关键4
        $(ANACONDA_HOME)/include/python3.6m \
        $(ANACONDA_HOME)/lib/python3.6/site-packages/numpy/core/include

# Uncomment to use Python 3 (default is Python 2)
PYTHON_LIBRARIES := boost_python3 python3.6m ###关键5
# PYTHON_INCLUDE := /usr/include/python3.5m \
#                 /usr/lib/python3.5/dist-packages/numpy/core/include

# We need to be able to find libpythonX.X.so or .dylib.
#PYTHON_LIB := /usr/lib
PYTHON_LIB := $(ANACONDA_HOME)/lib

# Homebrew installs numpy in a non standard path (keg only)
# PYTHON_INCLUDE += $(dir $(shell python -c 'import numpy.core; print(numpy.core.__file__)'))/include
# PYTHON_LIB += $(shell brew --prefix numpy)/lib

# Uncomment to support layers written in Python (will link against Python libs)
# WITH_PYTHON_LAYER := 1

# Whatever else you find you need goes here.
INCLUDE_DIRS := $(PYTHON_INCLUDE) /usr/local/include
LIBRARY_DIRS := $(PYTHON_LIB) /usr/local/lib /usr/lib

# If Homebrew is installed at a non standard location (for example your home directory) and you use it for general dependencies
# INCLUDE_DIRS += $(shell brew --prefix)/include
# LIBRARY_DIRS += $(shell brew --prefix)/lib

# NCCL acceleration switch (uncomment to build with NCCL)
# https://github.com/NVIDIA/nccl (last tested version: v1.2.3-1+cuda8.0)
# USE_NCCL := 1

# Uncomment to use `pkg-config` to specify OpenCV library paths.
# (Usually not necessary -- OpenCV libraries are normally installed in one of the above $LIBRARY_DIRS.)
USE_PKG_CONFIG := 1 ##关键6

# N.B. both build and distribute dirs are cleared on `make clean`
BUILD_DIR := build
DISTRIBUTE_DIR := distribute

# Uncomment for debugging. Does not work on OSX due to https://github.com/BVLC/caffe/issues/171
# DEBUG := 1

# The ID of the GPU that 'make runtest' will use to run unit tests.
TEST_GPUID := 0

# enable pretty build (comment to see full commands)
Q ?= @

共需要修改6个地方，仅安装cpu,配置anaconda3的相关路径，使用opencv3，取消注释USE_PKG_CONFIG=1这一行.