Caffe-SegNet安装笔记（基于anaconda3），这样出现protobuf版本冲突，请看我的 Caffe-SegNet安装笔记（基于Python2.7）
首先安装caffe，安装过程请参考：
https://blog.csdn.net/zhuiqiuzhuoyue583/article/details/86757223
我已经安装anaconda3，cuda8.0，cudnn5.1，opencv3.3，caffe1.0.0
安装Caffe-SegNet：
SegNet官网：http://mi.eng.cam.ac.uk/projects/segnet/
1. 下载SegNet：
支持 cudnn v2 ：https://github.com/alexgkendall/caffe-segnet
支持 cudnn v5：https://github.com/TimoSaemann/caffe-segnet-cudnn5 （我用的cudnn5）
2. 解压
3. 因为它是给予caffe实现的，所以先编译过程和要求与caffe相同
编译
进入主目录
cp Makefile.config.example Makefile.config4.修改Makefile.config
a.使用 cudnn
USE_CUDNN := 1
b.使用的 opencv 版本是 3
OPENCV_VERSION := 3
c.使用 python 来编写
layer WITH_PYTHON_LAYER := 1
d.重要的一项 :
将# Whatever else you find you need goes here.下面的
INCLUDE_DIRS := $(PYTHON_INCLUDE) /usr/local/include LIBRARY_DIRS := $(PYTHON_LIB) /usr/local/lib /usr/lib
修改为： INCLUDE_DIRS := $(PYTHON_INCLUDE) /usr/local/include /usr/include/hdf5/serial/ LIBRARY_DIRS := $(PYTHON_LIB) /usr/local/lib /usr/lib /usr/lib/x86_64-linux-gnu /usr/lib/x86_64-linux-gnu/hdf5/serial
这是因为ubuntu16.04的文件包含位置发生了变化，尤其是需要用到的hdf5的位置，所以需要更改这一路径
e.删除 CUDA_ARCH := 的前两行,避免 CUDA 报错
f. 修改 PYTHON_INCLUDE 路径，将其注释即可
# 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
g. 修改 Anaconda 路径
# Verify anaconda location, sometimes it's in root.
ANACONDA_HOME := /home/zqzy/anaconda3 #改成自己anaconda的路径
#注意这里的 \，书写方式是“空一个 空格，然后回车，下一行使用Tab建进行空格”
PYTHON_INCLUDE := $(ANACONDA_HOME)/include \
$(ANACONDA_HOME)/include/python3.6m \
$(ANACONDA_HOME)/lib/python3.6/site-packages/numpy/core/include
# 注意这里的空格是使用“Tab”键来写的
h. 使用 Python3
# Uncomment to use Python 3 (default is Python 2)
PYTHON_LIBRARIES := boost_python3 python3.6m
#注意这里的 \，书写方式是“空一个 空格，然后回车，下一行使用Tab建进行空格”
PYTHON_INCLUDE := /usr/include/python3.6m \
/usr/lib/python3.6/dist-packages/numpy/core/include \
/home/zqzy/anaconda3/include/python3.6m
# 注意这里的空格是使用“Tab”键来写的
i. 修改 PYTHON_LIB 路径
# We need to be able to find libpythonX.X.so or .dylib.
#PYTHON_LIB := /usr/lib
#注意这里的 \，书写方式是“空一个 空格，然后回车，下一行使用Tab建进行空格”
PYTHON_LIB := $(ANACONDA_HOME)/lib \
$(ANACONDA_HOME)/pkgs/python-3.6.4-hc3d631a_1/lib
# 注意这里的空格是使用“Tab”键来写的
j. 紧接着上面这个PYTHON_LIB，在其下面添加
LINKFLAGS := -Wl,-rpath,/home/zqzy/anaconda3/lib #要添加这句话，否则报错
以上内容一定要仔细查看自己相应的目录一一对应，若没有相关目录一定是少安装了某些依赖，这一步配置好了后面就不会有什么错误以上内容一定要仔细查看自己相应的目录一一对应，有的可能不太一样，需要自己去相应的目录查看，若没有相关目录一定是少安装了某些依赖，这一步配置好了后面就不会有什么错误
这里附上我修改后的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
# uncomment to disable IO dependencies and corresponding data layers
# USE_OPENCV := 0
# USE_LEVELDB := 0
# USE_LMDB := 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
# 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 lines for compatibility.
CUDA_ARCH := -gencode arch=compute_30,code=sm_30 \
-gencode arch=compute_35,code=sm_35 \
-gencode arch=compute_50,code=sm_50 \
-gencode arch=compute_50,code=compute_50
# 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/zqzy/anaconda3
PYTHON_INCLUDE := $(ANACONDA_HOME)/include \
$(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
PYTHON_INCLUDE := /usr/include/python3.6m \
/usr/lib/python3.6/dist-packages/numpy/core/include \
/home/senius/anaconda3/include/python3.6m
# We need to be able to find libpythonX.X.so or .dylib.
# PYTHON_LIB := /usr/lib
PYTHON_LIB := $(ANACONDA_HOME)/lib \
$(ANACONDA_HOME)/pkgs/python-3.6.4-hc3d631a_1/lib
LINKFLAGS := -Wl,-rpath,/home/zqzy/anaconda3/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 /usr/include/hdf5/serial/
LIBRARY_DIRS := $(PYTHON_LIB) /usr/local/lib /usr/lib /usr/lib/x86_64-linux-gnu /usr/lib/x86_64-linux-gnu/hdf5/serial
# 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
# Uncomment to use `pkg-config` to specify OpenCV library paths.
# (Usually not necessary -- OpenCV libraries are normally installed in one of the above $LIBRARY_DIRS.)
# USE_PKG_CONFIG := 1
# N.B. both build and distribute dirs are cleared on `make clean`
BUILD_DIR := build
DISTRIBUTE_DIR := distribute
# Uncomment for debugging. Does not work on OSX due to https://github.com/BVLC/caffe/issues/171
# DEBUG := 1
# The ID of the GPU that 'make runtest' will use to run unit tests.
TEST_GPUID := 0
# enable pretty build (comment to see full commands)
Q ?= @5.修改 Makefile 文件把下面第一行代码改为第二行代码：
将：LIBRARIES += glog gflags protobuf boost_system boost_filesystem m hdf5_hl hdf5
替换为：LIBRARIES += glog gflags protobuf boost_system boost_filesystem m hdf5_serial_hl hdf5_serial opencv_core opencv_imgproc opencv_imgcodecs opencv_highgui6.修改 Makefile 文件把下面第一段代码改为第二段代码：
将：
# Debugging
ifeq ($(DEBUG), 1)
COMMON_FLAGS += -DDEBUG -g -O0
NVCCFLAGS += -G
else
COMMON_FLAGS += -DNDEBUG -O2
endif修改为：
# Debugging
ifeq ($(DEBUG), 1)
COMMON_FLAGS += -DDEBUG -g -O0
NVCCFLAGS += -G
else
COMMON_FLAGS += -DNDEBUG -O2
NVCCFLAGS += -G
endif
# 注意这里的空格是使用“Tab”键来写的。也就是加一句 NVCCFLAGS += -G
7.在caffe-segnet-cudnn5-master目录下，进行编译
cd /home/zqzy/caffe-segnet-cudnn5-master
sudo make all -j88.执行下面这句话，将anconda路径下的Python3.6m，添加到CPLUS_INCLUDE_PATH
使用export是临时添加，可以使用“export”命令查看，如果重新打开一个终端，没有这个环境变量。
export CPLUS_INCLUDE_PATH=/home/zqzy/anaconda3/include/python3.6m报错：
/usr/include/boost/python/detail/wrap_python.hpp:50:23: fatal error: pyconfig.h:
No such file or directory解决：
sudo make clean
export CPLUS_INCLUDE_PATH=/你的anconda路径/include/python3.6m
即： export CPLUS_INCLUDE_PATH=/home/zqzy/anaconda3/include/python3.6m
sudo make all -j8原因：
python路径都改为了anaconda的路径，但是CPLUS的path没有设置，系统中我也没把aneconda设置成默认的python导致的。9.报错：
CXX .build_release/src/caffe/proto/caffe.pb.cc
AR -o .build_release/lib/libcaffe.a
LD -o .build_release/lib/libcaffe.so.1.0.0-rc3
/usr/bin/ld: cannot find -lpython3.6m
collect2: error: ld returned 1 exit status
Makefile:569: recipe for target '.build_release/lib/libcaffe.so.1.0.0-rc3' failed
make: *** [.build_release/lib/libcaffe.so.1.0.0-rc3] Error 1
解决方案：
建立软链接，因为/usr/lib下缺少 libpython3.6m 的软链接
cd /home/zqzy/anaconda3/lib
sudo ln -s libpython3.6m.so /usr/lib/
重新编译：
cd /home/zqzy/caffe-segnet-cudnn5-master/
sudo make clean
sudo make all -j810.报错：
CXX/LD -o .build_release/tools/test_net.bin
CXX/LD -o .build_release/tools/compute_image_mean.bin
CXX/LD -o .build_release/tools/upgrade_solver_proto_text.bin
CXX/LD -o .build_release/tools/upgrade_net_proto_text.bin
.build_release/tools/convert_imageset.o: In function `main':
convert_imageset.cpp:(.text.startup+0xeb7): undefined reference to `google::protobuf::MessageLite::SerializeToString(std::__cxx11::basic_string, std::allocator >*) const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::DescriptorPool::FindFileByName(std::__cxx11::basic_string, std::allocator > const&) const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::GeneratedMessageReflection::GeneratedMessageReflection(google::protobuf::Descriptor const*, google::protobuf::Message const*, int const*, int, int, int, google::protobuf::DescriptorPool const*, google::protobuf::MessageFactory*, int)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::StringTypeHandlerBase::Delete(std::__cxx11::basic_string, std::allocator >*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::ReadString(google::protobuf::io::CodedInputStream*, std::__cxx11::basic_string, std::allocator >*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::DebugString[abi:cxx11]() const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::MessageFactory::InternalRegisterGeneratedFile(char const*, void (*)(std::__cxx11::basic_string, std::allocator > const&))'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedInputStream::ReadVarint64Fallback(unsigned long*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteStringMaybeAliased(int, std::__cxx11::basic_string, std::allocator > const&, google::protobuf::io::CodedOutputStream*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::ReadBytes(google::protobuf::io::CodedInputStream*, std::__cxx11::basic_string, std::allocator >*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::MessageLite::ParseFromString(std::__cxx11::basic_string, std::allocator > const&)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::StringTypeHandlerBase::New[abi:cxx11]()'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedInputStream::ReadTagFallback()'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::GetTypeName[abi:cxx11]() const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedOutputStream::WriteStringWithSizeToArray(std::__cxx11::basic_string, std::allocator > const&, unsigned char*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::RepeatedPtrFieldBase::Swap(google::protobuf::internal::RepeatedPtrFieldBase*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::InitializationErrorString[abi:cxx11]() const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::NameOfEnum[abi:cxx11](google::protobuf::EnumDescriptor const*, int)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::empty_string_[abi:cxx11]'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedInputStream::ReadVarint32Fallback(unsigned int*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteBytesMaybeAliased(int, std::__cxx11::basic_string, std::allocator > const&, google::protobuf::io::CodedOutputStream*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedOutputStream::WriteVarint32FallbackToArray(unsigned int, unsigned char*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteString(int, std::__cxx11::basic_string, std::allocator > const&, google::protobuf::io::CodedOutputStream*)'
collect2: error: ld returned 1 exit status
Makefile:622: recipe for target '.build_release/tools/convert_imageset.bin' failed
make: *** [.build_release/tools/convert_imageset.bin] Error 1
make: *** Waiting for unfinished jobs....
.build_release/tools/extract_features.o: In function `int feature_extraction_pipeline(int, char**)':
extract_features.cpp:(.text._Z27feature_extraction_pipelineIfEiiPPc[_Z27feature_extraction_pipelineIfEiiPPc]+0xd16): undefined reference to `google::protobuf::internal::empty_string_[abi:cxx11]'
extract_features.cpp:(.text._Z27feature_extraction_pipelineIfEiiPPc[_Z27feature_extraction_pipelineIfEiiPPc]+0x15df): undefined reference to `google::protobuf::MessageLite::SerializeToString(std::__cxx11::basic_string, std::allocator >*) const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::DescriptorPool::FindFileByName(std::__cxx11::basic_string, std::allocator > const&) const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::GeneratedMessageReflection::GeneratedMessageReflection(google::protobuf::Descriptor const*, google::protobuf::Message const*, int const*, int, int, int, google::protobuf::DescriptorPool const*, google::protobuf::MessageFactory*, int)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::StringTypeHandlerBase::Delete(std::__cxx11::basic_string, std::allocator >*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::ReadString(google::protobuf::io::CodedInputStream*, std::__cxx11::basic_string, std::allocator >*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::DebugString[abi:cxx11]() const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::MessageFactory::InternalRegisterGeneratedFile(char const*, void (*)(std::__cxx11::basic_string, std::allocator > const&))'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedInputStream::ReadVarint64Fallback(unsigned long*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteStringMaybeAliased(int, std::__cxx11::basic_string, std::allocator > const&, google::protobuf::io::CodedOutputStream*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::ReadBytes(google::protobuf::io::CodedInputStream*, std::__cxx11::basic_string, std::allocator >*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::MessageLite::ParseFromString(std::__cxx11::basic_string, std::allocator > const&)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::StringTypeHandlerBase::New[abi:cxx11]()'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedInputStream::ReadTagFallback()'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::GetTypeName[abi:cxx11]() const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedOutputStream::WriteStringWithSizeToArray(std::__cxx11::basic_string, std::allocator > const&, unsigned char*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::RepeatedPtrFieldBase::Swap(google::protobuf::internal::RepeatedPtrFieldBase*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::InitializationErrorString[abi:cxx11]() const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::NameOfEnum[abi:cxx11](google::protobuf::EnumDescriptor const*, int)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedInputStream::ReadVarint32Fallback(unsigned int*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteBytesMaybeAliased(int, std::__cxx11::basic_string, std::allocator > const&, google::protobuf::io::CodedOutputStream*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedOutputStream::WriteVarint32FallbackToArray(unsigned int, unsigned char*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteString(int, std::__cxx11::basic_string, std::allocator > const&, google::protobuf::io::CodedOutputStream*)'
collect2: error: ld returned 1 exit status
Makefile:622: recipe for target '.build_release/tools/extract_features.bin' failed
make: *** [.build_release/tools/extract_features.bin] Error 1
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::DescriptorPool::FindFileByName(std::__cxx11::basic_string, std::allocator > const&) const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::GeneratedMessageReflection::GeneratedMessageReflection(google::protobuf::Descriptor const*, google::protobuf::Message const*, int const*, int, int, int, google::protobuf::DescriptorPool const*, google::protobuf::MessageFactory*, int)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::StringTypeHandlerBase::Delete(std::__cxx11::basic_string, std::allocator >*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::ReadString(google::protobuf::io::CodedInputStream*, std::__cxx11::basic_string, std::allocator >*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::DebugString[abi:cxx11]() const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::MessageFactory::InternalRegisterGeneratedFile(char const*, void (*)(std::__cxx11::basic_string, std::allocator > const&))'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedInputStream::ReadVarint64Fallback(unsigned long*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteStringMaybeAliased(int, std::__cxx11::basic_string, std::allocator > const&, google::protobuf::io::CodedOutputStream*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::ReadBytes(google::protobuf::io::CodedInputStream*, std::__cxx11::basic_string, std::allocator >*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::MessageLite::ParseFromString(std::__cxx11::basic_string, std::allocator > const&)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::StringTypeHandlerBase::New[abi:cxx11]()'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedInputStream::ReadTagFallback()'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::GetTypeName[abi:cxx11]() const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedOutputStream::WriteStringWithSizeToArray(std::__cxx11::basic_string, std::allocator > const&, unsigned char*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::RepeatedPtrFieldBase::Swap(google::protobuf::internal::RepeatedPtrFieldBase*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::InitializationErrorString[abi:cxx11]() const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::NameOfEnum[abi:cxx11](google::protobuf::EnumDescriptor const*, int)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::empty_string_[abi:cxx11]'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedInputStream::ReadVarint32Fallback(unsigned int*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteBytesMaybeAliased(int, std::__cxx11::basic_string, std::allocator > const&, google::protobuf::io::CodedOutputStream*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedOutputStream::WriteVarint32FallbackToArray(unsigned int, unsigned char*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteString(int, std::__cxx11::basic_string, std::allocator > const&, google::protobuf::io::CodedOutputStream*)'
collect2: error: ld returned 1 exit status
Makefile:622: recipe for target '.build_release/tools/upgrade_net_proto_binary.bin' failed
make: *** [.build_release/tools/upgrade_net_proto_binary.bin] Error 1
.build_release/tools/caffe.o: In function `train()':
caffe.cpp:(.text+0x2ada): undefined reference to `google::protobuf::internal::StringTypeHandlerBase::New[abi:cxx11]()'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::DescriptorPool::FindFileByName(std::__cxx11::basic_string, std::allocator > const&) const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::GeneratedMessageReflection::GeneratedMessageReflection(google::protobuf::Descriptor const*, google::protobuf::Message const*, int const*, int, int, int, google::protobuf::DescriptorPool const*, google::protobuf::MessageFactory*, int)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::StringTypeHandlerBase::Delete(std::__cxx11::basic_string, std::allocator >*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::ReadString(google::protobuf::io::CodedInputStream*, std::__cxx11::basic_string, std::allocator >*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::DebugString[abi:cxx11]() const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::MessageFactory::InternalRegisterGeneratedFile(char const*, void (*)(std::__cxx11::basic_string, std::allocator > const&))'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedInputStream::ReadVarint64Fallback(unsigned long*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteStringMaybeAliased(int, std::__cxx11::basic_string, std::allocator > const&, google::protobuf::io::CodedOutputStream*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::ReadBytes(google::protobuf::io::CodedInputStream*, std::__cxx11::basic_string, std::allocator >*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::MessageLite::ParseFromString(std::__cxx11::basic_string, std::allocator > const&)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedInputStream::ReadTagFallback()'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::GetTypeName[abi:cxx11]() const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedOutputStream::WriteStringWithSizeToArray(std::__cxx11::basic_string, std::allocator > const&, unsigned char*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::RepeatedPtrFieldBase::Swap(google::protobuf::internal::RepeatedPtrFieldBase*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::InitializationErrorString[abi:cxx11]() const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::NameOfEnum[abi:cxx11](google::protobuf::EnumDescriptor const*, int)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::empty_string_[abi:cxx11]'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedInputStream::ReadVarint32Fallback(unsigned int*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteBytesMaybeAliased(int, std::__cxx11::basic_string, std::allocator > const&, google::protobuf::io::CodedOutputStream*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedOutputStream::WriteVarint32FallbackToArray(unsigned int, unsigned char*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteString(int, std::__cxx11::basic_string, std::allocator > const&, google::protobuf::io::CodedOutputStream*)'
collect2: error: ld returned 1 exit status
Makefile:622: recipe for target '.build_release/tools/caffe.bin' failed
make: *** [.build_release/tools/caffe.bin] Error 1
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::DescriptorPool::FindFileByName(std::__cxx11::basic_string, std::allocator > const&) const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::GeneratedMessageReflection::GeneratedMessageReflection(google::protobuf::Descriptor const*, google::protobuf::Message const*, int const*, int, int, int, google::protobuf::DescriptorPool const*, google::protobuf::MessageFactory*, int)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::StringTypeHandlerBase::Delete(std::__cxx11::basic_string, std::allocator >*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::ReadString(google::protobuf::io::CodedInputStream*, std::__cxx11::basic_string, std::allocator >*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::DebugString[abi:cxx11]() const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::MessageFactory::InternalRegisterGeneratedFile(char const*, void (*)(std::__cxx11::basic_string, std::allocator > const&))'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedInputStream::ReadVarint64Fallback(unsigned long*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteStringMaybeAliased(int, std::__cxx11::basic_string, std::allocator > const&, google::protobuf::io::CodedOutputStream*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::ReadBytes(google::protobuf::io::CodedInputStream*, std::__cxx11::basic_string, std::allocator >*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::MessageLite::ParseFromString(std::__cxx11::basic_string, std::allocator > const&)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::StringTypeHandlerBase::New[abi:cxx11]()'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedInputStream::ReadTagFallback()'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::GetTypeName[abi:cxx11]() const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedOutputStream::WriteStringWithSizeToArray(std::__cxx11::basic_string, std::allocator > const&, unsigned char*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::RepeatedPtrFieldBase::Swap(google::protobuf::internal::RepeatedPtrFieldBase*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::InitializationErrorString[abi:cxx11]() const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::NameOfEnum[abi:cxx11](google::protobuf::EnumDescriptor const*, int)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::empty_string_[abi:cxx11]'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedInputStream::ReadVarint32Fallback(unsigned int*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteBytesMaybeAliased(int, std::__cxx11::basic_string, std::allocator > const&, google::protobuf::io::CodedOutputStream*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedOutputStream::WriteVarint32FallbackToArray(unsigned int, unsigned char*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteString(int, std::__cxx11::basic_string, std::allocator > const&, google::protobuf::io::CodedOutputStream*)'
collect2: error: ld returned 1 exit status
Makefile:622: recipe for target '.build_release/tools/upgrade_net_proto_text.bin' failed
make: *** [.build_release/tools/upgrade_net_proto_text.bin] Error 1
.build_release/tools/compute_image_mean.o: In function `main':
compute_image_mean.cpp:(.text.startup+0x30c): undefined reference to `google::protobuf::MessageLite::ParseFromString(std::__cxx11::basic_string, std::allocator > const&)'
compute_image_mean.cpp:(.text.startup+0x4ed): undefined reference to `google::protobuf::MessageLite::ParseFromString(std::__cxx11::basic_string, std::allocator > const&)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::DescriptorPool::FindFileByName(std::__cxx11::basic_string, std::allocator > const&) const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::GeneratedMessageReflection::GeneratedMessageReflection(google::protobuf::Descriptor const*, google::protobuf::Message const*, int const*, int, int, int, google::protobuf::DescriptorPool const*, google::protobuf::MessageFactory*, int)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::StringTypeHandlerBase::Delete(std::__cxx11::basic_string, std::allocator >*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::ReadString(google::protobuf::io::CodedInputStream*, std::__cxx11::basic_string, std::allocator >*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::DebugString[abi:cxx11]() const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::MessageFactory::InternalRegisterGeneratedFile(char const*, void (*)(std::__cxx11::basic_string, std::allocator > const&))'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedInputStream::ReadVarint64Fallback(unsigned long*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteStringMaybeAliased(int, std::__cxx11::basic_string, std::allocator > const&, google::protobuf::io::CodedOutputStream*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::ReadBytes(google::protobuf::io::CodedInputStream*, std::__cxx11::basic_string, std::allocator >*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::StringTypeHandlerBase::New[abi:cxx11]()'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedInputStream::ReadTagFallback()'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::GetTypeName[abi:cxx11]() const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedOutputStream::WriteStringWithSizeToArray(std::__cxx11::basic_string, std::allocator > const&, unsigned char*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::RepeatedPtrFieldBase::Swap(google::protobuf::internal::RepeatedPtrFieldBase*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::InitializationErrorString[abi:cxx11]() const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::NameOfEnum[abi:cxx11](google::protobuf::EnumDescriptor const*, int)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::empty_string_[abi:cxx11]'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedInputStream::ReadVarint32Fallback(unsigned int*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteBytesMaybeAliased(int, std::__cxx11::basic_string, std::allocator > const&, google::protobuf::io::CodedOutputStream*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedOutputStream::WriteVarint32FallbackToArray(unsigned int, unsigned char*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteString(int, std::__cxx11::basic_string, std::allocator > const&, google::protobuf::io::CodedOutputStream*)'
collect2: error: ld returned 1 exit status
Makefile:622: recipe for target '.build_release/tools/compute_image_mean.bin' failed
make: *** [.build_release/tools/compute_image_mean.bin] Error 1
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::DescriptorPool::FindFileByName(std::__cxx11::basic_string, std::allocator > const&) const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::GeneratedMessageReflection::GeneratedMessageReflection(google::protobuf::Descriptor const*, google::protobuf::Message const*, int const*, int, int, int, google::protobuf::DescriptorPool const*, google::protobuf::MessageFactory*, int)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::StringTypeHandlerBase::Delete(std::__cxx11::basic_string, std::allocator >*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::ReadString(google::protobuf::io::CodedInputStream*, std::__cxx11::basic_string, std::allocator >*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::DebugString[abi:cxx11]() const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::MessageFactory::InternalRegisterGeneratedFile(char const*, void (*)(std::__cxx11::basic_string, std::allocator > const&))'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedInputStream::ReadVarint64Fallback(unsigned long*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteStringMaybeAliased(int, std::__cxx11::basic_string, std::allocator > const&, google::protobuf::io::CodedOutputStream*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::ReadBytes(google::protobuf::io::CodedInputStream*, std::__cxx11::basic_string, std::allocator >*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::MessageLite::ParseFromString(std::__cxx11::basic_string, std::allocator > const&)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::StringTypeHandlerBase::New[abi:cxx11]()'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedInputStream::ReadTagFallback()'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::GetTypeName[abi:cxx11]() const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedOutputStream::WriteStringWithSizeToArray(std::__cxx11::basic_string, std::allocator > const&, unsigned char*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::RepeatedPtrFieldBase::Swap(google::protobuf::internal::RepeatedPtrFieldBase*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::Message::InitializationErrorString[abi:cxx11]() const'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::NameOfEnum[abi:cxx11](google::protobuf::EnumDescriptor const*, int)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::empty_string_[abi:cxx11]'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedInputStream::ReadVarint32Fallback(unsigned int*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteBytesMaybeAliased(int, std::__cxx11::basic_string, std::allocator > const&, google::protobuf::io::CodedOutputStream*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::io::CodedOutputStream::WriteVarint32FallbackToArray(unsigned int, unsigned char*)'
.build_release/lib/libcaffe.so: undefined reference to `google::protobuf::internal::WireFormatLite::WriteString(int, std::__cxx11::basic_string, std::allocator > const&, google::protobuf::io::CodedOutputStream*)'
collect2: error: ld returned 1 exit status
Makefile:622: recipe for target '.build_release/tools/upgrade_solver_proto_text.bin' failed
make: *** [.build_release/tools/upgrade_solver_proto_text.bin] Error 1
原因：
因为anaconda里面安装的protobuf，系统本身安装的protobuf版本有了冲突所以就一直出错。
目前自己安装了protobuf2.6.1：
下载： https://github.com/google/protobuf/releases/download/v2.6.1/protobuf-2.6.1.tar.gz
安装过程：
安装protobuf
tar -xvf protobuf
cd protobuf
./configure --prefix=/usr/local/protobuf
make
make check
sudo make install
至此安装完成^_^，下面是配置：
(1) sudo gedit /etc/profile，添加
export PATH=$PATH:/usr/local/protobuf/bin/
export PKG_CONFIG_PATH=/usr/local/protobuf/lib/pkgconfig/
保存执行，source /etc/profile。同时在sudo gedit ~/.profile中添加上面两行代码，否则会出现登录用户找不到protoc命令。
(2) 配置动态链接库
sudo gedit /etc/ld.so.conf，在文件中添加/usr/local/protobuf/lib（注意: 在新行处添加），然后执行命令: ldconfig参考：
1.https://blog.csdn.net/whoamiyang/article/details/52947225
2.https://blog.csdn.net/wangyjfrecky/article/details/70154214
3.https://www.cnblogs.com/luoxn28/p/5303517.html
修改该错误，参考：
https://blog.csdn.net/jiachen0212/article/details/79578458
https://blog.csdn.net/qq_17278169/article/details/64128525
https://www.zhihu.com/question/58592005/answer/270998973
https://blog.csdn.net/ziyouyi111/article/details/79358401
https://blog.csdn.net/Dorothy_Xue/article/details/79820964
目前把 caffe-segnet-cudnn5-master 中的 Makefile中的 protobuf 修改成自己安装的 protobuf2.6.1了，但是系统调用的还是anaconda3中的。所以错误还在。
