这是ｃａｆｆｅ安装过程 中间遇到的问题下面总结：
https://blog.csdn.net/zt_1995/article/details/56283249
下面这个链接是处理这个问题填写下面语句
LIBRARIES += glog gflags protobuf boost_system boost_filesystem m hdf5_serial_hl hdf5_serial opencv_core opencv_highgui opencv_imgproc opencv_imgcodecs
https://blog.csdn.net/forest_world/article/details/51371560
问题一：
CXX/LD -o .build_release/tools/convert_imageset.bin
.build_release/lib/libcaffe.so: undefined reference to cv::imread(cv::String const&, int)' .build_release/lib/libcaffe.so: undefined reference tocv::imencode(cv::String const&, cv::_InputArray const&, std::vector >&, std::vector > const&)'
.build_release/lib/libcaffe.so: undefined reference to `cv::imdecode(cv::_InputArray const&, int)'
collect2: error: ld returned 1 exit status
make: *** [.build_release/tools/convert_imageset.bin] Error 1
.build_release/lib/libcaffe.so: undefined reference to cv::imread(cv::String const&, int)’ .
解决：
首先，我是已经配置过了opencv的，可以这样查询安装版本：
$ pkg-config --modversion opencv
因为编译好了，理所当然，输出结果是3.４.１
所以出现上面的错误，应该是opencv_imgcodecs链接的问题，比较有效的解决方案是，把opencv需要的lib添加到Makefile文件中，找到LIBRARIES（在PYTHON_LIBRARIES := boost_python python2.7 前一行）并修改为：
LIBRARIES += glog gflags protobuf leveldb snappy \ lmdb boost_system hdf5_hl hdf5 m \ opencv_core opencv_highgui opencv_imgproc opencv_imgcodecs
在 Makefile.config中OPENCV_VERSION := 3取消注释（亲测可用）
输入完上面后保存退出 在命令行出输入 make all 后还是报错 在命令行输入 rm -rf ./build/* 在 make clean
在 make all 后会遇到下个问题如下：
问题二：
“fatal error: hdf5.h: 没有那个文件或目录”解决方法
解决：
https://blog.csdn.net/xue_wenyuan/article/details/52037121
问题三：
CXX src/caffe/solver.cpp
AR -o .build_release/lib/libcaffe.a
LD -o .build_release/lib/libcaffe.so.1.0.0-rc3
/usr/bin/ld: cannot find -lhdf5_hl
/usr/bin/ld: cannot find -lhdf5
collect2: error: ld returned 1 exit status
Makefile:566: 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：
参考：http://blog.csdn.net/oyjxer/article/details/51824254安装，报错和你一样，
然后修改Makefile 文件（注意不是）Makefile.config
将里面的
LIBRARIES += glog gflags protobuf boost_system boost_filesystem m hdf5_hl hdf5
改为LIBRARIES += glog gflags protobuf boost_system boost_filesystem m hdf5_serial_hl hdf5_serial
do as issue 12. Change the Makefile.config:
# 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/hdf5/serial
问题三：
.build_release/lib/libcaffe.so: undefined reference to `boost::re_detail_106501::cpp_reg 相关问题
解决：