1、安装依赖库也能出问题
命令行输入：
sudo apt-get install libprotobuf-dev libleveldb-dev libsnappy-dev libopencv-dev libhdf5-serial-dev protobuf-compiler
出现错误：
Could not find /boot/grub/menu.lst file. Would you like /boot/grub/menu.lst generated for you? (y/N) /usr/sbin/update-grub: 第 1094 行: read: 读错误: 0: 错误的文件描述符 run-parts: /etc/kernel/postinst.d/zz-update-grub exited with return code 1 dpkg: 处理软件包 linux-image-4.15.0-29-generic (--configure)时出错： 子进程 已安装 post-installation 脚本 返回错误状态 1 在处理时有错误发生： linux-image-4.15.0-29-generic E: Sub-process /usr/bin/dpkg returned an error code (1)
解决办法：
cd /boot/grub
之后：
sudo update-grub
再安装依赖库就可以了。
2、Caffe倒是很容易配置好，编译matcaffe的时候，出现问题：
1 Invalid MEX-file ‘caffe/matlab/+caffe/private/caffe_.mexa64‘: 2 caffe/matlab/+caffe/private/caffe_.mexa64: undefined 3 symbol: _ZN2cv8imencodeERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEERKNS_11_InputArrayERSt6vectorIhSaIhEERKSB_IiSaIiEE。 4 5 Error in caffe.set_mode_cpu (line 5) 6 caffe_(‘set_mode_cpu‘); 7 8 Error in caffe.run_tests (line 6) 9 caffe.set_mode_cpu();
有些说法是要执行如下命令：
1 export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libopencv_highgui.so.2.4:/usr/lib/x86_64-linux-gnu/libopencv_imgproc.so.2.4:/usr/lib/x86_64-linux-gnu/libopencv_core.so.2.4:/usr/lib/x86_64-linux-gnu/libstdc++.so.6:/usr/lib/x86_64-linux-gnu/libfreetype.so.6 2 export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libstdc++.so.6 但是再次运行make mattest时会有新错误：
1 malloc: unknown:0: assertion botched 2 free: called with unallocated block argument 3 last command: (null) 4 Aborting...find: ‘bash’ terminated by signal 6
虽然最后还是能运行成功，但发现在运行bash指令时无法成功执行，纠结了好久发现是这里没有彻底解决问题，解决方法是：
将 libopencv_imgproc.so.2.4, libopencv_core.so.2.4, libopencv_highgui.so.2.4三个文件拷贝到/usr/local/MATLAB/R2016b/bin/glnxa64/中
sudo mv /usr/local/MATLAB/R2016a/bin/glnxa64/libopencv_imgproc.so.2.4.9 /usr/local/MATLAB/R2016a/bin/glnxa64/libopencv_imgproc.so.2.4.old sudo cp /usr/lib/x86_64-linux-gnu/libopencv_imgproc.so.2.4 /usr/local/MATLAB/R2016a/bin/glnxa64/ sudo mv /usr/local/MATLAB/R2016a/bin/glnxa64/libopencv_core.so.2.4.9 /usr/local/MATLAB/R2016a/bin/glnxa64/libopencv_core.so.2.4.old sudo cp /usr/lib/x86_64-linux-gnu/libopencv_core.so.2.4 /usr/local/MATLAB/R2016a/bin/glnxa64/ sudo mv /usr/local/MATLAB/R2016a/bin/glnxa64/libopencv_highgui.so.2.4.9 /usr/local/MATLAB/R2016a/bin/glnxa64/libopencv_highgui.so.2.4.old sudo cp /usr/lib/x86_64-linux-gnu/libopencv_highgui.so.2.4 /usr/local/MATLAB/R2016a/bin/glnxa64/
注：上面是我的matlab、opencv版本以及路径。
再执行：
1 export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libstdc++.so.6 bash指令没有问题了，搞定。
原文：https://www.cnblogs.com/ariel-dreamland/p/9364535.html