caffe目录：
├── build -> .build_release // make生成目录，生成各种可执行bin文件，直接调用入口；
├── cmake
├── CMakeLists.txt
├── CONTRIBUTING.md
├── CONTRIBUTORS.md
├── data
├── distribute
├── docker
├── docs
├── examples //很多demo可以尝试使用；
├── include
├── INSTALL.md
├── LICENSE
├── Makefile
├── Makefile.config
├── Makefile.config.example
├── matlab
├── models
├── python
├── README.md
├── scripts
├── src // src/caffe/solver.cpp,net.cpp,layer.cpp,blob.cpp等核心函数；
└── tools //主要使用caffe.cpp，进行调用src下面各个子函数；另外tools/extra下提供一些辅助函数
1. 使用gdb直接调试工程
配置参考：Caffe源码调试
主要打开：修改Makefile.config：DEBUG := 1 ；生成如下目录：
lrwxrwxrwx 1 root root 12 1月 3 16:37 build -> .build_debug/ drwxr-xr-x 12 root root 4096 1月 3 16:37 .build_debug/ drwxr-xr-x 12 root root 4096 1月 3 16:37 .build_release/
使用GDB启动调试，执行gdb --args build/tools/caffe train --solver examples/mnist/lenet_solver.prototxt ；可以直接调试；
rjw@rjw:~/caffe$ gdb --args build/tools/caffe train --solver examples/mnist/lenet_solver.prototxt GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.5) 7.11.1 Copyright (C) 2016 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from build/tools/caffe...(no debugging symbols found)...done. (gdb) (gdb) q
2. 使用Vscode进行调试：
配置c_cpp_properties.json 和launch.json ;