维护用 C/C++ 开发的遗留系统并添加新特性是一项艰难的任务。这涉及几方面的问题：理解现有的类层次结构和全局变量，不同的用户定义类型，以及函数调用图分析等等。
1.install
doxygen install guide: http://www.doxygen.nl/download.html
If you have the necessary build tools installed (i.e. g++, python, cmake, flex, bison), you should do the following to get the initial copy of the repository:
- flex: fast lexical analyzer generator https://www.gnu.org/software/flex/
git clone https://github.com/doxygen/doxygen.git cd doxygen
After that you can use
mkdir build cd build cmake -G "Unix Makefiles" .. make
To force a fresh build after an earlier check-out simple remove the build directory and redo the steps above.
After the binaries have been built, you can use
make install
to install them.
Reference
1. https://www.ibm.com/developerworks/cn/aix/library/au-learningdoxygen/index.html
2. doxygen official website: http://www.doxygen.nl/index.html