compile and link

1. C 中 头文件的作用？

2. difference between *.a and *.so?

3. object file and executable file

4. search path of linker

system default search paths

ldconfig to set the system default search path

 

5. -Wl 和-Xlinker 的区别

　　Xlinker -export-dynamic test.cpp -Wl,--verbose