man gcc
... -I dir Add the directory dir to the list of directories to be searched for header files. ... -Ldir Add directory dir to the list of directories to be searched for -l. ... -Wl,option Pass option as an option to the linker. If option contains commas, it is split into multiple options at the commas. ...
-l是加一个编译时查找头文件的路径; -L是加一个编译时查找动态库的路径; -Wl 是把-rpath 传递为linker的选项;
man ld ... -rpath dir Add a directory to the runtime library search path. ...
-rpath 是加一个运行时查找动态库的路径; |