What do the GCC flags mean?

Question

GCC

Hello.

Have a follow up question, what do the following flags mean when compiling?
gcc -o main main.o -lxdo
Some of the -lxdo flags I understood, but others not so much. Maybe someone knows how they are decrypted.

Thank you.

Answer 1

-o (output) - the name of the output file
-l (library) - the name of the library to link to (-lxdo means "use the libxdo library").

Answer 2

https://man7.org/linux/man-pages/man1/gcc.1.html