SDL 2 C Compiler Flags

Question

Whenever I run the following, I get undefined references to all the SDL-related functions used in my program:

cc -lSDL2 -lGL *.o

I believe this is caused by the lack of -l linker flags.

Answer 1

To link to SDL and OpenGL:

cc *.o -lSDL2 -lGL ...

For Linux systems, you should use pkg-config:

cc -c main.c $(pkg-config sdl2 --cflags)
cc main.o $(pkg-config sdl2 --libs)

(Make sure linker arguments like -l go after your source files)