I have tried compiling a test code I found online:

#include <SDL2/SDL.h>
#include <iostream>

int main()
{
    if(SDL_Init(SDL_INIT_VIDEO) < 0)
    {
        std::cout << "Failed to initialize the SDL2 libraryn";
        return -1;
    }

    SDL_Window *window = SDL_CreateWindow("SDL2 Window",
                                          SDL_WINDOWPOS_CENTERED,
                                          SDL_WINDOWPOS_CENTERED,
                                          680, 480,
                                          0);

    if(!window)
    {
        std::cout << "Failed to create windown";
        return -1;
    }

    SDL_Surface *window_surface = SDL_GetWindowSurface(window);

    if(!window_surface)
    {
        std::cout << "Failed to get the surface from the windown";
        return -1;
    }

    SDL_UpdateWindowSurface(window);

    SDL_Delay(5000);
}

But it outputs:

main.cpp:1:10: fatal error: 'SDL2/SDL.h' file not found
#include <SDL2/SDL.h>
         ^~~~~~~~~~~~
1 error generated.

The problem is: I have already installed SDL2, SDL2_image and SDL2_ttf through homebrew on my Mac.

From what I have read online, I shouldn’t have to link stuff in the command since I have those installed and that I should only use “-lSDL2”

I am a beginner in C++ and I really don’t understand how libraries work.