CODEWITHSUNDEEP
homebrewsdl-2
Jaap Wijnen
Jaap Wijnen

Reputation: 457

Using homebrew installed SDL2 with Xcode

I have installed SDL2 using Homebrew but now I don't know how to make sure Xcode can use it! I imported the created library and added it to the build phases tab of my project. But when I try to build I get the error 'SDL2/SDL.h' not found

Upvotes: 19

Views: 21327

Answers (4)

Sasq
Sasq

Reputation: 505

Including SDL2 as <SDL2/SDL.h> is incorrect. It should be included as <SDL.h>. Now sdl2-config --cflags will give you the correct path.

The former only works if SDL2 has been installed into one of the default include paths, which is not the case with homebrew (but common in Linux which is why you see the former so much in the wild).

(One can argue it would have been better if SDL2 had put its headers into a sub-directory, but they didn't).

Upvotes: 1

user14686569
user14686569

Reputation:

  1. Install installed homebrew from https://brew.sh

  2. Type in terminal brew install sdl2

  3. Then show the path of framework (in xCode select project file >> build settings >> header search paths) and using cmd+shift+g type /usr/local/include

  4. In 'General' 'Frameworks & Libraries' put libSDL2-2.0.0.dylib (its here /usr/local/Cellar/sdl2/2.0.14_1/lib)

  5. And most important check 'Disable Library Validations' in 'Signing & Capabilities'

After these steps code started to work for me.

Upvotes: 4

tomgtbst
tomgtbst

Reputation: 77

  1. brew search sdl2

  2. brew install sdl2 sdl2_image sdl2_mixer sdl2_net sdl2_ttf

  3. config xcode Build Settings --> All --> Search Paths --> Header Serch Paths
    --> /usr/local/include

  4. config Xcode General ->add Frameworks and Libraries --> libSDL2-2.0.0.dylib

  5. test your code 

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

using namespace std;

int main() {

    if(SDL_Init(SDL_INIT_VIDEO) < 0) {
        cout << "SDL init failed." << endl;
        return 1;
    }

    cout << "SDL Init succeeded." << endl;

    SDL_Quit();

    return 0;
}

Upvotes: 1

Jack
Jack

Reputation: 133557

To be able to use SDL2 on Xcode you must set two things (which are required for SDL in general):

  • where to find header files (so that Clang can compile with -Iheader/path)
  • where to find the .dylib to link it to the project (since with brew you don't have a real .framework)

To know the correct paths you should invoke sdl2-config --cflags and sdl2-config --libs. On my system these produce:

:~jack$ /usr/local/bin/sdl2-config --cflags
-I/usr/local/include/SDL2 -I/usr/X11R6/include -D_THREAD_SAFE

:~jack$ /usr/local/bin/sdl2-config --libs
-L/usr/local/lib -lSDL2

Now just paste the first one into other C flags and the other one into other linker flags field of your project and you are ready to go.

You could set them up in the correct fields, which is Header Search Paths for -I and Library Search Path for -l but the result will be the same.

Upvotes: 36

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