SDL2 won't link properly

16,572

Solution 1

A bit late, but I just stumbled over a similar problem on Linux.

This results in linker errors:

g++ $(pkg-config --cflags --libs sdl2) sdl2test.cpp 

sdl2test.cpp:(.text+0x11): undefined reference to `SDL_Init'
sdl2test.cpp:(.text+0x20): undefined reference to `SDL_GetError'
sdl2test.cpp:(.text+0x34): undefined reference to `SDL_Quit'

This works:

g++ sdl2test.cpp $(pkg-config --cflags --libs sdl2)

Solution 2

even if this is an Linux Problem, i came throug this post via google.

Mayb it could help someone else: i had the same Problem with Windows XP 32bit Codeblocks: Mingw + SDL2 and i fixed it after i copied the right SDLFolders (include, lib...) to the mingw-folder. The reason why i trapped to this pifall is that the naming of the SDL-Rootfolder, out of the DEV-Pack is a bit confusing. You got a "x86_64-w64-mingw32"-Folder which is for 64bit Compiler and "i686-w64-mingw32" which is for 32bit Compiler (like the moste still are). i messed this up because of the "x86..."naming, still dont know why they are writing it this way.

After overwriting the right files it works fine for me.

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Updated on June 04, 2022

Comments

  • Admin
    Admin almost 2 years

    I'm using Code::Blocks, that's my code:

    #include "SDL2/SDL.h"
    int main(int argc, char* args[]) {
        SDL_Init( SDL_INIT_EVERYTHING );
        SDL_Quit();
        return 0;
    }
    

    I'm building like:

    mingw32-g++.exe -o C:\..\main.exe C:\..\main.o  -lmingw32 -lSDL2main -lSDL2
    

    And getting that:

    undefined reference to "SDL_Init"
    undefined reference to "SDL_Quit"
    

    I'm pretty sure the linker finds the libs cause if I change them to something random it complains "can't find whatever".