Linker Error when using the SDL Library: _main already defined in main.obj

问题

So I already know why this error happens, inside the SDL_main.h file a 'main' macro is being created, which will cause problems with your actual main function.

It's just that none of the obvious workarounds seem to be helping me. I have tried:

1. Defining my main function with (int argc, char* argv[]).

2. Tried it with C linkage like the comments in SDL_main.h suggest:

   *  The application's main() function must be called with C linkage,
   *  and should be declared like this:
   *  \code
   *  #ifdef __cplusplus
   *  extern "C"
   *  #endif
   *  int main(int argc, char *argv[])
   *  {
   *  }
   *  \endcode
   

3. Tried undefining main.

Are there any other tricks I can try in order to get the main function working normally again?

回答1:

Try also this at the top of your main.cpp file:

#define SDL_MAIN_HANDLED

That is supposed to cause SDL to skip all of its main nonsense.

Note that it needs to happen before you include SDL:

#define SDL_MAIN_HANDLED
#include "SDL2/SDL.h"

来源：https://stackoverflow.com/questions/38803379/linker-error-when-using-the-sdl-library-main-already-defined-in-main-obj