A little trouble initializing SDL
Author
Hi :)
I hope you can help me. I am trying to get started with SDL in C++ and Visual C++ 2005 express edition.
I have this short code:
#include "sdl\SDL.h"
int main()
{
SDL_Init(SDL_INIT_AUDIO|SDL_INIT_VIDEO);
atexit(SDL_Quit);
return 0;
}
Which I think should compile normally but I get these error messages:
------ Build started: Project: SDL_tests, Configuration: Debug Win32 ------
Compiling...
main.cpp
Linking...
main.obj : error LNK2019: unresolved external symbol _SDL_Quit referenced in function "int __cdecl SDL_main(void)" (?SDL_main@@YAHXZ)
main.obj : error LNK2019: unresolved external symbol _SDL_Init referenced in function "int __cdecl SDL_main(void)" (?SDL_main@@YAHXZ)
LIBCMT.lib(crt0.obj) : error LNK2019: unresolved external symbol _main referenced in function ___tmainCRTStartup
C:\Documents and Settings\Kristinn Esmar\My Documents\Visual Studio 2005\Projects\SDL_tests\Debug\SDL_tests.exe : fatal error LNK1120: 3 unresolved externals
Build log was saved at "file://c:\Documents and Settings\Kristinn Esmar\My Documents\Visual Studio 2005\Projects\SDL_tests\SDL_tests\Debug\BuildLog.htm"
SDL_tests - 4 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
Anyone have any idea what is wrong?
You have your int main() function declared incorrectly.
For reasons that have been explained to me multiple times that I always forget([smile]), you must create you main() function as:
int main(int argc, char* args[])
Hope that is what you were looking for.
For reasons that have been explained to me multiple times that I always forget([smile]), you must create you main() function as:
int main(int argc, char* args[])
Hope that is what you were looking for.
Author
I changed it to
int main(int argc, char* args[])
but I still get the exact same errors.
int main(int argc, char* args[])
but I still get the exact same errors.
Quote:Original post by Servant of the Lord
You have your int main() function declared incorrectly.
For reasons that have been explained to me multiple times that I always forget([smile]), you must create you main() function as:
int main(int argc, char* args[])
Hope that is what you were looking for.
SDL does some funky name mangling so that your main becomes SDL_main and SDL actually does your main... So if you don't do (int, char**) SDL won't know to replace it and thus would give errors.
Also, did you link to SDL.lib and SDLmain.lib:
#pragma comment(lib, "SDLmain.lib")#pragma comment(lib, "SDL.lib")// at the very top
Yes you must change your main function. If those same error messages come up then...it seems like some stuff is linked wrong. Check how you are linking them There are 2 possible mains. They are as followed:
I hope that helps.
Chad.
int main(int argc, char* argv[]);...//orint main(int argc, char** argv);I hope that helps.
Chad.
I've changed the category to multithreaded dll, told it not to use precompiled headers and changed the code to this:
#include "SDL.h"
int main( int argc, char* args[] )
{ //Start SDL
SDL_Init( SDL_INIT_EVERYTHING );
//Quit SDL
SDL_Quit();
return 0;
}
now I only get one error...
LINK : fatal error LNK1561: entry point must be defined
Doesnt seem to work :*(
#include "SDL.h"
int main( int argc, char* args[] )
{ //Start SDL
SDL_Init( SDL_INIT_EVERYTHING );
//Quit SDL
SDL_Quit();
return 0;
}
now I only get one error...
LINK : fatal error LNK1561: entry point must be defined
Doesnt seem to work :*(
Quote:Original post by Anonymous Poster
I've changed the category to multithreaded dll, told it not to use precompiled headers and changed the code to this:
#include "SDL.h"
int main( int argc, char* args[] )
{ //Start SDL
SDL_Init( SDL_INIT_EVERYTHING );
//Quit SDL
SDL_Quit();
return 0;
}
now I only get one error...
LINK : fatal error LNK1561: entry point must be defined
Doesnt seem to work :*(
Did you add the #pragmas like I said above?
Author
yeah, it didnt change anything.. I also tried putting the libs in as additional dependencies.
Author
Ahh.. I started a new application... The earlyer one was an empty one.. Now I started a console app (win32) and it works when I add the libs as dependancies. Thanks guys for your help :)
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