CODEWITHSUNDEEP
sdld
Alexandre Hoffmann
Alexandre Hoffmann

Reputation: 341

D programming with Derelict and SDL

Hello I recently download Derelict2 by checking out the Derelict2 branch here and I try a little program with SDL : 

import derelict.sdl.sdl;

int main()
{
  bool run = true;
  SDL_Init(SDL_INIT_VIDEO);
  SDL_SetVideoMode(400, 300, 32, SDL_HWSURFACE | SDL_RESIZABLE | SDL_DOUBLEBUF);
  SDL_Event event;
  while(run)
  {
    SDL_WaitEvent(&event);
    switch(event.type)
    {
      case SDL_QUIT:
      run = false;
    } 
  }
  return 0;
}

I compile with this command line :

ldc2 -I=/usr/include/d/Derectlict2/DerelictSDL -I=/usr/include/d/Derectlict2/DerelictUtil -of=../bin/test -release -run main.d

but there is this error : 

../bin/test.o: In function `_Dmain':
main:(.text+0x40): undefined reference to `_D8derelict3sdl8sdlfuncs8SDL_InitPUkZi'
main:(.text+0x69): undefined reference to `_D8derelict3sdl8sdlfuncs16SDL_SetVideoModePUiiikZPS8derelict3sdl8sdltypes11SDL_Surface'
main:(.text+0xa2): undefined reference to `_D8derelict3sdl8sdlfuncs13SDL_WaitEventPUPS8derelict3sdl8sdltypes9SDL_EventZi'
../bin/test.o:(.rodata+0x2c): undefined reference to `_D8derelict3sdl3sdl8__ModuleZ'
collect2: ld returned 1 exit status
Error: linking failed:
status: 1

I'm a really beginner in D and in programming in general, and I don't understand what's are the object file.

So if anyone understand what I did wrong please tell me

Upvotes: 1

Views: 2910

Answers (2)

Trass3r
Trass3r

Reputation: 6287

Just use rdmd like that, second line.

Strange thing is though, that it complains about _D8derelict3sdl8sdlfuncs8SDL_InitPUkZi. Looks like an extern(C) is missing.

Upvotes: 1

Peter Alexander
Peter Alexander

Reputation: 54270

You need to link with Derelict2's libraries.

Below the imports, add:

pragma(lib, "relevant-libraries");

For example:

pragma(lib, "/usr/include/d/Derelict2/lib/libDerelictGL.a");
pragma(lib, "/usr/include/d/Derelict2/lib/libDerelictGLU.a");
pragma(lib, "/usr/include/d/Derelict2/lib/libDerelictSDL.a");
pragma(lib, "/usr/include/d/Derelict2/lib/libDerelictUtil.a");

If you are on Windows then those library files will be .libs

Alternatively, you can add the files to your build command by adding these flags:

-L/usr/inlcude/d/Derelict2/lib/libDerelictSDL.a -L/usr/ ... etc.

By the looks of things, you should only need to reference the SDL library.

Upvotes: 1

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