[Mingw-users] DLLs

[Edmund Ng <edm...@sc...>]

Folks,


Just a quick question regarding cross compiling a dll.  I was just
wondering if anyone was able to make dll using a cross compiler.  I"m
having particular trouble with the dllwrap which seems to enjoy
providing sementation faults for me.  I am only trying to compile very
simple code show below:


THE HEADER FILE

#ifndef cdll_h_included
#define cdll_h_included

/*
 * When building the DLL code, you should define BUILDING_DLL so that
 * the variables/functions are exported correctly. When using the DLL,
 * do NOT define BUILDING_DLL, and then the variables/functions will
 * be imported correctly.
 *
 * You need to be using egcs-1.1.1 or newer.
 *
 * Building the DLL:
 *  - define BUILDING_DLL, which defines DLLIMPORT
__attribute__((dllexport))
 * Building the client code:
 *  - DO NOT define BUILDING_DLL, which defines DLLIMPORT to be one
 *    __attribute__((dllimport))
 */

#if BUILDING_DLL
# define DLLIMPORT __declspec (dllexport)
#else /* Not BUILDING_DLL */
# define DLLIMPORT __declspec (dllimport)
#endif /* Not BUILDING_DLL */

DLLIMPORT double dll_double_square (double);

#endif /* cdll_h_included */





THE C FILE

#include "cdll.h"

DLLIMPORT double dll_double_square (double d)
{
  return d * d;
}


I'm all out of ideas on how to approach this thing so if anyone has any
ideas, please feel free to send it.


Thanks a lot!

Edmund