#include <dlfcn.h>

#include <stdio.h>

extern void constr (void) __attribute__ ((__constructor__));

void

__attribute__ ((__constructor__))

constr (void)

{

  void *handle;

  /* Open the library.  */

  handle = dlopen (NULL, RTLD_NOW);

  if (handle == NULL)

    {

      puts ("Cannot get handle to own object");

      return;

    }

  /* Get a symbol.  */

  dlsym (handle, "main");

  puts ("called dlsym() to get main");

  dlclose (handle);

}