1  #include <dlfcn.h>
       2  #include <error.h>
       3  #include <stdio.h>
       4  #include <stdlib.h>
       5  
       6  int
       7  main (void)
       8  {
       9    void *h;
      10    int (*fp) (int);
      11    int res;
      12  
      13    h = dlopen ("${ORIGIN}/testobj1.so", RTLD_LAZY);
      14    if (h == NULL)
      15      error (EXIT_FAILURE, 0, "while loading `%s': %s", "testobj1.so",
      16  	   dlerror ());
      17  
      18    fp = dlsym (h, "obj1func1");
      19    if (fp == NULL)
      20      error (EXIT_FAILURE, 0, "getting `obj1func1' in `%s': %s",
      21  	   "testobj1.so", dlerror ());
      22  
      23    res = fp (10);
      24    printf ("fp(10) = %d\n", res);
      25  
      26    if (dlclose (h) != 0)
      27      error (EXIT_FAILURE, 0, "while close `%s': %s",
      28  	   "testobj1.so", dlerror ());
      29  
      30    return res != 42;
      31  }
      32  
      33  
      34  extern int foo (int a);
      35  int
      36  foo (int a)
      37  {
      38    return a + 10;
      39  }