elf/reldepmod4.c

   1 #include <dlfcn.h>
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4
   5 int
   6 call_me (void)
   7 {
   8   void *h;
   9   int (*fp) (void);
  10   int res;
  11
  12   h = dlopen ("reldepmod1.so", RTLD_LAZY);
  13   if (h == NULL)
  14     {
  15       printf ("cannot open reldepmod1.so in %s: %s\n", __FILE__, dlerror ());
  16       exit (1);
  17     }
  18
  19   fp = dlsym (h, "foo");
  20   if (fp == NULL)
  21     {
  22       printf ("cannot get address of foo in global scope: %s\n", dlerror ());
  23       exit (1);
  24     }
  25
  26   res = fp () - 42;
  27
  28   if (dlclose (h) != 0)
  29     {
  30       printf ("failure when closing h in %s: %s\n", __FILE__, dlerror ());
  31       exit (1);
  32     }
  33
  34   return res;
  35 }