1 #include <dlfcn.h> 2 #include <stdio.h> 3 #include <stdlib.h> 4 5 extern int call_me (void); 6 7 int call_me(void)8call_me (void) 9 { 10 void *h; 11 int (*fp) (void); 12 int res; 13 14 h = dlopen ("reldepmod1.so", RTLD_LAZY); 15 if (h == NULL) 16 { 17 printf ("cannot open reldepmod1.so in %s: %s\n", __FILE__, dlerror ()); 18 exit (1); 19 } 20 21 fp = dlsym (h, "foo"); 22 if (fp == NULL) 23 { 24 printf ("cannot get address of foo in global scope: %s\n", dlerror ()); 25 exit (1); 26 } 27 28 res = fp () - 42; 29 30 if (dlclose (h) != 0) 31 { 32 printf ("failure when closing h in %s: %s\n", __FILE__, dlerror ()); 33 exit (1); 34 } 35 36 return res; 37 } 38