#include <dlfcn.h> #include <stdio.h> #include <stdlib.h> extern int call_me (void); int call_me (void) { void *h; int (*fp) (void); int res; h = dlopen ("reldepmod1.so", RTLD_LAZY); if (h == NULL) { printf ("cannot open reldepmod1.so in %s: %s\n", __FILE__, dlerror ()); exit (1); } fp = dlsym (h, "foo"); if (fp == NULL) { printf ("cannot get address of foo in global scope: %s\n", dlerror ()); exit (1); } res = fp () - 42; if (dlclose (h) != 0) { printf ("failure when closing h in %s: %s\n", __FILE__, dlerror ()); exit (1); } return res; }