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