tools-for-build/os-provides-dladdr-test.c

   1 /* test to build and run so that we know if we have dladdr
   2  */
   3
   4 /* bloody FSF dlcfn.h won't give us dladdr without this */
   5 #define _GNU_SOURCE
   6
   7 #include <stdlib.h>
   8 #include <dlfcn.h>
   9
  10 int main ()
  11 {
  12 #ifdef __NetBSD__
  13   /* dladdr(3) is broken on NetBSD currently, don't forget to replace
  14      with a version check when they fix it */
  15   return 1;
  16 #else
  17    void * handle = dlopen((void*)0, RTLD_GLOBAL | RTLD_NOW);
  18    void * addr = dlsym(handle, "printf");
  19    Dl_info * info = (Dl_info*) malloc(sizeof(Dl_info));
  20    if (dladdr(addr, info) == 0) {
  21        return 1;
  22    } else {
  23        return 104;
  24    }
  25 #endif
  26 }