1: libdl {
    2:   GLIBC_2.0 {
    3:     dladdr; dlclose; dlerror; dlopen; dlsym;
    4:   }
    5:   GLIBC_2.1 {
    6:     dlopen; dlvsym;
    7:   }
    8:   GLIBC_2.3.3 {
    9:     dladdr1; dlinfo;
   10:   }
   11:   GLIBC_2.3.4 {
   12:     dlmopen;
   13:   }
   14:   GLIBC_PRIVATE {
   15:     _dlfcn_hook;
   16:   }
   17: }