RTLD_TRACE
if (mode & RTLD_TRACE)
if (mode & ~(RTLD_MODEMASK | RTLD_GLOBAL | RTLD_TRACE))
~(RTLD_MODEMASK | RTLD_GLOBAL | RTLD_TRACE));
ld_tracing = (mode & RTLD_TRACE) == 0 ? NULL : "1";
dlopen(*argv, RTLD_TRACE);