extconf.rb in io-console-0.4.5 vs extconf.rb in io-console-0.4.6

@@ -15,9 +15,11 @@
 else
   ok = false
 end
 if ok
   have_header("sys/ioctl.h") if hdr
+  have_func("rb_funcallv")
+  have_func("rb_sym2str")
   # rb_check_hash_type: 1.9.3
   # rb_io_get_write_io: 1.9.1
   # rb_cloexec_open: 2.0.0
   $defs << "-D""ENABLE_IO_GETPASS=1"
   create_makefile("io/console") {|conf|