I'm compiling a simple program (Ocaml 3.11.0, MSVC version):
ocamlopt -cclib "/MT /link /SUBSYSTEM:WINDOWS" -o birthday.exe birthday.ml

The output is:
** Fatal error: Cannot find file "/MT"
File "caml_startup", line 1, characters 0-1:
Error: Error during linking

How to use the -cclib option correctly?