flag [ "ocaml"; "compile"; "debug" ] (S[ A"-g"; A"-ppopt"; A"-DDEBUG"]);
flag [ "ocaml"; "link"; "debug" ] (A"-g");
flag [ "ocaml"; "compile"; "profile"] (S[A"-ppopt"; A"-DPROFILE"]);
flag [ "ocaml"; "compile"; "debug" ] (S[ A"-g"; A"-ppopt"; A"-DDEBUG"]);
flag [ "ocaml"; "link"; "debug" ] (A"-g");
flag [ "ocaml"; "compile"; "profile"] (S[A"-ppopt"; A"-DPROFILE"]);