Selectively enable OCaml warnings

[fpottier]

trafficstars

It would be nice if we could selectively enable certain OCaml warnings (e.g., the unused-value warning) when compiling our code (solution/prelude/prepare/test).

[AltGr]

Doesn't the [@@@warning "-32"] attribute work for this purpose ?

[fpottier]

Good suggestion (thanks!) but no, the attribute appears to be ignored. (I have placed [@@@ocaml.warning "+A"] at the very beginning of test.ml.) I don't know why -- perhaps because this is OCaml 4.05?