Ocamlbuild_executor
type error =
| Subcommand_failed
| Subcommand_got_signal
| Io_error
| Exceptionl_condition
val execute : ?max_jobs:int -> ?ticker:(unit -> unit) -> ?period:float -> ?display:((out_channel -> unit) -> unit) -> exit:(error -> unit) -> (unit -> string) list list -> (bool list * exn) option