Link (brzo.Brzo_b0

val exe : 
  ?post_exec:(B0_zero.Op.t -> unit) ->
  ?k:(B0_zero.Op.t -> int -> unit) ->
  ?args:B0_std.Cmd.t ->
  B0_memo.t ->
  objs:B0_std.Fpath.t list ->
  o:B0_std.Fpath.t ->
  unit

exe m ~args ~objs ~o links the objects objs into executable o.