kmels@kmels-stelle:~/code/ocaml/proglangUtils$ make
ocamlbuild -j 2 proglangUtils.cma
Finished, 0 targets (0 cached) in 00:00:00.
+ ocamlfind ocamlc -c -o extSMap.cmo extSMap.ml
File "extSMap.ml", line 1, characters 0-1:
Error: The implementation extSMap.ml
       does not match the interface extSMap.cmi:
       Module type declarations do not match:
         module type S =
           sig
             type key
             type +'a t
             val empty : 'a t
             val is_empty : 'a t -> bool
             val add : key -> 'a -> 'a t -> 'a t
             val find : key -> 'a t -> 'a
             val remove : key -> 'a t -> 'a t
             val mem : key -> 'a t -> bool
             val iter : (key -> 'a -> unit) -> 'a t -> unit
             val map : ('a -> 'b) -> 'a t -> 'b t
             val mapi : (key -> 'a -> 'b) -> 'a t -> 'b t
             val fold : (key -> 'a -> 'b -> 'b) -> 'a t -> 'b -> 'b
             val compare : ('a -> 'a -> int) -> 'a t -> 'a t -> int
             val equal : ('a -> 'a -> bool) -> 'a t -> 'a t -> bool
             val string_of : ('a -> string) -> 'a t -> string
           end
       does not match
         module type S =
           sig
             type key
             type +'a t
             val empty : 'a t
             val is_empty : 'a t -> bool
             val mem : key -> 'a t -> bool
             val add : key -> 'a -> 'a t -> 'a t
             val singleton : key -> 'a -> 'a t
             val remove : key -> 'a t -> 'a t
             val merge :
               (key -> 'a option -> 'b option -> 'c option) ->
               'a t -> 'b t -> 'c t
             val compare : ('a -> 'a -> int) -> 'a t -> 'a t -> int
             val equal : ('a -> 'a -> bool) -> 'a t -> 'a t -> bool
             val iter : (key -> 'a -> unit) -> 'a t -> unit
             val fold : (key -> 'a -> 'b -> 'b) -> 'a t -> 'b -> 'b
             val for_all : (key -> 'a -> bool) -> 'a t -> bool
             val exists : (key -> 'a -> bool) -> 'a t -> bool
             val filter : (key -> 'a -> bool) -> 'a t -> 'a t
             val partition : (key -> 'a -> bool) -> 'a t -> 'a t * 'a t
             val cardinal : 'a t -> int
             val bindings : 'a t -> (key * 'a) list
             val min_binding : 'a t -> key * 'a
             val max_binding : 'a t -> key * 'a
             val choose : 'a t -> key * 'a
             val split : key -> 'a t -> 'a t * 'a option * 'a t
             val find : key -> 'a t -> 'a
             val map : ('a -> 'b) -> 'a t -> 'b t
             val mapi : (key -> 'a -> 'b) -> 'a t -> 'b t
             val string_of : ('a -> string) -> 'a t -> string
           end
       Modules do not match:
         sig
           type key
           type +'a t
           val empty : 'a t
           val is_empty : 'a t -> bool
           val add : key -> 'a -> 'a t -> 'a t
           val find : key -> 'a t -> 'a
           val remove : key -> 'a t -> 'a t
           val mem : key -> 'a t -> bool
           val iter : (key -> 'a -> unit) -> 'a t -> unit
           val map : ('a -> 'b) -> 'a t -> 'b t
           val mapi : (key -> 'a -> 'b) -> 'a t -> 'b t
           val fold : (key -> 'a -> 'b -> 'b) -> 'a t -> 'b -> 'b
           val compare : ('a -> 'a -> int) -> 'a t -> 'a t -> int
           val equal : ('a -> 'a -> bool) -> 'a t -> 'a t -> bool
           val string_of : ('a -> string) -> 'a t -> string
         end
       is not included in
         sig
           type key
           type +'a t
           val empty : 'a t
           val is_empty : 'a t -> bool
           val mem : key -> 'a t -> bool
           val add : key -> 'a -> 'a t -> 'a t
           val singleton : key -> 'a -> 'a t
           val remove : key -> 'a t -> 'a t
           val merge :
             (key -> 'a option -> 'b option -> 'c option) ->
             'a t -> 'b t -> 'c t
           val compare : ('a -> 'a -> int) -> 'a t -> 'a t -> int
           val equal : ('a -> 'a -> bool) -> 'a t -> 'a t -> bool
           val iter : (key -> 'a -> unit) -> 'a t -> unit
           val fold : (key -> 'a -> 'b -> 'b) -> 'a t -> 'b -> 'b
           val for_all : (key -> 'a -> bool) -> 'a t -> bool
           val exists : (key -> 'a -> bool) -> 'a t -> bool
           val filter : (key -> 'a -> bool) -> 'a t -> 'a t
           val partition : (key -> 'a -> bool) -> 'a t -> 'a t * 'a t
           val cardinal : 'a t -> int
           val bindings : 'a t -> (key * 'a) list
           val min_binding : 'a t -> key * 'a
           val max_binding : 'a t -> key * 'a
           val choose : 'a t -> key * 'a
           val split : key -> 'a t -> 'a t * 'a option * 'a t
           val find : key -> 'a t -> 'a
           val map : ('a -> 'b) -> 'a t -> 'b t
           val mapi : (key -> 'a -> 'b) -> 'a t -> 'b t
           val string_of : ('a -> string) -> 'a t -> string
         end
       The field `split' is required but not provided
       The field `choose' is required but not provided
       The field `max_binding' is required but not provided
       The field `min_binding' is required but not provided
       The field `bindings' is required but not provided
       The field `cardinal' is required but not provided
       The field `partition' is required but not provided
       The field `filter' is required but not provided
       The field `exists' is required but not provided
       The field `for_all' is required but not provided
       The field `merge' is required but not provided
       The field `singleton' is required but not provided
Command exited with code 2.
make: *** [byte] Error 10