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[Caml-list] dynlink and toplevel
- James Scott
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| Date: | -- (:) |
| From: | James Scott <j.scott@r...> |
| Subject: | [Caml-list] dynlink and toplevel |
Hi All,
we're doing some work where it's useful to use Dynlink in the
toplevel, but we've run into a snag: if the Dynlink-loaded module
refers to modules loaded by '#load' or on the command line, they're
not resolved. But if they're put into a 'custom' toplevel they are, e.g.
$ cat Loader.ml
let dynload_helper_ref = ref (None: int option)
let doit fname =
let _ = Dynlink.init () in
let _ = Dynlink.loadfile fname in
!dynload_helper_ref
$ cat Loadee.ml
Loader.dynload_helper_ref := Some 1
$ cat Test.ml
let _ = Loader.doit "Loadee.cmo" ;;
$ ocamlc -c Loadee.ml
$ ocamlc -a -o llib.cma Loader.ml
$ ocaml dynlink.cma llib.cma Test.ml
Exception:
Dynlink.Error
(Dynlink.Linking_error ("Loadee.cmo", Dynlink.Undefined_global "Loader")).
But this works:
$ ocamlmktop dynlink.cma llib.cma
$ ./a.out < Test.ml
Objective Caml version 3.07+2
# - : int option = Some 1
This was a bit of a surprise as I was expecting the two load semantics
to be identical... but is there any way round it?
James
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