Fix bigarray config (ocaml#5494)

The bigarray library has already inculded in the Standard Library since
OCaml 4.07, the library has been removed in OCaml 5.00 and this fix
avoid an Error durig resolving the library by just emitting a Warning.

src/dune_rules/lib.ml

@@ -1435,14 +1435,26 @@ end = struct
             in
             (acc_res, acc_selects, acc_re_exports)
           | Direct (loc, name) ->
-            let+ lib = resolve_dep db (loc, name) ~private_deps in
-            let acc_res =
-              let open Resolve.O in
-              let+ lib = lib
-              and+ acc_res = acc_res in
-              lib :: acc_res
-            in
-            (acc_res, acc_selects, acc_re_exports)
+            let ocaml_version = db.lib_config.ocaml_version in
+            if String.equal "bigarray" (Lib_name.to_string name)
+              && not (Ocaml_version.has_bigarray_library ocaml_version)
+            then
+              begin
+                User_warning.emit ~loc
+                  [ Pp.textf
+                      "Already in the Standard Library of OCaml %s"
+                      db.lib_config.ocaml_version_string
+                  ];
+                Memo.Build.return (acc_res, acc_selects, acc_re_exports)
+              end
+            else
+              let+ lib = resolve_dep db (loc, name) ~private_deps in
+              let acc_res =
+                let open Resolve.O in
+                let+ lib = lib
+                and+ acc_res = acc_res in
+                lib :: acc_res
+              in (acc_res, acc_selects, acc_re_exports)
           | Select select ->
             let+ res, resolved_select = resolve_select select in
             let acc_res =