diff --git a/bin/dune b/bin/dune
index ec316546..d5c72b2b 100644
--- a/bin/dune
+++ b/bin/dune
@@ -3,5 +3,5 @@
  (public_name ODiffBin)
  (package odiff)
  (flags
-  (:standard -w -27 -cc gcc))
+  (:standard -w -27))
  (libraries odiff-core odiff-io cmdliner))
diff --git a/io/config/discover.ml b/io/config/discover.ml
index caf3232e..e5745ef8 100644
--- a/io/config/discover.ml
+++ b/io/config/discover.ml
@@ -104,9 +104,10 @@ let get_flags_from_env_or_run_pkg_conifg c ~env ~lib =
 let c_flags_to_ocaml_opt_flags flags =
   flags
   |> List.filter_map (function
-       | opt when String.starts_with opt ~prefix:"-l" -> Some [ "-cclib"; opt ]
-       | _ -> None)
-  |> List.flatten
+       | opt when String.starts_with opt ~prefix:"-l" ->
+           let flag = String.sub opt 2 (String.length opt - 2) in
+           Some [ "-cclib"; "-l:" ^ flag ^ ".a" ]
+       | opt -> Some [ "-ccopt"; opt ]) |> List.flatten
 
 let () =
   C.main ~name:"odiff-c-lib-packae-resolver" (fun c ->