4 files changed, 7 insertions, 4 deletions
diff --git a/lib/aux_file.ml b/lib/aux_file.ml
index f7bd81f85d..c814438dd7 100644
--- a/lib/aux_file.ml
+++ b/lib/aux_file.ml
@@ -25,9 +25,9 @@ let mk_absolute vfile =
   if Filename.is_relative vfile then CUnix.correct_path vfile (Sys.getcwd ())
   else vfile
 
-let start_aux_file_for vfile =
-  let vfile = mk_absolute vfile in
-  oc := Some (open_out (aux_file_name_for vfile));
+let start_aux_file ~aux_file:output_file ~v_file =
+  let vfile = mk_absolute v_file in
+  oc := Some (open_out output_file);
   Printf.fprintf (Option.get !oc) "COQAUX%d %s %s\n"
     version (Digest.to_hex (Digest.file vfile)) vfile
 
diff --git a/lib/aux_file.mli b/lib/aux_file.mli
index 127827ab6a..86e322b71d 100644
--- a/lib/aux_file.mli
+++ b/lib/aux_file.mli
@@ -17,7 +17,8 @@ module H : Map.S with type key = int * int
 module M : Map.S with type key = string
 val contents : aux_file -> string M.t H.t
 
-val start_aux_file_for : string -> unit
+val aux_file_name_for : string -> string
+val start_aux_file : aux_file:string -> v_file:string -> unit
 val stop_aux_file : unit -> unit 
 val recording : unit -> bool
 
diff --git a/lib/flags.ml b/lib/flags.ml
index c1ec9738ca..9a209a2b3e 100644
--- a/lib/flags.ml
+++ b/lib/flags.ml
@@ -47,6 +47,7 @@ let batch_mode = ref false
 
 type compilation_mode = BuildVo | BuildVio | Vio2Vo
 let compilation_mode = ref BuildVo
+let compilation_output_name = ref None
 
 let test_mode = ref false
 
diff --git a/lib/flags.mli b/lib/flags.mli
index 24780f0dcc..f52a14a303 100644
--- a/lib/flags.mli
+++ b/lib/flags.mli
@@ -14,6 +14,7 @@ val load_init : bool ref
 val batch_mode : bool ref
 type compilation_mode = BuildVo | BuildVio | Vio2Vo
 val compilation_mode : compilation_mode ref
+val compilation_output_name : string option ref
 
 val test_mode : bool ref