--- ocamldep.ml.orig	Tue Mar 11 00:32:53 2008
+++ ocamldep.ml	Tue Mar 11 00:33:13 2008
@@ -26,6 +26,8 @@
 let error_occurred = ref false
 let raw_dependencies = ref false
 
+let ifiles = ref []
+
 (* Fix path to use '/' as directory separator instead of '\'.
    Only under Windows. *)
 
@@ -63,6 +65,20 @@
       | None -> find_in_path rem in
   find_in_path !load_path
 
+let rec find_interior_file name ifs =
+  let uname = String.uncapitalize name in
+  let rec loop ifs =
+    match ifs with
+      [] -> raise Not_found
+    | candidate :: rem ->
+        let bc = Filename.basename candidate in
+        if bc = name || bc = uname then
+          candidate
+        else
+          loop rem
+    in
+    loop ifs
+
 let find_dependency modname (byt_deps, opt_deps) =
   try
     let filename = find_file (modname ^ ".mli") in
@@ -80,6 +96,22 @@
       basename ^ (if !native_only then ".cmx" else ".cmo") in
     (bytename :: byt_deps, (basename ^ ".cmx") :: opt_deps)
   with Not_found ->
+  try
+    let filename = find_interior_file (modname ^ ".mli") !ifiles in
+    let basename = Filename.chop_suffix filename ".mli" in
+    let optname =
+      if Sys.file_exists (basename ^ ".ml")
+      then basename ^ ".cmx"
+      else basename ^ ".cmi" in
+    ((basename ^ ".cmi") :: byt_deps, optname :: opt_deps)
+  with Not_found ->
+  try
+    let filename = find_interior_file (modname ^ ".ml") !ifiles in
+    let basename = Filename.chop_suffix filename ".ml" in
+    let bytename =
+      basename ^ (if !native_only then ".cmx" else ".cmo") in
+    (bytename :: byt_deps, (basename ^ ".cmx") :: opt_deps)
+  with Not_found ->
     (byt_deps, opt_deps)
 
 let (depends_on, escaped_eol) = (": ", "\\\n    ")
@@ -292,5 +324,7 @@
        "  (for Windows) Use forward slash / instead of backslash \\ in file paths";
      "-version", Arg.Unit print_version,
       " Print version and exit";
+     "-interiorfile", Arg.String(fun s -> ifiles := s :: !ifiles),
+       "<file>  Emit dependency for <file> even if does not exist";
     ] file_dependencies usage;
   exit (if !error_occurred then 2 else 0)