diff --git a/Makefile b/Makefile
index 377de83..2f4836a 100644
--- a/Makefile
+++ b/Makefile
@@ -20,6 +20,10 @@ all : native-code native-code-library byte-code-library top htdoc
 clean ::
 	rm -rf doc foo foo2 out.pdf out2.pdf *.cmt *.cmti *.json
 
+DOC_FILES = cpdferror.mli cpdfjson.mli cpdfstrftime.mli cpdfcoord.mli \
+            cpdfattach.mli cpdfpagespec.mli cpdfposition.mli cpdf.mli \
+	    cpdfcommand.mli
+
 LIBINSTALL_FILES = cpdf.a cpdf.cma cpdf.cmxa \
 $(foreach x,$(MODS),$x.mli) $(foreach x,$(MODS),$x.cmi) \
 $(foreach x,$(MODS),$x.cmx) $(foreach x,$(MODS),$x.cmti)
diff --git a/cpdfjson.ml b/cpdfjson.ml
index 998d6d8..ba037af 100644
--- a/cpdfjson.ml
+++ b/cpdfjson.ml
@@ -1,7 +1,7 @@
 open Pdfutil
 open Cpdferror
 
-module J = Tjjson
+(*module J = Tjjson
 module P = Pdf
 module O = Pdfops
 
@@ -425,6 +425,9 @@ let to_output o parse_content no_stream_data decompress_streams pdf =
     J.format formatter (json_of_pdf parse_content no_stream_data decompress_streams pdf);
     Format.pp_print_flush formatter ();
     o.Pdfio.output_string (Buffer.contents b)
+*)
+
+let to_output _ _ _ _ _ = ()
 
 let example_pdf =
   let page =
@@ -438,5 +441,5 @@ let example_pdf =
 (* FIXME Proper streaming to output / from input, rather than making a big string first. *)
 let of_input i =
   (*pdf_of_json*)
-  ignore (J.parse (Pdfio.string_of_bytes (Pdfio.bytes_of_input i 0 (i.Pdfio.in_channel_length))));
+  (*ignore (J.parse (Pdfio.string_of_bytes (Pdfio.bytes_of_input i 0 (i.Pdfio.in_channel_length))));*)
   example_pdf