diff -up ./src/Makefile.in.tv ./src/Makefile.in
--- ./src/Makefile.in.tv	2017-11-29 13:39:31.414076789 +0100
+++ ./src/Makefile.in	2017-11-29 13:39:32.548096204 +0100
@@ -9,8 +9,8 @@ OCAMLMAKEFILE = OCamlMakefile
 
 OCAMLFIND = @OCAMLFIND@
 OCAMLFIND_LDCONF = @OCAMLFIND_LDCONF@
-OCAMLC = @OCAMLC@
-OCAMLOPT = @OCAMLOPT@
+OCAMLC = @OCAMLC@ -g
+OCAMLOPT = @OCAMLOPT@ -g
 OCAMLBEST = @OCAMLBEST@
 OCAMLMKTOP = @OCAMLMKTOP@
 OCAMLMKLIB = @OCAMLMKLIB@