AC_PATH_PROGS(OCAMLC, [ocamlc.opt ocamlc])
AC_PATH_PROGS(OCAMLOPT, [ocamlopt.opt ocamlopt])
AC_PATH_PROGS(OCAMLDEP, [ocamldep.opt ocamldep])
+AC_PATH_PROGS(OCAMLDOC, [ocamldoc.opt ocamldoc])
dnl Determine if the linker supports the -R option.
AC_LINK_USE_R