AC_PATH_PROG(ZIP,[zip],[echo "Skipped: zip not found"])
AC_PATH_PROG(OCAMLC,[ocamlc],[echo "Skipped: ocamlc not found"])
AC_PATH_PROG(OCAMLOPT,[ocamlopt],[echo "Skipped: ocamlopt not found"])
+AC_PATH_PROG(OCAMLDEP,[ocamldep],[echo "Skipped: ocamldep not found"])
dnl Determine if the linker supports the -R option.
AC_LINK_USE_R