AC_CHECK_OCAML_PKG(gettext)
AC_CHECK_OCAML_PKG(xml-light)
AC_CHECK_OCAML_PKG(csv)
+AC_CHECK_OCAML_PKG(calendar)
AC_SUBST(pkg_lablgtk2)
AC_SUBST(pkg_curses)
AC_SUBST(pkg_gettext)
AC_SUBST(pkg_xml_light)
AC_SUBST(pkg_csv)
+AC_SUBST(pkg_calendar)
dnl Check for optional perldoc (for building manual pages).
AC_CHECK_PROG(HAVE_PERLDOC,perldoc,perldoc)