+AC_CHECK_HEADERS([clockd/libtime.h], have_libtime=true, have_libtime=false)
+
+if test "x$have_libtime" == "xtrue"; then
+ AC_DEFINE_UNQUOTED(MODEST_USE_LIBTIME, 1, ["use libtime API"])
+ MODEST_LIBTIME_LIBS=-ltime
+else
+ MODEST_LIBTIME_LIBS=
+fi
+AC_SUBST(MODEST_LIBTIME_LIBS)