--- db-4.8.30/dist/config.sub	2010-04-12 14:25:23.000000000 -0600
+++ db-4.8.30.new/dist/config.sub	2020-09-30 11:33:22.746637496 -0600
@@ -303,6 +303,10 @@
 	ms1)
 		basic_machine=mt-unknown
 		;;
+	raspi4)
+		basic_machine=aarch64-unknown
+		os=-linux
+		;;
 
 	# We use `pc' rather than `unknown'
 	# because (1) that's what they normally are, and