diff -up nss/lib/softoken/Makefile.dbm nss/lib/softoken/Makefile
diff -up nss/lib/softoken/manifest.mn.dbm nss/lib/softoken/manifest.mn
--- nss/lib/softoken/manifest.mn.dbm	2020-08-13 11:03:53.511561201 +0200
+++ nss/lib/softoken/manifest.mn	2020-08-13 11:05:17.148194158 +0200
@@ -5,7 +5,9 @@
 CORE_DEPTH = ../..
 
 MODULE = nss
+ifndef NSS_DISABLE_DBM
 DIRS = legacydb
+endif
 
 LIBRARY_NAME = softokn
 LIBRARY_VERSION = 3