diff --git a/ChangeLog b/ChangeLog
index efb4fe30fd..a1b3cc83b0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Sat Dec 14 01:51:29 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
+
+	* ext/dbm/extconf.rb (rb_check): support for GNU dbm 1.8.3.
+	  (-with-dbm-type=gdbm_compat). link against -lgdbm_compat
+	  and -lgdbm.
+
 Fri Dec 13 23:42:16 2002  WATANABE Hirofumi  <eban@ruby-lang.org>
 
 	* ext/dbm/extconf.rb (db_check): check existence of the function
diff --git a/ext/dbm/extconf.rb b/ext/dbm/extconf.rb
index b9ab4d1048..e67ede88f5 100644
--- a/ext/dbm/extconf.rb
+++ b/ext/dbm/extconf.rb
@@ -10,6 +10,7 @@ $dbm_conf_headers = {
   "db2" => ["db2/db.h", "db2.h", "db.h"],
   "dbm" => ["ndbm.h"],
   "gdbm" => ["gdbm-ndbm.h", "ndbm.h"],
+  "gdbm_compat" => ["gdbm-ndbm.h", "ndbm.h"],
 }
 
 def db_check(db)
@@ -23,6 +24,9 @@ def db_check(db)
     hsearch = "-DDB_DBM_HSEARCH "
   when "gdbm"
     $dbm_conf_have_gdbm = true
+  when "gdbm_compat"
+    $dbm_conf_have_gdbm = true
+    have_library("gdbm") or return false
   end
 
   if have_library(db, db_prefix("dbm_open")) || have_func(db_prefix("dbm_open"))