--- ext/openssl/ossl_x509ext.c.orig	2011-03-24 16:29:21.000000000 +0900
+++ ext/openssl/ossl_x509ext.c	2020-12-31 08:32:29.000000000 +0900
@@ -222,7 +222,7 @@
     VALUE rconf;
     CONF *conf;
 #else
-    static LHASH *empty_lhash;
+    static _LHASH *empty_lhash;
 #endif
 
     rb_scan_args(argc, argv, "21", &oid, &value, &critical);