Latest update.

apps/kdf.c

@@ -1,7 +1,7 @@
 /*
  * Copyright 2019-2020 The OpenSSL Project Authors. All Rights Reserved.
  *
- * Licensed under the OpenSSL license (the "License").  You may not use
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
  * in the file LICENSE in the source distribution or at
  * https://www.openssl.org/source/license.html
@@ -17,6 +17,8 @@
 #include <openssl/kdf.h>
 #include <openssl/params.h>
 
+DEFINE_STACK_OF_STRING()
+
 typedef enum OPTION_choice {
     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
     OPT_KDFOPT, OPT_BIN, OPT_KEYLEN, OPT_OUT,