there's no point creating an alias for it.
#define SSL_get_ex_data_X509_STORE_CTX_idx SSL_get_ex_d_X509_STORE_CTX_idx
#undef SSL_add_file_cert_subjects_to_stack
#define SSL_add_file_cert_subjects_to_stack SSL_add_file_cert_subjs_to_stk
+#if 0 /* This function is not defined i VMS. */
#undef SSL_add_dir_cert_subjects_to_stack
#define SSL_add_dir_cert_subjects_to_stack SSL_add_dir_cert_subjs_to_stk
+#endif
#undef SSL_CTX_use_certificate_chain_file
#define SSL_CTX_use_certificate_chain_file SSL_CTX_use_cert_chain_file
#undef SSL_CTX_set_cert_verify_callback