--- src/tls.c.orig	2019-04-02 14:00:40.000000000 +0000
+++ src/tls.c	2019-04-28 21:41:25.684814865 +0000
@@ -138,7 +138,7 @@
     SSL_CTX_ctrl(tls_ctx, SSL_CTRL_SET_ECDH_AUTO, 1, NULL);
     return 0;
 #else
-# ifndef SSL_OP_SINGLE_ECDH_USE
+# if !defined(SSL_OP_SINGLE_ECDH_USE) || !defined(EC_KEY)
     errno = ENOTSUP;
     return -1;
 # else