Blame SOURCES/httpd-2.4.6-ssl-ecdh-auto.patch

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diff --git a/modules/ssl/ssl_engine_init.c b/modules/ssl/ssl_engine_init.c
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index 0275452..8efdcd7 100644
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--- a/modules/ssl/ssl_engine_init.c
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+++ b/modules/ssl/ssl_engine_init.c
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@@ -1144,11 +1144,16 @@ static void ssl_init_server_certs(server_rec *s,
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                      OBJ_nid2sn(nid), vhost_id, mctx->pks->cert_files[0]);
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     }
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     /*
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-     * ...otherwise, configure NIST P-256 (required to enable ECDHE)
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+     * ...otherwise, enable auto curve selection (OpenSSL 1.0.2 and later)
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+     * or configure NIST P-256 (required to enable ECDHE for earlier versions)
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      */
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     else {
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+#if defined(SSL_CTX_set_ecdh_auto)
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+        SSL_CTX_set_ecdh_auto(mctx->ssl_ctx, 1);
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+#else
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         SSL_CTX_set_tmp_ecdh(mctx->ssl_ctx,
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                              EC_KEY_new_by_curve_name(NID_X9_62_prime256v1));
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+#endif
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     }
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 #endif
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 }