--- old_qt/config.tests/unix/openssl11/openssl.cpp	2018-09-13 13:25:10.000000000 +0900
+++ old_qt/config.tests/unix/openssl11/openssl.cpp	2018-10-20 08:31:20.497180387 +0900
@@ -39,7 +39,7 @@ 
 
 #include <openssl/opensslv.h>
 
-#if !defined(OPENSSL_VERSION_NUMBER) || OPENSSL_VERSION_NUMBER-0 < 0x10100000L
+#if !defined(OPENSSL_VERSION_NUMBER) || OPENSSL_VERSION_NUMBER-0 < 0x10100000L  || defined(LIBRESSL_VERSION_NUMBER)
 #  error "OpenSSL >= 1.1 is required"
 #endif
 
--- old_qt/src/network/ssl/qsslcontext_openssl.cpp	2018-09-13 13:25:10.000000000 +0900
+++ old_qt/src/network/ssl/qsslcontext_openssl.cpp	2018-10-20 08:34:24.613169930 +0900
@@ -248,7 +248,7 @@ void QSslContext::applyBackendConfig(QSs
     if (sslContext->sslConfiguration.backendConfiguration().isEmpty())
         return;
 
-#if OPENSSL_VERSION_NUMBER >= 0x10002000L
+#if OPENSSL_VERSION_NUMBER >= 0x10002000L && !defined(LIBRESSL_VERSION_NUMBER)
     if (QSslSocket::sslLibraryVersionNumber() >= 0x10002000L) {
         QSharedPointer<SSL_CONF_CTX> cctx(q_SSL_CONF_CTX_new(), &q_SSL_CONF_CTX_free);
         if (cctx) {
--- old_qt/src/network/ssl/qsslsocket_openssl_symbols.cpp	2018-09-13 13:25:10.000000000 +0900
+++ old_qt/src/network/ssl/qsslsocket_openssl_symbols.cpp	2018-10-20 08:37:48.682266708 +0900
@@ -406,7 +406,7 @@ DEFINEFUNC2(int, SSL_CTX_use_PrivateKey,
 DEFINEFUNC2(int, SSL_CTX_use_RSAPrivateKey, SSL_CTX *a, a, RSA *b, b, return -1, return)
 DEFINEFUNC3(int, SSL_CTX_use_PrivateKey_file, SSL_CTX *a, a, const char *b, b, int c, c, return -1, return)
 DEFINEFUNC(X509_STORE *, SSL_CTX_get_cert_store, const SSL_CTX *a, a, return 0, return)
-#if OPENSSL_VERSION_NUMBER >= 0x10002000L
+#if OPENSSL_VERSION_NUMBER >= 0x10002000L && !defined(LIBRESSL_VERSION_NUMBER)
 DEFINEFUNC(SSL_CONF_CTX *, SSL_CONF_CTX_new, DUMMYARG, DUMMYARG, return 0, return);
 DEFINEFUNC(void, SSL_CONF_CTX_free, SSL_CONF_CTX *a, a, return ,return);
 DEFINEFUNC2(void, SSL_CONF_CTX_set_ssl_ctx, SSL_CONF_CTX *a, a, SSL_CTX *b, b, return, return);
--- old_qt/src/network/ssl/qsslsocket_openssl_symbols_p.h	2018-09-13 13:25:10.000000000 +0900
+++ old_qt/src/network/ssl/qsslsocket_openssl_symbols_p.h	2018-10-20 08:39:53.219936039 +0900
@@ -356,7 +356,7 @@ int q_SSL_CTX_use_PrivateKey(SSL_CTX *a,
 int q_SSL_CTX_use_RSAPrivateKey(SSL_CTX *a, RSA *b);
 int q_SSL_CTX_use_PrivateKey_file(SSL_CTX *a, const char *b, int c);
 X509_STORE *q_SSL_CTX_get_cert_store(const SSL_CTX *a);
-#if OPENSSL_VERSION_NUMBER >= 0x10002000L
+#if OPENSSL_VERSION_NUMBER >= 0x10002000L && !defined(LIBRESSL_VERSION_NUMBER)
 SSL_CONF_CTX *q_SSL_CONF_CTX_new();
 void q_SSL_CONF_CTX_free(SSL_CONF_CTX *a);
 void q_SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX *a, SSL_CTX *b);