Merge pull request #30 from github/vmg/ssl3

[BACKPORT] openssl: Allow building without SSLV3

Author: Vicent Marti

ext/openssl/extconf.rb

@@ -103,6 +103,9 @@
 have_func("SSLv2_method")
 have_func("SSLv2_server_method")
 have_func("SSLv2_client_method")
+have_func("SSLv3_method")
+have_func("SSLv3_server_method")
+have_func("SSLv3_client_method")
 have_func("TLSv1_1_method")
 have_func("TLSv1_1_server_method")
 have_func("TLSv1_1_client_method")

ext/openssl/ossl_ssl.c

@@ -134,9 +134,12 @@ struct {
     OSSL_SSL_METHOD_ENTRY(SSLv2_server),
     OSSL_SSL_METHOD_ENTRY(SSLv2_client),
 #endif
+#if defined(HAVE_SSLV3_METHOD) && defined(HAVE_SSLV3_SERVER_METHOD) && \
+        defined(HAVE_SSLV3_CLIENT_METHOD)
     OSSL_SSL_METHOD_ENTRY(SSLv3),
     OSSL_SSL_METHOD_ENTRY(SSLv3_server),
     OSSL_SSL_METHOD_ENTRY(SSLv3_client),
+#endif
     OSSL_SSL_METHOD_ENTRY(SSLv23),
     OSSL_SSL_METHOD_ENTRY(SSLv23_server),
     OSSL_SSL_METHOD_ENTRY(SSLv23_client),