*NOTE*: Intel(R) SGX SDK 2.9 requires GCC 7.3 or above. The SDK installer will not be provided for below OSes because the native GCC version doesn't meet the requirement: * Ubuntu 16.04 LTS Server 64bits * Red Hat Enterprise Linux Server release 7.4 64bits * CentOS 7.5 64bits * Fedora 27 Server 64bits * SUSE Linux Enterprise Server 12 64bits