MySQL Source-Configuration Options That command configures the distribution to use the installed OpenSSL library. Alternatively  to explicitly specify the path name to the OpenSSL installation  use the following syntax. This can be useful if you have multiple versions of OpenSSL installed  to prevent  CMake  from choosing the wrong one: cmake . -DWITH_SSL= path_name 3. Compile and install the distribution. To check whether a  mysqld  server supports encrypted connections  examine the value of the  have_ssl system variable: mysql>  SHOW VARIABLES LIKE ’have_ssl’; +---------------+-------+ | Variable_name | Value | +---------------+-------+ | have_ssl | YES | +---------------+-------+ If the value is  YES   the server supports encrypted connections. If the value is  DISABLED   the server is capable of supporting encrypted connections but was not started with the appropriate  --ssl- xxx  options to enable encrypted connections to be used; see Section 6.3.1  “Configuring MySQL to Use Encrypted Connections” . The  CMake  program provides a great deal of control over how you configure a MySQL source distribution. Typically  you do this using options on the  CMake  command line. For information about options supported by  CMake   run either of these commands in the top-level source directory: cmake . -LH ccmake . 2.9.7 MySQL Source-Configuration Options You can also affect  CMake  using certain environment variables. See Section 4.9  “Environment Variables” . For boolean options  the value may be specified as 1 or  ON  to enable the option  or as 0 or  OFF  to disable the option. Many options configure compile-time defaults that can be overridden at server startup. For example  the CMAKE_INSTALL_PREFIX    MYSQL_TCP_PORT   and  MYSQL_UNIX_ADDR  options that configure the default installation base directory location  TCP/IP port number  and Unix socket file can be changed at server startup with the  --basedir    --port   and  --socket  options for  mysqld . Where applicable  configuration option descriptions indicate the corresponding  mysqld  startup option. The following sections provide more information about  CMake  options. •CMake Option Reference •General Options •Installation Layout Options •Storage Engine Options •Feature Options •Compiler Flags •CMake Options for Compiling NDB Cluster 215