with versions before 10.2, as they do not define there there specific symbols.
*/
-// Newer (>= 10.2) MariaDB
+/* Newer (>= 10.2) MariaDB */
#if defined MARIADB_VERSION_ID
#define EXIM_MxSQL_VERSION_ID MARIADB_VERSION_ID
-// MySQL defines MYSQL_VERSION_ID, and MariaDB does so
-// https://dev.mysql.com/doc/refman/5.7/en/c-api-server-client-versions.html
+/* MySQL defines MYSQL_VERSION_ID, and MariaDB does so */
+/* https://dev.mysql.com/doc/refman/5.7/en/c-api-server-client-versions.html */
#elif defined LIBMYSQL_VERSION_ID
#define EXIM_MxSQL_VERSION_ID LIBMYSQL_VERSION_ID
#elif defined MYSQL_VERSION_ID
#define EXIM_MYSQL_VERSION_ID 0
#endif
-// Newer (>= 10.2) MariaDB
+/* Newer (>= 10.2) MariaDB */
#ifdef MARIADB_CLIENT_VERSION_STR
#define EXIM_MxSQL_VERSION_STR MARIADB_CLIENT_VERSION_STR
-// Mysql uses MYSQL_SERVER_VERSION
+/* Mysql uses MYSQL_SERVER_VERSION */
#elif defined LIBMYSQL_VERSION
#define EXIM_MxSQL_VERSION_STR LIBMYSQL_VERSION
#elif defined MYSQL_SERVER_VERSION