This folder contains everything related to 3rdparty code or tools. cmake - scripts for the cmake build system (http://www.cmake.org) libconfig - library for processing structured configuration files (http://www.hyperrealm.com/libconfig/) mysql - library for MySQL Community Server (http://www.mysql.com) pcre - library for Perl Compatible Regular Expressions (http://www.pcre.org) zlib - library for DEFLATE lossless compression algorithm (http://www.zlib.net)