This is the source code of the GPDL (Genetic Programming Problem Definition Language) syntax analyser and compiler. Further information can be found on the website: http://dev.heuristiclab.com/GPDL and in the paper: G. K. Kronberger, M. Kommenda, S. Wagner, H. Dobler - GPDL: A Framework-Independent Problem Definition Language for Grammar Guided Genetic Programming, GECCO'13 Companion, Amsterdam, Netherlands, 2013, pp. 1333-1340 The subversion repository with all sources is http://dev.heuristiclab.com/svn/hl/core/branches/HeuristicLab.Problems.GPDL and can be checked out using the username 'anonyomous' and an empty password. For instructions on building the compiler read 'BUILDING' The GPDL compiler is released under the terms of the GNU GENERAL PUBLIC LICENSE Version 3 (GPL3). See the document COPYING for details Oct. 2013, Gabriel Kronberger