= Installation Guide = In this section we detail how to start using LEMON, from downloading it to your computer, through the steps of installation, to showing how to compile programs that use LEMON. We assume that you have a basic knowledge of your operating system and C++ programming language. The procedure is pretty straightforward, but if you have any difficulties do not hesitate to [mailto:lemon-user@lemon.cs.elte.hu ask]. In fact, LEMON provides two different build environments, one is based on [http://en.wikipedia.org/wiki/GNU_build_system autotool] while the other is based on [http://cmake.org cmake]. Your choice will mainly depend on the operation system you use - choose the autotool based one on Linux and other Unices, while use the cmake based one on M$ Windows.