athos@1173: /** athos@1173: \page getstart How to start using LEMON athos@1173: klao@1519: In this page we detail how to start using LEMON, from downloading it to klao@1519: your computer, through the steps of installation, to showing a simple klao@1519: "Hello World" type program that already uses LEMON. We assume that you klao@1519: have a basic knowledge of your operating system and \c C++ programming klao@1519: language. The procedure is pretty straightforward, but if you have any klao@1519: difficulties don't hesitate to klao@1519: ask. athos@1175: athos@1514: \section requirementsLEMON Hardware and software requirements athos@1175: klao@1519: In LEMON we use C++ templates heavily, thus compilation takes a klao@1519: considerable amount of time and memory. So some decent box would be klao@1519: advantageous. But otherwise there are no special hardware requirements. athos@1514: klao@1519: You will need a recent C++ compiler. Our primary target is the GNU C++ klao@1519: Compiler (g++), from version 3.3 upwards. We also checked the Intel C klao@1519: compiler (icc). Microsoft Visual C++ .NET version was also reported to klao@1519: work (but not the earlier versions). If you want to develop with LEMON klao@1519: under Windows you could consider using Cygwin. athos@1514: athos@1514: klao@1519: In this description we will suppose a linux environment and GNU C Compiler. athos@1175: athos@1173: \section downloadLEMON How to download LEMON athos@1173: athos@1511: You can download LEMON from the LEMON web site: klao@1519: http://lemon.cs.elte.hu/dowload.html. klao@1519: There you will find released versions in form of .tar.gz files. klao@1519: If you want a developer version (for example you want to contribute in klao@1519: developing the library LEMON) then you might want to use our Subversion klao@1519: repository. This case is not detailed here, so from now on we suppose that klao@1519: you downloaded a tar.gz file. athos@1514: athos@1175: athos@1173: athos@1173: \section installLEMON How to install LEMON athos@1173: athos@1173: In order to install LEMON you have to do the following athos@1173: klao@1519: Download the tarball (named lemon-x.y.z.tar.gz where \c x,\c y klao@1519: and \c z are numbers indicating the version of the library: in our example klao@1519: we will have lemon-0.3.1.tar.gz) and issue the following klao@1519: commands: athos@1511: klao@1519: \verbatim athos@1511: tar xvzf lemon-0.3.1.tar.gz athos@1511: cd lemon-0.3.1 athos@1511: ./configure athos@1511: make klao@1519: make check #(This is optional, but recomended. It runs a bunch of tests.) athos@1511: make install klao@1519: \endverbatim athos@1511: klao@1519: These commands install LEMON under \c /usr/local (you will klao@1519: need root privileges to be able to install to that klao@1519: directory). If you want to install it to some other place, then klao@1519: pass the \c --prefix=DIR flag to \c ./configure. In what follows klao@1519: we will assume that you were able to install to directory klao@1519: \c /usr/local, otherwise some extra care is to be taken to use the klao@1519: library. athos@1511: athos@1514: We briefly explain these commands below. athos@1514: klao@1519: \verbatim athos@1514: tar xvzf lemon-0.3.1.tar.gz klao@1519: \endverbatim klao@1519: This command untars the tar.gz file into a directory named klao@1519: lemon-0.3.1. athos@1514: klao@1519: \verbatim athos@1514: cd lemon-0.3.1 klao@1519: \endverbatim athos@1514: Enters the directory. athos@1514: klao@1519: \verbatim athos@1514: ./configure klao@1519: \endverbatim athos@1514: Does some configuration (creates makefiles etc). klao@1519: \todo Explain the most important switches here (gui, doc, glpk, cplex). athos@1514: klao@1519: \verbatim athos@1514: make klao@1519: \endverbatim klao@1519: This command compiles the non-template part of LEMON into klao@1519: libemon.a file. It also compiles some benchmark and demo klao@1519: programs. athos@1514: klao@1519: \verbatim klao@1519: make check klao@1519: \endverbatim klao@1519: This is an optional step: it runs the test programs that we klao@1519: developed for LEMON to check whether the library works properly on klao@1519: your platform. athos@1514: klao@1519: \verbatim athos@1514: make install klao@1519: \endverbatim athos@1514: This will copy the directory structure to its final destination (e.g. to \c klao@1519: /usr/local) so that your system can access it. This command should klao@1519: be issued as "root", unless you provided a \c --prefix switch to klao@1519: the \c cofugure to install the library in non-default location. athos@1175: athos@1173: \section helloworld My first program using LEMON athos@1173: klao@1519: If you have installed LEMON on your system you can paste the klao@1520: following code segment into a file (you can find it as \c klao@1520: demo/hello_lemon.cc in the LEMON package) to have a first working klao@1520: program that uses library LEMON. athos@1173: klao@1520: \include hello_lemon.cc athos@1175: athos@1514: First let us briefly explain how this program works. athos@1175: athos@1175: ListGraph is one of LEMON's graph classes. It is based on linked lists, athos@1175: therefore iterating throuh its edges and nodes is fast. athos@1175: athos@1175: After some convenient typedefs we create a graph and add three nodes to it. athos@1175: Then we add edges to it to form a complete graph. athos@1175: athos@1175: Then we iterate through all nodes of the graph. We use a constructor of the athos@1175: node iterator to initialize it to the first node. The operator++ is used to athos@1175: step to the next node. Using operator++ on the iterator pointing to the last athos@1175: node invalidates the iterator i.e. sets its value to athos@1175: \ref lemon::INVALID "INVALID". This is what we exploit in the stop condition. athos@1175: athos@1175: We can also iterate through all edges of the graph very similarly. The athos@1175: \c target and athos@1175: \c source member functions can be used to access the endpoints of an edge. athos@1175: klao@1520: If your installation of LEMON into directory \c /usr/local was klao@1520: successful then it is very easy to compile this program with the klao@1520: following command (the argument -lemon tells the compiler klao@1520: that we are using the installed library LEMON): athos@1514: klao@1519: \verbatim klao@1519: g++ hello_lemon.cc -o hello_lemon -lemon klao@1519: \endverbatim klao@1519: klao@1519: As a result you will get the exacutable \c hello_lemon in athos@1514: this directory that you can run by the command klao@1519: \verbatim klao@1519: ./hello_lemon klao@1519: \endverbatim athos@1514: athos@1514: klao@1519: If everything has gone well then the previous code fragment prints klao@1519: out the following: athos@1175: klao@1519: \verbatim athos@1175: Nodes: 2 1 0 athos@1175: athos@1175: Edges: (0,2) (1,2) (0,1) (2,1) (1,0) (2,0) klao@1519: \endverbatim athos@1175: athos@1514: Congratulations! athos@1175: klao@1519: If you want to see more features, go to the klao@1519: \ref quicktour "Quick Tour to LEMON", klao@1519: if you want to see see some demo programs then go to our athos@1175: \ref demoprograms "Demo Programs" page! athos@1175: athos@1175: athos@1175: */