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/* -*- mode: C++; indent-tabs-mode: nil; -*-
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*
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* This file is a part of LEMON, a generic C++ optimization library.
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kpeter@3
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*
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* Copyright (C) 2003-2008
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kpeter@3
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* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
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* (Egervary Research Group on Combinatorial Optimization, EGRES).
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*
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* Permission to use, modify and distribute this software is granted
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* provided that this copyright notice appears in all copies. For
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* precise terms see the accompanying LICENSE file.
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kpeter@3
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*
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* This software is provided "AS IS" with no warranty of any kind,
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* express or implied, and with no claim as to its suitability for any
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* purpose.
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*
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*/
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kpeter@3
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kpeter@11
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namespace lemon {
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/**
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alpar@10
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[PAGE]hello_lemon[PAGE] Compile Your First Code
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kpeter@6
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kpeter@11
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First of all you have to install LEMON on your system (see
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kpeter@11
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\ref install for instructions).
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kpeter@11
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After that you can paste the following code segment into a file
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kpeter@11
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<tt>hello_lemon.cc</tt> to have a first working program that uses LEMON.
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kpeter@6
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kpeter@6
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\dontinclude hello_lemon.cc
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\skip #include
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\until }
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kpeter@6
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kpeter@16
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In this small example a directed graph is created with two nodes and
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an arc added to it.
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kpeter@6
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kpeter@16
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Now let us compile this code.
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(We suppose that you have it in a file called <tt>hello_lemon.cc</tt>.)
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kpeter@6
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kpeter@16
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If LEMON is installed <b>system-wide</b> (into directory \c /usr/local),
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kpeter@9
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then it is very easy to compile this program with the
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kpeter@6
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following command (the argument <tt>-lemon</tt> tells the compiler
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that we are using the installed LEMON).
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kpeter@6
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\verbatim
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g++ -lemon hello_lemon.cc -o hello_lemon
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\endverbatim
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As a result you will get the exacutable \c hello_lemon in the current
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directory, which you can run by the following command.
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\verbatim
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./hello_lemon
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\endverbatim
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If LEMON is installed <b>user-local</b> into a directory
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(e.g. <tt>~/lemon</tt>) or if you just skipped the step
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<tt>make install</tt>, then compiling the code is a bit more difficult.
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You have to issue a command like this.
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\verbatim
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g++ -lemon -I ~/lemon -L ~/lemon/lemon/.libs hello_lemon.cc -o hello_lemon
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\endverbatim
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kpeter@6
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If everything has gone well, then our program prints out the followings.
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\verbatim
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kpeter@16
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Hello World! This is LEMON library here.
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We have a directed graph with 2 nodes and 1 arc.
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\endverbatim
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If you managed to compile and run this example code without any problems,
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you may go on reading this tutorial to get to know the basic notions,
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features and tools of LEMON. However if you encountered problems that
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you did not manage to solve, do not hesitate to
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<a href="mailto:lemon-user@lemon.cs.elte.hu"><b>contact us</b></a>.
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kpeter@6
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alpar@10
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[TRAILER]
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kpeter@3
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*/
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kpeter@11
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}
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