[3] | 1 | /* -*- mode: C++; indent-tabs-mode: nil; -*- |
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| 2 | * |
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| 3 | * This file is a part of LEMON, a generic C++ optimization library. |
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| 4 | * |
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| 5 | * Copyright (C) 2003-2008 |
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| 6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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| 7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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| 8 | * |
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| 9 | * Permission to use, modify and distribute this software is granted |
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| 10 | * provided that this copyright notice appears in all copies. For |
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| 11 | * precise terms see the accompanying LICENSE file. |
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| 12 | * |
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| 13 | * This software is provided "AS IS" with no warranty of any kind, |
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| 14 | * express or implied, and with no claim as to its suitability for any |
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| 15 | * purpose. |
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| 16 | * |
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| 17 | */ |
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| 18 | |
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[11] | 19 | namespace lemon { |
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[3] | 20 | /** |
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[10] | 21 | [PAGE]hello_lemon[PAGE] Compile Your First Code |
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[6] | 22 | |
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[11] | 23 | First of all you have to install LEMON on your system (see |
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| 24 | \ref install for instructions). |
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| 25 | After that you can paste the following code segment into a file |
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| 26 | <tt>hello_lemon.cc</tt> to have a first working program that uses LEMON. |
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[6] | 27 | |
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| 28 | \dontinclude hello_lemon.cc |
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| 29 | \skip #include |
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| 30 | \until } |
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| 31 | |
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[16] | 32 | In this small example a directed graph is created with two nodes and |
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| 33 | an arc added to it. |
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[6] | 34 | |
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[16] | 35 | Now let us compile this code. |
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| 36 | (We suppose that you have it in a file called <tt>hello_lemon.cc</tt>.) |
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[6] | 37 | |
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[16] | 38 | If LEMON is installed <b>system-wide</b> (into directory \c /usr/local), |
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[9] | 39 | then it is very easy to compile this program with the |
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[6] | 40 | following command (the argument <tt>-lemon</tt> tells the compiler |
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[16] | 41 | that we are using the installed LEMON). |
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[6] | 42 | |
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| 43 | \verbatim |
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[9] | 44 | g++ -lemon hello_lemon.cc -o hello_lemon |
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[6] | 45 | \endverbatim |
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| 46 | |
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| 47 | As a result you will get the exacutable \c hello_lemon in the current |
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| 48 | directory, which you can run by the following command. |
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| 49 | |
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| 50 | \verbatim |
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| 51 | ./hello_lemon |
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| 52 | \endverbatim |
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| 53 | |
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[16] | 54 | If LEMON is installed <b>user-local</b> into a directory |
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| 55 | (e.g. <tt>~/lemon</tt>) or if you just skipped the step |
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| 56 | <tt>make install</tt>, then compiling the code is a bit more difficult. |
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[6] | 57 | You have to issue a command like this. |
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| 58 | |
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| 59 | \verbatim |
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[9] | 60 | g++ -lemon -I ~/lemon -L ~/lemon/lemon/.libs hello_lemon.cc -o hello_lemon |
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[6] | 61 | \endverbatim |
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| 62 | |
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| 63 | If everything has gone well, then our program prints out the followings. |
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| 64 | |
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| 65 | \verbatim |
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[16] | 66 | Hello World! This is LEMON library here. |
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| 67 | We have a directed graph with 2 nodes and 1 arc. |
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[6] | 68 | \endverbatim |
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| 69 | |
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| 70 | If you managed to compile and run this example code without any problems, |
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[16] | 71 | you may go on reading this tutorial to get to know the basic notions, |
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| 72 | features and tools of LEMON. However if you encountered problems that |
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| 73 | you did not manage to solve, do not hesitate to |
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[6] | 74 | <a href="mailto:lemon-user@lemon.cs.elte.hu"><b>contact us</b></a>. |
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| 75 | |
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[10] | 76 | [TRAILER] |
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[3] | 77 | */ |
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[11] | 78 | } |
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