1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
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3 | "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
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4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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5 | %general-entities;
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6 | ]>
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7 |
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8 | <chapter id="general-genlib">
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9 | <?dbhtml filename="genlib.html"?>
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10 | <title>General Libraries</title>
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11 |
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12 | <para>Libraries contain code which is often required by more than
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13 | one program. This has the advantage that each program doesn't need to
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14 | duplicate code (and risk introducing bugs), it just has to call
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15 | functions from the libraries installed on the system. The most obvious
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16 | example of a set of libraries is <application>glibc</application> which is
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17 | installed during the <acronym>LFS</acronym> book. This contains all of
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18 | the <application>C</application> library functions which programs use.</para>
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19 |
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20 | <para>There are two types of libraries: static and shared. Shared libraries
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21 | (usually <filename>libXXX.so</filename>) are loaded into memory from the shared
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22 | copy at runtime (hence the name). Static libraries (<filename>libXXX.a
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23 | </filename>) are actually linked into the program executable file itself, thus
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24 | making the program file larger. Quite often, you will find both static and
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25 | shared copies of the same library on your system.</para>
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26 |
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27 | <para>Generally, you only need to install libraries when you are
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28 | installing software that needs the functionality they supply. In
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29 | the <acronym>BLFS</acronym> book, each package is presented with a list of (known)
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30 | dependencies. Thus, you can figure out which libraries you need to have
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31 | before installing that program. If you are installing something without
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32 | using <acronym>BLFS</acronym> instructions, usually the <filename>README</filename>
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33 | or <filename>INSTALL</filename> file will contain details of the
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34 | program's requirements.</para>
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35 |
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36 | <para>There are certain libraries which nearly <emphasis>everyone</emphasis>
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37 | will need at some point. In this chapter we list these and some others and
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38 | explain why you may want to install them.</para>
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39 |
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40 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="openssl.xml"/>
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41 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="pcre.xml"/>
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42 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="popt.xml"/>
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43 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="slang.xml"/>
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44 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="fam.xml"/>
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45 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="libxml.xml"/>
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46 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="libxml2.xml"/>
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47 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="libxslt.xml"/>
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48 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="gmp.xml"/>
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49 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="gdbm.xml"/>
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50 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="glib.xml"/>
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51 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="glib2.xml"/>
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52 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="libidl.xml"/>
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53 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="libcroco.xml"/>
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54 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="libgsf.xml"/>
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55 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="libglade.xml"/>
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56 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="expat.xml"/>
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57 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="libesmtp.xml"/>
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58 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="aspell.xml"/>
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59 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="ispell.xml"/>
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60 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="guile.xml"/>
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61 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="slib.xml"/>
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62 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="gwrap.xml"/>
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63 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="lzo.xml"/>
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64 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="libpcap.xml"/>
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65 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="libusb.xml"/>
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66 |
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67 | </chapter>
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