1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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3 | "http://www.oasis-open.org/docbook/xml/4.5/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 | <sect1 id="ch-system-eglibc" role="wrap">
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9 | <?dbhtml filename="eglibc.html"?>
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10 |
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11 | <title>EGLIBC-&eglibc-version;</title>
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12 |
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13 | <indexterm zone="ch-system-eglibc">
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14 | <primary sortas="a-EGLIBC">EGLIBC</primary>
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15 | </indexterm>
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16 |
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17 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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18 | href="../common/eglibc.xml"
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19 | xpointer="xpointer(//*[@role='package'])"/>
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20 |
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21 | <sect2 role="installation">
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22 | <title>Installation of EGLIBC</title>
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23 |
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24 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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25 | href="../common/eglibc.xml"
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26 | xpointer="xpointer(//*[@os='z'])"/>
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27 |
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28 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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29 | href="../common/eglibc.xml"
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30 | xpointer="xpointer(//*[@os='l1'])"/>
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31 |
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32 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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33 | href="../common/eglibc.xml"
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34 | xpointer="xpointer(//*[@os='l2'])"/>
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35 |
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36 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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37 | href="../common/eglibc.xml"
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38 | xpointer="xpointer(//*[@os='l3'])"/>
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39 |
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40 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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41 | href="../common/eglibc.xml"
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42 | xpointer="xpointer(//*[@os='l4'])"/>
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43 |
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44 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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45 | href="../common/eglibc.xml"
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46 | xpointer="xpointer(//*[@os='b'])"/>
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47 |
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48 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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49 | href="../common/eglibc.xml"
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50 | xpointer="xpointer(//*[@os='e'])"/>
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51 |
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52 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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53 | href="../common/eglibc.xml"
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54 | xpointer="xpointer(//*[@os='f'])"/>
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55 |
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56 | <para os="l5">Tell EGLIBC to install its libraries into
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57 | <filename class="directory">/lib</filename>:</para>
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58 |
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59 | <screen os="l6"><userinput>echo "slibdir=/lib" >> configparms</userinput></screen>
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60 |
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61 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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62 | href="../common/eglibc.xml"
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63 | xpointer="xpointer(//*[@os='g'])"/>
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64 |
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65 | <screen os="h"><userinput>CFLAGS="-O2" \
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66 | ../eglibc-&eglibc-version;/configure --prefix=/usr \
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67 | --disable-profile --enable-kernel=2.6.32 \
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68 | --libexecdir=/usr/lib/eglibc --libdir=/usr/lib \
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69 | --enable-obsolete-rpc</userinput></screen>
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70 |
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71 | <variablelist os="i">
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72 | <title>The meaning of the new configure option:</title>
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73 |
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74 | <varlistentry>
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75 | <term><parameter>--libexecdir=/usr/lib/eglibc</parameter></term>
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76 | <listitem>
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77 | <para>This changes the location of the <command>getconf</command>
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78 | utility from its default of <filename
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79 | class="directory">/usr/libexec</filename> to <filename
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80 | class="directory">/usr/lib/eglibc</filename>.</para>
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81 | </listitem>
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82 | </varlistentry>
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83 | </variablelist>
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84 |
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85 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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86 | href="../common/eglibc.xml"
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87 | xpointer="xpointer(//*[@os='j'])"/>
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88 |
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89 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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90 | href="../common/eglibc.xml"
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91 | xpointer="xpointer(//*[@os='k'])"/>
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92 |
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93 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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94 | href="../common/eglibc.xml"
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95 | xpointer="xpointer(//*[@os='l'])"/>
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96 |
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97 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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98 | href="../common/eglibc.xml"
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99 | xpointer="xpointer(//*[@os='m'])"/>
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100 |
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101 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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102 | href="../multilib/eglibc-64bit.xml"
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103 | xpointer="xpointer(//*[@os='n'])"/>
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104 |
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105 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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106 | href="../multilib/eglibc-64bit.xml"
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107 | xpointer="xpointer(//*[@os='o'])"/>
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108 |
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109 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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110 | href="../multilib/eglibc-64bit.xml"
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111 | xpointer="xpointer(//*[@os='p'])"/>
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112 |
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113 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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114 | href="../common/eglibc.xml"
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115 | xpointer="xpointer(//*[@os='q'])"/>
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116 |
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117 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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118 | href="../common/eglibc.xml"
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119 | xpointer="xpointer(//*[@os='r'])"/>
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120 |
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121 | <para>The install will finish by checking that everything is correctly installed.
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122 | Unfortunately, it will test for a multilib installation. On x86_64 Pure64 this means
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123 | it will try to test the non-existent 32-bit loader which has a different name
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124 | from the 64-bit loader (unlike on other 64-bit architectures). We fool it by
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125 | creating a symlink to the real loader.</para>
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126 |
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127 | <screen><userinput>ln -sv &eglibc-ld-name; /lib/ld-linux.so.2</userinput></screen>
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128 |
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129 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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130 | href="../common/eglibc.xml"
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131 | xpointer="xpointer(//*[@os='s'])"/>
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132 |
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133 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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134 | href="../common/eglibc.xml"
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135 | xpointer="xpointer(//*[@os='t'])"/>
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136 |
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137 | <para>Now we can remove this symlink. We also need to correct the <command>
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138 | /usr/bin/ldd</command> script - if you look at this, you will see it references
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139 | not only the 32-bit linker, but also /lib64 where it thinks the 64-bit linker
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140 | is. The following <command>sed</command> will correct this:</para>
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141 |
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142 | <screen><userinput>rm -v /lib/ld-linux.so.2
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143 | cp -v /usr/bin/ldd{,.bak}
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144 | sed '/RTLDLIST/s%/ld-linux.so.2 /lib64%%' /usr/bin/ldd.bak >/usr/bin/ldd</userinput></screen>
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145 |
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146 | <para>Check the script to make sure the sed worked correctly, then delete
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147 | the backup.</para>
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148 |
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149 | <screen><userinput>rm -v /usr/bin/ldd.bak</userinput></screen>
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150 |
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151 | <para os="u">The stubs.h header installed by EGLIBC looks for stubs-32.h
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152 | and stubs-64.h. This configuration of EGLIBC only generates stubs-64.h. Fix
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153 | this with the following:</para>
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154 |
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155 | <screen os="v"><userinput>mv -v /usr/include/gnu/stubs{-64,}.h</userinput></screen>
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156 |
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157 | </sect2>
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158 |
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159 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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160 | href="../common/eglibc.xml"
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161 | xpointer="xpointer(id('i18n-eglibc'))"/>
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162 |
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163 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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164 | href="../common/eglibc.xml"
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165 | xpointer="xpointer(id('conf-eglibc'))"/>
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166 |
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167 | <sect2 id="conf-ld" role="configuration">
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168 | <title>Configuring The Dynamic Loader</title>
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169 |
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170 | <indexterm zone="conf-ld">
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171 | <primary sortas="e-/etc/ld.so.conf">/etc/ld.so.conf</primary>
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172 | </indexterm>
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173 |
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174 | <para>By default, the dynamic loader (<filename
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175 | class="libraryfile">/lib/ld-linux-x86-64.so.2</filename>) searches through
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176 | <filename class="directory">/lib</filename> and <filename
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177 | class="directory">/usr/lib</filename> for dynamic libraries that are
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178 | needed by programs as they are run. However, if there are libraries in
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179 | directories other than <filename class="directory">/lib</filename> and
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180 | <filename class="directory">/usr/lib</filename>, these need to be
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181 | added to the <filename>/etc/ld.so.conf</filename> file in order
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182 | for the dynamic loader to find them. Two directories that are commonly
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183 | known to contain additional libraries are <filename
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184 | class="directory">/usr/local/lib</filename> and <filename
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185 | class="directory">/opt/lib</filename>, so add those directories to the
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186 | dynamic loader's search path.</para>
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187 |
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188 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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189 | href="../common/eglibc.xml"
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190 | xpointer="xpointer(//*[@os='ld-b'])"/>
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191 |
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192 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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193 | href="../common/eglibc.xml"
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194 | xpointer="xpointer(//*[@os='ld-c'])"/>
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195 |
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196 | </sect2>
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197 |
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198 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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199 | href="../common/eglibc.xml"
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200 | xpointer="xpointer(id('contents-eglibc'))"/>
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201 |
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202 | </sect1>
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