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-cross-tools-eglibc-headers" role="wrap"> |
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9 | <?dbhtml filename="eglibc-headers.html"?> |
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10 | |
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11 | <title>EGLIBC-&eglibc-version; Headers</title> |
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12 | |
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13 | <indexterm zone="ch-cross-tools-eglibc-headers"> |
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14 | <primary sortas="a-EGLIBC">EGLIBC</primary> |
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15 | <secondary>cross tools, headers</secondary> |
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16 | </indexterm> |
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17 | |
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18 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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19 | href="../../final-system/common/eglibc.xml" |
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20 | xpointer="xpointer(//*[@role='package'])"/> |
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21 | |
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22 | <sect2 role="installation"> |
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23 | <title>Installation of EGLIBC Headers</title> |
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24 | |
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25 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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26 | href="../common/eglibc.xml" |
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27 | xpointer="xpointer(//*[@os='da'])"/> |
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28 | |
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29 | |
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30 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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31 | href="eglibc.xml" |
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32 | xpointer="xpointer(//*[@os='g1'])"/> |
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33 | |
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34 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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35 | href="../../final-system/mips/eglibc.xml" |
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36 | xpointer="xpointer(//*[@os='g2'])"/> |
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37 | |
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38 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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39 | href="../common/eglibc.xml" |
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40 | xpointer="xpointer(//*[@os='db'])"/> |
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41 | |
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42 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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43 | href="../common/eglibc.xml" |
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44 | xpointer="xpointer(//*[@os='dc'])"/> |
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45 | |
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46 | <para os="s1">EGLIBC's <filename>configure</filename> script checks the |
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47 | version of GCC, and will fail if it's less than 3.4. The next EGLIBC build |
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48 | will use the GCC that will be installed into |
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49 | <filename class="directory">/cross-tools</filename> in the next step. |
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50 | However, in this step only the EGLIBC headers are being installed - no |
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51 | compiling is taking place - so the GCC version isn't important. The |
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52 | following sed removes the dependency of GCC 3.4.x:</para> |
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53 | |
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54 | <screen os="s2"><userinput>cp -v configure{,.orig} |
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55 | sed -e 's/3.4/3.[0-9]/g' configure.orig > configure</userinput></screen> |
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56 | |
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57 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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58 | href="../../final-system/common/eglibc.xml" |
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59 | xpointer="xpointer(//*[@os='e'])"/> |
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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="../../final-system/common/eglibc.xml" |
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63 | xpointer="xpointer(//*[@os='f'])"/> |
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64 | |
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65 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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66 | href="../common/eglibc.xml" |
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67 | xpointer="xpointer(//*[@os='dd'])"/> |
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68 | |
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69 | <screen os="de"><userinput>cat > config.cache << "EOF" |
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70 | libc_cv_forced_unwind=yes |
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71 | libc_cv_c_cleanup=yes |
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72 | libc_cv_mlong_double_128=yes |
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73 | libc_cv_alpha_tls=yes |
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74 | libc_cv_gnu89_inline=yes |
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75 | libc_cv_ssp=no |
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76 | EOF</userinput></screen> |
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77 | |
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78 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" |
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79 | href="../../final-system/common/eglibc.xml" |
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80 | xpointer="xpointer(//*[@os='g'])"/> |
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81 | |
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82 | <screen os="s3"><userinput>CC=gcc ../eglibc-&eglibc-version;/configure --prefix=/tools \ |
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83 | --host=${CLFS_TARGET} --build=${CLFS_HOST} \ |
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84 | --disable-sanity-checks --enable-kernel=2.6.32 \ |
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85 | --with-headers=/tools/include --cache-file=config.cache \ |
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86 | --with-binutils=/cross-tools/${CLFS_TARGET}/bin</userinput></screen> |
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87 | |
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88 | <note os="e1"> |
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89 | <para><emphasis>Any</emphasis> error message you see about nptl at this point |
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90 | can safely be ignored.</para> |
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91 | </note> |
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92 | |
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93 | <variablelist os="ca"> |
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94 | <title>The meaning of the configure options:</title> |
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95 | |
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96 | <varlistentry os="ca1"> |
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97 | <term><parameter>CC=gcc</parameter></term> |
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98 | <listitem> |
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99 | <para>Tells EGLIBC to use the host's GCC compiler.</para> |
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100 | </listitem> |
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101 | </varlistentry> |
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102 | |
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103 | <varlistentry os="ca2"> |
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104 | <term><parameter>--prefix=/tools</parameter></term> |
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105 | <listitem> |
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106 | <para>This tells the configure script to prepare to install the |
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107 | package in the <filename class="directory">/tools</filename> |
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108 | directory.</para> |
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109 | </listitem> |
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110 | </varlistentry> |
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111 | |
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112 | <varlistentry os="ca3"> |
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113 | <term><parameter>--build=${CLFS_HOST}</parameter></term> |
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114 | <listitem> |
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115 | <para>When used with --host, this creates a cross-architecture |
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116 | executable that creates files for ${CLFS_TARGET} but runs on ${CLFS_HOST}.</para> |
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117 | </listitem> |
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118 | </varlistentry> |
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119 | |
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120 | <varlistentry os="ca4"> |
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121 | <term><parameter>--host=${CLFS_TARGET}</parameter></term> |
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122 | <listitem> |
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123 | <para>When used with --build, this creates a cross-architecture |
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124 | executable that creates files for ${CLFS_TARGET} but runs on ${CLFS_HOST}.</para> |
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125 | </listitem> |
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126 | </varlistentry> |
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127 | |
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128 | <varlistentry os="ca5"> |
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129 | <term><parameter>--disable-sanity-checks</parameter></term> |
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130 | <listitem> |
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131 | <para>This switch disables any checks that are in place.</para> |
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132 | </listitem> |
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133 | </varlistentry> |
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134 | |
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135 | <varlistentry os="ca6"> |
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136 | <term><parameter>--enable-kernel=2.6.32</parameter></term> |
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137 | <listitem> |
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138 | <para>This tells EGLIBC to compile the library with support |
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139 | for 2.6.32 and later Linux kernels.</para> |
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140 | </listitem> |
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141 | </varlistentry> |
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142 | |
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143 | <varlistentry os="ca7"> |
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144 | <term><parameter>--with-headers=/tools/include</parameter></term> |
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145 | <listitem> |
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146 | <para>This tells EGLIBC to compile itself against the headers |
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147 | recently installed to the <filename class="directory">/tools</filename> |
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148 | directory, so that it knows exactly what features the kernel has |
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149 | and can optimize itself accordingly.</para> |
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150 | </listitem> |
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151 | </varlistentry> |
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152 | |
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153 | <varlistentry os="ca8"> |
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154 | <term><parameter>--with-binutils=/cross-tools/${CLFS_TARGET}/bin</parameter></term> |
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155 | <listitem> |
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156 | <para>This tells EGLIBC to use the Binutils for our specific target architecture.</para> |
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157 | </listitem> |
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158 | </varlistentry> |
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159 | |
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160 | </variablelist> |
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161 | |
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162 | <para os="cb">Now, install the headers:</para> |
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163 | |
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164 | <screen os="cd"><userinput>make install-headers</userinput></screen> |
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165 | |
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166 | <para os="ce">Some files aren't installed by the above command, so |
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167 | we will copy the additional header files we need.</para> |
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168 | |
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169 | <para os="cf">First we will copy a common file over to <filename |
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170 | class="directory">/tools/include</filename>:</para> |
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171 | |
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172 | <screen os="cg"><userinput>install -dv /tools/include/bits |
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173 | cp -v bits/stdio_lim.h /tools/include/bits</userinput></screen> |
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174 | |
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175 | <para os="ch">Now we will create a blank stub file:</para> |
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176 | |
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177 | <screen os="ci"><userinput>touch /tools/include/gnu/stubs.h</userinput></screen> |
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178 | |
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179 | <para os="cj">Another header is needed for NPTL:</para> |
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180 | |
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181 | <screen><userinput>cp -v ../eglibc-&eglibc-version;/nptl/sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h \ |
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182 | /tools/include/bits/</userinput></screen> |
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183 | |
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184 | </sect2> |
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185 | |
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186 | <sect2 role="content"> |
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187 | <title/> |
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188 | |
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189 | <para>Details on this package are located in <xref |
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190 | linkend="contents-eglibc" role="."/></para> |
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191 | |
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192 | </sect2> |
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193 | |
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194 | </sect1> |
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