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-gcc" role="wrap">
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9 | <?dbhtml filename="gcc.html"?>
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10 |
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11 | <title>GCC-&gcc-version;</title>
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12 |
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13 | <indexterm zone="ch-system-gcc">
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14 | <primary sortas="a-GCC">GCC</primary>
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15 | </indexterm>
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16 |
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17 | <sect2 role="package">
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18 | <title/>
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19 |
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20 | <para>The GCC package contains the GNU compiler collection, which includes
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21 | the C and C++ compilers.</para>
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22 |
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23 | </sect2>
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24 |
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25 | <sect2 role="installation">
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26 | <title>Installation of GCC</title>
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27 |
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28 | <para os="p1">The following patch contains a number of updates to the
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29 | &gcc-version; branch by the GCC developers:</para>
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30 |
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31 | <screen os="p2"><userinput>patch -Np1 -i ../&gcc-branch_update-patch;</userinput></screen>
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32 |
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33 | <para os="fix1">Apply a <command>sed</command> substitution that will
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34 | suppress the execution of the <command>fixincludes</command> script:</para>
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35 |
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36 | <screen os="fix2"><userinput>sed -i 's@\./fixinc\.sh@-c true@' gcc/Makefile.in</userinput></screen>
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37 |
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38 | <para os="f">The GCC documentation recommends building GCC outside of the source
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39 | directory in a dedicated build directory:</para>
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40 |
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41 | <screen os="g"><userinput>mkdir -v ../gcc-build
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42 | cd ../gcc-build</userinput></screen>
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43 |
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44 | <para os="h">Prepare GCC for compilation:</para>
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45 |
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46 | <screen os="i"><userinput>SED=sed CC="gcc -isystem /usr/include" \
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47 | CXX="g++ -isystem /usr/include" \
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48 | LDFLAGS="-Wl,-rpath-link,/usr/lib:/lib" \
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49 | ../gcc-&gcc-version;/configure \
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50 | --prefix=/usr \
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51 | --libexecdir=/usr/lib \
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52 | --enable-languages=c,c++ \
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53 | --disable-multilib \
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54 | --with-system-zlib \
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55 | --enable-install-libiberty \
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56 | --disable-bootstrap</userinput></screen>
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57 |
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58 | <variablelist os="i1">
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59 | <title>The meaning of the new configure options:</title>
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60 |
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61 | <varlistentry>
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62 | <term><parameter>SED=sed</parameter></term>
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63 | <listitem>
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64 | <para>This prevents a hard-coded path to
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65 | <filename>/tools/bin/sed</filename> in the <command>fixincl</command>
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66 | program.</para>
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67 | </listitem>
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68 | </varlistentry>
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69 |
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70 | <varlistentry>
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71 | <term><parameter>--disable-bootstrap</parameter></term>
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72 | <listitem>
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73 | <para>For a native build, GCC defaults to performing a 3-stage
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74 | "bootstrap" of the compiler. This means that GCC is compiled a total
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75 | of 3 times - it is compiled once, the first stage compiler is used
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76 | to build itself again, and the second stage compiler builds itself
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77 | once more. The second and third passes are then compared, verifying
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78 | that GCC is able to reproduce itself successfully. However, there is
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79 | no need for this with the CLFS build process so we disable it here.</para>
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80 | </listitem>
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81 | </varlistentry>
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82 |
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83 | </variablelist>
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84 |
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85 | <para os="j">Compile the package:</para>
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86 |
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87 | <screen os="k"><userinput>make</userinput></screen>
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88 |
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89 | <important os="l">
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90 | <para>Due to GCC's critical role in a properly functioning system,
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91 | the CLFS developers strongly recommend running the testsuite.</para>
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92 | </important>
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93 |
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94 | <para os="s1">Increase the stack size prior to running the tests:</para>
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95 |
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96 | <screen os="s2"><userinput remap="test">ulimit -s 32768</userinput></screen>
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97 |
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98 | <para os="m">Test the results, but do not stop at errors:</para>
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99 |
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100 | <screen os="n"><userinput remap="test">make -k check</userinput></screen>
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101 |
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102 | <para os="o">The <parameter>-k</parameter> flag is used to make the test suite
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103 | run through to completion and not stop at the first failure. The GCC test
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104 | suite is very comprehensive and is almost guaranteed to generate a few
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105 | failures. To receive a summary of the test suite results, run:</para>
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106 |
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107 | <screen os="p"><userinput remap="test">../gcc-&gcc-version;/contrib/test_summary</userinput></screen>
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108 |
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109 | <para os="q">For only the summaries, pipe the output through
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110 | <userinput>grep -A7 Summ</userinput>.</para>
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111 |
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112 | <para os="r">A few unexpected failures cannot always be avoided. The
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113 | GCC developers are usually aware of these issues, but have not
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114 | resolved them yet.</para>
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115 |
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116 | <para os="s">Install the package:</para>
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117 |
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118 | <screen os="t"><userinput>make install</userinput></screen>
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119 |
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120 | <para os="w">Create a link to satisfy FHS requirements:</para>
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121 |
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122 | <screen os="x"><userinput>ln -sv ../usr/bin/cpp /lib</userinput></screen>
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123 |
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124 | <para os="y">Many packages use the name <command>cc</command> to call the C
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125 | compiler. To satisfy those packages, create a symlink:</para>
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126 |
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127 | <screen os="z"><userinput>ln -sv gcc /usr/bin/cc</userinput></screen>
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128 |
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129 | <para os="aa">Finally, move a misplaced file:</para>
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130 |
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131 | <screen os="ab"><userinput>mv -v /usr/lib/libstdc++*gdb.py /usr/share/gdb/auto-load/usr/lib</userinput></screen>
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132 |
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133 | </sect2>
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134 |
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135 | <sect2 id="contents-gcc" role="content">
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136 | <title>Contents of GCC</title>
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137 |
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138 | <segmentedlist>
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139 | <segtitle>Installed programs</segtitle>
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140 | <segtitle>Installed libraries</segtitle>
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141 | <segtitle>Installed directories</segtitle>
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142 |
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143 | <seglistitem>
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144 | <seg>c++, cc (link to gcc), cpp, g++, gcc, gcov, gcov-tool</seg>
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145 | <seg>libasan.[a,so], libatomic.[a,so], libcc1.so, libcilkrts.[a,so],
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146 | libgcc.a, libgcc_eh.a, libgcc_s.so, libgcov.a, libgomp.[a,so],
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147 | libiberty.a, libitm.[a,so], liblsan.[a,so], liblto_plugin.so,
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148 | libquadmath.[a,so], libssp.[a,so], libssp_nonshared.a,
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149 | libstdc++.[a,so], libsupc++.a, libtsan.[a,so], libubsan.[a,so],
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150 | libvtv.[a,so]</seg>
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151 | <seg>/usr/include/[c++,libiberty], /usr/lib/gcc,
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152 | /usr/share/gcc-&gcc-version;</seg>
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153 | </seglistitem>
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154 | </segmentedlist>
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155 |
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156 | <variablelist>
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157 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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158 | <?dbfo list-presentation="list"?>
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159 | <?dbhtml list-presentation="table"?>
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160 |
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161 | <varlistentry id="cc">
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162 | <term><command>cc</command></term>
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163 | <listitem>
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164 | <para>The C compiler</para>
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165 | <indexterm zone="ch-system-gcc cc">
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166 | <primary sortas="b-cc">cc</primary>
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167 | </indexterm>
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168 | </listitem>
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169 | </varlistentry>
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170 |
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171 | <varlistentry id="cpp">
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172 | <term><command>cpp</command></term>
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173 | <listitem>
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174 | <para>The C preprocessor; it is used by the compiler to expand the
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175 | #include, #define, and similar statements in the source files</para>
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176 | <indexterm zone="ch-system-gcc cpp">
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177 | <primary sortas="b-cpp">cpp</primary>
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178 | </indexterm>
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179 | </listitem>
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180 | </varlistentry>
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181 |
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182 | <varlistentry id="c">
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183 | <term><command>c++</command></term>
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184 | <listitem>
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185 | <para>The C++ compiler</para>
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186 | <indexterm zone="ch-system-gcc c">
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187 | <primary sortas="b-c++">c++</primary>
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188 | </indexterm>
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189 | </listitem>
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190 | </varlistentry>
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191 |
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192 | <varlistentry id="g">
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193 | <term><command>g++</command></term>
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194 | <listitem>
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195 | <para>The C++ compiler</para>
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196 | <indexterm zone="ch-system-gcc g">
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197 | <primary sortas="b-g++">g++</primary>
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198 | </indexterm>
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199 | </listitem>
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200 | </varlistentry>
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201 |
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202 | <varlistentry id="gcc">
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203 | <term><command>gcc</command></term>
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204 | <listitem>
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205 | <para>The C compiler</para>
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206 | <indexterm zone="ch-system-gcc gcc">
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207 | <primary sortas="b-gcc">gcc</primary>
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208 | </indexterm>
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209 | </listitem>
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210 | </varlistentry>
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211 |
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212 | <varlistentry id="gcov">
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213 | <term><command>gcov</command></term>
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214 | <listitem>
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215 | <para>A coverage testing tool; it is used to analyze programs to
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216 | determine where optimizations will have the most effect</para>
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217 | <indexterm zone="ch-system-gcc gcov">
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218 | <primary sortas="b-gcov">gcov</primary>
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219 | </indexterm>
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220 | </listitem>
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221 | </varlistentry>
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222 |
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223 | <varlistentry id="gcovtool">
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224 | <term><command>gcov-tool</command></term>
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225 | <listitem>
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226 | <para>An offline tool to handle gcda counts</para>
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227 | <indexterm zone="ch-system-gcc gcovtool">
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228 | <primary sortas="b-gcov-tool">gcov-tool</primary>
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229 | </indexterm>
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230 | </listitem>
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231 | </varlistentry>
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232 |
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233 | <varlistentry id="libasan">
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234 | <term><filename class="libraryfile">libasan</filename></term>
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235 | <listitem>
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236 | <para>The Address Sanitizer runtime library</para>
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237 | <indexterm zone="ch-system-gcc libasan">
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238 | <primary sortas="c-libasan">libasan</primary>
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239 | </indexterm>
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240 | </listitem>
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241 | </varlistentry>
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242 |
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243 | <varlistentry id="libatomic">
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244 | <term><filename class="libraryfile">libatomic</filename></term>
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245 | <listitem>
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246 | <para>A GCC support runtime library for atomic operations not
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247 | supported by hardware</para>
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248 | <indexterm zone="ch-system-gcc libatomic">
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249 | <primary sortas="c-libatomic">libatomic</primary>
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250 | </indexterm>
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251 | </listitem>
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252 | </varlistentry>
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253 |
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254 | <varlistentry id="libcc1">
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255 | <term><filename class="libraryfile">libcc1</filename></term>
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256 | <listitem>
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257 | <para>Translates API into RPC calls</para>
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258 | <indexterm zone="ch-system-gcc libcc1">
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259 | <primary sortas="c-libcc1">libcc1</primary>
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260 | </indexterm>
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261 | </listitem>
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262 | </varlistentry>
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263 |
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264 | <varlistentry id="libcilkrts">
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265 | <term><filename class="libraryfile">libcilkrts</filename></term>
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266 | <listitem>
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267 | <para>Intel® Cilk™ Plus runtime library</para>
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268 | <indexterm zone="ch-system-gcc libcilkrts">
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269 | <primary sortas="c-libcilkrts">libcilkrts</primary>
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270 | </indexterm>
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271 | </listitem>
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272 | </varlistentry>
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273 |
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274 | <varlistentry id="libgcc">
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275 | <term><filename class="libraryfile">libgcc</filename></term>
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276 | <listitem>
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277 | <para>Contains run-time support for <command>gcc</command></para>
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278 | <indexterm zone="ch-system-gcc libgcc">
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279 | <primary sortas="c-libgcc*">libgcc*</primary>
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280 | </indexterm>
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281 | </listitem>
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282 | </varlistentry>
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283 |
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284 | <varlistentry id="libgcov">
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285 | <term><filename class="libraryfile">libgcov</filename></term>
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286 | <listitem>
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287 | <para>Library that is linked into a program when
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288 | <command>gcc</command> is instructed to enable profiling</para>
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289 | <indexterm zone="ch-system-gcc libgcov">
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290 | <primary sortas="c-libgcov">libgcov</primary>
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291 | </indexterm>
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292 | </listitem>
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293 | </varlistentry>
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294 |
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295 | <varlistentry id="libgomp">
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296 | <term><filename class="libraryfile">libgomp</filename></term>
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297 | <listitem>
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298 | <para>GNU implementation of the OpenMP API for multi-platform
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299 | shared-memory parallel programming in C/C++ and Fortran</para>
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300 | <indexterm zone="ch-system-gcc libgomp">
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301 | <primary sortas="c-libgomp">libgomp</primary>
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302 | </indexterm>
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303 | </listitem>
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304 | </varlistentry>
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305 |
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306 | <varlistentry id="libiberty">
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307 | <term><filename class="libraryfile">libiberty</filename></term>
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308 | <listitem>
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309 | <para>Contains routines used by various GNU programs, including
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310 | <command>getopt</command>, <command>obstack</command>,
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311 | <command>strerror</command>, <command>strtol</command>, and
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312 | <command>strtoul</command></para>
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313 | <indexterm zone="ch-system-gcc libiberty">
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314 | <primary sortas="c-libiberty">libiberty</primary>
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315 | </indexterm>
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316 | </listitem>
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317 | </varlistentry>
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318 |
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319 | <varlistentry id="libitm">
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320 | <term><filename class="libraryfile">libitm</filename></term>
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321 | <listitem>
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322 | <para>The GNU Transactional Memory Library, which provides
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323 | transaction support for accesses to a process's memory</para>
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324 | <indexterm zone="ch-system-gcc libitm">
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325 | <primary sortas="c-libitm*">libitm*</primary>
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326 | </indexterm>
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327 | </listitem>
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328 | </varlistentry>
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329 |
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330 | <varlistentry id="liblsan">
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331 | <term><filename class="libraryfile">liblsan</filename></term>
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332 | <listitem>
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333 | <para>The Leak Sanitizer runtime library</para>
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334 | <indexterm zone="ch-system-gcc liblsan">
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335 | <primary sortas="c-liblsan">liblsan</primary>
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336 | </indexterm>
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337 | </listitem>
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338 | </varlistentry>
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339 |
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340 | <varlistentry id="liblto_plugin">
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341 | <term><filename class="libraryfile">liblto_plugin</filename></term>
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342 | <listitem>
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343 | <para>Runtime library for GCC's link-time optimization plugin</para>
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344 | <indexterm zone="ch-system-gcc liblto_plugin">
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345 | <primary sortas="c-liblto_plugin">liblto_plugin</primary>
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346 | </indexterm>
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347 | </listitem>
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348 | </varlistentry>
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349 |
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350 | <varlistentry id="libquadmath">
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351 | <term><filename class="libraryfile">libquadmath</filename></term>
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352 | <listitem>
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353 | <para>The GCC Quad-Precision Math Libarary API</para>
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354 | <indexterm zone="ch-system-gcc libquadmath">
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355 | <primary sortas="c-libquadmath*">libquadmath*</primary>
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356 | </indexterm>
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357 | </listitem>
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358 | </varlistentry>
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359 |
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360 | <varlistentry id="libssp">
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361 | <term><filename class="libraryfile">libssp</filename></term>
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362 | <listitem>
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363 | <para>Contains routines supporting GCC's stack-smashing protection
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364 | functionality</para>
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365 | <indexterm zone="ch-system-gcc libssp">
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366 | <primary sortas="c-libssp*">libssp*</primary>
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367 | </indexterm>
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368 | </listitem>
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369 | </varlistentry>
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370 |
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371 | <varlistentry id="libstdc">
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372 | <term><filename class="libraryfile">libstdc++</filename></term>
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373 | <listitem>
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374 | <para>The standard C++ library</para>
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375 | <indexterm zone="ch-system-gcc libstdc">
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376 | <primary sortas="c-libstdc++">libstdc++</primary>
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377 | </indexterm>
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378 | </listitem>
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379 | </varlistentry>
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380 |
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381 | <varlistentry id="libsupc">
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382 | <term><filename class="libraryfile">libsupc++</filename></term>
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383 | <listitem>
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384 | <para>Provides supporting routines for the C++ programming
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385 | language</para>
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386 | <indexterm zone="ch-system-gcc libsupc">
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387 | <primary sortas="c-libsupc++">libsupc++</primary>
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388 | </indexterm>
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389 | </listitem>
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390 | </varlistentry>
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391 |
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392 | <varlistentry id="libtsan">
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393 | <term><filename class="libraryfile">libtsan</filename></term>
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394 | <listitem>
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395 | <para>The Thread Sanitizer runtime library</para>
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396 | <indexterm zone="ch-system-gcc libtsan">
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397 | <primary sortas="c-libtsan">libtsan</primary>
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398 | </indexterm>
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399 | </listitem>
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400 | </varlistentry>
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401 |
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402 | <varlistentry id="libubsan">
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403 | <term><filename class="libraryfile">libubsan</filename></term>
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404 | <listitem>
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405 | <para>The Undefined Behavior Sanitizer runtime library</para>
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406 | <indexterm zone="ch-system-gcc libubsan">
|
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407 | <primary sortas="c-libubsan">libubsan</primary>
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408 | </indexterm>
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409 | </listitem>
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410 | </varlistentry>
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411 |
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412 | <varlistentry id="libvtv">
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413 | <term><filename class="libraryfile">libvtv</filename></term>
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414 | <listitem>
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415 | <para>The Virtual Table Verification runtime library</para>
|
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416 | <indexterm zone="ch-system-gcc libvtv">
|
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417 | <primary sortas="c-libvtv">libvtv</primary>
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418 | </indexterm>
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419 | </listitem>
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420 | </varlistentry>
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421 |
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422 | </variablelist>
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423 |
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424 | </sect2>
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425 |
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426 | </sect1>
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