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 | <sect1info condition="script">
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12 | <productname>gcc</productname>
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13 | <productnumber>&gcc-version;</productnumber>
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14 | <address>&gcc-url;</address>
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15 | </sect1info>
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16 |
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17 | <title>GCC-&gcc-version;</title>
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18 |
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19 | <indexterm zone="ch-system-gcc">
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20 | <primary sortas="a-GCC">GCC</primary>
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21 | </indexterm>
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22 |
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23 | <sect2 role="package">
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24 | <title/>
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25 |
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26 | <para>The GCC package contains the GNU compiler collection, which includes
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27 | the C and C++ compilers.</para>
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28 |
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29 | <segmentedlist>
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30 | <segtitle>&buildtime;</segtitle>
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31 | <segtitle>&diskspace;</segtitle>
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32 |
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33 | <seglistitem>
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34 | <seg>&gcc-fin-sbu;</seg>
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35 | <seg>&gcc-fin-du;</seg>
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36 | </seglistitem>
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37 | </segmentedlist>
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38 |
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39 | </sect2>
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40 |
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41 | <sect2 role="installation">
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42 | <title>Installation of GCC</title>
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43 | <!--
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44 | <para>At first, fix an issue breaking
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45 | <filename class="libraryfile">libasan.a</filename> building this package
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46 | with Glibc-2.34 or later:</para>
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47 |
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48 | <screen><userinput remap="pre">sed -e '/static.*SIGSTKSZ/d' \
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49 | -e 's/return kAltStackSize/return SIGSTKSZ * 4/' \
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50 | -i libsanitizer/sanitizer_common/sanitizer_posix_libcdep.cpp</userinput></screen>
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51 | -->
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52 | <!--
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53 | <para>First fix a problem with the latest version of glibc:</para>
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54 |
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55 | <screen><userinput remap="pre">patch -Np1 -i ../&gcc-upstream-fixes-patch;</userinput></screen>
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56 | -->
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57 | <para>If building on x86_64, change the default directory name for 64-bit
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58 | libraries to <quote>lib</quote>:</para>
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59 |
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60 | <screen arch="default"><userinput remap="pre">case $(uname -m) in
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61 | x86_64)
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62 | sed -e '/m64=/s/lib64/lib/' \
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63 | -i.orig gcc/config/i386/t-linux64
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64 | ;;
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65 | esac</userinput></screen>
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66 |
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67 | <para arch="ml_32,ml_x32,ml_all">Change the default directory name for 64-bit
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68 | libraries to <quote>lib</quote>:</para>
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69 |
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70 | <screen arch="ml_32,ml_x32,ml_all"><userinput remap="pre">sed -e '/m64=/s/lib64/lib/' \
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71 | -e '/m32=/s/m32=.*/m32=..\/lib32$(call if_multiarch,:i386-linux-gnu)/' \
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72 | -i.orig gcc/config/i386/t-linux64</userinput></screen>
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73 |
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74 | <para>The GCC documentation recommends building GCC in a dedicated build directory:</para>
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75 |
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76 | <screen><userinput remap="pre">mkdir -v build
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77 | cd build</userinput></screen>
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78 |
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79 | <para>Prepare GCC for compilation:</para>
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80 |
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81 | <screen arch="default"><userinput remap="configure">../configure --prefix=/usr \
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82 | LD=ld \
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83 | --enable-languages=c,c++ \
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84 | --enable-default-pie \
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85 | --enable-default-ssp \
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86 | --disable-multilib \
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87 | --disable-bootstrap \
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88 | --disable-fixincludes \
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89 | --with-system-zlib</userinput></screen>
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90 | <screen arch="ml_32,ml_x32,ml_all"><userinput remap="configure"
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91 | arch="ml_32" >mlist=m64,m32</userinput><userinput remap="configure"
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92 | arch="ml_x32">mlist=m64,mx32</userinput><userinput remap="configure"
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93 | arch="ml_all">mlist=m64,m32,mx32</userinput>
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94 | <userinput remap="configure">../configure --prefix=/usr \
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95 | LD=ld \
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96 | --enable-languages=c,c++ \
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97 | --enable-default-pie \
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98 | --enable-default-ssp \
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99 | --enable-multilib \
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100 | --with-multilib-list=$mlist \
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101 | --disable-bootstrap \
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102 | --disable-fixincludes \
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103 | --with-system-zlib</userinput></screen>
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104 |
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105 | <para>GCC supports seven different computer languages, but the
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106 | prerequisites for most of them have not yet been installed. See the
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107 | <ulink url="&blfs-book;general/gcc.html">BLFS Book GCC page</ulink>
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108 | for instructions on how to build all of GCC's supported languages.</para>
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109 |
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110 | <variablelist>
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111 | <title>The meaning of the new configure parameters:</title>
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112 |
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113 | <varlistentry>
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114 | <term><parameter>LD=ld</parameter></term>
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115 | <listitem>
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116 | <para>This parameter makes the configure script use the ld program installed
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117 | by the Binutils package built earlier in this chapter, rather than
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118 | the cross-built version which would otherwise be used.</para>
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119 | </listitem>
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120 | </varlistentry>
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121 |
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122 | <varlistentry>
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123 | <term><parameter>--disable-fixincludes</parameter></term>
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124 | <listitem>
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125 | <para>By default, during the installation of GCC some system
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126 | headers would be <quote>fixed</quote> to be used with GCC. This
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127 | is not necessary for a modern Linux system, and potentially
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128 | harmful if a package is reinstalled after installing GCC. This
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129 | switch prevents GCC from <quote>fixing</quote> the headers.</para>
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130 | </listitem>
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131 | </varlistentry>
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132 |
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133 | <varlistentry>
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134 | <term><parameter>--with-system-zlib</parameter></term>
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135 | <listitem>
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136 | <para>This switch tells GCC to link to the system installed copy of
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137 | the Zlib library, rather than its own internal copy.</para>
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138 | </listitem>
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139 | </varlistentry>
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140 | </variablelist>
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141 |
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142 | <note>
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143 | <anchor id="pie-ssp-info" xreflabel="note on PIE and SSP"/>
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144 | <para>
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145 | PIE (position-independent executables) are
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146 | binary programs that can be loaded anywhere in memory. Without PIE,
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147 | the security feature named ASLR (Address Space Layout Randomization)
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148 | can be applied for the shared libraries, but not for the executables
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149 | themselves. Enabling PIE allows ASLR for the executables in addition to
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150 | the shared libraries, and mitigates some attacks based on fixed
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151 | addresses of sensitive code or data in the executables.
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152 | </para>
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153 | <para>
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154 | SSP (Stack Smashing Protection) is a technique to ensure
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155 | that the parameter stack is not corrupted. Stack corruption can,
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156 | for example, alter the return address of a subroutine,
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157 | thus transferring control to some dangerous code
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158 | (existing in the program or shared libraries, or injected by the
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159 | attacker somehow).
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160 | </para>
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161 | </note>
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162 |
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163 | <para>Compile the package:</para>
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164 |
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165 | <screen><userinput remap="make">make</userinput></screen>
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166 |
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167 | <important>
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168 | <para>In this section, the test suite for GCC is considered
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169 | important, but it takes a long time. First-time builders are
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170 | encouraged to run the test suite. The time to run the tests can be
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171 | reduced significantly by adding -jx to the <command>make -k check</command> command below,
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172 | where x is the number of CPU cores on your system.</para>
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173 | </important>
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174 |
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175 | <para>One set of tests in the GCC test suite is known to exhaust the default
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176 | stack, so increase the stack size prior to running the tests:</para>
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177 |
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178 | <screen><userinput remap="test">ulimit -s 32768</userinput></screen>
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179 |
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180 | <para>Test the results as a non-privileged user, but do not stop at errors:</para>
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181 |
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182 | <screen><userinput remap="test">chown -Rv tester .
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183 | su tester -c "PATH=$PATH make -k check"</userinput></screen>
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184 |
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185 | <para>To extract a summary of the test suite results, run:</para>
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186 |
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187 | <screen><userinput remap="test">../contrib/test_summary</userinput></screen>
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188 |
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189 | <para>To filter out only the summaries, pipe the output through
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190 | <userinput>grep -A7 Summ</userinput>.</para>
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191 |
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192 | <para>Results can be compared with those located at <ulink
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193 | url="&test-results;"/> and
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194 | <ulink url="https://gcc.gnu.org/ml/gcc-testresults/"/>.</para>
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195 |
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196 | <para><!--Two tests named <filename>pr104610.c</filename> and
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197 | <filename>pr69482-1.c</filename> are known to fail because the test
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198 | files does not account for the
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199 | <parameter>- -enable-default-ssp</parameter> option.-->
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200 | <!-- https://gcc.gnu.org/PR106375 and https://gcc.gnu.org/PR109353 -->
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201 | Two tests named <filename>copy.cc</filename> and
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202 | <filename>pr56837.c</filename> are known to fail.
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203 | <!-- https://gcc.gnu.org/PR107855#c6 -->
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204 | Additionally, several tests in the
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205 | <filename class='directory'>vect</filename> directory are known to fail
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206 | if the hardware does not support AVX.</para>
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207 |
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208 | <para>
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209 | With Glibc-2.38, the analyzer tests named
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210 | <filename>data-model-4.c</filename> and
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211 | <filename>conftest-1.c</filename>
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212 | are known to fail.
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213 | In the asan tests, several tests in <filename>asan_test.C</filename>
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214 | are known to fail.
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215 | The test named <filename>interception-malloc-test-1.C</filename>
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216 | is known to fail.
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217 | </para>
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218 |
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219 | <para>A few unexpected failures cannot always be avoided. The GCC developers
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220 | are usually aware of these issues, but have not resolved them yet.
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221 | Unless the test results are vastly different from those at the above URL,
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222 | it is safe to continue.</para>
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223 |
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224 | <!--note><para>
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225 | On some combinations of kernel configuration and AMD processors
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226 | there may be more than 1100 failures in the gcc.target/i386/mpx
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227 | tests (which are designed to test the MPX option on recent
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228 | Intel processors). These can safely be ignored on AMD
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229 | processors. These tests will also fail on Intel processors if MPX support
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230 | is not enabled in the kernel even though it is present on the CPU.
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231 | </para></note-->
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232 |
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233 | <para>Install the package:</para>
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234 |
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235 | <screen><userinput remap="install">make install</userinput></screen>
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236 |
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237 | <para>The GCC build directory is owned by <systemitem class="username">
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238 | tester</systemitem> now, and the ownership of the installed header
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239 | directory (and its content) is incorrect. Change the ownership to the
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240 | <systemitem class="username">root</systemitem> user and group:</para>
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241 |
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242 | <screen><userinput remap="install">chown -v -R root:root \
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243 | /usr/lib/gcc/$(gcc -dumpmachine)/&gcc-version;/include{,-fixed}</userinput></screen>
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244 |
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245 | <para>Create a symlink required by the <ulink
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246 | url="https://refspecs.linuxfoundation.org/FHS_3.0/fhs/ch03s09.html">FHS</ulink>
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247 | for "historical" reasons.</para>
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248 |
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249 | <screen><userinput remap="install">ln -svr /usr/bin/cpp /usr/lib</userinput></screen>
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250 |
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251 | <para>Many packages use the name <command>cc</command> to call the C
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252 | compiler. We've already created <command>cc</command> as a symlink in
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253 | <xref linkend='ch-tools-gcc-pass2'/>, create its man page as a symlink
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254 | as well:</para>
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255 |
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256 | <screen><userinput remap="install">ln -sv gcc.1 /usr/share/man/man1/cc.1</userinput></screen>
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257 |
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258 | <para>Add a compatibility symlink to enable building programs with
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259 | Link Time Optimization (LTO):</para>
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260 |
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261 | <screen><userinput remap="install">ln -sfv ../../libexec/gcc/$(gcc -dumpmachine)/&gcc-version;/liblto_plugin.so \
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262 | /usr/lib/bfd-plugins/</userinput></screen>
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263 |
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264 | <para>Now that our final toolchain is in place, it is important to again ensure
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265 | that compiling and linking will work as expected. We do this by performing
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266 | some sanity checks:</para>
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267 |
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268 | <screen><userinput>echo 'int main(){}' > dummy.c
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269 | cc dummy.c -v -Wl,--verbose &> dummy.log
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270 | readelf -l a.out | grep ': /lib'</userinput></screen>
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271 |
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272 | <para>There should be no errors,
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273 | and the output of the last command will be (allowing for
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274 | platform-specific differences in the dynamic linker name):</para>
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275 |
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276 | <screen><computeroutput>[Requesting program interpreter: /lib64/ld-linux-x86-64.so.2]</computeroutput></screen>
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277 |
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278 | <para>Now make sure that we're set up to use the correct start files:</para>
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279 |
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280 | <screen><userinput>grep -E -o '/usr/lib.*/S?crt[1in].*succeeded' dummy.log</userinput></screen>
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281 |
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282 | <para>The output of the last command should be:</para>
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283 |
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284 | <screen><computeroutput>/usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/../../../../lib/Scrt1.o succeeded
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285 | /usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/../../../../lib/crti.o succeeded
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286 | /usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/../../../../lib/crtn.o succeeded</computeroutput></screen>
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287 |
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288 | <para>Depending on your machine architecture, the above may differ slightly.
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289 | The difference will be the name of the directory
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290 | after <filename class="directory">/usr/lib/gcc</filename>. The important
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291 | thing to look for here is that <command>gcc</command> has found all three
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292 | <filename>crt*.o</filename> files under the
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293 | <filename class="directory">/usr/lib</filename> directory.</para>
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294 |
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295 | <para>Verify that the compiler is searching for the correct header
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296 | files:</para>
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297 |
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298 | <screen><userinput>grep -B4 '^ /usr/include' dummy.log</userinput></screen>
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299 |
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300 | <para>This command should return the following output:</para>
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301 |
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302 | <screen><computeroutput>#include <...> search starts here:
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303 | /usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/include
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304 | /usr/local/include
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305 | /usr/lib/gcc/x86_64-pc-linux-gnu/&gcc-version;/include-fixed
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306 | /usr/include</computeroutput></screen>
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307 |
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308 | <para>Again, the directory named after your target triplet may be
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309 | different than the above, depending on your system architecture.</para>
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310 |
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311 | <para>Next, verify that the new linker is being used with the correct search paths:</para>
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312 |
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313 | <screen><userinput>grep 'SEARCH.*/usr/lib' dummy.log |sed 's|; |\n|g'</userinput></screen>
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314 |
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315 | <para>References to paths that have components with '-linux-gnu' should
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316 | be ignored, but otherwise the output of the last command should be:</para>
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317 |
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318 | <screen><computeroutput>SEARCH_DIR("/usr/x86_64-pc-linux-gnu/lib64")
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319 | SEARCH_DIR("/usr/local/lib64")
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320 | SEARCH_DIR("/lib64")
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321 | SEARCH_DIR("/usr/lib64")
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322 | SEARCH_DIR("/usr/x86_64-pc-linux-gnu/lib")
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323 | SEARCH_DIR("/usr/local/lib")
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324 | SEARCH_DIR("/lib")
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325 | SEARCH_DIR("/usr/lib");</computeroutput></screen>
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326 |
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327 | <para arch="default">A 32-bit system may use a few other directories. For example, here
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328 | is the output from an i686 machine:</para>
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329 |
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330 | <!-- not using entities here as the dir names has nothing to do with multilib -->
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331 | <screen arch="default"><computeroutput>SEARCH_DIR("/usr/i686-pc-linux-gnu/lib32")
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332 | SEARCH_DIR("/usr/local/lib32")
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333 | SEARCH_DIR("/lib32")
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334 | SEARCH_DIR("/usr/lib32")
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335 | SEARCH_DIR("/usr/i686-pc-linux-gnu/lib")
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336 | SEARCH_DIR("/usr/local/lib")
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337 | SEARCH_DIR("/lib")
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338 | SEARCH_DIR("/usr/lib");</computeroutput></screen>
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339 |
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340 | <para>Next make sure that we're using the correct libc:</para>
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341 |
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342 | <screen><userinput>grep "/lib.*/libc.so.6 " dummy.log</userinput></screen>
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343 |
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344 | <para>The output of the last command should be:</para>
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345 |
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346 | <screen><computeroutput>attempt to open /usr/lib/libc.so.6 succeeded</computeroutput></screen>
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347 |
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348 | <para>Make sure GCC is using the correct dynamic linker:</para>
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349 |
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350 | <screen><userinput>grep found dummy.log</userinput></screen>
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351 |
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352 | <para>The output of the last command should be (allowing for
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353 | platform-specific differences in dynamic linker name):</para>
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354 |
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355 | <screen><computeroutput>found ld-linux-x86-64.so.2 at /usr/lib/ld-linux-x86-64.so.2</computeroutput></screen>
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356 |
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357 | <para>If the output does not appear as shown above or is not received
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358 | at all, then something is seriously wrong. Investigate and retrace the
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359 | steps to find out where the problem is and correct it. <!--The most likely
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360 | reason is that something went wrong with the specs file adjustment.--> Any
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361 | issues should be resolved before continuing with the process.</para>
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362 |
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363 | <para>Once everything is working correctly, clean up the test files:</para>
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364 |
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365 | <screen><userinput>rm -v dummy.c a.out dummy.log</userinput></screen>
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366 |
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367 | <para>Finally, move a misplaced file:</para>
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368 |
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369 | <screen><userinput remap="install">mkdir -pv /usr/share/gdb/auto-load/usr/lib
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370 | mv -v /usr/lib/*gdb.py /usr/share/gdb/auto-load/usr/lib</userinput></screen>
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371 |
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372 | </sect2>
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373 |
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374 | <sect2 id="contents-gcc" role="content">
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375 | <title>Contents of GCC</title>
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376 |
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377 | <segmentedlist>
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378 | <segtitle>Installed programs</segtitle>
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379 | <segtitle>Installed libraries</segtitle>
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380 | <segtitle>Installed directories</segtitle>
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381 |
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382 | <seglistitem>
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383 | <seg>c++, cc (link to gcc), cpp, g++, gcc,
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384 | gcc-ar, gcc-nm, gcc-ranlib, gcov, gcov-dump, gcov-tool,
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385 | and lto-dump</seg>
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386 |
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387 | <seg>libasan.{a,so}, libatomic.{a,so}, libcc1.so, libgcc.a, libgcc_eh.a,
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388 | libgcc_s.so, libgcov.a, libgomp.{a,so}, libhwasan.{a,so}, libitm.{a,so},
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389 | liblsan.{a,so}, liblto_plugin.so,
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390 | libquadmath.{a,so}, libssp.{a,so}, libssp_nonshared.a,
|
---|
391 | libstdc++.{a,so}, libstdc++exp.a, libstdc++fs.a, libsupc++.a, libtsan.{a,so},
|
---|
392 | and libubsan.{a,so}</seg>
|
---|
393 |
|
---|
394 | <seg>/usr/include/c++, /usr/lib/gcc, /usr/libexec/gcc, and
|
---|
395 | /usr/share/gcc-&gcc-version;</seg>
|
---|
396 | </seglistitem>
|
---|
397 | </segmentedlist>
|
---|
398 |
|
---|
399 | <variablelist>
|
---|
400 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
|
---|
401 | <?dbfo list-presentation="list"?>
|
---|
402 | <?dbhtml list-presentation="table"?>
|
---|
403 |
|
---|
404 | <varlistentry id="c">
|
---|
405 | <term><command>c++</command></term>
|
---|
406 | <listitem>
|
---|
407 | <para>The C++ compiler</para>
|
---|
408 | <indexterm zone="ch-system-gcc c">
|
---|
409 | <primary sortas="b-c++">c++</primary>
|
---|
410 | </indexterm>
|
---|
411 | </listitem>
|
---|
412 | </varlistentry>
|
---|
413 |
|
---|
414 | <varlistentry id="cc">
|
---|
415 | <term><command>cc</command></term>
|
---|
416 | <listitem>
|
---|
417 | <para>The C compiler</para>
|
---|
418 | <indexterm zone="ch-system-gcc cc">
|
---|
419 | <primary sortas="b-cc">cc</primary>
|
---|
420 | </indexterm>
|
---|
421 | </listitem>
|
---|
422 | </varlistentry>
|
---|
423 |
|
---|
424 | <varlistentry id="cpp">
|
---|
425 | <term><command>cpp</command></term>
|
---|
426 | <listitem>
|
---|
427 | <para>The C preprocessor; it is used by the compiler to expand the
|
---|
428 | #include, #define, and similar directives in the source files</para>
|
---|
429 | <indexterm zone="ch-system-gcc cpp">
|
---|
430 | <primary sortas="b-cpp">cpp</primary>
|
---|
431 | </indexterm>
|
---|
432 | </listitem>
|
---|
433 | </varlistentry>
|
---|
434 |
|
---|
435 | <varlistentry id="g">
|
---|
436 | <term><command>g++</command></term>
|
---|
437 | <listitem>
|
---|
438 | <para>The C++ compiler</para>
|
---|
439 | <indexterm zone="ch-system-gcc g">
|
---|
440 | <primary sortas="b-g++">g++</primary>
|
---|
441 | </indexterm>
|
---|
442 | </listitem>
|
---|
443 | </varlistentry>
|
---|
444 |
|
---|
445 | <varlistentry id="gcc">
|
---|
446 | <term><command>gcc</command></term>
|
---|
447 | <listitem>
|
---|
448 | <para>The C compiler</para>
|
---|
449 | <indexterm zone="ch-system-gcc gcc">
|
---|
450 | <primary sortas="b-gcc">gcc</primary>
|
---|
451 | </indexterm>
|
---|
452 | </listitem>
|
---|
453 | </varlistentry>
|
---|
454 |
|
---|
455 | <varlistentry id="gcc-ar">
|
---|
456 | <term><command>gcc-ar</command></term>
|
---|
457 | <listitem>
|
---|
458 | <para>A wrapper around <command>ar</command> that adds a
|
---|
459 | plugin to the command line. This program is only used
|
---|
460 | to add "link time optimization" and is not useful with the
|
---|
461 | default build options.</para>
|
---|
462 | <indexterm zone="ch-system-gcc gcc-ar">
|
---|
463 | <primary sortas="b-gcc-ar">gc-ar</primary>
|
---|
464 | </indexterm>
|
---|
465 | </listitem>
|
---|
466 | </varlistentry>
|
---|
467 |
|
---|
468 | <varlistentry id="gcc-nm">
|
---|
469 | <term><command>gcc-nm</command></term>
|
---|
470 | <listitem>
|
---|
471 | <para>A wrapper around <command>nm</command> that adds a
|
---|
472 | plugin to the command line. This program is only used
|
---|
473 | to add "link time optimization" and is not useful with the
|
---|
474 | default build options.</para>
|
---|
475 | <indexterm zone="ch-system-gcc gcc-nm">
|
---|
476 | <primary sortas="b-gcc-nm">gc-nm</primary>
|
---|
477 | </indexterm>
|
---|
478 | </listitem>
|
---|
479 | </varlistentry>
|
---|
480 |
|
---|
481 | <varlistentry id="gcc-ranlib">
|
---|
482 | <term><command>gcc-ranlib</command></term>
|
---|
483 | <listitem>
|
---|
484 | <para>A wrapper around <command>ranlib</command> that adds a
|
---|
485 | plugin to the command line. This program is only used
|
---|
486 | to add "link time optimization" and is not useful with the
|
---|
487 | default build options.</para>
|
---|
488 | <indexterm zone="ch-system-gcc gcc-ranlib">
|
---|
489 | <primary sortas="b-gcc-ranlib">gc-ranlib</primary>
|
---|
490 | </indexterm>
|
---|
491 | </listitem>
|
---|
492 | </varlistentry>
|
---|
493 |
|
---|
494 | <varlistentry id="gcov">
|
---|
495 | <term><command>gcov</command></term>
|
---|
496 | <listitem>
|
---|
497 | <para>A coverage testing tool; it is used to analyze programs to
|
---|
498 | determine where optimizations will have the greatest effect</para>
|
---|
499 | <indexterm zone="ch-system-gcc gcov">
|
---|
500 | <primary sortas="b-gcov">gcov</primary>
|
---|
501 | </indexterm>
|
---|
502 | </listitem>
|
---|
503 | </varlistentry>
|
---|
504 |
|
---|
505 | <varlistentry id="gcov-dump">
|
---|
506 | <term><command>gcov-dump</command></term>
|
---|
507 | <listitem>
|
---|
508 | <para>Offline gcda and gcno profile dump tool</para>
|
---|
509 | <indexterm zone="ch-system-gcc gcov-dump">
|
---|
510 | <primary sortas="b-gcov-dump">gcov-dump</primary>
|
---|
511 | </indexterm>
|
---|
512 | </listitem>
|
---|
513 | </varlistentry>
|
---|
514 |
|
---|
515 | <varlistentry id="gcov-tool">
|
---|
516 | <term><command>gcov-tool</command></term>
|
---|
517 | <listitem>
|
---|
518 | <para>Offline gcda profile processing tool</para>
|
---|
519 | <indexterm zone="ch-system-gcc gcov-tool">
|
---|
520 | <primary sortas="b-gcov-tool">gcov-tool</primary>
|
---|
521 | </indexterm>
|
---|
522 | </listitem>
|
---|
523 | </varlistentry>
|
---|
524 |
|
---|
525 | <varlistentry id="lto-dump">
|
---|
526 | <term><command>lto-dump</command></term>
|
---|
527 | <listitem>
|
---|
528 | <para>Tool for dumping object files produced by GCC with LTO
|
---|
529 | enabled</para>
|
---|
530 | <indexterm zone="ch-system-gcc lto-dump">
|
---|
531 | <primary sortas="b-lto-dump">lto-dump</primary>
|
---|
532 | </indexterm>
|
---|
533 | </listitem>
|
---|
534 | </varlistentry>
|
---|
535 |
|
---|
536 | <varlistentry id="libasan">
|
---|
537 | <term><filename class="libraryfile">libasan</filename></term>
|
---|
538 | <listitem>
|
---|
539 | <para>The Address Sanitizer runtime library</para>
|
---|
540 | <indexterm zone="ch-system-gcc libasan">
|
---|
541 | <primary sortas="b-libasan">libasan</primary>
|
---|
542 | </indexterm>
|
---|
543 | </listitem>
|
---|
544 | </varlistentry>
|
---|
545 |
|
---|
546 | <varlistentry id="libatomic">
|
---|
547 | <term><filename class="libraryfile">libatomic</filename></term>
|
---|
548 | <listitem>
|
---|
549 | <para>GCC atomic built-in runtime library</para>
|
---|
550 | <indexterm zone="ch-system-gcc libatomic">
|
---|
551 | <primary sortas="b-libatomic">libatomic</primary>
|
---|
552 | </indexterm>
|
---|
553 | </listitem>
|
---|
554 | </varlistentry>
|
---|
555 |
|
---|
556 | <varlistentry id="libcc1">
|
---|
557 | <term><filename class="libraryfile">libcc1</filename></term>
|
---|
558 | <listitem>
|
---|
559 | <para>The C preprocessing library</para>
|
---|
560 | <indexterm zone="ch-system-gcc libcc1">
|
---|
561 | <primary sortas="b-libcc1">libcc1</primary>
|
---|
562 | </indexterm>
|
---|
563 | </listitem>
|
---|
564 | </varlistentry>
|
---|
565 |
|
---|
566 | <varlistentry id="libgcc">
|
---|
567 | <term><filename class="libraryfile">libgcc</filename></term>
|
---|
568 | <listitem>
|
---|
569 | <para>Contains run-time support for <command>gcc</command></para>
|
---|
570 | <indexterm zone="ch-system-gcc libgcc">
|
---|
571 | <primary sortas="c-libgcc">libgcc</primary>
|
---|
572 | </indexterm>
|
---|
573 | </listitem>
|
---|
574 | </varlistentry>
|
---|
575 |
|
---|
576 | <varlistentry id="libgcov">
|
---|
577 | <term><filename class="libraryfile">libgcov</filename></term>
|
---|
578 | <listitem>
|
---|
579 | <para>This library is linked into a program when GCC is instructed
|
---|
580 | to enable profiling</para>
|
---|
581 | <indexterm zone="ch-system-gcc libgcov">
|
---|
582 | <primary sortas="c-libgcov">libgcov</primary>
|
---|
583 | </indexterm>
|
---|
584 | </listitem>
|
---|
585 | </varlistentry>
|
---|
586 |
|
---|
587 | <varlistentry id="libgomp">
|
---|
588 | <term><filename class="libraryfile">libgomp</filename></term>
|
---|
589 | <listitem>
|
---|
590 | <para>GNU implementation of the OpenMP API for multi-platform
|
---|
591 | shared-memory parallel programming in C/C++ and Fortran</para>
|
---|
592 | <indexterm zone="ch-system-gcc libgomp">
|
---|
593 | <primary sortas="c-libgomp">libgomp</primary>
|
---|
594 | </indexterm>
|
---|
595 | </listitem>
|
---|
596 | </varlistentry>
|
---|
597 |
|
---|
598 | <varlistentry id="libhwasan">
|
---|
599 | <term><filename class="libraryfile">libhwasan</filename></term>
|
---|
600 | <listitem>
|
---|
601 | <para>The Hardware-assisted Address Sanitizer runtime library</para>
|
---|
602 | <indexterm zone="ch-system-gcc libhwasan">
|
---|
603 | <primary sortas="c-libhwasan">libhwasan</primary>
|
---|
604 | </indexterm>
|
---|
605 | </listitem>
|
---|
606 | </varlistentry>
|
---|
607 |
|
---|
608 | <varlistentry id="libitm">
|
---|
609 | <term><filename class="libraryfile">libitm</filename></term>
|
---|
610 | <listitem>
|
---|
611 | <para>The GNU transactional memory library</para>
|
---|
612 | <indexterm zone="ch-system-gcc libitm">
|
---|
613 | <primary sortas="c-libitm">libitm</primary>
|
---|
614 | </indexterm>
|
---|
615 | </listitem>
|
---|
616 | </varlistentry>
|
---|
617 |
|
---|
618 | <varlistentry id="liblsan">
|
---|
619 | <term><filename class="libraryfile">liblsan</filename></term>
|
---|
620 | <listitem>
|
---|
621 | <para>The Leak Sanitizer runtime library</para>
|
---|
622 | <indexterm zone="ch-system-gcc liblsan">
|
---|
623 | <primary sortas="c-liblsan">liblsan</primary>
|
---|
624 | </indexterm>
|
---|
625 | </listitem>
|
---|
626 | </varlistentry>
|
---|
627 |
|
---|
628 | <varlistentry id="liblto_plugin">
|
---|
629 | <term><filename class="libraryfile">liblto_plugin</filename></term>
|
---|
630 | <listitem>
|
---|
631 | <para>GCC's LTO plugin allows Binutils to process object files
|
---|
632 | produced by GCC with LTO enabled</para>
|
---|
633 | <indexterm zone="ch-system-gcc liblto_plugin">
|
---|
634 | <primary sortas="c-liblto_plugin">liblto_plugin</primary>
|
---|
635 | </indexterm>
|
---|
636 | </listitem>
|
---|
637 | </varlistentry>
|
---|
638 |
|
---|
639 | <varlistentry id="libquadmath">
|
---|
640 | <term><filename class="libraryfile">libquadmath</filename></term>
|
---|
641 | <listitem>
|
---|
642 | <para>GCC Quad Precision Math Library API</para>
|
---|
643 | <indexterm zone="ch-system-gcc libquadmath">
|
---|
644 | <primary sortas="c-libquadmath">libquadmath</primary>
|
---|
645 | </indexterm>
|
---|
646 | </listitem>
|
---|
647 | </varlistentry>
|
---|
648 |
|
---|
649 | <varlistentry id="libssp">
|
---|
650 | <term><filename class="libraryfile">libssp</filename></term>
|
---|
651 | <listitem>
|
---|
652 | <para>Contains routines supporting GCC's stack-smashing protection
|
---|
653 | functionality. Normally it is not used, because Glibc also provides
|
---|
654 | those routines.</para>
|
---|
655 | <indexterm zone="ch-system-gcc libssp">
|
---|
656 | <primary sortas="c-libssp">libssp</primary>
|
---|
657 | </indexterm>
|
---|
658 | </listitem>
|
---|
659 | </varlistentry>
|
---|
660 |
|
---|
661 | <varlistentry id="libstdc">
|
---|
662 | <term><filename class="libraryfile">libstdc++</filename></term>
|
---|
663 | <listitem>
|
---|
664 | <para>The standard C++ library</para>
|
---|
665 | <indexterm zone="ch-system-gcc libstdc">
|
---|
666 | <primary sortas="c-libstdc++">libstdc++</primary>
|
---|
667 | </indexterm>
|
---|
668 | </listitem>
|
---|
669 | </varlistentry>
|
---|
670 |
|
---|
671 | <varlistentry id="libstdcexp">
|
---|
672 | <term><filename class="libraryfile">libstdc++exp</filename></term>
|
---|
673 | <listitem>
|
---|
674 | <para>Experimental C++ Contracts library</para>
|
---|
675 | <indexterm zone="ch-system-gcc libstdcexp">
|
---|
676 | <primary sortas="c-libstdc++exp">libstdc++exp</primary>
|
---|
677 | </indexterm>
|
---|
678 | </listitem>
|
---|
679 | </varlistentry>
|
---|
680 |
|
---|
681 | <varlistentry id="libstdcfs">
|
---|
682 | <term><filename class="libraryfile">libstdc++fs</filename></term>
|
---|
683 | <listitem>
|
---|
684 | <para>ISO/IEC TS 18822:2015 Filesystem library</para>
|
---|
685 | <indexterm zone="ch-system-gcc libstdcfs">
|
---|
686 | <primary sortas="c-libstdc++fs">libstdc++fs</primary>
|
---|
687 | </indexterm>
|
---|
688 | </listitem>
|
---|
689 | </varlistentry>
|
---|
690 |
|
---|
691 | <varlistentry id="libsupc">
|
---|
692 | <term><filename class="libraryfile">libsupc++</filename></term>
|
---|
693 | <listitem>
|
---|
694 | <para>Provides supporting routines for the C++ programming
|
---|
695 | language</para>
|
---|
696 | <indexterm zone="ch-system-gcc libsupc">
|
---|
697 | <primary sortas="c-libsupc++">libsupc++</primary>
|
---|
698 | </indexterm>
|
---|
699 | </listitem>
|
---|
700 | </varlistentry>
|
---|
701 |
|
---|
702 | <varlistentry id="libtsan">
|
---|
703 | <term><filename class="libraryfile">libtsan</filename></term>
|
---|
704 | <listitem>
|
---|
705 | <para>The Thread Sanitizer runtime library</para>
|
---|
706 | <indexterm zone="ch-system-gcc libtsan">
|
---|
707 | <primary sortas="c-libtsan">libtsan</primary>
|
---|
708 | </indexterm>
|
---|
709 | </listitem>
|
---|
710 | </varlistentry>
|
---|
711 |
|
---|
712 | <varlistentry id="libubsan">
|
---|
713 | <term><filename class="libraryfile">libubsan</filename></term>
|
---|
714 | <listitem>
|
---|
715 | <para>The Undefined Behavior Sanitizer runtime library</para>
|
---|
716 | <indexterm zone="ch-system-gcc libubsan">
|
---|
717 | <primary sortas="c-libubsan">libubsan</primary>
|
---|
718 | </indexterm>
|
---|
719 | </listitem>
|
---|
720 | </varlistentry>
|
---|
721 |
|
---|
722 | </variablelist>
|
---|
723 |
|
---|
724 | </sect2>
|
---|
725 |
|
---|
726 | </sect1>
|
---|