| 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 | <para>If building on aarch64, change the default directory name for 64-bit
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| 53 | libraries to <quote>lib</quote>:</para>
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| 54 |
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| 55 | <screen><userinput remap="pre">case $(uname -m) in
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| 56 | aarch64)
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| 57 | sed -e '/mabi.lp64=/s/lib64/lib/' \
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| 58 | -i.orig gcc/config/aarch64/t-aarch64-linux
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| 59 | ;;
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| 60 | esac</userinput></screen>
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| 61 |
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| 62 | <para>The GCC documentation recommends building GCC in a dedicated build directory:</para>
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| 63 |
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| 64 | <screen><userinput remap="pre">mkdir -v build
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| 65 | cd build</userinput></screen>
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| 66 |
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| 67 | <para>Prepare GCC for compilation:</para>
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| 68 |
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| 69 | <screen><userinput remap="configure">../configure --prefix=/usr \
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| 70 | LD=ld \
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| 71 | --enable-languages=c,c++ \
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| 72 | --disable-multilib \
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| 73 | --disable-bootstrap \
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| 74 | --with-system-zlib</userinput></screen>
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| 75 |
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| 76 | <para>Note that for other programming languages there are some prerequisites that
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| 77 | are not yet available. See the
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| 78 | <ulink url="&blfs-book;general/gcc.html">BLFS Book GCC page</ulink>
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| 79 | for instructions on how to build all of GCC's supported languages.</para>
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| 80 |
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| 81 | <variablelist>
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| 82 | <title>The meaning of the new configure parameters:</title>
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| 83 |
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| 84 | <varlistentry>
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| 85 | <term><parameter>LD=ld</parameter></term>
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| 86 | <listitem>
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| 87 | <para>This parameter makes the configure script use the ld installed
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| 88 | by the binutils built earlier in this chapter, rather than
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| 89 | the cross-built version which would otherwise be used.</para>
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| 90 | </listitem>
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| 91 | </varlistentry>
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| 92 |
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| 93 | <varlistentry>
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| 94 | <term><parameter>--with-system-zlib</parameter></term>
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| 95 | <listitem>
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| 96 | <para>This switch tells GCC to link to the system installed copy of
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| 97 | the zlib library, rather than its own internal copy.</para>
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| 98 | </listitem>
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| 99 | </varlistentry>
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| 100 | </variablelist>
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| 101 |
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| 102 | <para>Compile the package:</para>
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| 103 |
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| 104 | <screen><userinput remap="make">make</userinput></screen>
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| 105 |
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| 106 | <important>
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| 107 | <para>In this section, the test suite for GCC is considered
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| 108 | important, but it takes a long time. First time builders are
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| 109 | encouraged to not skip it. The time to run the tests can be
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| 110 | reduced significantly by adding -jx to the make command below
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| 111 | where x is the number of cores on your system.</para>
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| 112 | </important>
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| 113 |
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| 114 | <para>One set of tests in the GCC test suite is known to exhaust the default
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| 115 | stack, so increase the stack size prior to running the tests:</para>
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| 116 |
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| 117 | <screen><userinput remap="test">ulimit -s 32768</userinput></screen>
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| 118 |
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| 119 | <para>Test the results as a non-privileged user, but do not stop at errors:</para>
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| 120 |
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| 121 | <screen><userinput remap="test">chown -Rv tester .
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| 122 | su tester -c "PATH=$PATH make -k check"</userinput></screen>
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| 123 |
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| 124 | <para>To receive a summary of the test suite results, run:</para>
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| 125 |
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| 126 | <screen><userinput remap="test">../contrib/test_summary</userinput></screen>
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| 127 |
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| 128 | <para>For only the summaries, pipe the output through
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| 129 | <userinput>grep -A7 Summ</userinput>.</para>
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| 130 |
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| 131 | <para>Results can be compared with those located at <ulink
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| 132 | url="&test-results;"/> and
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| 133 | <ulink url="https://gcc.gnu.org/ml/gcc-testresults/"/>.</para>
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| 134 |
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| 135 | <!-- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101081 -->
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| 136 | <para>Eight tests related to analyzer are known to fail.</para>
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| 137 |
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| 138 | <!-- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101751 -->
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| 139 | <para>One test named <filename>asan_test.C</filename> is known to
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| 140 | fail.</para>
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| 141 |
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| 142 | <!-- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100117 -->
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| 143 | <para>In libstdc++, one test named <filename>49745.cc</filename> is
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| 144 | known to fail because the header dependencies in glibc have
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| 145 | changed.</para>
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| 146 |
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| 147 | <para>In libstdc++, one numpunct test and six tests related to get_time are
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| 148 | known to fail. These are all because the locale definitions in glibc have
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| 149 | changed but libstdc++ does not currently support those changes.</para>
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| 150 |
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| 151 | <para>A few unexpected failures cannot always be avoided. The GCC developers
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| 152 | are usually aware of these issues, but have not resolved them yet.
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| 153 | Unless the test results are vastly different from those at the above URL,
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| 154 | it is safe to continue.</para>
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| 155 |
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| 156 | <!--note><para>
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| 157 | On some combinations of kernel configuration and AMD processors
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| 158 | there may be more than 1100 failures in the gcc.target/i386/mpx
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| 159 | tests (which are designed to test the MPX option on recent
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| 160 | Intel processors). These can safely be ignored on AMD
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| 161 | processors. These tests will also fail on Intel processors if MPX support
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| 162 | is not enabled in the kernel even though it is present on the CPU.
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| 163 | </para></note-->
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| 164 |
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| 165 | <!-- PR 91085, will be fixed in GCC 12. -->
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| 166 | <para>Install the package and remove an unneeded directory:</para>
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| 167 |
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| 168 | <screen><userinput remap="install">make install
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| 169 | rm -rf /usr/lib/gcc/$(gcc -dumpmachine)/&gcc-version;/include-fixed/bits/</userinput></screen>
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| 170 |
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| 171 | <para>The GCC build directory is owned by <systemitem class="username">
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| 172 | tester</systemitem> now and the ownership of the installed header
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| 173 | directory (and its content) will be incorrect. Change the ownership to
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| 174 | <systemitem class="username">root</systemitem> user and group:</para>
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| 175 |
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| 176 | <screen><userinput remap="install">chown -v -R root:root \
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| 177 | /usr/lib/gcc/*linux-gnu/&gcc-version;/include{,-fixed}</userinput></screen>
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| 178 |
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| 179 | <para>Create a symlink required by the <ulink
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| 180 | url="https://refspecs.linuxfoundation.org/FHS_3.0/fhs/ch03s09.html">FHS</ulink>
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| 181 | for "historical" reasons.</para>
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| 182 |
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| 183 | <screen><userinput remap="install">ln -svr /usr/bin/cpp /usr/lib</userinput></screen>
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| 184 | <!-- already done earlier
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| 185 | <para>Many packages use the name <command>cc</command> to call the C
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| 186 | compiler. To satisfy those packages, create a symlink:</para>
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| 187 |
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| 188 | <screen><userinput remap="install">ln -sv gcc /usr/bin/cc</userinput></screen>
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| 189 | -->
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| 190 | <para>Add a compatibility symlink to enable building programs with
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| 191 | Link Time Optimization (LTO):</para>
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| 192 |
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| 193 | <screen><userinput remap="install">ln -sfv ../../libexec/gcc/$(gcc -dumpmachine)/&gcc-version;/liblto_plugin.so \
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| 194 | /usr/lib/bfd-plugins/</userinput></screen>
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| 195 |
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| 196 | <para>Now that our final toolchain is in place, it is important to again ensure
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| 197 | that compiling and linking will work as expected. We do this by performing
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| 198 | some sanity checks:</para>
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| 199 |
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| 200 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 201 | href="adjusting.xml"
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| 202 | xpointer="xpointer(//*[@os='a'])"/>
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| 203 |
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| 204 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 205 | href="adjusting.xml"
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| 206 | xpointer="xpointer(//*[@os='b'])"/>
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| 207 |
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| 208 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 209 | href="adjusting.xml"
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| 210 | xpointer="xpointer(//*[@os='c'])"/>
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| 211 |
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| 212 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 213 | href="adjusting.xml"
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| 214 | xpointer="xpointer(//*[@os='d'])"/>
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| 215 |
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| 216 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 217 | href="adjusting.xml"
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| 218 | xpointer="xpointer(//*[@os='e'])"/>
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| 219 |
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| 220 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 221 | href="adjusting.xml"
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| 222 | xpointer="xpointer(//*[@os='f'])"/>
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| 223 |
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| 224 | <screen><computeroutput>/usr/lib/gcc/aarch64-unknown-linux-gnu/&gcc-version;/../../../../lib/crt1.o succeeded
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| 225 | /usr/lib/gcc/aarch64-unknown-linux-gnu/&gcc-version;/../../../../lib/crti.o succeeded
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| 226 | /usr/lib/gcc/aarch64-unknown-linux-gnu/&gcc-version;/../../../../lib/crtn.o succeeded</computeroutput></screen>
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| 227 |
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| 228 | <para>Depending on your machine architecture, the above may differ slightly.
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| 229 | The difference will be the name of the directory
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| 230 | after <filename class="directory">/usr/lib/gcc</filename>. The important
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| 231 | thing to look for here is that <command>gcc</command> has found all three
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| 232 | <filename>crt*.o</filename> files under the
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| 233 | <filename class="directory">/usr/lib</filename> directory.</para>
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| 234 |
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| 235 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 236 | href="adjusting.xml"
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| 237 | xpointer="xpointer(//*[@os='g'])"/>
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| 238 |
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| 239 | <screen><userinput>grep -B4 '^ /usr/include' dummy.log</userinput></screen>
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| 240 |
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| 241 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 242 | href="adjusting.xml"
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| 243 | xpointer="xpointer(//*[@os='h'])"/>
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| 244 |
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| 245 | <screen><computeroutput>#include <...> search starts here:
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| 246 | /usr/lib/gcc/aarch-64-unknown-linux-gnu/&gcc-version;/include
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| 247 | /usr/local/include
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| 248 | /usr/lib/gcc/aarch64-unknown-linux-gnu/&gcc-version;/include-fixed
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| 249 | /usr/include</computeroutput></screen>
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| 250 |
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| 251 | <para>Again, the directory named after your target triplet may be
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| 252 | different than the above, depending on your system architecture.</para>
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| 253 |
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| 254 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 255 | href="adjusting.xml"
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| 256 | xpointer="xpointer(//*[@os='i'])"/>
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| 257 |
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| 258 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 259 | href="adjusting.xml"
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| 260 | xpointer="xpointer(//*[@os='j'])"/>
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| 261 |
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| 262 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 263 | href="adjusting.xml"
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| 264 | xpointer="xpointer(//*[@os='k'])"/>
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| 265 |
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| 266 | <screen><computeroutput>SEARCH_DIR("/usr/aarch64-unknown-linux-gnu/lib64")
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| 267 | SEARCH_DIR("/usr/local/lib64")
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| 268 | SEARCH_DIR("/lib64")
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| 269 | SEARCH_DIR("/usr/lib64")
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| 270 | SEARCH_DIR("/usr/aarch64-unknown-linux-gnu/lib")
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| 271 | SEARCH_DIR("/usr/local/lib")
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| 272 | SEARCH_DIR("/lib")
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| 273 | SEARCH_DIR("/usr/lib");</computeroutput></screen>
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| 274 |
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| 275 | <para>A 32-bit system may see a few different directories. For example, here
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| 276 | is the output from a 32bit ARM machine:</para>
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| 277 |
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| 278 | <screen><computeroutput>SEARCH_DIR("/usr/armv6l-unknown-linux-gnueabihf/lib")
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| 279 | SEARCH_DIR("/usr/local/lib")
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| 280 | SEARCH_DIR("/lib")
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| 281 | SEARCH_DIR("/usr/lib");</computeroutput></screen>
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| 282 |
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| 283 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 284 | href="adjusting.xml"
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| 285 | xpointer="xpointer(//*[@os='l'])"/>
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| 286 |
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| 287 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 288 | href="adjusting.xml"
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| 289 | xpointer="xpointer(//*[@os='m'])"/>
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| 290 |
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| 291 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 292 | href="adjusting.xml"
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| 293 | xpointer="xpointer(//*[@os='n'])"/>
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| 294 |
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| 295 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 296 | href="adjusting.xml"
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| 297 | xpointer="xpointer(//*[@os='o'])"/>
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| 298 |
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| 299 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 300 | href="adjusting.xml"
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| 301 | xpointer="xpointer(//*[@os='p'])"/>
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| 302 |
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| 303 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 304 | href="adjusting.xml"
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| 305 | xpointer="xpointer(//*[@os='q'])"/>
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| 306 |
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| 307 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 308 | href="adjusting.xml"
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| 309 | xpointer="xpointer(//*[@os='r'])"/>
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| 310 |
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| 311 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 312 | href="adjusting.xml"
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| 313 | xpointer="xpointer(//*[@os='s'])"/>
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| 314 |
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| 315 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 316 | href="adjusting.xml"
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| 317 | xpointer="xpointer(//*[@os='t'])"/>
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| 318 |
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| 319 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 320 | href="adjusting.xml"
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| 321 | xpointer="xpointer(//*[@os='u'])"/>
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| 322 |
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| 323 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 324 | href="adjusting.xml"
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| 325 | xpointer="xpointer(//*[@os='v'])"/>
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| 326 |
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| 327 | <para>Finally, move a misplaced file:</para>
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| 328 |
|
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| 329 | <screen><userinput remap="install">mkdir -pv /usr/share/gdb/auto-load/usr/lib
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| 330 | mv -v /usr/lib/*gdb.py /usr/share/gdb/auto-load/usr/lib</userinput></screen>
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| 331 |
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| 332 | </sect2>
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| 333 |
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| 334 | <sect2 id="contents-gcc" role="content">
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| 335 | <title>Contents of GCC</title>
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| 336 |
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| 337 | <segmentedlist>
|
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| 338 | <segtitle>Installed programs</segtitle>
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| 339 | <segtitle>Installed libraries</segtitle>
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|---|
| 340 | <segtitle>Installed directories</segtitle>
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| 341 |
|
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| 342 | <seglistitem>
|
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| 343 | <seg>c++, cc (link to gcc), cpp, g++, gcc,
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| 344 | gcc-ar, gcc-nm, gcc-ranlib, gcov, gcov-dump, gcov-tool,
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| 345 | and lto-dump</seg>
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| 346 |
|
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| 347 | <seg>libasan.{a,so}, libatomic.{a,so}, libcc1.so, libgcc.a, libgcc_eh.a,
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| 348 | libgcc_s.so, libgcov.a, libgomp.{a,so}, libitm.{a,so},
|
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| 349 | liblsan.{a,so}, liblto_plugin.so,
|
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| 350 | libssp.{a,so}, libssp_nonshared.a,
|
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| 351 | libstdc++.{a,so}, libstdc++fs.a, libsupc++.a, libtsan.{a,so},
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| 352 | and libubsan.{a,so}</seg>
|
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| 353 |
|
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| 354 | <seg>/usr/include/c++, /usr/lib/gcc, /usr/libexec/gcc, and
|
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| 355 | /usr/share/gcc-&gcc-version;</seg>
|
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| 356 | </seglistitem>
|
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| 357 | </segmentedlist>
|
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| 358 |
|
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| 359 | <variablelist>
|
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| 360 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 361 | <?dbfo list-presentation="list"?>
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| 362 | <?dbhtml list-presentation="table"?>
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| 363 |
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| 364 | <varlistentry id="c">
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| 365 | <term><command>c++</command></term>
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| 366 | <listitem>
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| 367 | <para>The C++ compiler</para>
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| 368 | <indexterm zone="ch-system-gcc c">
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| 369 | <primary sortas="b-c++">c++</primary>
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| 370 | </indexterm>
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| 371 | </listitem>
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| 372 | </varlistentry>
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| 373 |
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| 374 | <varlistentry id="cc">
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| 375 | <term><command>cc</command></term>
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| 376 | <listitem>
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| 377 | <para>The C compiler</para>
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| 378 | <indexterm zone="ch-system-gcc cc">
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| 379 | <primary sortas="b-cc">cc</primary>
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| 380 | </indexterm>
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| 381 | </listitem>
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| 382 | </varlistentry>
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| 383 |
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| 384 | <varlistentry id="cpp">
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| 385 | <term><command>cpp</command></term>
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| 386 | <listitem>
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| 387 | <para>The C preprocessor; it is used by the compiler to expand the
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| 388 | #include, #define, and similar statements in the source files</para>
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| 389 | <indexterm zone="ch-system-gcc cpp">
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| 390 | <primary sortas="b-cpp">cpp</primary>
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| 391 | </indexterm>
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| 392 | </listitem>
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| 393 | </varlistentry>
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| 394 |
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| 395 | <varlistentry id="g">
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| 396 | <term><command>g++</command></term>
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| 397 | <listitem>
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| 398 | <para>The C++ compiler</para>
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| 399 | <indexterm zone="ch-system-gcc g">
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| 400 | <primary sortas="b-g++">g++</primary>
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| 401 | </indexterm>
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| 402 | </listitem>
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| 403 | </varlistentry>
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| 404 |
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| 405 | <varlistentry id="gcc">
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| 406 | <term><command>gcc</command></term>
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| 407 | <listitem>
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| 408 | <para>The C compiler</para>
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| 409 | <indexterm zone="ch-system-gcc gcc">
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| 410 | <primary sortas="b-gcc">gcc</primary>
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| 411 | </indexterm>
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| 412 | </listitem>
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| 413 | </varlistentry>
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| 414 |
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| 415 | <varlistentry id="gcc-ar">
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| 416 | <term><command>gcc-ar</command></term>
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| 417 | <listitem>
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| 418 | <para>A wrapper around <command>ar</command> that adds a
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| 419 | plugin to the command line. This program is only used
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| 420 | to add "link time optimization" and is not useful with the
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| 421 | default build options</para>
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| 422 | <indexterm zone="ch-system-gcc gcc-ar">
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| 423 | <primary sortas="b-gcc-ar">gc-ar</primary>
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| 424 | </indexterm>
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| 425 | </listitem>
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| 426 | </varlistentry>
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| 427 |
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| 428 | <varlistentry id="gcc-nm">
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| 429 | <term><command>gcc-nm</command></term>
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| 430 | <listitem>
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| 431 | <para>A wrapper around <command>nm</command> that adds a
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| 432 | plugin to the command line. This program is only used
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| 433 | to add "link time optimization" and is not useful with the
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| 434 | default build options</para>
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| 435 | <indexterm zone="ch-system-gcc gcc-nm">
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| 436 | <primary sortas="b-gcc-nm">gc-nm</primary>
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| 437 | </indexterm>
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| 438 | </listitem>
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| 439 | </varlistentry>
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| 440 |
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| 441 | <varlistentry id="gcc-ranlib">
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| 442 | <term><command>gcc-ranlib</command></term>
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| 443 | <listitem>
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| 444 | <para>A wrapper around <command>ranlib</command> that adds a
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| 445 | plugin to the command line. This program is only used
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| 446 | to add "link time optimization" and is not useful with the
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| 447 | default build options</para>
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| 448 | <indexterm zone="ch-system-gcc gcc-ranlib">
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| 449 | <primary sortas="b-gcc-ranlib">gc-ranlib</primary>
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| 450 | </indexterm>
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| 451 | </listitem>
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| 452 | </varlistentry>
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| 453 |
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| 454 | <varlistentry id="gcov">
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| 455 | <term><command>gcov</command></term>
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| 456 | <listitem>
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| 457 | <para>A coverage testing tool; it is used to analyze programs to
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| 458 | determine where optimizations will have the most effect</para>
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| 459 | <indexterm zone="ch-system-gcc gcov">
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| 460 | <primary sortas="b-gcov">gcov</primary>
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| 461 | </indexterm>
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| 462 | </listitem>
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| 463 | </varlistentry>
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| 464 |
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| 465 | <varlistentry id="gcov-dump">
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| 466 | <term><command>gcov-dump</command></term>
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| 467 | <listitem>
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| 468 | <para>Offline gcda and gcno profile dump tool</para>
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| 469 | <indexterm zone="ch-system-gcc gcov-dump">
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| 470 | <primary sortas="b-gcov-dump">gcov-dump</primary>
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| 471 | </indexterm>
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| 472 | </listitem>
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| 473 | </varlistentry>
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| 474 |
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| 475 | <varlistentry id="gcov-tool">
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| 476 | <term><command>gcov-tool</command></term>
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| 477 | <listitem>
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| 478 | <para>Offline gcda profile processing tool</para>
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| 479 | <indexterm zone="ch-system-gcc gcov-tool">
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| 480 | <primary sortas="b-gcov-tool">gcov-tool</primary>
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| 481 | </indexterm>
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| 482 | </listitem>
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| 483 | </varlistentry>
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| 484 |
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| 485 | <varlistentry id="lto-dump">
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| 486 | <term><command>lto-dump</command></term>
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| 487 | <listitem>
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| 488 | <para>Tool for dumping object files produced by GCC with LTO
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| 489 | enabled</para>
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| 490 | <indexterm zone="ch-system-gcc lto-dump">
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| 491 | <primary sortas="b-lto-dump">lto-dump</primary>
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| 492 | </indexterm>
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| 493 | </listitem>
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| 494 | </varlistentry>
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| 495 |
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| 496 | <varlistentry id="libasan">
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| 497 | <term><filename class="libraryfile">libasan</filename></term>
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| 498 | <listitem>
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| 499 | <para>The Address Sanitizer runtime library</para>
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| 500 | <indexterm zone="ch-system-gcc libasan">
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| 501 | <primary sortas="b-libasan">libasan</primary>
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| 502 | </indexterm>
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| 503 | </listitem>
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| 504 | </varlistentry>
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| 505 |
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| 506 | <varlistentry id="libatomic">
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| 507 | <term><filename class="libraryfile">libatomic</filename></term>
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| 508 | <listitem>
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| 509 | <para>GCC atomic built-in runtime library</para>
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| 510 | <indexterm zone="ch-system-gcc libatomic">
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| 511 | <primary sortas="b-libatomic">libatomic</primary>
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| 512 | </indexterm>
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| 513 | </listitem>
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| 514 | </varlistentry>
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| 515 |
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| 516 | <varlistentry id="libcc1">
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| 517 | <term><filename class="libraryfile">libcc1</filename></term>
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| 518 | <listitem>
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| 519 | <para>The C preprocessing library</para>
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| 520 | <indexterm zone="ch-system-gcc libcc1">
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| 521 | <primary sortas="b-libcc1">libcc1</primary>
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| 522 | </indexterm>
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| 523 | </listitem>
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| 524 | </varlistentry>
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| 525 |
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| 526 | <varlistentry id="libgcc">
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| 527 | <term><filename class="libraryfile">libgcc</filename></term>
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| 528 | <listitem>
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| 529 | <para>Contains run-time support for <command>gcc</command></para>
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| 530 | <indexterm zone="ch-system-gcc libgcc">
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| 531 | <primary sortas="c-libgcc">libgcc</primary>
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| 532 | </indexterm>
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| 533 | </listitem>
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| 534 | </varlistentry>
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| 535 |
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| 536 | <varlistentry id="libgcov">
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| 537 | <term><filename class="libraryfile">libgcov</filename></term>
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| 538 | <listitem>
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| 539 | <para>This library is linked in to a program when GCC is instructed
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| 540 | to enable profiling</para>
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| 541 | <indexterm zone="ch-system-gcc libgcov">
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| 542 | <primary sortas="c-libgcov">libgcov</primary>
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| 543 | </indexterm>
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| 544 | </listitem>
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| 545 | </varlistentry>
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| 546 |
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| 547 | <varlistentry id="libgomp">
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| 548 | <term><filename class="libraryfile">libgomp</filename></term>
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| 549 | <listitem>
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| 550 | <para>GNU implementation of the OpenMP API for multi-platform
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| 551 | shared-memory parallel programming in C/C++ and Fortran</para>
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| 552 | <indexterm zone="ch-system-gcc libgomp">
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| 553 | <primary sortas="c-libgomp">libgomp</primary>
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| 554 | </indexterm>
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| 555 | </listitem>
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| 556 | </varlistentry>
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| 557 |
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| 558 | <varlistentry id="libitm">
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| 559 | <term><filename class="libraryfile">libitm</filename></term>
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| 560 | <listitem>
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| 561 | <para>The GNU transactional memory library</para>
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| 562 | <indexterm zone="ch-system-gcc libitm">
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| 563 | <primary sortas="c-libitm">libitm</primary>
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| 564 | </indexterm>
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| 565 | </listitem>
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| 566 | </varlistentry>
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| 567 |
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| 568 | <varlistentry id="liblsan">
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| 569 | <term><filename class="libraryfile">liblsan</filename></term>
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| 570 | <listitem>
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| 571 | <para>The Leak Sanitizer runtime library</para>
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| 572 | <indexterm zone="ch-system-gcc liblsan">
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| 573 | <primary sortas="c-liblsan">liblsan</primary>
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| 574 | </indexterm>
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| 575 | </listitem>
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| 576 | </varlistentry>
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| 577 |
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| 578 | <varlistentry id="liblto_plugin">
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| 579 | <term><filename class="libraryfile">liblto_plugin</filename></term>
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| 580 | <listitem>
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| 581 | <para>GCC's LTO plugin allows binutils to process object files
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| 582 | produced by GCC with LTO enabled</para>
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| 583 | <indexterm zone="ch-system-gcc liblto_plugin">
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| 584 | <primary sortas="c-liblto_plugin">liblto_plugin</primary>
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| 585 | </indexterm>
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| 586 | </listitem>
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| 587 | </varlistentry>
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| 588 |
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| 589 | <varlistentry id="libquadmath">
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| 590 | <term><filename class="libraryfile">libquadmath</filename></term>
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| 591 | <listitem>
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| 592 | <para>GCC Quad Precision Math Library API</para>
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| 593 | <indexterm zone="ch-system-gcc libquadmath">
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| 594 | <primary sortas="c-libquadmath">libquadmath</primary>
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| 595 | </indexterm>
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| 596 | </listitem>
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| 597 | </varlistentry>
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| 598 |
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| 599 | <varlistentry id="libssp">
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| 600 | <term><filename class="libraryfile">libssp</filename></term>
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| 601 | <listitem>
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| 602 | <para>Contains routines supporting GCC's stack-smashing protection
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| 603 | functionality</para>
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| 604 | <indexterm zone="ch-system-gcc libssp">
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| 605 | <primary sortas="c-libssp">libssp</primary>
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| 606 | </indexterm>
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| 607 | </listitem>
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| 608 | </varlistentry>
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| 609 |
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| 610 | <varlistentry id="libstdc">
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| 611 | <term><filename class="libraryfile">libstdc++</filename></term>
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| 612 | <listitem>
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| 613 | <para>The standard C++ library</para>
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| 614 | <indexterm zone="ch-system-gcc libstdc">
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| 615 | <primary sortas="c-libstdc++">libstdc++</primary>
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| 616 | </indexterm>
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| 617 | </listitem>
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| 618 | </varlistentry>
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| 619 |
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| 620 | <varlistentry id="libstdcfs">
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| 621 | <term><filename class="libraryfile">libstdc++fs</filename></term>
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| 622 | <listitem>
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| 623 | <para>ISO/IEC TS 18822:2015 Filesystem library</para>
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| 624 | <indexterm zone="ch-system-gcc libstdcfs">
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| 625 | <primary sortas="c-libstdc++fs">libstdc++fs</primary>
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| 626 | </indexterm>
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| 627 | </listitem>
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| 628 | </varlistentry>
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| 629 |
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| 630 | <varlistentry id="libsupc">
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| 631 | <term><filename class="libraryfile">libsupc++</filename></term>
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| 632 | <listitem>
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| 633 | <para>Provides supporting routines for the C++ programming
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|---|
| 634 | language</para>
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| 635 | <indexterm zone="ch-system-gcc libsupc">
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| 636 | <primary sortas="c-libsupc++">libsupc++</primary>
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| 637 | </indexterm>
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| 638 | </listitem>
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| 639 | </varlistentry>
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| 640 |
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| 641 | <varlistentry id="libtsan">
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| 642 | <term><filename class="libraryfile">libtsan</filename></term>
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| 643 | <listitem>
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| 644 | <para>The Thread Sanitizer runtime library</para>
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|---|
| 645 | <indexterm zone="ch-system-gcc libtsan">
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| 646 | <primary sortas="c-libtsan">libtsan</primary>
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| 647 | </indexterm>
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| 648 | </listitem>
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| 649 | </varlistentry>
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| 650 |
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| 651 | <varlistentry id="libubsan">
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| 652 | <term><filename class="libraryfile">libubsan</filename></term>
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| 653 | <listitem>
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| 654 | <para>The Undefined Behavior Sanitizer runtime library</para>
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| 655 | <indexterm zone="ch-system-gcc libubsan">
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| 656 | <primary sortas="c-libubsan">libubsan</primary>
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| 657 | </indexterm>
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| 658 | </listitem>
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| 659 | </varlistentry>
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| 660 |
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| 661 | </variablelist>
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| 662 |
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| 663 | </sect2>
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| 664 |
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| 665 | </sect1>
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