| 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-ch6-sbu;</seg>
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| 35 | <seg>&gcc-ch6-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>As in Chapter 5, fix a problem identified upstream:</para>
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| 45 |
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| 46 | <screen><userinput remap="pre">sed -i 's/if \((code.*))\)/if (\1 \&\& \!DEBUG_INSN_P (insn))/' gcc/sched-deps.c</userinput></screen>
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| 47 |
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| 48 |
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| 49 | <para>First fix a problem identified upstream that causes some
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| 50 | programs to fail:</para>
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| 51 |
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| 52 | <screen><userinput remap="pre">patch -Np1 -i ../&gcc-upstream-patch;</userinput></screen>
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| 53 |
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| 54 | <!--
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| 55 | <para>As in <xref linkend="ch-tools-gcc-pass2"/>, apply the following
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| 56 | <command>sed</command> to force the build to use the
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| 57 | <option>-fomit-frame-pointer</option> compiler flag in order to ensure
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| 58 | consistent compiler builds:</para>
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| 59 |
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| 60 | <screen><userinput remap="pre">case `uname -m` in
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| 61 | i?86) sed -i 's/^T_CFLAGS =$/& -fomit-frame-pointer/' gcc/Makefile.in ;;
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| 62 | esac</userinput></screen>
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| 63 | -->
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| 64 | <para>The GCC documentation recommends building GCC outside of the source
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| 65 | directory in a dedicated build directory:</para>
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| 66 |
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| 67 | <screen><userinput remap="pre">mkdir -v ../gcc-build
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| 68 | cd ../gcc-build</userinput></screen>
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| 69 |
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| 70 | <para>Prepare GCC for compilation:</para>
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| 71 |
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| 72 | <screen><userinput remap="configure">SED=sed \
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| 73 | ../gcc-&gcc-version;/configure \
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| 74 | --prefix=/usr \
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| 75 | --enable-languages=c,c++ \
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| 76 | --disable-multilib \
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| 77 | --disable-bootstrap \
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| 78 | --with-system-zlib</userinput></screen>
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| 79 |
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| 80 | <para>Note that for other languages, there are some prerequisites that
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| 81 | are not yet available. See the
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| 82 | <ulink url="&blfs-root;view/&short-version;/general/gcc.html">BLFS Book</ulink>
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| 83 | for instructions on how to build all of GCC's supported languages.</para>
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| 84 |
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| 85 | <variablelist>
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| 86 | <title>The meaning of the new configure option:</title>
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| 87 |
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| 88 | <varlistentry>
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| 89 | <term><envar>SED=sed</envar></term>
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| 90 | <listitem>
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| 91 | <para>Setting this environment variable prevents a hard-coded
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| 92 | path to /tools/bin/sed.</para>
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| 93 | </listitem>
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| 94 | </varlistentry>
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| 95 |
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| 96 | <varlistentry>
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| 97 | <term><parameter>--with-system-zlib</parameter></term>
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| 98 | <listitem>
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| 99 | <para>This switch tells GCC to link to the system installed copy of
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| 100 | the Zlib library, rather than its own internal copy.</para>
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| 101 | </listitem>
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| 102 | </varlistentry>
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| 103 | </variablelist>
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| 104 |
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| 105 | <para>Compile the package:</para>
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| 106 |
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| 107 | <screen><userinput remap="make">make</userinput></screen>
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| 108 |
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| 109 | <important>
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| 110 | <para>In this section, the test suite for GCC is considered
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| 111 | critical. Do not skip it under any circumstance.</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 stack,
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| 115 | 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, but do not stop at errors:</para>
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| 120 |
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| 121 | <screen><userinput remap="test">make -k check</userinput></screen>
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| 122 |
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| 123 | <para>To receive a summary of the test suite results, run:</para>
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| 124 |
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| 125 | <screen><userinput remap="test">../gcc-&gcc-version;/contrib/test_summary</userinput></screen>
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| 126 |
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| 127 | <para>For only the summaries, pipe the output through
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| 128 | <userinput>grep -A7 Summ</userinput>.</para>
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| 129 |
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| 130 | <para>Results can be compared with those located at <ulink
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| 131 | url="&test-results;"/> and <ulink url="http://gcc.gnu.org/ml/gcc-testresults/"/>.</para>
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| 132 |
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| 133 | <para>A few unexpected failures cannot always be avoided. The GCC developers
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| 134 | are usually aware of these issues, but have not resolved them yet. <!-- In
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| 135 | particular, the <filename class="libraryfile">libmudflap</filename> tests
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| 136 | are known to be particularly problematic as a result of a bug in GCC
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| 137 | (<ulink url="http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20003"/>). -->
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| 138 | Unless the test results are vastly different from those at the above URL,
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| 139 | it is safe to continue.</para>
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| 140 |
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| 141 | <para>Install the package:</para>
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| 142 |
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| 143 | <screen><userinput remap="install">make install</userinput></screen>
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| 144 |
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| 145 | <para>Some packages expect the C preprocessor to be installed in the
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| 146 | <filename class="directory">/lib</filename> directory.
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| 147 | To support those packages, create this symlink:</para>
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| 148 |
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| 149 | <screen><userinput remap="install">ln -sv ../usr/bin/cpp /lib</userinput></screen>
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| 150 |
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| 151 | <para>Many packages use the name <command>cc</command> to call the C
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| 152 | compiler. To satisfy those packages, create a symlink:</para>
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| 153 |
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| 154 | <screen><userinput remap="install">ln -sv gcc /usr/bin/cc</userinput></screen>
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| 155 |
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| 156 | <para>Add a compatibility symlink to enable building programs with
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| 157 | Link Time Optimization (LTO):</para>
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| 158 |
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| 159 | <screen><userinput remap="install">install -v -dm755 /usr/lib/bfd-plugins
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| 160 | ln -sfv ../../libexec/gcc/$(gcc -dumpmachine)/&gcc-version;/liblto_plugin.so /usr/lib/bfd-plugins/</userinput></screen>
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| 161 |
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| 162 | <para>Now that our final toolchain is in place, it is important to again ensure
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| 163 | that compiling and linking will work as expected. We do this by performing
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| 164 | the same sanity checks as we did earlier in the chapter:</para>
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| 165 |
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| 166 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 167 | href="adjusting.xml"
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| 168 | xpointer="xpointer(//*[@os='a'])"/>
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| 169 |
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| 170 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 171 | href="adjusting.xml"
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| 172 | xpointer="xpointer(//*[@os='b'])"/>
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| 173 |
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| 174 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 175 | href="adjusting.xml"
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| 176 | xpointer="xpointer(//*[@os='c'])"/>
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| 177 |
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| 178 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 179 | href="adjusting.xml"
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| 180 | xpointer="xpointer(//*[@os='d'])"/>
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| 181 |
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| 182 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 183 | href="adjusting.xml"
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| 184 | xpointer="xpointer(//*[@os='e'])"/>
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| 185 |
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| 186 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 187 | href="adjusting.xml"
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| 188 | xpointer="xpointer(//*[@os='f'])"/>
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| 189 |
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| 190 | <screen><computeroutput>/usr/lib/gcc/i686-pc-linux-gnu/&gcc-version;/../../../crt1.o succeeded
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| 191 | /usr/lib/gcc/i686-pc-linux-gnu/&gcc-version;/../../../crti.o succeeded
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| 192 | /usr/lib/gcc/i686-pc-linux-gnu/&gcc-version;/../../../crtn.o succeeded</computeroutput></screen>
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| 193 |
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| 194 | <para>Depending on your machine architecture, the above may differ slightly,
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| 195 | the difference usually being the name of the directory
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| 196 | after <filename class="directory">/usr/lib/gcc</filename>. If your machine is
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| 197 | a 64-bit system, you may also see a directory named <filename class="directory">lib64</filename>
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| 198 | towards the end of the string. The important thing to
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| 199 | look for here is that <command>gcc</command> has found all three
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| 200 | <filename>crt*.o</filename> files under the
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| 201 | <filename class="directory">/usr/lib</filename> directory.</para>
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| 202 |
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| 203 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 204 | href="adjusting.xml"
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| 205 | xpointer="xpointer(//*[@os='g'])"/>
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| 206 |
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| 207 | <screen><userinput>grep -B4 '^ /usr/include' dummy.log</userinput></screen>
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| 208 |
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| 209 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 210 | href="adjusting.xml"
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| 211 | xpointer="xpointer(//*[@os='h'])"/>
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| 212 |
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| 213 | <screen><computeroutput>#include <...> search starts here:
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| 214 | /usr/lib/gcc/i686-pc-linux-gnu/&gcc-version;/include
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| 215 | /usr/local/include
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| 216 | /usr/lib/gcc/i686-pc-linux-gnu/&gcc-version;/include-fixed
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| 217 | /usr/include</computeroutput></screen>
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| 218 |
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| 219 | <para>Again, note that the directory named after your target triplet may be
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| 220 | different than the above, depending on your architecture.</para>
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| 221 |
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| 222 | <note><para>As of version 4.3.0, GCC now unconditionally installs the
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| 223 | <filename>limits.h</filename> file into the private
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| 224 | <filename class="directory">include-fixed</filename> directory, and that
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| 225 | directory is required to be in place.</para></note>
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| 226 |
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| 227 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 228 | href="adjusting.xml"
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| 229 | xpointer="xpointer(//*[@os='i'])"/>
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| 230 |
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| 231 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 232 | href="adjusting.xml"
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| 233 | xpointer="xpointer(//*[@os='j'])"/>
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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='k'])"/>
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| 238 |
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| 239 | <screen><computeroutput>SEARCH_DIR("/usr/i686-pc-linux-gnu/lib32")
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| 240 | SEARCH_DIR("/usr/local/lib32")
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| 241 | SEARCH_DIR("/lib32")
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| 242 | SEARCH_DIR("/usr/lib32")
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| 243 | SEARCH_DIR("/usr/i686-pc-linux-gnu/lib")
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| 244 | SEARCH_DIR("/usr/local/lib")
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| 245 | SEARCH_DIR("/lib")
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| 246 | SEARCH_DIR("/usr/lib");</computeroutput></screen>
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| 247 |
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| 248 | <para>A 64-bit system may see a few different directories. For example, here
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| 249 | is the output from an x86_64 machine:</para>
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| 250 |
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| 251 | <screen><computeroutput>SEARCH_DIR("/usr/x86_64-unknown-linux-gnu/lib64")
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| 252 | SEARCH_DIR("/usr/local/lib64")
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| 253 | SEARCH_DIR("/lib64")
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| 254 | SEARCH_DIR("/usr/lib64")
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| 255 | SEARCH_DIR("/usr/x86_64-unknown-linux-gnu/lib")
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| 256 | SEARCH_DIR("/usr/local/lib")
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| 257 | SEARCH_DIR("/lib")
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| 258 | SEARCH_DIR("/usr/lib");</computeroutput></screen>
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| 259 |
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| 260 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 261 | href="adjusting.xml"
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| 262 | xpointer="xpointer(//*[@os='l'])"/>
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| 263 |
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| 264 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 265 | href="adjusting.xml"
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| 266 | xpointer="xpointer(//*[@os='m'])"/>
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| 267 |
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| 268 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 269 | href="adjusting.xml"
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| 270 | xpointer="xpointer(//*[@os='n'])"/>
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| 271 |
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| 272 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 273 | href="adjusting.xml"
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| 274 | xpointer="xpointer(//*[@os='o'])"/>
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| 275 |
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| 276 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 277 | href="adjusting.xml"
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| 278 | xpointer="xpointer(//*[@os='p'])"/>
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| 279 |
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| 280 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 281 | href="adjusting.xml"
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| 282 | xpointer="xpointer(//*[@os='q'])"/>
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| 283 |
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| 284 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 285 | href="adjusting.xml"
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| 286 | xpointer="xpointer(//*[@os='r'])"/>
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| 287 |
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| 288 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 289 | href="adjusting.xml"
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| 290 | xpointer="xpointer(//*[@os='s'])"/>
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| 291 |
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| 292 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 293 | href="adjusting.xml"
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| 294 | xpointer="xpointer(//*[@os='t'])"/>
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| 295 |
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| 296 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 297 | href="adjusting.xml"
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| 298 | xpointer="xpointer(//*[@os='u'])"/>
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| 299 |
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| 300 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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| 301 | href="adjusting.xml"
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| 302 | xpointer="xpointer(//*[@os='v'])"/>
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| 303 |
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| 304 | <para>Finally, move a misplaced file:</para>
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| 305 |
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| 306 | <screen><userinput remap="install">mkdir -pv /usr/share/gdb/auto-load/usr/lib
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| 307 | mv -v /usr/lib/*gdb.py /usr/share/gdb/auto-load/usr/lib</userinput></screen>
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| 308 |
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| 309 | </sect2>
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| 310 |
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| 311 | <sect2 id="contents-gcc" role="content">
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| 312 | <title>Contents of GCC</title>
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| 313 |
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| 314 | <segmentedlist>
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| 315 | <segtitle>Installed programs</segtitle>
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| 316 | <segtitle>Installed libraries</segtitle>
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| 317 | <segtitle>Installed directories</segtitle>
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| 318 |
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| 319 | <seglistitem>
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| 320 | <seg>c++, cc (link to gcc), cpp, g++, gcc,
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| 321 | gcc-ar, gcc-nm, gcc-ranlib, and gcov</seg>
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| 322 |
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| 323 | <seg>libasan.{a,so}, libatomic.{a,so}, libgcc.a, libgcc_eh.a,
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| 324 | libgcc_s.so, libgcov.a, libgomp.{a,so}, libiberty.a, libitm.{a,so},
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| 325 | liblto_plugin.so,
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| 326 | libquadmath.{a,so}, libssp.{a,so},
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| 327 | libssp_nonshared.a, libstdc++.{a,so}, libsupc++.a and libtsan.{a,so}</seg>
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| 328 |
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| 329 | <seg>/usr/include/c++, /usr/lib/gcc, /usr/libexec/gcc,
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| 330 | /usr/share/gcc-&gcc-version;</seg>
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| 331 | </seglistitem>
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| 332 | </segmentedlist>
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| 333 |
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| 334 | <variablelist>
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| 335 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 336 | <?dbfo list-presentation="list"?>
|
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| 337 | <?dbhtml list-presentation="table"?>
|
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| 338 |
|
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| 339 | <varlistentry id="c">
|
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| 340 | <term><command>c++</command></term>
|
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| 341 | <listitem>
|
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| 342 | <para>The C++ compiler</para>
|
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| 343 | <indexterm zone="ch-system-gcc c">
|
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| 344 | <primary sortas="b-c++">c++</primary>
|
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| 345 | </indexterm>
|
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| 346 | </listitem>
|
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| 347 | </varlistentry>
|
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| 348 |
|
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| 349 | <varlistentry id="cc">
|
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| 350 | <term><command>cc</command></term>
|
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| 351 | <listitem>
|
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| 352 | <para>The C compiler</para>
|
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| 353 | <indexterm zone="ch-system-gcc cc">
|
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| 354 | <primary sortas="b-cc">cc</primary>
|
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| 355 | </indexterm>
|
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| 356 | </listitem>
|
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| 357 | </varlistentry>
|
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| 358 |
|
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| 359 | <varlistentry id="cpp">
|
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| 360 | <term><command>cpp</command></term>
|
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| 361 | <listitem>
|
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| 362 | <para>The C preprocessor; it is used by the compiler to expand the
|
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| 363 | #include, #define, and similar statements in the source files</para>
|
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| 364 | <indexterm zone="ch-system-gcc cpp">
|
|---|
| 365 | <primary sortas="b-cpp">cpp</primary>
|
|---|
| 366 | </indexterm>
|
|---|
| 367 | </listitem>
|
|---|
| 368 | </varlistentry>
|
|---|
| 369 |
|
|---|
| 370 | <varlistentry id="g">
|
|---|
| 371 | <term><command>g++</command></term>
|
|---|
| 372 | <listitem>
|
|---|
| 373 | <para>The C++ compiler</para>
|
|---|
| 374 | <indexterm zone="ch-system-gcc g">
|
|---|
| 375 | <primary sortas="b-g++">g++</primary>
|
|---|
| 376 | </indexterm>
|
|---|
| 377 | </listitem>
|
|---|
| 378 | </varlistentry>
|
|---|
| 379 |
|
|---|
| 380 | <varlistentry id="gcc">
|
|---|
| 381 | <term><command>gcc</command></term>
|
|---|
| 382 | <listitem>
|
|---|
| 383 | <para>The C compiler</para>
|
|---|
| 384 | <indexterm zone="ch-system-gcc gcc">
|
|---|
| 385 | <primary sortas="b-gcc">gcc</primary>
|
|---|
| 386 | </indexterm>
|
|---|
| 387 | </listitem>
|
|---|
| 388 | </varlistentry>
|
|---|
| 389 |
|
|---|
| 390 | <varlistentry id="gcc-ar">
|
|---|
| 391 | <term><command>gcc-ar</command></term>
|
|---|
| 392 | <listitem>
|
|---|
| 393 | <para>A wrapper around <command>ar</command> that adds a
|
|---|
| 394 | plugin to the command line. This program is only used
|
|---|
| 395 | to add "link time optization" and is not useful with the
|
|---|
| 396 | default build options.</para>
|
|---|
| 397 | <indexterm zone="ch-system-gcc gcc-ar">
|
|---|
| 398 | <primary sortas="b-gcc-ar">gc-ar</primary>
|
|---|
| 399 | </indexterm>
|
|---|
| 400 | </listitem>
|
|---|
| 401 | </varlistentry>
|
|---|
| 402 |
|
|---|
| 403 | <varlistentry id="gcc-nm">
|
|---|
| 404 | <term><command>gcc-nm</command></term>
|
|---|
| 405 | <listitem>
|
|---|
| 406 | <para>A wrapper around <command>nm</command> that adds a
|
|---|
| 407 | plugin to the command line. This program is only used
|
|---|
| 408 | to add "link time optization" and is not useful with the
|
|---|
| 409 | default build options.</para>
|
|---|
| 410 | <indexterm zone="ch-system-gcc gcc-nm">
|
|---|
| 411 | <primary sortas="b-gcc-nm">gc-nm</primary>
|
|---|
| 412 | </indexterm>
|
|---|
| 413 | </listitem>
|
|---|
| 414 | </varlistentry>
|
|---|
| 415 |
|
|---|
| 416 | <varlistentry id="gcc-ranlib">
|
|---|
| 417 | <term><command>gcc-ranlib</command></term>
|
|---|
| 418 | <listitem>
|
|---|
| 419 | <para>A wrapper around <command>ranlib</command> that adds a
|
|---|
| 420 | plugin to the command line. This program is only used
|
|---|
| 421 | to add "link time optization" and is not useful with the
|
|---|
| 422 | default build options.</para>
|
|---|
| 423 | <indexterm zone="ch-system-gcc gcc-ranlib">
|
|---|
| 424 | <primary sortas="b-gcc-ranlib">gc-ranlib</primary>
|
|---|
| 425 | </indexterm>
|
|---|
| 426 | </listitem>
|
|---|
| 427 | </varlistentry>
|
|---|
| 428 |
|
|---|
| 429 | <varlistentry id="gcov">
|
|---|
| 430 | <term><command>gcov</command></term>
|
|---|
| 431 | <listitem>
|
|---|
| 432 | <para>A coverage testing tool; it is used to analyze programs to
|
|---|
| 433 | determine where optimizations will have the most effect</para>
|
|---|
| 434 | <indexterm zone="ch-system-gcc gcov">
|
|---|
| 435 | <primary sortas="b-gcov">gcov</primary>
|
|---|
| 436 | </indexterm>
|
|---|
| 437 | </listitem>
|
|---|
| 438 | </varlistentry>
|
|---|
| 439 |
|
|---|
| 440 | <varlistentry id="libasan">
|
|---|
| 441 | <term><command>libasan</command></term>
|
|---|
| 442 | <listitem>
|
|---|
| 443 | <para>The Address Sanitizer runtime library</para>
|
|---|
| 444 | <indexterm zone="ch-system-gcc libasan">
|
|---|
| 445 | <primary sortas="b-libasan">libasan</primary>
|
|---|
| 446 | </indexterm>
|
|---|
| 447 | </listitem>
|
|---|
| 448 | </varlistentry>
|
|---|
| 449 |
|
|---|
| 450 | <varlistentry id="libgcc">
|
|---|
| 451 | <term><filename class="libraryfile">libgcc</filename></term>
|
|---|
| 452 | <listitem>
|
|---|
| 453 | <para>Contains run-time support for <command>gcc</command></para>
|
|---|
| 454 | <indexterm zone="ch-system-gcc libgcc">
|
|---|
| 455 | <primary sortas="c-libgcc*">libgcc*</primary>
|
|---|
| 456 | </indexterm>
|
|---|
| 457 | </listitem>
|
|---|
| 458 | </varlistentry>
|
|---|
| 459 |
|
|---|
| 460 | <varlistentry id="libgcov">
|
|---|
| 461 | <term><filename class="libraryfile">libgcov</filename></term>
|
|---|
| 462 | <listitem>
|
|---|
| 463 | <para>This library is linked in to a program when GCC is instructed
|
|---|
| 464 | to enable profiling</para>
|
|---|
| 465 | <indexterm zone="ch-system-gcc libgcov">
|
|---|
| 466 | <primary sortas="c-libgcov">libgcov</primary>
|
|---|
| 467 | </indexterm>
|
|---|
| 468 | </listitem>
|
|---|
| 469 | </varlistentry>
|
|---|
| 470 |
|
|---|
| 471 | <varlistentry id="libgomp">
|
|---|
| 472 | <term><filename class="libraryfile">libgomp</filename></term>
|
|---|
| 473 | <listitem>
|
|---|
| 474 | <para>GNU implementation of the OpenMP API for multi-platform
|
|---|
| 475 | shared-memory parallel programming in C/C++ and Fortran</para>
|
|---|
| 476 | <indexterm zone="ch-system-gcc libgomp">
|
|---|
| 477 | <primary sortas="c-libgomp">libgomp</primary>
|
|---|
| 478 | </indexterm>
|
|---|
| 479 | </listitem>
|
|---|
| 480 | </varlistentry>
|
|---|
| 481 |
|
|---|
| 482 | <varlistentry id="libiberty">
|
|---|
| 483 | <term><filename class="libraryfile">libiberty</filename></term>
|
|---|
| 484 | <listitem>
|
|---|
| 485 | <para>Contains routines used by various GNU programs, including
|
|---|
| 486 | <command>getopt</command>, <command>obstack</command>,
|
|---|
| 487 | <command>strerror</command>, <command>strtol</command>, and
|
|---|
| 488 | <command>strtoul</command></para>
|
|---|
| 489 | <indexterm zone="ch-system-gcc libiberty">
|
|---|
| 490 | <primary sortas="c-libiberty">libiberty</primary>
|
|---|
| 491 | </indexterm>
|
|---|
| 492 | </listitem>
|
|---|
| 493 | </varlistentry>
|
|---|
| 494 |
|
|---|
| 495 | <varlistentry id="liblto_plugin">
|
|---|
| 496 | <term><filename class="libraryfile">liblto_plugin</filename></term>
|
|---|
| 497 | <listitem>
|
|---|
| 498 | <para>GCC's Link Time Optimization (LTO) plugin allows GCC to perform
|
|---|
| 499 | optimizations across compilation units.</para>
|
|---|
| 500 | <indexterm zone="ch-system-gcc liblto_plugin">
|
|---|
| 501 | <primary sortas="c-liblto_plugin*">liblto_plugin*</primary>
|
|---|
| 502 | </indexterm>
|
|---|
| 503 | </listitem>
|
|---|
| 504 | </varlistentry>
|
|---|
| 505 | <!--
|
|---|
| 506 | <varlistentry id="libmudflap">
|
|---|
| 507 | <term><filename class="libraryfile">libmudflap</filename></term>
|
|---|
| 508 | <listitem>
|
|---|
| 509 | <para>Contains routines that support GCC's bounds checking
|
|---|
| 510 | functionality</para>
|
|---|
| 511 | <indexterm zone="ch-system-gcc libmudflap">
|
|---|
| 512 | <primary sortas="c-libmudflap*">libmudflap*</primary>
|
|---|
| 513 | </indexterm>
|
|---|
| 514 | </listitem>
|
|---|
| 515 | </varlistentry>
|
|---|
| 516 | -->
|
|---|
| 517 | <varlistentry id="libquadmath">
|
|---|
| 518 | <term><filename class="libraryfile">libquadmath</filename></term>
|
|---|
| 519 | <listitem>
|
|---|
| 520 | <para>GCC Quad Precision Math Library API</para>
|
|---|
| 521 | <indexterm zone="ch-system-gcc libquadmath">
|
|---|
| 522 | <primary sortas="c-libquadmath*">libquadmath*</primary>
|
|---|
| 523 | </indexterm>
|
|---|
| 524 | </listitem>
|
|---|
| 525 | </varlistentry>
|
|---|
| 526 |
|
|---|
| 527 | <varlistentry id="libssp">
|
|---|
| 528 | <term><filename class="libraryfile">libssp</filename></term>
|
|---|
| 529 | <listitem>
|
|---|
| 530 | <para>Contains routines supporting GCC's stack-smashing protection
|
|---|
| 531 | functionality</para>
|
|---|
| 532 | <indexterm zone="ch-system-gcc libssp">
|
|---|
| 533 | <primary sortas="c-libssp*">libssp*</primary>
|
|---|
| 534 | </indexterm>
|
|---|
| 535 | </listitem>
|
|---|
| 536 | </varlistentry>
|
|---|
| 537 |
|
|---|
| 538 | <varlistentry id="libstdc">
|
|---|
| 539 | <term><filename class="libraryfile">libstdc++</filename></term>
|
|---|
| 540 | <listitem>
|
|---|
| 541 | <para>The standard C++ library</para>
|
|---|
| 542 | <indexterm zone="ch-system-gcc libstdc">
|
|---|
| 543 | <primary sortas="c-libstdc++">libstdc++</primary>
|
|---|
| 544 | </indexterm>
|
|---|
| 545 | </listitem>
|
|---|
| 546 | </varlistentry>
|
|---|
| 547 |
|
|---|
| 548 | <varlistentry id="libsupc">
|
|---|
| 549 | <term><filename class="libraryfile">libsupc++</filename></term>
|
|---|
| 550 | <listitem>
|
|---|
| 551 | <para>Provides supporting routines for the C++ programming
|
|---|
| 552 | language</para>
|
|---|
| 553 | <indexterm zone="ch-system-gcc libsupc">
|
|---|
| 554 | <primary sortas="c-libsupc++">libsupc++</primary>
|
|---|
| 555 | </indexterm>
|
|---|
| 556 | </listitem>
|
|---|
| 557 | </varlistentry>
|
|---|
| 558 |
|
|---|
| 559 | <varlistentry id="libtsan">
|
|---|
| 560 | <term><filename class="libraryfile">libtsan</filename></term>
|
|---|
| 561 | <listitem>
|
|---|
| 562 | <para>The Thread Sanitizer runtime library</para>
|
|---|
| 563 | <indexterm zone="ch-system-gcc libtsan">
|
|---|
| 564 | <primary sortas="c-libtsan">libtsan</primary>
|
|---|
| 565 | </indexterm>
|
|---|
| 566 | </listitem>
|
|---|
| 567 | </varlistentry>
|
|---|
| 568 |
|
|---|
| 569 | </variablelist>
|
|---|
| 570 |
|
|---|
| 571 | </sect2>
|
|---|
| 572 |
|
|---|
| 573 | </sect1>
|
|---|
