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d13c6db727
Fix gcc LTO symlink for i686 systems. Fix kbd-2.0.1.tar.gz md5sum. Fix procps-ng url. git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@10565 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
579 lines
20 KiB
XML
579 lines
20 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../general.ent">
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%general-entities;
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]>
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<sect1 id="ch-system-gcc" role="wrap">
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<?dbhtml filename="gcc.html"?>
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<sect1info condition="script">
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<productname>gcc</productname>
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<productnumber>&gcc-version;</productnumber>
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<address>&gcc-url;</address>
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</sect1info>
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<title>GCC-&gcc-version;</title>
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<indexterm zone="ch-system-gcc">
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<primary sortas="a-GCC">GCC</primary>
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</indexterm>
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<sect2 role="package">
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<title/>
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<para>The GCC package contains the GNU compiler collection, which includes
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the C and C++ compilers.</para>
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<segmentedlist>
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<segtitle>&buildtime;</segtitle>
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<segtitle>&diskspace;</segtitle>
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<seglistitem>
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<seg>&gcc-ch6-sbu;</seg>
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<seg>&gcc-ch6-du;</seg>
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</seglistitem>
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</segmentedlist>
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</sect2>
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<sect2 role="installation">
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<title>Installation of GCC</title>
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<para>First fix a problem identified upstream that causes some
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programs to fail:</para>
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<screen><userinput remap="pre">patch -Np1 -i ../&gcc-upstream-patch;</userinput></screen>
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<!--
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<para>As in <xref linkend="ch-tools-gcc-pass2"/>, apply the following
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<command>sed</command> to force the build to use the
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<option>-fomit-frame-pointer</option> compiler flag in order to ensure
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consistent compiler builds:</para>
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<screen><userinput remap="pre">case `uname -m` in
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i?86) sed -i 's/^T_CFLAGS =$/& -fomit-frame-pointer/' gcc/Makefile.in ;;
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esac</userinput></screen>
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-->
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<para>The GCC documentation recommends building GCC outside of the source
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directory in a dedicated build directory:</para>
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<screen><userinput remap="pre">mkdir -v ../gcc-build
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cd ../gcc-build</userinput></screen>
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<para>Prepare GCC for compilation:</para>
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<screen><userinput remap="configure">SED=sed \
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../gcc-&gcc-version;/configure \
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--prefix=/usr \
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--enable-shared \
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--enable-threads=posix \
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--enable-__cxa_atexit \
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--enable-clocale=gnu \
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--enable-languages=c,c++ \
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--disable-multilib \
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--disable-bootstrap \
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--with-system-zlib</userinput></screen>
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<para>Note that for other languages, there are some prerequisites that
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are not available. See the BLFS Book for instructions on how to
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build all the GCC supported languages.</para>
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<variablelist>
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<title>The meaning of the new configure option:</title>
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<varlistentry>
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<term><envar>SED=sed</envar></term>
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<listitem>
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<para>Setting this environment variable prevents a hard-coded
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path to /tools/bin/sed.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>--with-system-zlib</parameter></term>
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<listitem>
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<para>This switch tells GCC to link to the system installed copy of
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the Zlib library, rather than its own internal copy.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<para>Compile the package:</para>
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<screen><userinput remap="make">make</userinput></screen>
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<important>
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<para>In this section, the test suite for GCC is considered
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critical. Do not skip it under any circumstance.</para>
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</important>
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<para>One set of tests in the GCC test suite is known to exhaust the stack,
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so increase the stack size prior to running the tests:</para>
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<screen><userinput remap="test">ulimit -s 32768</userinput></screen>
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<para>Test the results, but do not stop at errors:</para>
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<screen><userinput remap="test">make -k check</userinput></screen>
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<para>To receive a summary of the test suite results, run:</para>
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<screen><userinput remap="test">../gcc-&gcc-version;/contrib/test_summary</userinput></screen>
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<para>For only the summaries, pipe the output through
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<userinput>grep -A7 Summ</userinput>.</para>
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<para>Results can be compared with those located at <ulink
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url="&test-results;"/> and <ulink url="http://gcc.gnu.org/ml/gcc-testresults/"/>.</para>
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<para>A few unexpected failures cannot always be avoided. The GCC developers
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are usually aware of these issues, but have not resolved them yet. In
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particular, the <filename class="libraryfile">libmudflap</filename> tests
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are known to be particularly problematic as a result of a bug in GCC
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(<ulink url="http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20003"/>).
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Unless the test results are vastly different from those at the above URL,
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it is safe to continue.</para>
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<para>Install the package:</para>
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<screen><userinput remap="install">make install</userinput></screen>
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<para>Some packages expect the C preprocessor to be installed in the
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<filename class="directory">/lib</filename> directory.
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To support those packages, create this symlink:</para>
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<screen><userinput remap="install">ln -sv ../usr/bin/cpp /lib</userinput></screen>
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<para>Many packages use the name <command>cc</command> to call the C
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compiler. To satisfy those packages, create a symlink:</para>
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<screen><userinput remap="install">ln -sv gcc /usr/bin/cc</userinput></screen>
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<para>Add a compatibility symlink to enable building programs with
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Link Time Optimization (LTO):</para>
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<screen><userinput remap="install">install -dm755 /usr/lib/bfd-plugins
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pushd /usr/lib/bfd-plugins
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if [ $(uname -m) == "i686" ]; then
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ln -sfv ../../libexec/gcc/i686-pc-linux-gnu/&gcc-version;/liblto_plugin.so
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else
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ln -sfv ../../libexec/gcc/x86_64-unknown-linux-gnu/&gcc-version;/liblto_plugin.so
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fi
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popd</userinput></screen>
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<para>Now that our final toolchain is in place, it is important to again ensure
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that compiling and linking will work as expected. We do this by performing
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the same sanity checks as we did earlier in the chapter:</para>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="adjusting.xml"
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xpointer="xpointer(//*[@os='a'])"/>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="adjusting.xml"
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xpointer="xpointer(//*[@os='b'])"/>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="adjusting.xml"
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xpointer="xpointer(//*[@os='c'])"/>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="adjusting.xml"
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xpointer="xpointer(//*[@os='d'])"/>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="adjusting.xml"
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xpointer="xpointer(//*[@os='e'])"/>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="adjusting.xml"
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xpointer="xpointer(//*[@os='f'])"/>
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<screen><computeroutput>/usr/lib/gcc/i686-pc-linux-gnu/&gcc-version;/../../../crt1.o succeeded
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/usr/lib/gcc/i686-pc-linux-gnu/&gcc-version;/../../../crti.o succeeded
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/usr/lib/gcc/i686-pc-linux-gnu/&gcc-version;/../../../crtn.o succeeded</computeroutput></screen>
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<para>Depending on your machine architecture, the above may differ slightly,
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the difference usually being the name of the directory
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after <filename class="directory">/usr/lib/gcc</filename>. If your machine is
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a 64-bit system, you may also see a directory named <filename class="directory">lib64</filename>
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towards the end of the string. The important thing to
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look for here is that <command>gcc</command> has found all three
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<filename>crt*.o</filename> files under the
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<filename class="directory">/usr/lib</filename> directory.</para>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="adjusting.xml"
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xpointer="xpointer(//*[@os='g'])"/>
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<screen><userinput>grep -B4 '^ /usr/include' dummy.log</userinput></screen>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="adjusting.xml"
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xpointer="xpointer(//*[@os='h'])"/>
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<screen><computeroutput>#include <...> search starts here:
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/usr/lib/gcc/i686-pc-linux-gnu/&gcc-version;/include
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/usr/local/include
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/usr/lib/gcc/i686-pc-linux-gnu/&gcc-version;/include-fixed
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/usr/include</computeroutput></screen>
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<para>Again, note that the directory named after your target triplet may be
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different than the above, depending on your architecture.</para>
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<note><para>As of version 4.3.0, GCC now unconditionally installs the
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<filename>limits.h</filename> file into the private
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<filename class="directory">include-fixed</filename> directory, and that
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directory is required to be in place.</para></note>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="adjusting.xml"
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xpointer="xpointer(//*[@os='i'])"/>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="adjusting.xml"
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xpointer="xpointer(//*[@os='j'])"/>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="adjusting.xml"
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xpointer="xpointer(//*[@os='k'])"/>
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<screen><computeroutput>SEARCH_DIR("/usr/i686-pc-linux-gnu/lib32")
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SEARCH_DIR("/usr/local/lib32")
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SEARCH_DIR("/lib32")
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SEARCH_DIR("/usr/lib32")
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SEARCH_DIR("/usr/i686-pc-linux-gnu/lib")
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SEARCH_DIR("/usr/local/lib")
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SEARCH_DIR("/lib")
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SEARCH_DIR("/usr/lib");</computeroutput></screen>
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<para>A 64-bit system may see a few different directories. For example, here
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is the output from an x86_64 machine:</para>
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<screen><computeroutput>SEARCH_DIR("/usr/x86_64-unknown-linux-gnu/lib64")
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SEARCH_DIR("/usr/local/lib64")
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SEARCH_DIR("/lib64")
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SEARCH_DIR("/usr/lib64")
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SEARCH_DIR("/usr/x86_64-unknown-linux-gnu/lib")
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SEARCH_DIR("/usr/local/lib")
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SEARCH_DIR("/lib")
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SEARCH_DIR("/usr/lib");</computeroutput></screen>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="adjusting.xml"
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xpointer="xpointer(//*[@os='l'])"/>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="adjusting.xml"
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xpointer="xpointer(//*[@os='m'])"/>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="adjusting.xml"
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xpointer="xpointer(//*[@os='n'])"/>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="adjusting.xml"
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xpointer="xpointer(//*[@os='o'])"/>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="adjusting.xml"
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xpointer="xpointer(//*[@os='p'])"/>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="adjusting.xml"
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xpointer="xpointer(//*[@os='q'])"/>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="adjusting.xml"
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xpointer="xpointer(//*[@os='r'])"/>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="adjusting.xml"
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xpointer="xpointer(//*[@os='s'])"/>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="adjusting.xml"
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xpointer="xpointer(//*[@os='t'])"/>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="adjusting.xml"
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xpointer="xpointer(//*[@os='u'])"/>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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href="adjusting.xml"
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xpointer="xpointer(//*[@os='v'])"/>
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<para>Finally, move a misplaced file:</para>
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<screen><userinput remap="install">mkdir -pv /usr/share/gdb/auto-load/usr/lib
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mv -v /usr/lib/*gdb.py /usr/share/gdb/auto-load/usr/lib</userinput></screen>
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</sect2>
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<sect2 id="contents-gcc" role="content">
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<title>Contents of GCC</title>
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<segmentedlist>
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<segtitle>Installed programs</segtitle>
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<segtitle>Installed libraries</segtitle>
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<segtitle>Installed directories</segtitle>
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<seglistitem>
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<seg>c++, cc (link to gcc), cpp, g++, gcc,
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gcc-ar, gcc-nm, gcc-ranlib, and gcov</seg>
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<seg>libasan.{a,so}, libatomic.{a,so}, libgcc.a, libgcc_eh.a,
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libgcc_s.so, libgcov.a, libgomp.{a,so}, libiberty.a, libitm.{a,so},
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liblto_plugin.so, libmudflap.{a,so}, libmudflapth.{a,so},
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libquadmath.{a,so}, libssp.{a,so},
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libssp_nonshared.a, libstdc++.{a,so}, libsupc++.a and libtsan.{a,so}</seg>
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<seg>/usr/include/c++, /usr/lib/gcc, /usr/libexec/gcc,
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/usr/share/gcc-&gcc-version;</seg>
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</seglistitem>
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</segmentedlist>
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<variablelist>
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<bridgehead renderas="sect3">Short Descriptions</bridgehead>
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<?dbfo list-presentation="list"?>
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<?dbhtml list-presentation="table"?>
|
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<varlistentry id="c">
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<term><command>c++</command></term>
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<listitem>
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<para>The C++ compiler</para>
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<indexterm zone="ch-system-gcc c">
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<primary sortas="b-c++">c++</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="cc">
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<term><command>cc</command></term>
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<listitem>
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<para>The C compiler</para>
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<indexterm zone="ch-system-gcc cc">
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<primary sortas="b-cc">cc</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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|
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<varlistentry id="cpp">
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<term><command>cpp</command></term>
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<listitem>
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<para>The C preprocessor; it is used by the compiler to expand the
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#include, #define, and similar statements in the source files</para>
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<indexterm zone="ch-system-gcc cpp">
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<primary sortas="b-cpp">cpp</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="g">
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<term><command>g++</command></term>
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<listitem>
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<para>The C++ compiler</para>
|
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<indexterm zone="ch-system-gcc g">
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<primary sortas="b-g++">g++</primary>
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</indexterm>
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</listitem>
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</varlistentry>
|
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|
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<varlistentry id="gcc">
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<term><command>gcc</command></term>
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<listitem>
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<para>The C compiler</para>
|
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<indexterm zone="ch-system-gcc gcc">
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<primary sortas="b-gcc">gcc</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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|
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<varlistentry id="gcc-ar">
|
|
<term><command>gcc-ar</command></term>
|
|
<listitem>
|
|
<para>A wrapper around <command>ar</command> that adds a
|
|
plugin to the command line. This program is only used
|
|
to add "link time optization" and is not useful with the
|
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default build options.</para>
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<indexterm zone="ch-system-gcc gcc-ar">
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<primary sortas="b-gcc-ar">gc-ar</primary>
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</indexterm>
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</listitem>
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</varlistentry>
|
|
|
|
<varlistentry id="gcc-nm">
|
|
<term><command>gcc-nm</command></term>
|
|
<listitem>
|
|
<para>A wrapper around <command>nm</command> that adds a
|
|
plugin to the command line. This program is only used
|
|
to add "link time optization" and is not useful with the
|
|
default build options.</para>
|
|
<indexterm zone="ch-system-gcc gcc-nm">
|
|
<primary sortas="b-gcc-nm">gc-nm</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="gcc-ranlib">
|
|
<term><command>gcc-ranlib</command></term>
|
|
<listitem>
|
|
<para>A wrapper around <command>ranlib</command> that adds a
|
|
plugin to the command line. This program is only used
|
|
to add "link time optization" and is not useful with the
|
|
default build options.</para>
|
|
<indexterm zone="ch-system-gcc gcc-ranlib">
|
|
<primary sortas="b-gcc-ranlib">gc-ranlib</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="gcov">
|
|
<term><command>gcov</command></term>
|
|
<listitem>
|
|
<para>A coverage testing tool; it is used to analyze programs to
|
|
determine where optimizations will have the most effect</para>
|
|
<indexterm zone="ch-system-gcc gcov">
|
|
<primary sortas="b-gcov">gcov</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libasan">
|
|
<term><command>libasan</command></term>
|
|
<listitem>
|
|
<para>The Address Sanitizer runtime library</para>
|
|
<indexterm zone="ch-system-gcc libasan">
|
|
<primary sortas="b-libasan">libasan</primary>
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|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libgcc">
|
|
<term><filename class="libraryfile">libgcc</filename></term>
|
|
<listitem>
|
|
<para>Contains run-time support for <command>gcc</command></para>
|
|
<indexterm zone="ch-system-gcc libgcc">
|
|
<primary sortas="c-libgcc*">libgcc*</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libgcov">
|
|
<term><filename class="libraryfile">libgcov</filename></term>
|
|
<listitem>
|
|
<para>This library is linked in to a program when GCC is instructed
|
|
to enable profiling</para>
|
|
<indexterm zone="ch-system-gcc libgcov">
|
|
<primary sortas="c-libgcov">libgcov</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libgomp">
|
|
<term><filename class="libraryfile">libgomp</filename></term>
|
|
<listitem>
|
|
<para>GNU implementation of the OpenMP API for multi-platform
|
|
shared-memory parallel programming in C/C++ and Fortran</para>
|
|
<indexterm zone="ch-system-gcc libgomp">
|
|
<primary sortas="c-libgomp">libgomp</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libiberty">
|
|
<term><filename class="libraryfile">libiberty</filename></term>
|
|
<listitem>
|
|
<para>Contains routines used by various GNU programs, including
|
|
<command>getopt</command>, <command>obstack</command>,
|
|
<command>strerror</command>, <command>strtol</command>, and
|
|
<command>strtoul</command></para>
|
|
<indexterm zone="ch-system-gcc libiberty">
|
|
<primary sortas="c-libiberty">libiberty</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="liblto_plugin">
|
|
<term><filename class="libraryfile">liblto_plugin</filename></term>
|
|
<listitem>
|
|
<para>GCC's Link Time Optimization (LTO) plugin allows GCC to perform
|
|
optimizations across compilation units.</para>
|
|
<indexterm zone="ch-system-gcc liblto_plugin">
|
|
<primary sortas="c-liblto_plugin*">liblto_plugin*</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libmudflap">
|
|
<term><filename class="libraryfile">libmudflap</filename></term>
|
|
<listitem>
|
|
<para>Contains routines that support GCC's bounds checking
|
|
functionality</para>
|
|
<indexterm zone="ch-system-gcc libmudflap">
|
|
<primary sortas="c-libmudflap*">libmudflap*</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libquadmath">
|
|
<term><filename class="libraryfile">libquadmath</filename></term>
|
|
<listitem>
|
|
<para>GCC Quad Precision Math Library API</para>
|
|
<indexterm zone="ch-system-gcc libquadmath">
|
|
<primary sortas="c-libquadmath*">libquadmath*</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libssp">
|
|
<term><filename class="libraryfile">libssp</filename></term>
|
|
<listitem>
|
|
<para>Contains routines supporting GCC's stack-smashing protection
|
|
functionality</para>
|
|
<indexterm zone="ch-system-gcc libssp">
|
|
<primary sortas="c-libssp*">libssp*</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libstdc">
|
|
<term><filename class="libraryfile">libstdc++</filename></term>
|
|
<listitem>
|
|
<para>The standard C++ library</para>
|
|
<indexterm zone="ch-system-gcc libstdc">
|
|
<primary sortas="c-libstdc++">libstdc++</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libsupc">
|
|
<term><filename class="libraryfile">libsupc++</filename></term>
|
|
<listitem>
|
|
<para>Provides supporting routines for the C++ programming
|
|
language</para>
|
|
<indexterm zone="ch-system-gcc libsupc">
|
|
<primary sortas="c-libsupc++">libsupc++</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libtsan">
|
|
<term><filename class="libraryfile">libtsan</filename></term>
|
|
<listitem>
|
|
<para>The Thread Sanitizer runtime library</para>
|
|
<indexterm zone="ch-system-gcc libtsan">
|
|
<primary sortas="c-libtsan">libtsan</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
</variablelist>
|
|
|
|
</sect2>
|
|
|
|
</sect1>
|