[3f8be484] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?> |
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[aa18ac0] | 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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[3f8be484] | 4 | <!ENTITY % general-entities SYSTEM "../../general.ent"> |
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| 5 | %general-entities; |
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| 6 | ]> |
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| 7 | |
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| 8 | <sect1 id="ch-system-gcc" role="wrap"> |
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| 9 | <?dbhtml filename="gcc.html"?> |
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| 10 | |
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| 11 | <title>GCC-&gcc-version;</title> |
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| 12 | |
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| 13 | <indexterm zone="ch-system-gcc"> |
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| 14 | <primary sortas="a-GCC">GCC</primary> |
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| 15 | </indexterm> |
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| 16 | |
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| 17 | <sect2 role="package"> |
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| 18 | <title/> |
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| 19 | |
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| 20 | <para>The GCC package contains the GNU compiler collection, which includes |
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| 21 | the C and C++ compilers.</para> |
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| 22 | |
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| 23 | </sect2> |
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| 24 | |
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| 25 | <sect2 role="installation"> |
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| 26 | <title>Installation of GCC</title> |
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| 27 | |
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[24b004c] | 28 | <para os="p1">The following patch contains a number of updates to the |
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[cc858ed] | 29 | &gcc-version; branch by the GCC developers:</para> |
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| 30 | |
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| 31 | <screen os="p2"><userinput>patch -Np1 -i ../&gcc-branch_update-patch;</userinput></screen> |
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| 32 | |
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[7eea5e4] | 33 | <para os="fix1">Apply a <command>sed</command> substitution that will |
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[7327f1f] | 34 | suppress the execution of the <command>fixincludes</command> script:</para> |
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| 35 | |
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[aaa3150] | 36 | <screen os="fix2"><userinput>sed -i 's@\./fixinc\.sh@-c true@' gcc/Makefile.in</userinput></screen> |
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[7327f1f] | 37 | |
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[3f8be484] | 38 | <para os="f">The GCC documentation recommends building GCC outside of the source |
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| 39 | directory in a dedicated build directory:</para> |
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| 40 | |
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[94e6142] | 41 | <screen os="g"><userinput>mkdir -v ../gcc-build |
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[3f8be484] | 42 | cd ../gcc-build</userinput></screen> |
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| 43 | |
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| 44 | <para os="h">Prepare GCC for compilation:</para> |
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| 45 | |
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[ab871d9] | 46 | <screen os="i"><userinput>SED=sed CC="gcc -isystem /usr/include" \ |
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[b6831b6] | 47 | CXX="g++ -isystem /usr/include" \ |
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| 48 | LDFLAGS="-Wl,-rpath-link,/usr/lib:/lib" \ |
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| 49 | ../gcc-&gcc-version;/configure --prefix=/usr \ |
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[f6853e3] | 50 | --libexecdir=/usr/lib --enable-languages=c,c++ \ |
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[feeb523] | 51 | --disable-multilib --with-system-zlib \ |
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[f6853e3] | 52 | --enable-install-libiberty --disable-bootstrap</userinput></screen> |
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[3f8be484] | 53 | |
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[46d4942] | 54 | <variablelist os="i1"> |
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[cc9f07c] | 55 | <title>The meaning of the new configure options:</title> |
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[46d4942] | 56 | |
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| 57 | <varlistentry> |
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| 58 | <term><parameter>SED=sed</parameter></term> |
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| 59 | <listitem> |
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| 60 | <para>This prevents a hard-coded path to |
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| 61 | <filename>/tools/bin/sed</filename> in the <command>fixincl</command> |
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| 62 | program.</para> |
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| 63 | </listitem> |
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| 64 | </varlistentry> |
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| 65 | |
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[cc9f07c] | 66 | <varlistentry> |
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| 67 | <term><parameter>--disable-bootstrap</parameter></term> |
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| 68 | <listitem> |
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| 69 | <para>For a native build, GCC defaults to performing a 3-stage |
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| 70 | "bootstrap" of the compiler. This means that GCC is compiled a total |
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| 71 | of 3 times - it is compiled once, the first stage compiler is used |
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| 72 | to build itself again, and the second stage compiler builds itself |
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| 73 | once more. The second and third passes are then compared, verifying |
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| 74 | that GCC is able to reproduce itself successfully. However, there is |
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| 75 | no need for this with the CLFS build process so we disable it here.</para> |
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| 76 | </listitem> |
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| 77 | </varlistentry> |
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| 78 | |
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[46d4942] | 79 | </variablelist> |
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| 80 | |
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[d55f00bc] | 81 | <para os="j">Compile the package:</para> |
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[3f8be484] | 82 | |
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[f568131] | 83 | <screen os="k"><userinput>make</userinput></screen> |
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[3f8be484] | 84 | |
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[d55f00bc] | 85 | <important os="l"> |
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[d4469fc] | 86 | <para>Due to GCC's critical role in a properly functioning system, |
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| 87 | the CLFS developers strongly recommend running the testsuite.</para> |
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[3f8be484] | 88 | </important> |
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| 89 | |
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[16fb2c3c] | 90 | <para os="s1">Increase the stack size prior to running the tests:</para> |
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| 91 | |
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| 92 | <screen os="s2"><userinput remap="test">ulimit -s 32768</userinput></screen> |
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| 93 | |
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[d55f00bc] | 94 | <para os="m">Test the results, but do not stop at errors:</para> |
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[3f8be484] | 95 | |
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[686839b] | 96 | <screen os="n"><userinput remap="test">make -k check</userinput></screen> |
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[3f8be484] | 97 | |
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[d55f00bc] | 98 | <para os="o">The <parameter>-k</parameter> flag is used to make the test suite |
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[3f8be484] | 99 | run through to completion and not stop at the first failure. The GCC test |
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| 100 | suite is very comprehensive and is almost guaranteed to generate a few |
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| 101 | failures. To receive a summary of the test suite results, run:</para> |
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| 102 | |
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[686839b] | 103 | <screen os="p"><userinput remap="test">../gcc-&gcc-version;/contrib/test_summary</userinput></screen> |
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[3f8be484] | 104 | |
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[d55f00bc] | 105 | <para os="q">For only the summaries, pipe the output through |
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[3f8be484] | 106 | <userinput>grep -A7 Summ</userinput>.</para> |
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| 107 | |
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| 108 | <para os="r">A few unexpected failures cannot always be avoided. The |
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| 109 | GCC developers are usually aware of these issues, but have not |
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[d55f00bc] | 110 | resolved them yet.</para> |
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[3f8be484] | 111 | |
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| 112 | <para os="s">Install the package:</para> |
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| 113 | |
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| 114 | <screen os="t"><userinput>make install</userinput></screen> |
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| 115 | |
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[f6853e3] | 116 | <para os="w">Create a link to satisfy FHS requirements:</para> |
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[3f8be484] | 117 | |
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[3d66e17] | 118 | <screen os="x"><userinput>ln -sv ../usr/bin/cpp /lib</userinput></screen> |
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[3f8be484] | 119 | |
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[3d66e17] | 120 | <para os="y">Many packages use the name <command>cc</command> to call the C |
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[3f8be484] | 121 | compiler. To satisfy those packages, create a symlink:</para> |
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| 122 | |
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[3d66e17] | 123 | <screen os="z"><userinput>ln -sv gcc /usr/bin/cc</userinput></screen> |
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[3f8be484] | 124 | |
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[55581cc] | 125 | <para os="aa">Finally, move a misplaced file:</para> |
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| 126 | |
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[2db9f66] | 127 | <screen os="ab"><userinput>mv -v /usr/lib/libstdc++*gdb.py /usr/share/gdb/auto-load/usr/lib</userinput></screen> |
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[55581cc] | 128 | |
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[3f8be484] | 129 | </sect2> |
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| 130 | |
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| 131 | <sect2 id="contents-gcc" role="content"> |
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| 132 | <title>Contents of GCC</title> |
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| 133 | |
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| 134 | <segmentedlist> |
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| 135 | <segtitle>Installed programs</segtitle> |
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| 136 | <segtitle>Installed libraries</segtitle> |
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[61ad0b7f] | 137 | <segtitle>Installed directories</segtitle> |
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[3f8be484] | 138 | |
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| 139 | <seglistitem> |
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[f6853e3] | 140 | <seg>c++, cc (link to gcc), cpp, g++, gcc, gcov, gcov-tool</seg> |
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| 141 | <seg>libasan.[a,so], libatomic.[a,so], libcc1.so, libcilkrts.[a,so], |
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| 142 | libgcc.a, libgcc_eh.a, libgcc_s.so, libgcov.a, libgomp.[a,so], |
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| 143 | libiberty.a, libitm.[a,so], liblsan.[a,so], liblto_plugin.so, |
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| 144 | libquadmath.[a,so], libssp.[a,so], libssp_nonshared.a, |
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| 145 | libstdc++.[a,so], libsupc++.a, libtsan.[a,so], libubsan.[a,so], |
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| 146 | libvtv.[a,so]</seg> |
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| 147 | <seg>/usr/include/[c++,libiberty], /usr/lib/gcc, |
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| 148 | /usr/share/gcc-&gcc-version;</seg> |
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[3f8be484] | 149 | </seglistitem> |
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| 150 | </segmentedlist> |
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| 151 | |
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| 152 | <variablelist> |
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| 153 | <bridgehead renderas="sect3">Short Descriptions</bridgehead> |
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| 154 | <?dbfo list-presentation="list"?> |
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| 155 | <?dbhtml list-presentation="table"?> |
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| 156 | |
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| 157 | <varlistentry id="cc"> |
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| 158 | <term><command>cc</command></term> |
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| 159 | <listitem> |
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| 160 | <para>The C compiler</para> |
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| 161 | <indexterm zone="ch-system-gcc cc"> |
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| 162 | <primary sortas="b-cc">cc</primary> |
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| 163 | </indexterm> |
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| 164 | </listitem> |
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| 165 | </varlistentry> |
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| 166 | |
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| 167 | <varlistentry id="cpp"> |
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| 168 | <term><command>cpp</command></term> |
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| 169 | <listitem> |
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| 170 | <para>The C preprocessor; it is used by the compiler to expand the |
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| 171 | #include, #define, and similar statements in the source files</para> |
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| 172 | <indexterm zone="ch-system-gcc cpp"> |
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| 173 | <primary sortas="b-cpp">cpp</primary> |
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| 174 | </indexterm> |
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| 175 | </listitem> |
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| 176 | </varlistentry> |
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| 177 | |
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| 178 | <varlistentry id="c"> |
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| 179 | <term><command>c++</command></term> |
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| 180 | <listitem> |
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| 181 | <para>The C++ compiler</para> |
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| 182 | <indexterm zone="ch-system-gcc c"> |
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| 183 | <primary sortas="b-c++">c++</primary> |
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| 184 | </indexterm> |
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| 185 | </listitem> |
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| 186 | </varlistentry> |
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| 187 | |
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| 188 | <varlistentry id="g"> |
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| 189 | <term><command>g++</command></term> |
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| 190 | <listitem> |
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| 191 | <para>The C++ compiler</para> |
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| 192 | <indexterm zone="ch-system-gcc g"> |
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| 193 | <primary sortas="b-g++">g++</primary> |
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| 194 | </indexterm> |
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| 195 | </listitem> |
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| 196 | </varlistentry> |
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| 197 | |
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| 198 | <varlistentry id="gcc"> |
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| 199 | <term><command>gcc</command></term> |
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| 200 | <listitem> |
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| 201 | <para>The C compiler</para> |
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| 202 | <indexterm zone="ch-system-gcc gcc"> |
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| 203 | <primary sortas="b-gcc">gcc</primary> |
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| 204 | </indexterm> |
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| 205 | </listitem> |
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| 206 | </varlistentry> |
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| 207 | |
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| 208 | <varlistentry id="gcov"> |
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| 209 | <term><command>gcov</command></term> |
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| 210 | <listitem> |
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| 211 | <para>A coverage testing tool; it is used to analyze programs to |
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| 212 | determine where optimizations will have the most effect</para> |
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| 213 | <indexterm zone="ch-system-gcc gcov"> |
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| 214 | <primary sortas="b-gcov">gcov</primary> |
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| 215 | </indexterm> |
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| 216 | </listitem> |
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| 217 | </varlistentry> |
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| 218 | |
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[f6853e3] | 219 | <varlistentry id="gcovtool"> |
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| 220 | <term><command>gcov-tool</command></term> |
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| 221 | <listitem> |
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| 222 | <para>An offline tool to handle gcda counts</para> |
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| 223 | <indexterm zone="ch-system-gcc gcovtool"> |
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| 224 | <primary sortas="b-gcov-tool">gcov-tool</primary> |
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| 225 | </indexterm> |
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| 226 | </listitem> |
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| 227 | </varlistentry> |
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| 228 | |
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[01aa1cc] | 229 | <varlistentry id="libasan"> |
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| 230 | <term><filename class="libraryfile">libasan</filename></term> |
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| 231 | <listitem> |
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| 232 | <para>The Address Sanitizer runtime library</para> |
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| 233 | <indexterm zone="ch-system-gcc libasan"> |
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| 234 | <primary sortas="c-libasan">libasan</primary> |
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| 235 | </indexterm> |
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| 236 | </listitem> |
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| 237 | </varlistentry> |
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| 238 | |
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[d1f79ab] | 239 | <varlistentry id="libatomic"> |
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| 240 | <term><filename class="libraryfile">libatomic</filename></term> |
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| 241 | <listitem> |
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| 242 | <para>A GCC support runtime library for atomic operations not |
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| 243 | supported by hardware</para> |
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| 244 | <indexterm zone="ch-system-gcc libatomic"> |
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[f6853e3] | 245 | <primary sortas="c-libatomic">libatomic</primary> |
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| 246 | </indexterm> |
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| 247 | </listitem> |
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| 248 | </varlistentry> |
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| 249 | |
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| 250 | <varlistentry id="libcc1"> |
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| 251 | <term><filename class="libraryfile">libcc1</filename></term> |
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| 252 | <listitem> |
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| 253 | <para>Translates API into RPC calls</para> |
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| 254 | <indexterm zone="ch-system-gcc libcc1"> |
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| 255 | <primary sortas="c-libcc1">libcc1</primary> |
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| 256 | </indexterm> |
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| 257 | </listitem> |
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| 258 | </varlistentry> |
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| 259 | |
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| 260 | <varlistentry id="libcilkrts"> |
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| 261 | <term><filename class="libraryfile">libcilkrts</filename></term> |
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| 262 | <listitem> |
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| 263 | <para>Intel® Cilk™ Plus runtime library</para> |
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| 264 | <indexterm zone="ch-system-gcc libcilkrts"> |
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| 265 | <primary sortas="c-libcilkrts">libcilkrts</primary> |
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[d1f79ab] | 266 | </indexterm> |
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| 267 | </listitem> |
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| 268 | </varlistentry> |
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| 269 | |
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[3f8be484] | 270 | <varlistentry id="libgcc"> |
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| 271 | <term><filename class="libraryfile">libgcc</filename></term> |
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| 272 | <listitem> |
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| 273 | <para>Contains run-time support for <command>gcc</command></para> |
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| 274 | <indexterm zone="ch-system-gcc libgcc"> |
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| 275 | <primary sortas="c-libgcc*">libgcc*</primary> |
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| 276 | </indexterm> |
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| 277 | </listitem> |
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| 278 | </varlistentry> |
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| 279 | |
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[2cca6fd] | 280 | <varlistentry id="libgcov"> |
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| 281 | <term><filename class="libraryfile">libgcov</filename></term> |
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| 282 | <listitem> |
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| 283 | <para>Library that is linked into a program when |
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| 284 | <command>gcc</command> is instructed to enable profiling</para> |
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| 285 | <indexterm zone="ch-system-gcc libgcov"> |
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| 286 | <primary sortas="c-libgcov">libgcov</primary> |
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| 287 | </indexterm> |
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| 288 | </listitem> |
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| 289 | </varlistentry> |
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| 290 | |
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[188b6b2] | 291 | <varlistentry id="libgomp"> |
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| 292 | <term><filename class="libraryfile">libgomp</filename></term> |
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| 293 | <listitem> |
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| 294 | <para>GNU implementation of the OpenMP API for multi-platform |
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| 295 | shared-memory parallel programming in C/C++ and Fortran</para> |
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| 296 | <indexterm zone="ch-system-gcc libgomp"> |
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| 297 | <primary sortas="c-libgomp">libgomp</primary> |
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| 298 | </indexterm> |
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| 299 | </listitem> |
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[3d66e17] | 300 | </varlistentry> |
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| 301 | |
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| 302 | <varlistentry id="libiberty"> |
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| 303 | <term><filename class="libraryfile">libiberty</filename></term> |
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| 304 | <listitem> |
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| 305 | <para>Contains routines used by various GNU programs, including |
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| 306 | <command>getopt</command>, <command>obstack</command>, |
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| 307 | <command>strerror</command>, <command>strtol</command>, and |
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| 308 | <command>strtoul</command></para> |
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| 309 | <indexterm zone="ch-system-gcc libiberty"> |
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| 310 | <primary sortas="c-libiberty">libiberty</primary> |
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| 311 | </indexterm> |
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| 312 | </listitem> |
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[188b6b2] | 313 | </varlistentry> |
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| 314 | |
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[d1f79ab] | 315 | <varlistentry id="libitm"> |
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| 316 | <term><filename class="libraryfile">libitm</filename></term> |
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| 317 | <listitem> |
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| 318 | <para>The GNU Transactional Memory Library, which provides |
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| 319 | transaction support for accesses to a process's memory</para> |
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| 320 | <indexterm zone="ch-system-gcc libitm"> |
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| 321 | <primary sortas="c-libitm*">libitm*</primary> |
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| 322 | </indexterm> |
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| 323 | </listitem> |
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| 324 | </varlistentry> |
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| 325 | |
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[f6853e3] | 326 | <varlistentry id="liblsan"> |
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| 327 | <term><filename class="libraryfile">liblsan</filename></term> |
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[d1f79ab] | 328 | <listitem> |
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[f6853e3] | 329 | <para>The Leak Sanitizer runtime library</para> |
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| 330 | <indexterm zone="ch-system-gcc liblsan"> |
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| 331 | <primary sortas="c-liblsan">liblsan</primary> |
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[d1f79ab] | 332 | </indexterm> |
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| 333 | </listitem> |
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| 334 | </varlistentry> |
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| 335 | |
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[f6853e3] | 336 | <varlistentry id="liblto_plugin"> |
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| 337 | <term><filename class="libraryfile">liblto_plugin</filename></term> |
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[12a457e] | 338 | <listitem> |
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[f6853e3] | 339 | <para>Runtime library for GCC's link-time optimization plugin</para> |
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| 340 | <indexterm zone="ch-system-gcc liblto_plugin"> |
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| 341 | <primary sortas="c-liblto_plugin">liblto_plugin</primary> |
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[12a457e] | 342 | </indexterm> |
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| 343 | </listitem> |
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| 344 | </varlistentry> |
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| 345 | |
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[d1f79ab] | 346 | <varlistentry id="libquadmath"> |
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| 347 | <term><filename class="libraryfile">libquadmath</filename></term> |
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| 348 | <listitem> |
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| 349 | <para>The GCC Quad-Precision Math Libarary API</para> |
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| 350 | <indexterm zone="ch-system-gcc libquadmath"> |
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| 351 | <primary sortas="c-libquadmath*">libquadmath*</primary> |
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| 352 | </indexterm> |
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| 353 | </listitem> |
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| 354 | </varlistentry> |
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| 355 | |
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[188b6b2] | 356 | <varlistentry id="libssp"> |
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| 357 | <term><filename class="libraryfile">libssp</filename></term> |
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| 358 | <listitem> |
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| 359 | <para>Contains routines supporting GCC's stack-smashing protection |
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| 360 | functionality</para> |
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| 361 | <indexterm zone="ch-system-gcc libssp"> |
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| 362 | <primary sortas="c-libssp*">libssp*</primary> |
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| 363 | </indexterm> |
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| 364 | </listitem> |
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| 365 | </varlistentry> |
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| 366 | |
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[3f8be484] | 367 | <varlistentry id="libstdc"> |
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| 368 | <term><filename class="libraryfile">libstdc++</filename></term> |
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| 369 | <listitem> |
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| 370 | <para>The standard C++ library</para> |
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| 371 | <indexterm zone="ch-system-gcc libstdc"> |
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| 372 | <primary sortas="c-libstdc++">libstdc++</primary> |
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| 373 | </indexterm> |
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| 374 | </listitem> |
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| 375 | </varlistentry> |
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| 376 | |
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| 377 | <varlistentry id="libsupc"> |
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| 378 | <term><filename class="libraryfile">libsupc++</filename></term> |
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| 379 | <listitem> |
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| 380 | <para>Provides supporting routines for the C++ programming |
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| 381 | language</para> |
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| 382 | <indexterm zone="ch-system-gcc libsupc"> |
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| 383 | <primary sortas="c-libsupc++">libsupc++</primary> |
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| 384 | </indexterm> |
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| 385 | </listitem> |
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| 386 | </varlistentry> |
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| 387 | |
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[8c09b88] | 388 | <varlistentry id="libtsan"> |
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| 389 | <term><filename class="libraryfile">libtsan</filename></term> |
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| 390 | <listitem> |
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| 391 | <para>The Thread Sanitizer runtime library</para> |
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| 392 | <indexterm zone="ch-system-gcc libtsan"> |
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| 393 | <primary sortas="c-libtsan">libtsan</primary> |
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| 394 | </indexterm> |
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| 395 | </listitem> |
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| 396 | </varlistentry> |
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| 397 | |
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[f6853e3] | 398 | <varlistentry id="libubsan"> |
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| 399 | <term><filename class="libraryfile">libubsan</filename></term> |
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| 400 | <listitem> |
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| 401 | <para>The Undefined Beahvior Sanitizer runtime library</para> |
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| 402 | <indexterm zone="ch-system-gcc libubsan"> |
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| 403 | <primary sortas="c-libubsan">libubsan</primary> |
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| 404 | </indexterm> |
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| 405 | </listitem> |
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| 406 | </varlistentry> |
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| 407 | |
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| 408 | <varlistentry id="libvtv"> |
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| 409 | <term><filename class="libraryfile">libvtv</filename></term> |
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| 410 | <listitem> |
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| 411 | <para>The Virtual Table Verification runtime library</para> |
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| 412 | <indexterm zone="ch-system-gcc libvtv"> |
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| 413 | <primary sortas="c-libvtv">libvtv</primary> |
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| 414 | </indexterm> |
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| 415 | </listitem> |
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| 416 | </varlistentry> |
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| 417 | |
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[3f8be484] | 418 | </variablelist> |
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| 419 | |
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| 420 | </sect2> |
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| 421 | |
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| 422 | </sect1> |
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