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