[52d29f7] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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[6732c094] | 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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[52d29f7] | 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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| 5 | %general-entities;
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| 6 |
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[8dfc5c3] | 7 | <!ENTITY gcc-download-http "&gnu-http;/gcc/gcc-&gcc-version;/gcc-&gcc-version;.tar.xz">
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| 8 | <!ENTITY gcc-download-ftp "&gnu-ftp;/gcc/gcc-&gcc-version;/gcc-&gcc-version;.tar.xz">
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[1821a97] | 9 | <!ENTITY gcc-md5sum "6069ae3737cf02bf2cb44a391ef0e937">
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| 10 | <!ENTITY gcc-size "67 MB">
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[65374012] | 11 | <!ENTITY gcc-buildsize "9.2 GB (2.1 GB installed with all listed languages; add 823 MB for tests)">
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[1821a97] | 12 | <!ENTITY gcc-time "24 SBU (with parallelism=4, add 51 SBU for tests with parallelism=4)">
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[52d29f7] | 13 | ]>
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| 14 |
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[58bd309a] | 15 | <sect1 id="gcc" xreflabel="GCC-&gcc-version;">
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[70e3220] | 16 | <?dbhtml filename="gcc.html" ?>
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| 17 |
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| 18 | <sect1info>
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| 19 | <othername>$LastChangedBy$</othername>
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| 20 | <date>$Date$</date>
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| 21 | </sect1info>
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| 22 |
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| 23 | <title>GCC-&gcc-version;</title>
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| 24 |
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| 25 | <indexterm zone="gcc">
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[ae0673a] | 26 | <primary sortas="a-gcc-5-0">GCC-&gcc-version;</primary>
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[70e3220] | 27 | </indexterm>
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| 28 |
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| 29 | <sect2 role="package">
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| 30 | <title>Introduction to GCC</title>
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| 31 |
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[ae0673a] | 32 | <para>
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| 33 | The <application>GCC</application> package contains the GNU Compiler
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| 34 | Collection. This page describes the installation of compilers for the
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| 35 | following languages: C, C++, Fortran, Objective C, Objective C++, and Go.
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[0a4d6ef0] | 36 | <!--One additional language, Ada, is available in the collection. It has
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[0f18e26] | 37 | a binary bootstrap requirement for the first installation, so it is
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[0a4d6ef0] | 38 | described on a separate page (<xref linkend="gcc-ada"/>) but can be added
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[0f18e26] | 39 | here if you are performing a rebuild or upgrade. Since C and C++ are
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| 40 | installed in LFS, this page is either for upgrading C and C++, or for
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[0a4d6ef0] | 41 | installing additional compilers.-->
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[ae0673a] | 42 | </para>
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[5512e64] | 43 |
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[38489aa0] | 44 | &lfs84_checked;
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[625d5fe5] | 45 |
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[636acbb1] | 46 | <caution>
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[ae0673a] | 47 | <para>
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| 48 | If you are upgrading <application>GCC</application> from any other
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| 49 | version prior to &gcc-version;, then you must be careful compiling 3rd
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| 50 | party kernel modules. You should ensure that the kernel and all its
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| 51 | native modules are also compiled using the same version of
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| 52 | <application>GCC</application> that you use to build the 3rd party module.
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| 53 | This issue does not affect native kernel (and kernel modules) updates,
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| 54 | as the instructions below are a complete reinstallation of
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| 55 | <application>GCC</application>. If you have existing 3rd party modules
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| 56 | installed, ensure they are recompiled using the updated version of
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| 57 | <application>GCC</application>. As always, never update the kernel
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| 58 | headers from the ones used when <application>Glibc</application> was
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| 59 | compiled during LFS.
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| 60 | </para>
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| 61 |
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| 62 | <para>
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[e9cab664] | 63 | Some system headers need to be fixed to be used with GCC. This is done
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| 64 | during the installation of GCC, and the <quote>fixed</quote> headers
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| 65 | are installed in <filename class="directory">
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| 66 | /usr/lib/gcc/<machine triplet>/<GCC version>/include-fixed
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| 67 | </filename>. This is harmless if GCC is built during the LFS stage. But
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| 68 | if you reinstall GCC in BLFS, some of the BLFS packages may be
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| 69 | <quote>fixed</quote>. If one of those packages is reinstalled
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| 70 | afterwards, the <quote>fixed</quote> headers are not updated, which may
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| 71 | lead to version mismatches. In case that happens, the
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| 72 | <quote>fixed</quote> headers must be updated by running (as
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| 73 | <systemitem class="username">root</systemitem>):
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| 74 | <command>
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[da8e9f9] | 75 | /usr/libexec/gcc/x86_64-pc-linux-gnu/&gcc-version;/install-tools/mkheaders
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[e9cab664] | 76 | </command>. The machine triplet may be different on a 32bit system.
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[ae0673a] | 77 | </para>
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[636acbb1] | 78 | </caution>
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| 79 |
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[70e3220] | 80 | <bridgehead renderas="sect3">Package Information</bridgehead>
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| 81 | <itemizedlist spacing="compact">
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| 82 | <listitem>
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[ae0673a] | 83 | <para>
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| 84 | Download (HTTP): <ulink url="&gcc-download-http;"/>
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| 85 | </para>
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[70e3220] | 86 | </listitem>
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| 87 | <listitem>
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[ae0673a] | 88 | <para>
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| 89 | Download (FTP): <ulink url="&gcc-download-ftp;"/>
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| 90 | </para>
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[70e3220] | 91 | </listitem>
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| 92 | <listitem>
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[ae0673a] | 93 | <para>
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| 94 | Download MD5 sum: &gcc-md5sum;
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| 95 | </para>
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[70e3220] | 96 | </listitem>
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| 97 | <listitem>
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[ae0673a] | 98 | <para>
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| 99 | Download size: &gcc-size;
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| 100 | </para>
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[70e3220] | 101 | </listitem>
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| 102 | <listitem>
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[ae0673a] | 103 | <para>
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| 104 | Estimated disk space required: &gcc-buildsize;
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| 105 | </para>
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[70e3220] | 106 | </listitem>
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| 107 | <listitem>
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[ae0673a] | 108 | <para>
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| 109 | Estimated build time: &gcc-time;
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| 110 | </para>
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[70e3220] | 111 | </listitem>
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| 112 | </itemizedlist>
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[ae0673a] | 113 |
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[87532434] | 114 | <!-- <bridgehead renderas="sect3">Additional Downloads</bridgehead>
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[18310d86] | 115 | <itemizedlist spacing="compact">
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| 116 | <listitem>
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| 117 | <para>
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| 118 | Required patch:
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[5fd1f25b] | 119 | <ulink url="&patch-root;/gcc-&gcc-version;-upstream_fixes-1.patch"/>
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[18310d86] | 120 | </para>
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| 121 | </listitem>
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| 122 | </itemizedlist>
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[87532434] | 123 | -->
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[8ddc247] | 124 |
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[70e3220] | 125 | <bridgehead renderas="sect3">GCC Dependencies</bridgehead>
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| 126 |
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[7cadfea] | 127 | <bridgehead renderas="sect4">Recommended</bridgehead>
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| 128 | <para role="recommended">
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[eb631ac] | 129 | <xref linkend="dejagnu"/>, for tests
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[7cadfea] | 130 | </para>
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| 131 |
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[a7e88c5c] | 132 | <bridgehead renderas="sect4">Optional</bridgehead>
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| 133 | <para role="optional">
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[1a8a995] | 134 | <xref linkend="gdb"/>,
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| 135 | <xref linkend="valgrind"/> (for tests), and
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| 136 | <ulink url="https://repo.or.cz/isl.git">ISL</ulink> (to enable graphite optimization)
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[a7e88c5c] | 137 | </para>
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| 138 |
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[ae0673a] | 139 | <para condition="html" role="usernotes">
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| 140 | User Notes: <ulink url="&blfs-wiki;/gcc"/>
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| 141 | </para>
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[1039de3] | 142 |
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[70e3220] | 143 | </sect2>
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[034eda7] | 144 |
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[70e3220] | 145 | <sect2 role="installation">
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| 146 | <title>Installation of GCC</title>
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| 147 |
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| 148 | <important>
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[ae0673a] | 149 | <para>
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| 150 | Even if you specify only languages other than C and C++ to the
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| 151 | <command>./configure</command> command below, the
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| 152 | installation process will overwrite your existing
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| 153 | <application>GCC</application> C and C++ compilers and libraries.
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| 154 | Having the <application>Tcl</application>,
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| 155 | <application>Expect</application> and <application>DejaGnu</application>
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| 156 | packages installed before beginning the build is highly recommended so
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| 157 | you can run the full suite of tests.
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| 158 | </para>
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| 159 |
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| 160 | <para>
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| 161 | Do not continue with the <command>make install</command> command
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| 162 | until you are confident the build was successful. You can compare your
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| 163 | test results with those found at <ulink
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| 164 | url="http://gcc.gnu.org/ml/gcc-testresults/"/>. You may also want to
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| 165 | refer to the information found in the <application>GCC</application>
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| 166 | section of Chapter 6 in the LFS book (<ulink
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| 167 | url="&lfs-root;/chapter06/gcc.html"/>).
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| 168 | </para>
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[70e3220] | 169 | </important>
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| 170 |
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[ae0673a] | 171 | <para>
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| 172 | The instructions below are intentionally performing a
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| 173 | <quote>bootstrap</quote> process. Bootstrapping is needed for robustness
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| 174 | and is highly recommended when upgrading the compilers version. To disable
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| 175 | bootstrap anyways, add <parameter>--disable-bootstrap</parameter> to the
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| 176 | <command>./configure</command> options below.
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| 177 | </para>
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[c6bfee88] | 178 |
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[ae0673a] | 179 | <para>
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| 180 | Install <application>GCC</application> by running the following commands:
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| 181 | </para>
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| 182 |
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[92245989] | 183 | <screen><userinput>case $(uname -m) in
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| 184 | x86_64)
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| 185 | sed -e '/m64=/s/lib64/lib/' \
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| 186 | -i.orig gcc/config/i386/t-linux64
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| 187 | ;;
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| 188 | esac
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| 189 |
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| 190 | mkdir build &&
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[0e64979] | 191 | cd build &&
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[2d488eb] | 192 |
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[0e64979] | 193 | ../configure \
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[2d488eb] | 194 | --prefix=/usr \
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| 195 | --disable-multilib \
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[3e82eae] | 196 | --disable-libmpx \
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[2d488eb] | 197 | --with-system-zlib \
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| 198 | --enable-languages=c,c++,fortran,go,objc,obj-c++ &&
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[7cadfea] | 199 | make</userinput></screen>
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[5512e64] | 200 |
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[ae0673a] | 201 | <para>
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| 202 | If you have installed additional packages such as
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| 203 | <application>Valgrind</application> and <application>GDB</application>,
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| 204 | the <application>GCC</application> part of the testsuite will run more
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| 205 | tests than in LFS. Some of those will report FAIL and others XPASS
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[a7e88c5c] | 206 | (pass when expected to FAIL). As of gcc-8.3.0, the -flto suite
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| 207 | is known to fail, as well as miscellaneous failures throughout the rest
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[1a8a995] | 208 | of the test suite. If all the compilers below are built, there will be
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[1821a97] | 209 | slightly over 100 failures out of over 360,000 tests.
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| 210 | To run the tests, issue:
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[ae0673a] | 211 | </para>
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[d3757f1c] | 212 |
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[7cadfea] | 213 | <screen><userinput>ulimit -s 32768 &&
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[b10cfc81] | 214 | make -k check</userinput></screen>
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| 215 | <!-- The command above may error out, so using && may prevent the summary
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| 216 | to be run. -->
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| 217 |
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[ae0673a] | 218 | <para>
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| 219 | The tests are very long, and the results may be hard to find in the
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| 220 | logs, specially if you use parallel jobs with make. You can get a summary
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| 221 | of the tests with:
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| 222 | </para>
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[5512e64] | 223 |
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[0e64979] | 224 | <screen><userinput>../contrib/test_summary</userinput></screen>
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[8c9ec303] | 225 |
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[ae0673a] | 226 | <para>
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| 227 | Now, as the <systemitem class="username">root</systemitem> user:
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| 228 | </para>
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[8c9ec303] | 229 |
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[70e3220] | 230 | <screen role="root"><userinput>make install &&
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[5512e64] | 231 |
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[7cadfea] | 232 | mkdir -pv /usr/share/gdb/auto-load/usr/lib &&
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| 233 | mv -v /usr/lib/*gdb.py /usr/share/gdb/auto-load/usr/lib &&
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| 234 |
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[38485e5c] | 235 | chown -v -R root:root \
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[2d488eb] | 236 | /usr/lib/gcc/*linux-gnu/&gcc-version;/include{,-fixed}</userinput></screen>
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[f182eed] | 237 |
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[ae0673a] | 238 | <para>
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| 239 | Some packages expect to find the C preprocessor in
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| 240 | <filename class="directory">/lib</filename> or may refer to the C compiler
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| 241 | under the name <command>cc</command>. The following symbolic links are not
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| 242 | needed if you have followed the LFS instructions, since they
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| 243 | have been already created. If you do not have them on your system, issue
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| 244 | as the <systemitem class="username">root</systemitem> user:
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| 245 | </para>
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[70e3220] | 246 |
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[ae0673a] | 247 | <screen role="root"><userinput>ln -v -sf ../usr/bin/cpp /lib &&
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| 248 | ln -v -sf gcc /usr/bin/cc &&
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| 249 | install -v -dm755 /usr/lib/bfd-plugins &&
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| 250 | ln -sfv ../../libexec/gcc/$(gcc -dumpmachine)/&gcc-version;/liblto_plugin.so /usr/lib/bfd-plugins/</userinput></screen>
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[034eda7] | 251 |
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[70e3220] | 252 | </sect2>
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| 253 |
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| 254 | <sect2 role="commands">
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| 255 | <title>Command Explanations</title>
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[8ddc247] | 256 |
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[2d488eb] | 257 | <para>
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[0e64979] | 258 | <command>mkdir build; cd build</command>: The
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[2d488eb] | 259 | <application>GCC</application> documentation recommends
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| 260 | building the package in a dedicated build directory.
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| 261 | </para>
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[70e3220] | 262 |
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[2d488eb] | 263 | <para>
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| 264 | <parameter>--disable-multilib</parameter>: This parameter ensures
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| 265 | that files are created for the specific architecture of your computer.
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| 266 | </para>
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[7cadfea] | 267 |
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[2d488eb] | 268 | <para>
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[fa200b8] | 269 | <parameter>--with-system-zlib</parameter>: Uses the system
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[2d488eb] | 270 | <application>zlib</application> instead of the bundled one.
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| 271 | <application>zlib</application> is used for compressing
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| 272 | and uncompressing <application>GCC</application>'s intermediate
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| 273 | language in LTO (Link Time Optimization) object files.
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| 274 | </para>
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[034eda7] | 275 |
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[800c9c3] | 276 | <para>
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[2d488eb] | 277 | <parameter>--enable-languages=c,c++,fortran,go,objc,obj-c++</parameter>:
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| 278 | This command identifies which languages to build. You may modify
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[9562b375] | 279 | this command to remove undesired languages. Two other languages can be
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[0f18e26] | 280 | added, besides ADA (see introduction above): BRIG (add
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[3d9141c] | 281 | <parameter>brig</parameter> to the list of enabled languages), a binary
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[9562b375] | 282 | format for HSAIL (Heterogeneous System Architecture Intermediate
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[3d9141c] | 283 | Language), and JIT (add <parameter>jit</parameter> to the list of enabled
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[0f18e26] | 284 | languages), a library which can be linked into interpreters that want to
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| 285 | generate machine code <quote>on the fly</quote> at run-time. They have not
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| 286 | been tested by the BLFS developers.
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[2d488eb] | 287 | </para>
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[a7e88c5c] | 288 | <!-- It's been three major versions now, and many years.
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| 289 | Commenting out unless needed somewhere. -renodr
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[ae0673a] | 290 | <para>
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[a7e88c5c] | 291 | <option>- -with-default-libstdcxx-abi=gcc4-compatible</option>: Use this
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[0e64979] | 292 | switch if you are upgrading from a <application>GCC</application>
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| 293 | version prior to 5.1.0, and you do not want to recompile all the
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| 294 | libraries written in C++.
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[ae0673a] | 295 | </para>
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[a7e88c5c] | 296 | -->
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[ae0673a] | 297 |
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[2d488eb] | 298 | <para>
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| 299 | <command>ulimit -s 32768</command>: This command prevents several
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| 300 | tests from running out of stack space.
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| 301 | </para>
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| 302 |
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| 303 | <para>
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| 304 | <command>make -k check</command>: This command runs the test suite
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| 305 | without stopping if any errors are encountered.
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| 306 | </para>
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| 307 |
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| 308 | <para>
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[9562b375] | 309 | <command>../contrib/test_summary</command>: This command will produce
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| 310 | a summary of the test suite results. You can append <command>| grep
|
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| 311 | -A7 Summ</command> to the command to produce an even more condensed
|
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| 312 | version of the summary. You may also wish to redirect the output
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[2d488eb] | 313 | to a file for review and comparison later on.
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| 314 | </para>
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| 315 |
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| 316 | <para>
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| 317 | <command>mv -v /usr/lib/*gdb.py ...</command>: The installation
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| 318 | stage puts some files used by <application>gdb</application> under the
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| 319 | <filename class="directory">/usr/lib</filename> directory. This generates
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| 320 | spurious error messages when performing <command>ldconfig</command>. This
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| 321 | command moves the files to another location.
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| 322 | </para>
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| 323 |
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| 324 | <para>
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| 325 | <command>chown -v -R root:root /usr/lib/gcc/*linux-gnu/...</command>:
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| 326 | If the package is built by a user other than root, the ownership of the
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| 327 | installed <filename class="directory">include</filename> directory (and
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| 328 | its content) will be incorrect. This command changes the ownership to the
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| 329 | <systemitem class="username">root</systemitem> user and group.
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| 330 | </para>
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[034eda7] | 331 |
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[70e3220] | 332 | </sect2>
|
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| 333 |
|
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| 334 | <sect2 role="content">
|
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| 335 | <title>Contents</title>
|
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| 336 |
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[ae0673a] | 337 | <para>
|
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| 338 | Some program and library names and descriptions are not listed here,
|
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| 339 | but can be found at
|
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| 340 | <ulink url="&lfs-root;/chapter06/gcc.html#contents-gcc"/> as they were
|
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| 341 | initially installed during the building of LFS.
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| 342 | </para>
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[2d488eb] | 343 |
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[70e3220] | 344 | <segmentedlist>
|
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| 345 | <segtitle>Installed Programs</segtitle>
|
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| 346 | <segtitle>Installed Libraries</segtitle>
|
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| 347 | <segtitle>Installed Directories</segtitle>
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| 348 |
|
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| 349 | <seglistitem>
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[7cadfea] | 350 | <seg>
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[d5e9aa8] | 351 | gccgo, go, gofmt, and gfortran, hard-linked to architecture specific
|
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[87532434] | 352 | names
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[7cadfea] | 353 | </seg>
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| 354 | <seg>
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[d7d743f0] | 355 | libgfortran.{so,a},
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[9562b375] | 356 | libgo.{so,a}, libgobegin.a, libgolibbegin.a,
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[d7d743f0] | 357 | libobjc.{so,a}, and numerous other run-time libraries and executables
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[7cadfea] | 358 | </seg>
|
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| 359 | <seg>
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[d5e9aa8] | 360 | /usr/lib/go
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[7cadfea] | 361 | </seg>
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[70e3220] | 362 | </seglistitem>
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| 363 | </segmentedlist>
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| 364 |
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| 365 | <variablelist>
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| 366 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 367 | <?dbfo list-presentation="list"?>
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| 368 | <?dbhtml list-presentation="table"?>
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| 369 |
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[034eda7] | 370 | <varlistentry id="gccgo">
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| 371 | <term><command>gccgo</command></term>
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| 372 | <listitem>
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[ae0673a] | 373 | <para>
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[5b55f9b3] | 374 | is a GCC-based compiler for the <application>Go</application>
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| 375 | language.
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[ae0673a] | 376 | </para>
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[034eda7] | 377 | <indexterm zone="gcc gccgo">
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| 378 | <primary sortas="b-gccgo">gccgo</primary>
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[70e3220] | 379 | </indexterm>
|
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| 380 | </listitem>
|
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| 381 | </varlistentry>
|
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| 382 |
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[87532434] | 383 | <varlistentry id="go">
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| 384 | <term><command>go</command></term>
|
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| 385 | <listitem>
|
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| 386 | <para>
|
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| 387 | is a tool for managing <application>Go</application> source code.
|
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| 388 | </para>
|
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| 389 | <indexterm zone="gcc go">
|
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| 390 | <primary sortas="b-go">go</primary>
|
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| 391 | </indexterm>
|
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| 392 | </listitem>
|
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| 393 | </varlistentry>
|
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| 394 |
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| 395 | <varlistentry id="gofmt">
|
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| 396 | <term><command>gofmt</command></term>
|
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| 397 | <listitem>
|
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| 398 | <para>
|
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| 399 | is a tool for formatting <application>Go</application> source code.
|
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| 400 | </para>
|
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| 401 | <indexterm zone="gcc gofmt">
|
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| 402 | <primary sortas="b-gofmt">gofmt</primary>
|
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| 403 | </indexterm>
|
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| 404 | </listitem>
|
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| 405 | </varlistentry>
|
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| 406 |
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[800c9c3] | 407 | <varlistentry id="gfortran">
|
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| 408 | <term><command>gfortran</command></term>
|
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| 409 | <listitem>
|
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[ae0673a] | 410 | <para>
|
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| 411 | is a GCC-based compiler for the <application>Fortran</application>
|
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| 412 | language.
|
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| 413 | </para>
|
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[800c9c3] | 414 | <indexterm zone="gcc gfortran">
|
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| 415 | <primary sortas="b-gfortran">gfortran</primary>
|
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| 416 | </indexterm>
|
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| 417 | </listitem>
|
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| 418 | </varlistentry>
|
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| 419 |
|
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[70e3220] | 420 | </variablelist>
|
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| 421 |
|
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| 422 | </sect2>
|
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[1a686a1] | 423 |
|
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| 424 | </sect1>
|
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