[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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[3b187ea] | 9 | <!ENTITY gcc-md5sum "3818ad8600447f05349098232c2ddc78">
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[1821a97] | 10 | <!ENTITY gcc-size "67 MB">
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[3b187ea] | 11 | <!ENTITY gcc-buildsize "9.9 GB (2.4 GB installed with all listed languages; add 930 MB for tests)">
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| 12 | <!ENTITY gcc-time "25 SBU (with parallelism=4, add 62 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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[0f1cd72e] | 35 | following languages: C, C++, D, 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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[3b187ea] | 44 | &lfs90_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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[03b67d3] | 190 | sed -e '1161 s|^|//|' \
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| 191 | -i libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc
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| 192 |
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[adbf61f] | 193 | mkdir build &&
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| 194 | cd build &&
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| 195 |
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| 196 | ../configure \
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| 197 | --prefix=/usr \
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| 198 | --disable-multilib \
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| 199 | --with-system-zlib \
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| 200 | --enable-languages=c,c++,d,fortran,go,objc,obj-c++ &&
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[7cadfea] | 201 | make</userinput></screen>
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[5512e64] | 202 |
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[ae0673a] | 203 | <para>
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| 204 | If you have installed additional packages such as
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| 205 | <application>Valgrind</application> and <application>GDB</application>,
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| 206 | the <application>GCC</application> part of the testsuite will run more
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| 207 | tests than in LFS. Some of those will report FAIL and others XPASS
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[3b187ea] | 208 | (pass when expected to FAIL). As of gcc-9.2.0, about 100 FAIL occur
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| 209 | in the <quote>guality</quote> suite, as well as miscellaneous failures
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| 210 | throughout the rest of the test suite. If all the compilers above are
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| 211 | built, there will be slightly over 120 unexpected failures out of over
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| 212 | 390,000 tests. To run the tests, issue:
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[ae0673a] | 213 | </para>
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[d3757f1c] | 214 |
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[7cadfea] | 215 | <screen><userinput>ulimit -s 32768 &&
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[b10cfc81] | 216 | make -k check</userinput></screen>
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| 217 | <!-- The command above may error out, so using && may prevent the summary
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| 218 | to be run. -->
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| 219 |
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[ae0673a] | 220 | <para>
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| 221 | The tests are very long, and the results may be hard to find in the
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| 222 | logs, specially if you use parallel jobs with make. You can get a summary
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| 223 | of the tests with:
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| 224 | </para>
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[5512e64] | 225 |
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[0e64979] | 226 | <screen><userinput>../contrib/test_summary</userinput></screen>
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[8c9ec303] | 227 |
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[ae0673a] | 228 | <para>
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| 229 | Now, as the <systemitem class="username">root</systemitem> user:
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| 230 | </para>
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[8c9ec303] | 231 |
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[70e3220] | 232 | <screen role="root"><userinput>make install &&
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[5512e64] | 233 |
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[7cadfea] | 234 | mkdir -pv /usr/share/gdb/auto-load/usr/lib &&
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| 235 | mv -v /usr/lib/*gdb.py /usr/share/gdb/auto-load/usr/lib &&
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| 236 |
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[38485e5c] | 237 | chown -v -R root:root \
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[09aa3292] | 238 | /usr/lib/gcc/*linux-gnu/&gcc-version;/include{,-fixed}
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| 239 |
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| 240 | rm -rf /usr/lib/gcc/$(gcc -dumpmachine)/&gcc-version;/include-fixed/bits/</userinput></screen>
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[f182eed] | 241 |
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[ae0673a] | 242 | <para>
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| 243 | Some packages expect to find the C preprocessor in
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| 244 | <filename class="directory">/lib</filename> or may refer to the C compiler
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| 245 | under the name <command>cc</command>. The following symbolic links are not
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| 246 | needed if you have followed the LFS instructions, since they
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| 247 | have been already created. If you do not have them on your system, issue
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| 248 | as the <systemitem class="username">root</systemitem> user:
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| 249 | </para>
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[70e3220] | 250 |
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[ae0673a] | 251 | <screen role="root"><userinput>ln -v -sf ../usr/bin/cpp /lib &&
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| 252 | ln -v -sf gcc /usr/bin/cc &&
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| 253 | install -v -dm755 /usr/lib/bfd-plugins &&
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| 254 | ln -sfv ../../libexec/gcc/$(gcc -dumpmachine)/&gcc-version;/liblto_plugin.so /usr/lib/bfd-plugins/</userinput></screen>
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[034eda7] | 255 |
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[70e3220] | 256 | </sect2>
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| 257 |
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| 258 | <sect2 role="commands">
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| 259 | <title>Command Explanations</title>
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[8ddc247] | 260 |
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[2d488eb] | 261 | <para>
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[0e64979] | 262 | <command>mkdir build; cd build</command>: The
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[2d488eb] | 263 | <application>GCC</application> documentation recommends
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| 264 | building the package in a dedicated build directory.
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| 265 | </para>
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[70e3220] | 266 |
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[2d488eb] | 267 | <para>
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| 268 | <parameter>--disable-multilib</parameter>: This parameter ensures
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| 269 | that files are created for the specific architecture of your computer.
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| 270 | </para>
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[7cadfea] | 271 |
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[2d488eb] | 272 | <para>
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[fa200b8] | 273 | <parameter>--with-system-zlib</parameter>: Uses the system
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[2d488eb] | 274 | <application>zlib</application> instead of the bundled one.
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| 275 | <application>zlib</application> is used for compressing
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| 276 | and uncompressing <application>GCC</application>'s intermediate
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| 277 | language in LTO (Link Time Optimization) object files.
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| 278 | </para>
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[034eda7] | 279 |
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[800c9c3] | 280 | <para>
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[adbf61f] | 281 | <parameter>--enable-languages=c,c++,d,fortran,go,objc,obj-c++</parameter>:
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[2d488eb] | 282 | This command identifies which languages to build. You may modify
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[9562b375] | 283 | this command to remove undesired languages. Two other languages can be
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[0f18e26] | 284 | added, besides ADA (see introduction above): BRIG (add
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[3d9141c] | 285 | <parameter>brig</parameter> to the list of enabled languages), a binary
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[9562b375] | 286 | format for HSAIL (Heterogeneous System Architecture Intermediate
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[3d9141c] | 287 | Language), and JIT (add <parameter>jit</parameter> to the list of enabled
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[0f18e26] | 288 | languages), a library which can be linked into interpreters that want to
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| 289 | generate machine code <quote>on the fly</quote> at run-time. They have not
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| 290 | been tested by the BLFS developers.
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[2d488eb] | 291 | </para>
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[a7e88c5c] | 292 | <!-- It's been three major versions now, and many years.
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| 293 | Commenting out unless needed somewhere. -renodr
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[ae0673a] | 294 | <para>
|
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[a7e88c5c] | 295 | <option>- -with-default-libstdcxx-abi=gcc4-compatible</option>: Use this
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[0e64979] | 296 | switch if you are upgrading from a <application>GCC</application>
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| 297 | version prior to 5.1.0, and you do not want to recompile all the
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| 298 | libraries written in C++.
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[ae0673a] | 299 | </para>
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[a7e88c5c] | 300 | -->
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[ae0673a] | 301 |
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[2d488eb] | 302 | <para>
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| 303 | <command>ulimit -s 32768</command>: This command prevents several
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| 304 | tests from running out of stack space.
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| 305 | </para>
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| 306 |
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| 307 | <para>
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| 308 | <command>make -k check</command>: This command runs the test suite
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| 309 | without stopping if any errors are encountered.
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| 310 | </para>
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| 311 |
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| 312 | <para>
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[9562b375] | 313 | <command>../contrib/test_summary</command>: This command will produce
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| 314 | a summary of the test suite results. You can append <command>| grep
|
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| 315 | -A7 Summ</command> to the command to produce an even more condensed
|
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| 316 | version of the summary. You may also wish to redirect the output
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[2d488eb] | 317 | to a file for review and comparison later on.
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| 318 | </para>
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| 319 |
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| 320 | <para>
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| 321 | <command>mv -v /usr/lib/*gdb.py ...</command>: The installation
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| 322 | stage puts some files used by <application>gdb</application> under the
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| 323 | <filename class="directory">/usr/lib</filename> directory. This generates
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| 324 | spurious error messages when performing <command>ldconfig</command>. This
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| 325 | command moves the files to another location.
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| 326 | </para>
|
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| 327 |
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| 328 | <para>
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| 329 | <command>chown -v -R root:root /usr/lib/gcc/*linux-gnu/...</command>:
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| 330 | If the package is built by a user other than root, the ownership of the
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| 331 | installed <filename class="directory">include</filename> directory (and
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| 332 | its content) will be incorrect. This command changes the ownership to the
|
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| 333 | <systemitem class="username">root</systemitem> user and group.
|
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| 334 | </para>
|
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[034eda7] | 335 |
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[09aa3292] | 336 | <para>
|
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| 337 | <command>rm -rf .../include-fixed/bits/</command>: Remove an erroneous
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| 338 | file in gcc added by the fixincludes process.
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| 339 | </para>
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| 340 |
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[70e3220] | 341 | </sect2>
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| 342 |
|
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| 343 | <sect2 role="content">
|
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| 344 | <title>Contents</title>
|
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| 345 |
|
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[ae0673a] | 346 | <para>
|
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| 347 | Some program and library names and descriptions are not listed here,
|
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| 348 | but can be found at
|
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| 349 | <ulink url="&lfs-root;/chapter06/gcc.html#contents-gcc"/> as they were
|
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| 350 | initially installed during the building of LFS.
|
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| 351 | </para>
|
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[2d488eb] | 352 |
|
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[70e3220] | 353 | <segmentedlist>
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| 354 | <segtitle>Installed Programs</segtitle>
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| 355 | <segtitle>Installed Libraries</segtitle>
|
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| 356 | <segtitle>Installed Directories</segtitle>
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| 357 |
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| 358 | <seglistitem>
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[7cadfea] | 359 | <seg>
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[adbf61f] | 360 | gccgo, go, gofmt, gdc and gfortran, hard-linked to architecture
|
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| 361 | specific names
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[7cadfea] | 362 | </seg>
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| 363 | <seg>
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[d7d743f0] | 364 | libgfortran.{so,a},
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[adbf61f] | 365 | libgdruntime.{so,a}, libgphobos.{so,a}
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[9562b375] | 366 | libgo.{so,a}, libgobegin.a, libgolibbegin.a,
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[d7d743f0] | 367 | libobjc.{so,a}, and numerous other run-time libraries and executables
|
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[7cadfea] | 368 | </seg>
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| 369 | <seg>
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[d5e9aa8] | 370 | /usr/lib/go
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[7cadfea] | 371 | </seg>
|
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[70e3220] | 372 | </seglistitem>
|
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| 373 | </segmentedlist>
|
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| 374 |
|
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| 375 | <variablelist>
|
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| 376 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
|
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| 377 | <?dbfo list-presentation="list"?>
|
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| 378 | <?dbhtml list-presentation="table"?>
|
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| 379 |
|
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[034eda7] | 380 | <varlistentry id="gccgo">
|
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| 381 | <term><command>gccgo</command></term>
|
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| 382 | <listitem>
|
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[ae0673a] | 383 | <para>
|
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[5b55f9b3] | 384 | is a GCC-based compiler for the <application>Go</application>
|
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| 385 | language.
|
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[ae0673a] | 386 | </para>
|
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[034eda7] | 387 | <indexterm zone="gcc gccgo">
|
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| 388 | <primary sortas="b-gccgo">gccgo</primary>
|
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[70e3220] | 389 | </indexterm>
|
---|
| 390 | </listitem>
|
---|
| 391 | </varlistentry>
|
---|
| 392 |
|
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[87532434] | 393 | <varlistentry id="go">
|
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| 394 | <term><command>go</command></term>
|
---|
| 395 | <listitem>
|
---|
| 396 | <para>
|
---|
| 397 | is a tool for managing <application>Go</application> source code.
|
---|
| 398 | </para>
|
---|
| 399 | <indexterm zone="gcc go">
|
---|
| 400 | <primary sortas="b-go">go</primary>
|
---|
| 401 | </indexterm>
|
---|
| 402 | </listitem>
|
---|
| 403 | </varlistentry>
|
---|
| 404 |
|
---|
| 405 | <varlistentry id="gofmt">
|
---|
| 406 | <term><command>gofmt</command></term>
|
---|
| 407 | <listitem>
|
---|
| 408 | <para>
|
---|
| 409 | is a tool for formatting <application>Go</application> source code.
|
---|
| 410 | </para>
|
---|
| 411 | <indexterm zone="gcc gofmt">
|
---|
| 412 | <primary sortas="b-gofmt">gofmt</primary>
|
---|
| 413 | </indexterm>
|
---|
| 414 | </listitem>
|
---|
| 415 | </varlistentry>
|
---|
| 416 |
|
---|
[adbf61f] | 417 | <varlistentry id="gdc">
|
---|
| 418 | <term><command>gdc</command></term>
|
---|
| 419 | <listitem>
|
---|
| 420 | <para>
|
---|
| 421 | is a GCC-based compiler for the <application>D</application>
|
---|
| 422 | language.
|
---|
| 423 | </para>
|
---|
| 424 | <indexterm zone="gcc gdc">
|
---|
| 425 | <primary sortas="b-gdc">gdc</primary>
|
---|
| 426 | </indexterm>
|
---|
| 427 | </listitem>
|
---|
| 428 | </varlistentry>
|
---|
| 429 |
|
---|
[800c9c3] | 430 | <varlistentry id="gfortran">
|
---|
| 431 | <term><command>gfortran</command></term>
|
---|
| 432 | <listitem>
|
---|
[ae0673a] | 433 | <para>
|
---|
| 434 | is a GCC-based compiler for the <application>Fortran</application>
|
---|
| 435 | language.
|
---|
| 436 | </para>
|
---|
[800c9c3] | 437 | <indexterm zone="gcc gfortran">
|
---|
| 438 | <primary sortas="b-gfortran">gfortran</primary>
|
---|
| 439 | </indexterm>
|
---|
| 440 | </listitem>
|
---|
| 441 | </varlistentry>
|
---|
| 442 |
|
---|
[70e3220] | 443 | </variablelist>
|
---|
| 444 |
|
---|
| 445 | </sect2>
|
---|
[1a686a1] | 446 |
|
---|
| 447 | </sect1>
|
---|