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git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@19118 af4574ff-66df-0310-9fd7-8a98e5e911e0
254 lines
8.6 KiB
XML
254 lines
8.6 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../../general.ent">
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%general-entities;
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<!-- for the moment, this is internally llvm-old but visibly llvm3
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so that when rust eventually understands a less-old version the
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visible fields, and the page itself, can be moved to that newer
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number -->
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<!ENTITY llvm-old-download-http "http://llvm.org/releases/&llvm-old-version;/llvm-&llvm-old-version;.src.tar.xz">
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<!ENTITY llvm-old-download-ftp " ">
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<!ENTITY llvm-old-md5sum "3259018a7437e157f3642df80f1983ea">
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<!ENTITY llvm-old-size "18 MB">
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<!ENTITY llvm-old-buildsize "663 MB (112 MB installed) plus 101 MB for the testsuite">
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<!ENTITY llvm-old-time "6.9 SBU (plus 1.8 SBU for the testsuite, both with parallelism=4)">
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]>
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<sect1 id="llvm-old" xreflabel="LLVM-&llvm-old-version;">
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<?dbhtml filename="llvm-old.html"?>
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<sect1info>
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<othername>$LastChangedBy$</othername>
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<date>$Date$</date>
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</sect1info>
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<title>LLVM-&llvm-old-version;</title>
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<indexterm zone="llvm-old">
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<primary sortas="a-llvm3">LLVM3</primary>
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</indexterm>
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<sect2 role="package">
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<title>Introduction to llvm3</title>
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<para>
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This is an old version of <application>llvm</application>, installed
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in /opt so that <xref linkend="rust"/> can use it. For normal use you
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should install <xref linkend="llvm"/>.
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</para>
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<para>
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This version of the <application>LLVM</application> package contains old
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versions of the libraries, using the API which
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<application>Rust</application> expects. Although <xref linkend="rust"/>
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ships with a version of LLVM-3.9 and will build and link to it statically,
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its <application>rustbuild</application> build-system will always compile
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a large number of cross-compilers for different architectures. Using a
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separate LLVM avoids that.
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</para>
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<para>
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By using a separate <application>LLVM-3.9.1</application> it will be
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possible to save time when upgrading <application>Rust</application> (the
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overall time for the first build will be similar both with and without
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separate <application>LLVM-3.9.1</application>).
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</para>
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&lfs80_checked;
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<bridgehead renderas="sect3">Package Information</bridgehead>
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<itemizedlist spacing="compact">
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<listitem>
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<para>
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Download (HTTP): <ulink url="&llvm-old-download-http;"/>
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</para>
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</listitem>
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<listitem>
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<para>
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Download (FTP): <ulink url="&llvm-old-download-ftp;"/>
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</para>
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</listitem>
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<listitem>
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<para>
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Download MD5 sum: &llvm-old-md5sum;
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</para>
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</listitem>
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<listitem>
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<para>
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Download size: &llvm-old-size;
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</para>
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</listitem>
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<listitem>
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<para>
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Estimated disk space required: &llvm-old-buildsize;
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</para>
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</listitem>
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<listitem>
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<para>
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Estimated build time: &llvm-old-time;
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</para>
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</listitem>
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</itemizedlist>
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<bridgehead renderas="sect3">llvm3 Dependencies</bridgehead>
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<bridgehead renderas="sect4">Required</bridgehead>
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<para role="required">
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<xref linkend="cmake"/>
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</para>
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<bridgehead renderas="sect4">Recommended</bridgehead>
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<para role="recommended">
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<xref linkend="python2"/>
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</para>
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<bridgehead renderas="sect4">Optional</bridgehead>
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<para role="optional">
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<xref linkend="doxygen"/>,
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<xref linkend="graphviz"/>,
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<xref linkend="libffi"/> (if you force this to be
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used, the build of <xref linkend="rust"/> will need to be altered)
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<xref linkend="libxml2"/>,
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<xref linkend="texlive"/> (or <xref linkend="tl-installer"/>),
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<xref linkend="valgrind"/>,
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<xref linkend="zip"/>,
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<ulink url="http://www.ocaml.org/">OCaml</ulink>, and
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<ulink url="https://pypi.python.org/pypi/Sphinx">Sphinx</ulink>
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</para>
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<para condition="html" role="usernotes">
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User Notes: <ulink url="&blfs-wiki;/llvm3"/>
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</para>
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</sect2>
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<sect2 role="installation">
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<title>Installation of llvm3</title>
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<para>
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Install <application>llvm3</application> by running the following
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commands:
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</para>
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<screen><userinput>mkdir -v build &&
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cd build &&
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CC=gcc CXX=g++ \
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cmake -DCMAKE_INSTALL_PREFIX=/opt/llvm3 \
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-DCMAKE_BUILD_TYPE=Release \
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-DLLVM_BUILD_LLVM_DYLIB=ON \
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-DLLVM_LINK_LLVM_DYLIB=ON \
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-DLLVM_TARGETS_TO_BUILD="host" \
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-DLLVM_INSTALL_UTILS=ON \
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-Wno-dev .. &&
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make</userinput></screen>
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<para>
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To test the results, issue: <command>make check-all</command>. The tests
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are run using the maximum number of processors/threads available, but the
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main part of the added time is spent compiling the test programs. This
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works fine with parallel make.
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</para>
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<para>
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Now, as the <systemitem class="username">root</systemitem> user:
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</para>
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<screen role="root"><userinput>echo "/opt/llvm3/lib" >> /etc/ld.so.conf &&
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make install &&
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/sbin/ldconfig &&
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ln -sfv /opt/llvm3/bin/FileCheck /usr/bin</userinput></screen>
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<para>
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Building the documentation for <emphasis>current</emphasis> LLVM is
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covered in <xref linkend="llvm"/>, building docs for this old version
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would be similar, but almost everyone who needs this old version will
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also need the current version for <xref linkend="mesa"/> so it is
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redundant to install the docs here.
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</para>
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</sect2>
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<sect2 role="commands">
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<title>Command Explanations</title>
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<para>
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<parameter>-DLLVM_INSTALL_UTILS_=ON</parameter>: This switch enables
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the installation of old utility programs. Of those,
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<application>rust</application> looks for <command>FileCheck</command>
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when its configure checks for a system LLVM, the others are not used.
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</para>
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<para>
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<parameter>/sbin/ldconfig</parameter>: This ensures the libraries can be
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found.
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</para>
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<para>
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<parameter>ln -sfv /opt/llvm3/bin/FileCheck /usr/bin</parameter>: This
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ensures that FileCheck can be found by <application>rust</application>
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even though <filename class="directory">/opt/llvm3/bin</filename> is not
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on the PATH (having two versions of <application>LLVM</application>
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generally available has been known to cause pain).
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</para>
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</sect2>
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<sect2 role="content">
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<title>Contents</title>
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<segmentedlist>
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<segtitle>Installed Program(s)</segtitle>
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<segtitle>Installed Librar(y,ies)</segtitle>
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<segtitle>Installed Director(y,ies)</segtitle>
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<seglistitem>
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<seg>
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bugpoint, count, FileCheck,
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llc, lli, llvm-ar, llvm-as, llvm-bcanalyzer, llvm-config, llvm-cov,
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llvm-c-test, llvm-cxxdump, llvm-diff, llvm-dis, llvm-dsymutil,
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llvm-dwarfdump, llvm-dwp, llvm-extract, llvm-lib (symlink to
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llvm-ar), llvm-link, llvm-lto, llvm-mc, llvm-mcmarkup, llvm-nm,
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llvm-objdump, llvm-pdbdump, llvm-profdata, llvm-ranlib (symlink to
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llvm-ar), llvm-readobj, llvm-rtdyld, llvm-size, llvm-split,
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llvm-stress, llvm-symbolizer, llvm-tblgen, not, obj2yaml, opt, sancov,
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sanstats, verify-uselistorder, yaml-bench and yaml2obj
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</seg>
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<seg>
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BugpointPasses.so, LLVMHello.so, libLLVM.so, libLLVM*.a (50
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libraries), libLTO.so
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</seg>
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<seg>
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/opt/llvm3
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</seg>
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</seglistitem>
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</segmentedlist>
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<variablelist>
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<bridgehead renderas="sect3">Short Descriptions</bridgehead>
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<?dbfo list-presentation="list"?>
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<?dbhtml list-presentation="table"?>
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<varlistentry id="FileCheck">
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<term><command>FileCheck</command></term>
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<listitem>
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<para>
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reads two files (one from standard input,the other specified on the
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command line) and uses one to verify the other.
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</para>
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<indexterm zone="llvm-old FileCheck">
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<primary sortas="b-FileCheck">FileCheck</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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</variablelist>
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<para>
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For details of the other items in this package, see <xref linkend="llvm"/>.
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</para>
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</sect2>
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</sect1>
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