[llvm-commits] [llvm] r167961 - /llvm/trunk/docs/GCCFEBuildInstrs.html
Chad Rosier
mcrosier at apple.com
Wed Nov 14 12:00:49 PST 2012
Woot! Thanks, Sean!
On Nov 14, 2012, at 11:34 AM, Sean Silva <silvas at purdue.edu> wrote:
> Author: silvas
> Date: Wed Nov 14 13:34:48 2012
> New Revision: 167961
>
> URL: http://llvm.org/viewvc/llvm-project?rev=167961&view=rev
> Log:
> docs: nuke GCCFEBuildInstrs.html
>
> Removed:
> llvm/trunk/docs/GCCFEBuildInstrs.html
>
> Removed: llvm/trunk/docs/GCCFEBuildInstrs.html
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/GCCFEBuildInstrs.html?rev=167960&view=auto
> ==============================================================================
> --- llvm/trunk/docs/GCCFEBuildInstrs.html (original)
> +++ llvm/trunk/docs/GCCFEBuildInstrs.html (removed)
> @@ -1,279 +0,0 @@
> -<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
> - "http://www.w3.org/TR/html4/strict.dtd">
> -<html>
> -<head>
> - <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
> - <link rel="stylesheet" href="_static/llvm.css" type="text/css" media="screen">
> - <title>Building the LLVM GCC Front-End</title>
> -</head>
> -<body>
> -
> -<h1>
> - Building the LLVM GCC Front-End
> -</h1>
> -
> -<ol>
> - <li><a href="#instructions">Building llvm-gcc from Source</a></li>
> - <li><a href="#ada">Building the Ada front-end</a></li>
> - <li><a href="#fortran">Building the Fortran front-end</a></li>
> - <li><a href="#license">License Information</a></li>
> -</ol>
> -
> -<div class="doc_author">
> - <p>Written by the LLVM Team</p>
> -</div>
> -
> -<!-- *********************************************************************** -->
> -<h2><a name="instructions">Building llvm-gcc from Source</a></h2>
> -<!-- *********************************************************************** -->
> -
> -<div>
> -
> -<p>This section describes how to acquire and build llvm-gcc 4.2, which is based
> -on the GCC 4.2.1 front-end. Supported languages are Ada, C, C++, Fortran,
> -Objective-C and Objective-C++. Note that the instructions for building these
> -front-ends are completely different (and much easier!) than those for building
> -llvm-gcc3 in the past.</p>
> -
> -<ol>
> - <li><p>Retrieve the appropriate llvm-gcc-4.2-<i>version</i>.source.tar.gz
> - archive from the <a href="http://llvm.org/releases/">LLVM web
> - site</a>.</p>
> -
> - <p>It is also possible to download the sources of the llvm-gcc front end
> - from a read-only mirror using subversion. To check out the 4.2 code
> - for first time use:</p>
> -
> -<div class="doc_code">
> -<pre>
> -svn co http://llvm.org/svn/llvm-project/llvm-gcc-4.2/trunk <i>dst-directory</i>
> -</pre>
> -</div>
> -
> - <p>After that, the code can be be updated in the destination directory
> - using:</p>
> -
> -<div class="doc_code">
> -<pre>svn update</pre>
> -</div>
> -
> - <p>The mirror is brought up to date every evening.</p></li>
> -
> - <li>Follow the directions in the top-level <tt>README.LLVM</tt> file for
> - up-to-date instructions on how to build llvm-gcc. See below for building
> - with support for Ada or Fortran.
> -</ol>
> -
> -</div>
> -
> -<!-- *********************************************************************** -->
> -<h2><a name="ada">Building the Ada front-end</a></h2>
> -<!-- *********************************************************************** -->
> -
> -<div>
> -<p>Building with support for Ada amounts to following the directions in the
> -top-level <tt>README.LLVM</tt> file, adding ",ada" to EXTRALANGS, for example:
> -<tt>EXTRALANGS=,ada</tt></p>
> -
> -<p>There are some complications however:</p>
> -
> -<ol>
> - <li><p>The only platform for which the Ada front-end is known to build is
> - 32 bit intel x86 running linux. It is unlikely to build for other
> - systems without some work.</p></li>
> - <li><p>The build requires having a compiler that supports Ada, C and C++.
> - The Ada front-end is written in Ada so an Ada compiler is needed to
> - build it. Compilers known to work with the
> - <a href="http://llvm.org/releases/download.html">LLVM 2.7 release</a>
> - are <a href="http://gcc.gnu.org/releases.html">gcc-4.2</a> and the
> - 2005, 2006 and 2007 versions of the
> - <a href="http://libre.adacore.com/">GNAT GPL Edition</a>.
> - <b>GNAT GPL 2008, gcc-4.3 and later will not work</b>.
> - The LLVM parts of llvm-gcc are written in C++ so a C++ compiler is
> - needed to build them. The rest of gcc is written in C.
> - Some linux distributions provide a version of gcc that supports all
> - three languages (the Ada part often comes as an add-on package to
> - the rest of gcc). Otherwise it is possible to combine two versions
> - of gcc, one that supports Ada and C (such as the
> - <a href="http://libre.adacore.com/">2007 GNAT GPL Edition</a>)
> - and another which supports C++, see below.</p></li>
> - <li><p>Because the Ada front-end is experimental, it is wise to build the
> - compiler with checking enabled. This causes it to run much slower, but
> - helps catch mistakes in the compiler (please report any problems using
> - <a href="http://llvm.org/bugs/">LLVM bugzilla</a>).</p></li>
> - <li><p>The Ada front-end <a href="http://llvm.org/PR2007">fails to
> - bootstrap</a>, due to lack of LLVM support for
> - <tt>setjmp</tt>/<tt>longjmp</tt> style exception handling (used
> - internally by the compiler), so you must specify
> - <tt>--disable-bootstrap</tt>.</p></li>
> -</ol>
> -
> -<p>Supposing appropriate compilers are available, llvm-gcc with Ada support can
> - be built on an x86-32 linux box using the following recipe:</p>
> -
> -<ol>
> - <li><p>Download the <a href="http://llvm.org/releases/download.html">LLVM source</a>
> - and unpack it:</p>
> -
> -<pre class="doc_code">
> -wget http://llvm.org/releases/2.7/llvm-2.7.tgz
> -tar xzf llvm-2.7.tgz
> -mv llvm-2.7 llvm
> -</pre>
> -
> - <p>or <a href="GettingStarted.html#checkout">check out the
> - latest version from subversion</a>:</p>
> -
> -<pre class="doc_code">svn co http://llvm.org/svn/llvm-project/llvm/trunk llvm</pre>
> -
> - </li>
> -
> - <li><p>Download the
> - <a href="http://llvm.org/releases/download.html">llvm-gcc-4.2 source</a>
> - and unpack it:</p>
> -
> -<pre class="doc_code">
> -wget http://llvm.org/releases/2.7/llvm-gcc-4.2-2.7.source.tgz
> -tar xzf llvm-gcc-4.2-2.7.source.tgz
> -mv llvm-gcc-4.2-2.7.source llvm-gcc-4.2
> -</pre>
> -
> - <p>or <a href="GettingStarted.html#checkout">check out the
> - latest version from subversion</a>:</p>
> -
> -<pre class="doc_code">
> -svn co http://llvm.org/svn/llvm-project/llvm-gcc-4.2/trunk llvm-gcc-4.2
> -</pre>
> - </li>
> -
> - <li><p>Make a build directory <tt>llvm-objects</tt> for llvm and make it the
> - current directory:</p>
> -
> -<pre class="doc_code">
> -mkdir llvm-objects
> -cd llvm-objects
> -</pre>
> - </li>
> -
> - <li><p>Configure LLVM (here it is configured to install into <tt>/usr/local</tt>):</p>
> -
> -<pre class="doc_code">
> -../llvm/configure --prefix=<b>/usr/local</b> --enable-optimized --enable-assertions
> -</pre>
> -
> - <p>If you have a multi-compiler setup and the C++ compiler is not the
> - default, then you can configure like this:</p>
> -
> -<pre class="doc_code">
> -CXX=<b>PATH_TO_C++_COMPILER</b> ../llvm/configure --prefix=<b>/usr/local</b> --enable-optimized --enable-assertions
> -</pre>
> -
> - <p>To compile without checking (not recommended), replace
> - <tt>--enable-assertions</tt> with <tt>--disable-assertions</tt>.</p>
> -
> - </li>
> -
> - <li><p>Build LLVM:</p>
> -
> -<pre class="doc_code">
> -make
> -</pre>
> - </li>
> -
> - <li><p>Install LLVM (optional):</p>
> -
> -<pre class="doc_code">
> -make install
> -</pre>
> - </li>
> -
> - <li><p>Make a build directory <tt>llvm-gcc-4.2-objects</tt> for llvm-gcc and make it the
> - current directory:</p>
> -
> -<pre class="doc_code">
> -cd ..
> -mkdir llvm-gcc-4.2-objects
> -cd llvm-gcc-4.2-objects
> -</pre>
> - </li>
> -
> - <li><p>Configure llvm-gcc (here it is configured to install into <tt>/usr/local</tt>).
> - The <tt>--enable-checking</tt> flag turns on sanity checks inside the compiler.
> - To turn off these checks (not recommended), replace <tt>--enable-checking</tt>
> - with <tt>--disable-checking</tt>.
> - Additional languages can be appended to the <tt>--enable-languages</tt> switch,
> - for example <tt>--enable-languages=ada,c,c++</tt>.</p>
> -
> -<pre class="doc_code">
> -../llvm-gcc-4.2/configure --prefix=<b>/usr/local</b> --enable-languages=ada,c \
> - --enable-checking --enable-llvm=$PWD/../llvm-objects \
> - --disable-bootstrap --disable-multilib
> -</pre>
> -
> - <p>If you have a multi-compiler setup, then you can configure like this:</p>
> -
> -<pre class="doc_code">
> -export CC=<b>PATH_TO_C_AND_ADA_COMPILER</b>
> -export CXX=<b>PATH_TO_C++_COMPILER</b>
> -../llvm-gcc-4.2/configure --prefix=<b>/usr/local</b> --enable-languages=ada,c \
> - --enable-checking --enable-llvm=$PWD/../llvm-objects \
> - --disable-bootstrap --disable-multilib
> -</pre>
> - </li>
> -
> - <li><p>Build and install the compiler:</p>
> -
> -<pre class="doc_code">
> -make
> -make install
> -</pre>
> - </li>
> -</ol>
> -
> -</div>
> -
> -<!-- *********************************************************************** -->
> -<h2><a name="fortran">Building the Fortran front-end</a></h2>
> -<!-- *********************************************************************** -->
> -
> -<div>
> -<p>To build with support for Fortran, follow the directions in the top-level
> -<tt>README.LLVM</tt> file, adding ",fortran" to EXTRALANGS, for example:</p>
> -
> -<pre class="doc_code">
> -EXTRALANGS=,fortran
> -</pre>
> -
> -</div>
> -
> -<!-- *********************************************************************** -->
> -<h2><a name="license">License Information</a></h2>
> -<!-- *********************************************************************** -->
> -
> -<div>
> -<p>
> -The LLVM GCC frontend is licensed to you under the GNU General Public License
> -and the GNU Lesser General Public License. Please see the files COPYING and
> -COPYING.LIB for more details.
> -</p>
> -
> -<p>
> -More information is <a href="FAQ.html#license">available in the FAQ</a>.
> -</p>
> -</div>
> -
> -<!-- *********************************************************************** -->
> -
> -<hr>
> -<address>
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> -
> - <a href="http://llvm.org/">LLVM Compiler Infrastructure</a><br>
> - Last modified: $Date$
> -</address>
> -
> -</body>
> -</html>
>
>
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