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| author | Duncan Sands <baldrick@free.fr> | 2008-02-14 17:53:22 +0000 |
|---|---|---|
| committer | Duncan Sands <baldrick@free.fr> | 2008-02-14 17:53:22 +0000 |
| commit | 8655b151377bac396302af7646797c0db4ee4627 (patch) | |
| tree | c8b274fad140179333fa75c19be54d24dcec9374 /docs/GCCFEBuildInstrs.html | |
| parent | 00fee65fd21f9615d1a604b8b7d42cd16a3f6b47 (diff) | |
| download | external_llvm-8655b151377bac396302af7646797c0db4ee4627.zip external_llvm-8655b151377bac396302af7646797c0db4ee4627.tar.gz external_llvm-8655b151377bac396302af7646797c0db4ee4627.tar.bz2 | |
Rename CFEBuildInstrs.html to GCCFEBuildInstrs.html.
Update all references to it and place a redirection
page at the old address.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47124 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs/GCCFEBuildInstrs.html')
| -rw-r--r-- | docs/GCCFEBuildInstrs.html | 281 |
1 files changed, 281 insertions, 0 deletions
diff --git a/docs/GCCFEBuildInstrs.html b/docs/GCCFEBuildInstrs.html new file mode 100644 index 0000000..289bda3 --- /dev/null +++ b/docs/GCCFEBuildInstrs.html @@ -0,0 +1,281 @@ +<!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="llvm.css" type="text/css" media="screen"> + <title>Building the LLVM GCC Front-End</title> +</head> +<body> + +<div class="doc_title"> + Building the LLVM GCC Front-End +</div> + +<ol> + <li><a href="#instructions">Building llvm-gcc from Source</a></li> + <li><a href="#license">License Information</a></li> +</ol> + +<div class="doc_author"> + <p>Written by the LLVM Team</p> +</div> + +<!-- *********************************************************************** --> +<div class="doc_section"> + <a name="instructions">Building llvm-gcc from Source</a> +</div> +<!-- *********************************************************************** --> + +<div class="doc_text"> + +<p>This section describes how to acquire and build llvm-gcc 4.0 and 4.2, which are +based on the GCC 4.0.1/4.2.1 front-ends respectively. Both front-ends support C, +C++, Objective-C and Objective-C++. The 4.2 front-end also supports Ada and +Fortran to some extent. 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-gcc4.x-y.z.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 4.0 code + for first time use:</p> + +<div class="doc_code"> +<pre> +svn co http://llvm.org/svn/llvm-project/llvm-gcc-4.0/trunk <i>dst-directory</i> +</pre> +</div> + +<p>To check out the 4.2 code 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> + +<!-- *********************************************************************** --> +<div class="doc_section"> + <a name="license">Building the Ada front-end</a> +</div> + +<div class="doc_text"> +<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. What is more, the Ada compiler must not be more recent + than what it is trying to compile, otherwise the build will fail. + This rules out gcc-4.3 (but not gcc-4.2) and also the + <a href="http://libre.adacore.com/">2007 GNAT GPL Edition</a>. + 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/">2006 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 slower, but + helps catch mistakes in the compiler (please report any problems using + <a href="http://llvm.org/bugs">LLVM bugzilla</a>).</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> + +<div class="doc_code"> +<pre>wget http://llvm.org/releases/2.2/llvm-2.2.tar.gz +tar xzf llvm-2.2.tar.gz +mv llvm-2.2 llvm</pre> +</div> + + <p>or <a href="GettingStarted.html#checkout">check out the + latest version from subversion</a>:</p> + +<div class="doc_code"> +<pre>svn co http://llvm.org/svn/llvm-project/llvm/trunk llvm</pre> +</div> + </li> + + <li><p>Download the + <a href="http://llvm.org/releases/download.html">llvm-gcc-4.2 source</a> + and unpack it:</p> + +<div class="doc_code"> +<pre>wget http://llvm.org/releases/2.2/llvm-gcc4.2-2.2.source.tar.gz +tar xzf llvm-gcc4.2-2.2.source.tar.gz +mv llvm-gcc4.2-2.2.source llvm-gcc-4.2</pre> +</div> + + <p>or <a href="GettingStarted.html#checkout">check out the + latest version from subversion</a>:</p> + +<div class="doc_code"> +<pre>svn co http://llvm.org/svn/llvm-project/llvm-gcc-4.2/trunk llvm-gcc-4.2</pre> +</div> + </li> + + <li><p>Make a build directory <tt>llvm-objects</tt> for llvm and make it the + current directory:</p> + +<div class="doc_code"> +<pre>mkdir llvm-objects +cd llvm-objects</pre> +</div> + </li> + + <li><p>Configure LLVM (here it is configured to install into <tt>/usr/local</tt>):</p> + +<div class="doc_code"> +<pre>../llvm/configure --prefix=<b>/usr/local</b></pre> +</div> + + <p>If you have a multi-compiler setup and the C++ compiler is not the + default, then you can configure like this:</p> + +<div class="doc_code"> +<pre>CXX=<b>PATH_TO_C++_COMPILER</b> ../llvm/configure --prefix=<b>/usr/local</b></pre> +</div> + </li> + + <li><p>Build LLVM with checking enabled (use <tt>ENABLE_OPTIMIZED=1</tt> to + build without checking):</p> + +<div class="doc_code"> +<pre>make ENABLE_OPTIMIZED=0</pre> +</div> + </li> + + <li><p>Install LLVM (optional):</p> + +<div class="doc_code"> +<pre>make install</pre> +</div> + </li> + + <li><p>Make a build directory <tt>llvm-gcc-4.2-objects</tt> for llvm-gcc and make it the + current directory:</p> + +<div class="doc_code"> +<pre> +cd .. +mkdir llvm-gcc-4.2-objects +cd llvm-gcc-4.2-objects</pre> +</div> + </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. + If you omit it then LLVM must be built with <tt>make ENABLE_OPTIMIZED=1</tt>. + Additional languages can be appended to the --enable-languages switch, + for example <tt>--enable-languages=ada,c,c++</tt>.</p> + +<div class="doc_code"> +<pre>../llvm-gcc-4.2/configure --prefix=<b>/usr/local</b> --enable-languages=ada,c --enable-checking --enable-llvm=$PWD/../llvm-objects --disable-shared --disable-bootstrap --disable-multilib</pre> +</div> + + <p>If you have a multi-compiler setup, then you can configure like this:</p> +<div class="doc_code"> + +<pre> +export CC=<b>PATH_TO_C_AND_ADA_COMPILER</b> +export CXX=<b>PATH_TO_C++_COMPILER</b> +../llvm-gcc-4.2/configure --prefix=<b>/usr/local</b> --enable-languages=ada,c --enable-checking --enable-llvm=$PWD/../llvm-objects --disable-shared --disable-bootstrap --disable-multilib</pre> +</div> + </li> + + <li><p>Build and install the compiler:</p> + +<div class="doc_code"> +<pre>make +make install</pre> +</div> + </li> +</ol> + +</div> + +<!-- *********************************************************************** --> +<div class="doc_section"> + <a name="license">Building the Fortran front-end</a> +</div> + +<div class="doc_text"> +<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> + +<div class="doc_code"> +<pre> +EXTRALANGS=,fortran +</pre> +</div> + +</div> + +<!-- *********************************************************************** --> +<div class="doc_section"> + <a name="license">License Information</a> +</div> + +<div class="doc_text"> +<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> + <a href="http://jigsaw.w3.org/css-validator/check/referer"><img + src="http://jigsaw.w3.org/css-validator/images/vcss" alt="Valid CSS!"></a> + <a href="http://validator.w3.org/check/referer"><img + src="http://www.w3.org/Icons/valid-html401" alt="Valid HTML 4.01!"></a> + + <a href="http://llvm.org">LLVM Compiler Infrastructure</a><br> + Last modified: $Date$ +</address> + +</body> +</html> |