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Revamp this doc to be accurate w.r.t. building llvmgcc4

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29113 91177308-0d34-0410-b5e6-96231b3b80d8
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Chris Lattner 2006-07-11 20:47:00 +00:00
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@ -19,7 +19,8 @@
<li><a href="#aix">Building under AIX</a></li>
</ul>
</li>
<li><a href="#instructions">Instructions</a></li>
<li><a href="#instructions">llvm-gcc4 Instructions</a></li>
<li><a href="#llvm-gcc3-instructions">llvm-gcc3 Instructions</a></li>
<li><a href="#license">License Information</a></li>
</ol>
@ -36,9 +37,10 @@
<div class="doc_text">
<p>This document is intended to explain the process of building the
LLVM C/C++ front-end, based on GCC 3.4, from its source code. You
would have to do this, for example, if you are porting LLVM to a new
architecture or operating system.</p>
LLVM C/C++ front-end from its source code. You have to do this, for example, if
you are porting LLVM to a new architecture or operating system, if you are
working from Top-Of-Tree CVS/SVN, or if there is no precompiled snapshot
available.</p>
<p><b>NOTE:</b> This is currently a somewhat fragile, error-prone
process, and you should <b>only</b> try to do it if:</p>
@ -71,7 +73,8 @@ and Settings" directory). We welcome patches to fix this issue.
versions is incapable of compiling the LLVM GCC front-end correctly. If your
Cygwin
installation includes GCC 3.3.3, we <i>strongly</i> recommend that you download
GCC 3.4.3, build it separately, and use it for compiling the LLVM GCC front-end. This has been
GCC 3.4.3, build it separately, and use it for compiling the LLVM GCC front-end.
This has been
shown to work correctly.</p>
<p>Some versions of Cygwin utilize an experimental version of GNU binutils that
will cause the GNU <tt>ld</tt> linker to fail an assertion when linking
@ -94,18 +97,24 @@ invalid code. Instead, use the system assembler and linker.
<!-- *********************************************************************** -->
<div class="doc_section">
<a name="instructions">Instructions</a>
<a name="instructions">llvm-gcc4 Instructions</a>
</div>
<!-- *********************************************************************** -->
<div class="doc_text">
<p>
<p>This section describes how to aquire and build llvm-gcc4, which is based on
the GCC 4.0.1 front-end. This front-end supports C, C++, Objective-C, and
Objective-C++. Note that the instructions for building this front-end are
completely different than those for building llvm-gcc3.
</p>
<ol>
<li>
<p>Retrieve the appropriate llvm-gcc4-x.y.source.tar.gz archive from the llvm
web site.</p>
<p>It is also possible to download the sources of the llvm-gcc4 front end from
a read-only mirror using subversion. To check out the code the first time use;
a read-only mirror using subversion. To check out the code the first time use:
</p>
<tt>svn co svn://anonsvn.opensource.apple.com/svn/llvm <i>dst-directory</i></tt>
@ -117,6 +126,23 @@ a read-only mirror using subversion. To check out the code the first time use;
<p>The mirror is brought up to date every evening.</p>
</li>
<li>Follow the directions in the top-level README.LLVM file for up-to-date
instructions on how to build llvm-gcc4.</li>
</ol>
</div>
<!-- *********************************************************************** -->
<div class="doc_section">
<a name="llvm-gcc3-instructions">llvm-gcc3 Instructions</a>
</div>
<!-- *********************************************************************** -->
<div class="doc_text">
<ol>
<li>Aquire llvm-gcc3 from <a href="GettingStarted.html#checkout">LLVM CVS</a> or
from a <a href="http://llvm.org/releases/">release tarball</a>.</li>
<li><p>Configure and build the LLVM libraries and tools. There are two ways to
do this: either with <i>objdir</i> == <i>srcdir</i> or
<i>objdir</i> != <i>srcdir</i>. It is recommended
@ -314,51 +340,8 @@ COPYING.LIB for more details.
</p>
<p>
The software also has the following additional copyrights:
More information is <a href="FAQ.html#license">available in the FAQ</a>.
</p>
<pre>
Copyright (c) 2003, 2004, 2005 University of Illinois at Urbana-Champaign.
All rights reserved.
Developed by:
LLVM Team
University of Illinois at Urbana-Champaign
http://llvm.org
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE
SOFTWARE.
Copyright (c) 1994
Hewlett-Packard Company
Permission to use, copy, modify, distribute and sell this software
and its documentation for any purpose is hereby granted without fee,
provided that the above copyright notice appear in all copies and
that both that copyright notice and this permission notice appear
in supporting documentation. Hewlett-Packard Company makes no
representations about the suitability of this software for any
purpose. It is provided "as is" without express or implied warranty.
Copyright (c) 1996, 1997, 1998, 1999
Silicon Graphics Computer Systems, Inc.
Permission to use, copy, modify, distribute and sell this software
and its documentation for any purpose is hereby granted without fee,
provided that the above copyright notice appear in all copies and
that both that copyright notice and this permission notice appear
in supporting documentation. Silicon Graphics makes no
representations about the suitability of this software for any
purpose. It is provided "as is" without express or implied warranty.
</pre>
</div>