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Revamp this doc to be accurate w.r.t. building llvmgcc4
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29113 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -19,7 +19,8 @@
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<li><a href="#aix">Building under AIX</a></li>
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</ul>
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</li>
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<li><a href="#instructions">Instructions</a></li>
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<li><a href="#instructions">llvm-gcc4 Instructions</a></li>
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<li><a href="#llvm-gcc3-instructions">llvm-gcc3 Instructions</a></li>
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<li><a href="#license">License Information</a></li>
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</ol>
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@ -36,9 +37,10 @@
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<div class="doc_text">
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<p>This document is intended to explain the process of building the
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LLVM C/C++ front-end, based on GCC 3.4, from its source code. You
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would have to do this, for example, if you are porting LLVM to a new
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architecture or operating system.</p>
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LLVM C/C++ front-end from its source code. You have to do this, for example, if
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you are porting LLVM to a new architecture or operating system, if you are
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working from Top-Of-Tree CVS/SVN, or if there is no precompiled snapshot
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available.</p>
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<p><b>NOTE:</b> This is currently a somewhat fragile, error-prone
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process, and you should <b>only</b> try to do it if:</p>
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@ -71,7 +73,8 @@ and Settings" directory). We welcome patches to fix this issue.
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versions is incapable of compiling the LLVM GCC front-end correctly. If your
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Cygwin
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installation includes GCC 3.3.3, we <i>strongly</i> recommend that you download
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GCC 3.4.3, build it separately, and use it for compiling the LLVM GCC front-end. This has been
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GCC 3.4.3, build it separately, and use it for compiling the LLVM GCC front-end.
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This has been
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shown to work correctly.</p>
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<p>Some versions of Cygwin utilize an experimental version of GNU binutils that
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will cause the GNU <tt>ld</tt> linker to fail an assertion when linking
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@ -94,18 +97,24 @@ invalid code. Instead, use the system assembler and linker.
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<!-- *********************************************************************** -->
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<div class="doc_section">
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<a name="instructions">Instructions</a>
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<a name="instructions">llvm-gcc4 Instructions</a>
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</div>
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<!-- *********************************************************************** -->
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<div class="doc_text">
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<p>
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<p>This section describes how to aquire and build llvm-gcc4, which is based on
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the GCC 4.0.1 front-end. This front-end supports C, C++, Objective-C, and
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Objective-C++. Note that the instructions for building this front-end are
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completely different than those for building llvm-gcc3.
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</p>
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<ol>
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<li>
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<p>Retrieve the appropriate llvm-gcc4-x.y.source.tar.gz archive from the llvm
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web site.</p>
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<p>It is also possible to download the sources of the llvm-gcc4 front end from
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a read-only mirror using subversion. To check out the code the first time use;
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a read-only mirror using subversion. To check out the code the first time use:
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</p>
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<tt>svn co svn://anonsvn.opensource.apple.com/svn/llvm <i>dst-directory</i></tt>
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@ -117,6 +126,23 @@ a read-only mirror using subversion. To check out the code the first time use;
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<p>The mirror is brought up to date every evening.</p>
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</li>
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<li>Follow the directions in the top-level README.LLVM file for up-to-date
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instructions on how to build llvm-gcc4.</li>
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</ol>
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</div>
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<!-- *********************************************************************** -->
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<div class="doc_section">
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<a name="llvm-gcc3-instructions">llvm-gcc3 Instructions</a>
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</div>
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<!-- *********************************************************************** -->
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<div class="doc_text">
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<ol>
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<li>Aquire llvm-gcc3 from <a href="GettingStarted.html#checkout">LLVM CVS</a> or
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from a <a href="http://llvm.org/releases/">release tarball</a>.</li>
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<li><p>Configure and build the LLVM libraries and tools. There are two ways to
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do this: either with <i>objdir</i> == <i>srcdir</i> or
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<i>objdir</i> != <i>srcdir</i>. It is recommended
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@ -314,51 +340,8 @@ COPYING.LIB for more details.
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</p>
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<p>
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The software also has the following additional copyrights:
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More information is <a href="FAQ.html#license">available in the FAQ</a>.
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</p>
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<pre>
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Copyright (c) 2003, 2004, 2005 University of Illinois at Urbana-Champaign.
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All rights reserved.
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Developed by:
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LLVM Team
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University of Illinois at Urbana-Champaign
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http://llvm.org
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE
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SOFTWARE.
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Copyright (c) 1994
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Hewlett-Packard Company
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Permission to use, copy, modify, distribute and sell this software
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and its documentation for any purpose is hereby granted without fee,
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provided that the above copyright notice appear in all copies and
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that both that copyright notice and this permission notice appear
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in supporting documentation. Hewlett-Packard Company makes no
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representations about the suitability of this software for any
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purpose. It is provided "as is" without express or implied warranty.
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Copyright (c) 1996, 1997, 1998, 1999
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Silicon Graphics Computer Systems, Inc.
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Permission to use, copy, modify, distribute and sell this software
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and its documentation for any purpose is hereby granted without fee,
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provided that the above copyright notice appear in all copies and
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that both that copyright notice and this permission notice appear
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in supporting documentation. Silicon Graphics makes no
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representations about the suitability of this software for any
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purpose. It is provided "as is" without express or implied warranty.
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</pre>
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</div>
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