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.
+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.NOTE: This is currently a somewhat fragile, error-prone process, and you should only try to do it if:
@@ -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 strongly 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.Some versions of Cygwin utilize an experimental version of GNU binutils that will cause the GNU ld linker to fail an assertion when linking @@ -94,18 +97,24 @@ invalid code. Instead, use the system assembler and linker.
+ +
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. +
+Retrieve the appropriate llvm-gcc4-x.y.source.tar.gz archive from the llvm web site.
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:
svn co svn://anonsvn.opensource.apple.com/svn/llvm dst-directory @@ -117,6 +126,23 @@ a read-only mirror using subversion. To check out the code the first time use;The mirror is brought up to date every evening.
Configure and build the LLVM libraries and tools. There are two ways to do this: either with objdir == srcdir or objdir != srcdir. It is recommended @@ -314,51 +340,8 @@ COPYING.LIB for more details.
-The software also has the following additional copyrights: +More information is available in the FAQ.
- -- -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.