mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-01 08:23:21 +01:00
ecf9ebbc72
quite old now. Update the documentation to reflect this, and direct people to use VS2008 or newer. llvm-svn: 144818
369 lines
11 KiB
HTML
369 lines
11 KiB
HTML
<!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">
|
|
<title>Getting Started with LLVM System for Microsoft Visual Studio</title>
|
|
<link rel="stylesheet" href="llvm.css" type="text/css">
|
|
</head>
|
|
<body>
|
|
|
|
<h1>
|
|
Getting Started with the LLVM System using Microsoft Visual Studio
|
|
</h1>
|
|
|
|
<ul>
|
|
<li><a href="#overview">Overview</a>
|
|
<li><a href="#requirements">Requirements</a>
|
|
<ol>
|
|
<li><a href="#hardware">Hardware</a>
|
|
<li><a href="#software">Software</a>
|
|
</ol></li>
|
|
<li><a href="#quickstart">Getting Started</a>
|
|
<li><a href="#tutorial">An Example Using the LLVM Tool Chain</a>
|
|
<li><a href="#problems">Common Problems</a>
|
|
<li><a href="#links">Links</a>
|
|
</ul>
|
|
|
|
<div class="doc_author">
|
|
<p>Written by: <a href="http://llvm.org/">The LLVM Team</a></p>
|
|
</div>
|
|
|
|
|
|
<!-- *********************************************************************** -->
|
|
<h2>
|
|
<a name="overview"><b>Overview</b></a>
|
|
</h2>
|
|
<!-- *********************************************************************** -->
|
|
|
|
<div>
|
|
|
|
<p>Welcome to LLVM on Windows! This document only covers LLVM on Windows using
|
|
Visual Studio, not mingw or cygwin. In order to get started, you first need to
|
|
know some basic information.</p>
|
|
|
|
<p>There are many different projects that compose LLVM. The first is the LLVM
|
|
suite. This contains all of the tools, libraries, and header files needed to
|
|
use the low level virtual machine. It contains an assembler, disassembler,
|
|
bitcode analyzer and bitcode optimizer. It also contains a test suite that can
|
|
be used to test the LLVM tools.</p>
|
|
|
|
<p>Another useful project on Windows is
|
|
<a href="http://clang.llvm.org/">clang</a>. Clang is a C family
|
|
([Objective]C/C++) compiler. Clang mostly works on Windows, but does not
|
|
currently understand all of the Microsoft extensions to C and C++. Because of
|
|
this, clang cannot parse the C++ standard library included with Visual Studio,
|
|
nor parts of the Windows Platform SDK. However, most standard C programs do
|
|
compile. Clang can be used to emit bitcode, directly emit object files or
|
|
even linked executables using Visual Studio's <tt>link.exe</tt></p>
|
|
|
|
<p>The large LLVM test suite cannot be run on the Visual Studio port at this
|
|
time.</p>
|
|
|
|
<p>Most of the tools build and work. <tt>bugpoint</tt> does build, but does
|
|
not work.</p>
|
|
|
|
<p>Additional information about the LLVM directory structure and tool chain
|
|
can be found on the main <a href="GettingStarted.html">Getting Started</a>
|
|
page.</p>
|
|
|
|
</div>
|
|
|
|
<!-- *********************************************************************** -->
|
|
<h2>
|
|
<a name="requirements"><b>Requirements</b></a>
|
|
</h2>
|
|
<!-- *********************************************************************** -->
|
|
|
|
<div>
|
|
|
|
<p>Before you begin to use the LLVM system, review the requirements given
|
|
below. This may save you some trouble by knowing ahead of time what hardware
|
|
and software you will need.</p>
|
|
|
|
<!-- ======================================================================= -->
|
|
<h3>
|
|
<a name="hardware"><b>Hardware</b></a>
|
|
</h3>
|
|
|
|
<div>
|
|
|
|
<p>Any system that can adequately run Visual Studio 2008 is fine. The LLVM
|
|
source tree and object files, libraries and executables will consume
|
|
approximately 3GB.</p>
|
|
|
|
</div>
|
|
|
|
<!-- ======================================================================= -->
|
|
<h3><a name="software"><b>Software</b></a></h3>
|
|
<div>
|
|
|
|
<p>You will need Visual Studio 2008 or higher. Earlier versions of Visual
|
|
Studio have bugs, are not completely compatible, or do not support the C++
|
|
standard well enough.</p>
|
|
|
|
<p>You will also need the <a href="http://www.cmake.org/">CMake</a> build
|
|
system since it generates the project files you will use to build with.</p>
|
|
|
|
<p>If you would like to run the LLVM tests you will need
|
|
<a href="http://www.python.org/">Python</a>. Versions 2.4-2.7 are known to
|
|
work. You will need <a href="http://gnuwin32.sourceforge.net/">"GnuWin32"</a>
|
|
tools, too.</p>
|
|
|
|
<p>Do not install the LLVM directory tree into a path containing spaces (e.g.
|
|
C:\Documents and Settings\...) as the configure step will fail.</p>
|
|
|
|
</div>
|
|
|
|
</div>
|
|
|
|
<!-- *********************************************************************** -->
|
|
<h2>
|
|
<a name="quickstart"><b>Getting Started</b></a>
|
|
</h2>
|
|
<!-- *********************************************************************** -->
|
|
|
|
<div>
|
|
|
|
<p>Here's the short story for getting up and running quickly with LLVM:</p>
|
|
|
|
<ol>
|
|
<li>Read the documentation.</li>
|
|
<li>Seriously, read the documentation.</li>
|
|
<li>Remember that you were warned twice about reading the documentation.</li>
|
|
|
|
<li>Get the Source Code
|
|
<ul>
|
|
<li>With the distributed files:
|
|
<ol>
|
|
<li><tt>cd <i>where-you-want-llvm-to-live</i></tt>
|
|
<li><tt>gunzip --stdout llvm-<i>version</i>.tar.gz | tar -xvf -</tt>
|
|
<i> or use WinZip</i>
|
|
<li><tt>cd llvm</tt></li>
|
|
</ol></li>
|
|
|
|
<li>With anonymous Subversion access:
|
|
<ol>
|
|
<li><tt>cd <i>where-you-want-llvm-to-live</i></tt></li>
|
|
<li><tt>svn co http://llvm.org/svn/llvm-project/llvm/trunk llvm</tt></li>
|
|
<li><tt>cd llvm</tt></li>
|
|
</ol></li>
|
|
</ul></li>
|
|
|
|
<li> Use <a href="http://www.cmake.org/">CMake</a> to generate up-to-date
|
|
project files:
|
|
<ul>
|
|
<li>Once CMake is installed then the simplest way is to just start the
|
|
CMake GUI, select the directory where you have LLVM extracted to, and the
|
|
default options should all be fine. One option you may really want to
|
|
change, regardless of anything else, might be the CMAKE_INSTALL_PREFIX
|
|
setting to select a directory to INSTALL to once compiling is complete,
|
|
although installation is not mandatory for using LLVM. Another important
|
|
option is LLVM_TARGETS_TO_BUILD, which controls the LLVM target
|
|
architectures that are included on the build.
|
|
<li>See the <a href="CMake.html">LLVM CMake guide</a> for
|
|
detailed information about how to configure the LLVM
|
|
build.</li>
|
|
</ul>
|
|
</li>
|
|
|
|
<li>Start Visual Studio
|
|
<ul>
|
|
<li>In the directory you created the project files will have
|
|
an <tt>llvm.sln</tt> file, just double-click on that to open
|
|
Visual Studio.</li>
|
|
</ul></li>
|
|
|
|
<li>Build the LLVM Suite:
|
|
<ul>
|
|
<li>The projects may still be built individually, but
|
|
to build them all do not just select all of them in batch build (as some
|
|
are meant as configuration projects), but rather select and build just
|
|
the ALL_BUILD project to build everything, or the INSTALL project, which
|
|
first builds the ALL_BUILD project, then installs the LLVM headers, libs,
|
|
and other useful things to the directory set by the CMAKE_INSTALL_PREFIX
|
|
setting when you first configured CMake.</li>
|
|
<li>The Fibonacci project is a sample program that uses the JIT.
|
|
Modify the project's debugging properties to provide a numeric
|
|
command line argument or run it from the command line. The
|
|
program will print the corresponding fibonacci value.</li>
|
|
</ul></li>
|
|
|
|
<li>Test LLVM on Visual Studio:
|
|
<ul>
|
|
<li>If %PATH% does not contain GnuWin32, you may specify LLVM_LIT_TOOLS_DIR
|
|
on CMake for the path to GnuWin32.</li>
|
|
<li>You can run LLVM tests by merely building the project
|
|
"check". The test results will be shown in the VS output
|
|
window.</li>
|
|
</ul>
|
|
</li>
|
|
|
|
<!-- FIXME: Is it up-to-date? -->
|
|
<li>Test LLVM:
|
|
<ul>
|
|
<li>The LLVM tests can be run by <tt>cd</tt>ing to the llvm source directory
|
|
and running:
|
|
|
|
<div class="doc_code">
|
|
<pre>
|
|
% llvm-lit test
|
|
</pre>
|
|
</div>
|
|
|
|
<p>Note that quite a few of these test will fail.</p>
|
|
</li>
|
|
|
|
<li>A specific test or test directory can be run with:
|
|
|
|
<div class="doc_code">
|
|
<pre>
|
|
% llvm-lit test/path/to/test
|
|
</pre>
|
|
</div>
|
|
</li>
|
|
</ul>
|
|
</ol>
|
|
|
|
</div>
|
|
|
|
<!-- *********************************************************************** -->
|
|
<h2>
|
|
<a name="tutorial">An Example Using the LLVM Tool Chain</a>
|
|
</h2>
|
|
<!-- *********************************************************************** -->
|
|
|
|
<div>
|
|
|
|
<ol>
|
|
<li><p>First, create a simple C file, name it 'hello.c':</p>
|
|
|
|
<div class="doc_code">
|
|
<pre>
|
|
#include <stdio.h>
|
|
int main() {
|
|
printf("hello world\n");
|
|
return 0;
|
|
}
|
|
</pre></div></li>
|
|
|
|
<li><p>Next, compile the C file into a LLVM bitcode file:</p>
|
|
|
|
<div class="doc_code">
|
|
<pre>
|
|
% clang -c hello.c -emit-llvm -o hello.bc
|
|
</pre>
|
|
</div>
|
|
|
|
<p>This will create the result file <tt>hello.bc</tt> which is the LLVM
|
|
bitcode that corresponds the the compiled program and the library
|
|
facilities that it required. You can execute this file directly using
|
|
<tt>lli</tt> tool, compile it to native assembly with the <tt>llc</tt>,
|
|
optimize or analyze it further with the <tt>opt</tt> tool, etc.</p>
|
|
|
|
<p>Alternatively you can directly output an executable with clang with:
|
|
</p>
|
|
|
|
<div class="doc_code">
|
|
<pre>
|
|
% clang hello.c -o hello.exe
|
|
</pre>
|
|
</div>
|
|
|
|
<p>The <tt>-o hello.exe</tt> is required because clang currently outputs
|
|
<tt>a.out</tt> when neither <tt>-o</tt> nor <tt>-c</tt> are given.</p>
|
|
|
|
<li><p>Run the program using the just-in-time compiler:</p>
|
|
|
|
<div class="doc_code">
|
|
<pre>
|
|
% lli hello.bc
|
|
</pre>
|
|
</div>
|
|
|
|
<li><p>Use the <tt>llvm-dis</tt> utility to take a look at the LLVM assembly
|
|
code:</p>
|
|
|
|
<div class="doc_code">
|
|
<pre>
|
|
% llvm-dis < hello.bc | more
|
|
</pre>
|
|
</div></li>
|
|
|
|
<li><p>Compile the program to object code using the LLC code generator:</p>
|
|
|
|
<div class="doc_code">
|
|
<pre>
|
|
% llc -filetype=obj hello.bc
|
|
</pre>
|
|
</div></li>
|
|
|
|
<li><p>Link to binary using Microsoft link:</p>
|
|
|
|
<div class="doc_code">
|
|
<pre>
|
|
% link hello.obj -defaultlib:libcmt
|
|
</pre>
|
|
</div>
|
|
|
|
<li><p>Execute the native code program:</p>
|
|
|
|
<div class="doc_code">
|
|
<pre>
|
|
% hello.exe
|
|
</pre>
|
|
</div></li>
|
|
</ol>
|
|
|
|
</div>
|
|
|
|
<!-- *********************************************************************** -->
|
|
<h2>
|
|
<a name="problems">Common Problems</a>
|
|
</h2>
|
|
<!-- *********************************************************************** -->
|
|
|
|
<div>
|
|
|
|
<p>If you are having problems building or using LLVM, or if you have any other
|
|
general questions about LLVM, please consult the <a href="FAQ.html">Frequently
|
|
Asked Questions</a> page.</p>
|
|
|
|
</div>
|
|
|
|
<!-- *********************************************************************** -->
|
|
<h2>
|
|
<a name="links">Links</a>
|
|
</h2>
|
|
<!-- *********************************************************************** -->
|
|
|
|
<div>
|
|
|
|
<p>This document is just an <b>introduction</b> to how to use LLVM to do
|
|
some simple things... there are many more interesting and complicated things
|
|
that you can do that aren't documented here (but we'll gladly accept a patch
|
|
if you want to write something up!). For more information about LLVM, check
|
|
out:</p>
|
|
|
|
<ul>
|
|
<li><a href="http://llvm.org/">LLVM homepage</a></li>
|
|
<li><a href="http://llvm.org/doxygen/">LLVM doxygen tree</a></li>
|
|
</ul>
|
|
|
|
</div>
|
|
|
|
<!-- *********************************************************************** -->
|
|
|
|
<hr>
|
|
<address>
|
|
<a href="http://jigsaw.w3.org/css-validator/check/referer"><img
|
|
src="http://jigsaw.w3.org/css-validator/images/vcss-blue" alt="Valid CSS"></a>
|
|
<a href="http://validator.w3.org/check/referer"><img
|
|
src="http://www.w3.org/Icons/valid-html401-blue" alt="Valid HTML 4.01"></a>
|
|
|
|
<a href="http://llvm.org/">The LLVM Compiler Infrastructure</a><br>
|
|
Last modified: $Date$
|
|
</address>
|
|
</body>
|
|
</html>
|