mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 12:12:47 +01:00
361 lines
12 KiB
HTML
361 lines
12 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>
|
|
|
|
<div class="doc_title">
|
|
Getting Started with the LLVM System using Microsoft Visual Studio
|
|
</div>
|
|
|
|
<ul>
|
|
<li><a href="#overview">Overview</a>
|
|
<li><a href="#quickstart">Getting Started Quickly (A Summary)</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="#starting">Getting Started with LLVM</a>
|
|
<ol>
|
|
<li><a href="#terminology">Terminology and Notation</a>
|
|
<li><a href="#objfiles">The Location of LLVM Object Files</a>
|
|
</ol></li>
|
|
|
|
<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="mailto:jeffc@jolt-lang.org">Jeff Cohen</a>
|
|
</p>
|
|
</div>
|
|
|
|
|
|
<!-- *********************************************************************** -->
|
|
<div class="doc_section">
|
|
<a name="overview"><b>Overview</b></a>
|
|
</div>
|
|
<!-- *********************************************************************** -->
|
|
|
|
<div class="doc_text">
|
|
|
|
<p>The Visual Studio port at this time is experimental. It is suitable for
|
|
use only if you are writing your own compiler front end or otherwise have a
|
|
need to dynamically generate machine code. The JIT and interpreter are
|
|
functional, but it is currently not possible to generate assembly code which
|
|
is then assembled into an executable. You can indirectly create executables
|
|
by using the C back end.</p>
|
|
|
|
<p>To emphasize, there is no C/C++ front end currently available.
|
|
<tt>llvm-gcc</tt> is based on GCC, which cannot be bootstrapped using VC++.
|
|
Eventually there should be a <tt>llvm-gcc</tt> based on Cygwin or MinGW that
|
|
is usable. There is also the option of generating bytecode files on Unix and
|
|
copying them over to Windows. But be aware the odds of linking C++ code
|
|
compiled with <tt>llvm-gcc</tt> with code compiled with VC++ is essentially
|
|
zero.</p>
|
|
|
|
<p>The LLVM test suite cannot be run on the Visual Studio port at this
|
|
time.</p>
|
|
|
|
<p>Most of the tools build and work. <tt>llvm-db</tt> does not build at this
|
|
time. <tt>bugpoint</tt> does build, but does not work.
|
|
|
|
<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>
|
|
|
|
<!-- *********************************************************************** -->
|
|
<div class="doc_section">
|
|
<a name="quickstart"><b>Getting Started Quickly (A Summary)</b></a>
|
|
</div>
|
|
<!-- *********************************************************************** -->
|
|
|
|
<div class="doc_text">
|
|
|
|
<p>Here's the short story for getting up and running quickly with LLVM:</p>
|
|
|
|
<ol>
|
|
<li>Read the documentation.</li>
|
|
<li>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 CVS access (or use a <a href="#mirror">mirror</a>):
|
|
<ol>
|
|
<li><tt>cd <i>where-you-want-llvm-to-live</i></tt></li>
|
|
<li><tt>cvs -d
|
|
:pserver:anon@llvm-cvs.cs.uiuc.edu:/var/cvs/llvm login</tt></li>
|
|
<li>Hit the return key when prompted for the password.
|
|
<li><tt>cvs -z3 -d :pserver:anon@llvm-cvs.cs.uiuc.edu:/var/cvs/llvm
|
|
co llvm</tt></li>
|
|
<li><tt>cd llvm</tt></li>
|
|
<li><tt>cvs up -P -d</tt></li>
|
|
</ol></li>
|
|
</ul></li>
|
|
|
|
<li>Start Visual Studio
|
|
<ol>
|
|
<li>Simply double click on the solution file <tt>llvm/win32/llvm.sln</tt>.
|
|
</li>
|
|
</ol></li>
|
|
|
|
<li>Build the LLVM Suite:
|
|
<ol>
|
|
<li>Simply build the solution.</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. The program will print the corresponding fibonacci value.</li>
|
|
</ol></li>
|
|
|
|
</ol>
|
|
|
|
<p>It is strongly encouraged that you get the latest version from CVS. Much
|
|
progress has been made since the 1.4 release.</p>
|
|
|
|
</div>
|
|
|
|
<!-- *********************************************************************** -->
|
|
<div class="doc_section">
|
|
<a name="requirements"><b>Requirements</b></a>
|
|
</div>
|
|
<!-- *********************************************************************** -->
|
|
|
|
<div class="doc_text">
|
|
|
|
<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>
|
|
|
|
</div>
|
|
|
|
<!-- ======================================================================= -->
|
|
<div class="doc_subsection">
|
|
<a name="hardware"><b>Hardware</b></a>
|
|
</div>
|
|
|
|
<div class="doc_text">
|
|
|
|
<p>Any system that can adequately run Visual Studio .NET 2003 is fine. The
|
|
LLVM source tree and object files, libraries and executables will consume
|
|
approximately 3GB.</p>
|
|
|
|
</div>
|
|
|
|
<!-- ======================================================================= -->
|
|
<div class="doc_subsection"><a name="software"><b>Software</b></a></div>
|
|
<div class="doc_text">
|
|
|
|
<p>You will need Visual Studio .NET 2003. Earlier versions cannot open the
|
|
solution/project files. The VS 2005 beta can, but will migrate these files
|
|
to its own format in the process. While it should work with the VS 2005
|
|
beta, there are no guarantees and there is no support for it at this time.
|
|
It has been reported that VC++ Express also works.</p>
|
|
|
|
<p>You will also need several open source packages: bison, flex, and sed.
|
|
These must be installed in <tt>llvm/win32/tools</tt>. These can be found at
|
|
<a href="http://gnuwin32.sourceforge.net">http://gnuwin32.sourceforge.net</a>
|
|
or
|
|
<a href="http://unxutils.sourceforge.net">http://unxutils.sourceforge.net</a>.
|
|
Bison prefers that m4 be in the path. You must add it to the Visual Studio
|
|
configuration under the menu Options -> Projects -> VC++ Directories.
|
|
Alternatively, you can set the environment variable <tt>M4</tt> to point to
|
|
<tt>m4</tt> executable.</p>
|
|
|
|
</div>
|
|
|
|
<!-- *********************************************************************** -->
|
|
<div class="doc_section">
|
|
<a name="starting"><b>Getting Started with LLVM</b></a>
|
|
</div>
|
|
<!-- *********************************************************************** -->
|
|
|
|
<div class="doc_text">
|
|
|
|
<p>The remainder of this guide is meant to get you up and running with
|
|
LLVM using Visual Studio and to give you some basic information about the LLVM
|
|
environment.</p>
|
|
|
|
</div>
|
|
|
|
<!-- ======================================================================= -->
|
|
<div class="doc_subsection">
|
|
<a name="terminology">Terminology and Notation</a>
|
|
</div>
|
|
|
|
<div class="doc_text">
|
|
|
|
<p>Throughout this manual, the following names are used to denote paths
|
|
specific to the local system and working environment. <i>These are not
|
|
environment variables you need to set but just strings used in the rest
|
|
of this document below</i>. In any of the examples below, simply replace
|
|
each of these names with the appropriate pathname on your local system.
|
|
All these paths are absolute:</p>
|
|
|
|
<dl>
|
|
<dt>SRC_ROOT
|
|
<dd>
|
|
This is the top level directory of the LLVM source tree.
|
|
<p>
|
|
|
|
<dt>OBJ_ROOT
|
|
<dd>
|
|
This is the top level directory of the LLVM object tree (i.e. the
|
|
tree where object files and compiled programs will be placed. It
|
|
is fixed at SRC_ROOT/win32).
|
|
<p>
|
|
</dl>
|
|
|
|
</div>
|
|
|
|
<!-- ======================================================================= -->
|
|
<div class="doc_subsection">
|
|
<a name="objfiles">The Location of LLVM Object Files</a>
|
|
</div>
|
|
|
|
<div class="doc_text">
|
|
|
|
<p>The object files are placed under <tt>OBJ_ROOT/Debug</tt> for debug builds
|
|
and <tt>OBJ_ROOT/Release</tt> for release (optimized) builds. These include
|
|
both executables and libararies that your application can link against.
|
|
|
|
<p>The files that <tt>configure</tt> would create when building on Unix are
|
|
created by the <tt>Configure</tt> project and placed in
|
|
<tt>OBJ_ROOT/llvm</tt>. You application must have OBJ_ROOT in its include
|
|
search path just before <tt>SRC_ROOT/include</tt>.
|
|
|
|
</div>
|
|
|
|
<!-- *********************************************************************** -->
|
|
<div class="doc_section">
|
|
<a name="tutorial">An Example Using the LLVM Tool Chain</a>
|
|
</div>
|
|
<!-- *********************************************************************** -->
|
|
|
|
<div class="doc_text">
|
|
|
|
<ol>
|
|
<li>First, create a simple C file, name it 'hello.c':
|
|
<pre>
|
|
#include <stdio.h>
|
|
int main() {
|
|
printf("hello world\n");
|
|
return 0;
|
|
}
|
|
</pre></li>
|
|
|
|
<li><p>Next, compile the C file into a LLVM bytecode file:</p>
|
|
<p><tt>% llvm-gcc hello.c -o hello</tt></p>
|
|
|
|
<p>Note that you should have already built the tools and they have to be
|
|
in your path, at least <tt>gccas</tt> and <tt>gccld</tt>.</p>
|
|
|
|
<p>This will create two result files: <tt>hello</tt> and
|
|
<tt>hello.bc</tt>. The <tt>hello.bc</tt> is the LLVM bytecode that
|
|
corresponds the the compiled program and the library facilities that it
|
|
required. <tt>hello</tt> is a simple shell script that runs the bytecode
|
|
file with <tt>lli</tt>, making the result directly executable. Note that
|
|
all LLVM optimizations are enabled by default, so there is no need for a
|
|
"-O3" switch.</p>
|
|
|
|
<p><b>Note: while you cannot do this step on Windows, you can do it on a
|
|
Unix system and transfer <tt>hello.bc</tt> to Windows.</b></p></li>
|
|
|
|
<li><p>Run the program. To make sure the program ran, execute the
|
|
following command:</p>
|
|
|
|
<p><tt>% lli hello.bc</tt></p></li>
|
|
|
|
<li><p>Use the <tt>llvm-dis</tt> utility to take a look at the LLVM assembly
|
|
code:</p>
|
|
|
|
<p><tt>% llvm-dis < hello.bc | less</tt><p></li>
|
|
|
|
<li><p>Compile the program to native assembly using the LLC code
|
|
generator:</p>
|
|
|
|
<p><tt>% llc hello.bc -o hello.s</tt></p>
|
|
|
|
<li><p>Assemble the native assembly language file into a program:</p>
|
|
|
|
<p><b>Not currently possible, but eventually will use <tt>NASMW</tt>.</b></p>
|
|
|
|
<li><p>Execute the native code program:</p>
|
|
|
|
<p><tt>% ./hello.native</tt></p></li>
|
|
|
|
</ol>
|
|
|
|
</div>
|
|
|
|
<!-- *********************************************************************** -->
|
|
<div class="doc_section">
|
|
<a name="problems">Common Problems</a>
|
|
</div>
|
|
<!-- *********************************************************************** -->
|
|
|
|
<div class="doc_text">
|
|
|
|
<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>
|
|
|
|
<!-- *********************************************************************** -->
|
|
<div class="doc_section">
|
|
<a name="links">Links</a>
|
|
</div>
|
|
<!-- *********************************************************************** -->
|
|
|
|
<div class="doc_text">
|
|
|
|
<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.cs.uiuc.edu/">LLVM homepage</a></li>
|
|
<li><a href="http://llvm.cs.uiuc.edu/doxygen/">LLVM doxygen tree</a></li>
|
|
<li><a href="http://llvm.cs.uiuc.edu/docs/Projects.html">Starting a Project
|
|
that Uses LLVM</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" 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="mailto:jeffc@jolt-lang.org">Jeff Cohen</a><br>
|
|
<a href="http://llvm.cs.uiuc.edu">The LLVM Compiler Infrastructure</a><br>
|
|
Last modified: $Date$
|
|
</address>
|
|
</body>
|
|
</html>
|