clang/www/index.html - rust-lang/llvm-project - Git at Google

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   <title>Clang C Language Family Frontend for LLVM</title>
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   <!--*********************************************************************-->
   <h1>Clang: a C language family frontend for LLVM</h1>
   <!--*********************************************************************-->

   <p>The Clang project provides a language front-end and tooling infrastructure
   for languages in the C language family (C, C++, Objective C/C++, OpenCL,
   CUDA, and RenderScript) for the <a href="https://www.llvm.org/">LLVM</a>
   project. Both a GCC-compatible compiler driver (<tt>clang</tt>) and an
   MSVC-compatible compiler driver (<tt>clang-cl.exe</tt>) are provided. You
   can <a href="get_started.html">get and build</a> the source today.</p>

   <!--=====================================================================-->
   <h2 id="goals">Features and Goals</h2>
   <!--=====================================================================-->

   <p>Some of the goals for the project include the following:</p>

   <p><b><a href="features.html#enduser">End-User Features</a></b>:</p>

   <ul>
   <li>Fast compiles and low memory use</li>
   <li>Expressive diagnostics (<a href="diagnostics.html">examples</a>)</li>
   <li>GCC & MSVC compatibility</li>
   </ul>

   <p><b><a href="features.html#applications">Utility and
      Applications</a></b>:</p>

   <ul>
   <li>Modular library based architecture</li>
   <li>Support diverse clients (refactoring, static analysis, code generation,
    etc.)</li>
   <li>Allow tight integration with IDEs</li>
   <li>Use the LLVM 'Apache 2'
     <a href="https://github.com/llvm/llvm-project/blob/main/LICENSE.TXT">License</a>
   </li>
   </ul>

   <p><b><a href="features.html#design">Internal Design and
      Implementation</a></b>:</p>

   <ul>
   <li>A real-world, production quality compiler</li>
   <li>A simple and hackable code base</li>
   <li>A single unified parser for C, Objective C, C++, and Objective C++</li>
   <li>Conformance with C/C++/ObjC and their variants</li>
   </ul>

   <p>Of course this is only a rough outline of the goals and features of
      Clang.  To get a true sense of what it is all about, see the <a
      href="features.html">Features</a> section, which breaks
      each of these down and explains them in more detail.</p>


   <!--=====================================================================-->
   <h2>Why?</h2>
   <!--=====================================================================-->

   <p>Development of the new front-end was started out of a need
      for a compiler that allows better diagnostics, better integration with
      IDEs, a license that is compatible with commercial products, and a
      nimble compiler that is easy to develop and maintain.  All of these were
      motivations for starting work on a new front-end that could
      meet these needs.</p>

   <!--=====================================================================-->
   <h2>Current Status</h2>
   <!--=====================================================================-->

   <p>Clang is considered to
    be a production quality C, Objective-C, C++ and Objective-C++ compiler when
    targeting any target supported by LLVM. As example, Clang is used in
    production to build performance-critical software like Chrome or Firefox.
    <br />  If you are looking for source analysis or source-to-source
    transformation tools, Clang is probably a great solution for you. Please see
    the <a href="cxx_status.html">C++ status</a> page or the
    <a href="c_status.html">C status</a> page for more information about what
    standard modes and features are supported.</p>

   <!--=====================================================================-->
   <h2>Get it and get involved!</h2>
   <!--=====================================================================-->

   <p>Start by <a href="get_started.html">getting the code, building it, and
      playing with it</a>.  This will show you the sorts of things we can do
      today and will let you have the "Clang experience" first hand: hopefully
      it will "resonate" with you. :)</p>

   <p>Once you've done that, please consider <a href="get_involved.html">getting
      involved in the Clang community</a>.  The Clang developers include numerous
      volunteer contributors with a variety of backgrounds.  If you're
      interested in
      following the development of Clang, signing up for a mailing list is a good
      way to learn about how the project works.</p>
 </div>
 </body>
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	<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
	"http://www.w3.org/TR/html4/strict.dtd">
	<!-- Material used from: HTML 4.01 specs: http://www.w3.org/TR/html401/ -->
	<html>
	<head>
	<META http-equiv="Content-Type" content="text/html; charset=utf-8">
	<title>Clang C Language Family Frontend for LLVM</title>
	<link type="text/css" rel="stylesheet" href="menu.css">
	<link type="text/css" rel="stylesheet" href="content.css">
	</head>
	<body>
	<!--#include virtual="menu.html.incl"-->
	<div id="content">
	<!--*********************************************************************-->
	<h1>Clang: a C language family frontend for LLVM</h1>
	<!--*********************************************************************-->

	<p>The Clang project provides a language front-end and tooling infrastructure
	for languages in the C language family (C, C++, Objective C/C++, OpenCL,
	CUDA, and RenderScript) for the <a href="https://www.llvm.org/">LLVM</a>
	project. Both a GCC-compatible compiler driver (<tt>clang</tt>) and an
	MSVC-compatible compiler driver (<tt>clang-cl.exe</tt>) are provided. You
	can <a href="get_started.html">get and build</a> the source today.</p>

	<!--=====================================================================-->
	<h2 id="goals">Features and Goals</h2>
	<!--=====================================================================-->

	<p>Some of the goals for the project include the following:</p>

	<p><b><a href="features.html#enduser">End-User Features</a></b>:</p>

	<ul>
	<li>Fast compiles and low memory use</li>
	<li>Expressive diagnostics (<a href="diagnostics.html">examples</a>)</li>
	<li>GCC & MSVC compatibility</li>
	</ul>

	<p><b><a href="features.html#applications">Utility and
	Applications</a></b>:</p>

	<ul>
	<li>Modular library based architecture</li>
	<li>Support diverse clients (refactoring, static analysis, code generation,
	etc.)</li>
	<li>Allow tight integration with IDEs</li>
	<li>Use the LLVM 'Apache 2'
	<a href="https://github.com/llvm/llvm-project/blob/main/LICENSE.TXT">License</a>
	</li>
	</ul>

	<p><b><a href="features.html#design">Internal Design and
	Implementation</a></b>:</p>

	<ul>
	<li>A real-world, production quality compiler</li>
	<li>A simple and hackable code base</li>
	<li>A single unified parser for C, Objective C, C++, and Objective C++</li>
	<li>Conformance with C/C++/ObjC and their variants</li>
	</ul>

	<p>Of course this is only a rough outline of the goals and features of
	Clang. To get a true sense of what it is all about, see the <a
	href="features.html">Features</a> section, which breaks
	each of these down and explains them in more detail.</p>


	<!--=====================================================================-->
	<h2>Why?</h2>
	<!--=====================================================================-->

	<p>Development of the new front-end was started out of a need
	for a compiler that allows better diagnostics, better integration with
	IDEs, a license that is compatible with commercial products, and a
	nimble compiler that is easy to develop and maintain. All of these were
	motivations for starting work on a new front-end that could
	meet these needs.</p>

	<!--=====================================================================-->
	<h2>Current Status</h2>
	<!--=====================================================================-->

	<p>Clang is considered to
	be a production quality C, Objective-C, C++ and Objective-C++ compiler when
	targeting any target supported by LLVM. As example, Clang is used in
	production to build performance-critical software like Chrome or Firefox.
	<br /> If you are looking for source analysis or source-to-source
	transformation tools, Clang is probably a great solution for you. Please see
	the <a href="cxx_status.html">C++ status</a> page or the
	<a href="c_status.html">C status</a> page for more information about what
	standard modes and features are supported.</p>

	<!--=====================================================================-->
	<h2>Get it and get involved!</h2>
	<!--=====================================================================-->

	<p>Start by <a href="get_started.html">getting the code, building it, and
	playing with it</a>. This will show you the sorts of things we can do
	today and will let you have the "Clang experience" first hand: hopefully
	it will "resonate" with you. :)</p>

	<p>Once you've done that, please consider <a href="get_involved.html">getting
	involved in the Clang community</a>. The Clang developers include numerous
	volunteer contributors with a variety of backgrounds. If you're
	interested in
	following the development of Clang, signing up for a mailing list is a good
	way to learn about how the project works.</p>
	</div>
	</body>
	</html>