1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" 2 "http://www.w3.org/TR/html4/strict.dtd"> 3<html> 4<head> 5 <title>Running the analyzer within Xcode</title> 6 <link type="text/css" rel="stylesheet" href="content.css"> 7 <link type="text/css" rel="stylesheet" href="menu.css"> 8 <script type="text/javascript" src="scripts/menu.js"></script> 9</head> 10<body> 11 12<div id="page"> 13<!--#include virtual="menu.html.incl"--> 14<div id="content"> 15 16<h1>Running the analyzer within Xcode</h1> 17 18<table style="margin-top:0px" width="100%" border="0" cellpadding="0px" cellspacing="0"> 19<tr><td> 20 21<h3>What is it?</h3> 22 23<p>Since Xcode 3.2, users have been able to run the Clang Static Analyzer 24<a 25href="https://developer.apple.com/library/ios/recipes/xcode_help-source_editor/chapters/Analyze.html#//apple_ref/doc/uid/TP40009975-CH4-SW1">directly 26within Xcode</a>.</p> 27 28<p>It integrates directly with the Xcode build system and 29presents analysis results directly within Xcode's editor.</p> 30 31<h3>Can I use the open source analyzer builds with Xcode?</h3> 32 33<p><b>Yes</b>. Instructions are included below.</p> 34 35</td> 36<td style="padding-left:10px; text-align:center"> 37 <a href="images/analyzer_xcode.png"><img src="images/analyzer_xcode.png" width="620px" alt="analyzer in xcode"></a> 38<br><b>Viewing static analyzer results in Xcode</b> 39</td></tr></table> 40 41<h3>Key features:</h3> 42<ul> 43 <li><b>Integrated workflow:</b> Results are integrated within Xcode. There is 44 no experience of using a separate tool, and activating the analyzer requires a 45 single keystroke or mouse click.</li> 46 <li><b>Transparency:</b> Works effortlessly with Xcode projects (including iPhone projects). 47 <li><b>Cons:</b> Doesn't work well with non-Xcode projects. For those, 48 consider using <a href="scan-build.html"><b>scan-build</b></a>. 49</ul> 50 51 52<h2>Getting Started</h2> 53 54<p>Xcode is available as a free download from Apple on the <a 55href="https://itunes.apple.com/us/app/xcode/id497799835?mt=12">Mac 56App Store</a>, with <a 57href="https://developer.apple.com/library/ios/recipes/xcode_help-source_editor/chapters/Analyze.html#//apple_ref/doc/uid/TP40009975-CH4-SW1">instructions 58available</a> for using the analyzer.</p> 59 60<h2>Using open source analyzer builds with Xcode</h2> 61 62<p>By default, Xcode uses the version of <tt>clang</tt> that came bundled with 63it to analyze your code. It is possible to change Xcode's behavior to use an 64alternate version of <tt>clang</tt> for this purpose while continuing to use 65the <tt>clang</tt> that came with Xcode for compiling projects.</p> 66 67<h3>Why try open source builds?</h3> 68 69<p>The advantage of using open source analyzer builds (provided on this website) 70is that they are often newer than the analyzer provided with Xcode, and thus can 71contain bug fixes, new checks, or simply better analysis.</p> 72 73<p>On the other hand, new checks can be experimental, with results of variable 74quality. Users are encouraged to <a href="filing_bugs.html">file bug reports</a> 75(for any version of the analyzer) where they encounter false positives or other 76issues.</p> 77 78<h3>set-xcode-analyzer</h3> 79 80<p>Starting with analyzer build checker-234, analyzer builds contain a command 81line utility called <tt>set-xcode-analyzer</tt> that allows users to change what 82copy of <tt>clang</tt> that Xcode uses for analysis:</p> 83 84<pre class="code_example"> 85$ <b>set-xcode-analyzer -h</b> 86Usage: set-xcode-analyzer [options] 87 88Options: 89 -h, --help show this help message and exit 90 --use-checker-build=PATH 91 Use the Clang located at the provided absolute path, 92 e.g. /Users/foo/checker-1 93 --use-xcode-clang Use the Clang bundled with Xcode 94</pre> 95 96<p>Operationally, <b>set-xcode-analyzer</b> edits Xcode's configuration files 97to point it to use the version of <tt>clang</tt> you specify for static 98analysis. Within this model it provides you two basic modes:</p> 99 100<ul> 101 <li><b>--use-xcode-clang</b>: Switch Xcode (back) to using the <tt>clang</tt> that came bundled with it for static analysis.</li> 102 <li><b>--use-checker-build</b>: Switch Xcode to using the <tt>clang</tt> provided by the specified analyzer build.</li> 103</ul> 104 105<h4>Things to keep in mind</h4> 106 107<ul> 108 <li>You should quit Xcode prior to running <tt>set-xcode-analyzer</tt>.</li> <li>You will need to run <tt>set-xcode-analyzer</tt> under 109<b><tt>sudo</tt></b> in order to have write privileges to modify the Xcode 110configuration files.</li> 111</ul> 112 113<h4>Examples</h4> 114 115<p><b>Example 1</b>: Telling Xcode to use checker-235:</p> 116 117<pre class="code_example"> 118$ pwd 119/tmp 120$ tar xjf checker-235.tar.bz2 121$ sudo checker-235/set-xcode-analyzer --use-checker-build=/tmp/checker-235 122</pre> 123 124<p>Note that you typically won't install an analyzer build in <tt>/tmp</tt>, but 125the point of this example is that <tt>set-xcode-analyzer</tt> just wants a full 126path to an untarred analyzer build.</p> 127 128<p><b>Example 2</b>: Telling Xcode to use a very specific version of <tt>clang</tt>:</p> 129 130<pre class="code_example"> 131$ sudo set-xcode-analyzer --use-checker-build=~/mycrazyclangbuild/bin/clang 132</pre> 133 134<p><b>Example 3</b>: Resetting Xcode to its default behavior:</p> 135 136<pre class="code_example"> 137$ sudo set-xcode-analyzer --use-xcode-clang 138</pre> 139 140</div> 141</div> 142</body> 143</html> 144 145
