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POCode coverage not showing results using Xcode + gcov
 

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  1. POCode coverage not showing results using Xcode + gcov
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    <p>I have been trying to get the Code coverage working for iPhone simulator and always get a 0% coverage. Below are the configuration details and the steps that I have tried.</p> <p><strong>Configuration</strong></p> <p>Xcode 3.2.5/iOS 4.1 and iOS 4.2/Mac 10.6/GCC 4.2 Application UICatalog </p> <p><strong>References</strong></p> <p><a href="http://www.cubiclemuses.com/cm/articles/2009/05/14/coverstory-on-the-iphone/" rel="noreferrer">http://www.cubiclemuses.com/cm/articles/2009/05/14/coverstory-on-the-iphone/</a></p> <p><a href="http://developer.apple.com/library/mac/#qa/qa2007/qa1514.html" rel="noreferrer">http://developer.apple.com/library/mac/#qa/qa2007/qa1514.html</a> </p> <p><strong>Steps</strong></p> <ul> <li>Enable “Generate Test Coverage Files”</li> <li>Enable “Instrument Program Flow”</li> <li>Add “<code>-lgcov</code>” to “Other Linker Flags”</li> <li><code>UIApplicationExitsOnSuspend</code> flag in Info.plist is set to true</li> </ul> <p><strong>Result</strong></p> <p>I have the .gcda files generated but the coverage always show 0%. </p> <p><strong>Settings tried</strong></p> <ol> <li><p>Changing GCC to 4.0 and 4.2. When I try to change the GCC to 4.0 I get 26 build errors.</p></li> <li><p>Set environment variables </p> <pre><code>(const char *prefix = "GCOV_PREFIX"; const char *prefixValue = [[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"] cStringUsingEncoding:NSASCIIStringEncoding]; // This gets the filepath to the app's Documents directory const char *prefixStrip = "GCOV_PREFIX_STRIP"; const char *prefixStripValue = "1"; setenv(prefix, prefixValue, 1); // This sets an environment variable which tells gcov where to put the .gcda files. setenv(prefixStrip, prefixStripValue, 1); // This tells gcov to strip the default prefix, and use the filepath that we just declared.) </code></pre></li> <li><p>GCC Optimization set to None (-O0) and unchecked the precompiled prefix header file flag.</p></li> </ol>
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