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POWhat's the correct way to configure XCode 4 workspaces to build dependencies when needed?
 

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  1. POWhat's the correct way to configure XCode 4 workspaces to build dependencies when needed?
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    <p>My case is simple, a workspace with two sibling projects: one main (iOS) app and a project that builds several static library targets used by the app.</p> <p>Here's how I have configured the build:</p> <ul> <li>pointed a 'user header search path' in the main app's build settings to the library project location (via a source tree)</li> <li>in my app's main target's editor -> build phases -> "Link Binary With Libraries" section, added the library products I want to use.</li> <li>in the scheme, ticked 'Find Implicit Dependencies'</li> </ul> <p>After a clean (and deletion of the derived data), a build nets me this error during the build of the main project:</p> <pre><code>ld: library not found for -lChipmunk clang: error: linker command failed with exit code 1 (use -v to see invocation) Command /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/clang failed with exit code 1 </code></pre> <p>Sure enough, if I look in the newly-created derived data, the only object files to be found are for the main app, not the libraries. A widespread 'find' for *.o files doesn't reveal anything relevant, so the libraries aren't getting lost, they're definitely not being built.</p> <p>Some supplementary points: </p> <ul> <li>when I've asked about this on the Apple dev forums, it's been suggested that I should add explicit deps in the main target's Build Phases->Target Dependencies editor. But you can only add deps here to targets in the <em>same</em> project or subprojects; in my case I have the app and library projects as workplace siblings.</li> <li>if I build each library manually before the main build, all is fine.</li> </ul> <h3>Update:</h3> <p>I've just figured out a workaround, which is to add all the deps' targets into the 'build' part of the main app's scheme. I had tried this before without success, but hadn't realised that I could drag the targets around in the list to get the right build order. Builds now happen in the correct order, both after a clean, and after changes in either library or main app source.</p> <p>I'm leaving the question here, because manually sorting out a build order surely shouldn't be necessary. There has to be something wrong with how I have things set up.</p>
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    1. COAnother reason for leaving the question here is that even the above (imperfect) workaroun doesn't always work. It's fine on the first build, but often [fails to build](https://devforums.apple.com/message/399726#399726) after source changes in the static lib project.
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    2. COI never quite understood what's the deal with this whole Xcode 4 workspace thing. How exactly is it different from subproject? What's the benefit anyways for all these headaches?
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    3. COSo... I'm facing the same problem... it works if I clean and then build the project. But Xcode is not recompiling the lib project after changes in its source code. So, Im forced to clean/build the app project to force xcode to recompile and generate the updated version of my library. Any progress with it, @Cris?
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