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    <p>At my company, we used both approaches at the same time:</p> <ul> <li>We do two checkouts: one for the project, the other for the library.</li> <li>When the project needs to be compiled (via <code>Makefile</code>), we compile the library first.</li> <li>The library is then linked as if it was a binary-only library.</li> <li>When we release a project, we check whether the other projects still compile against the new library.</li> <li>When we release a project, we tag the library along with the project.</li> </ul> <p>This way you get the best of both worlds:</p> <ul> <li>common code is shared: all projects benefit from bug fixes and improvements</li> <li>source code is always fully available for understanding and debugging</li> <li>source code availability encourages library maintenance (fixings, improvements, and experiments)</li> <li>the library boundaries impose a more API-like approach: clearer interface and project embedding</li> <li>you can pass compile-time flags to the library to build a different flavors</li> <li>you can always go back in time if needed without library-vs-project mismatching hassles</li> <li>if you are in a hurry, you can put off the library check.</li> </ul> <p>The only drawback to this approach is that developers have not know what they are doing. If they modify the library, they should know that the change will impact on all projects. But you are already using a version control system and, if you use branches and the communication within your team is good, there should be no problem at all.</p>
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    1. POWhat is the common code reuse strategy in C
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    1. COThanks, it helps me a lot. I just would like to know how do you manage the releases of the libraries? at the moment of the release you tag it? or you generate a binary that is stored somewhere?
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      1. USOscar Castiblanco
    2. COThere is something else I miss in your aproach. Devolus mention something very important in point 1 and point 2. How did you solve those problems?
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      1. USOscar Castiblanco
    3. COI found an interesting thesis where they describe the aproaches used for separation of concerns with the preprocessor http://wwwiti.cs.uni-magdeburg.de/iti_db/publikationen/ps/10/diss_kaestner.pdf. They mention some interesting tools like http://wwwiti.cs.uni-magdeburg.de/iti_db/research/cide/
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