title: Xcode does not find C++ static library
body: <p>So I had some issues with this before but I deleted my old question and updated it to this one. Here it goes:</p>
  
  <p>I want to use a C++ Library in my iOS Swift project. With the help of this community I compiled my library as a static library (.a file). Now I created a new project to test this and I did only the following steps :</p>
  
  <p><strong><em>1.</em></strong> Create <strong>new Swift Project</strong></p>
  
  <p><strong><em>2.</em></strong> Under <strong>Build Phases -> Link Binary with Libraries</strong> add my library (<a href="https://i.stack.imgur.com/nEOFd.png" rel="nofollow noreferrer">like so</a>)</p>
  
  <p><strong><em>3.</em></strong> Add a <strong>new C++ File</strong> without a header file and <strong>add a bridging header</strong> with following contents :</p>
  
  <p><strong><em>//Wrapper.cpp</em></strong></p>
  
  <pre><code>extern "C" void test()
  {
      //Just to test the swift - c++ connection later this file 
      //shall import the main header of the library.
  }
  </code></pre>
  
  <p><strong><em>//CAS Test-Bridging-Header.h</em></strong></p>
  
  <pre><code>void test();
  </code></pre>
  
  <p>But now, when I compile I get <a href="https://i.stack.imgur.com/3Do3a.png" rel="nofollow noreferrer">this error</a> (you can also see my project hierarchy on the left).</p>
  
  <p>Thanks for all your help in advance ! </p>