title: Include a qmake project in another qmake project
body: <p>I have created an application in qt/c++</p>
  
  <p>Browser/Browser.pro</p>
  
  <p>To start the browser, I need an agent. I have created an agent and store it in the Browser folder</p>
  
  <pre><code>Browser/Browser.pro
          Browser.cpp
          main.cpp
          Agent/Agent.pro
          Agent/agent.cpp
  </code></pre>
  
  <p>When building the Browser, I'm generating an app but it's only build the browser.</p>
  
  <p>I have added in Browser.pro the line below:</p>
  
  <pre><code>SUBDIRS += \
    Agent/Agent.pro
  
  browser.depend = Agent/Agent.pro
  </code></pre>
  
  <p>My concerns is that I'm trying to build browser.app and automatically agent.app .
  The goal after is to integrate the the agent.app generated in the resource of the browser.app</p>
  
  <p>Any idea</p>