title: Get path of Qt 5 additional plugins
body: <p>In a Qt 4 project, I build a Windows installer using Inno Setup. The required libraries (qsqlite.dll, qjpeg4.dll, etc.) are included in the script with CMake variables such as <code>QT_QSQLITE_PLUGIN_RELEASE</code> or <code>QT_QJPEG_PLUGIN_RELEASE</code>.</p>
  
  <p>ex: setup.iss.in :</p>
  
  <pre><code>[Files]
  Source: "myapp.exe"; DestDir: {app}
  Source: "${QT_QSQLITE_PLUGIN_RELEASE}"; DestDir: {app}/sqldrivers
  Source: "${QT_QJPEG_PLUGIN_RELEASE}"; DestDir: {app}/imageformats
  </code></pre>
  
  <p>Now the project should migrate to Qt5. Everything works fine, but I can't find pre-defined variables to get Qt5 equivalent for these plugins paths. Of course, I could hardcode them, but I am looking for a way to define it in a clean and independent way.</p>