title: Project reference conditional include with multiple conditions
body: <p>Here's a snippet from my csproj file:</p>
  
  <pre><code>&lt;ProjectReference Include="..\program_data\program_data.csproj" Condition="'$(Configuration)'=='Debug'"&gt;
        &lt;Project&gt;{4F9034E0-B8E3-448E-8794-CF9B9A5E7D46}&lt;/Project&gt;
        &lt;Name&gt;program_data&lt;/Name&gt;
  &lt;/ProjectReference&gt;
  </code></pre>
  
  <p>What I'd like to do is include <code>program_data.dll</code> for <strong>multiple</strong> build configurations, for example, both Release and Debug.</p>
  
  <p>I tried doing the following</p>
  
  <pre><code>Condition="'$(Configuration)'=='Debug' || '$(Configuration)'=='Release'"
  </code></pre>
  
  <p>but Visual Studio chokes on this. </p>
  
  <p>Is there a way I can do this, or must I have a separate <code>&lt;ProjectReference&gt;</code> for each build config?</p>