<p></p>
<p>Hi Subbu, thank you again! After installing <code>libgl1-mesa-dev</code>, the build process ran successfully, however it was still missing that clang flag.</p>
<p>My questions are resolved so far, but I believe that further people could benefit from the exact documentation of the necessary dependencies:</p>
<blockquote>
<blockquote>
<p>first, the build failed because it was missing <code>clang</code>. Do I assume correctly that the following dependency should be mentioned anywhere in the repository?</p>
<pre><code>sudo apt-get -y install clang
</code></pre>
</blockquote>
<p>I haven't used clang. I use the gcc toolchain. Sorry</p>
</blockquote>
<p>Which exact packages do I have to install? The <code>platforms/unix/config/configure</code> script requires <code>clang</code> to be installed as noted above. At the moment I have installed <code>gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0</code> and <code>clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final)</code>, but that clang version does not understand the <code>no-unused-but-set-variable</code> flag. Could you maybe refer to a specific package? :-)</p>
<p>I just read the <code>HowToBuild</code> file in the <code>build.linux*</code> directory. I installed the package string listed for Ubuntu, but the clang flag is still not recognized ...</p>

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