title: macOS Big Sur 11.1 can't find stdlib.h w
body: <p>I am in my build folder of my cpp project and want to compile
  <code>make</code>
  and as a response i get</p>
  <pre><code>/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/stdlib.h:97:15: fatal error: 'stdlib.h' file not
        found
  #include_next &lt;stdlib.h&gt;
  </code></pre>
  <p>also I can't compile in Clion either.</p>
  <p>I tried to set differnt paths with <code>xcode-select -p </code> and the sdk packages isn't avaible anymore.</p>