title: Linux header files in VS wihout project
body: <p>I am using VS2019 on Windows to edit c++ code files. The code is for Linux OS and depends on headers like #include &lt;sys/socket.h&gt; There is no project file for the visual studio so I can only open it as directory with files. It does know includes stdint.h and windows.h but not sys/socket.h.</p>
  <p>How set VS to know the standard Linux headers? And how to include and arbitrary files for the intellisense when there is no project file (I can not create one).</p>
  <p>I do not intent to build anything only to make intellisense and code completion possible.</p>