title: How to add library paths in Delphi 10
body: <p>I am trying to install GLscene but getting problems with the source file locations.</p>
  
  <p>It says in the install instructions to add the GLscene source directories into the global library path in tool/options/Delphi options/Library, which I have done but it has no effect.</p>
  
  <p>I can add the source directories into each package project directory and it then compiles, but I would rather have it accessible globally.</p>
  
  <p>The GLscene library items I have entered are,</p>
  
  <p>C:\Users\Andy\Documents\Embarcadero\Studio\Projects\GLScene_VCL\Source</p>
  
  <p>C:\Users\Andy\Documents\Embarcadero\Studio\Projects\GLScene_VCL\Source\Shaders</p>
  
  <p>C:\Users\Andy\Documents\Embarcadero\Studio\Projects\GLScene_VCL\Source\DesignTime</p>
  
  <p>Which are all correct,</p>
  
  <p>anybody know any reason why the compiler can't find the files in these directories?</p>