title: How Delphi "Tools - Options - Environment Options - Delphi Options - Library-Win32 - Libary path" (for dcu's) is named in Delphi 10.X (Sydney)?
body: <p>I am using &quot;Tools - Options - Environment Options - Delphi Options - Library-Win32 - Libary path&quot; variable to keep the semicolon-separated lists of paths for the directories in which I am keeping *.dcu files (Delphi compiled units) in the older Delphi versions, e.g. Delphi 2009.</p>
  <p>Now I have Delphi 10.4 Sydney and it does not have such option. Which Delphi 10.4 Sydney option replaced the older Library path?</p>
  <p>My guess is that Delphi 10.4 used 'Tools - Options - IDE - Environment Variables - System Variables - BDSBIN' or its 'User Sytem Overrides' as the Library Path. But I have confusion about this, becase my installation contains the value &quot;c:\program files (x86)\embarcadero\studio\21.0\bin&quot; currenty and I am afraid to put additional directories here. The name &quot;BDSBIN&quot; seems so venerable that it may be allowed to contain only one directory only? Or is it possible to add semicolon-separated directory list here as well?</p>
  <p>Context: I am trying to use <a href="https://github.com/theilgaz/FGX" rel="nofollow noreferrer">https://github.com/theilgaz/FGX</a> in my Delphi 10.4 Sydney and it puts all the dcu files beside the pas files. So - my intention was to copy dcu files in the separate library directory and add this directory to the Library Path and I am not sure wheter the BDSBIN is the library path for Delphi 10.4 Sydney or should I look in other Delphi 10.4 Sydney environment variable for the list of library paths?</p>