Paths and Symbols page, C/C++ Preferences window

You can define include paths and preprocessor symbols on the Paths and Symbols page of the C/C++ Preferences window.

Make Paths and Symbols Preferences Dialog Box

Automate scanner configuration discovery: Select this checkbox to configure the scanner discovery to run automatically.
Options: Click this button to open the Scanner Configuration Discovery options.
Manage: Click these buttons to open the Manage include paths or Manage defined symbols windows.