Preprocessor
The Preprocessor options allow you to define symbols and include paths for use by the assembler.

Ignore standard include directories
Normally, the compiler and assembler automatically look for include files in the standard include directories. Use this option to turn off this behavior.
Additional include directories
Specify the full paths of directories to search for include files, one per line. Any directories specified here are searched before the standard include directories, in the order specified.
Use the browse button to display the Edit Include Directories dialog box, where you can specify directories using a file browser. For more information, see Edit Include Directories dialog box.
To avoid being dependent on absolute paths, and to make the project more easily portable between different machines and file system locations, you can use argument variables like $TOOLKIT_DIR$ and $PROJ_DIR$, see Argument variables.