How do I instantiate a VHDL entity in an AHDL design?

Description

To instantiate a VHDL entity in an AHDL design, perform the following steps:

1. Open the VHDL file in the Quartus® II Text Editor.
2. From the File menu, point to Create/Update and select Create AHDL Include Files for Current File. This action creates a Include file (.inc) with all the port declarations.
3. In the AHDL file, add the following statement to include the .inc:

   INCLUDE "<name>.inc";

The files are now ready to compile.