See Also

The Include Statement allows you to import text from an AHDL Include File (.inc) into the current file. The following example shows an Include Statement:

The Include Statement has the following characteristics:

• The Include Statement begins with the keyword INCLUDE, followed by the name of the file to be included, enclosed in double quotation marks (").

• If you do not specify a filename extension, the Compiler assumes the extension .inc.

• The statement ends with a semicolon (;).

• When the Compiler processes the project, the text from the AHDL Include File is substituted for the Include Statement. In the example shown above, the file const.inc is substituted for the text INCLUDE "const.inc";.

Go to Include Statement & AHDL Include File Rules for additional information on using AHDL Include Files and Include Statements.

Include Statements are often used to include Function Prototypes for a lower-level design file in a Text Design File (.tdf). You can then insert an instance of the logic function with an Instance Declaration or an in-line logic function reference.

When you compile a file, the Compiler searches for AHDL Include Files in the following order:

1. The project directory.

2. Any user libraries specified with the User Libraries page of the Settings dialog box (Assignments menu).

3. The \quartus\libraries\megafunctions and \quartus\libraries\others\maxplus2 directories created during installation.

If you change a TDF that includes an AHDL Include File, you can perform an elaboration or analysis on, or fully recompile, the design to update the view of the design hierarchy in the Hierarchies tab of the Project Navigator.

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