Updating an Application

AutoLISP Developer's Guide > Using the Visual LISP Environment > Building Applications > Making Application Modules >

If you change just a small piece of your application's AutoLISP source code, you can have VLISP rebuild your application VLX while compiling only those files you've updated. To make this type of update, choose File Make Application Make Application from the VLISP menu, and select your application's Make file. VLISP rebuilds the application based on the information contained in the Make file, and automatically compiles any application source files for which either of the following is true:

There is no compiled (.fas) version of the file.
There is a compiled version of the file, but the source file has been modified since that compile (that is, the date of the source file is more current than the date of the .fas file).

Note that if you change application options (for example, from Standard compile mode to Optimize and Link), you must use the Rebuild Application menu option to create a new VLX with the changes you specified. The Make Application command only checks for changes to AutoLISP source code files, not to application options.