Where to find these libraries?

Working with Oracle Forms Version : 6.0.8.28.0 and trying to compile a form we get several errors about libraries not found:

identifier 'APP_DEBUG.SETPOINT' must be declared

identifier 'APP_STANDARD.SYNCHRONIZE' must be declared

identifier 'APP_DEBUG.SETPOINT' must be declared

identifier 'APP_ITEM_PROPERTY.SET_PROPERTY' must be declared

I presumed we need to set FORMS_PATH to a path to find them, but I cannot find them on our server.

And yes, I know this is desupported a century ago, but helas - we have to deal with one remnant…