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PCL/Standalone applications (the adventure continues...)
- To: firstname.lastname@example.org
- Subject: PCL/Standalone applications (the adventure continues...)
- From: email@example.com (George Williams)
- Date: Mon, 16 Apr 90 13:53:16 cdt
More follow-up on PCL compilation and standalone applications:
Sean Doyle ("XRAY::RSTARSEAN" <firstname.lastname@example.org>)
> > From: email@example.com (Andrew L. M. Shalit)
> > My guess is that PCL calls the compiler at run-time to compile
> > effective methods which haven't already been compiled and cached. The
> > compiler isn't available in stand-alone applications.
> Yep. That's what's happening.
> There appear to be two solutions. Andrew pointed out the first:
> > I'm not too familiar with PCL, but you might be able to run
> > the application for a while (before calling SAVE-APPLICATION).
> > This would get all the effective methods computed and cached.
> > Then call SAVE-APPLICATION. Of course, if you miss just one
> > effective method, you'll lose at run time.
I posted a message to the PCL mail-list asking if there was something
already in PCL to help out with this, and here's the response I got:
> From: firstname.lastname@example.org (George Williams)
> I've been told that the "Rainy Day (beta 3)" version of PCL doesn't
> actually compile the methods until they are used. In some
> implementations, such as Mac Allegro CL, when we're trying to build
> stand alone applications, the compiler is not present in the
> generated application.
> Yes, PCL doesn't compile the effective (often called combined) methods
> until they are used.
> Is there a mechanism to compile all of the methods that have been
> defined, but not referenced, so that when the (stand-alone)
> application is generated all of the methods will be present?
> PCL has a feeble mechanism called (precompile-random-code-segments). In
> order for it to work you must have, at some point, run your application
> through enough of its paces that all the combined methods will be used.
> It is pretty easy to do something better, which just generates and
> compiles the methods. This is one of the many things I plan to leave to
> the vendors to do. I believe that at this point, at least one of them
> has done it. Perhaps someone can send out some portable code that does
How about some help from somebody who has been mucking around in the
internals of PCL? Any volunteers?
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